Partial discharge detection device

Abstract

The invention provides a partial discharge detection device, which comprises a clamping component, the clamping component comprises two movably connected clamping parts, a detection piece is arranged in each clamping part, a detection space for a to-be-detected piece to pass through is arranged between the two clamping parts, the clamping component has a first state in which the detection space is closed, and a second state in which the to-be-detected piece passes through the detection space; detecting a second state in which the space has a gap; and an extrusion part is arranged at the end of the transmission rod, and the transmission rod is rotatably arranged around the axis of the transmission rod so as to drive the extrusion part to extrude any one of the two clamping parts to swing, so that the clamping part is switched to the first state from the second state. According to the invention, the problem that the detection of the partial discharge signal in the prior art is time-consuming and labor-consuming is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of partial discharge detection, and in particular to a partial discharge detection device. Background Art

[0002] Partial discharge is an important cause of insulation breakdown in electrical equipment, which can lead to electrical equipment failure. Partial discharge detection sensors can monitor partial discharge signals in real time, and promptly find the location of partial discharge in electrical equipment, helping to prevent and diagnose potential insulation problems in electrical equipment.

[0003] However, when using partial discharge detection sensors to detect electrical equipment such as cables in operation, the partial discharge detection sensors can be directly placed on the cables for measurement. However, since cables are generally located at high positions, operators need to climb up to detect the cables, making the detection of partial discharge signals time-consuming and labor-intensive. Summary of the invention

[0004] The main purpose of the present invention is to provide a partial discharge detection device to solve the problem that the detection of partial discharge signals in the prior art is relatively time-consuming and labor-intensive.

[0005] In order to achieve the above-mentioned purpose, the present invention provides a partial discharge detection device, comprising: a clamping component, the clamping component comprising two movably connected clamping parts, a detection piece is installed in the clamping part, a detection space for the detection piece to be detected to pass through is provided between the two clamping parts, the clamping component has a first state in which the detection space is closed, and a second state in which a gap exists in the detection space; a transmission rod, an extrusion piece is provided at the end of the transmission rod, the transmission rod is rotatably arranged around the axis of the transmission rod to drive the extrusion piece to squeeze any one of the two clamping parts to swing, so that the clamping component is switched from the second state to the first state.

[0006] Furthermore, the two clamping parts are respectively a first clamping part and a second clamping part, the first end of the first clamping part and the first end of the second clamping part are hingedly connected, and the clamping part also includes an elastic member, and the two ends of the elastic member are respectively connected to the first clamping part and the second clamping part; wherein, when the clamping part is in the first state, the second end of the first clamping part and the second end of the second clamping part are abutted and connected, and the elastic member is squeezed.

[0007] Furthermore, a first connecting portion is provided at the first end of the first clamping portion, and a second connecting portion is provided at the first end of the second clamping portion. The first connecting portion and the second connecting portion are hingedly connected via a first hinge axis, and the extrusion member squeezes the second connecting portion to enable the second clamping portion to swing around the first hinge axis relative to the first clamping portion.

[0008] Furthermore, the extrusion piece has a first extrusion bevel, and the second extrusion bevel is arranged on the second connecting part. The first extrusion bevel and the second extrusion bevel are adapted to each other, and the first extrusion bevel is inclined at a preset angle relative to the axial cross-section of the transmission rod so that the second extrusion bevel can be extruded by the first extrusion bevel, so that the extrusion piece extrude the second connecting part.

[0009] Furthermore, the partial discharge detection device also includes a connecting seat, the connecting seat includes a connecting column, the transmission rod is movably arranged in the connecting column, a first thread groove is arranged on the circumferential inner wall of the connecting column, a first thread protrusion is arranged on the circumferential outer wall of the transmission rod, the first thread groove is adapted to the first thread protrusion, so as to drive the extrusion piece to move toward the direction close to the second connection part to extrude the second connection part through the rotation of the transmission rod.

[0010] Furthermore, the partial discharge detection device also includes a protective cover, which is mounted on the transmission rod, the connecting column is passed through the end of the protective cover, the connecting seat is connected to the clamping component, and the angle between the extension direction of the first hinge axis and the extension direction of the protective cover can be adjusted.

[0011] Furthermore, a threaded connection shaft is provided on the connection seat, and the first connection part is sleeved on the threaded connection shaft so that the first connection part can rotate around the threaded connection shaft relative to the protective sleeve to adjust the angle between the extension direction of the first hinge shaft and the extension direction of the protective sleeve.

[0012] Furthermore, the connecting seat also includes a connecting plate, the connecting plate is connected to the connecting column, the connecting column extends along the extension direction of the transmission rod, and the threaded connecting shaft is arranged on the connecting plate.

[0013] Furthermore, a limiting protrusion is provided on the connecting plate, and a plurality of limiting grooves are provided on the first connecting portion along the circumferential direction of the threaded connecting shaft. The limiting grooves and the limiting protrusion are adapted to each other so as to limit the clamping component by clamping the limiting protrusion and any one of the plurality of limiting grooves.

[0014] Furthermore, the partial discharge detection device also includes a fastener, which is sleeved on the threaded connection shaft and abuts against an end surface of the first connection portion away from the connection plate to limit the first connection portion.

[0015] By applying the technical solution of the present invention, the partial discharge detection device includes a clamping component and a transmission rod, wherein the clamping component includes two movably connected clamping parts, a detection piece is installed in the clamping part, and a detection space for the piece to be detected to pass through is provided between the two clamping parts. The user drives the clamping component to move to the piece to be detected through the transmission rod, so that the piece to be detected enters the detection space from the gap, and then rotates the transmission rod so that the transmission rod drives the extrusion piece to squeeze any one of the two clamping parts, and swings relative to the other clamping part, so that the gap is gradually reduced until the detection space is closed, and the clamping component is switched from the second state to the first state at this time, so as to avoid the separation of the piece to be detected from the clamping component, and ensure that the detection piece can fully detect the piece to be detected, so that the user does not need to climb high to detect the piece to be detected at a high place, thereby solving the problem that the detection of partial discharge signals in the prior art is relatively time-consuming and labor-intensive, improving the detection efficiency of the piece to be detected, and reducing the work intensity of the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic structural diagram showing a first angle of an embodiment of a partial discharge detection device according to the present invention;

[0018] Figure 2 A schematic structural diagram showing a second angle of an embodiment of a partial discharge detection device according to the present invention;

[0019] Figure 3 A schematic structural diagram showing a first angle of a clamping component, a transmission rod, a connecting seat and a fastener of a partial discharge detection device according to the present invention;

[0020] Figure 4 A second perspective structural diagram of the clamping component, the transmission rod, the connecting seat and the fastener of the partial discharge detection device according to the present invention is shown;

[0021] Figure 5 A schematic structural diagram of a clamping component and a fastener of a partial discharge detection device according to the present invention is shown.

[0022] The above drawings include the following reference numerals:

[0023] 1. Detection member; 2. Detection space; 20. Transmission rod; 21. Extrusion member; 11. First clamping part; 12. Second clamping part; 30. First connecting part; 31. Second connecting part; 32. First hinge axis; 211. First extrusion slope; 321. Second extrusion slope; 41. Connecting column; 42. First threaded protrusion; 50. Protective cover; 43. Connecting plate; 45. Limiting groove; 46. Limiting protrusion; 60. Fastener; 52. Wrist guard; 53. Threaded connecting shaft. DETAILED DESCRIPTION

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0026] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0027] Please refer to Figures 1 to 5The present invention provides a partial discharge detection device, comprising: a clamping component, the clamping component comprising two movably connected clamping parts, a detection piece 1 is installed in the clamping part, a detection space 2 for the detection piece to be detected to pass through is provided between the two clamping parts, the clamping component has a first state in which the detection space 2 is closed, and a second state in which a gap exists in the detection space 2; a transmission rod 20, an extrusion piece 21 is provided at the end of the transmission rod 20, and the transmission rod 20 is rotatably arranged around the axis of the transmission rod 20 to drive the extrusion piece 21 to squeeze any one of the two clamping parts to swing, so that the clamping component is switched from the second state to the first state.

[0028] The partial discharge detection device of the present invention comprises a clamping component and a transmission rod 20, wherein the clamping component comprises two movably connected clamping parts, a detection piece 1 is installed in the clamping part, and a detection space 2 for the detection piece to be detected to pass through is provided between the two clamping parts. The user drives the clamping component to move to be mounted on the detection piece through the transmission rod 20, so that the detection piece to be detected enters the detection space 2 from the gap, and then rotates the transmission rod 20, so that the transmission rod 20 drives the extrusion piece to squeeze any one of the two clamping parts, and swings relative to the other clamping part, so that the gap is gradually reduced until the detection space 2 is closed, and at this time, the clamping component switches from the second state to the first state, avoiding the separation of the detection piece from the clamping component, ensuring that the detection piece 1 can fully detect the detection piece, so that the user does not need to climb high to detect the detection piece located at a high place, thereby solving the problem that the detection of partial discharge signals in the prior art is relatively time-consuming and labor-intensive, improving the detection efficiency of the detection piece to be detected, and reducing the work intensity of the operator.

[0029] Optionally, the component to be detected is a cable; and the detection component 1 is a sensor.

[0030] Specifically, a fixing screw is provided on the inner cavity of the clamping part, and the detection part 1 is inserted into the fixing screw so that the detection part 1 is tightly connected to the clamping part.

[0031] In this embodiment, the two clamping parts are respectively a first clamping part 11 and a second clamping part 12, the first end of the first clamping part 11 and the first end of the second clamping part 12 are hingedly connected, and the clamping component also includes an elastic member, and the two ends of the elastic member are respectively connected to the first clamping part 11 and the second clamping part 12; wherein, when the clamping component is in the first state, the second end of the first clamping part 11 and the second end of the second clamping part 12 are abutted and connected, and the elastic member is squeezed.

[0032] In this embodiment, a first connecting portion 30 is provided at the first end of the first clamping portion 11, and a second connecting portion 31 is provided at the first end of the second clamping portion 12. The first connecting portion 30 and the second connecting portion 31 are hingedly connected via a first hinge shaft 32. The extrusion member 21 squeezes the second connecting portion 31 to allow the second clamping portion 12 to swing around the first hinge shaft 32 relative to the first clamping portion 11.

[0033] Specifically, the second connecting portion 31 is squeezed by the extrusion piece 21 so that the second clamping portion 12 swings around the first hinge axis 32 relative to the first clamping portion 11 until the second end of the first clamping portion 11 and the second end of the second clamping portion 12 are abutted and connected, so that the gap is gradually reduced until the detection space 2 is closed, ensuring that the clamping component can smoothly switch from the second state to the first state.

[0034] Specifically, when the clamping component is in the first state, the second end of the first clamping portion 11 and the second end of the second clamping portion 12 are abutted and connected, and the elastic member is squeezed. Such an arrangement enables the elastic member to be full of elastic force when the clamping component is in the first state. When the squeezing member 21 stops squeezing the second clamping portion 12, the elastic force of the elastic member acts on the second clamping portion 12, causing the second clamping portion 12 to swing around the first hinge axis 32 relative to the first clamping portion 11, thereby facilitating the clamping component to switch from the first state to the second state.

[0035] In this embodiment, the extrusion member 21 has a first extrusion bevel 211, and a second extrusion bevel 321 is arranged on the second connecting portion 31. The first extrusion bevel 211 and the second extrusion bevel 321 are adapted to each other, and the first extrusion bevel 211 is inclined at a preset angle relative to the axial cross-section of the transmission rod 20 so that the second extrusion bevel 321 can be extruded by the first extrusion bevel 211, so that the extrusion member 21 can extrude the second connecting portion 31.

[0036] Specifically, such a configuration ensures that the force exerted by the extrusion member 21 on the second connection part 31 can push the second connection part 31 to swing around the first hinge axis 32 relative to the first connection part 30, thereby ensuring that the second clamping part 12 can swing around the first hinge axis 32 relative to the first clamping part 11, thereby ensuring that the clamping component can smoothly switch from the second state to the first state.

[0037] In this embodiment, the partial discharge detection device also includes a connecting seat, which includes a connecting column 41. The transmission rod 20 is movably inserted into the connecting column 41. A first thread groove is provided on the circumferential inner wall of the connecting column 41, and a first thread protrusion 42 is provided on the circumferential outer wall of the transmission rod 20. The first thread groove is adapted to the first thread protrusion 42 so that the rotation of the transmission rod 20 drives the extrusion member 21 to move toward the direction close to the second connection part 31 to extrude the second connection part 31.

[0038] Specifically, by adapting the first thread groove to the first thread protrusion 42, the extrusion piece 21 moves along the axial direction of the transmission rod 20 toward the second connection part 31 to extrude the second connection part 31 as the transmission rod 20 rotates, thereby ensuring that the extrusion piece 21 can smoothly extrude the second connection part 31; at the same time, the user can control the clamping component to switch between the first state and the second state by rotating the transmission rod 20, which is more labor-saving and reduces the difficulty of use for the user.

[0039] In this embodiment, the partial discharge detection device also includes a protective cover 50, which is sleeved on the transmission rod 20, the connecting column 41 is passed through the end of the protective cover 50, the connecting seat is connected to the clamping component, and the angle between the extension direction of the first hinge shaft 32 and the extension direction of the protective cover 50 can be adjusted.

[0040] Specifically, the protective cover 50 is used to protect the transmission rod 20, and the connecting seat is used to connect the clamping component and the protective cover 50; by adjusting the angle between the extension direction of the first hinge shaft 32 and the extension direction of the protective cover 50, the clamping component can be more easily clamped with the parts to be detected at different positions, so that the clamping component of the partial discharge detection device of the present invention can enter a relatively narrow area.

[0041] Specifically, the protective cover 50 is made of insulating material; a handle is provided at the end of the transmission rod 20 away from the clamping component, and the user can drive the transmission rod 20 to rotate through the handle; a hand ring 52 is provided at the middle position of the protective cover 50, and the hand ring 52 is used to remind the user that the area between the hand ring 52 on the protective cover 50 and the handle is a safe area to prevent the user from touching the area between the hand ring 52 on the protective cover 50 and the clamping component.

[0042] In this embodiment, a threaded connecting shaft 53 is provided on the connecting seat, and the first connecting part 30 is sleeved on the threaded connecting shaft 53 so that the first connecting part 30 can rotate around the threaded connecting shaft 53 relative to the protective cover 50 to adjust the angle between the extension direction of the first hinge shaft 32 and the extension direction of the protective cover 50.

[0043] Specifically, the first connecting portion 30 is sleeved on the threaded connecting shaft 53, so that the clamping component and the connecting seat are connected; the first connecting portion 30 is rotated around the threaded connecting shaft 53 relative to the protective cover 50, so that the angle between the extension direction of the first hinge shaft 32 and the extension direction of the protective cover 50 can be adjusted, thereby ensuring that the partial discharge detection device of the present invention can be applied to narrow working environments.

[0044] In this embodiment, the connection seat further includes a connection plate 43 , the connection plate 43 is connected to the connection column 41 , the connection column 41 extends along the extension direction of the transmission rod 20 , and the threaded connection shaft 53 is disposed on the connection plate 43 .

[0045] Specifically, the connecting shaft 53 is disposed on the connecting plate 43 through a threaded connection, and the connecting plate 43 is connected to the connecting column 41 , so that the first connecting portion 30 is connected to the protective cover 50 , and further the protective cover 50 is connected to the clamping component.

[0046] In this embodiment, a limiting protrusion 46 is provided on the connecting plate 43, and a plurality of limiting grooves 45 are provided on the first connecting portion 30 along the circumferential direction of the threaded connecting shaft 53. The limiting grooves 45 and the limiting protrusion 46 are adapted to each other so as to be connected by clamping the limiting protrusion 46 and any one of the plurality of limiting grooves 45 to limit the clamping component.

[0047] Specifically, by the connection between the limiting protrusion 46 and any one of the plurality of limiting grooves 45, the limiting protrusion 46 can limit the first connection part 30 to prevent the first connection part 30 from continuing to rotate around the threaded connection shaft 53, so that the angle between the extension direction of the first hinge shaft 32 and the extension direction of the protective cover 50 remains fixed at the current angle.

[0048] In this embodiment, the partial discharge detection device further includes a fastener 60 , which is sleeved on the threaded connecting shaft 53 , and abuts against the end surface of the first connecting portion 30 away from the connecting plate 43 to limit the first connecting portion 30 .

[0049] Specifically, by abutting the fastener 60 against the end surface of the first connection part 30 away from the connecting plate 43, the fastener 60 can limit the first connection part 30 to prevent the first connection part 30 from continuing to rotate around the threaded connection shaft 53, and also prevent the first connection part 30 from falling off the threaded connection shaft 53.

[0050] From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:

[0051] The partial discharge detection device of the present invention comprises a clamping component and a transmission rod 20, wherein the clamping component comprises two movably connected clamping parts, a detection piece 1 is installed in the clamping part, and a detection space 2 for the detection piece to be detected to pass through is provided between the two clamping parts. The user drives the clamping component to move to be mounted on the detection piece through the transmission rod 20, so that the detection piece to be detected enters the detection space 2 from the gap, and then rotates the transmission rod 20, so that the transmission rod 20 drives the extrusion piece to squeeze any one of the two clamping parts, and swings relative to the other clamping part, so that the gap is gradually reduced until the detection space 2 is closed, and at this time, the clamping component switches from the second state to the first state, avoiding the separation of the detection piece from the clamping component, ensuring that the detection piece 1 can fully detect the detection piece, so that the user does not need to climb high to detect the detection piece located at a high place, thereby solving the problem that the detection of partial discharge signals in the prior art is relatively time-consuming and labor-intensive, improving the detection efficiency of the detection piece to be detected, and reducing the work intensity of the operator.

[0052] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0053] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A partial discharge detection device, characterized in that: include: A clamping component, the clamping component comprising two movably connected clamping parts, a detection piece (1) being installed in the clamping part, a detection space (2) for the detection piece to be detected to pass through being provided between the two clamping parts, the clamping component having a first state in which the detection space (2) is closed, and a second state in which a gap exists in the detection space (2); A transmission rod (20), wherein an extrusion member (21) is disposed at the end of the transmission rod (20), and the transmission rod (20) is rotatably disposed around the axis of the transmission rod (20) to drive the extrusion member (21) to squeeze any one of the two clamping parts to swing, so that the clamping part switches from the second state to the first state.

2. The partial discharge detection device according to claim 1, characterized in that: The two clamping parts are respectively a first clamping part (11) and a second clamping part (12); the first end of the first clamping part (11) and the first end of the second clamping part (12) are hingedly connected; the clamping component also includes an elastic member, the two ends of the elastic member are respectively connected to the first clamping part (11) and the second clamping part (12); wherein when the clamping component is in the first state, the second end of the first clamping part (11) and the second end of the second clamping part (12) are abutted and connected, and the elastic member is squeezed.

3. The partial discharge detection device according to claim 2, characterized in that: The first end of the first clamping portion (11) is provided with a first connecting portion (30), and the first end of the second clamping portion (12) is provided with a second connecting portion (31); the first connecting portion (30) and the second connecting portion (31) are hingedly connected via a first hinge shaft (32); and the extrusion member (21) squeezes the second connecting portion (31) so that the second clamping portion (12) swings around the first hinge shaft (32) relative to the first clamping portion (11).

4. The partial discharge detection device according to claim 3, characterized in that: The extrusion member (21) has a first extrusion inclined surface (211), and the second connecting portion (31) is provided with a second extrusion inclined surface (321), the first extrusion inclined surface (211) and the second extrusion inclined surface (321) are adapted to each other, and the first extrusion inclined surface (211) is inclined at a preset angle relative to an axial cross section of the transmission rod (20), so that the second extrusion inclined surface (321) is extruded by the first extrusion inclined surface (211), so that the extrusion member (21) extrudes the second connecting portion (31).

5. The partial discharge detection device according to claim 3, characterized in that: The partial discharge detection device further comprises a connection seat, the connection seat comprising a connection column (41), the transmission rod (20) being movably arranged in the connection column (41), a first thread groove being arranged on the circumferential inner wall of the connection column (41), a first thread protrusion (42) being arranged on the circumferential outer wall of the transmission rod (20), the first thread groove being adapted to the first thread protrusion (42), so that the rotation of the transmission rod (20) drives the extrusion member (21) to move in a direction close to the second connection portion (31) to extrude the second connection portion (31).

6. The partial discharge detection device according to claim 5, characterized in that: The partial discharge detection device further comprises a protective sleeve (50), wherein the protective sleeve (50) is sleeved on the transmission rod (20), the connecting column (41) is inserted into the end of the protective sleeve (50), the connecting seat is connected to the clamping component, and the angle between the extension direction of the first hinge shaft (32) and the extension direction of the protective sleeve (50) is adjustable.

7. The partial discharge detection device according to claim 6, characterized in that: A threaded connection shaft (53) is provided on the connection seat, and the first connection portion (30) is sleeved on the threaded connection shaft (53) so that the first connection portion (30) can rotate around the threaded connection shaft (53) relative to the protective sleeve (50) to adjust the angle between the extension direction of the first hinge shaft (32) and the extension direction of the protective sleeve (50).

8. The partial discharge detection device according to claim 7, characterized in that: The connection seat also includes a connection plate (43), the connection plate (43) is connected to the connection column (41), the connection column (41) extends along the extension direction of the transmission rod (20), and the threaded connection shaft (53) is arranged on the connection plate (43).

9. The partial discharge detection device according to claim 8, characterized in that: A limiting protrusion (46) is provided on the connecting plate (43), and a plurality of limiting grooves (45) are provided on the first connecting portion (30) along the circumferential direction of the threaded connecting shaft (53). The limiting grooves (45) and the limiting protrusion (46) are matched with each other so as to limit the clamping component by clamping and connecting the limiting protrusion (46) and any one of the plurality of limiting grooves (45).

10. The partial discharge detection device according to claim 8, characterized in that: The partial discharge detection device further comprises a fastener (60), wherein the fastener (60) is sleeved on the threaded connection shaft (53), and the fastener (60) abuts against an end surface of the first connection portion (30) away from the connection plate (43) to limit the position of the first connection portion (30).

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