Some standard content:
JB/T4296—1999
This standard is a revision of JB4296-86 "Axial flow fans for mine ventilation". Editorial changes were made to the original standard during the revision, and the main technical content remained unchanged.
This standard replaces JB4296-86 from the date of implementation. This standard is proposed and managed by the National Technical Committee for Fan Standardization. The drafting unit of this standard: Shanghai Blower Factory Co., Ltd. The main drafters of this standard: Fan Yuenan and Liu Huming. 298
1 Scope
Machinery Industry Standard of the People's Republic of China
Axial flow fans for mine ventilations
Axial flow fans for mine ventilationsJB/T4296-1999
Replaces JB4296--86
This standard specifies the technical requirements, quality assurance, test methods, inspection rules, marking, packaging and transportation, storage and maintenance of axial flow fans for mine ventilation.
This standard applies to axial flow main fans (hereinafter referred to as fans) used for ventilation in industrial mines, which can meet the flow rate and pressure required for mine ventilation. The ambient medium temperature is: -45~~+50℃. 2 Cited standards
The clauses contained in the following standards constitute the clauses of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and the parties using this standard should explore the possibility of using the latest versions of the following standards. GB3/T1236--1985 Test method for aerodynamic performance of ventilator GB/T 2888--1991
Method for measuring noise of fan and blower
GB/T 13306-1991
JB/T 6444--1992
JB/T 6886--1993
JB/T 6887-1993
JB/T 8689--1998
General technical conditions for fan packaging
Technical conditions for fan coating
Technical conditions for iron castings for fans
Vibration detection and limit values for general machines
Rotor balancing for fans
JB/T 9101--1999
3 Technical requirements
3.1 Basic design requirements
3.1.1 The fan shall comply with the requirements of this standard and be designed and manufactured in accordance with the drawings, technical documents approved by the prescribed procedures and the technical agreement and economic contract signed by the supply and demand parties.
3.1.2 The maximum full-pressure efficiency of the fan shall be: qualified products: ≥80%; first-class products: 82%; superior products: 84%. 3.1.3 Under the premise of a given speed, the tolerance between the actual efficiency of the operating point and the given efficiency is: 3% at the point close to the maximum efficiency point; 5% in the efficiency area greater than or equal to 75%; the operating point in the efficiency area less than 75% is not assessed. 3.1.4 The fan shall have good adjustment performance to adapt to the progressive changes in the mine's wind volume and wind pressure. The main adjustment methods are: adjustable moving blades during operation, adjustable stationary blades, mechanical one-time adjustable parking moving blades, adjustable parking moving blades one by one, or changing the speed. 3.1.5 When the flow rate is controlled by adjustable moving blades or adjustable stationary blades, the fan should be equipped with a blade limit switch. There should be a sign indicating the blade position and a device to provide electrical communication for remote control on the outside of the fan casing. 3.1.6 The effective value of the fan vibration speed should be: rigidity ≤4.6mm/s; flexibility ≤≤7.1mm/s. 3.1.7 The fan main bearing box, hydraulic lubrication oil supply device and its connecting pipelines are not allowed to have hydraulic oil or lubricating oil leakage. 3.1 .8 When the fan rotor diameter is less than or equal to 3150mm, its design service life is 15 years; when it is greater than 3150mm, its design service life is 20 years. Before the first overhaul, the safe operation time of the fan should be: qualified products: ≥12000h; first-class products: ≥16000h; approved by the State Machinery Industry Bureau on July 12, 1999 and implemented on January 1, 2000
Superior products: ≥24000h.
JB/T 4296—1999
3.1.9 The noise of the fan should meet the requirements of the national environmental protection and health standards, and its noise measurement should comply with the provisions of GB/T2888. If the conditions for measurement according to the above method are not met, it can be carried out according to the agreement between the supply and demand parties. 3.1.10 The fan should be equipped with a surge alarm device. 3.1.11 The natural frequency of the fan blades is not allowed to be within 10% of the 1, 2, 3 times speed and blade transmission frequency. 3.1.12 A drain pipe or screw plug with a diameter of not less than 50mm should be installed at the lowest point of the fan air inlet box. 3.1.13 Flexible connections should be used as much as possible between the fan casing and the air inlet section, the casing and the diffuser (or between the fan inlet and outlet and the casing and the air inlet box).
3.1.14 In order to ensure that the fan has good air inlet and outlet conditions and performance, the system design should reasonably arrange the elbows and pipes before and after the fan inlet. If the air flow direction must be changed before the fan inlet, a guide device should be added. 3.1.15 The foundation design must ensure that the natural frequency of the fan foundation is outside the following range: 0.7n~1.3n;
-0. 8(2 n)1. 2(2 n).
Note: n is the fan speed.
3.1.16 The air intake section (or air intake box) and diffuser shall be equipped with a manhole door that is easy to enter and exit during maintenance and has sealing and detachable. 3.1.17 Each part and component of the fan shall be equipped with a lifting hook or lifting hole, and the coupling shall be equipped with a protective cover. 3.1.18 The main bearing of the fan can use rolling bearings or sliding bearings, and rolling bearings are recommended. 3.1.19 The normal operating temperature of the rolling bearing shall not be higher than 70℃, and the maximum temperature shall not exceed 95C. The bearing temperature rise shall be: qualified products: ≤60℃; first-class products: ≤55℃, and superior products: ≤55℃. The operating temperature of the sliding bearing shall not be higher than 75℃. 3.2 Material requirements
The materials used for the fan shall meet the required strength requirements. 4 Quality Assurance
4.1 The cast iron parts used for the fan shall comply with the provisions of JB/T6887. 4.2 Unless otherwise specified, the welding quality of the fan shall meet the following requirements: the basic type and size of the weld groove shall comply with the provisions of the relevant national standards and the drawings or process requirements; the weld shape shall be smooth and even; the transition between welds and welds and between welds and base metals shall be smooth, and there shall be no sudden changes in the cross section; there shall be no cracks, weld penetrations, or unfilled arc pits on the weld surface; there shall be no weld bumps larger than 2mm on the weld surface, overflows due to the molten metal fading to the unmelted base metal outside the weld, and clustered or mesh-like pores, etc. 4.3 The welded parts of the fan shall be welded by electric welders who have obtained the welder qualification certificate for fan parts. 4.4 The materials used for rotating parts shall have material quality certificates and test reports. 4.5 The main bearing box and hydraulic adjustment device shall be subjected to full-load and full-speed functional tests separately, and the test time shall not be less than 4 hours after normal operation.
4.6 The moving blades can be made of aluminum alloy or forged aluminum alloy and steel plate. The chemical composition, mechanical properties and intrinsic quality of the materials used shall comply with the requirements of the drawings and technical documents. 4.7 The torsion angle deviation of adjacent sections of the moving blades shall be ≤0.5°, and the torsion angle deviation of any section shall be ≤±1°. 4.8 The materials of rotating parts such as the blade stalk, blade and hub, main shaft, intermediate shaft, coupling, etc. shall comply with the relevant standards and drawings, and mechanical property tests and non-destructive testing shall be carried out. 4.9 The installation angle deviation of the moving blades and guide vanes shall not exceed ±2° of the nominal value. 4.10 The maximum difference in the mass (kg) of the blades on the impeller shall not exceed 5%. According to the principle of reducing the unbalanced amount, each blade shall be weighed, and the circumferential position of the blades shall be arranged in sequence according to the balancing procedure to ensure the balancing accuracy. 4.11 The radial distance between the moving blades and the casing shall be 0.001~~0.002 times the rotor diameter or in accordance with the requirements of the drawings. 4.12 The tightening torque of the connecting bolts or screws between the main parts of the fan should be given on the drawing. 300
JB/T4296—1999
4.13 The dynamic balance of the fan rotor should meet the requirements of JB/T9101. 4.14 Before the dynamic balance of the fan rotor, the main parts of the rotor should be balanced separately or in steps. After the assembly, the evaluation level of the dynamic balance should not be lower than the provisions of G4 in JB/T9101--1999. 4.15 The quality of the painted parts of the fan should meet the provisions of JB/T6886. Unless otherwise specified in the contract, the fan outer surface can be allowed to be coated with primer before leaving the factory.
4.16 Under the conditions that the purchaser complies with the provisions on the storage, use, installation and transportation of the fan, the supplier shall repair or replace the parts for the purchaser free of charge if the fan is damaged or cannot work normally due to manufacturing quality problems within 8000 hours after the first start-up; the warranty period of the fan is 18 months from the factory delivery date. 4.17 Safety requirements
4.17.1 According to the different requirements of the fan, it shall comply with the relevant provisions of the "Coal Mine Safety Regulations". 4.17.2 If the fan needs to reverse the wind, the fan's own reverse wind volume shall not be less than 40% of the rated flow rate, and the time to achieve reverse wind shall not exceed 10 minutes.
4.17.3 The material selection of the inner surface of the casing and the blades of the rotating part of the moving blades shall prevent any sparks from being generated. 4.17.4 The connection and fixation of the rotating parts of the fan shall have anti-loosening measures. 5 Test method
5.1 The aerodynamic performance test of the fan shall be carried out in accordance with the requirements of GB/T1236 or determined by negotiation between the supply and demand parties. 5.2 When the fan impeller diameter is less than or equal to 4m, the mechanical operation test shall be carried out in a special workshop in the factory before leaving the factory; when the impeller diameter is greater than 4m, the mechanical operation test of the whole machine shall be decided by negotiation between the supply and demand parties. 5.3 The mechanical operation test of the fan shall be carried out before leaving the factory, and the rated working speed shall be used for operation, and the various functional indicators during mechanical operation shall be recorded in a list. When the test conditions are limited, the mechanical operation test can be carried out at a lower speed. 6 Inspection rules
6.1 Before and after the mechanical operation test of the fan, the radial clearance between the moving blades and the casing shall be inspected and meet the requirements of 4.11.
6.2 The effective value of the vibration velocity of the fan shall meet the provisions of 3.1.6, and the measuring point position shall be on the mid-face flange and the bottom plate of the fan, as shown in Figure 1. The vibration values shall be measured in the vertical, horizontal and axial directions respectively, and the maximum values measured in the three directions shall be evaluated. For fans with bearing boxes installed in the casing, the vibration values can be measured on the casing. Airflow direction
JB/T 4296 - 1999
6.3 Under the conditions specified in 3.1.19, check the main bearing box, hydraulic adjustment device, oil supply device and its connecting oil pipeline. There shall be no oil leakage.
6.4 Inspection of blade adjustment
6.4.1 When static, check the blade installation angle position and the minimum and maximum angle adjustment range. They shall meet the requirements of 4.9 and the drawings. 6.4.2 The adjustment force of the hydraulic adjustment device and the actuator shall meet the range of blade angle adjustment. 6.4.3 When static, check the consistency and repeatability of the blade angle indication scale and the actual blade angle. The deviation shall not exceed 1.7 Scope of complete set
7.1 The supply of fans, the scope of complete sets and the items and quantities of spare parts shall be clearly stated by the supply and demand parties in the contract. 7.2 The main body of the fan generally includes: air intake section (or air intake box), casing, air intake fairing (or fairing guide vane ring), rotor, main bearing box, intermediate shaft, coupling and its cover, blade adjustment mechanism, diffuser, curved blade (or curved with blade), inlet gate, diffuser, brake, sex joint and anchor bolts, etc.
7.3 Auxiliary equipment generally includes: lubricating oil station (or hydraulic lubricating oil station), surge alarm device, pressure and temperature measurement-primary element, bearing box and hydraulic adjustment device oil pipeline and impeller assembly and disassembly special tools, etc. Among them, the hydraulic adjustment oil station and the lubricating oil station can be separated or combined into the same unit.
7.4 The driving motor or other prime mover of the fan. 7.5 The outlet (or import) muffler body of the fan. 8.1.1 There should be a sign in a conspicuous position on the fan or independent component, and its content should include: factory name (country name for export products), product name, model, main performance parameters of the fan or independent component, medium temperature, medium density, product number and manufacturing date, etc. 8.1.2 In a conspicuous position on the housing of the fan or independent component, there should be a sign indicating the direction of rotation and blade angle position as required. 8.1.3 The oil inlet and outlet of the hydraulic, lubrication system and valves in the oil station should have flow direction and oil level indication marks. 8.1.4 The size and technical requirements of the fan sign should comply with the provisions of GB/T13306. 8.2.1 The fan should be packaged according to the number, item and number of pieces specified in the packing list. The packaging box should comply with the provisions of JB/T6444 and comply with the relevant provisions of water, road and railway transportation. 8.2.2 The accompanying documents should be placed in the packaging box of the fan body and packed in a moisture-proof bag. 8.2.3 Simple packaging is allowed for the fan, but the packaging of the fan rotor, main bearing box, motor, oil station, coupling and instrumentation must be waterproof, moisture-proof and vibration-proof.
8.2.4 For the fan with the rotor installed, the openings at both ends of the casing should be closed with wooden covers or substitutes. 8.2.5
A hand hole that can be opened should be set on the wooden cover or substitute on the coupling side so that the rotor can be moved by hand at any time. The exposed and unpainted processed parts of the fan parts should be coated with an anti-rust layer or protected with oil paper cloth tape. 8.2.6
8.2.7 All threaded joints should be plugged with pipe plugs or closed with caps. 8.2.8 Except for the limitation of transportation boundary size or the requirements of site installation, the fan should be delivered as assembled components as much as possible. 9 Storage and Maintenance
9.1 Strictly comply with the storage and maintenance regulations in the fan manual. 9.2 The fan is not allowed to be stored in a humid environment or in an environment with corrosive gases. 9.3 When the exposed parts of the machine processing are stored separately, they must be coated with anti-rust oil or grease and protected with oil paper or plastic film. If these parts need to be stored for a long time, appropriate protective measures should be taken and the corrosion of the processed surface should be checked regularly. 9.4 The fan has major components such as impellers, bearing boxes and instruments, etc., and a basically vibration-free storage location should be considered in advance, and it should be placed in a dry room with a small temperature difference.
JB/T4296-—1999
9.5 Steel structure components can be placed in the open air, but the coating must be checked every 3 months and repaired if necessary. 9.6 The silencer and expansion joint of the muffler are best stored indoors. If stored in the open air, they must be covered to achieve waterproof, moisture-proof and dust-proof effects.
9.7 Maintenance measures for long-term shutdown of the fan after assembly 9.7.1 The storage of the fan shall comply with the provisions of 9.4. The fan bearing box shall be filled with anti-rust oil (anti-rust oil for hydraulic equipment) to the highest oil level (indicated on the oil level indicator), and the hydraulic adjustment device shall be filled with anti-rust oil. The oil level of the bearing box and the hydraulic adjustment device shall be checked once a month, and the missing oil shall be filled up if necessary, and the impeller shall be rotated manually several times per month. 9.7.2 Before storage, it shall also be checked whether the anti-rust measures of the processed surface are complete. 9.7.3 For the intermediate shaft with coupling, if the coupling is assembled with the intermediate shaft or the main shaft, the lining surface shall be coated with anti-rust oil in advance. If they are packaged separately, they shall be stored according to the packaging.
9.7.4 The oil supply device shall be filled with anti-rust oil and stored in a dry room with small temperature difference. The oil level shall be checked monthly and supplemented if necessary. And open the oil drain plug in the device every month to check whether there is precipitated condensed water, and tighten the screw plug when the clean oil flows out. 9.8 According to the supply status, within the warranty period, before the first test run, the supplier's personnel or engineering and technical personnel familiar with the business should participate in the inspection of the fan's complete set of impellers, couplings, oil supply devices and other parts. The test run can only be carried out after the inspection is confirmed to meet the test run conditions.2 The effective value of the fan vibration velocity shall meet the requirements of 3.1.6. The measuring points are located on the fan mid-face flange and the bottom plate below, as shown in Figure 1. The vibration values are measured in the vertical, horizontal and axial directions respectively, and the maximum values measured in the three directions are evaluated. For fans with bearing boxes installed in the casing, the vibration values can be measured on the casing. Airflow direction
JB/T 4296 - 1999
6.3 Under the conditions specified in 3.1.19, check the main bearing box, hydraulic adjustment device, oil supply device and its connecting oil pipeline. There shall be no oil leakage.
6.4 Inspection of blade adjustment
6.4.1 When static, inspect the blade installation angle position and the minimum and maximum angle adjustment range, which shall meet the requirements of 4.9 and the drawing. 6.4.2 The adjustment force of the hydraulic adjustment device and the actuator shall meet the range of blade angle adjustment. 6.4.3 Check the consistency and repeatability of the blade angle indication scale and the actual blade angle in static state, and the deviation shall not exceed 1.7 Scope of complete set
7.1 The supply, scope of complete set and items and quantity of spare parts of the fan shall be clearly stated by the supplier and the buyer in the contract. 7.2 The main body of the fan generally includes: air intake section (or air intake box), casing, air intake fairing (or fairing guide vane ring), rotor, main bearing box, intermediate shaft, coupling and its cover, blade adjustment mechanism, diffuser, curved blade (or curved with blade), inlet gate, diffuser, brake, sex joint and anchor bolt, etc.
7.3 Auxiliary equipment generally includes: lubricating oil station (or hydraulic lubricating oil station), surge alarm device, pressure and temperature measurement-primary element, oil pipeline of bearing box and hydraulic adjustment device and special tools for impeller assembly and disassembly, etc. Among them, the hydraulic adjustment oil station and lubricating oil station can be separated or combined into the same unit.
7.4 Driving motor or other prime mover for the fan. 7.5 Outlet (or inlet) muffler body for the fan. 8 Marking, packaging and transportation
8.1 Marking
8.1.1 There should be a sign in a conspicuous position on the fan or independent component, and its content should include: factory name (country name for export products), product name, model, main performance parameters of the fan or independent component, medium temperature, medium density, product number and manufacturing date, etc. 8.1.2 In a conspicuous position on the housing of the fan or independent component, there should be a sign indicating the direction of rotation and blade angle position as required. 8.1.3 The oil inlet and outlet of the hydraulic, lubrication system and valves in the oil station should all have flow direction and oil level indication marks. 8.1.4 The size and technical requirements of the fan sign should comply with the provisions of GB/T13306. 8.2 Packaging and transportation
8.2.1 The fan should be packed according to the number, item and number of pieces specified in the packing list. The packing box should comply with the provisions of JB/T6444 and should comply with the relevant provisions of water, road and rail transportation. 8.2.2 The accompanying documents should be placed in the packing box of the fan body and packed in a moisture-proof bag. 8.2.3 The fan is allowed to be packed in a simple way, but the packaging of the fan rotor, main bearing box, motor, oil station, coupling and instrumentation must be waterproof, moisture-proof and vibration-proof.
8.2.4 The fan with the rotor installed should be closed at the openings at both ends of the casing with wooden covers or substitutes. 8.2.5
A hand hole that can be opened should be set on the wooden cover or substitute on the coupling side so that the rotor can be moved by hand at any time. The exposed and unpainted processing parts of the fan parts should be coated with an anti-rust layer or protected with oil paper cloth tape. 8.2.6
8.2.7 All threaded joints shall be plugged with pipe plugs or closed with caps. 8.2.8 Except for the limitation of transportation boundary size or the requirement of site installation, the fan shall be delivered as assembled components as much as possible. 9 Storage and maintenance
9.1 Strictly comply with the storage and maintenance regulations in the fan manual. 9.2 The fan shall not be stored in a humid environment or in an environment with corrosive gases. 9.3 When the exposed parts of the machine processing plant are stored separately, they must be coated with anti-rust oil or grease and protected with oil paper or plastic film. If these parts need to be stored for a long time, appropriate protective measures shall be taken and the corrosion of the machined surface shall be checked regularly. 9.4 The fan has major components such as impellers, bearing boxes and instruments, etc., and a storage location with basically no vibration shall be considered in advance, and it shall be placed in a room that is kept dry and has a small temperature difference.
JB/T4296-—1999
9.5 Steel structure components can be placed in the open air, but the coating must be checked every 3 months and repaired if necessary. 9.6 The silencer and expansion joint of the muffler are best stored indoors. If stored in the open air, they must be covered to achieve waterproof, moisture-proof and dust-proof effects.
9.7 Maintenance measures for long-term shutdown of the fan after assembly 9.7.1 The storage of the fan shall comply with the provisions of 9.4. The fan bearing box is filled with anti-rust oil (anti-rust oil for hydraulic equipment) to the highest oil level (indicated on the oil level indicator), and the hydraulic adjustment device is filled with anti-rust oil. The oil level of the bearing box and the hydraulic adjustment device should be checked every 1 month, and the missing oil should be filled up if necessary, and the impeller should be rotated manually several times per month. 9.7.2 Before storage, it is also necessary to check whether the anti-rust measures of the processed surface are complete. 9.7.3 For the intermediate shaft with coupling, if the coupling is assembled with the intermediate shaft or main shaft, the surface of the lining should be coated with anti-rust oil in advance. If they are packaged separately, they should be stored according to the packaging.
9.7.4 The oil supply device should be filled with anti-rust oil and stored in a dry room with small temperature difference. The oil level should be checked monthly and replenished when necessary. The oil drain plug in the device should be opened monthly to check whether there is precipitated condensed water, and the screw plug should be tightened when the clean oil flows out. 9.8 According to the supply status, within the warranty period, before the first test run, the supplier's personnel or engineering and technical personnel familiar with the business should participate in the inspection of the fan's complete set of impellers, couplings, oil supply devices and other parts. The test run can only be carried out after the inspection is confirmed to meet the test run conditions.2 The effective value of the fan vibration velocity shall meet the requirements of 3.1.6. The measuring points are located on the fan mid-face flange and the bottom plate below, as shown in Figure 1. The vibration values are measured in the vertical, horizontal and axial directions respectively, and the maximum values measured in the three directions are evaluated. For fans with bearing housings installed in the casing, the vibration values can be measured on the casing. Airflow direction
JB/T 4296 - 1999
6.3 Under the conditions specified in 3.1.19, check the main bearing housing, hydraulic adjustment device, oil supply device and its connecting oil pipelines. There shall be no oil leakage.
6.4 Inspection of blade adjustmentbZxz.net
6.4.1 When static, inspect the blade installation angle position and the minimum and maximum angle adjustment ranges, which shall meet the requirements of 4.9 and the drawings. 6.4.2 The adjustment force of the hydraulic adjustment device and the actuator shall meet the range of blade angle adjustment. 6.4.3 Check the consistency and repeatability of the blade angle indication scale and the actual blade angle in static state, and the deviation shall not exceed 1.7 Scope of complete set
7.1 The supply, scope of complete set and items and quantity of spare parts of the fan shall be clearly stated by the supplier and the buyer in the contract. 7.2 The main body of the fan generally includes: air intake section (or air intake box), casing, air intake fairing (or fairing guide vane ring), rotor, main bearing box, intermediate shaft, coupling and its cover, blade adjustment mechanism, diffuser, curved blade (or curved with blade), inlet gate, diffuser, brake, sex joint and anchor bolt, etc.
7.3 Auxiliary equipment generally includes: lubricating oil station (or hydraulic lubricating oil station), surge alarm device, pressure and temperature measurement-primary element, oil pipeline of bearing box and hydraulic adjustment device and special tools for impeller assembly and disassembly, etc. Among them, the hydraulic adjustment oil station and lubricating oil station can be separated or combined into the same unit.
7.4 Driving motor or other prime mover for the fan. 7.5 Outlet (or inlet) muffler body for the fan. 8 Marking, packaging and transportation
8.1 Marking
8.1.1 There should be a sign in a conspicuous position on the fan or independent component, and its content should include: factory name (country name for export products), product name, model, main performance parameters of the fan or independent component, medium temperature, medium density, product number and manufacturing date, etc. 8.1.2 In a conspicuous position on the housing of the fan or independent component, there should be a sign indicating the direction of rotation and blade angle position as required. 8.1.3 The oil inlet and outlet of the hydraulic, lubrication system and valves in the oil station should all have flow direction and oil level indication marks. 8.1.4 The size and technical requirements of the fan sign should comply with the provisions of GB/T13306. 8.2 Packaging and transportation
8.2.1 The fan should be packed according to the number, item and number of pieces specified in the packing list. The packing box should comply with the provisions of JB/T6444 and should comply with the relevant provisions of water, road and rail transportation. 8.2.2 The accompanying documents should be placed in the packing box of the fan body and packed in a moisture-proof bag. 8.2.3 The fan is allowed to be packed in a simple way, but the packaging of the fan rotor, main bearing box, motor, oil station, coupling and instrumentation must be waterproof, moisture-proof and vibration-proof.
8.2.4 The fan with the rotor installed should be closed at the openings at both ends of the casing with wooden covers or substitutes. 8.2.5
A hand hole that can be opened should be set on the wooden cover or substitute on the coupling side so that the rotor can be moved by hand at any time. The exposed and unpainted processing parts of the fan parts should be coated with an anti-rust layer or protected with oil paper cloth tape. 8.2.6
8.2.7 All threaded joints shall be plugged with pipe plugs or closed with caps. 8.2.8 Except for the limitation of transportation boundary size or the requirement of site installation, the fan shall be delivered as assembled components as much as possible. 9 Storage and maintenance
9.1 Strictly comply with the storage and maintenance regulations in the fan manual. 9.2 The fan shall not be stored in a humid environment or in an environment with corrosive gases. 9.3 When the exposed parts of the machine processing plant are stored separately, they must be coated with anti-rust oil or grease and protected with oil paper or plastic film. If these parts need to be stored for a long time, appropriate protective measures shall be taken and the corrosion of the machined surface shall be checked regularly. 9.4 The fan has major components such as impellers, bearing boxes and instruments, etc., and a storage location with basically no vibration shall be considered in advance, and it shall be placed in a room that is kept dry and has a small temperature difference.
JB/T4296-—1999
9.5 Steel structure components can be placed in the open air, but the coating must be checked every 3 months and repaired if necessary. 9.6 The silencer and expansion joint of the muffler are best stored indoors. If stored in the open air, they must be covered to achieve waterproof, moisture-proof and dust-proof effects.
9.7 Maintenance measures for long-term shutdown of the fan after assembly 9.7.1 The storage of the fan shall comply with the provisions of 9.4. The fan bearing box is filled with anti-rust oil (anti-rust oil for hydraulic equipment) to the highest oil level (indicated on the oil level indicator), and the hydraulic adjustment device is filled with anti-rust oil. The oil level of the bearing box and the hydraulic adjustment device should be checked every 1 month, and the missing oil should be filled up if necessary, and the impeller should be rotated manually several times per month. 9.7.2 Before storage, it is also necessary to check whether the anti-rust measures of the processed surface are complete. 9.7.3 For the intermediate shaft with coupling, if the coupling is assembled with the intermediate shaft or main shaft, the surface of the lining should be coated with anti-rust oil in advance. If they are packaged separately, they should be stored according to the packaging.
9.7.4 The oil supply device should be filled with anti-rust oil and stored in a dry room with small temperature difference. The oil level should be checked monthly and replenished when necessary. The oil drain plug in the device should be opened monthly to check whether there is precipitated condensed water, and the screw plug should be tightened when the clean oil flows out. 9.8 According to the supply status, within the warranty period, before the first test run, the supplier's personnel or engineering and technical personnel familiar with the business should participate in the inspection of the fan's complete set of impellers, couplings, oil supply devices and other parts. The test run can only be carried out after the inspection is confirmed to meet the test run conditions.2 The accompanying documents should be placed in the packaging box of the fan body and packed in a moisture-proof bag. 8.2.3 Simple packaging is allowed for the fan, but the packaging of the fan rotor, main bearing box, motor, oil station, coupling and instrumentation must be waterproof, moisture-proof and vibration-proof.
8.2.4 For the fan with the rotor installed, the openings at both ends of the casing should be closed with wooden covers or substitutes. 8.2.5
A hand hole that can be opened should be set on the wooden cover or substitute on the coupling side so that the rotor can be moved by hand at any time. The exposed and unpainted processed parts of the fan parts should be coated with an anti-rust layer or protected with oil paper cloth tape. 8.2.6
8.2.7 All threaded joints should be plugged with pipe plugs or closed with caps. 8.2.8 Except for the limitation of transportation boundary size or the requirements of site installation, the fan should be delivered as assembled components as much as possible. 9 Storage and Maintenance
9.1 Strictly follow the storage and maintenance regulations in the fan manual. 9.2 The fan is not allowed to be stored in a humid environment or in an environment with corrosive gases. 9.3 When the exposed parts of the machine processing are stored separately, they must be coated with anti-rust oil or grease and protected with oil paper or plastic film. If these parts need to be stored for a long time, appropriate protective measures should be taken and the corrosion of the processed surface should be checked regularly. 9.4 The fan has major components such as impellers, bearing boxes and instruments, etc., and a basically vibration-free storage location should be considered in advance, and it should be placed in a dry room with a small temperature difference.
JB/T4296-—1999
9.5 Steel structure components can be placed in the open air, but the coating must be checked every 3 months and repaired if necessary. 9.6 The silencer and expansion joint of the muffler are best stored indoors. If stored in the open air, they must be covered to achieve waterproof, moisture-proof and dust-proof effects.
9.7 Maintenance measures for long-term shutdown of the fan after assembly 9.7.1 The storage of the fan shall comply with the provisions of 9.4. The fan bearing box shall be filled with anti-rust oil (anti-rust oil for hydraulic equipment) to the highest oil level (indicated on the oil level indicator), and the hydraulic adjustment device shall be filled with anti-rust oil. The oil level of the bearing box and the hydraulic adjustment device shall be checked once a month, and the missing oil shall be filled up if necessary, and the impeller shall be rotated manually several times per month. 9.7.2 Before storage, it shall also be checked whether the anti-rust measures of the processed surface are complete. 9.7.3 For the intermediate shaft with coupling, if the coupling is assembled with the intermediate shaft or the main shaft, the lining surface shall be coated with anti-rust oil in advance. If they are packaged separately, they shall be stored according to the packaging.
9.7.4 The oil supply device shall be filled with anti-rust oil and stored in a dry room with small temperature difference. The oil level shall be checked monthly and supplemented if necessary. And open the oil drain plug in the device every month to check whether there is precipitated condensed water, and tighten the screw plug when the clean oil flows out. 9.8 According to the supply status, within the warranty period, before the first test run, the supplier's personnel or engineering and technical personnel familiar with the business should participate in the inspection of the fan's complete set of impellers, couplings, oil supply devices and other parts. The test run can only be carried out after the inspection is confirmed to meet the test run conditions.2 The accompanying documents should be placed in the packaging box of the fan body and packed in a moisture-proof bag. 8.2.3 Simple packaging is allowed for the fan, but the packaging of the fan rotor, main bearing box, motor, oil station, coupling and instrumentation must be waterproof, moisture-proof and vibration-proof.
8.2.4 For the fan with the rotor installed, the openings at both ends of the casing should be closed with wooden covers or substitutes. 8.2.5
A hand hole that can be opened should be set on the wooden cover or substitute on the coupling side so that the rotor can be moved by hand at any time. The exposed and unpainted processed parts of the fan parts should be coated with an anti-rust layer or protected with oil paper cloth tape. 8.2.6
8.2.7 All threaded joints should be plugged with pipe plugs or closed with caps. 8.2.8 Except for the limitation of transportation boundary size or the requirements of site installation, the fan should be delivered as assembled components as much as possible. 9 Storage and Maintenance
9.1 Strictly comply with the storage and maintenance regulations in the fan manual. 9.2 The fan is not allowed to be stored in a humid environment or in an environment with corrosive gases. 9.3 When the exposed parts of the machine processing are stored separately, they must be coated with anti-rust oil or grease and protected with oil paper or plastic film. If these parts need to be stored for a long time, appropriate protective measures should be taken and the corrosion of the processed surface should be checked regularly. 9.4 The fan has major components such as impellers, bearing boxes and instruments, etc., and a basically vibration-free storage location should be considered in advance, and it should be placed in a dry room with a small temperature difference.
JB/T4296-—1999
9.5 Steel structure components can be placed in the open air, but the coating must be checked every 3 months and repaired if necessary. 9.6 The silencer and expansion joint of the muffler are best stored indoors. If stored in the open air, they must be covered to achieve waterproof, moisture-proof and dust-proof effects.
9.7 Maintenance measures for long-term shutdown of the fan after assembly 9.7.1 The storage of the fan shall comply with the provisions of 9.4. The fan bearing box shall be filled with anti-rust oil (anti-rust oil for hydraulic equipment) to the highest oil level (indicated on the oil level indicator), and the hydraulic adjustment device shall be filled with anti-rust oil. The oil level of the bearing box and the hydraulic adjustment device shall be checked once a month, and the missing oil shall be filled up if necessary, and the impeller shall be rotated manually several times per month. 9.7.2 Before storage, it shall also be checked whether the anti-rust measures of the processed surface are complete. 9.7.3 For the intermediate shaft with coupling, if the coupling is assembled with the intermediate shaft or the main shaft, the lining surface shall be coated with anti-rust oil in advance. If they are packaged separately, they shall be stored according to the packaging.
9.7.4 The oil supply device shall be filled with anti-rust oil and stored in a dry room with small temperature difference. The oil level shall be checked monthly and supplemented if necessary. And open the oil drain plug in the device every month to check whether there is precipitated condensed water, and tighten the screw plug when the clean oil flows out. 9.8 According to the supply status, within the warranty period, before the first test run, the supplier's personnel or engineering and technical personnel familiar with the business should participate in the inspection of the fan's complete set of impellers, couplings, oil supply devices and other parts. The test run can only be carried out after the inspection is confirmed to meet the test run conditions.
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.