CN212850013U - Flame-proof type frequency-conversion speed-regulation three-phase permanent magnet synchronous motor - Google Patents
Flame-proof type frequency-conversion speed-regulation three-phase permanent magnet synchronous motor Download PDFInfo
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- CN212850013U CN212850013U CN202020890721.5U CN202020890721U CN212850013U CN 212850013 U CN212850013 U CN 212850013U CN 202020890721 U CN202020890721 U CN 202020890721U CN 212850013 U CN212850013 U CN 212850013U
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Abstract
A motor shaft is arranged at the transverse center in a shell of the flame-proof type variable-frequency speed-regulating three-phase permanent magnet synchronous motor, a motor coupler is installed at the shaft end of the motor shaft, an oil pump coupler is installed at the shaft end of a mixed transmission pump shaft, and the motor coupler is fixedly connected with the oil pump coupler. The utility model discloses can realize that explosion-proof permanent magnet motor directly links the transmission mode who directly drives with the pump body directly, have following advantage: 1) the motor has more poles, low rotating speed, stepless speed regulation, large output torque, small input power and high efficiency under the condition of low rotating speed work; 2) the failure rate is low, the speed reducer is removed, the mechanical abrasion is reduced, and the failure rate is greatly reduced; 3) the permanent magnet variable frequency motor has a simple structure, the speed reducer and the connector are removed, so that the whole structure is simplified, the stepless speed regulation can be realized by combining the permanent magnet variable frequency motor with the frequency converter, the rotating speed can be adjusted according to the load condition, and the idle work of the motor and the oil pump is reduced.
Description
Technical Field
The utility model relates to the technical field of motors.
Background
The mixed transportation pump is used for conveying the output of an oil well, including multiphase fluids such as liquid phase (oil and water), gas phase (free gas) and solid phase (sand, wax and slag) to a preset position in a pressurized mode. The motor matched with the oil-gas mixed transportation pump in the oil field usually adopts a traditional common explosion-proof motor to drive a speed reducer to be connected with a pump body to finish an oil transportation task, and the motor is connected with the mixed transportation pump through the speed reducer, so that the structure is complex, the efficiency is low, and the fault points are more; and stepless speed regulation cannot be realized.
SUMMERY OF THE UTILITY MODEL
In order to solve the above-mentioned problem that the explosion-proof motor exists for oil gas defeated pump that mixes, the utility model provides a flame-proof type variable frequency speed governing three-phase permanent magnet synchronous motor.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is: the flameproof variable-frequency speed-regulating three-phase permanent magnet synchronous motor comprises a shell, wherein a motor shaft 12 is arranged at the transverse center in the shell, a motor coupler 9 is installed at the shaft end of the motor shaft 12, an oil pump coupler 11 is installed at the shaft end of a mixed transportation pump shaft 13, the motor coupler 9 is fixedly connected with the oil pump coupler 11, a rotor 4 is installed on the outer side of the motor shaft 12, a stator 3 is arranged on the shell, the stator 3 is electrically connected with an explosion-proof junction box 2 located on the outer side of the shell, a vertical end cover 1 in butt joint with a mixed transportation pump shell is arranged at one end of the shell, an end cover 7 is arranged at the other end.
A buffer pad 10 is arranged between the motor coupling 9 and the oil pump coupling 11.
Gaps are arranged between the permanent magnets 5 of the rotor 4.
The permanent magnet 5 is embedded in the silicon steel sheet of the rotor 4, and the magnetic circuit structure is a radial linear structure.
The utility model discloses a flame-proof type variable frequency speed control three-phase permanent magnet synchronous motor can realize that explosion-proof permanent magnet motor directly links the transmission mode who directly drives with the pump body, has following advantage: 1) the motor has more poles, low rotating speed, stepless speed regulation, large output torque, small input power and high efficiency under the condition of low rotating speed work; 2) the failure rate is low, the speed reducer is removed, the mechanical abrasion is reduced, and the failure rate is greatly reduced; 3) the permanent magnet variable frequency motor has a simple structure, the speed reducer and the connector are removed, so that the whole structure is simplified, the stepless speed regulation can be realized by combining the permanent magnet variable frequency motor with the frequency converter, the rotating speed can be adjusted according to the load condition, and the idle work of the motor and the oil pump is reduced.
Drawings
FIG. 1 is the main view section structure diagram of the flame-proof type variable frequency speed-regulating three-phase permanent magnet synchronous motor.
In the figure: 1. the anti-explosion pump comprises a vertical end cover, 2, an anti-explosion junction box, 3, a stator, 4, a rotor, 5, a permanent magnet, 6, a bearing, 7, an end cover, 8, an anti-explosion fan, 9, a motor coupler, 10, a cushion pad, 11, an oil pump coupler, 12, a motor shaft, 13 and a mixed transmission pump shaft.
Detailed Description
The utility model discloses a flame-proof type variable frequency speed control three-phase permanent magnet synchronous motor structure is shown in figure 1, and its mounting form is B35 (vertical, horizontal installation). In the figure, 1 is a vertical flange end cover which realizes the direct butt joint of a motor and a shell of a mixing and conveying pump. And 2, an explosion-proof junction box is a wiring device for conveying power electricity on a motor stator, and the explosion-proof level is divided into dllBT4 and CT 4. And 3, a stator which is composed of a B3 (horizontal) motor shell, silicon steel sheets, electromagnetic wires and the like and is fed into three-phase power electricity to generate a synchronous rotating magnetic field. And 4, the rotor is composed of a silicon steel sheet, a permanent magnet, a rotating shaft and the like, the rotor can do work under the action of a rotating magnetic field, and the rotating shaft is directly butted with the mixed delivery pump shaft to drive the mixed delivery pump to do work. 5 is a permanent magnet, the material of which is rare earth permanent magnet, the brand is N38SH, and the permanent magnet is embedded in the rotor silicon steel sheet. And 6, bearings are used for transmitting power between end covers at two ends and the rotor, and the number of the bearings is 2. And 7 is an end cover. The end cover is supported, and simultaneously, the end cover, the vertical flange end cover, the shell, the rotating shaft, the explosion-proof junction box and the like can jointly complete the explosion-proof function, so that the requirement of the explosion-proof standard is met. 8 is independent explosion-proof cooling blower, provides scattered, cooling for the host computer, guarantees that the host computer normally works. And 9, a motor coupling is directly arranged on an output shaft of the permanent magnet motor to transmit power. And 10, a buffer is used for ensuring stable transmission. The 11 is a butt joint coupler for supporting equipment such as an oil pump and the like, and direct connection and direct drive work are realized.
The concrete structure is as follows: the motor shaft 12 is arranged at the transverse center in the casing, the motor shaft coupling 9 is installed at the shaft end of the motor shaft 12, the oil pump coupling 11 is installed at the shaft end of the mixed transportation pump shaft 13, and the motor shaft coupling 9 and the oil pump coupling 11 can be fixed in position through the grooves in the inner sides of the motor shaft coupling and the motor shaft 12 and the protruding keys on the mixed transportation pump shaft 13 and then are fixedly installed through bolts. The motor coupling 9 and the oil pump coupling 11 are fixedly connected through bolts, a cushion pad 10 is arranged between the motor coupling 9 and the oil pump coupling 11, and the cushion pad 10 can be a rubber cushion pad. The rotor 4 is installed on the outer side of the motor shaft 12, the stator 3 is arranged on the outer side of the rotor 4, the stator 3 is fixed on the casing, the stator 3 is electrically connected with the explosion-proof junction box 2 located on the outer side of the casing, the vertical end cover 1 in butt joint with the shell of the mixing and conveying pump is arranged at one end of the casing, the end cover 7 is arranged at the other end of the casing, and the vertical end cover 1 and the end cover 7 are installed on the motor.
The pump body and motor lug connection remove the speed reducer, realize directly driving, reduce the trouble and improve whole efficiency. The motor meets the current needs only when the motor is in low rotating speed and large torque. Rated power: 63KW, rated voltage: 380V, rated frequency: 54.5HZ, rated revolution: 327n/min, torque: 1893n.m, maximum torque: 4738 n.m. Efficiency: 94%, power factor: 0.956, the above technical data are specially designed for the oil and gas oil transfer pump, the whole requirements are completely met, stepless speed regulation can be realized according to the requirements of users, and the method can not be realized by other motors. The efficiency reaches the energy efficiency limit value of a national small and medium-sized three-phase asynchronous motor and the same 2-level value standard of a 6-pole motor with the same specification in the energy efficiency class GB 18613-2012. The power factor is as high as 0.956, which is not comparable. The embedded permanent magnet is selected, the magnetic circuit structure is in a radial shape, the magnetic leakage factor is 1.26, a radius R1.5 gap is added between the permanent magnet and the permanent magnet, the magnetic leakage is reduced, and the efficiency is improved. The whole structure of the motor is designed according to the requirements of different explosion-proof grades, meets the explosion-proof performance of different requirements, and meets the requirements of national explosion-proof standards. The motor is installed in a B35 mode, and the cooling adopts an independent GBL centrifugal explosion-proof fan 8.
Claims (4)
1. The flame-proof type variable frequency speed regulation three-phase permanent magnet synchronous motor is characterized in that: the motor shaft (12) is arranged at the transverse center in the machine shell, the motor shaft coupler (9) is installed at the shaft end of the motor shaft (12), the oil pump coupler (11) is installed at the shaft end of the mixed transmission pump shaft (13), the motor shaft coupler (9) and the oil pump coupler (11) are fixedly connected, the rotor (4) is installed at the outer side of the motor shaft (12), the stator (3) is fixed on the machine shell, the stator (3) is electrically connected with the explosion-proof junction box (2) located at the outer side of the machine shell, one end of the machine shell is provided with the vertical end cover (1) butted with the shell of the mixed transmission pump, the other end of the machine shell is provided with the end cover (7), and the vertical end cover (1) and.
2. The flameproof variable-frequency speed-regulating three-phase permanent magnet synchronous motor according to claim 1, characterized in that: and a buffer pad (10) is arranged between the motor coupling (9) and the oil pump coupling (11).
3. The flameproof variable-frequency speed-regulating three-phase permanent magnet synchronous motor according to claim 1, characterized in that: gaps are arranged between the permanent magnets (5) of the rotor (4).
4. The flameproof variable-frequency speed-regulating three-phase permanent magnet synchronous motor according to claim 1, characterized in that: the permanent magnet (5) is embedded in the silicon steel sheet of the rotor (4), and the magnetic circuit structure is a radial straight structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890721.5U CN212850013U (en) | 2020-05-25 | 2020-05-25 | Flame-proof type frequency-conversion speed-regulation three-phase permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020890721.5U CN212850013U (en) | 2020-05-25 | 2020-05-25 | Flame-proof type frequency-conversion speed-regulation three-phase permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212850013U true CN212850013U (en) | 2021-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020890721.5U Active CN212850013U (en) | 2020-05-25 | 2020-05-25 | Flame-proof type frequency-conversion speed-regulation three-phase permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212850013U (en) |
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2020
- 2020-05-25 CN CN202020890721.5U patent/CN212850013U/en active Active
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