CN219432046U - Screw pump ground driving device with uniformly distributed motor circumferences and built-in square clamps - Google Patents

Abstract

The utility model relates to a screw pump ground driving device with uniformly distributed built-in square clamps on the circumference of a motor, which comprises a motor, a sucker rod, a gear box, a bearing shell, a blowout preventer and a control cabinet; at least two motors are fixed on the gear box and symmetrically arranged around the sucker rod, and the motors drive the hollow main shaft to rotate through the gear box; be equipped with a main converter and a plurality of slave frequency converter in the switch board, and the total number of main converter and slave frequency converter is the same with the quantity of motor, and every motor is connected with corresponding main frequency converter, still is equipped with synchronous manager in the switch board, and a main converter and a plurality of slave frequency converters all are connected to synchronous manager. The utility model can obtain ideal large torque output, and can ensure that the central position of the whole driving device is reserved for the structures such as the sealing device, the coupler, the square clamp and the like after being vacated, thus the internal parts are surrounded by the motor, and the damage to people after the internal square clamp and other parts are thrown out due to accidents can be prevented.

Description

Screw pump ground driving device with uniformly distributed motor circumferences and built-in square clamps

Technical Field

The utility model relates to the technical field of screw pump lifting, in particular to a screw pump ground driving device with uniformly distributed motor circumferences and built-in square clamps.

Background

At present, in the common lifting device of oil pumping equipment in an oil field, the screw pump is one of the modes, and is increasingly widely used due to the advantages of small ground driving structure, small occupied area, convenience in maintenance, strong adaptability and the like. The ground driving device of the screw pump is divided into a belt type common driving device and a permanent magnet synchronous direct driving device, the belt type common driving device is limited in application prospect due to various defects (such as easy failure of a braking mode or no active torque release function or broken belt pulley and stall) of the belt type common driving device, the direct driving motor is slightly heavier than the common driving device, but the defects of the belt type common driving device can be well solved, but the belt type common driving device and the direct driving device still have extremely high safety problems, and as the sealing device, the coupling and the square clamp are mainly arranged at the top of the driving device, the risk that the square clamp flies to hurt people even due to stall caused by bending of a polished rod or control failure exists.

The patent number ZL2018201756927, the patent name is "a double motor self-balancing screw pump driving device", the Chinese patent discloses a double motor self-balancing screw pump driving device, in this technical scheme, though use the symmetrical overall arrangement of double motor to make the whole device focus still be in the center of gravity upwards, compare ordinary drive focus in the side has improved by a wide margin, the dual motor drive can increase the output torque simultaneously, but this kind of simple two belt ordinary drives of integrating into a device, its problem that exists is the same with conventional ordinary drive arrangement, belt transmission still has transmission efficiency and safe problem, especially still unresolved square checkpost causes the lost and flies injury people because of special reason.

Disclosure of Invention

In order to solve the technical problems, the utility model aims to provide a screw pump ground driving device with square clamps uniformly distributed on the circumference of a motor, and the safety and the efficiency of the driving device are greatly improved.

In order to achieve the above object, the present utility model adopts the following technical scheme:

a screw pump ground driving device with uniformly distributed built-in square clamps on the circumference of a motor comprises a motor, a sucker rod, a gear box, a bearing shell, a blowout preventer and a control cabinet; the gear box, the bearing shell and the blowout preventer are sequentially fixed on the ground from top to bottom, the sucker rod penetrates through the gear box, the bearing shell and the blowout preventer, a hollow main shaft is sleeved outside the sucker rod, the lower end of the hollow main shaft is arranged in the bearing shell through the bearing, the upper end of the hollow main shaft penetrates through the gear box and then is connected with the sucker rod through a coupler and a square clip, and the lower end of the sucker rod stretches into the ground to be connected with a screw pump body; at least two motors are fixed on the gear box and symmetrically arranged around the sucker rod, and the motors drive the hollow main shaft to rotate through the gear box; the control cabinet is arranged on one side of the gear box, a main frequency converter and a plurality of auxiliary frequency converters are arranged in the control cabinet, the total number of the main frequency converters and the auxiliary frequency converters is the same as the number of motors, each motor is connected with the corresponding main frequency converter or auxiliary frequency converter, a synchronous manager is further arranged in the control cabinet, and the main frequency converter and the plurality of auxiliary frequency converters are connected to the synchronous manager, so that the main frequency converter and the plurality of auxiliary frequency converters can synchronously operate, or the corresponding motors can be independently controlled to operate.

As a preferable scheme: the gear box upper portion still is equipped with the protection installation section of thick bamboo, and a plurality of motors and sucker rod upper portion, square checkpost, shaft coupling all set up in the protection installation section of thick bamboo, and still are equipped with the access panel on the protection installation section of thick bamboo.

As a preferable scheme: the side wall of the protection installation cylinder is provided with an access hole, the access hole is covered by the access plate, one side of the access plate is hinged with one side of the access hole, and the other side of the access plate is detachably fixed with the other side of the access hole through a screw.

As a preferable scheme: and a plurality of through holes for observation are also formed in the access panel.

As a preferable scheme: one or more hanging rings convenient to hoist are further fixed on the upper portion of the protective installation cylinder.

As a preferable scheme: the number of the motors is three or four, and the three or four motors are connected to the control cabinet through a multi-motor integrated junction box arranged on the side wall of the protection installation cylinder.

As a preferable scheme: the number of the motors is two, the motors comprise a permanent magnet synchronous motor A and a magnetic synchronous motor B, and the permanent magnet synchronous motor A and the magnetic synchronous motor B are connected to the control cabinet through a motor junction box A and a motor junction box B respectively.

As a preferable scheme: the output shaft of the motor is inserted into the gear box, a pinion is arranged on the output shaft, a large gear is further arranged on the part, located in the gear box, of the hollow main shaft, and the motor drives the hollow main shaft to rotate through meshing of the large gear and the pinion.

As a preferable scheme: and a sealing pipe is arranged between the hollow main shaft and the sucker rod.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, through the motor structure with equal circumference and the gear reduction mode, ideal large torque output can be obtained, the overall cost can be controlled reasonably, and the center position of the whole driving device is left out and reserved for the structures such as the sealing device, the coupler, the square clamp and the like, so that the internal parts are surrounded by the motor, and the damage to people after the internal square clamp and other parts are thrown out due to accidents can be prevented.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not limit the application.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

fig. 2 is a schematic top view of the present utility model (without the control cabinet).

Fig. 3 is a schematic structural view of the protective mounting cylinder of the present utility model (access panel closed state);

fig. 4 is a schematic structural view of the protective mounting cylinder of the present utility model (an access panel open state);

FIG. 5 is a schematic cross-sectional view of the components of the protective mounting cartridge, gearbox, load bearing housing, etc. of the present utility model;

fig. 6 is a schematic top view of the motor of the present utility model (without a control cabinet);

fig. 7 is a schematic top view of the motor of the present utility model (without a control cabinet);

fig. 8 is a schematic side view of the motor of the present utility model (without a control cabinet) when the number of motors is three or four.

The reference numerals are: 10. a pinion gear; 11. a large gear; 12. a gear box; 13. a load bearing housing; 14. a load bearing; 15. sealing the tube; 16. a sucker rod; 17. a blowout preventer; 18. a screw pump body; 19. An access panel; 20. a control cabinet; 21. a synchronization manager; 22. a main frequency converter; 23. a slave frequency converter; 30. a protective mounting cylinder; 31. a hanging ring; 51. a motor junction box A; 52. a motor junction box B; 60. multiple motor integrated junction box; 61. a permanent magnet synchronous motor A; 62. a permanent magnet synchronous motor B; 7. a square clip; 8. a coupling; 9. a hollow main shaft.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

Furthermore, in the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

the ground driving device of the screw pump, as shown in figures 1, 2 and 5, comprises a motor, a sucker rod 16, a gear box 12, a bearing shell 13, a blowout preventer 17 and a control cabinet 20, wherein square clamps are uniformly distributed on the circumference of the motor; the gear box 12, the bearing shell 13 and the blowout preventer 17 are sequentially fixed on the ground from top to bottom, the sucker rod 16 penetrates through the gear box 12, the bearing shell 13 and the blowout preventer 17, a hollow main shaft 9 is sleeved outside the sucker rod 16, the lower end of the hollow main shaft 9 is arranged in the bearing shell 13 through a bearing 14, and the upper end of the hollow main shaft 9 penetrates through the gear box 12 and then is connected with the sucker rod 16 through a coupler 8 and a square clip 7. A sealing pipe 15 is further arranged between the hollow main shaft 9 and the sucker rod 16, and the lower end of the sucker rod 16 stretches into the ground to be connected with a screw pump body 18.

In this embodiment, the number of motors is two, including a permanent magnet synchronous motor a61 and a magnetic synchronous motor B62, and the permanent magnet synchronous motor a61 and the magnetic synchronous motor B62 are connected to the control cabinet 20 through a motor junction box a51 and a motor junction box B52, respectively. The permanent magnet synchronous motor A61 and the magnetic synchronous motor B62 are symmetrically arranged around the sucker rod 16, an output shaft of the motor is inserted into the gear box 12, a pinion 10 is arranged on the output shaft, a large gear 11 is further arranged on the part, located in the gear box 12, of the hollow main shaft 9, and the motor drives the hollow main shaft 9 to rotate through meshing of the large gear 11 and the pinion 10.

The control cabinet 20 is arranged on one side of the gear box 12, a main frequency converter 22 and a sub frequency converter 23 are arranged in the control cabinet 20, a permanent magnet synchronous motor A61 and a magnetic synchronous motor B62 are respectively connected with the main frequency converter 22 and the sub frequency converter 23, a synchronous manager 21 is also arranged in the control cabinet 20, the synchronous manager 21 is connected with the main frequency converter 22 and the sub frequency converter 23, and the main frequency converter 22 and the sub frequency converter 23 are enabled to synchronously operate, or corresponding motors are independently controlled to operate.

As shown in fig. 3 and 4, the upper part of the gear box 12 is further provided with a protective mounting cylinder 30, the two motors, the upper part of the sucker rod 16, the square clamp 7 and the coupling 8 are all arranged in the protective mounting cylinder 30, and the protective mounting cylinder 30 is further provided with an access plate 19. The protective mounting cylinder 30 is arranged to cover the upper part of the sucker rod 16, the square clamp 7, the coupler 8 and other parts, so that safety accidents caused by throwing out of parts can be effectively prevented.

The side wall of the protection installation cylinder 30 is provided with an access hole, the access hole is covered by the access plate 19, one side of the access plate 19 is hinged with one side of the access hole, and the other side of the access plate is detachably fixed with the other side of the access hole through a screw. The setting of access panel makes the equipment can make things convenient for the efficient maintenance when breaking down. The access panel 19 is also provided with a plurality of through holes for observation. One or more hanging rings 31 which are convenient to hoist are also fixed on the upper part of the protective mounting cylinder 30.

In other embodiments, the number of motors may be three or four, with three or four motors symmetrically disposed about the sucker rod (as shown in FIGS. 6-8). Three or four motors are each connected to the control cabinet 20 through a multi-motor integrated junction box 60 provided on the side wall of the protective mounting cartridge 30. A master frequency converter, two slave frequency converters or a master frequency converter and three slave frequency converters are also arranged in the corresponding control cabinet 20, and the master frequency converter and the slave frequency converters are connected with the corresponding motors and are connected with the synchronous manager 21, and are uniformly controlled by the synchronous manager 21.

The synchronous controller is adopted to realize synchronous or independent and disconnected control of the rotation of each permanent magnet motor by the plurality of frequency converters, so that the output torque is stable and reliable. The whole driving device is provided with a plurality of frequency converter controls which are mutually independent to operate, and the rest frequency converters can be independently operated when 1 fault occurs, so that the production duration is ensured.

The utility model can easily realize large torque output through gear reduction, and the driving device has compact structure and small external dimension, can effectively reduce the load on the Christmas tree and prolong the service life of the whole machine of the equipment; the performance of higher efficiency can be realized by using permanent magnet motors uniformly distributed on the circumference for high-speed output, and the efficiency after the combination of the permanent magnet motors is close to that of a direct-drive ground device although the efficiency loss of gear reduction exists in the middle of the hollow main shaft which is transmitted to the last hollow main shaft. And the total cost of the permanent magnet motor of the driving source is greatly reduced because the gear wheel is driven by the double-motor or multi-motor high-rotation-speed pinion to transmit torque.

All shaft head parts, including the sealing device, the coupler and the square clip, are placed in a central closed space (a protective mounting cylinder) of the whole driving device, so that the safety is higher, and the square clip cannot fly out of the device even if the square clip is thrown out by accident. And the access panel on the protective mounting cylinder can be temporarily removed when the internal sealing device, the coupler and the square clamp are dismounted, so that an operable space is exposed. The whole driving device is not required to be disassembled and assembled by special equipment such as a crane and the like.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model, and any simple modification, equivalent variation and modification of the above embodiments in light of the technical principles of the utility model may be made within the scope of the present utility model.

Claims (9)

1. The utility model provides a screw pump ground drive device of built-in square card of motor circumference equipartition which characterized in that: comprises a motor, a sucker rod (16), a gear box (12), a bearing shell (13), a blowout preventer (17) and a control cabinet (20); the gear box (12), the bearing shell (13) and the blowout preventer (17) are sequentially fixed on the ground from top to bottom, the sucker rod (16) penetrates through the gear box (12), the bearing shell (13) and the blowout preventer (17), a hollow main shaft (9) is sleeved outside the sucker rod (16), the lower end of the hollow main shaft (9) is arranged in the bearing shell (13) through the bearing (14), the upper end of the hollow main shaft (9) penetrates through the gear box (12) and then is connected with the sucker rod (16) through the coupler (8) and the square clamp (7), and the lower end of the sucker rod (16) stretches into the ground to be connected with the screw pump body (18); at least two motors are fixed on the gear box (12) and symmetrically arranged around the sucker rod (16), and the motors drive the hollow main shaft (9) to rotate through the gear box (12); the control cabinet (20) is arranged on one side of the gear box (12), a main frequency converter (22) and a plurality of auxiliary frequency converters (23) are arranged in the control cabinet (20), the total number of the main frequency converters (22) and the auxiliary frequency converters (23) is the same as the number of motors, each motor is connected with the corresponding main frequency converter (22) or auxiliary frequency converter (23), a synchronous manager (21) is further arranged in the control cabinet (20), and the main frequency converter (22) and the plurality of auxiliary frequency converters (23) are connected to the synchronous manager (21), so that the main frequency converter (22) and the plurality of auxiliary frequency converters (23) can synchronously operate, or the corresponding motors can be independently controlled.

2. The ground driving device for the screw pump with uniformly distributed built-in square clamps on the circumference of the motor according to claim 1, wherein the ground driving device is characterized in that: the gear box (12) upper portion still is equipped with protection installation section of thick bamboo (30), and a plurality of motors and sucker rod (16) upper portion, square checkpost (7), shaft coupling (8) all set up in protection installation section of thick bamboo (30), and still are equipped with access panel (19) on protection installation section of thick bamboo (30).

3. The ground driving device for the screw pump with uniformly distributed built-in square clamps on the circumference of the motor according to claim 2, wherein the ground driving device is characterized in that: the side wall of the protection installation cylinder (30) is provided with an access hole, the access hole is covered by the access plate (19), one side of the access plate (19) is hinged with one side of the access hole, and the other side of the access plate is detachably fixed with the other side of the access hole through a screw.

4. The ground driving device for the screw pump with uniformly distributed built-in square clamps on the circumference of the motor according to claim 2, wherein the ground driving device is characterized in that: the access panel (19) is also provided with a plurality of through holes for observation.

5. The ground driving device for the screw pump with uniformly distributed built-in square clamps on the circumference of the motor according to claim 2, wherein the ground driving device is characterized in that: one or more hanging rings (31) which are convenient to hoist are also fixed on the upper part of the protective mounting cylinder (30).

6. The ground driving device for the screw pump with uniformly distributed built-in square clamps on the circumference of the motor according to claim 2, wherein the ground driving device is characterized in that: the number of the motors is three or four, and the three or four motors are connected to the control cabinet (20) through a multi-motor integrated junction box (60) arranged on the side wall of the protection installation cylinder (30).

7. The ground driving device for the screw pump with uniformly distributed built-in square clamps on the circumference of the motor according to claim 1, wherein the ground driving device is characterized in that: the number of the motors is two, the motors comprise a permanent magnet synchronous motor A (61) and a magnetic synchronous motor B (62), and the permanent magnet synchronous motor A (61) and the magnetic synchronous motor B (62) are connected to the control cabinet (20) through a motor junction box A (51) and a motor junction box B (52) respectively.

8. The ground driving device for the screw pump with uniformly distributed built-in square clamps on the circumference of the motor according to claim 1, wherein the ground driving device is characterized in that: the output shaft of the motor is inserted into the gear box (12), a pinion (10) is arranged on the output shaft, a large gear (11) is further arranged on the part, located in the gear box (12), of the hollow main shaft (9), and the motor drives the hollow main shaft (9) to rotate through meshing of the large gear (11) and the pinion (10).

9. The ground driving device for the screw pump with uniformly distributed built-in square clamps on the circumference of the motor according to claim 1, wherein the ground driving device is characterized in that: a sealing pipe (15) is arranged between the hollow main shaft (9) and the sucker rod (16).