Combined switch cabinet partial discharge detection device

Abstract

The utility model discloses a combined switch cabinet partial discharge detection device which comprises a base, the front side of the base is fixedly connected with a transmission case, the rear side of the base is fixedly connected with an inspection box, the interior of the inspection box is fixedly connected with a transient ground voltage sensor, and a TEV sensor arranged on the transient ground voltage sensor extends out of the inspection box. The beneficial effects of the utility model are that a transient earth voltage sensor connected in the inspection box is better attached to a switch cabinet through a TEV sensor, then a worm is manually rotated, the worm drives the two rack plates to stretch out and draw back, and the TEV sensor is clamped in the rack plates. The rack plate can pull the clamping plate to clamp the switch cabinet, so that the arranged transient ground voltage sensor is fixedly attached to the surface of the switch cabinet through the TEV sensor for detection, the structure is reasonable, disassembly and assembly are convenient, meanwhile, better positioning and attaching detection can be achieved, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of partial discharge detection, in particular to a partial discharge detection device for a combined switch cabinet. Background Technique

[0002] Switchgear is an indispensable device for power lines. By controlling the connection and disconnection of the lines, it aims to protect the lines. Therefore, switch cabinets are widely used in various lines of urban power grids. However, due to defects in manufacturing processes and human factors during transportation and installation, there may be some insulation defects in switchgear, which may lead to partial discharge. If the faults cannot be discovered and eliminated in time, it is very likely to cause major accidents such as large-scale power outages. Therefore, it is necessary to monitor the insulation status of switchgear;

[0003] The utility model with the publication number of CN217787279U discloses a combined partial discharge detection device, which includes a housing and a circuit board fixed inside the housing. A display screen is fixed on the front panel of the housing, and the display screen is electrically connected to the circuit board. Inside the rear panel of the housing, a fixing plate is fixed by bolts. A transient earth voltage sensor, a UHF sensor, and an ultrasonic sensor are installed on the fixing plate. The transient earth voltage sensor, the UHF sensor, and the ultrasonic sensor are all electrically connected to the circuit board. The transient earth voltage sensor, the UHF sensor, and the ultrasonic sensor are respectively arranged opposite to several probe holes on the rear panel. The transient earth voltage sensor is installed on the fixing plate through an elastic seat.

[0004] The transient earth voltage sensor, the UHF sensor, and the ultrasonic sensor used in this detection device need to be attached and installed on the surface of the switch cabinet for detection. However, the installation structure used in this device is single and fixed, which is not convenient for disassembly or adjustment, so there are certain drawbacks. Content of the Utility Model

[0005] To solve the above problems, the utility model provides a partial discharge detection device for a combined switch cabinet, and the utility model is realized through the following technical solutions.

[0006] The partial discharge detection device for a combined switch cabinet includes a base. A transmission box is fixedly connected to the front side of the base, and an inspection box is fixedly connected to the rear side of the base. A transient earth voltage sensor is fixedly connected inside the inspection box, and the TEV sensor provided on the transient earth voltage sensor extends outside the inspection box. Rack plates are movably connected to both sides of the base, and a clamping plate is fixedly connected to one end of each rack plate.

[0007] Furthermore, a limiting notch is formed on the outer surface of the rack plate, and the base is limited and slides inside the limiting notch through a slider provided.

[0008] Further, a rotating rod is rotatably connected between the base and the transmission box. One end of the rotating rod is fixedly connected with a worm gear, and the other end of the rotating rod is fixedly connected with a gear.

[0009] Further, a worm is connected through the outer surface of the transmission box, and the worm is meshed with the worm gear. Both ends of the worm are fixedly connected with rotating knobs.

[0010] Further, the gear is located between two rack plates, and the rack plates are meshed with the gear.

[0011] Further, the two clamping plates are parallel to each other, and rubber pads are bonded to the opposite sides of the two clamping plates.

[0012] Further, sliding rods are fixedly connected to both ends inside the inspection box. One end of the sliding rod is movably connected with a mounting plate, and a spring is sleeved on the other end of the sliding rod. The transient earth voltage sensor is fixedly connected to the top of the mounting plate.

[0013] Further, the transient earth voltage sensor is movably connected with the inspection box, and the TEV sensor provided on the transient earth voltage sensor extends out of the inside of the inspection box.

[0014] The beneficial effect of the present utility model is that during the working process of the device, the transient earth voltage sensor connected inside the inspection box is better attached to the switch cabinet through the TEV sensor. Then, manually rotate the worm to drive the two rack plates to expand and contract. The rack plates can pull the clamping plates to clamp the switch cabinet, so that the set transient earth voltage sensor is fixedly attached to the surface of the switch cabinet through the TEV sensor for detection. The structure is reasonable, easy to disassemble and assemble, and can better position and fit for detection, which is convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the following description of the specific embodiments will be briefly introduced. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 : Structural schematic diagram of the combined switch cabinet partial discharge detection device of the present utility model;

[0017] Figure 2 : Top view of the present utility model;

[0018] Figure 3 : Connection schematic diagram of the rotating rod and the rack plate of the present utility model;

[0019] Figure 4:Internal schematic diagram of the inspection box of the present utility model.

[0020] The reference numerals are as follows:

[0021] 1. Base; 11. Rack plate; 111. Limit notch; 12. Clamping plate; 121. Rubber pad;

[0022] 2. Transmission box; 21. Worm;

[0023] 3. Inspection box; 31. Slide bar; 311. Mounting plate; 312. Spring;

[0024] 4. Transient earth voltage sensor;

[0025] 5. Rotating rod; 51. Worm gear; 52. Gear. Detailed implementation manners

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0027] As Figures 1-4 shown, the present utility model has the following specific embodiments.

[0028] Embodiment:

[0029] The combined switchgear partial discharge detection device includes a base 1. A transmission box 2 is fixedly connected to the front side of the base 1. An inspection box 3 is fixedly connected to the rear side of the base 1. A transient earth voltage sensor 4 is fixedly connected inside the inspection box 3, and the TEV sensor provided on the transient earth voltage sensor 4 extends outside the inspection box 3. Rack plates 11 are movably connected to both sides of the base 1, and a clamping plate 12 is fixedly connected to one end of each rack plate 11.

[0030] By adopting the above technical solution, when using the device, first hold the base 1 by hand and fit the connected inspection box 3 onto the surface of the switchgear. At the same time, apply pressure to the base 1 so that the transient earth voltage sensor 4 connected inside the inspection box 3 can better fit onto the switchgear through the TEV sensor. Then, manually rotate the worm 21 to drive the two rack plates 11 to expand and contract. The rack plates 11 can pull the clamping plates 12 to clamp the switchgear, so that the provided transient earth voltage sensor 4 is fixedly attached to the surface of the switchgear through the TEV sensor for detection. The structure is reasonable, convenient for disassembly and assembly, and can better position and fit for detection, facilitating use.

[0031] Specifically, a limiting notch 111 is formed on the outer surface of the rack plate 11, and the base 1 is limited and slid inside the limiting notch 111 through the provided sliding block.

[0032] A rotating rod 5 is rotatably connected between the base 1 and the transmission box 2. One end of the rotating rod 5 is fixedly connected with a worm gear 51, and the other end of the rotating rod 5 is fixedly connected with a gear 52.

[0033] The outer surface of the transmission box 2 is penetrated and connected with a worm 21, and the worm 21 is meshed with the worm gear 51. Both ends of the worm 21 are fixedly connected with rotating knobs.

[0034] The gear 52 is located between the two rack plates 11, and the rack plates 11 are meshed with the gear 52.

[0035] The two clamping plates 12 are parallel to each other, and rubber pads 121 are bonded to the opposite sides of the two clamping plates 12.

[0036] By adopting the above technical solutions, it is convenient to dock, install or disassemble the device with the switch cabinet to be detected. That is, by rotating the worm 21, the meshed worm gear 51 can be driven to rotate. The worm gear 51 can drive the rotating rod 5 to rotate on the base 1. The rotating rod 5 can drive the connected gear 52 to rotate. The gear 52 can drive the two mutually meshed rack plates 11 to expand and contract on both sides of the base 1, so that the two rack plates 11 respectively pull the two clamping plates 12 to displace, so that the two clamping plates 12 clamp the switch cabinet, and the inspection box 3 connected to the base 1 can be attached to the switch cabinet for detection. On the contrary, it is convenient to remove the inspection box 3 from the switch cabinet. Among them, the sliding block provided on the base 1 can be limited and slid inside the limiting notch 111 formed on the rack plate 11, so as to facilitate the limiting expansion and contraction of the rack plate 11.

[0037] Specifically, sliding rods 31 are fixedly connected to both ends inside the inspection box 3. One end of the sliding rod 31 is movably connected with a mounting plate 311, and a spring 312 is sleeved on the other end of the sliding rod 31. The transient earth voltage sensor 4 is fixedly connected to the top of the mounting plate 311.

[0038] The transient earth voltage sensor 4 is movably connected with the inspection box 3, and the TEV sensor provided on the transient earth voltage sensor 4 extends out of the inside of the inspection box 3.

[0039] By adopting the above technical solution, the sliding rod 31 fixedly connected inside the inspection box 3 can limit the lifting of the mounting plate 311. At the same time, the spring 312 connected to the mounting plate 311 is sleeved on the sliding rod 31. Since the transient earth voltage sensor 4 is fixed on the top of the mounting plate 311, the TEV sensor on the transient earth voltage sensor 4 passes through the bottom of the inspection box 3. Therefore, when the TEV sensor on the transient earth voltage sensor 4 is pressed, it can drive the mounting plate 311 to rise, and the mounting plate 311 can squeeze the spring 312. After the spring 312 is compressed, it can generate a reaction force, thereby applying a downward force to the mounting plate 311. The mounting plate 311 drives the connected transient earth voltage sensor 4 to fit on the surface of the switch cabinet through the TEV sensor, which is convenient for the TEV sensor to better fit the cabinet body for detection.

[0040] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principle and practical application of the present invention, so that those skilled in the relevant technical field can understand and utilize the present invention well. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A combined switch cabinet partial discharge detection device, comprising a base (1), characterized in that: The front side of the base (1) is fixedly connected to a transmission box (2), the rear side of the base (1) is fixedly connected to an inspection box (3), the interior of the inspection box (3) is fixedly connected to a transient ground voltage sensor (4), and a TEV sensor arranged on the transient ground voltage sensor (4) extends out of the inspection box (3), both sides of the base (1) are movably connected to rack plates (11), and one end of the rack plate (11) is fixedly connected to a clamping plate (12).

2. The combined switch cabinet partial discharge detection device according to claim 1, characterized in that: The outer surface of the rack plate (11) is provided with a limiting slot (111), and the base (1) is limitedly slidable inside the limiting slot (111) by a sliding block.

3. The combined switch cabinet partial discharge detection device according to claim 1, characterized in that: A rotating rod (5) is rotatably connected between the base (1) and the transmission box (2); one end of the rotating rod (5) is fixedly connected to a worm gear (51); and the other end of the rotating rod (5) is fixedly connected to a gear (52).

4. The combined switch cabinet partial discharge detection device according to claim 3 is characterized in that: A worm (21) is connected through the outer surface of the transmission box (2), and the worm (21) is meshingly connected with the worm wheel (51), and both ends of the worm (21) are fixedly connected with a rotating knob.

5. The combined switch cabinet partial discharge detection device according to claim 4, characterized in that: The gear (52) is located between the two rack plates (11), and the rack plates (11) are meshingly connected with the gear (52).

6. The combined switch cabinet partial discharge detection device according to claim 1, characterized in that: The two clamping plates (12) are parallel to each other, and rubber pads (121) are bonded to opposite sides of the two clamping plates (12).

7. The combined switch cabinet partial discharge detection device according to claim 1, characterized in that: Both ends of the inspection box (3) are fixedly connected to a slide bar (31), one end of the slide bar (31) is movably connected to a mounting plate (311), and the other end of the slide bar (31) is sleeved with a spring (312), and the transient voltage sensor (4) is fixedly connected to the top of the mounting plate (311).

8. The combined switch cabinet partial discharge detection device according to claim 1, characterized in that: The transient voltage sensor (4) is movably connected to the inspection box (3), and the TEV sensor arranged on the transient voltage sensor (4) extends out of the interior of the inspection box (3).

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