Small-diameter submersible special permanent magnet synchronous motor

Abstract

The utility model belongs to the technical field of permanent magnet motors, and particularly relates to a small-diameter submersible special permanent magnet synchronous motor, which comprises a motor and a connector, the connector is arranged on the outer surface of the motor, and an adjusting device is arranged on the outer surface of the connector. The adjusting device comprises a groove. Through the arrangement of the adjusting device, when the acting groove moves along with the fluted disc, the circular shaft can be stressed to slide on the inner wall of the acting groove, and the clamping plates fixed on the outer surface of the circular shaft are stressed to slide on the inner wall of the groove, so that the shaft is clamped, clamping of different shafts can be realized, and the clamping efficiency is improved. The motor can adapt to shafts of different sizes through the connector, the adjusting effect is achieved, and the problems that the shafts cannot be clamped due to the fact that the clamping plates cannot slide on the inner walls of the grooves, and the motor cannot adapt to the shafts of different sizes through the connector to achieve the adjusting effect are solved.

Description

A small-diameter submersible permanent magnet synchronous motor Technical Field

[0001] This utility model belongs to the field of permanent magnet motor technology, specifically relating to a small-diameter submersible oil-specific permanent magnet synchronous motor. Background Technology

[0002] As oilfield development deepens, the cost of oil and gas exploration and development continues to rise. Small-diameter wells, due to their low drilling costs and the ability to combine conventional drilling techniques, are gradually becoming the development direction for oil companies in deep wells, low-permeability oilfields, small reservoirs, and the redevelopment of old oil wells. Due to limitations in production casing size, the size of the submersible pump (SPP) must be small enough to ensure smooth passage during well running-in. In the later stages of development, older oil wells enter a high water-cut production phase, requiring SPPs with larger displacement capabilities.

[0003] Chinese patent publication number CN 119651977 A discloses a small-diameter high-speed submersible permanent magnet synchronous motor, including a housing; a stator assembly fixed inside the housing, which includes a stator core fixedly connected to the housing and a stator winding embedded therein; a rotor assembly disposed in a cavity and rotatably cooperating with the stator assembly; and a motor head and tailstock respectively fixed to the upper and lower ends of the housing.

[0004] However, the current pipe support with a limiting structure has the following problems: the clamping plate cannot slide on the inner wall of the groove, resulting in the inability to clamp the shaft, and the motor cannot be adapted to shafts of different sizes through the connector to achieve the adjustment effect. Therefore, we propose a small-diameter submersible oil-specific permanent magnet synchronous motor. Summary of the Invention

[0005] The purpose of this invention is to provide a small-diameter submersible permanent magnet synchronous motor that can solve the problems in related technologies where the clamping plate cannot slide on the inner wall of the groove, resulting in the inability to clamp the shaft, and the inability to adapt the motor to shafts of different sizes through the connector to achieve the adjustment effect.

[0006] The specific technical solution adopted by this utility model is as follows:

[0007] A small-diameter submersible permanent magnet synchronous motor includes a motor and a connector. The connector is disposed on the outer surface of the motor, and an adjustment device is provided on the outer surface of the connector. The adjustment device includes a groove formed on the outer surface of the connector. A clamping plate is slidably connected to the inner wall of the groove. A round shaft is fixedly connected to the outer surface of the clamping plate. An annular groove is formed on the circumferential surface of the connector, and a force-bearing rod is slidably connected to the inner wall of the annular groove.

[0008] Preferably, a geared disc is fixedly connected to the outer surface of the force-bearing rod, and an action groove is formed on the outer surface of the geared disc. A force-bearing shaft is fixedly connected to the outer surface of the geared disc. This design is beneficial for the force-bearing shaft to drive the geared disc when it is subjected to force and rotates.

[0009] Preferably, the clamping plate is T-shaped, one end of the clamping plate is arc-shaped, and the number of clamping plates is three, arranged along the circumference of the circumferential array connector. This design is beneficial for the clamping plates to clamp the shaft that needs to be connected to the motor.

[0010] Preferably, the connector has a locking device on its circumferential surface. The locking device includes a fixing plate, which is fixedly connected to the circumferential surface of the connector. A rotating shaft is rotatably connected to the side of the fixing plate, and a locking block is provided on the circumferential surface of the rotating shaft. This design helps the locking block to lock the gear plate.

[0011] Preferably, a sleeve is fixedly connected to the circumferential surface of the rotating shaft, and a torsion spring is fixedly connected to the circumferential surface of the rotating shaft. This design is beneficial to the sleeve being able to drive the locking block to rotate under force.

[0012] Preferably, the locking block is fixedly connected to the circumferential surface of the sleeve, one end of the locking block is set in a tooth shape, and the locking block is located on the toothed disc. This design is beneficial to the locking block being able to return to its original position with the sleeve by the torque of the torsion spring when the force is lost.

[0013] Preferably, the annular groove is located on the movement trajectory of the force-bearing rod, and the circular shaft is slidably connected to the inner wall of the working groove. This design is beneficial to the circular shaft being able to drive the clamping plate to move on the inner wall of the groove when it is under force.

[0014] The technical effects achieved by this utility model are as follows:

[0015] 1. By setting up an adjustment device, this utility model enables the round shaft to slide on the inner wall of the adjustment groove when the working groove moves with the gear plate, and enables the clamping plate fixed on the outer surface of the round shaft to slide on the inner wall of the groove, thereby clamping the shaft. It can also clamp different shafts, so that the motor can adapt to shafts of different sizes through the connector and achieve the adjustment effect.

[0016] 2. By setting a locking device, this utility model ensures that when the gear plate stops moving, the clamping plate has already clamped the shaft. At this time, the locking block loses force and will be reset by the torsion spring fixed on the circumference of the rotating shaft, thereby locking onto the outer surface of the gear plate, causing the gear plate to rotate in reverse, resulting in a reduction in the clamping force of the clamping plate, which plays an auxiliary role in the adjustment device and achieves the locking effect. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the entire utility model;

[0018] Figure 2 is a cross-sectional schematic diagram of the structure of the toothed disc of this utility model;

[0019] Figure 3 is an enlarged schematic diagram of the structure at point A in Figure 2 of this utility model;

[0020] Figure 4 is a three-dimensional schematic diagram of the structure of the card block of this utility model;

[0021] Figure 5 is a three-dimensional enlarged schematic diagram of the structure at point B in Figure 4 of this utility model.

[0022] The image shows:

[0023] 1. Motor; 2. Connector; 3. Adjustment device; 31. Groove; 32. Clamping plate; 33. Round shaft; 34. Annular groove; 35. Force-bearing rod; 36. Gear disc; 37. Working groove; 38. Force-bearing shaft; 4. Locking device; 41. Fixing plate; 42. Rotating shaft; 43. Clamping block; 44. Sleeve; 45. Torsion spring. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0025] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] As shown in Figures 1-3, a small-diameter submersible permanent magnet synchronous motor includes a motor 1 and a connector 2. The connector 2 is disposed on the outer surface of the motor 1, and an adjustment device 3 is disposed on the outer surface of the connector 2. The adjustment device 3 includes a groove 31, which is formed on the outer surface of the connector 2. A clamping plate 32 is slidably connected to the inner wall of the groove 31, and a round shaft 33 is fixedly connected to the outer surface of the clamping plate 32. An annular groove 34 is formed on the circumferential surface of the connector 2, and a force-bearing rod 35 is slidably connected to the inner wall of the annular groove 34.

[0029] A gear 36 is fixedly connected to the outer surface of the force-bearing rod 35. An action groove 37 is opened on the outer surface of the gear 36. A force-bearing shaft 38 is fixedly connected to the outer surface of the gear 36. This design is beneficial to drive the gear 36 when the force-bearing shaft 38 rotates under force.

[0030] The clamping plate 32 is T-shaped, one end of the clamping plate 32 is arc-shaped, and there are three clamping plates 32. They are arranged along the circumferential surface of the circumferential array connector 2. This design is beneficial for the clamping plate 32 to clamp the shaft that needs to be connected to the motor 1.

[0031] Based on the above structure, when the operator needs to use the motor 1, the traditional method of connecting the motor 1 to the shaft cannot adapt to the shaft size. A connector 2 needs to be set on the outer surface of the motor 1, and the connector 2 should be able to adapt to different shaft sizes. When the operator needs to install the shaft, the operator only needs to place the shaft on one end of the connector 2 and rotate the force-bearing shaft 38, so that the gear disk 36 is subjected to force and rotates on the inner wall of the annular groove 34 through the force-bearing rod 35. This forces the action groove 37 to move with the movement of the gear disk 36. When the action groove 37 moves with the gear disk 36, the round shaft 33 is subjected to force and slides on the inner wall of the action groove 37. This causes the clamping plate 32 fixed on the outer surface of the round shaft 33 to be subjected to force and slide on the inner wall of the groove 31, thereby clamping the shaft. This allows for clamping of different shafts, enabling the motor 1 to adapt to shafts of different sizes through the connector 2, thus achieving the adjustment effect.

[0032] As shown in Figures 2-4, a locking device 4 is provided on the circumferential surface of the connector 2. The locking device 4 includes a fixing plate 41, which is fixedly connected to the circumferential surface of the connector 2. A rotating shaft 42 is rotatably connected to the side of the fixing plate 41. A locking block 43 is provided on the circumferential surface of the rotating shaft 42. This design is beneficial for the locking block 43 to lock the gear plate 36.

[0033] A sleeve 44 is fixedly connected to the circumferential surface of the rotating shaft 42, and a torsion spring 45 is fixedly connected to the circumferential surface of the rotating shaft 42. This design is beneficial to the sleeve 44 being able to drive the locking block 43 to rotate under force.

[0034] The locking block 43 is fixedly connected to the circumferential surface of the sleeve 44. One end of the locking block 43 is set in a tooth shape. The locking block 43 is located on the toothed disc 36. This design is beneficial to the locking block 43 being able to return to its original position with the sleeve 44 by the torque of the torsion spring 45 when it loses force.

[0035] The annular groove 34 is located on the movement trajectory of the force-bearing rod 35, and the circular shaft 33 is slidably connected to the inner wall of the action groove 37. This design is beneficial to the circular shaft 33 being able to drive the clamping plate 32 to move on the inner wall of the groove 31 when it is under force.

[0036] According to the above structure, when the clamping plate 32 clamps the shaft, in order to prevent the gear plate 36 from being accidentally touched, which would cause the clamping force of the clamping plate 32 on the shaft to decrease and loosen, when the gear plate 36 is rotated under force, the gear plate 36 and the locking block 43 come into contact with each other, so that the locking block 43 is subjected to force and moves upward in an arc on the circumferential surface of the rotating shaft 42 through the sleeve 44. When the gear plate 36 stops moving, the clamping plate 32 has already clamped the shaft. At this time, the locking block 43 loses force and will be reset by the torsion spring 45 fixed on the circumferential surface of the rotating shaft 42, thereby locking onto the outer surface of the gear plate 36, causing the gear plate 36 to rotate in reverse, which reduces the clamping force of the clamping plate 32, plays an auxiliary role in the adjusting device 3, and achieves the locking effect.

[0037] All technical features in this embodiment can be freely combined according to actual needs.

[0038] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A small-diameter submersible permanent magnet synchronous motor, characterized in that: The device includes a motor (1) and a connector (2). The connector (2) is disposed on the outer surface of the motor (1). An adjustment device (3) is disposed on the outer surface of the connector (2). The adjustment device (3) includes a groove (31). The groove (31) is opened on the outer surface of the connector (2). A clamping plate (32) is slidably connected to the inner wall of the groove (31). A round shaft (33) is fixedly connected to the outer surface of the clamping plate (32). An annular groove (34) is opened on the circumferential surface of the connector (2). A force-bearing rod (35) is slidably connected to the inner wall of the annular groove (34).

2. The small-diameter submersible permanent magnet synchronous motor according to claim 1, characterized in that: A gear disc (36) is fixedly connected to the outer surface of the force-bearing rod (35). An action groove (37) is opened on the outer surface of the gear disc (36). A force-bearing shaft (38) is fixedly connected to the outer surface of the gear disc (36).

3. The small-diameter submersible permanent magnet synchronous motor according to claim 2, characterized in that: The clamp (32) is T-shaped, one end of the clamp (32) is arc-shaped, and the number of clamps (32) is three, along the circumferential surface of the circumferential array connector (2).

4. The small-diameter submersible permanent magnet synchronous motor according to claim 1, characterized in that: The connector (2) is provided with a locking device (4) on its circumferential surface. The locking device (4) includes a fixing plate (41) which is fixedly connected to the circumferential surface of the connector (2). A rotating shaft (42) is rotatably connected to the side of the fixing plate (41), and a locking block (43) is provided on the circumferential surface of the rotating shaft (42).

5. A small-diameter submersible permanent magnet synchronous motor according to claim 4, characterized in that: A sleeve (44) is fixedly connected to the circumferential surface of the rotating shaft (42), and a torsion spring (45) is fixedly connected to the circumferential surface of the rotating shaft (42).

6. A small-diameter submersible permanent magnet synchronous motor according to claim 5, characterized in that: The locking block (43) is fixedly connected to the circumferential surface of the sleeve (44), one end of the locking block (43) is toothed, and the locking block (43) is located on the toothed disc (36).

7. A small-diameter submersible permanent magnet synchronous motor according to claim 1, characterized in that: The annular groove (34) is located on the movement trajectory of the force-bearing rod (35), and the circular shaft (33) is slidably connected to the inner wall of the action groove (37).

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