CN216904573U - Screw pump ground device driven by outer rotor of hub motor - Google Patents
Screw pump ground device driven by outer rotor of hub motor Download PDFInfo
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- CN216904573U CN216904573U CN202220438887.2U CN202220438887U CN216904573U CN 216904573 U CN216904573 U CN 216904573U CN 202220438887 U CN202220438887 U CN 202220438887U CN 216904573 U CN216904573 U CN 216904573U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The screw pump ground device driven by the outer rotor of the hub motor comprises a wellhead device, a sealing box, an anti-reverse device, the hub motor, a square clamp and a polished rod which are sequentially connected; the hub motor comprises a motor rotor, a motor stator, a motor upper end cover and a motor lower end cover, the lower end of the motor stator is fixedly connected with a brake chassis of the anti-reversion device, the motor stator is positioned in the motor rotor, the motor lower end cover is fixedly connected with a brake disc, the motor rotor is respectively connected with the motor lower end cover and the motor upper end cover, and the motor upper end cover is connected with the upper end of the motor stator and the square clamp; the utility model uses the hub motor to replace a power mechanism, a transmission mechanism and an anti-reversion mechanism of the traditional driving device, and the hub motor can be used for directly driving and changing speed at any time to improve the overall efficiency, and the power mechanism, the transmission mechanism and the anti-reversion mechanism are integrated into a whole, so that the structure of the driving device is simplified, and the overall volume and mass are reduced.
Description
Technical Field
The utility model relates to the technical field of screw pump oil production systems, in particular to a screw pump ground device driven by an outer rotor of a hub motor
Background
Compared with other conventional rod oil production equipment and electric submersible centrifugal pumps, the screw pump has greater advantages in the process of producing heavy oil wells, high sand content wells and gas wells. And at present the drive arrangement of most ground drive screw pump oil recovery systems in domestic oil field includes: the device comprises a motor, a reduction gearbox, an anti-reversion mechanism, a sealing system, a wellhead support system, a safety protection system and the like. Thereby leading to a bulky and complex overall drive; secondly, because the belt and the reduction gearbox are used for transmission, on one hand, the rotating speed cannot be adjusted at any time, and on the other hand, the transmission efficiency is low.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a screw pump ground device driven by an outer rotor of an in-wheel motor, the in-wheel motor is used for replacing a traditional power mechanism, a transmission mechanism and an anti-reverse mechanism, the in-wheel motor can be used for directly driving and changing speed at any time so as to improve the overall efficiency, and the power mechanism, the transmission mechanism and the anti-reverse mechanism are integrated into a whole so as to simplify the structure of the driving device and reduce the overall volume and mass.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the screw pump ground device driven by the outer rotor of the hub motor comprises a wellhead device, a sealing box, an anti-reversion device, the hub motor, a square clamp 15 and a polished rod 16;
the wellhead device comprises an oil pipe 1 buried in soil, the upper end of the oil pipe 1 is connected with the lower end of an oil pipe cross 2, the upper end of the oil pipe cross 2 is connected with the lower end of a blowout preventer 3, and the upper end of the blowout preventer 3 is connected with a lower end cover 4 of a sealing box;
the sealing box comprises a sealing box lower end cover 4, a sealing box body 5 and a sealing box upper end cover 6, two ends of the sealing box body 5 are respectively connected with the sealing box lower end cover 4 and the sealing box upper end cover 6, and the sealing box upper end cover 6 is connected with a brake chassis 8 of the anti-reverse device;
the anti-reverse device comprises a brake chassis 8, a brake support 7 and a brake disc 10, wherein the brake support 7 is fixed on the outer side of the brake chassis 8, the brake disc 10 is arranged in a clamping groove in the upper end of the brake support 7, and the brake disc 10 is connected with the hub motor;
the hub motor comprises a motor rotor 13, a motor stator 9, a motor upper end cover 14 and a motor lower end cover 11, the lower end of the motor stator 9 is fixedly connected with the brake chassis 8, the motor stator 9 is positioned inside the motor rotor 13, the motor lower end cover 11 is fixedly connected with the brake disc 10, two ends of the motor rotor 13 are respectively connected with the motor lower end cover 11 and the motor upper end cover 14, and the motor upper end cover 14 is connected with the upper end of the motor stator 9 and a square clamp 15; the lower end of the square clamp 15 is connected with the upper end cover 14 of the motor, the center of the square clamp 15 is fixedly connected with one end of a polish rod 16, and the other end of the polish rod 16 is fixedly connected with a sucker rod in an oil well after being inserted and installed inside the axis of the hub motor stator 9.
A sealing ring seal is arranged at the joint of the upper end of the oil pipe 1 and the lower end of the oil pipe cross 2 and is fixedly connected through a bolt;
the joint of the upper end of the oil pipe cross 2 and the lower end of the blowout preventer 3 is provided with a sealing ring seal and is fixedly connected through a bolt;
a sealing ring is arranged at the joint of the upper end of the blowout preventer 3 and the lower end cover 4 of the sealing box for sealing;
sealing rings are arranged at the joints of the lower end cover 4 of the sealing box, the sealing box body 5 and the upper end cover 6 of the sealing box for sealing;
the motor lower end cover 11, the motor rotor 13 and the motor upper end cover 14 are fixedly connected through bolts, and sealing rings are arranged at the joints for sealing.
The upper end of the blowout preventer 3, the lower end cover 4 of the sealing box and the sealing box body 5 are fixedly connected through bolts;
and the upper end cover 6 of the sealing box is fixedly connected with the brake chassis 8 through bolts.
The brake disc 10 is fixed on the lower end cover 11 of the hub motor through bolt connection, and the brake disc 10 is just positioned between the clamping grooves arranged at the upper end of the brake bracket 7.
And a telescopic electromagnetic brake head is also arranged in the clamping groove of the brake disc 10 arranged at the upper end of the brake support 7, and the brake support 7 is fixedly connected to the circumference of the brake chassis 8 through a bolt.
The motor upper end cover 14 is connected with the square clamp 15 through a mortise and tenon structure.
The lifting ring 12 is arranged on the outer side of the in-wheel motor rotor 13.
The lower end of the hub motor stator 9 is arranged in a hole arranged on the brake chassis 8 and is fixedly connected with the brake chassis through a screw.
And a thrust ball bearing 17 and a tapered roller bearing 18 are respectively arranged at the joint of the hub motor stator 9 and the hub motor lower end cover 11 from bottom to top.
A tapered roller bearing 18 and a thrust ball bearing 17 are respectively arranged at the joint of the hub motor stator 9 and the hub motor upper end cover 14 from bottom to top.
The utility model has the beneficial effects that:
(1) the hub motor is used for driving oil extraction, and a speed change mechanism and a transmission mechanism of the traditional driving device are replaced, so that the structure can be simplified, the efficiency can be improved, and the overall volume and the mass can be reduced.
(2) By utilizing the characteristics of the hub motor, the rotating speed can be adjusted in real time according to the oil well output, and the speed can be adjusted by remote control.
(3) The hub motor outer rotor drive has the characteristic of low speed and large torque, so that the hub motor outer rotor is utilized to drive the screw pump without additionally arranging a speed reducer.
(4) The driving device is provided with a novel anti-reverse device, can automatically release torque, and is simple in structure, safe and reliable.
(5) Compared with other driving devices in the prior art, the hub motor driving device has small vibration and low noise, and is more beneficial to oil well ground fault detection and diagnosis.
Drawings
Figure 1 is a front view of the inventive assembly.
Figure 2 is a cross-sectional view of the inventive assembly.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, the screw pump ground device driven by the outer rotor of the hub motor comprises a wellhead device, a sealing box, an anti-reversion device, the hub motor, a square clamp 15 and a polished rod 16;
the wellhead device comprises an oil pipe 1 buried in soil, the upper end of the oil pipe 1 is connected with the lower end of an oil pipe cross 2, the upper end of the oil pipe cross 2 is connected with the lower end of a blowout preventer 3, and the upper end of the blowout preventer 3 is connected with a lower end cover 4 of a sealing box;
the sealing box comprises a sealing box lower end cover 4, a sealing box body 5 and a sealing box upper end cover 6, two ends of the sealing box body 5 are respectively connected with the sealing box lower end cover 4 and the sealing box upper end cover 6, and the sealing box upper end cover 6 is connected with a brake chassis 8 of the anti-reverse device;
the anti-reverse device comprises a brake chassis 8, a brake support 7 and a brake disc 10, wherein the brake support 7 is fixed on the outer side of the brake chassis 8, the brake disc 10 is arranged in a clamping groove in the upper end of the brake support 7, and the brake disc 10 is connected with the hub motor;
the hub motor comprises a motor rotor 13, a motor stator 9, a motor upper end cover 14 and a motor lower end cover 11, the lower end of the motor stator 9 is fixedly connected with a brake chassis 8, the motor stator 9 is positioned inside the motor rotor 13, an electric wire is connected with a motor stator coil through an opening on the motor stator 9, the motor lower end cover 11 is fixedly connected with a brake disc 10, two ends of the motor rotor 13 are respectively connected with the motor lower end cover 11 and the motor upper end cover 14, and the motor upper end cover 14 is connected with the upper end of the motor stator 9 and a square clamp 15; the lower end of the square clamp 15 is connected with the upper end cover 14 of the motor, the center of the square clamp 15 is fixedly connected with one end of a polish rod 16, and the other end of the polish rod 16 is fixedly connected with a sucker rod in an oil well after being inserted and installed inside the axis of the hub motor stator 9.
And a sealing ring seal is arranged at the joint of the upper end of the oil pipe 1 and the lower end of the oil pipe cross joint 2 and is fixedly connected through a bolt.
And a sealing ring seal is arranged at the joint of the upper end of the oil pipe cross 2 and the lower end of the blowout preventer 3 and is fixedly connected through a bolt.
And a sealing ring is arranged at the joint of the upper end of the blowout preventer 3 and the lower end cover 4 of the sealing box for sealing.
The joints of the lower end cover 4 of the sealing box, the sealing box body 5 and the upper end cover 6 of the sealing box are all provided with sealing rings for sealing.
The upper end of the blowout preventer 3, the lower end cover 4 of the sealing box and the sealing box body 5 are fixedly connected through bolts.
And the upper end cover 6 of the sealing box is fixedly connected with the brake chassis 8 through bolts.
A telescopic electromagnetic brake head is also arranged in the clamping groove for mounting the brake disc 10 at the upper end of the brake bracket 7, and the electromagnetic brake head is externally connected with a lead and electrified to realize the telescopic function of the electromagnetic brake head and play a role in blocking the brake disc 10; and the brake bracket 7 is fixed on the circumference of the brake chassis 8 through 2 bolts.
The brake disc 10 is fixed on the lower end cover 11 of the hub motor through bolt connection, and the brake disc 10 is just positioned at a proper position between clamping grooves arranged at the upper end of the brake bracket 7.
The motor lower end cover 11, the motor rotor 13 and the motor upper end cover 14 are fixedly connected through bolts, and sealing rings are arranged at the joints for sealing.
The motor upper end cover 14 is connected with the square clamp 15 through a mortise and tenon structure.
The hanging ring 12 arranged on the outer side of the in-wheel motor rotor 13 is used for installing and maintaining the in-wheel motor and hoisting the in-wheel motor during well repair operation.
The inside of the axle center of the hub motor stator 9 is provided with a hole, and the polished rod 16 is inserted and installed inside.
The lower end of the hub motor stator 9 is arranged in a hole arranged on the brake chassis 8 and is fixedly connected with the brake chassis through a screw.
Referring to fig. 2, a thrust ball bearing 17 and a tapered roller bearing 18 are respectively installed at the joint of the hub motor stator 9 and the hub motor lower end cover 11 from bottom to top.
A tapered roller bearing 18 and a thrust ball bearing 17 are respectively arranged at the joint of the hub motor stator 9 and the hub motor upper end cover 14 from bottom to top.
The working principle of the utility model is as follows:
when the stator 9 of the hub motor is electrified through an electric wire, the rotor 13 of the hub motor starts to rotate in a positive direction under the action of a magnetic field, the brake disc 10 connected with the lower end cover 11 of the hub motor rotates along with the rotor, the square clamp 15 connected with the upper end cover 14 of the hub motor rotates along with the rotor, the polished rod 16 fixed in the middle of the square clamp 15 starts to rotate in a positive direction, and the polished rod 16 transmits power to the underground screw pump connected with the sucker rod through the sucker rod connected with the polished rod 16 so as to finally transmit the power to the underground screw pump connected with the sucker rod, so that the sucker rod starts to rotate in a positive direction. The well head device on the ground plays the role of fixing and supporting the driving device, the sealing box arranged at the upper end of the well sealer 3 is used for preventing oil in the oil pipe from flowing out along the polished rod, the brake chassis 8 and the brake bracket 7 which are arranged at the upper end of the sealing box are both in a static state, the lower end of the in-wheel motor stator 9 is fixedly connected with the brake chassis 8, on one hand, the in-wheel motor stator keeps static with the brake chassis 8, the sealing box and the well head device, and on the other hand, the in-wheel motor stator 15 and the polished rod 16 are supported to bring pressure.
When the power is suddenly cut off, the sucker rod will rotate in the opposite direction at high speed with the polish rod 16 because the screw pump is running and the sucker rod string accumulates a part of deformation energy, and the difference between the liquid level and the liquid level in the oil pipe. The characteristics that induced current can be generated by the reversal of the hub motor are utilized, the generated current is transmitted to the voltage stabilizer connected through the conducting wire and then is preferentially transmitted to the electromagnetic braking head of the braking bracket 7, and the rest current is consumed through the external resistor. When the brake disc rotates reversely, the electromagnetic brake head arranged at the upper end of the brake bracket 7 can automatically extend and retract under the control of current, and is in frictional contact with the brake disc 10 to different degrees, so that the brake disc 10 can be forced to slowly rotate reversely, and the effect of automatically releasing torque is realized.
Claims (10)
1. A screw pump ground device driven by an outer rotor of an in-wheel motor is characterized by comprising a wellhead device, a sealing box, an anti-reversion device, the in-wheel motor, a square clamp (15) and a polished rod (16);
the wellhead device comprises an oil pipe (1) buried in soil, the upper end of the oil pipe (1) is connected with the lower end of an oil pipe cross joint (2), the upper end of the oil pipe cross joint (2) is connected with the lower end of a blowout preventer (3), and the upper end of the blowout preventer (3) is connected with a lower end cover (4) of a sealing box;
the sealing box comprises a sealing box lower end cover (4), a sealing box body (5) and a sealing box upper end cover (6), two ends of the sealing box body (5) are respectively connected with the sealing box lower end cover (4) and the sealing box upper end cover (6), and the sealing box upper end cover (6) is connected with a brake chassis (8) of the anti-reverse device;
the anti-reverse device comprises a brake chassis (8), a brake support (7) and a brake disc (10), the brake support (7) is fixed on the outer side of the brake chassis (8), the brake disc (10) is arranged in a clamping groove in the upper end of the brake support (7), and the brake disc (10) is connected with the hub motor;
the hub motor comprises a motor rotor (13), a motor stator (9), a motor upper end cover (14) and a motor lower end cover (11), the lower end of the motor stator (9) is fixedly connected with a brake chassis (8), the motor stator (9) is positioned inside the motor rotor (13), the motor lower end cover (11) is fixedly connected with a brake disc (10), two ends of the motor rotor (13) are respectively connected with the motor lower end cover (11) and the motor upper end cover (14), and the motor upper end cover (14) is connected with the upper end of the motor stator (9) and a square clamp (15); the lower end of the square clamp (15) is connected with the upper end cover (14) of the motor, the center of the square clamp (15) is fixedly connected with one end of the polish rod (16), and the other end of the polish rod (16) is fixedly connected with the sucker rod in the oil well after being inserted and installed inside the axis of the hub motor stator (9).
2. The ground device of the screw pump driven by the external rotor of the in-wheel motor according to the claim 1, wherein a sealing ring is arranged at the joint of the upper end of the oil pipe (1) and the lower end of the oil pipe cross joint (2) and is fixedly connected through a bolt;
a sealing ring seal is arranged at the joint of the upper end of the oil pipe cross (2) and the lower end of the blowout preventer (3) and is fixedly connected through a bolt;
a sealing ring is arranged at the joint of the upper end of the blowout preventer (3) and the lower end cover (4) of the sealing box for sealing;
sealing rings are arranged at the joints of the lower end cover (4) of the sealing box, the sealing box body (5) and the upper end cover (6) of the sealing box for sealing;
the motor lower end cover (11), the motor rotor (13) and the motor upper end cover (14) are fixedly connected through bolts, and sealing rings are arranged at the joints for sealing.
3. A screw pump ground device driven by an outer rotor of an in-wheel motor according to claim 1, wherein the upper end of the blowout preventer (3), the lower end cover (4) of the sealing box and the sealing box body (5) are fixedly connected through bolts;
and the upper end cover (6) of the sealing box is fixedly connected with the brake chassis (8) through bolts.
4. A screw pump ground device driven by an outer rotor of an in-wheel motor according to claim 1, characterized in that the brake disc (10) is fixed on a lower end cover (11) of the in-wheel motor through a bolt connection, and the brake disc (10) is just positioned between clamping grooves formed in the upper end of the brake bracket (7).
5. A screw pump ground device driven by an outer rotor of an in-wheel motor according to claim 1, wherein a telescopic electromagnetic brake head is further arranged in a clamping groove for mounting a brake disc 10 at the upper end of the brake bracket (7), and the brake bracket (7) is fixed on the circumference of a brake chassis (8) through bolt connection.
6. A screw pump ground device driven by an outer rotor of an in-wheel motor according to claim 1, wherein the upper end cover (14) of the motor is connected with the square clamp (15) through a mortise and tenon joint structure.
7. A screw pump floor unit driven by an in-wheel motor and an external rotor according to claim 1, wherein the in-wheel motor rotor (13) is provided with a suspension ring (12) at an outer side thereof.
8. A screw pump floor unit with an external rotor drive of an in-wheel motor according to claim 1, characterized in that the lower end of the stator (9) of the in-wheel motor is mounted in a hole arranged on the brake base plate (8) and fixed by screw connection.
9. The ground device of the screw pump driven by the in-wheel motor and the outer rotor is characterized in that a thrust ball bearing (17) and a tapered roller bearing (18) are respectively arranged at the joint of the in-wheel motor stator (9) and the in-wheel motor lower end cover (11) from bottom to top.
10. The ground device of the screw pump driven by the in-wheel motor and the outer rotor is characterized in that a tapered roller bearing (18) and a thrust ball bearing (17) are respectively arranged at the joint of the in-wheel motor stator (9) and an in-wheel motor upper end cover (14) from bottom to top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220438887.2U CN216904573U (en) | 2022-03-01 | 2022-03-01 | Screw pump ground device driven by outer rotor of hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220438887.2U CN216904573U (en) | 2022-03-01 | 2022-03-01 | Screw pump ground device driven by outer rotor of hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216904573U true CN216904573U (en) | 2022-07-05 |
Family
ID=82187669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220438887.2U Active CN216904573U (en) | 2022-03-01 | 2022-03-01 | Screw pump ground device driven by outer rotor of hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216904573U (en) |
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2022
- 2022-03-01 CN CN202220438887.2U patent/CN216904573U/en active Active
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