YBK3 explosion-proof motor and YB2, YB3, YBK2 series of differences and advantages
Users in the use of mining explosion-proof motor, generally know that YB series is explosion-proof motor, mining explosion-proof motor series and YB2, YB3, YBK2, YBK3 and other series, customers for the difference between these motors and the connection is not a lot of understanding, today to take you to understand the difference between them in detail.
If the difference and connection between them is first from their respective uses and characteristics:
YB2 explosion-proof motor products
YB2 series flameproof three-phase asynchronous motor is the replacement of YB series, is the basic series of explosion-proof motor. This series of motor has the characteristics of small volume, light weight, beautiful appearance, safe and reliable operation, long life, excellent performance, convenient installation, use and maintenance.
YB2 explosion-proof motor features: the shell is made of cast iron material, which is used in non-mining surface places on mining Wells. The explosion-proof grade is EXDI, and the old level 3 energy efficiency is used.
The advantages are: the product is mature, the stock is sufficient, the price is low.
The disadvantage is: due to high energy consumption, it has now been required by the state to stop production.
B3 explosion-proof motor products
YB3 series is based on YB, YB2 series motor combined with the current domestic and foreign electromagnetic structure, process, materials and other new technologies and successfully developed new products, with high efficiency and energy saving, large temperature rise margin, long life, good performance, low noise, advanced flast-proof structure, high reliability, easy to use and maintenance and other advantages.
YB3 explosion-proof motor features: the shell is made of cast iron material, which is used in non-mining surface places for mining Wells. The explosion-proof grade is: EXDI, and the new level 3 energy efficiency.
The advantages are: the product is mature, the stock is sufficient, the price is low, is the YB2 explosion-proof motor upgrade products.
The disadvantage is that it can not be applied to the underground mining surface, and the smashing resistance is not enough.
YBK2 explosion-proof motor
YBK2 series of explosion-proof three asynchronous motors for underground coal mines are mainly used below the mining face, and are regarded as special motors for mechanical design of underground coal mines. The frame is welded with steel plates, and the wind hood, junction box and insulation structure are strengthened. According to GB3836.2 "Electrical Equipment for Explosive gas environment Part 2 flameproof type" d "", the three asynchronous motors of YBK2 series for underground coal mine are made into flameproof type, and the explosion-proof mark is" Exdl ". It is mainly used in harsh working environment of coal mine. In addition to the special requirements of the frame, air hood and junction box, the rest of the gas performance, installation size and rated power are the same as the YB2 series motor. YBK2 series flameproof three-phase asynchronous motor for underground coal mine is the basic series of flameproof motor for underground coal mine in China, which is newly designed and replaced by YBK series. It has the advantages of high efficiency, large torque, strong overload capacity, low noise, small vibration, large temperature rise margin, good performance, convenient installation and maintenance, long life, etc. The flameproof structure is reasonable, the use is safe and reliable, and the appearance is beautiful.
YBK2 explosion-proof motor features: the shell is made of steel, used in mining underground mining surface sites, explosion-proof grade: EXDI, the old three energy efficiency.
The advantages are: the product is mature, the stock is sufficient, the price is low, it is used for underground mining surface, and the steel shell material has high smashing resistance.
The disadvantage is: due to high energy consumption, it has now been required by the state to stop production.
YBK3 explosion-proof motor products
YBK3 explosion-proof motor is used for coal mine (below the mining face), and the motor's flameproof structure is ExdI Mb. The explosion-proof mark is ExdI Mb, which is suitable for underground mining faces containing gas or coal dust. This series of motors is a squirrel-cage flameproof three-phase asynchronous motor, the shell protection class is IP55, and the cooling mode is IC411 fully enclosed self-fan-cooled. The structure and installation type of the motor are IMB3, IMB5 and IMB35. YBK3 explosion-proof motor is a special motor designed for mining face machinery in coal mine. The frame is welded by steel plate, and the wind hood, junction box and insulation structure are strengthened. It is mainly used for harsh working environment in coal mine.
YBK3 flameproof motor requires that when the explosive mixture inside the motor explodes, the flameproof shell should not be damaged or deformed which affects the flameproof performance; The internal explosive flame is not allowed to cause the explosion of the external explosive mixture through the flameproof joint of the housing, for this reason:
1, the components of the flameproof housing such as frame, end cover, bearing inner cover, junction box cover, junction box seat, etc., after finishing must pass 1.5Mpa, the duration is at least 10S, the test results are not dripping and the shell does not affect the permanent deformation or damage of the explosion-proof type as the static pressure test is qualified;
2, flameproof joint length gap, surface roughness, electrical gap between the exposed conductor inside the junction box, between the exposed conductor and the metal shell and creepage distance see.
3. The bolts connecting the flameproof shell are equipped with spring washers to prevent them from loosening themselves, and the adaptability of the fasteners is greater than or equal to 640Mpa, that is, the mechanical performance level of the fastening bolts is 8.8. For mining products, fasteners that are vulnerable to external impact should also be protected.
4, frame, end cover, bearing inner cover, junction box seat, junction box cover, wiring bolt, terminal sleeve (or patch board), shaft, sealing ring are flameproof parts.
5, in the rated working state, the maximum surface temperature of the motor housing shall not exceed +150℃. The temperature outside the inlet port must not be higher than the allowable temperature of the cable used to ensure reliable operation of the cable.
YBK3 explosion-proof motor features: The shell is made of steel, used in mining underground mining surface sites, explosion-proof grade: EXDI Mb, second-level energy efficiency.
The advantages are: high-efficiency energy-saving explosion-proof motor, second-level energy efficiency, enjoy the national energy-saving subsidy policy, low cost of use.
The disadvantage is: new products, the market demand also needs to warm up, the price is higher than the YBK2 series.
From the above motor knowledge, we can know that YBK3 is the latest energy-saving mine explosion-proof motor, which is used in the mining surface under the mine, and can enjoy national energy saving subsidies, and can completely replace the use of YB2, YB3, YBK2 series explosion-proof motors.
YBK3 explosion-proof motor FAQ
Q: Is YBK3 explosion-proof motor a new type of mine explosion-proof motor?
Answer: Yes, YBK3 explosion-proof motor belongs to a new type of mine explosion-proof motor, which is an upgrade of YBK2 explosion-proof motor.
Q: Is the installation method of YBK3 series flameproof three-phase asynchronous motor used in coal mine the same as that of YBK2 explosion-proof motor?
Yes, YBK3 and YBK2 explosion-proof motor installation is exactly the same.
Q: Is YBK3 explosion-proof motor more energy efficient than YBK2 explosion-proof motor?
A: Performance and stability are superior to YBK2, but also more energy-efficient than it.
Q: Is YBK3 explosion-proof motor expensive?
A: The price of YBK2 explosion-proof motor is the same.
Q: Is there any new change in YBK3 explosion-proof motor model?
A: YBK2 explosion-proof motor is corresponding, details can be downloaded the following documents.
YBK3 explosion-proof motor before installation
YBK3 explosion-proof motor should check whether the packing box is intact before unpacking.
After the YBK3 explosion-proof motor is unpacked, the dust and anti-rust coating of the YBK3 explosion-proof motor should be carefully removed, and the instructions should be read in detail.
YBK3 explosion-proof motor must be inspected before installation, if it does not meet the requirements, it is not allowed to be put into use.
a. explosion-proof mark and explosion-proof certificate number, and consistent with the use of YBK3 explosion-proof motor site requirements;
b. The parts of the flameproof shell are connected correctly and fastened reliably;
c. All flameproof parts should be free of cracks and defects affecting flameproof performance (undismantled new motors may not be inspected);
d. Bearing grease injection and discharge device smooth.
e. The insulation resistance between the stator winding and the housing: not less than 0.38MΩ when the rated voltage is 380V; When the rated voltage is 660V, it is not less than 0.66MΩ, and when the rated voltage is 1140V, it is not less than 1.14MΩ.
YBK3 explosion-proof motor is driven by elastic coupling, and the YBK3 explosion-proof motor should be consistent with the center of the main shaft being driven, otherwise it will cause bearing damage and shaft breakage.
After understanding these, you have a further understanding of the explosion-proof motor YB2, YB3, YBK2, YBK3. I hope these can help you to determine the machine
