Submersible motor protector detection device

Abstract

The utility model discloses a submersible motor protector detection device which comprises a rack body, a supporting plate is arranged on the rack body, a turnover shaft is installed at the bottom of the supporting plate, the supporting plate is movably connected with the rack through the turnover shaft, a motor structure is arranged on the side, away from the turnover shaft, of the supporting plate, and an oil injection structure is arranged on the other side of the supporting plate. The utility model relates to the technical field of instrument detection, and the submersible motor protector detection device can simulate the working mode of an underground protector and directly detect whether the protector is qualified or not. The main body buffer hydraulic cylinder is stable in lifting; the structure is compact, the mechanical frame is welded firmly, and working efficiency is improved. A synchronous high-strength hydraulic cylinder is installed on the working table top, and simultaneous stretching and retracting are guaranteed. The motor adopts a variable frequency motor and can adjust the revolution; different revolutions are adopted for control according to different models of the protectors; the coupler is connected with the end part of the motor, and the other end is connected with a tested protector in a workshop. The inspection instrument is special equipment for inspecting products, so that the qualified rate of the products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of instrument detection, in particular to a detection device for a submersible motor protector. Background Art

[0002] The protector is mainly used to protect the submersible motor. The ultimate goal is to prevent well fluid from entering the submersible motor and avoid burning the submersible motor. The protector has the following four main functions in the submersible point pump unit:

[0003] (1) Seal the power output end of the submersible motor shaft to prevent well fluid from entering the submersible motor.

[0004] (2) The oil filling cavity of the protector is connected to the oil well, thereby balancing the pressure difference between the submersible motor and the sealing parts of the protector. When the submersible motor expands due to temperature increase, the lubricating oil can overflow through the protector; when the submersible motor temperature drops due to shutdown, the protector can replenish the lubricating oil to the submersible motor.

[0005] (3) A thrust bearing is installed inside to bear the axial force transmitted from the pump shaft, separator shaft and protector shaft.

[0006] (4) Connect the submersible motor shaft to the pump shaft (or separator shaft), and connect the submersible motor housing to the submersible pump housing (or separator housing).

[0007] The reason is that the submersible motor used in a submersible pump unit is a two-stage, three-phase squirrel-cage asynchronous motor. It is the power source of the submersible pump unit. Submersible motors of varying power and diameter can be selected based on well production, head, temperature, fluid viscosity, and casing specifications.

[0008] Protector inspection devices have always been a bottleneck in China. Domestic manufacturers offer varying models and sizes, and their testing capabilities are incomplete. Therefore, ensuring the quality of the protector is crucial. We developed our own device to verify the protector's quality, requiring it to be used only after passing the test. This protector inspection device was completely designed and developed in-house, encompassing everything from mechanical structure to motor selection and the selection of relevant standard components. Utility Model Content

[0009] In view of the deficiencies in the prior art, the utility model provides a submersible motor protector detection device, thereby effectively improving efficiency, saving costs, and facilitating and simplifying subsequent maintenance.

[0010] To achieve the above objectives, the present invention is implemented through the following technical solutions: a submersible motor protector detection device, comprising a frame body, a support plate provided on the frame body, a flip shaft installed at the bottom of the support plate, the support plate is movably connected to the frame through the flip shaft, a motor structure is provided on the side of the support plate away from the flip shaft, an oil injection structure is provided on the other side of the support plate, a plurality of fixed structures are installed at the bottom of the frame, a supporting structure is installed at one end of the frame close to the motor structure, the supporting structure is in contact with the support plate, a two-way hydraulic cylinder is provided on the frame and between the supporting structure and the flip shaft, the telescopic end of the two-way hydraulic cylinder is movably connected to the support plate, and the lower end of the two-way hydraulic cylinder is movably connected to the frame through a flip hydraulic cylinder bracket.

[0011] Preferably, the motor structure includes a motor, the motor is placed on the support plate, a transmission device is provided at the shaft end of the motor, and the transmission device is connected to the support plate;

[0012] The transmission device includes a shell, which is placed on the support plate. A coupling is installed at the shaft end of the motor and located inside the shell. A protector is installed at the front end of the coupling. A torque meter connected to the support plate is provided on the outer ring surface of the coupling.

[0013] Preferably, the oil injection structure includes a pair of tie-rod hydraulic cylinders arranged on the upper side of the support plate, the tie-rod hydraulic cylinders are connected to the support plate through a tightening cylinder bracket, a tugboat adjustment bracket assembly is installed between the tie-rod hydraulic cylinders and the support plate, a tugboat adjustment bracket assembly is also installed between the telescopic end of the tie-rod hydraulic cylinder and the support plate, oil injection joints are installed on the telescopic ends of the pair of tie-rod hydraulic cylinders, and a reversal plate weldment is installed on the support plate.

[0014] Preferably, the fixing structure includes an anchor bolt, which is placed at the bottom of the frame body. The anchor bolt is connected to the frame body through a hexagonal nut, and an elastic washer and the flat washer are provided between the anchor bolt and the hexagonal nut.

[0015] Preferably, the supporting structure includes a rear baffle, which is fixed to the rear side of the frame body by a plurality of cross head screws. A spring buffer seat is installed on the rear baffle, and the spring buffer seat is in contact with the support plate.

[0016] Preferably, a limit safety component is installed on the frame body to limit the position of the support plate. Beneficial effects

[0017] The utility model provides a submersible motor protector detection device, which has the following beneficial effects: the submersible motor protector detection device can simulate the working mode of the downhole protector and directly detect whether the protector is qualified.

[0018] The main buffer hydraulic cylinder is stable in lifting; the structure is compact and the mechanical frame is firmly welded, which improves work efficiency.

[0019] Synchronous high-strength hydraulic cylinders are installed on the work surface to ensure simultaneous extension and retraction.

[0020] The motor uses a variable frequency motor to adjust the number of revolutions; different numbers of revolutions are used for control according to the model of the protector; the coupling is connected to one end of the motor, and the other end is connected to the protector tested in the workshop.

[0021] Inspection instruments are special equipment for inspecting products to improve the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0024] Figure 3 It is a side structural schematic diagram of the present utility model.

[0025] Figure 4 This is a schematic diagram of the motor structure of the present utility model.

[0026] In the figure: 1. Frame body; 2. Flip plate welding parts; 3. Flip shaft; 4. Tugboat adjustment bracket assembly; 5. Transmission device; 6. Hexagonal nut; 7. Elastic washer; 8. Flat washer; 9. Anchor bolt; 10. Tie rod hydraulic cylinder; 11. Bidirectional hydraulic cylinder; 12. Flip hydraulic cylinder bracket; 13. Cross head screw; 14. Rear baffle; 15. Limit safety component; 16. Clamping cylinder bracket; 17. Spring buffer seat; 18. Oil filling joint; 19. Motor; 20. Torque meter; 21. Coupling; 22. Support plate. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] All electrical components in this case are connected to their corresponding power supplies through wires by personnel in this field, and appropriate controllers should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the working sequence between the electrical components in the following working principle to complete the electrical connection. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control.

[0029] See also Figure 1-4 The utility model provides a technical solution: a submersible motor 19 protector detection device, including a frame body 1, a support plate 22 is provided on the frame body 1, and a turning shaft 3 is installed at the bottom of the support plate 22, and the support plate 22 is movably connected to the frame through the turning shaft 3, and a motor 19 structure is provided on the side of the support plate 22 away from the turning shaft 3, and an oil injection structure is provided on the other side of the support plate 22, and a plurality of fixed structures are installed at the bottom of the frame, and a supporting structure is installed at one end of the frame close to the motor 19 structure, and the supporting structure is in contact with the support plate 22, and a two-way hydraulic cylinder 11 is provided on the frame and between the supporting structure and the turning shaft 3, the telescopic end of the two-way hydraulic cylinder 11 is movably connected to the support plate 22, and the lower end of the two-way hydraulic cylinder 11 is movably connected to the frame through a turning hydraulic cylinder bracket 12.

[0030] Embodiment 1: The motor 19 structure includes a motor 19, which is placed on the support plate 22. The shaft end of the motor 19 is provided with a transmission device 5, and the transmission device 5 is connected to the support plate 22;

[0031] The transmission device 5 includes a shell, which is placed on the support plate 22. A coupling 21 is installed at the shaft end of the motor 19 and located inside the shell. A protector is installed at the front end of the coupling 21. A torque meter 20 connected to the support plate 22 is provided on the outer ring surface of the coupling 21.

[0032] The oil injection structure includes a pair of tie-rod hydraulic cylinders 10 arranged on the upper side of the support plate 22. The tie-rod hydraulic cylinders 10 are connected to the support plate 22 through a tightening cylinder bracket. A tugboat adjustment bracket assembly 4 is installed between the tie-rod hydraulic cylinders 10 and the support plate 22. A tugboat adjustment bracket assembly 4 is also installed between the telescopic end of the tie-rod hydraulic cylinder 10 and the support plate 22. An oil injection joint 18 is installed on the telescopic end of the pair of tie-rod hydraulic cylinders 10. A reversal plate weldment is installed on the support plate 22.

[0033] Specifically, 1. After clicking the hydraulic pump button to start, the hydraulic station starts working (the hydraulic station is small and movable); the hydraulic pump needs to circulate stably for a period of time until it stabilizes and the heat is balanced.

[0034] 2. If you want to lift the protector to a vertical 90°, press and hold the "Lift Start" button.

[0035] The test must be vertical to simulate the downhole conditions and ensure the test accuracy. The field protector is also vertical in the well, so the device adopts the vertical test method;

[0036] 3. If you want to tighten the horizontal hydraulic cylinder, turn the black knob to the right. The hydraulic cylinder will gradually tighten until the hydraulic cylinder is tightened and then turn it back to the left.

[0037] 4. After fully lifted to 90°, the main frame will automatically lock. If you want to unlock and lower it back to 0°, please press and hold the lift start button while pressing the unlock start button. Then release the lift start button and press and hold the lower start button to slowly lower it.

[0038] If you want to release the horizontal hydraulic cylinder, press and hold the release button and the horizontal hydraulic cylinder will slowly release.

[0039] If you need to start the test and start the test motor 19, click the test motor 19 start button, and the motor 19 will start.

[0040] If you need to turn off the test motor 19, click the test motor 19 stop button.

[0041] If oil filling is required, click the oil filling pump start button.

[0042] When the oil filling is finished, click the oil filling pump stop button.

[0043] 5. A frequency converter is installed under the control cabinet, which can manually adjust the motor 19 parameters (limit 2980 rpm - 2990 rpm)

[0044] 6. After the experiment is completed, click Save Report to generate a report in real time, and support manual modification of results.

[0045] Save the experimental data.

[0046] Lower the vertical hydraulic cylinder.

[0047] Retract the horizontal hydraulic cylinder to its shortest position.

[0048] Shut down the hydraulic station, oil cooler, and control console one by one.

[0049] With the submersible motor (19) protector placed on the test rig, the workbench raised vertically, the protector in a vertical position, and the variable frequency motor (19) started, the set parameters were achieved. The torque meter (20 5-100 N·m) measures the protector's parameters, and the protector's compliance is determined by reference to relevant standards. The measured protector parameters are directly displayed on the computer screen, allowing for intuitive visualization of all parameters.

[0050] Embodiment 2: The fixing structure includes an anchor bolt 9, which is placed at the bottom of the frame body 1. The anchor bolt 9 is connected to the frame body 1 through a hexagonal nut 6. An elastic washer 7 and the flat washer 8 are provided between the anchor bolt 9 and the hexagonal nut 6.

[0051] The supporting structure includes a rear baffle 14 , which is fixed to the rear side of the frame body 1 by a plurality of cross head screws 13 . A spring buffer seat 17 is installed on the rear baffle 14 , and the spring buffer seat 17 is in contact with the support plate 22 .

[0052] The frame body 1 is provided with a position limiting safety assembly 15 for limiting the position of the support plate 22 .

[0053] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include," "comprise," or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations. The phrase "includes an element defined by..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0054] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A submersible motor protector detection device, characterized in that: The invention comprises a frame body (1), wherein a support plate (22) is provided on the frame body (1), a tilting shaft (3) is installed at the bottom of the support plate (22), the support plate (22) is movably connected to the frame through the tilting shaft (3), a motor (19) structure is provided on the side of the support plate (22) away from the tilting shaft (3), and an oil injection structure is provided on the other side of the support plate (22), a plurality of fixed structures are installed at the bottom of the frame, a support structure is installed at one end of the frame close to the motor (19), the support structure is in contact with the support plate (22), a bidirectional hydraulic cylinder (11) is provided on the frame and located between the support structure and the tilting shaft (3), the telescopic end of the bidirectional hydraulic cylinder (11) is movably connected to the support plate (22), and the lower end of the bidirectional hydraulic cylinder (11) is movably connected to the frame through a tilting hydraulic cylinder bracket (12).

2. A submersible motor protector detection device according to claim 1, characterized in that The motor (19) structure includes a motor (19), the motor (19) is placed on the support plate (22), a transmission device (5) is provided at the shaft end of the motor (19), and the transmission device (5) is connected to the support plate (22); The transmission device (5) includes a housing, which is placed on the support plate (22). A coupling (21) is installed at the shaft end of the motor (19) and is located in the housing. A protector is installed at the front end of the coupling (21). A torque meter (20) connected to the support plate (22) is provided on the outer ring surface of the coupling (21).

3. A submersible motor protector detection device according to claim 1, characterized in that The oil injection structure includes a pair of tie rod type hydraulic cylinders (10) arranged on the upper side of the support plate (22), the tie rod type hydraulic cylinders (10) are connected to the support plate (22) through a tightening cylinder bracket, a tugboat adjustment bracket assembly (4) is installed between the tie rod type hydraulic cylinders (10) and the support plate (22), and a tugboat adjustment bracket assembly (4) is also installed between the telescopic end of the tie rod type hydraulic cylinder (10) and the support plate (22), an oil injection joint (18) is installed on the telescopic end of the pair of tie rod type hydraulic cylinders (10), and a reversal plate weldment is installed on the support plate (22).

4. A submersible motor protector detection device according to claim 1, characterized in that The fixing structure includes an anchor bolt (9), the anchor bolt (9) is placed at the bottom of the frame body (1), the anchor bolt (9) is connected to the frame body (1) through a hexagonal nut (6), and an elastic washer (7) and a flat washer (8) are provided between the anchor bolt (9) and the hexagonal nut (6).

5. A submersible motor protector detection device according to claim 1, characterized in that The supporting structure includes a rear baffle (14), which is fixed to the rear side of the frame body (1) by a plurality of cross head screws (13), and a spring buffer seat (17) is installed on the rear baffle (14), and the spring buffer seat (17) is in contact with the support plate (22).

6. A submersible motor protector detection device according to claim 1, characterized in that A position limiting safety component (15) is installed on the frame body (1) for limiting the position of the support plate (22).

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