Coupling capacitor

Abstract

The utility model discloses a coupling capacitor, which relates to the technical field of partial discharge test equipment, and comprises a support assembly, a control assembly, a connection assembly and a coupling assembly which are arranged in sequence, the control assembly is arranged between the support assembly and the connection assembly and is fixedly connected with the support assembly and the connection assembly, and is used for carrying out voltage division processing on partial discharge signals; and the coupling group is arranged on the other side, opposite to the control assembly, of the connecting assembly and is fixedly connected with the connecting assembly. According to the utility model, through a one-type connection structure, a partial discharge signal is input from one end of the coupling capacitor, is coupled through the coupling capacitor, is processed in the circuit board, and is output from the joint, and the structure is simple, and high voltage resistance and anti-interference performance are strong.

Description

Technical Field

[0001] This utility model relates to the field of partial discharge testing equipment technology, and more specifically to the field of coupling capacitor technology. Background Technology

[0002] Partial discharge refers to the electrical breakdown that occurs in localized areas of an insulation system, which may be caused by defects, contamination, or other problems. Capacitors play an important role in partial discharge detection and are widely used in partial discharge detection systems.

[0003] In recent years, the partial discharge pulse current detection method has been widely used in the field of power equipment health monitoring. This method introduces a pulse current to excite potential partial discharge phenomena and then monitors the partial discharge signal to achieve early fault detection of the equipment. In this process, the coupling capacitor plays an important role in transmitting the pulse current and the signal generated by the partial discharge.

[0004] However, the coupling capacitors currently in use may suffer energy loss during signal transmission, have poor anti-interference performance, lead to attenuation of partial discharge signals, reduce detection sensitivity, and have complex structures and high costs, resulting in size and cost challenges when used on a large scale. Utility Model Content

[0005] The purpose of this invention is to provide a coupling capacitor in order to solve the technical problems of complex structure and poor anti-interference performance of existing coupling capacitors.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] This utility model provides a coupling capacitor, including a support component, a control component, a connection component, and a coupling component arranged sequentially. The control component is disposed between the support component and the connection component and is fixedly connected, and is used to perform voltage division processing on partial discharge signals. The coupling component is disposed on the other side of the connection component opposite to the control component and is fixedly connected.

[0008] In one embodiment, the connection assembly includes a connection body, an annular connector, and a connector. The connection body is fixedly disposed on the support assembly. One end of the connection body is connected to the control assembly, and the other end is connected to the coupling assembly. The annular connector is sleeved on the coupling assembly and is fixedly connected to the connection body.

[0009] In one embodiment, the connecting body is a hollow cylindrical structure, and a groove for installing the coupling component is provided at the connection point between the connecting body and the coupling component.

[0010] In one embodiment, the side of the connecting body is provided with a first connecting hole for connecting with the connector.

[0011] In one embodiment, the coupling assembly includes a capacitive coupler and a first screw; the annular connector is sleeved on one end of the capacitive coupler and located within the groove, and the first screw is located at the other end of the capacitive coupler.

[0012] In one embodiment, the capacitive coupling is a hollow cylindrical structure, and a second connection hole is provided at the connection point between the capacitive coupling and the first screw;

[0013] The cylindrical surface of the capacitive coupler is provided with an annular groove for engaging with the annular connector.

[0014] In one embodiment, the annular connector includes a semi-annular plate and a first connecting bolt. The semi-annular plate is symmetrically arranged and embedded in the capacitive coupler, and the first connecting bolt is disposed on the semi-annular plate and fixedly connected to the connecting body.

[0015] In one embodiment, the first connecting bolt includes a spring washer and a second screw, the second screw passing through the spring washer and the semi-circular plate and being threaded into the connecting body.

[0016] In one embodiment, the support component includes a base and a second connecting bolt, the base being fixedly connected to the connecting component via the second connecting bolt.

[0017] In one embodiment, the control component includes a circuit board and third connecting bolts, the circuit board being fixedly connected to the connecting body by the third connecting bolts located at the four corners.

[0018] The beneficial effects of this utility model are as follows:

[0019] This utility model uses a one-piece connection structure. The partial discharge signal is input from one end of the coupling capacitor, coupled by the coupling capacitor, and processed in the circuit board before being output from the connector. The structure is simple, and it has strong high voltage resistance and anti-interference performance. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1This is the front view of the present utility model;

[0022] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0023] Reference numerals: 1-Support component; 2-Control component; 3-Connection component; 4-Coupled component; 5-Connecting body; 6-Annular connector; 7-Connector; 8-Groove; 9-First connection hole; 10-Capacitor coupler; 11-First screw; 12-Second connection hole; 13-Annular groove; 14-Semi-annular plate; 15-First connection bolt; 16-Spring washer; 17-Second screw; 18-Base; 19-Second connection bolt; 20-Circuit board; 21-Third connection bolt. Detailed Implementation

[0024] To make the technical problems, technical solutions, and technical effects of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0027] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Example 1

[0029] like Figures 1 to 2As shown, this embodiment provides a coupling capacitor, including a support component 1, a control component 2, a connection component 3, and a coupling component 4 arranged sequentially. The control component 2 is disposed between the support component 1 and the connection component 3 and is fixedly connected, and is used to perform voltage division processing on partial discharge signals. The coupling component is disposed on the other side of the connection component 3 opposite to the control component 2 and is fixedly connected.

[0030] Specifically, the support component 1, control component 2, connection component 3 and coupling component 4 are connected in one way. The partial discharge signal is input from one end of the coupling capacitor, coupled by the coupling capacitor and processed in the circuit board, and then output from the connector. The structure is simple, and it has strong high voltage resistance and anti-interference performance.

[0031] Example 2

[0032] like Figures 1 to 2 As shown, this embodiment provides a coupling capacitor, including a support component 1, a control component 2, a connection component 3, and a coupling component 4 arranged sequentially. The control component 2 is disposed between the support component 1 and the connection component 3 and is fixedly connected, and is used to perform voltage division processing on partial discharge signals. The coupling component is disposed on the other side of the connection component 3 opposite to the control component 2 and is fixedly connected.

[0033] The connecting component 3 includes a connecting body 5, an annular connector 6, and a connector 7. The connecting body 5 is fixedly mounted on the support component 1. One end of the connecting body 5 is connected to the control component 2, and the other end is connected to the coupling component 4. The annular connector 6 is sleeved on the coupling component 4 and is fixedly connected to the connecting body 5.

[0034] The connecting body 5 is a hollow cylindrical structure, and a groove 8 for installing the coupling component 4 is provided at the connection between the connecting body 5 and the coupling component 4.

[0035] The side of the connecting body 5 is provided with a first connecting hole 9 for connecting to the connector 7.

[0036] Example 3

[0037] like Figures 1 to 2 As shown, this embodiment provides a coupling capacitor, including a support component 1, a control component 2, a connection component 3, and a coupling component 4 arranged sequentially. The control component 2 is disposed between the support component 1 and the connection component 3 and is fixedly connected, and is used to perform voltage division processing on partial discharge signals. The coupling component is disposed on the other side of the connection component 3 opposite to the control component 2 and is fixedly connected.

[0038] The connecting component 3 includes a connecting body 5, an annular connector 6, and a connector 7. The connecting body 5 is fixedly mounted on the support component 1. One end of the connecting body 5 is connected to the control component 2, and the other end is connected to the coupling component 4. The annular connector 6 is sleeved on the coupling component 4 and is fixedly connected to the connecting body 5.

[0039] The connecting body 5 is a hollow cylindrical structure, and a groove 8 for installing the coupling component 4 is provided at the connection between the connecting body 5 and the coupling component 4.

[0040] The side of the connecting body 5 is provided with a first connecting hole 9 for connecting to the connector 7.

[0041] The coupling assembly 4 includes a capacitive coupler 10 and a first screw 11; the annular connector 6 is sleeved on one end of the capacitive coupler 10 and located in the groove 8, and the first screw 11 is located at the other end of the capacitive coupler 10.

[0042] The capacitive coupling is a hollow cylindrical structure, and a second connection hole 12 is provided at the connection point between the capacitive coupling and the first screw 11.

[0043] The cylindrical surface of the capacitive coupler 10 is provided with an annular groove 13 for engaging with the annular connector 6.

[0044] Example 4

[0045] This embodiment is a further optimization based on embodiment 3, specifically:

[0046] The annular connector 6 includes a semi-annular plate 14 and a first connecting bolt 15. The semi-annular plate 14 is symmetrically arranged and embedded in the capacitive coupler 10. The first connecting bolt 15 is disposed on the semi-annular plate 14 and fixedly connected to the connecting body 5.

[0047] The first connecting bolt 15 includes a spring washer 16 and a second screw 17, the second screw 17 passing through the spring washer 16 and the semi-annular plate 14, and is threaded into the connecting body 5.

[0048] The support component 1 includes a base 18 and a second connecting bolt 19, wherein the base 18 is fixedly connected to the connecting component 3 via the second connecting bolt 19.

[0049] The control component 2 includes a circuit board 20 and a third connecting bolt 21. The circuit board 20 is fixedly connected to the connecting body 5 by the third connecting bolts 21 located at the four corners.

Claims

1. A coupling capacitor, characterized in that... The system includes a support component (1), a control component (2), a connection component (3), and a coupling component (4) arranged sequentially. The control component (2) is arranged between the support component (1) and the connection component (3) and is fixedly connected to it. It is used to perform voltage division processing on the partial discharge signal. The coupling component is arranged on the other side of the connection component (3) opposite to the control component (2) and is fixedly connected to it.

2. A coupling capacitor according to claim 1, characterized in that, The connecting component (3) includes a connecting body (5), an annular connector (6), and a connector (7). The connecting body (5) is fixedly mounted on the support component (1). One end of the connecting body (5) is connected to the control component (2), and the other end is connected to the coupling component (4). The annular connector (6) is sleeved on the coupling component (4) and fixedly connected to the connecting body (5).

3. A coupling capacitor according to claim 2, characterized in that, The connecting body (5) is a hollow cylindrical structure, and a groove (8) for installing the coupling component (4) is provided at the connection between the connecting body (5) and the coupling component (4).

4. A coupling capacitor according to claim 3, characterized in that, The side of the connecting body (5) is provided with a first connecting hole (9) for connecting to the connector (7).

5. A coupling capacitor according to claim 3, characterized in that, The coupling assembly (4) includes a capacitive coupler (10) and a first screw (11); the annular connector (6) is sleeved on one end of the capacitive coupler (10) and located in the groove (8), and the first screw (11) is located at the other end of the capacitive coupler (10).

6. A coupling capacitor according to claim 5, characterized in that, The capacitor coupler (10) is a hollow cylindrical structure, and a second connection hole (12) is provided at the connection between the capacitor coupler and the first screw (11). The cylindrical surface of the capacitive coupler (10) is provided with an annular groove (13) for engaging with the annular connector (6).

7. A coupling capacitor according to claim 6, characterized in that, The annular connector (6) includes a semi-annular plate (14) and a first connecting bolt (15). The semi-annular plate (14) is symmetrically arranged and embedded on the capacitor coupler (10). The first connecting bolt (15) is arranged on the semi-annular plate (14) and fixedly connected to the connecting body (5).

8. A coupling capacitor according to claim 7, characterized in that, The first connecting bolt (15) includes a spring washer (16) and a second screw (17), the second screw (17) passing through the spring washer (16) and the semi-circular plate (14), and is threaded into the connecting body (5).

9. A coupling capacitor according to claim 2, characterized in that, The support component (1) includes a base (18) and a second connecting bolt (19), wherein the base (18) is fixedly connected to the connecting component (3) by the second connecting bolt (19).

10. A coupling capacitor according to claim 2, characterized in that, The control component (2) includes a circuit board (20) and a third connecting bolt (21), wherein the circuit board (20) is fixedly connected to the connecting body (5) by the third connecting bolt (21) located at the four corners.

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