Cable partial discharge detection device

Abstract

The present invention discloses a cable partial discharge detection device, comprising a detector and an upper frame and a lower frame both capable of sliding along the length direction of the cable to be tested, the upper frame being arranged directly above the lower frame, and the upper frame and the lower frame being detachably connected by fasteners, a first groove being arranged in a depression on one side of the upper frame facing the lower frame, a second groove being arranged in a depression on one side of the lower frame facing the upper frame, the first groove and the second groove forming a placement position for placing the cable, the detector being fixedly arranged on the upper frame, a conductive elastic extrusion piece being fixed on the inner side wall of the first groove, the elastic extrusion piece being electrically connected to the detector, and the elastic extrusion piece being in contact with the cable in the placement position. The device can be applied to the detection of cables of different diameters.

Description

Technical Field

[0001] The present invention relates to the technical field of discharge detection, and particularly relates to a device for detecting partial discharge of a cable. Background Art

[0002] Cables play a very important role in current power transmission. If the leakage of the cable cannot be detected in time, it will cause huge economic losses. Therefore, it is necessary to detect the insulation performance of the cable. When detecting the insulation of the cable, it is often necessary to replace different detection devices according to the diameter of the cable of different sizes. This requires carrying various types of detection devices to detect the cable. However, the detection devices are generally heavy, and it is not convenient to carry various types of detection devices simultaneously during actual operation, and a variety of detection devices increase the cost of cable insulation detection. Summary of the Invention

[0003] The purpose of the present invention is to provide a device for detecting partial discharge of a cable, which can be applied to detect cables with different diameters.

[0004] To achieve this purpose, the present invention adopts the following technical solutions:

[0005] Provide a device for detecting partial discharge of a cable, including a detector and an upper frame and a lower frame that can both slide along the length direction of the cable to be detected. The upper frame is arranged directly above the lower frame, and the upper frame and the lower frame are detachably connected by a fastener. A first groove is recessed on the side of the upper frame facing the lower frame, and a second groove is recessed on the side of the lower frame facing the upper frame. The first groove and the second groove form a placement position for placing the cable. The detector is fixedly arranged on the upper frame. A conductive elastic pressing member is fixed on the inner side wall of the first groove. The elastic pressing member is electrically connected to the detector, and the elastic pressing member contacts the cable in the placement position.

[0006] As a preferred technical solution of the device for detecting partial discharge of the cable, the elastic pressing member includes a contact section that abuts against the surface of the cable and two bending sections respectively arranged at opposite ends of the contact section. The contact section is spaced below the inner wall of the first groove, and the end of the bending section away from the contact section extends towards the inner wall of the first groove.

[0007] As a preferred technical solution of the device for detecting partial discharge of the cable, an arc-shaped groove is recessed on the side of the contact section facing the placement position, and the inner wall of the arc-shaped groove fits the surface of the cable.

[0008] As a preferred technical solution of the cable partial discharge detection device, first connecting convex parts are respectively arranged on both sides in the width direction of the upper frame, second connecting convex parts are respectively arranged on both sides in the width direction of the lower frame, and the first connecting convex parts and the second connecting convex parts are detachably connected through the fasteners.

[0009] As a preferred technical solution of the cable partial discharge detection device, it further includes a guiding and sliding assembly. The guiding and sliding assembly includes a rolling member that can roll on the surface of the cable and a fixing member fixed on the upper frame. The rolling members and the upper frame are spaced along the length direction of the cable. The fixing member has opposite first and second ends. The first end penetrates from the outside of the upper frame into the inside of the first groove and is fixedly connected to the elastic pressing member. The second end extends to one end in the length direction of the upper frame, and the rolling member is connected to the second end through a connecting assembly.

[0010] As a preferred technical solution of the cable partial discharge detection device, a fixing block is arranged at the second end of the fixing member, and the fixing block is connected to the rolling member through the connecting assembly.

[0011] As a preferred technical solution of the cable partial discharge detection device, the connecting assembly includes a U-shaped frame, a first elastic member, and two connecting plates. The U-shaped frame includes a cross bar and two vertical bars perpendicular to the cross bar. The two side surfaces of the fixing block located on both sides in the width direction of the upper frame are respectively a first side surface and a second side surface. The fixing block is provided with a vertical hole penetrating through the first side surface and the second side surface, and the length direction of the vertical hole extends along the vertical direction. The cross bar penetrates through the vertical hole. The two connecting plates are respectively arranged close to the first side surface and the second side surface. The connecting plates are provided with a first avoidance hole for avoiding the cross bar at the upper end of the rolling member. A through hole is penetrated through the top of the first avoidance hole. The upper ends of the vertical bars penetrate through the through hole and extend to the top of the connecting plates. The end of the vertical bar away from the cross bar has a limiting portion, and the first elastic member is sleeved on the portion of the vertical bar between the limiting portion and the connecting plate.

[0012] As a preferred technical solution of the cable partial discharge detection device, it further includes a support assembly and a limiting member. The support assembly includes a base, a support member, a connecting member that can move up and down relative to the support member, and a clamping plate located at the bottom of the second groove. The cable is clamped between the clamping plate and the elastic pressing member. The base is spaced below the lower frame. The lower frame is provided with a second avoidance hole penetrating through it. One end of the connecting member is slidably connected to the support member, and the other end passes through the second avoidance hole and is fixed to the clamping plate. The upper frame is located above the support member. The limiting member is threadedly connected to the support member, and the limiting member abuts against the bottom of the connecting member to limit the connecting member.

[0013] As a preferred technical solution of the cable partial discharge detection device, the connecting member includes a sleeve frame sleeved on the outer periphery of the connecting member and a plurality of connecting rods connected to the sleeve frame. All the connecting rods are evenly distributed on the outer periphery of the sleeve frame. There are a plurality of the second avoidance holes on the upper frame, and the second avoidance holes correspond to the connecting rods one by one. The end of the connecting rod far from the sleeve frame passes through the second avoidance hole and is fixed to the clamping plate. The limiting member abuts against the bottom of the sleeve frame.

[0014] As a preferred technical solution of the cable partial discharge detection device, a second elastic member is arranged between the sleeve frame and the lower frame. The upper end and the lower end of the second elastic member are respectively connected to the sleeve frame and the lower frame.

[0015] The beneficial effects of the present invention are as follows: An elastic pressing member is arranged on the upper frame, and the detector is electrically connected to the elastic pressing member, so that cables with different diameters can be in contact with the elastic pressing member after being placed in the placement position between the upper frame and the lower frame. When the cable leaks electricity, the current of the cable is introduced into the detector through the elastic pressing member, and the detector detects the insulation of the cable. This kind of cable partial discharge detection device with such a structure can be applicable to the detection of cables with different diameters, improves the applicability of the cable partial discharge detection device, is convenient to use, and is beneficial to reducing the detection cost. Description of the Drawings

[0016] The present invention will be further described in detail below with reference to the drawings and embodiments.

[0017] Figure 1 It is a structural schematic diagram of the cable partial discharge detection device for detecting a cable in the embodiment.

[0018] Figure 2 It is a structural diagram of the upper frame, the detector, the elastic pressing member and the guide sliding assembly in the embodiment.

[0019] Figure 3 It is a structural diagram of the lower frame and the support assembly in the embodiment.

[0020] Figure 4 For Figure 2 An enlarged view of part A in

[0021] In the figure:

[0022] 100, cable;

[0023] 1, upper frame; 11, first connecting convex part; 12, first connecting hole; 2, lower frame; 21, second connecting convex part; 22, second connecting hole; 3, elastic pressing part; 31, abutting section; 32, bending section; 4, guiding and sliding component; 41, rolling part; 411, roller; 412, connecting shaft; 42, fixing part; 43, fixing block; 431, vertical hole; 44, connecting component; 441, connecting plate; 4411, first avoiding hole; 442, U-shaped frame; 4421, vertical rod; 4422, cross rod; 4423, limiting part; 443, first elastic part; 5, supporting component; 51, base; 52, supporting part; 521, separating strip; 53, connecting part; 531, sleeve frame; 5311, mounting hole; 532, connecting rod; 54, clamping plate; 55, second elastic part; 6, limiting part; 7, fastening part; 71, fastening bolt; 72, fastening nut; 8, detector. Specific embodiments

[0024] To make the technical problems solved by the present invention, the technical solutions adopted and the achieved technical effects clearer, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present invention.

[0025] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include contact between the first and second features not directly but through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the horizontal height of the first feature is less than that of the second feature.

[0027] As Figures 1 to 4 shown, the present invention provides a cable partial discharge detection device for detecting the insulation of a cable 100. The cable partial discharge detection device includes a detector 8 and an upper frame 1 and a lower frame 2 that can both slide relative to the length direction of the cable 100 to be measured. The upper frame 1 is disposed directly above the lower frame 2, and the upper frame 1 and the lower frame 2 are detachably connected by a fastener 7. A first groove is recessed on the side of the upper frame 1 facing the lower frame 2, and a second groove is recessed on the side of the lower frame 2 facing the upper frame 1. The first groove and the second groove form a placement position for placing the cable 100. The detector 8 is fixedly disposed on the upper frame 1. A conductive elastic pressing member 3 is fixed on the inner sidewall of the first groove. The elastic pressing member 3 is electrically connected to the detector 8, and the elastic pressing member 3 contacts the cable 100 in the placement position. Preferably, the elastic pressing member 3 is made of copper, and the elastic pressing member 3 made of copper has good electrical conductivity. In specific implementation, the detector 8 is grounded. The detector 8 is a prior art and will not be elaborated herein.

[0028] In this embodiment, an elastic extrusion member 3 is arranged on the upper rack 1, and the detector 8 is electrically connected to the elastic extrusion member 3, so that cables 100 with different diameters can be in contact with the elastic extrusion member 3 after being placed at the placement position between the upper rack 1 and the lower rack 2. When the elastic extrusion member 3 contacts the leakage part of the cable 100, the current of the cable 100 passes through the elastic extrusion member 3 and enters the detector 8, and the detector 8 detects the insulation of the cable. The partial discharge detection device for cables with this structure can be applied to the detection of cables 100 with different diameters, improving the applicability of the partial discharge detection device for cables, facilitating use, and helping to reduce the detection cost. During specific use, after the cable 100 to be tested is threaded through the placement position, the elastic extrusion member 3 contacts the cable 100 inside the placement position. Along the length direction of the cable 100, the upper rack 1 and the lower rack 2 are simultaneously moved relative to the cable 100. Since the detector 8 and the elastic extrusion member 3 are both fixed on the upper rack 1, the movement of the upper rack 1 also drives the detector 8 and the elastic extrusion member 3 to move synchronously. During the movement of the elastic extrusion member 3, it always contacts the surface of the cable 100. When the elastic extrusion member 3 moves to the leakage part of the cable 100, the current of the cable 100 enters the detector 8 through the elastic extrusion member, and the current is grounded through the detector 8. At this time, the alarm inside the detector 8 alarms, and the upper rack 1 and the lower rack 2 stop moving. The position where the cable leaks electricity is within the coverage area of the elastic extrusion member 3.

[0029] Wherein, first connection protrusions 11 are respectively arranged on both sides in the width direction of the upper rack 1, and second connection protrusions 21 are respectively arranged on both sides in the width direction of the lower rack 2. The first connection protrusions 11 and the second connection protrusions 21 are detachably connected by a fastener 7. The fastener 7 includes a fastening bolt 71 and a fastening nut 72. A first connection hole 12 is penetrated through the first connection protrusion 11, and a second connection hole 22 is penetrated through the second protrusion. The end of the fastening bolt 71 away from the nut sequentially passes through the second connection hole 22 and the first connection hole 12 and protrudes above the top of the first connection part, and the fastening nut 72 is tightened on the end of the fastening bolt 71 protruding from the fastening nut 72. The first connection protrusions 11 and the second connection protrusions 21 provide space for the connection between the upper rack 1 and the lower rack 2, and the locking degree between the upper rack 1 and the lower rack 2 can be adjusted through the fastener 7. During use, when the upper rack 1 and the lower rack 2 move to the leakage part of the cable 100, the upper rack 1 and the lower rack 2 stop moving, and the screws are tightened to fix the upper rack 1 and the lower rack 2 at the leakage part of the cable 100, which is convenient for subsequent staff to find the part where the cable 100 leaks electricity within the coverage area of the elastic extrusion member for the cable 100.

[0030] In one embodiment, the elastic extrusion member 3 includes a contact section 31 that abuts against the surface of the cable 100 and two bending sections 32 respectively disposed at opposite ends of the contact section 31. The contact section 31 is spaced below the inner wall of the first groove, the lower end of the bending section 32 is connected to the contact section 31, and the upper end extends toward the inner wall of the first groove. The contact section 31 is spaced below the inner wall of the first groove, reserving a space for elastic deformation of the elastic extrusion member 3 between the contact section 31 and the upper frame 1, so that the elastic extrusion member 3 can always contact the cable 100 inside the placement position. The bending sections 32 at both ends of the contact section 31 can prevent the cable 100 from abutting against the inner wall of the first groove, enabling the elastic extrusion member 3 to provide sufficient elastic support force for the upper frame 1.

[0031] Specifically, an arc-shaped groove is recessed on the side of the contact section 31 facing the placement position, and the inner wall of the arc-shaped groove fits the surface of the cable. When the cable 100 passes through the placement position, the inner wall of the arc-shaped groove fits the surface of the cable 100, increasing the contact surface between the cable 100 and the elastic extrusion member 3 and ensuring the reliability of the contact between the elastic extrusion member 3 and the cable 100.

[0032] In one embodiment, referring to Figure 2 and Figure 4 , the cable partial discharge detection device further includes a guiding and sliding component 4. The guiding and sliding component 4 includes a rolling member 41 that can roll on the surface of the cable 100 and a fixing member 42 fixed on the upper frame 1. The rolling member 41 and the upper frame 1 are spaced along the length direction of the cable 100. The fixing member 42 has opposite first and second ends. The first end penetrates from the outside of the upper frame 1 into the inside of the first groove and is fixedly connected to the elastic extrusion member 3, and the second end extends to one end of the upper frame 1 in the length direction. The rolling member 41 is connected to the second end through a connecting component 44. During detection, along the length direction of the cable 100, the upper frame 1 and the lower frame 2 slide relative to the cable 100. The movement of the upper frame 1 drives the rolling member 41 to roll on the surface of the cable 100, using the rolling member 41 to guide the sliding of the upper frame 1 and the lower frame 2, reducing the friction between the elastic extrusion member 3 and the cable 100, and preventing the surface of the cable 100 from being worn due to sliding. In addition, the fixing member 42 also serves to fix the elastic extrusion member 3, fixing the elastic extrusion member 3 inside the first groove.

[0033] Wherein, a fixing block 43 is provided at the second end of the fixing member 42. The fixing block 43 is connected to the rolling member 41 through the connecting component 44. The fixing block 43 does not contact the cable 100, providing positioning and support for the rolling member 41 to ensure that the rolling member 41 moves synchronously with the upper frame 1.

[0034] The connecting component 44 includes a U-shaped frame 442, a first elastic member 443, and two connecting plates 441. The U-shaped frame 442 includes a cross bar 4422 and two vertical bars 4421 perpendicular to the cross bar 4422. The two side surfaces of the fixing block 43 on both sides of the width direction of the upper frame 1 are respectively the first side surface and the second side surface. The fixing block 43 is provided with a vertical hole 431 penetrating through the first side surface and the second side surface. The length direction of the vertical hole 431 extends along the vertical direction. The cross bar 4422 passes through the vertical hole 431. The two connecting plates 441 are respectively arranged close to the first side surface and the second side surface. The connecting plate 441 is provided with a first avoidance hole 4411 for avoiding the cross bar 4422 at the upper end of the rolling member 41. A through hole is provided through the top of the first avoidance hole 4411. The upper end of the vertical bar 4421 passes through the through hole and extends to the top of the connecting plate 441. The end of the vertical bar 4421 away from the cross bar 4422 has a limiting portion 4423. The first elastic member 443 is sleeved on the portion of the vertical bar 4421 between the limiting portion 4423 and the connecting plate 441. When the rolling member 41 abuts against the cable 100, since the rolling member 41 is connected to the connecting plate 441, under the reaction force of the cable 100 on the rolling member 41, the connecting plate 441 moves upward, and then drives the U-shaped frame 442 to move upward. During the upward movement of the U-shaped frame 442, the first elastic member 443 on the top of the connecting plate 441 will be squeezed. By using the elastic force of the first elastic member 443 to share the pressure applied on the upper frame 1, the extrusion force of the elastic extrusion member 3 on the cable 100 can be reduced, thereby further reducing the frictional damage between the elastic extrusion member 3 and the cable 100.

[0035] Preferably, the first elastic member 443 is a compression spring.

[0036] Specifically, the rolling member 41 includes a roller 411 and a connecting shaft 412 respectively connecting the two connecting plates 441. The roller 411 is rotatably sleeved on the portion of the connecting shaft 412 between the two connecting plates 441. Since the roller 411 contacts the cable 100, the roller 411 is made of an insulating material.

[0037] Preferably, two sets of guiding and sliding components 4 are provided, and the two sets are respectively spaced and distributed at both ends of the upper frame 1 in the length direction. In other examples, in order to save manufacturing costs, only one set of guiding and sliding components 4 can also be provided.

[0038] In another embodiment, the cable partial discharge detection device further includes a support assembly 5 and a limiting member 6. The support assembly 5 includes a base 51, a support member 52, a connecting member 53 that can move up and down relative to the support member 52, and a clamping plate 54 located at the bottom of the second groove. The cable 100 is clamped between the clamping plate 54 and the elastic pressing member 3. The base 51 is spaced below the lower frame 2. The lower frame 2 is provided with a second avoidance hole. One end of the connecting member 53 is slidably connected to the support member 52, and the other end passes through the second avoidance hole and is fixed to the clamping plate 54. The upper frame 1 is located above the support member 52. The limiting member 6 is threadedly connected to the support member 52, and the limiting member 6 abuts against the bottom of the connecting member 53 to limit the connecting member 53. The clamping plate 54 provides a supporting effect for the cable 100. By sliding the connecting member 53 on the support member 52, the clamping plate 54 can be driven to move vertically in the first groove, changing the distance between the clamping plate 54 and the elastic pressing member 3, so as to adjust the clamping force of the clamping plate 54 and the elastic pressing member 3 on the cable 100, ensuring the stability of the upper frame 1 and the lower frame 2 moving on the surface of the cable 100, and avoiding large fluctuations of the upper frame 1 and the lower frame 2 on the surface of the cable 100, thereby ensuring the accuracy of the detector 8 detecting the cable 100. The support member 52 mainly provides a supporting effect for the connecting member 53. The upper frame 1 is located above the support member 52, and the upper frame 1 can rise relative to the support member 52. Specifically, the support member 52 has an external thread section extending along its height direction. The limiting member 6 is provided with a threaded hole matching the external thread section. The limiting member 6 is screwed onto the support member 52 through the threaded hole. Rotating the limiting member 6 can change the position of the limiting member 6 on the support member 52, and the limiting member 6 is used to limit the specific position of the connecting member 53 on the support member 52 to position the clamping plate 54.

[0039] The connecting member 53 includes a sleeve frame 531 sleeved on the outer periphery of the connecting member 53 and a plurality of connecting rods 532 connected to the sleeve frame 531. All the connecting rods 532 are evenly distributed on the outer periphery of the sleeve frame 531. There are a plurality of second avoidance holes on the upper frame 1, and the second avoidance holes correspond to the connecting rods 532 one by one. One end of the connecting rod 532 away from the sleeve frame 531 passes through the second avoidance hole and is fixed to the clamping plate 54. The limiting member 6 abuts against the bottom of the sleeve frame 531. Sliding the sleeve frame 531 relative to the connecting member 53 drives the connecting rods 532 to slide in the vertical direction, thereby changing the clamping force between the clamping plate 54 and the elastic pressing member 3. Since the clamping plate 54 has a certain length, a plurality of connecting rods 532 are arranged to be connected to the clamping plate 54, and the cable 100 can be clamped at multiple positions of the clamping plate 54 to ensure the contact effect between the elastic pressing member 3 and the cable 100.

[0040] A second elastic member 55 is provided between the sleeve frame 531 and the lower frame 2. The upper end and the lower end of the second elastic member 55 are respectively connected to the sleeve frame 531 and the lower frame 2. Preferably, the second elastic member 55 is a compression spring. During the upward movement of the sleeve frame 531, the second elastic member 55 is driven to squeeze the lower frame 2 to move upward, thereby squeezing the clamping plate 54, so that the cable 100 is tightly clamped.

[0041] Further, the support member 52 is of a hollow structure. The support member 52 is composed of a first section and a second section connected to the second section. The first section is located above the second section. The second section includes a plurality of partition strips 521. The plurality of partition strips 521 are spaced and evenly distributed around the axis of the first section. One end of the partition strip 521 is connected to the first section, and the other end is fixed to the base 51. The sleeve frame 531 is provided with mounting holes 5311 for the partition strips 521 to pass through. The mounting holes 5311 correspond to the partition strips 521 one by one. The lower end of the second elastic member 55 is connected to the center of the sleeve frame 531, and the upper end passes through the second section and is connected to the lower frame 2.

[0042] During specific use, the dimensions of the base 51 are larger than those of the upper frame 1 and the lower frame 2. This design allows heavy objects to be placed on the base 51, so that the total weight of the lower frame 2, the clamping plate 54, the support assembly 5 and the limiting member 6 is greater than the total weight of the upper frame 1 and the guide sliding assembly 4, avoiding the situation of the cable partial discharge detection device being top-heavy and bottom-light, and enabling the centers of gravity of the upper frame 1 and the lower frame 2 to always be on the same vertical line, so that the upper frame 1 and the lower frame 2 can move stably on the surface of the cable.

[0043] In the description of this article, it should be understood that the orientation or positional relationships such as "upper", "lower", "left", "right", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0044] In the description of this specification, the description referring to terms such as "one embodiment", "example", etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0045] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only includes an independent technical solution. The narrative way of this specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0046] The technical principles of the present invention have been described above in connection with specific embodiments. These descriptions are only for explaining the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art can readily conceive of other specific embodiments of the present invention without creative efforts, and these embodiments will fall within the scope of protection of the present invention.

Claims

1. A cable partial discharge detection device, characterized in that , comprising a detector and an upper frame and a lower frame both of which can slide along the length direction of the cable to be tested, the upper frame is arranged directly above the lower frame, and the upper frame and the lower frame are detachably connected by fasteners, a first groove is recessed on one side of the upper frame facing the lower frame, a second groove is recessed on one side of the lower frame facing the upper frame, the first groove and the second groove form a placement position for placing the cable, the detector is fixedly arranged on the upper frame, a conductive elastic extrusion piece is fixed on the inner side wall of the first groove, the elastic extrusion piece is electrically connected to the detector, and the elastic extrusion piece is in contact with the cable in the placement position; A guide slide assembly, the guide slide assembly comprising a rolling member that can roll on the surface of the cable and a fixing member fixed on the upper frame, the rolling member and the upper frame are spaced apart along the length direction of the cable, the fixing member has a first end and a second end opposite to each other, the first end is inserted from the outside of the upper frame into the inside of the first groove and is fixedly connected to the elastic extrusion member, the second end extends to one end of the upper frame in the length direction, and the rolling member is connected to the second end through a connecting assembly; A support assembly and a limiter, the support assembly comprises a base, a support, a connecting member movable up and down relative to the support, and a clamping plate located at the bottom of the second groove, the cable is clamped between the clamping plate and the elastic extrusion member, the base is arranged below the lower frame at intervals, the lower frame is penetrated by a second avoidance hole, one end of the connecting member is slidably connected to the support, and the other end passes through the second avoidance hole and is fixed to the clamping plate, the upper frame is located above the support, the limiter is threadedly connected to the support, and the limiter is pressed against the bottom of the connecting member to limit the connecting member; The connecting member includes a sleeve mounted on the outer periphery of the connecting member and a plurality of connecting rods connected to the sleeve, all of the connecting rods are evenly distributed on the outer periphery of the sleeve, the upper frame has a plurality of second avoidance holes, and the second avoidance holes correspond to the connecting rods one by one, one end of the connecting rod away from the sleeve passes through the second avoidance hole and is fixed to the clamping plate, and the limit member abuts against the bottom of the sleeve.

2. The cable partial discharge detection device according to claim 1, characterized in that: The elastic extrusion member includes an abutting section abutting against the cable surface and two bending sections respectively arranged at opposite ends of the abutting section. The abutting section is arranged at intervals below the inner wall of the first groove, and one end of the bending section away from the abutting section extends toward the inner wall of the first groove.

3. The cable partial discharge detection device according to claim 2, characterized in that: A side of the abutting section facing the placement position is recessed and provided with an arc-shaped groove, and an inner wall of the arc-shaped groove is in contact with the surface of the cable.

4. The cable partial discharge detection device according to claim 1, characterized in that: The upper frame is provided with first connecting protrusions on both sides in the width direction, and the lower frame is provided with second connecting protrusions on both sides in the width direction, and the first connecting protrusion and the second connecting protrusion are detachably connected by the fastener.

5. The cable partial discharge detection device according to claim 1, characterized in that: The second end of the fixing member is provided with a fixing block, and the fixing block is connected to the rolling member through the connecting assembly.

6. The cable partial discharge detection device according to claim 5, characterized in that: The connecting assembly comprises a U-shaped frame, a first elastic member and two connecting plates, the U-shaped frame comprises a cross bar and two vertical bars perpendicular to the cross bar, the two side surfaces of the fixing block located in the width direction of the upper frame are respectively a first side surface and a second side surface, the fixing block is penetrated by a vertical hole to be provided with the first side surface and the second side surface, the length direction of the vertical hole extends along the vertical direction, the cross bar is penetrated by the vertical hole, the two connecting plates are respectively arranged close to the first side surface and the second side surface, the connecting plate is located at the upper end of the rolling member and is provided with a first avoidance hole to avoid the cross bar, the top of the first avoidance hole is penetrated by a through hole, the upper end of the vertical bar passes through the through hole and extends to the top of the connecting plate, the vertical bar has a limiting portion at one end away from the cross bar, and the first elastic member is sleeved on the position of the vertical bar between the limiting portion and the connecting plate.

7. The cable partial discharge detection device according to claim 1, characterized in that: A second elastic member is arranged between the sleeve frame and the lower frame, and an upper end and a lower end of the second elastic member are connected to the sleeve frame and the lower frame respectively.

Images