Some standard content:
Mechanical Industry Standard of the People's Republic of China
Centrifugal ventilators for mines
1 Subject content and scope of application
JB/T 4355-93
This standard specifies the technical requirements, test methods, inspection rules, warranty period, marking, packaging and transportation of centrifugal ventilators for mines (hereinafter referred to as "ventilators").
This standard applies to centrifugal ventilators for ventilation of main tunnels in mines with an ambient temperature of 50-50C. 2 Reference standards
GB 275
GB 1171
GB1236
Fitment of rolling bearings with shafts and housings
Triangular tape
Test method for aerodynamic performance of ventilators
GB/T13306Product label
GB/T 2888
GB 3181
GB3235
GB4323
GB 10178
Method for measuring noise of fans and Roots blowersPaint film color labeling sample
Basic types of ventilatorsDimensional parameters and performance curvesElastic sleeve pin coupling
Field test of ventilators
GB/T 13275
ZB J72 038
ZB J72 039
ZB J72 042
JB/T 2977
JB/T6444
JB/T6445
JB/T 6886
JB/T 6887
JB/T 6888
JB/T 6885
JB/TQ334
JB/TQ 339
3 Technical requirements
Technical conditions for centrifugal fans for general purpose
Quality inspection of welding for fans
Technical requirements for riveted and welded parts for fans
Balancing rotors for fans
Terminology for fans and Roots blowers
General technical conditions for fan packaging
Overspeed test for impellers of fans
Technical conditions for painting for fans
Technical conditions for cast iron parts for fans
Technical conditions for cast steel parts for fans
Dimensions of circular flanges for fans
Vibration accuracy of fans
Appearance quality and cleanliness of fan products
Fans shall comply with the provisions of this standard and be manufactured according to the drawings and technical documents approved through the prescribed procedures or according to the requirements of the agreement (contract) between the supply and demand parties.
3.1 Product performance
3.1.1 Each series of fans should be tested for aerodynamic performance and a typical aerodynamic performance curve should be drawn. Approved by the Ministry of Machinery Industry of the People's Republic of China on July 13, 1993 304
Implementation on July 1, 1994
JB/T4355-93
3.1.2 At rated speed, within the working area, the deviation between the measured aerodynamic performance curve of the fan and the typical performance curve should meet the following requirements:
a. At the specified fan full pressure or static pressure, the corresponding flow deviation is ±5%, or at the specified flow, the corresponding fan full pressure or static pressure deviation is ±5%:
b. The fan full pressure efficiency shall not be less than 5% of its corresponding point efficiency. Note: (i) The typical performance curve refers to the performance curve confirmed during the identification of new products. ② Deviation - measured set standard value × 100%. Standard value
3 Noise measurement should be carried out on all series of fans, and the noise characteristic curve of the specific A sound level should be drawn. The specific A sound level should comply with the provisions of "3.1. 3
fan noise limit value" or the joint provisions. 3.1.4 The fan should be subjected to mechanical operation test, and the measurement of bearing temperature rise and vibration should comply with the following provisions: The bearing temperature measured on the bearing surface of the rolling bearing shall not be higher than the ambient temperature of 40C; a.
b, when the maximum inlet oil temperature of the sliding bearing is 43C, the oil temperature rise after passing through the bearing and the bearing box shall not exceed 28℃, and the oil temperature at the bearing outlet shall not exceed 71C:
c.
The effective value of the vibration velocity shall not exceed 4.6mm/s. 3.2 Structure
3.2.1 Basic design requirements
3.2.1.1 Under the specified working conditions, the design life of the fan and its auxiliary equipment shall be at least 10 years (except for wearing parts), and the safe operation time before the first overhaul shall be not less than 18,000 hours. The design life of the rolling bearing shall be not less than 25,000 hours. 3.2.1.2 The critical speed of the rigid shaft of the fan shall be more than 1.3 times the maximum working speed. 3.2.1.3 The type, size, parameters and performance curve of the fan shall comply with the provisions of GB3235 and JB/T6885 "Dimensions of Circular Flanges of Fans".
3.2.1.4
For fans with the same machine number in the same series, their components (including spare parts and spare components) shall be interchangeable. 3.2.1.5 The supplier is not responsible for the basic design of the fan, but the supplier shall provide the following data: static and dynamic loads and application points of the fan; a.
b. The requirements for the amplitude and frequency of its foundation. 3.2.1.6 Exposed couplings or pulleys should be equipped with removable protective devices. 3.2.1.7 The installation surface of the fan should be flat and in good contact with the foundation surface or platform. 3.2.1.8 The fan impeller rotates clockwise when viewed from the drive end, and can also rotate counterclockwise if necessary. The fan's highest efficiency point should be within the stable area. 3.2.1.9
3.2.2 Casing
3.2.2.1 The casing is generally made of steel plates, and its shape should ensure that the inhaled medium can enter the impeller evenly and be effectively guided to the outlet when discharged from the impeller. No pulsation or large vortex should be generated, and pressure loss should be reduced. 3.2.2.2 For fans with a rotor diameter equal to or greater than 2500mm, the casing and air inlet box are allowed to be partially made of cement structure. 3.2.2.3 The casing should have sufficient rigidity to minimize the deformation and vibration of the casing. 3.2.2.4 In order to reduce gas leakage at the joint of the center flange, it is allowed to fill the flange with sealing filler. 3.2.2.5 The side plates and volute plates of the casing are allowed to be spliced, and the requirements shall comply with the provisions of ZBJ72039. 3.2.3 Impeller
3.2.3.1 The impeller is generally a welded structure, and the welding quality shall comply with the provisions of ZBJ72038. 3.2.3.2 The wheel disc and the hub are clearance-fitted, and are generally connected by rivets. The riveting quality shall comply with the provisions of ZBJ72039. 3.2.3.3 The wheel disc and wheel cover are allowed to be spliced, and the requirements shall comply with the provisions of ZBJ72039. 3.2.3.4 Each impeller shall be balanced and corrected, and its balance quality grade shall comply with the provisions of ZBJ72042. 3.2.3.5 The impeller shall meet the requirements of overrunning at 110% of the maximum operating speed and comply with the provisions of JB/T6445. 3.2.3.6 The impeller and the main shaft are generally connected by keys, and there should be fastening devices in the longitudinal direction of the shaft, and they must not be loose during operation. 305
15885
JB/T435593
3.2.3.7 The impeller should have sufficient rigidity and should not be deformed during transportation and operation. 3.2.3.8 The profile, assembly and processing accuracy of the blades should comply with the provisions of ZBJ72039. 3.2.3.9 Except for the shaft hole, the other surfaces of the impeller shall be painted R03 bright red paint in accordance with GB3181 or in accordance with the contract. 3.2.4 Main shaft
3.2.4.1 The main shaft is generally made of high-quality carbon steel and has sufficient strength and rigidity. 3.2.4.2 When the main shaft is made of forged steel, stress relief treatment should be carried out. 3.2.5 Bearings
3.2.5.1 Rolling bearings are generally used for fans, and their specifications and dimensions shall comply with the provisions of relevant standards. 3.2.5.2 The matching of rolling bearings with shafts and housings shall comply with the provisions of GB275. 3.2.5.3 Rolling bearings shall be lubricated with grease that meets the use conditions. 3.2.5.4 The shaft hole of the bearing box shall be equipped with a shaft seal to prevent grease leakage and impurities from invading. 3.2.5.5 Sliding bearings can be used for fans with machine numbers above No. 28. 3.2.6 Coupling
The coupling of the fan should generally be selected according to (B4323. 3.2.7 Pulley
3.2.7.1 The fan generally uses a V-belt pulley made of cast iron. 3.2.7.2 The V-belt should comply with the provisions of GB1171, and the belt speed shall not exceed 25m/s. 3.2.7.3 The pulley that is not fully machined should be balanced and corrected according to the provisions of ZBJ72042. 3.2.8 Instruments
3.2.8.1 A temperature monitoring device should be installed at the bearing. 3.2.8.2 If the purchaser has requirements, other temperature monitoring instruments should be specified in the contract. 3.3 Materials of main parts
3.3.1 The selected materials shall comply with the provisions of the relevant standards and have a material certificate; for materials without corresponding standards, the chemical composition, mechanical properties and test requirements shall be given.
3.3.2 The materials used for rotating parts shall be subject to chemical inspection and have an inspection report. There shall be no cracks or repair welding of cracks. 3.3.3 For non-rotating parts, cracks can be repaired while ensuring strength, but they must be cleaned and flattened after repair. 3.4 Manufacturing
3.4.1 Casting requirements
3.4.1.1 The quality of cast iron parts shall comply with the provisions of JB/T6887 "Technical Conditions for Cast Iron Parts for Fans". 3.4.1.2 The quality of steel castings shall comply with the provisions of JB/T6888 & "Technical Conditions for Castings for Fans". 3.4.2 Welding requirements
3.4.2.1 The welding quality shall comply with the provisions of ZBJ72038. 3.4.2.2 Fan welders must pass the "Fan welder assessment standards" before they can weld rotating parts. 3.4.2.3 After welding rotating parts, the weld must be visually inspected and no cracks are allowed. The internal inspection of the weld should be specified in the drawing. 3.4.2.4 The welding rod should be selected according to the material of the part, and its mechanical properties should not be lower than those of the parent material. 3.5 Assembly requirements
3.5.1 The supplier should assemble the fan and its accessories at the manufacturer within the scope allowed by the maximum size of the shipped parts to meet the requirement of minimum assembly at the site of use.
3.5.2 Parts assembled on site should be correctly printed and marked in obvious places. 3.5.3 For fans with coupling drive, the supplier should provide the axial clearance value of the coupling. 3.5.4 The radial single-side clearance between the air inlet and the inlet of the impeller cover is 0.15%~0.40% of the impeller diameter, and the axial overlap length is 0.8%~1.2% of the impeller diameter.
3.5.5 The center hole of the casing should be coaxial with the shaft. The minimum difference between the hole diameter and the shaft diameter shall not be less than 2.5mm, and the maximum shall not be greater than 306
12mm.
3.6 Others
3.6.1 Appearance and cleanliness
JB/T 4355-93
3.6.1.1 The inner and outer surfaces of the casting should be smooth, without bubbles, cracks and defects with significantly uneven thickness. 3.6.1.2 The outer surface of the casing should be clean, well-proportioned and flat, and the welding points should be repaired and flat. 3.6.1.3 The inner surface of the casing should be coated with anti-rust paint, and the outer surface should be coated with anti-rust paint and decorative paint. 3.6.1.4 The painting of the fan should comply with the provisions of JB/T6886 "Technical Conditions for Painting of Fans". 3.6.1.5 The bearing parts shall not leak oil.
The machined surfaces of the main shaft, coupling, impeller shaft hole and pulley should be coated with grease or other methods to prevent rust. 3. 6. 1. 6
3. 6. 1. 7
Before shipment, the fan must be clean inside and outside. The appearance and cleanliness of the fan should comply with the provisions of JB/TQ339 "Appearance Quality and Cleanliness of Fan Products". 3. 6.1. 8
3.6.2
Completeness
3.6.2.1
a.
h.
c.
d.
e.
f.
g.
h.
i.
j.
k.
3.6.2.2
Ventilator 1 The general scope of supply shall include the following: fan body;
motor;
transmission device;
coupling (coupling drive type):
pulley and V-belt (belt drive type); protective device;
guide rail (belt drive type);
anchor bolt;
product certificate;
product manual;
packing list.
According to the requirements of the purchaser, silencer, monitoring instrument, etc. can be provided. 3.6.3 Installation
3.6.3.1
The installation of the fan shall be the responsibility of the purchaser. If necessary, the supplier shall send experienced technicians to provide technical services for installation and startup. The supplier shall provide the following information regarding installation requirements: 3.6.3.2
a.
b.
d.
e.
f.
g.
h.
The estimated weight of the fan when transported as a whole; the approximate weight of the parts transported as loose parts and the dimensions and weight of the larger parts; the requirements for on-site component installation (bolting or welding); the mode of transportation (road, rail, water); installation or assembly details, welding specifications, the scope of required on-site work, installation clearances, operation and maintenance manuals; the requirements for foundations, loads, and fasteners; the list of instruments, dials, piping systems, and auxiliary equipment: installation procedures.
4 Test methods
4.1 The aerodynamic performance test of the fan shall be carried out in accordance with the provisions of GB1236. For fans with machine numbers above No. 28, the aerodynamic performance test of the fan may be carried out on-site in accordance with the provisions of GB10178. 4.2 Conduct the noise test of the fan in accordance with the provisions of GB/T2888. 4.3 Mechanical operation test of the fan
Accelerate the speed from zero to the specified speed, and measure the bearing temperature rise and vibration after the bearing temperature stabilizes for at least 20 minutes. The vibration should be in accordance with the provisions of 307
.
i
JB/TQ334% Fan Vibration Accuracy". JB/T4355-93
4.4 Perform the balance correction of the impeller (or rotor) and the pulley in accordance with the provisions of ZBJ72042. 4.5 Perform the overspeed test of the impeller in accordance with the provisions of JB/T6445. 4.6 Perform the field test of the fan in accordance with the provisions of GB10178. 5 Inspection rules
The inspection of the fan shall comply with the provisions of GB/T13275 or the contract provisions. 6 Warranty period
The warranty period shall comply with the provisions of GB/T13275. 7 Marking, packaging, and transportation
7.1 Marking
7.1.1
a.
b.
c.
d.
e.
7.1.2
7.1.3
7.1.4
Nameplates should be placed in obvious locations on fans and auxiliary equipment, and the contents include: model and name;
Main technical parameters: fan total pressure (or static pressure) Pa, kPa, flow m2/min, motor power kW, speed r/min; product number;
Manufacture date;
Manufacturer name and trademark.
On the fan (or parts and components), there should be a mark indicating the rotation direction and adjustment position of the impeller (or rotor). The size and technical requirements of the product label shall comply with the provisions of GB/T13306 and shall be firmly fixed on the casing. The packaging mark shall comply with the provisions of JB/T6444. 7.2 Packaging
7.2.1
The packaging of the fan shall comply with the provisions of JB/T6444. 7.2.2 Simple packaging is allowed, and the materials shall comply with the provisions of JB/T6444, but the motor, instrument, bearing, coupling and pulley must be waterproof and moisture-proof, and the instrument shall be vibration-proof. 7.2.3 Protective measures shall be taken for flange connectors, and 10mm or thicker wooden boards or other suitable materials can be used to fix them on the flange surface. 7.3 Transportation
7.3.1
The transportation of the fan shall comply with the requirements of the relevant transportation departments of railways, highways and waterways. 7.3.2
The fan shall be protected from rain during transportation.
Additional Notes:
This standard was proposed and managed by the National Technical Committee for Standardization of Fans. This standard was drafted by the Shenyang Blower Research Institute. The main drafters of this standard are Guo Qingfu, Chen Mingliang, and Xu Kuichang. This standard was first issued in December 1986 and reviewed and confirmed in December 1992. 308
4.2.2 Ventilator welders must pass the "Ventictor Welder Assessment Standard" before they can weld rotating parts. 3.4.2.3 After the rotating parts are welded, the weld must be visually inspected and there must be no cracks. Internal inspection of welds shall be specified in the drawings. 3.4.2.4 The welding rod should be selected according to the material of the part, and its mechanical properties should not be lower than those of the base material. 3.5 Assembly requirements
3.5.1 The supplier shall assemble the ventilator and its accessories in the manufacturing plant within the allowable size of the largest shipment, so as to meet the minimum assembly requirements at the use site.
3.5.2 Parts assembled on site should be correctly printed on obvious parts. 3.5.3 For coupling-driven fans, the supplier should provide the axial clearance value of the coupling. 3.5.4 The radial one-sided gap between the air inlet and the impeller cover inlet is 0.15% to 0.40% of the impeller diameter, and the axial overlap length is 0.8% to 1.2% of the impeller diameter.
3.5.5 The center hole of the casing and the shaft should be kept coaxial. The minimum difference between the hole diameter and the shaft diameter shall not be less than 2.5mm, and the maximum value shall not be greater than 306
12mm.
3.6 Others
3.6.1 Appearance and cleanliness
JB/T 4355-93
3.6.1.1 The inner and outer surfaces of the casting should be smooth and there should be no bubbles , cracks and defects with significantly uneven thickness. 3.6.1.2 The outer surface of the casing should be clean, balanced and flat, and the welding joints should be repaired and flat. 3.6.1.3 The inner surface of the casing should be coated with anti-rust paint, and the outer surface should be coated with anti-rust paint and decorative paint. 3.6.1.4 Ventilator painting should comply with the provisions of JB/T6886 "Technical Conditions for Ventilator Painting". 3.6.1.5 The bearing parts shall not leak oil.
The machined surfaces of the main shaft, coupling, impeller shaft hole and pulley should be coated with grease or rust-proofed by other methods. 3. 6. 1. 6
3. 6. 1. 7
Before shipment, the ventilator must be clean inside and outside. The appearance and cleanliness of the ventilator should comply with the provisions of JB/TQ339 "Appearance Quality and Cleanliness of Ventilator Products". 3. 6.1. 8
3.6.2
Completeness
3.6.2.1
a.
h.
c.| |tt||d.
e.
f.
g.
h.
i.
j.|| tt | tt||Coupling (coupling drive type):
Pulley and V-belt (belt drive type); protective device;
Guide rail (belt drive type);
Ground Anchor bolts;
Product certificate;
Product manual;
Packing list.
According to the requirements of the buyer, silencers, monitoring instruments, etc. can be provided. 3.6.3 Installation
3.6.3.1
The purchaser is responsible for the installation of the ventilator. If necessary, the supplier should send experienced technical personnel to provide technical services for installation and startup. The supplier shall provide information related to installation requirements: 3.6.3.2
a.
b.
d.
e.
f.|| tt | connection or welding); mode of transportation (road, railway, waterway); installation or assembly details, welding specifications, scope of required on-site work, installation clearances, operation and maintenance manuals; basic requirements, loads, fasteners related information; instruments , dials, ductwork and ancillary equipment inventory: Installation procedures.
4 Test methods
4.1 Carry out the aerodynamic performance test of the ventilator according to the provisions of GB1236. For the ventilator No. 28 or above, the aerodynamic performance of the ventilator can be carried out on site according to the provisions of GB10178. Performance testing. 4.2 Carry out the fan noise test according to the provisions of GB/T2888. 4.3 Mechanical operation test of the ventilator
Accelerate the speed from zero to the specified speed, and measure the bearing temperature rise and vibration after at least 20 minutes after the bearing temperature stabilizes. The vibration should be in accordance with 307
||tt ||.
i
JB/TQ334% Ventilator Vibration Accuracy". JB/T4355—93
4.4 Perform balance correction of the impeller (or rotor) and pulley according to the provisions of ZBJ72042. 4.5 Carry out the overspeed test of the impeller according to the provisions of JB/T6445. 4.6 Conduct on-site tests of ventilators in accordance with the provisions of GB10178. 5 Inspection rules
The inspection of ventilators shall comply with the provisions of GB/T13275 or as specified in the contract. 6Guarantee period
The guarantee period shall comply with the provisions of GB/T13275. 7 logo, packaging, transportation
7.1 logo
7.1.1
a.
b.
c.
d.| |tt||e.
7.1.2
7.1.3
7.1.4
Nameplates should be provided in conspicuous locations on ventilators and auxiliary equipment. Content includes: model and name;
Main technical parameters: fan full pressure (or static pressure) Pa, kPa, flow rate m2/min, motor power kW, speed r/min; product number; ||tt| |Date of manufacture;
Manufacturer’s name and trademark. www.bzxz.net
On the fan (or parts or components), there should be signs indicating the direction of rotation and adjustment position of the impeller (or rotor). The size and technical requirements of the product label should comply with the regulations of GB/T13306, and should be firmly fixed on the casing. Packaging markings should comply with the regulations of JB/T6444. 7.2 Packaging
7.2.1
Ventilator packaging should comply with the regulations of JB/T6444. 7.2.2 Simple packaging is allowed, and the materials should comply with the provisions of JB/T6444, but the motor, instrument, bearings, couplings and pulleys must be waterproof and moisture-proof, and the instrument should be anti-vibration. 7.2.3 Protective measures should be taken for flange connections, and wooden boards or other suitable materials of 10 mm or thicker can be used to fix them on the flange surface. 7.3 Transportation
7.3.1
The transportation of ventilators should comply with the requirements of the relevant transportation departments of railways, highways, and waterways. 7.3.2
The ventilator should be protected from rain during transportation.
Additional notes:
This standard is proposed and managed by the National Technical Committee for Fan Standardization. This standard is drafted by Shenyang Blower Research Institute. The main drafters of this standard: Guo Qingfu, Chen Mingliang, and Xu Kuichang. This standard was first released in December 1986 and reviewed and confirmed in December 1992. 308
4.2.2 Ventilator welders must pass the "Ventictor Welder Assessment Standard" before they can weld rotating parts. 3.4.2.3 After the rotating parts are welded, the weld must be visually inspected and there must be no cracks. Internal inspection of welds shall be specified in the drawings. 3.4.2.4 The welding rod should be selected according to the material of the part, and its mechanical properties should not be lower than those of the base material. 3.5 Assembly requirements
3.5.1 The supplier shall assemble the ventilator and its accessories in the manufacturing plant within the allowable size of the largest shipment, so as to meet the minimum assembly requirements at the use site.
3.5.2 Parts assembled on site should be correctly printed on obvious parts. 3.5.3 For coupling-driven fans, the supplier should provide the axial clearance value of the coupling. 3.5.4 The radial one-sided gap between the air inlet and the impeller cover inlet is 0.15% to 0.40% of the impeller diameter, and the axial overlap length is 0.8% to 1.2% of the impeller diameter.
3.5.5 The center hole of the casing and the shaft should be kept coaxial. The minimum difference between the hole diameter and the shaft diameter shall not be less than 2.5mm, and the maximum value shall not be greater than 306
12mm.
3.6 Others
3.6.1 Appearance and cleanliness
JB/T 4355-93
3.6.1.1 The inner and outer surfaces of the casting should be smooth and there should be no bubbles , cracks and defects with significantly uneven thickness. 3.6.1.2 The outer surface of the casing should be clean, balanced and smooth, and the welding joints should be repaired and smooth. 3.6.1.3 The inner surface of the casing should be coated with anti-rust paint, and the outer surface should be coated with anti-rust paint and decorative paint. 3.6.1.4 Ventilator painting should comply with the provisions of JB/T6886 "Technical Conditions for Ventilator Painting". 3.6.1.5 The bearing parts shall not leak oil.
The machined surfaces of the main shaft, coupling, impeller shaft hole and pulley should be coated with grease or rust-proofed by other methods. 3. 6. 1. 6
3. 6. 1. 7
Before shipment, the ventilator must be clean inside and outside. The appearance and cleanliness of the ventilator should comply with the provisions of JB/TQ339 "Appearance Quality and Cleanliness of Ventilator Products". 3. 6.1. 8
3.6.2
Completeness
3.6.2.1
a.
h.
c.| |tt||d.
e.
f.
g.
h.
i.
j.|| tt | tt||Coupling (coupling drive type):
Pulley and V-belt (belt drive type); protective device;
Guide rail (belt drive type);
Ground Anchor bolts;
Product certificate;
Product manual;
Packing list.
According to the requirements of the buyer, silencers, monitoring instruments, etc. can be provided. 3.6.3 Installation
3.6.3.1
The purchaser is responsible for the installation of the ventilator. If necessary, the supplier should send experienced technical personnel to provide technical services for installation and startup. The supplier shall provide information related to installation requirements: 3.6.3.2
a.
b.
d.
e.
f.|| tt | | g. | | tt | | h. | connection or welding); mode of transportation (road, railway, waterway); installation or assembly details, welding specifications, scope of required on-site work, installation clearances, operation and maintenance manuals; basic requirements, loads, fasteners related information; instruments , dials, ductwork and ancillary equipment inventory: Installation procedures.
4 Test methods
4.1 Carry out the aerodynamic performance test of the ventilator according to the provisions of GB1236. For the ventilator No. 28 or above, the aerodynamic performance of the ventilator can be carried out on site according to the provisions of GB10178. Performance testing. 4.2 Carry out the fan noise test according to the provisions of GB/T2888. 4.3 Mechanical operation test of the fan
Accelerate the speed from zero to the specified speed, and measure the bearing temperature rise and vibration after at least 20 minutes after the bearing temperature stabilizes. The vibration should be in accordance with 307
||tt ||.
i
JB/TQ334% Ventilator Vibration Accuracy" regulations. JB/T4355—93
4.4 Perform balance correction of the impeller (or rotor) and pulley according to the provisions of ZBJ72042. 4.5 Carry out the overspeed test of the impeller according to the provisions of JB/T6445. 4.6 Conduct on-site tests of ventilators in accordance with the provisions of GB10178. 5 Inspection rules
The inspection of ventilators shall comply with the provisions of GB/T13275 or as specified in the contract. 6Guarantee period
The guarantee period shall comply with the provisions of GB/T13275. 7 logo, packaging, transportation
7.1 logo
7.1.1
a.
b.
c.
d.| |tt | Content includes: model and name;
Main technical parameters: fan full pressure (or static pressure) Pa, kPa, flow rate m2/min, motor power kW, speed r/min; product number; ||tt| |Date of manufacture;
Manufacturer name and trademark.
On the fan (or parts or components), there should be signs indicating the direction of rotation and adjustment position of the impeller (or rotor). The size and technical requirements of the product label should comply with the regulations of GB/T13306, and should be firmly fixed on the casing. Packaging markings should comply with the regulations of JB/T6444. 7.2 Packaging
7.2.1
Ventilator packaging should comply with the regulations of JB/T6444. 7.2.2 Simple packaging is allowed, and the materials should comply with the provisions of JB/T6444, but the motor, instrument, bearings, couplings and pulleys must be waterproof and moisture-proof, and the instrument should be anti-vibration. 7.2.3 Protective measures should be taken for flange connections, and wooden boards or other suitable materials of 10 mm or thicker can be used to fix them on the flange surface. 7.3 Transportation
7.3.1
The transportation of ventilators should comply with the requirements of the relevant transportation departments of railways, highways, and waterways. 7.3.2
The ventilator should be protected from rain during transportation.
Additional notes:
This standard is proposed and managed by the National Technical Committee for Fan Standardization. This standard is drafted by Shenyang Blower Research Institute. The main drafters of this standard: Guo Qingfu, Chen Mingliang, and Xu Kuichang. This standard was first released in December 1986 and reviewed and confirmed in December 1992. 308
5. The bearing parts must not leak oil.
The machined surfaces of the main shaft, coupling, impeller shaft hole and pulley should be coated with grease or rust-proofed by other methods. 3. 6. 1. 6
3. 6. 1. 7
Before shipment, the ventilator must be clean inside and outside. The appearance and cleanliness of the ventilator should comply with the provisions of JB/TQ339 "Appearance Quality and Cleanliness of Ventilator Products". 3. 6.1. 8
3.6.2
Completeness
3.6.2.1
a.
h.
c.| |tt||d.
e.
f.
g.
h.
i.
j.|| tt | tt||Coupling (coupling drive type):
Pulley and V-belt (belt drive type); protective device;
Guide rail (belt drive type);
Ground Anchor bolts;
Product certificate;
Product manual;
Packing list.
According to the requirements of the buyer, silencers, monitoring instruments, etc. can be provided. 3.6.3 Installation
3.6.3.1
The purchaser is responsible for the installation of the ventilator. If necessary, the supplier should send experienced technical personnel to provide technical services for installation and startup. The supplier shall provide information related to installation requirements: 3.6.3.2
a.
b.
d.
e.
f.|| tt | connection or welding); mode of transportation (road, railway, waterway); installation or assembly details, welding specifications, scope of required on-site work, installation clearances, operation and maintenance manuals; basic requirements, loads, fasteners related information; instruments , dials, ductwork and ancillary equipment inventory: Installation procedures.
4 Test methods
4.1 Carry out the aerodynamic performance test of the ventilator according to the provisions of GB1236. For the ventilator No. 28 or above, the aerodynamic performance of the ventilator can be carried out on site according to the provisions of GB10178. Performance testing. 4.2 Carry out the fan noise test according to the provisions of GB/T2888. 4.3 Mechanical operation test of the fan
Accelerate the speed from zero to the specified speed, and measure the bearing temperature rise and vibration after at least 20 minutes after the bearing temperature stabilizes. The vibration should be in accordance with 307
||tt ||.
i
JB/TQ334% Ventilator Vibration Accuracy" regulations. JB/T4355—93
4.4 Perform balance correction of the impeller (or rotor) and pulley according to the provisions of ZBJ72042. 4.5 Carry out the overspeed test of the impeller according to the provisions of JB/T6445. 4.6 Conduct on-site tests of ventilators in accordance with the provisions of GB10178. 5 Inspection rules
The inspection of ventilators shall comply with the provisions of GB/T13275 or as specified in the contract. 6Guarantee period
The guarantee period shall comply with the provisions of GB/T13275. 7 logo, packaging, transportation
7.1 logo
7.1.1
a.
b.
c.
d.| |tt||e.
7.1.2
7.1.3
7.1.4
Nameplates should be provided in conspicuous locations on ventilators and auxiliary equipment. Content includes: model and name;
Main technical parameters: fan full pressure (or static pressure) Pa, kPa, flow rate m2/min, motor power kW, speed r/min; product number; ||tt| |Date of manufacture;
Manufacturer’s name and trademark.
On the fan (or parts or components), there should be signs indicating the direction of rotation and adjustment position of the impeller (or rotor). The size and technical requirements of the product label should comply with the regulations of GB/T13306, and should be firmly fixed on the casing. Packaging markings should comply with the regulations of JB/T6444. 7.2 Packaging
7.2.1
Ventilator packaging should comply with the regulations of JB/T6444. 7.2.2 Simple packaging is allowed, and the materials should comply with the provisions of JB/T6444, but the motor, instrument, bearings, couplings and pulleys must be waterproof and moisture-proof, and the instrument should be anti-vibration. 7.2.3 Protective measures should be taken for flange connections, and wooden boards or other suitable materials of 10 mm or thicker can be used to fix them on the flange surface. 7.3 Transportation
7.3.1
The transportation of ventilators should comply with the requirements of the relevant transportation departments of railways, highways, and waterways. 7.3.2
The ventilator should be protected from rain during transportation.
Additional notes:
This standard is proposed and centralized by the National Technical Committee for Fan Standardization. This standard is drafted by Shenyang Blower Research Institute. The main drafters of this standard: Guo Qingfu, Chen Mingliang, and Xu Kuichang. This standard was first released in December 1986 and reviewed and confirmed in December 1992. 308
5. The bearing parts must not leak oil.
The machined surfaces of the main shaft, coupling, impeller shaft hole and pulley should be coated with grease or rust-proofed by other methods. 3. 6. 1. 6
3. 6. 1. 7
Before shipment, the ventilator must be clean inside and outside. The appearance and cleanliness of the ventilator should comply with the provisions of JB/TQ339 "Appearance Quality and Cleanliness of Ventilator Products". 3. 6.1. 8
3.6.2
Completeness
3.6.2.1
a.
h.
c.| |tt||d.
e.
f.
g.
h.
i.
j.|| tt | tt||Coupling (coupling drive type):
Pulley and V-belt (belt drive type); protective device;
Guide rail (belt drive type);
Ground Anchor bolts;
Product certificate;
Product manual;
Packing list.
According to the requirements of the buyer, silencers, monitoring instruments, etc. can be provided. 3.6.3 Installation
3.6.3.1
The purchaser is responsible for the installation of the ventilator. If necessary, the supplier should send experienced technical personnel to provide technical services for installation and startup. The supplier shall provide information related to installation requirements: 3.6.3.2
a.
b.
d.
e.
f.|| tt | connection or welding); mode of transportation (road, railway, waterway); installation or assembly details, welding specifications, scope of required on-site work, installation clearances, operation and maintenance manuals; basic requirements, loads, fasteners related information; instruments , dials, ductwork and ancillary equipment inventory: Installation procedures.
4 Test methods
4.1 Carry out the aerodynamic performance test of the ventilator according to the provisions of GB1236. For the ventilator No. 28 or above, the aerodynamic performance of the ventilator can be carried out on site according to the provisions of GB10178. Performance testing. 4.2 Carry out the fan noise test according to the provisions of GB/T2888. 4.3 Mechanical operation test of the ventilator
Accelerate the speed from zero to the specified speed, and measure the bearing temperature rise and vibration after at least 20 minutes after the bearing temperature stabilizes. The vibration should be in accordance with 307
||tt ||.
i
JB/TQ334% Ventilator Vibration Accuracy" regulations. JB/T4355—93
4.4 Perform balance correction of the impeller (or rotor) and pulley according to the provisions of ZBJ72042. 4.5 Carry out the overspeed test of the impeller according to the provisions of JB/T6445. 4.6 Conduct on-site tests of ventilators in accordance with the provisions of GB10178. 5 Inspection rules
The inspection of ventilators shall comply with the provisions of GB/T13275 or as specified in the contract. 6Guarantee period
The guarantee period shall comply with the provisions of GB/T13275. 7 logo, packaging, transportation
7.1 logo
7.1.1
a.
b.
c.
d.| |tt||e.
7.1.2
7.1.3
7.1.4
Nameplates should be provided in conspicuous locations on ventilators and auxiliary equipment. Content includes: model and name;
Main technical parameters: fan full pressure (or static pressure) Pa, kPa, flow rate m2/min, motor power kW, speed r/min; product number;||tt| |Date of manufacture;
Manufacturer’s name and trademark.
On the fan (or parts or components), there should be signs indicating the direction of rotation and adjustment position of the impeller (or rotor). The size and technical requirements of the product label should comply with the regulations of GB/T13306, and should be firmly fixed on the casing. Packaging markings should comply with the regulations of JB/T6444. 7.2 Packaging
7.2.1
Ventilator packaging should comply with the regulations of JB/T6444. 7.2.2 Simple packaging is allowed, and the materials should comply with the provisions of JB/T6444, but the motor, instrument, bearings, couplings and pulleys must be waterproof and moisture-proof, and the instrument should be anti-vibration. 7.2.3 Protective measures should be taken for flange connections, and wooden boards or other suitable materials of 10 mm or thicker can be used to fix them on the flange surface. 7.3 Transportation
7.3.1
The transportation of ventilators should comply with the requirements of the relevant transportation departments of railways, highways, and waterways. 7.3.2
The ventilator should be protected from rain during transportation.
Additional notes:
This standard is proposed and centralized by the National Technical Committee for Fan Standardization. This standard is drafted by Shenyang Blower Research Institute. The main drafters of this standard: Guo Qingfu, Chen Mingliang, and Xu Kuichang. This standard was first released in December 1986 and reviewed and confirmed in December 1992. 308
6. Conduct on-site tests of ventilators in accordance with the provisions of GB10178. 5 Inspection rules
The inspection of ventilators shall comply with the provisions of GB/T13275 or as specified in the contract. 6Guarantee period
The guarantee period shall comply with the provisions of GB/T13275. 7 logo, packaging, transportation
7.1 logo
7.1.1
a.
b.
c.
d.| |tt||e.
7.1.2
7.1.3
7.1.4
Nameplates should be provided in conspicuous locations on ventilators and auxiliary equipment. Content includes: model and name;
Main technical parameters: fan full pressure (or static pressure) Pa, kPa, flow rate m2/min, motor power kW, speed r/min; product number; ||tt| |Date of manufacture;
Manufacturer name and trademark.
On the fan (or parts or components), there should be signs indicating the direction of rotation and adjustment position of the impeller (or rotor). The size and technical requirements of the product label should comply with the regulations of GB/T13306, and should be firmly fixed on the casing. Packaging markings should comply with the regulations of JB/T6444. 7.2 Packaging
7.2.1
Ventilator packaging should comply with the regulations of JB/T6444. 7.2.2 Simple packaging is allowed, and the materials should comply with the provisions of JB/T6444, but the motor, instrument, bearings, couplings and pulleys must be waterproof and moisture-proof, and the instrument should be anti-vibration. 7.2.3 Protective measures should be taken for flange connections, and wooden boards or other suitable materials of 10 mm or thicker can be used to fix them on the flange surface. 7.3 Transportation
7.3.1
The transportation of ventilators should comply with the requirements of the relevant transportation departments of railways, highways, and waterways. 7.3.2
The ventilator should be protected from rain during transportation.
Additional notes:
This standard is proposed and centralized by the National Technical Committee for Fan Standardization. This standard is drafted by Shenyang Blower Research Institute. The main drafters of this standard: Guo Qingfu, Chen Mingliang, and Xu Kuichang. This standard was first released in December 1986 and reviewed and confirmed in December 1992. 308
6. Conduct on-site tests of ventilators in accordance with the provisions of GB10178. 5 Inspection rules
The inspection of ventilators shall comply with the provisions of GB/T13275 or as specified in the contract. 6Guarantee period
The guarantee period shall comply with the provisions of GB/T13275. 7 logo, packaging, transportation
7.1 logo
7.1.1
a.
b.
c.
d.| |tt||e.
7.1.2
7.1.3
7.1.4
Nameplates should be provided in conspicuous locations on ventilators and auxiliary equipment. Content includes: model and name;
Main technical parameters: fan full pressure (or static pressure) Pa, kPa, flow rate m2/min, motor power kW, speed r/min; product number; ||tt| |Date of manufacture;
Manufacturer’s name and trademark.
On the fan (or parts or components), there should be signs indicating the direction of rotation and adjustment position of the impeller (or rotor). The size and technical requirements of the product label should comply with the regulations of GB/T13306, and should be firmly fixed on the casing. Packaging markings should comply with the regulations of JB/T6444. 7.2 Packaging
7.2.1
Ventilator packaging should comply with the regulations of JB/T6444. 7.2.2 Simple packaging is allowed, and the materials should comply with the provisions of JB/T6444, but the motor, instrument, bearings, couplings and pulleys must be waterproof and moisture-proof, and the instrument should be anti-vibration. 7.2.3 Protective measures should be taken for flange connections, and wooden boards or other suitable materials of 10 mm or thicker can be used to fix them on the flange surface. 7.3 Transportation
7.3.1
The transportation of ventilators should comply with the requirements of the relevant transportation departments of railways, highways, and waterways. 7.3.2
The ventilator should be protected from rain during transportation.
Additional notes:
This standard is proposed and managed by the National Technical Committee for Fan Standardization. This standard is drafted by Shenyang Blower Research Institute. The main drafters of this standard: Guo Qingfu, Chen Mingliang, and Xu Kuichang. This standard was first released in December 1986 and reviewed and confirmed in December 1992. 308
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