Offshore oil platform power distribution cabinet partial discharge monitoring device

Abstract

The utility model relates to the technical field of partial discharge monitoring equipment, and discloses a partial discharge monitoring device for a power distribution cabinet of an offshore oil platform, which comprises a partial discharge sensor and a fixed seat positioned behind the partial discharge sensor, supporting blocks are in threaded connection with the positions, located at the upper end and the lower end of the inner side of the fixing base, of the outer portion of the threaded rod, two hinge blocks are symmetrically and fixedly connected to the front surfaces of the supporting blocks, and a hinge rod is rotationally connected between the two hinge blocks; an anti-rotation mechanism is arranged on the left side of the threaded rod on the upper surface of the fixed seat; according to the utility model, the threaded rod is rotated to drive the two supporting blocks to move oppositely or reversely, so that the distance between the partial discharge sensor and a tested device in the offshore oil platform power distribution cabinet is adjusted, and the positioning block in the anti-rotation mechanism is located in one positioning groove, thereby fixing the positioning disc. And when the threaded rod does not need to rotate, the threaded rod cannot rotate due to factors such as mistaken touch and vibration.

Description

Technical Field

[0001] This utility model relates to the field of partial discharge monitoring equipment technology, specifically a partial discharge monitoring device for a power distribution cabinet on an offshore oil platform. Background Technology

[0002] In the process of offshore oil and gas extraction, the power system bears the important responsibility of providing the electricity needed for safe production in offshore oil and gas fields and for the normal life of employees; among them, the distribution cabinet, as a key component of the power system, is directly related to the production efficiency and safety of offshore oil and gas fields.

[0003] Partial discharge is a strong field effect in insulating media. Under the influence of partial discharge, the dielectric will experience aging (electrical aging) and breakdown. In the distribution cabinets of offshore oil platforms, due to harsh environment, equipment aging, improper installation and other reasons, partial discharge may occur in medium and high voltage distribution cabinets. This discharge phenomenon not only leads to accelerated aging of insulating materials, but may also cause equipment failure and even explosions, seriously threatening the production safety and the safety of personnel and property in offshore oil and gas fields. When insulation defects are found inside the distribution cabinet, partial discharge sensors can detect and analyze the partial discharge signal to determine whether there are insulation hazards inside the distribution cabinet, preventing the further escalation of potential accidents.

[0004] Chinese patent discloses a partial discharge online monitoring device for switchgear (authorization announcement number CN220730351U). This patented technology can drive two sets of sliders to move relative to each other through the screw rod shaft. At this time, it can push two sets of connecting rods to extend outward, thereby pushing the partial discharge sensor forward. The movement of the partial discharge sensor can ensure that the distance between it and the measured component can be accurately adjusted, improving installation flexibility and making the monitoring more accurate and reliable. Moreover, the adjustment operation is simple and convenient, and the staff can complete the relevant operations with one hand.

[0005] However, it has certain drawbacks: switch cabinets are usually equipped with electrical devices such as contactors. These devices will constantly engage and disengage during operation, generating vibrations. These vibrations are transmitted to the cabinet, and over time, the threaded rod shaft will rotate unnecessarily due to the vibrations. Furthermore, when staff maintain the equipment inside the cabinet, there is a possibility that they may accidentally touch the threaded rod shaft, causing it to rotate. These rotations will directly cause changes in the angle of the connecting rod, thereby changing the position of the partial discharge sensor and causing it to deviate from the preset optimal measurement point, resulting in inaccurate measurement data. Utility Model Content

[0006] The purpose of this invention is to provide a partial discharge monitoring device for the power distribution cabinet of an offshore oil platform to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A partial discharge monitoring device for a power distribution cabinet on an offshore oil platform includes a partial discharge sensor and a fixed base located behind the sensor. The fixed base has fixing mechanisms on both its left and right surfaces, and a threaded rod is rotatably connected to the lower inner surface of the fixed base. Support blocks are threaded to the upper and lower ends of the threaded rod located on the inner side of the fixed base. Two hinge blocks are symmetrically fixed to the front surface of the support blocks, and a hinge rod is rotatably connected between the two hinge blocks. A hinge seat is rotatably connected to the front end of the hinge rod.

[0009] A positioning plate is fixedly attached to the outside of the threaded rod above the fixed base. Multiple positioning grooves are provided on the outer edge of the upper surface of the positioning plate. An anti-rotation mechanism is provided on the upper surface of the fixed base on the left side of the threaded rod.

[0010] As a further embodiment of this utility model: the fixing mechanism includes a fixing block, and a fixing bolt is movably connected inside the fixing block.

[0011] As a further embodiment of this utility model: the anti-rotation mechanism includes a Z-shaped plate, a pull rod is movably connected through the upper surface of the Z-shaped plate, a pull block is fixedly connected to the lower end of the pull rod, a spring is fixedly connected to the upper surface of the pull block outside the pull rod, and a positioning block is fixedly connected to the lower surface of the pull block.

[0012] As a further embodiment of this utility model: the threaded rod movably passes through the upper end of the fixed base, the support block is slidably connected inside the fixed base, and the front end of the hinged base is fixed to the rear surface of the partial discharge sensor.

[0013] As a further improvement of this utility model, the fixing block is fixed to one side surface of the fixing base.

[0014] As a further embodiment of this utility model: the lower end of the Z-shaped plate is fixed to the upper surface of the fixed base, the upper end of the spring is fixed to the lower surface of the Z-shaped plate, and the positioning block is located inside a positioning groove.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model uses the rotation of the threaded rod to drive two support blocks to move relative to each other or back to back, and adjusts the angle of the hinge rod, thereby driving the partial discharge sensor to move forward or backward, which is used to adjust the distance between the partial discharge sensor and the tested equipment in the power distribution cabinet of the offshore oil platform.

[0017] 2. This utility model has an anti-rotation mechanism. The positioning block in the anti-rotation mechanism is located in a positioning groove, thereby fixing the positioning plate. This prevents the threaded rod from rotating due to accidental contact, vibration or other factors when it does not need to rotate, thus preventing the position of the adjusted partial discharge sensor from changing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a partial discharge monitoring device for a power distribution cabinet on an offshore oil platform.

[0019] Figure 2 A partial exploded view of a partial discharge monitoring device for a power distribution cabinet on an offshore oil platform.

[0020] Figure 3 for Figure 1 Enlarged view of A in the middle;

[0021] Figure 4 A schematic diagram of the anti-spinning mechanism in a partial discharge monitoring device for a power distribution cabinet of an offshore oil platform;

[0022] Figure 5 This is a schematic diagram illustrating the actual use of a partial discharge monitoring device for a power distribution cabinet on an offshore oil platform.

[0023] In the diagram: 1. Partial discharge sensor; 2. Mounting base; 3. Mounting mechanism; 4. Mounting block; 5. Mounting bolt; 6. Threaded rod; 7. Support block; 8. Hinge block; 9. Hinge rod; 10. Hinge seat; 11. Positioning plate; 12. Positioning groove; 13. Anti-rotation mechanism; 14. Z-shaped plate; 15. Pull rod; 16. Pull block; 17. Spring; 18. Positioning block; 19. Offshore oil platform power distribution cabinet. Detailed Implementation

[0024] Please see Figure 1 , Figure 2 and Figure 5 In this embodiment of the utility model, a partial discharge monitoring device for a power distribution cabinet of an offshore oil platform includes a partial discharge sensor 1 and a fixed base 2 located behind the partial discharge sensor 1. Fixed mechanisms 3 are provided on both the left and right surfaces of the fixed base 2. The fixed mechanism 3 includes a fixed block 4, which is fixedly connected to one side surface of the fixed base 2. A fixed bolt 5 is movably connected through the inside of the fixed block 4. A threaded rod 6 is rotatably connected to the lower inner surface of the fixed base 2. The threaded rod 6 movably passes through the upper end of the fixed base 2. Support blocks 7 are threadedly connected to both the upper and lower ends of the threaded rod 6 located on the inner side of the fixed base 2. The support blocks 7 are slidably connected inside the fixed base 2. Two hinge blocks 8 are symmetrically fixed to the front surface of the support blocks 7. A hinge rod 9 is rotatably connected between the two hinge blocks 8. A hinge seat 10 is rotatably connected to the front end of the hinge rod 9. The front end of the hinge seat 10 is fixedly connected to the rear surface of the partial discharge sensor 1.

[0025] The principle of the partial discharge sensor 1 is based on the electric field effect. It detects the partial discharge signal by the change of electric field between the electrode, the dielectric and the insulating dielectric. When an insulation fault occurs inside the power distribution cabinet 19 of the offshore oil platform, the special electrode inside the partial discharge sensor 1 can sensitively capture the change of electric field and convert it into an electrical signal.

[0026] The mounting base 2 is fixed in the power distribution cabinet 19 of the offshore oil platform by the fixing bolt 5;

[0027] The threads of the two support blocks 7 are opposite. That is, when the threaded rod 6 is rotated, the two support blocks 7 will move relative to each other or backward, thereby adjusting the angle of the hinge rod 9, which is used to drive the partial discharge sensor 1 to move forward or backward, and adjust its distance from the device under test in the power distribution cabinet 19 of the offshore oil platform.

[0028] exist Figures 1-4 In the middle: A positioning plate 11 is fixedly connected to the outside of the threaded rod 6 above the fixed base 2. Multiple positioning grooves 12 are opened at the outer edge of the upper surface of the positioning plate 11. An anti-rotation mechanism 13 is set on the upper surface of the fixed base 2 to the left of the threaded rod 6. The anti-rotation mechanism 13 includes a Z-shaped plate 14. The lower end of the Z-shaped plate 14 is fixedly connected to the upper surface of the fixed base 2. A pull rod 15 is movably connected through the upper surface of the Z-shaped plate 14. A pull block 16 is fixedly connected to the lower end of the pull rod 15. A spring 17 is fixedly connected to the upper surface of the pull block 16 outside the pull rod 15. The upper end of the spring 17 is fixedly connected to the lower surface of the Z-shaped plate 14. A positioning block 18 is fixedly connected to the lower surface of the pull block 16. The positioning block 18 is located inside a positioning groove 12.

[0029] Positioning disc 11 is used to follow the rotation of threaded rod 6;

[0030] Multiple positioning slots 12 are evenly distributed;

[0031] The positioning block 18 is used to fix the positioning disk 11 so that the threaded rod 6 will not rotate due to accidental contact, vibration or other factors when it does not need to rotate, thus preventing the position of the adjusted partial discharge sensor 1 from changing.

[0032] The working principle of this utility model is as follows: In use, the partial discharge sensor 1 is fixed inside the offshore oil platform power distribution cabinet 19 by the fixing bolt 5 on the fixing seat 2; after pulling the pull rod 15 upward to move the positioning block 18 out of the positioning groove 12, the threaded rod 6 is rotated to move the two support blocks 7 relative to each other or back to back, adjusting the distance between the partial discharge sensor 1 and the measured equipment inside the offshore oil platform power distribution cabinet 19; after adjustment, the pull rod 15 is released to allow the positioning block 18 to enter the positioning groove 12.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A partial discharge monitoring device for a power distribution cabinet of an offshore oil platform, comprising a partial discharge sensor (1) and a fixed base (2) located behind the partial discharge sensor (1), wherein a fixing mechanism (3) is provided on both the left and right sides of the fixed base (2), and a threaded rod (6) is rotatably connected to the lower inner surface of the fixed base (2), and a support block (7) is threadedly connected to both the upper and lower ends of the threaded rod (6) located on the inner side of the fixed base (2), and two hinge blocks (8) are symmetrically fixed to the front surface of the support block (7), and a hinge rod (9) is rotatably connected between the two hinge blocks (8), and a hinge seat (10) is rotatably connected to the front end of the hinge rod (9); Its features are, A positioning plate (11) is fixedly attached to the outside of the threaded rod (6) above the fixed base (2). Multiple positioning grooves (12) are provided on the outer edge of the upper surface of the positioning plate (11). An anti-rotation mechanism (13) is provided on the upper surface of the fixed base (2) to the left of the threaded rod (6).

2. The partial discharge monitoring device for a power distribution cabinet on an offshore oil platform according to claim 1, characterized in that, The fixing mechanism (3) includes a fixing block (4), and a fixing bolt (5) is movably connected inside the fixing block (4).

3. The partial discharge monitoring device for a power distribution cabinet on an offshore oil platform according to claim 1, characterized in that, The anti-rotation mechanism (13) includes a Z-shaped plate (14), a pull rod (15) is movably connected to the upper surface of the Z-shaped plate (14), a pull block (16) is fixed to the lower end of the pull rod (15), a spring (17) is fixed to the upper surface of the pull block (16) outside the pull rod (15), and a positioning block (18) is fixed to the lower surface of the pull block (16).

4. The partial discharge monitoring device for a power distribution cabinet on an offshore oil platform according to claim 1, characterized in that, The threaded rod (6) moves through the upper end of the fixed seat (2), the support block (7) is slidably connected inside the fixed seat (2), and the front end of the hinge seat (10) is fixed to the rear surface of the partial discharge sensor (1).

5. A partial discharge monitoring device for a power distribution cabinet on an offshore oil platform according to claim 2, characterized in that, The fixing block (4) is fixed to one side surface of the fixing seat (2).

6. A partial discharge monitoring device for a power distribution cabinet on an offshore oil platform according to claim 3, characterized in that, The lower end of the Z-shaped plate (14) is fixed to the upper surface of the fixed base (2), the upper end of the spring (17) is fixed to the lower surface of the Z-shaped plate (14), and the positioning block (18) is located inside a positioning groove (12).

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