Medium-voltage plug test tool

Abstract

The utility model belongs to the technical field of cable accessories, in particular to a medium-voltage plug test tool, which comprises an insulating cylinder, a socket and a wire outlet rod, and is characterized in that the socket is arranged in an inner cavity of the insulating cylinder; one end of the wire outlet rod extends into the insulating cylinder and is connected with the top end of the socket, and the other end of the wire outlet rod is exposed out of the insulating cylinder; the insulating cylinder comprises a cylinder body. Two ends of the cylinder body are respectively provided with an upper cover and a bottom cover. A through hole is formed in the upper cover, the wire outlet rod penetrates through the through hole, a flange plate is arranged on the side, located on the bottom cover, in the insulating cylinder, and the bottom end of the socket is fixedly connected to the flange plate; insulating sealant is arranged between the outer surface of the socket and the inner wall of the insulating cylinder. The medium-voltage plug test tool provided by the utility model can be suitable for performing electrical performance test on cable accessory products with short insulation creepage distance, and EICR-8016 type insulation paste with excellent insulation performance is selected and adopted, so that the overall size of the test device can be set to be smaller.

Description

Technical Field

[0001] The utility model relates to the technical field of cable accessories, in particular to a medium-voltage plug and unplug test tool. Background Art

[0002] Creepage distance is the shortest path between two conductive parts or between a conductive part and the protective interface of the equipment, measured along the insulating surface. It is affected by multiple factors, including voltage level, environmental conditions, degree of contamination, altitude, etc. Some cable accessory products whose creepage distance meets the standard requirements can be directly tested for electrical performance in the air. However, some cable accessory products with shorter creepage distances may suffer from creepage and breakdown failures if they are directly exposed to the air for related tests. Therefore, this application designs a test fixture that can be used for electrical performance testing of cable accessory products with shorter creepage distances. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a medium voltage plug and unplug test fixture, which can be used to perform electrical performance tests on cable accessories with short insulation creepage distances; and the entire test fixture is small in size and easy to use.

[0004] The technical solution of the utility model is: a medium-voltage plug and unplug test tool, comprising an insulating cylinder, a socket and a wire outlet rod, wherein the socket is arranged in the inner cavity of the insulating cylinder; one end of the wire outlet rod extends into the interior of the insulating cylinder and is connected to the top of the socket, and the other end of the wire outlet rod is exposed outside the insulating cylinder; the insulating cylinder comprises a cylinder body, and an upper cover and a bottom cover are respectively provided at both ends of the cylinder body; a through hole is provided on the upper cover, and the wire outlet rod passes through the through hole; a flange plate is provided on one side of the bottom cover in the insulating cylinder, and the bottom end of the socket is fixedly connected to the flange plate; an insulating sealant is provided between the outer surface of the socket and the inner wall of the insulating cylinder.

[0005] Furthermore, the end of the outlet rod exposed outside the insulating tube is provided with a thread. The thread facilitates connection of the outlet rod with relevant hardware. Preferably, a threaded sleeve can be provided at the threaded structure of the outlet rod to protect the end of the outlet rod.

[0006] Furthermore, the upper cover and the bottom cover are both sealed to the cylinder, so that the interior of the cylinder has good airtightness.

[0007] Furthermore, a heat shrink tube is provided on the outer side of the cylinder, and the heat shrink tube is used to fill the gap between the surface of the cylinder and the upper cover and the bottom cover to ensure sealing and improve insulation performance.

[0008] Furthermore, a heat shrink tube may also be provided on the outlet rod.

[0009] Furthermore, the socket and the flange plate are fixed by screws.

[0010] Furthermore, a sealing groove is provided at the bottom end of the socket, in which a sealing ring is installed, thereby ensuring the airtightness of the insulating tube.

[0011] Furthermore, the insulating cylinder is cylindrical, and the socket is frustum-shaped. The top of the socket is connected to the outlet rod, the bottom end is connected to the flange plate, and the bottom end is adapted to the inner diameter of the cylinder. Preferably, the bottom end of the socket is the same as the inner diameter of the cylinder, so as to facilitate close fit at the connection between the two to ensure sealing.

[0012] Furthermore, the socket includes an insulating portion and a conductive member, and when in use, the outlet rod and the sample to be tested are both connected to the conductive member.

[0013] Furthermore, the model of the insulating sealant is EICR-8016 (the sealant is produced by Changlan Technology Group Co., Ltd.).

[0014] Furthermore, a glue filling port is provided on the insulating cylinder for filling insulating sealant into the inner cavity of the cylinder. A sealing soft glue is provided in the gap between the insulating cylinder and the flange plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the medium-voltage plug and unplug test fixture in this application can be used to conduct electrical performance tests on cable accessories with a short insulation creepage distance, and is compact in size; by using EICR-8016 insulating glue with excellent insulation performance, the overall size of the test fixture can be set smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the utility model;

[0017] Figure 2 It is an exploded schematic diagram of an embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of an embodiment of the present utility model;

[0019] Figure 4 yes Figure 3 A magnified schematic diagram of part A;

[0020] Figure 5 yes Figure 3 An enlarged schematic diagram of part B;

[0021] In the figure: 1-cylinder, 2-upper cover, 3-bottom cover, 4-outlet rod, 5-socket, 6-flange plate, 7-screw, 8-threaded sleeve, 9-nut, 10-gasket, 11-insulating sealant, 12-heat shrink tube, 13-sealing groove. DETAILED DESCRIPTION

[0022] The present invention will be further described in detail below with reference to specific embodiments. Methods or functional components not specifically described in the embodiments are all prior art. Unless otherwise defined, all technical terms and scientific terms used in this document have the same meanings as those generally understood by technicians in this technical field.

[0023] Example

[0024] like Figure 1-5 As shown, a medium-voltage plug test fixture includes an insulating cylinder, a socket 5 and a wire-outlet rod 4, wherein the socket 5 is arranged in the inner cavity of the insulating cylinder; one end of the wire-outlet rod 4 extends into the interior of the insulating cylinder and is connected to the top of the socket 5, and the other end of the wire-outlet rod 4 is exposed outside the insulating cylinder; the insulating cylinder includes a cylinder body 1, and an upper cover 2 and a bottom cover 3 are respectively provided at both ends of the cylinder body 1; a through hole is provided on the upper cover 2, and the wire-outlet rod 4 passes through the through hole, and the wire-outlet rod 4 fits tightly with the through hole to ensure good sealing. A flange plate 6 is provided at one end of the bottom cover 3 in the insulating cylinder, and the bottom end of the socket 5 is fixedly connected to the flange plate 6; an insulating sealant 11 is filled between the outer surface of the socket 5 and the inner wall of the insulating cylinder.

[0025] In this embodiment, the end of the outlet rod 4, exposed outside the insulating barrel, is threaded. This thread facilitates connection between the outlet rod 4 and the hardware. A nut 9 and a gasket 10 are provided at the junction of the outlet rod 4 and the upper cover 2, ensuring a tight and airtight connection between the two. A threaded sleeve 8 is also provided at the end of the outlet rod 4 to protect the end of the outlet rod 4.

[0026] In this embodiment, both the upper cover 2 and the bottom cover 3 are hermetically connected to the cylinder 1, ensuring good airtightness within the cylinder 1. A heat shrink tubing 12 is provided on the outside of the cylinder 1 to fill the gap between the surface of the cylinder 1 and the upper and bottom covers 2 and 3, ensuring sealing and improving insulation performance. Heat shrink tubing 12 may also be provided on the outlet rod 4.

[0027] In this embodiment, the socket 5 is secured to the flange plate 6 via hexagon socket head screws 7. A sealing groove 13 is provided at the bottom end of the socket 5, in which a sealing ring is installed. The sealing ring seals the socket 5 against the flange plate 6 to ensure airtightness. Specifically, the insulating cylinder is cylindrical, and the socket 5 is frustum-shaped. The top end of the socket 5 is connected to the outlet rod 4, and the bottom end is connected to the flange plate 6, with the bottom end being adapted to the inner diameter of the cylinder 1. The socket 5 includes an insulating portion and a conductive member, to which the outlet rod 4 and the sample to be tested are both connected.

[0028] In this embodiment, the insulating sealant 11 is of model EICR-8016. A filling port is provided on the insulating cylinder, and the insulating sealant 11 is poured into the inner cavity of the cylinder body 1 from the filling port.

[0029] The installation and use process of the medium-voltage plug test tool in this embodiment is as follows: first install the main structure of the tool, such as the insulating cylinder socket 5, and then test the air tightness of the insulating cylinder. After passing the test, glue is poured. After glue pouring, the cable accessory to be tested can be installed and connected to the tool from the bottom end of the socket 5, and relevant electrical performance tests are carried out. After the test is completed, the current cable accessory is removed, and the tool can continue to test the next cable accessory to be tested.

[0030] The above are only some embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have combinations and variations of the aforementioned technical features. Without departing from the spirit and scope of the present invention, those skilled in the art can improve, modify, or replace the present invention with equivalents, or apply the structure or method of the present invention to other fields to achieve the same effect, which all fall within the scope of protection included in the present invention.

Claims

1. A medium voltage plug test fixture, characterized by: The invention comprises an insulating cylinder, a socket and a wire-outlet rod, wherein the socket is arranged in the inner cavity of the insulating cylinder; one end of the wire-outlet rod extends into the interior of the insulating cylinder and is connected to the top end of the socket, and the other end of the wire-outlet rod is exposed outside the insulating cylinder; the insulating cylinder comprises a cylinder body, and an upper cover and a bottom cover are respectively provided at both ends of the cylinder body; a through hole is provided on the upper cover, and the wire-outlet rod passes through the through hole; a flange plate is provided on one side of the bottom cover in the insulating cylinder, and the bottom end of the socket is fixedly connected to the flange plate; an insulating sealant is provided between the outer surface of the socket and the inner wall of the insulating cylinder.

2. The medium voltage plug test fixture according to claim 1, characterized in that: The end of the outlet rod exposed outside the insulating cylinder is provided with a thread.

3. The medium voltage plug test fixture according to claim 1, characterized in that: The upper cover and the bottom cover are both sealed with the cylinder.

4. The medium voltage plug test fixture according to claim 1, characterized in that: The outer side of the cylinder is sleeved with a heat shrink tube, which fills the gap between the surface of the cylinder and the upper cover and the bottom cover to ensure sealing.

5. The medium voltage plug test fixture according to claim 1, characterized in that: A heat shrink tube is provided on the outlet rod.

6. The medium voltage plug test fixture according to claim 1, characterized in that: The socket and the flange plate are fixed by screws.

7. The medium voltage plug test fixture according to claim 1, characterized in that: A sealing groove is provided at the bottom end of the socket, and a sealing ring is installed in the sealing groove.

8. The medium voltage plug test fixture according to claim 1, characterized in that: The insulating cylinder is cylindrical, the socket is frustum-shaped, the top end is connected to the outlet rod, the bottom end is connected to the flange plate, and the bottom end is adapted to the inner diameter of the cylinder.

9. The medium voltage plug test fixture according to claim 1, characterized in that: The socket comprises an insulating portion and a conductive member, and the outlet rod and the sample to be tested are both connected to the conductive member.

10. The medium voltage plug test fixture according to claim 1, characterized in that: The model of the insulating sealant is EICR-8016.

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