MT 754-2005 Technical specifications for small coal mine surface exhaust axial flow fans
Some standard content:
KS 73. 1Q9.Qt
Materials No.: 16783—2005
Coal Industry Standard of the People's Republic of China
MT 7542005
Generation MT 754—1997.MI/T 7531997
Technical specifications for far extractablc Axial-flow fan used for the ground of Small mine
2005-09-23 issued
National Development and Reform Commission
2006-02-01 implementation
Normative reference documents
4 Product name, main structural features and model 4.1 Anti-drying extraction type axial reduction fan for ground use in coal mines
1.2 Coal pile ground use reinforced explosion-proof extraction type axial dredging double-machine coal mine ground use anti-screw extraction type, single-stage independent ventilation fan 4.3:
Extraction type axial filter fan for ground use in coal mines
5 Technical requirements
5.1 Design and manufacturing requirements
5.2 Safety requirements
5.3 Quality requirements
6 Test methods
? Inspection and testing
7.1 Inspection classification
7.2 Factory compensation
7.3 Type inspection
8 Labeling, packaging, transportation and storage
8.1 Labeling
3.2 Packaging, transportation and storage
9 Warranty period
MT 754—2005
MT754—2005
This standard is compiled in accordance with GB/1.1-2300 Standardization Working Guide Part 1: Standard Structure and Code and GB/1.1-2300 Standardization Working Guide Part 8: Determination of Normative Technical Contents in Standards. It is based on MT754—1997 Technical Specifications of Small Ground Oil-exhaust Axial Flow Fans for Coal Mine and MT/15H—1997 Basic Types and Parameters of Small Ground Oil-exhaust Axial Flow Fans for Coal Mine. This standard will replace MT754—15H—1997 Technical Specifications of Small Ground Oil-exhaust Axial Flow Fans for Coal Mine and MT/T753—1997 Basic Types and Parameters of Small Ground Oil-exhaust Axial Flow Fans for Coal Mine. Compared with MT751-1997, this standard has the following major changes: 1. Added the type and number of fan products (the first part of this standard); 2. The contents of MT/T751-1997 are combined into one standard, except MT/T753-1997; 3. The inspection items "air volume" and "static pressure" of the fan are combined into "static pressure and deviation" (the original standard table 1. The standard table 2 is derived); 4. The noise limit of industrial ventilation in JB/T8689-1999 is now defined as follows: 5. The fan: A The statistical regulations are as follows: (3)
of M/T7531997, the machine numbers in Table 1 of MT/T753-109 have been appropriately increased (Table 12F of 4 standards has eliminated the contents of Table 2 and Table 3 of MT/T755-9, and the fan products must be produced according to the requirements of the bottle drawings or the requirements of this standard,
g) The provisions of the old engine in MT7541997 have been revised [original standard 4.4, this standard 5.2. 43.
5) The material quality and material of the protective ring shall be regulated (5.1.:5 of this standard). This standard was proposed by the Ministry of Science and Technology of the Coal Industry of China. This standard was drafted by the Heavy Fire Branch of the China Coal Research Institute. The main participants of this standard are Long Gongchuan, Gengda Yihua Machinery, etc.
This standard mainly includes the following sections: MT7541S97, MT/T753-1SS71, and the previous versions of the standards replaced by this standard are MT7541S97, MT/T753-1SS71, and the technical conditions for the extraction type axial flow fan for small coal mines M754-2005. The rate indicator standard stipulates the small coal mine surface extraction type track flow ventilation (hereinafter referred to as the inquiry) The product name of the ventilator includes the technical requirements, test supervision rules, signs, packaging, transportation, storage, etc. The technical standards are used for cabinet-type motors to take ventilators. 2 Normative reference documents
The following documents and their clauses shall become the clauses of this standard before they are cited in this standard. All the referenced documents, their titles and all amendments (excluding some errors) are not applicable to this standard. The revisions are based on the parties who reached an agreement on this standard. Whether the latest versions of these documents are used, all the old referenced documents with dates are applicable to the new versions: This standard promotes. Installation and storage diagram
GB11236 Performance test for industrial fans with full-duty air ducts G/1289 Sound test method for fans and installed machines 31316.1 Coal-fired positive air zone frequency electrical equipment Part 1: General requirements CRRA3G, ?
B/T 6398
Electrical apparatus for explosive gas atmospheres Part 2: Type 1 explosive type transport specification Packaging and delivery of parts and components
Industrial product use instructions General
0111 Profit month trap fast release for random selection of labels
(T1381. Coal metal materials·Test methods and designation of safety of flame retardant materials MT113 Test methods and designation of flame retardant materials for use in frozen wells MT 47I
Coal mine soil ventilation fan on-site performance dream effect test Fangda ventilation fan product appearance quality and solution limit
JB/TQ33!
JI5/T6885
J516887
Ventilator installation conditions
Fan exhaust parts technical conditions
IB6688
Machine steel parts technical conditions
IR'T Reag
Wind vibration diagnosis and its limit value
TquanS industrial fan production limit surface
JH fan A fan rotor half balance
Fan welding quality according to the screening technical conditions
JI5/1102:<
Coal Parts Technology
Coal Safety Regulations (2004 Edition)
The following definitions apply to this standard:
A flow cavityFoIsolatingairflru is set in the flow structure of the fan to install the media type single motor so that the cooling airflow of the distribution machine is separated from the air flow in the fan source section:
MT'754—2005
The whole chamber is connected with the air channel.
4 Product name, main structural features and model 4.1 Explosion-proof single-sided extraction axial flow fan for explosive mines 4.1.1 Main features of the ventilation fan: improved performance, strong performance, etc. The motor is installed in the machine flow path, and the air in the machine flow path is completely separated. When communicating with the human body, the motor in the flow cavity must be connected to the air in the new energy air: one motor drives a wheel.
4.1.2 Model and meaning:
Installation rate k ring
Machine number (the fraction of the wheel diameter)
Main ventilation fan
4.2 Coal mine surface anti-coal extraction type counter-rotating axis circulation network fan 4.2.1 Above the installation structure features: The surface fan is powered by a thick two-phase step-mountain peach. The flameproof electric machine is installed with a valve inside the flow channel, and the flow is completely separated from the flow. The flow is connected to the atmosphere with holes to ensure that the engine in the flow cavity runs in fresh air. The core engine is driven or one impeller, and the state is opposite to the Chu rotation. 4.2.2
Installation rate, WY generation variable single-unit effective machine attack | |tt||Machine (impeller diameter in decimeters:
·—Meng Tong machine
Note, can be used E-safe, the machine can be small, bZxz.net
4.3 Explosion-proof extraction type axial flow fan for coal mine surface 4.3.! Main structure characteristics: through, with high-grade sweeping electric machine as the force, the type of electric anti-wave is installed in the isolation chamber, the air flow inside the chamber is completely separated from the air flow inside the fan, there is a hole to sweep the atmosphere to ensure that the exhaust machine in the flow chamber runs in fresh air, the impeller rotates in a circle, "\ greater than the branch 2, 2.3.2 and the meaning:
4.4 Explosion-proof extraction type axial flow fan for coal mine surface Hn
MT 754—2005
Installed power, W represents the impeller efficiency
number (impeller side also divided by * excitation)
main engine
4., 1 rich pregnancy internal special and.The motor of the fan must be installed outside the fan, and a non-explosion-proof electric motor can be used. A single-circuit protection belt is used. The gear transmission must be on the main shaft of the machine. 4.2.2 Model and meaning
5 Technical requirements
5.1 Design and manufacturing requirements
Drive:; Gear transmission: Transmission: Machine power, w
Motor, impeller diameter. Parameters
Main fan
5.1.1 The fan must comply with the drawings and technical documentation approved by the international standards. The whole process of operation must be carried out in accordance with the approved system
5.1.2 The materials and accessories of the fan must comply with the provisions of the industry standards. Self-made parts, outsourced parts should be shipped with qualified parts, and the whole assembly: the same parts of the outsourced parts must be qualified, and the whole assembly acceptance will be completed in a month. 5.1.3 The fan can be installed horizontally. The design of the sliding shell should not be less than 5 points. The number of overhaul points should be more than 5. 5.1.4 The fan is called the number of decimeters of the single diameter, and it is indicated by "". The impeller diameter of the fan is in accordance with Table 1. Table 1 Fan No.
: Impeller nominal diameter
Impeller nominal diameter
MT754—2005
1 Ball point diameter
Table 1 (continued)
Impeller nominal diameter
The structure, size and performance of the fan should comply with the specifications of the product drawings and product specifications. 5. 1.5
5..6 Product warranty instructions or enterprise standards should specify the air and wind efficiency of the ventilator and the user can also list the parameters and wind speed is the typical line (typical record) of the United States. But the following points should not be missing in the economic working area of the city: the static pressure efficiency of the ventilator! The static pressure efficiency of the ventilator is A-level! The sound of the ventilation outlet is A-level. The five wind Kaichengsheng machine is installed on the bottom of the machine shell, that is, the fixed standard on the bottom is generally not less than one.
5.1.B The flow end, frame, impeller, blade, flow chamber, expansion end and other riveted parts of the machine should have sufficient precision. Their manufacturing precision should comply with the requirements of JB/T182:1, and the connection height of the chain should comply with the requirements of JB/13213. 5.1.9 The difference between the new and old parts and the installation difference: 10214. 5.1.10 The impeller shaft of the fan should have a purple call secret device, and the impeller should not be loose when the impeller rotates. 5.1.11 The impeller should be balanced and calibrated. The impeller's energy quality should not exceed 16. 5.1.12 The quality of the fan parts should comply with the provisions of JB/(1%5. 5.1.13 The full list of the fan parts should comply with the provisions of 1B/T588. 5.1.14 The fan should be subjected to the machine operation test. The fan should be operated without any problems. Fans with expansion boxes: The temperature rise of the bearings shall not exceed
5 .1.15 The thickness of the fan protection sheet shall not be less than 2rm1.H. The protection material shall be consistent with the protection material: 5.:1G According to the requirements of the user of the fan, the fan can be equipped with temperature monitoring equipment for components and bearings, bearing flow and carbon exposure facilities. 5.2 Safety requirements
5.2.1 Use a three-stage fan with a motor, and the matching motor should be equipped with B and H33, and the electrical equipment should be inspected and certified with product safety marks. 5.2.2 The fan wheel and the fan should have 5.2.3 The main safety components such as central flow controller, mechanical parts, isolating chain, impeller and radiator are made of non-metallic materials and their anti-flammability and flame retardancy shall meet the requirements of MT11? 1 and obtain the inspection certificate: 5.2.4 The heat insulation of the fan motor is greater than 0.33M2 when the rated voltage is 330V; greater than 1.65M2 when the rated voltage is 660V; greater than 1.44M2 when the rated voltage is 1145V. The cold insulation of the stator winding of the fan motor shall not be greater than 330.5.2 .5 Read the recording input of the electromechanical or machine to the room phase over the rated power of S5%, the blade installation angle can be lake flow green leaves! Shareholder installation angle limit mechanism, 5.2.6:
Suitable fans should have permanent grounding cover and grounding mark: 5.2.71
5.2.6, the rated speed of the fan, the free mountain gas worker sinks down. When the fan is rated, the pressure difference between the fan and the flow into the air space is not less than Pa.
5.3 Quality requirements
5.3.1 The external dimensions and installation quality of the fan shall comply with the thermal specifications of IN/TQ339 and 1/6386, MT 756—2005
5.3.2 The radial distance between the blades of the fan impeller and the engine or the protection should not be less than 5mr.5.3.3 The fan should have a stable aerodynamic performance and its performance curve should be within the operating range without any break. For batch-produced fans, at rated speed and within the operating range, the actual aerodynamic performance curve should be within the specified range and within the performance range specified in the production manual or enterprise standard. The measured static value of the fan should be less than the value of the given performance curve at the same air volume and the given pressure value. The deviation should not exceed the static efficiency given by the fan under the given energy saving condition. , the difference is not big JEK
5.3.4 When the reverse fan is small, the efficiency should be 70% of the ventilation efficiency when the maximum free pressure efficiency is 5%
5.3.5, the extended fan can obviously collect the exhaust gas, and can produce 1A grade air by the line. Its size and commercial static pressure rate "said point noise level should meet the requirements of B/860V standard, A grade 5:5.3.6 When the reverse fan is operated under the condition of mountain gas intake, the power source efficiency should be within the range of 4.6mr85.3.7 The efficiency of the fan when reversing should comply with the provisions of Coal Safety Current 3 (204 Edition) etc. 122 pages: For example, the output should not be less than 40% of the actual supply output. The actual reverse wind room shall not be less than 11mim.6 Acid test method
6.1 5.2:1, 5.2.2, 5.2.3 shall all be checked by the specified ventilation quality method, and the main structure shall be measured by measuring the relative length of the main structure or the steel coil: 6.3 The mechanical operation test shall be carried out for a minimum of 35 minutes, and the bearing moisture rise shall be measured by the actual shaft system source of the bearing system at a value of 20n or less. The bearing shall be fully measured in the case of a recent or scheduled machine. 6.4 The cold insulation resistance of the stator of the motor shall be measured before the power-on test, and the accuracy shall not be lower than Class 0 or above.
6.5 The aerodynamic performance test of the motor shall be carried out by the C conversion method in GB/T1236. The flow rate is measured by a flow meter. When the fan is tested in a coal mine, it should be measured according to the provisions of MT421 standard (B/T2289). A sound level is calculated by the formula. Is-folg(Q.-1s.8
where:
Ls the sound level of the T. washing point. dH
I--the sound level of the work point, A
Q-the wind speed at the said point, rmi
P--the total pressure at the work point, a.
6.7 The ventilation is measured with the value of the daily diversion between the sheet and the optimal or protective diagram. Only when the diversion value is greater than .5mm, it is measured at the rigid point of the circular book cloth and at least 4
6.8 The effective value of the original speed of the fan is measured according to the TT standard. The horizontal verticality of the machine light in the middle of the support of the cat box can be judged.
6.9 The ventilation is controlled by the wheel balance according to the provisions of 3: 3-. 6.10 The static pressure difference between the inside and outside of the isolation flow is 7 Inspection plan
7.1 Inspection classification
1, 1.1 The fan is inspected and tested before delivery. Type inspection, MIT 754—2005
7.1.2 Factory inspection and type inspection shall be carried out in accordance with the items specified in Table 2. 7.2 Factory inspection
7.2.: The mass-produced fans of the manufacturer shall be inspected by the inspection department. After passing the inspection, a certificate of conformity shall be issued and the fans can be shipped out of the factory. 7.2.2 The fans shall be inspected according to the factory inspection schedule listed. 2.3 Among the qualified products produced in batches, each batch of products certified by B/T10111 shall be sampled. No less than 10 products (at least 2 units) shall be sampled and inspected according to the sampling items specified in Table 2. 7.2.4 If one of the products sampled is unqualified, there will still be one unqualified product in the same batch of products sampled. The products should be tested one by one. Table 2 Inspection items for ventilators Additional items Certificates Motor resistance Electric maximum output power K, anhydride, T, example pad Re-pressurization and rotation K. Positive/positive rotation M quantity Radial forward delivery Speed Special efficiency value Medium wheel flat South product Trap pressure business 5. P.1, 5. P. P, 5. 2. 3 5. 1. T.3. 1. 9.3. 1. 9.3. 1. 1c.J. 2. 6.0.2.7.5. 3. 1.5. 1. 1
5, 2, 4
：111
Minor risk items! : In the modified version, the most direct test items are the type inspection items. b. The type inspection shall be conducted after the type inspection and the type qualification shall be completed when the type inspection is conducted or the type inspection is not conducted. The type inspection shall be conducted after the type inspection and the type qualification shall be completed when the type inspection is conducted and the type qualification is completed:
When the next production or the resumption of production after one year
The design, structure, material and technology may have a significant impact on the product performance! d)
The factory inspection results are different from the previous inspection: c2
The State Quality Supervision Department requires the factory to carry out qualified inspection; for mass-produced products, a type inspection is carried out in 2 years. 7.3.2
The fan is connected with the type inspection items listed in the table and then inspected: R
Type inspection method, factory inspection
7.3.3 Sample and judgment:
MT754—2005
For type inspection, generally according to the provisions of B/T311, two samples are selected from the products that pass the factory inspection, one for inspection and the other as a spare sample. It can also be selected according to the sampling plan of the superior or relevant departments. The right is the prototype type inspection. You can send the sample. According to the comprehensive inspection of the local sample, if two of the main inspection items do not meet the requirements or three of the general inspection items do not meet the requirements, the sample should be inspected. If the unqualified inspection items are still unqualified on the same day, the product represented by the sample is judged to be unqualified. 7.3.4 The type inspection and supervision of the machine shall be carried out according to the quality supervision and inspection batch control of the national control authority. After the type inspection and supervision, the machine will be integrated into the production and sales of Li Ke Niu.
8 Marking, packaging, transportation and storage
8.1 Marking
B, 1.1 Each wine blower should have the product nameplate, wheel rotation direction, X flow direction, MA mark, ExdI\ mark and grounding mark fixed in a conspicuous position outside.
8.1.2 Nameplates and various signs shall be made of adhesive materials as stipulated in BT_33: The nameplate must contain the following:
) Fan name and model:
1) Basic technical data of the fan, flow rate, net pressure, rated power, frequency, rated voltage, rated current, rated speed, etc.;
Manufacturer name and trademark:
Shantong fan manufacturing date and production date! Issue number:
The fan brand of the motor in the box has an audible and obvious "Fx\ mark; eF
\1 product safety mark, operating age certificate and operating spark safety certificate number!) Terminal connection method, insulation level, 8.2 Packaging, transportation and storage
The product's shipping icon and transportation package receipt and delivery mark shall be implemented in accordance with the relevant regulations of GH1S1 [1/T53: 8.2.1 The fan can be packed as a whole in other boxes, or it can be packed in different packages or packed or not packed according to the agreement between the supply and demand parties. 8.2.2 When unboxed packaging is used. Fan application case inspection 8.2.4 The product packaging box should have obvious symbols and signs on the outside and inside: a) product name, model, and b) production name or logo:
Overall dimensions:
e) delivery station (port) and delivery list:
1) arrival station (port) and receiving station
2) rainproof and moisture-proof signs.
8.2.5 The overall dimensions and basic dimensions of the packaging box should comply with the regulations of the transportation department. 8.2.6 The structure of the packaging box should be suitable for lifting, long-distance transportation, multiple loading and unloading, climatic conditions, etc. It should also be suitable for water and land transportation, so as not to cause the inner packaging to be damaged, the quality to decline, or the actual parts to be lost. 8.2. Ventilation The storage environment should be well ventilated and free of volatile gases and rain. 7
MT 754—2005
Guarantee period
Within 12 months after delivery or as specified in the order contract or agreement, if the fan is damaged or does not work properly, the manufacturer will be responsible for repairing and replacing seasonal parts for the user.3 The following documents shall be attached to the goods:
Packing list
bi Product qualification list;
| Product receiving instructions (in accordance with GB/T 60.01) 8.2.4 The product packaging box shall have obvious symbols and signs on the outside and inside: a) Product name, model
b) Production name or logo:
Overall dimensions:
e) Delivery station (port) delivery list:
1) Arrival station (port) and receiving list
Rainproof and moisture-proof signs.
8.2.5 The overall dimensions and basic information of the packaging box shall comply with the regulations of the transportation department. 8.2.6 The structure of the packaging box should be suitable for lifting, long-distance transportation, multiple loading and unloading, climatic conditions, etc. It should also be suitable for water and land transportation, so as not to cause the inner packaging to be damaged, the quality to decline, or the actual parts to be lost. 8.2. Ventilation The storage environment should be well ventilated and free of volatile gases and rain. 7
MT 754—2005
Guarantee period
Within 12 months after delivery or as specified in the order contract or agreement, if the fan is damaged or does not work properly, the manufacturer will be responsible for repairing and replacing seasonal parts for the user.3 The following documents shall be attached to the goods:
Packing list
bi Product qualification list;
| Product receiving instructions (in accordance with GB/T 60.01) 8.2.4 The product packaging box shall have obvious symbols and signs on the outside and inside: a) Product name, model
b) Production name or logo:
Overall dimensions:
e) Delivery station (port) delivery list:
1) Arrival station (port) and receiving list
Rainproof and moisture-proof signs.
8.2.5 The overall dimensions and basic information of the packaging box shall comply with the regulations of the transportation department. 8.2.6 The structure of the packaging box should be suitable for lifting, long-distance transportation, multiple loading and unloading, climatic conditions, etc. It should also be suitable for water and land transportation, so as not to cause the inner packaging to be damaged, the quality to decline, or the actual parts to be lost. 8.2. Ventilation The storage environment should be well ventilated and free of volatile gases and rain. 7
MT 754—2005
Guarantee period
Within 12 months after delivery or as specified in the order contract or agreement, if the fan is damaged or does not work properly, the manufacturer will be responsible for repairing and replacing seasonal parts for the user.
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