High-voltage cable partial discharge detection sealing protection device

Abstract

The utility model discloses a high-voltage cable partial discharge detection sealing protection device which comprises a cover picking protection mechanism. The cover-picking protection mechanism comprises an insulating cover-picking plate, and the insulating cover-picking plate is provided with a cover cavity covering the position of the cable detection section. A ram assembly is assembled and connected to the top of the insulating cover picking plate; elastic pressing wheel assemblies for locking and pressing the cable are assembled and connected to the two ends of the cover cap cavity respectively; the elastic pressing wheel assembly comprises an upper elastic pressing wheel and a lower elastic pressing wheel, the upper elastic pressing wheel is hinged to a lever assembly, in the cable locking process, the gap between the upper elastic pressing wheel and the lower elastic pressing wheel is increased through the lever assembly, and then the cable is locked through the upper elastic pressing wheel and the lower elastic pressing wheel. According to the device, in the partial discharge detection process of the high-voltage cable, the insulating cover picking plate is covered by the cover cavity, so that the cable for partial discharge detection is located in a relatively sealed environment, and the safety of the detection process is guaranteed. And meanwhile, the operation safety of detection personnel is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of high - voltage cable partial discharge detection, and particularly relates to a sealed protection device for high - voltage cable partial discharge detection. Background Technique

[0002] A high - voltage cable is a cable used to transmit a relatively high voltage. Its main structure includes an insulating outer layer and a cable core layer located inside the insulating outer layer. During the use of high - voltage cables, it is necessary to regularly inspect the high - voltage cables. Specifically, because the voltage transmitted by high - voltage cables is very high, in order to ensure that the cables work in a safe state, cable faults are detected in a timely manner through inspections to ensure the safe operation of the cables.

[0003] Specifically, during the inspection process, various detections of the cable are often required, such as cable temperature detection and partial discharge detection. Among them, partial discharge detection is particularly important. Specifically, as the service life of the cable increases, when the insulation of the cable insulation layer decreases, the cable is prone to partial discharge. When the voltage of the partial discharge is relatively large, it is easy to break down the cable and injure the working equipment and operators, thereby causing serious power - using accidents.

[0004] The current detection method is to use a partial discharge detector for detection. However, in the actual detection process, when the partial discharge of the high - voltage cable is very serious, without protecting the partial discharge part, the risk of live detection is very high. Specifically, the current of the partial discharge is likely to electrocute the detection personnel during the detection process, and the voltage of the high - voltage cable partial discharge is usually relatively large. Once electrocuted, it is very difficult for the detection personnel to survive the high - voltage electric shock. Therefore, in the actual work process, during the live detection of cables with serious partial discharge, the detector is clamped to the cable through methods such as an insulating pick - rod. However, since the cable part with serious partial discharge is not insulated and protected, there are still serious safety hazards. For example, when an operator accidentally approaches the cable, it is easy to be electrocuted by the partial discharge. Content of the Utility Model

[0005] Based on the above background, the purpose of the utility model is to provide a sealed protection device for high - voltage cable partial discharge detection.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A sealed protection device for high - voltage cable partial discharge detection includes a pick - cover protection mechanism;

[0008] The pick - cover protection mechanism includes an insulating pick - cover plate, and a cover cavity covering the cable detection section is formed on the insulating pick - cover plate;

[0009] A pick - rod assembly is assembled and connected to the top of the insulating pick - cover plate, and the insulating pick - cover plate is covered on the cable through the pick - rod assembly;

[0010] Elastic pressure wheel assemblies for locking and pressing cables are respectively assembled and connected to both ends of the cover cavity;

[0011] The elastic pressure wheel assembly includes an upper elastic pressure wheel and a lower elastic pressure wheel. The upper elastic pressure wheel is hinged with a lever assembly. During the process of locking the cable, the gap between the upper elastic pressure wheel and the lower elastic pressure wheel is increased through the lever assembly, and then the cable is locked by using the upper elastic pressure wheel and the lower elastic pressure wheel.

[0012] Preferably, the longitudinal cross-sectional shape of the insulating pick-up cover plate is U-shaped.

[0013] Preferably, the pick-up rod assembly includes U-shaped hinge seats respectively fixedly connected to the front and rear sides of the top of the insulating pick-up cover plate. A pin shaft is hinged in the U-shaped hinge seat, and a U-shaped connecting rod is fixedly connected between the pin shafts;

[0014] Shrinkable pick-up rods are respectively fixedly connected to the front and rear sides of the U-shaped connecting rod.

[0015] Preferably, the shrinkable pick-up rod includes a sliding rod fixedly connected to the U-shaped connecting rod. The sliding rod is slidably connected with a long pick-up tube, and a handle is fixedly connected to the outer end of the long pick-up tube.

[0016] Preferably, both the upper elastic pressure wheel and the lower elastic pressure wheel include a wheel frame, and an upper elastic wheel and a lower elastic wheel are respectively hinged in the wheel frame.

[0017] Preferably, locking grooves for locking the cable are respectively formed on the upper elastic wheel and the lower elastic wheel.

[0018] Preferably, sliding columns slidably connected to the insulating pick-up cover plate are respectively fixedly connected to the wheel frames, and springs are sleeved on the sliding columns;

[0019] Both ends of the spring are respectively fixedly connected to the wheel frame and the insulating pick-up cover plate.

[0020] Preferably, a retaining cap is fixedly connected to the outer end of the sliding column.

[0021] Preferably, the lever assembly includes a U-shaped pick-up plate hinged to the upper elastic pressure wheel;

[0022] The U-shaped pick-up plate is hinged to the retaining cap, and a lever is fixedly connected to the U-shaped pick-up plate.

[0023] Preferably, a pull rope is fixedly connected to the lower end position of the right side wall of the insulating pick-up cover plate;

[0024] A plurality of detection line through holes are formed in the right side wall of the insulating pick-up cover plate.

[0025] The utility model has the following beneficial effects:

[0026] 1. During the implementation process, the operator picks up the handle with both hands, pulls the sliding rod to extend the long pick-up pipe, and then uses the bolt connected by the thread at the top of the long pick-up pipe to lock it onto the sliding rod to achieve extrusion locking.

[0027] Subsequently, the operator picks up the insulating pick cover plate and covers it over the detected cable part.

[0028] During the actual working process, in order to facilitate the adjustment of the relative posture between the insulating pick cover plate and the cable and ensure that the insulating pick cover plate can be easily covered over the cable in a compliant posture, a pull rope is fixedly connected to the lower end position of the right side wall of the above-mentioned insulating pick cover plate. When the operator pulls the pull rope, at this time, the insulating pick cover plate rotates relative to the pick rod assembly through the pin shaft, thereby facilitating the adjustment of the angular posture and ensuring that the covering cavity is correctly oriented towards the cable. In this way, the insulating pick cover plate is covered on the cable part with serious partial discharge to achieve detection under the protection state. Under the covering of the covering cavity, the cable for partial discharge detection is in a relatively sealed environment, thereby ensuring the safety of the detection process. At the same time, the operation safety of the detection personnel is guaranteed.

[0029] 2. During the implementation process, after aligning the upper elastic wheel and the lower elastic wheel and pushing them against the cable, under the driving force, at this time, the wheel frame elastically slides along with the sliding column through the spring. In this process, the upper elastic wheel and the lower elastic wheel move away from each other until the cable is caught in the locking groove, and then under the elastic recovery of the spring, it remains in the locked state. During this process, the insulating pick cover plate is pushed in cooperation. After the cable is clamped, the cable is also covered. In this way, while locking the cable, the insulating pick cover plate is supported on the cable to maintain protection in a stable state.

[0030] 3. When it is necessary to disengage from the cable during the implementation, the operator presses down the lever until the lever touches the edge of the insulating pick cover plate. Using the edge of the insulating pick cover plate as a fulcrum, the sliding column - retaining cap is lifted upwards. At this time, the upper elastic pressure wheel moves upwards along with the compression process of the spring until the gap increases, facilitating the disengagement of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings.

[0032] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the present invention;

[0033] Figure 2 It is a schematic diagram of the U-shaped hinge seat structure in the embodiment of the present invention;

[0034] Figure 3 Structural schematic diagram of the upper elastic wheel and the lower elastic wheel in the embodiment of the present utility model;

[0035] Figure 4 Planar structural schematic diagram in the embodiment of the present utility model;

[0036] Figure 5 Structural schematic diagram of the lever assembly in the embodiment of the present utility model;

[0037] Figure 6 In the embodiment of the present utility model Figure 1 Structural schematic diagram from another perspective.

[0038] The realization of the purpose, functional characteristics and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0039] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to 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 scope of protection of the present utility model.

[0040] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0041] In addition, the descriptions such as "first" and "second" in the present utility model are only for descriptive purposes, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0042] Embodiment 1

[0043] As Figures 1-6As shown in the figure, a high-voltage cable partial discharge detection sealing and protection device includes a pick-up cover protection mechanism. Specifically, the pick-up cover protection mechanism includes an insulating pick-up cover plate 1 (the longitudinal cross-sectional shape of the insulating pick-up cover plate 1 is U-shaped, and the length is usually designed to be between 1.5 and 2 m). A cover cavity covering the cable detection section is provided on the insulating pick-up cover plate 1.

[0044] During the detection process, the insulating pick-up cover plate 1 is covered on the cable part with serious partial discharge to realize detection under the protection state. Under the cover of the cover cavity, the cable for partial discharge detection is in a relatively sealed environment, thereby ensuring the safety of the detection process.

[0045] In order to conveniently pick up the insulating pick-up cover plate 1 onto the cable and maintain a safe distance between the operator and the cable.

[0046] A pick-up rod assembly (similarly, made of insulating material) is assembled and connected to the top of the above-mentioned insulating pick-up cover plate 1, and the insulating pick-up cover plate 1 is covered on the cable through the pick-up rod assembly.

[0047] Specifically, the pick-up rod assembly includes U-shaped hinge seats 21 respectively fixedly connected to the front and rear sides of the top of the insulating pick-up cover plate 1. A pin shaft is hinged in the U-shaped hinge seat 21, and a U-shaped connecting rod 22 is fixedly connected between the pin shafts; telescopic pick-up rods are respectively fixedly connected to the front and rear sides of the U-shaped connecting rod 22.

[0048] Specifically, the telescopic pick-up rod includes a sliding rod 24 fixedly connected to the U-shaped connecting rod 22. A long pick-up tube 23 is slidably connected to the sliding rod 24, and a handle 231 is fixedly connected to the outer end of the long pick-up tube 23.

[0049] During the working process, the operator picks up the handle 231 with both hands. After pulling the sliding rod 24 to extend the long pick-up tube 23, the bolt threadedly connected to the top of the long pick-up tube 23 is locked to the sliding rod 24 to realize pressing and locking.

[0050] Subsequently, the operator picks up the insulating pick-up cover plate 1 and covers the insulating pick-up cover plate 1 on the cable detection part.

[0051] During the actual working process, in order to conveniently adjust the relative posture between the cover plate of the insulating pick-up cover plate 1 and the cable and ensure that the cover plate of the insulating pick-up cover plate 1 can be conveniently covered on the cable in a fitting posture, a pull rope 5 is fixedly connected to the lower end position of the right side wall of the above-mentioned insulating pick-up cover plate 1. The operator pulls the pull rope. At this time, the cover plate of the insulating pick-up cover plate 1 rotates relative to the pick-up rod assembly through the pin shaft, thereby conveniently adjusting the angular posture to ensure that the cover cavity is correctly oriented towards the cable.

[0052] A plurality of detection line through holes 11 are formed in the right side wall of the above-mentioned insulating pick cover plate 1. Before construction, the operator hangs the detector on the detection equipment on the cable by means of a pick rod in the existing manner, and penetrates the detection data line through the detection line through hole 11 and then connects it to the host computer. Subsequently, under the action of the above-mentioned method, cover protection is achieved.

[0053] Embodiment 2

[0054] As Figures 1-6 shown, on the basis of the structure of Embodiment 1, in order to achieve a relatively high stability of the cover after covering the cable, elastic pressing wheel assemblies 3 (made of the same insulating material) for locking and pressing the cable are respectively assembled and connected at both ends of the cover cavity; one side of the elastic pressing wheel assembly 3 presses one side of the cable.

[0055] Specifically, the elastic pressing wheel assembly includes an upper elastic pressing wheel 33 and a lower elastic pressing wheel 32. The upper elastic pressing wheel 33 is hinged with a lever assembly. During the process of locking the cable, the gap between the upper elastic pressing wheel 33 and the lower elastic pressing wheel 32 is increased through the lever assembly, and then the cable is locked by the upper elastic pressing wheel 33 and the lower elastic pressing wheel 32.

[0056] The specific structures of the upper elastic pressing wheel 33 and the lower elastic pressing wheel 32 are as follows:

[0057] Both the upper elastic pressing wheel 33 and the lower elastic pressing wheel 32 include a wheel frame 31. An upper elastic wheel and a lower elastic wheel (the upper elastic wheel and the lower elastic wheel are made of rubber) are respectively hinged inside the wheel frame 31. Locking grooves A for locking the cable are respectively formed on the upper elastic wheel and the lower elastic wheel.

[0058] Specifically, the wheel frame 31 is assembled to the insulating pick cover plate 1 in an elastic sliding manner. The specific structure is as follows:

[0059] Slide columns 34 that are slidably connected to the insulating pick cover plate 1 are respectively fixedly connected to the wheel frame 31. A spring 35 is sleeved on the slide columns 34; both ends of the spring 35 are respectively fixedly connected to the wheel frame 31 and the insulating pick cover plate 1. At the same time, a retaining cap 341 is fixedly connected to the outer end of the slide column 34.

[0060] During the working process, after aligning the upper elastic wheel and the lower elastic wheel and pushing them against the cable, under the driving force, at this time, the wheel frame 31 elastically slides along with the slide column 34 through the spring 35. During this process, the upper elastic wheel and the lower elastic wheel move away from each other until the cable is caught in the locking groove, and then under the elastic recovery of the spring 35, a locking state is maintained. During this process, the insulating pick cover plate 1 cooperates with the inward push. After the cable is clamped, the cable is also covered.

[0061] After locking, at this time, the insulating pick cover plate 1 completely supports on the cable.

[0062] Embodiment 3

[0063] As Figures 1-6 shown, on the basis of the structure of Embodiment 2, in order to facilitate the detachment of the cable from between the upper elastic wheel and the lower elastic wheel after detection, the above-mentioned lever assembly (made of the same insulating material, such as plastic or rubber material) includes a U-shaped lifting plate 41 hinged on the upper elastic pressing wheel 33. That is, the U-shaped lifting plate 41 is hinged on the retaining cap 341 fixed to the upper end portion of the sliding column 34. The specific method is as follows: The U-shaped lifting plate 41 is hinged on the retaining cap 341 through a pin shaft, and a lever 4 is fixedly connected to the U-shaped lifting plate 41.

[0064] During the process of detaching the cable, the operator presses down the lever until the lever 4 touches the edge of the insulating lifting cover plate 1, and uses the edge of the insulating lifting cover plate 1 as a fulcrum to lift the sliding column 34 - retaining cap 341 upwards. At this time, the upper elastic pressing wheel 33 moves upwards following the compression process of the spring 35 until the gap increases, facilitating the detachment of the cable.

[0065] Certainly, the above description is not a limitation to the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by those skilled in the art within the essence of the present invention should also fall within the protection scope of the present invention.

Claims

1. A sealing protection device for partial discharge detection of high voltage cables, characterized in that: Including a cover protection mechanism; The cover protection mechanism comprises an insulating cover plate, and the insulating cover plate has a cover cavity covering the cable detection section; The top of the insulating cover plate is connected with a lifting rod assembly, and the insulating cover plate is covered on the cable through the lifting rod assembly; Both ends of the cover cavity are respectively equipped with elastic pressure wheel assemblies connected to locking cables; The elastic pressure wheel assembly includes an upper elastic pressure wheel and a lower elastic pressure wheel, wherein the upper elastic pressure wheel is hinged with a lever assembly. During the process of locking the cable, the gap between the upper elastic pressure wheel and the lower elastic pressure wheel is increased by the lever assembly, and then the upper elastic pressure wheel and the lower elastic pressure wheel are used to lock the cable.

2. The high-voltage cable partial discharge detection sealing protection device according to claim 1 is characterized in that: The longitudinal cross-section of the insulating cover plate is U-shaped.

3. The high-voltage cable partial discharge detection sealing protection device according to claim 1 is characterized in that: The lifting rod assembly comprises a U-shaped hinge seat respectively fixedly connected to the front and rear sides of the top of the insulating lifting cover plate, a pin is hinged in the U-shaped hinge seat, and a U-shaped connecting rod is fixedly connected between the pins; The front and rear sides of the U-shaped connecting rod are respectively fixedly connected with telescopic lifting rods.

4. The high-voltage cable partial discharge detection sealing protection device according to claim 3 is characterized in that: The telescopic lifting rod comprises a sliding rod fixedly connected to a U-shaped connecting rod, the sliding rod is slidably connected to a long lifting tube, and the outer end of the long lifting tube is fixedly connected to a handle.

5. The high-voltage cable partial discharge detection sealing protection device according to claim 1 is characterized in that: The upper elastic pressure wheel and the lower elastic pressure wheel both comprise a wheel frame, in which the upper elastic wheel and the lower elastic wheel are hinged respectively.

6. The high-voltage cable partial discharge detection sealing protection device according to claim 5 is characterized in that: The upper elastic wheel and the lower elastic wheel are respectively provided with locking grooves for locking the cable.

7. The high-voltage cable partial discharge detection sealing protection device according to claim 6 is characterized in that: The wheel frames are respectively fixedly connected with sliding columns which are slidably connected to the insulating cover plate, and the sliding columns are sleeved with springs; The two ends of the spring are respectively fixedly connected to the wheel frame and the insulating cover plate.

8. The high-voltage cable partial discharge detection sealing protection device according to claim 7, characterized in that: The outer end of the sliding column is fixedly connected with a blocking cap.

9. The high-voltage cable partial discharge detection sealing protection device according to claim 7, characterized in that: The lever assembly includes a U-shaped lifting plate hinged on the upper elastic pressure wheel; The U-shaped lifting plate is hinged on the blocking cap, and a lever is fixedly connected to the U-shaped lifting plate.

10. The high-voltage cable partial discharge detection sealing protection device according to claim 1, characterized in that: A pull rope is fixedly connected to the lower end of the right side wall of the insulating cover plate; The right side wall of the insulating cover plate is provided with a plurality of detection line through holes.

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