CN217425585U - A high-voltage cable withstand voltage test tool - Google Patents

Abstract

The utility model relates to a high-voltage cable withstand voltage test tool, which comprises a sealing box body and a high-voltage sleeve for connecting a cable plug-in head; the sealing box is externally connected to an inflation device, and the high-voltage sleeve is sealed and connected to the sealing box; the high-voltage sleeve The upper end of the pipe is provided with an installation hole for the installation of the arc-extinguishing rod of the cable plug-in head. The beneficial effect of the utility model is that the plug-in head of the high-voltage cable is directly connected to the high-voltage sleeve of the tooling, which solves the problem of plugging the high-voltage cable. The problem of plugging and wiring when the head is connected, the withstand voltage test can be completed simply, quickly and reliably, which greatly guarantees the safety of people and equipment; it replaces the operator to directly test the high-voltage cable with the plug and use the test. The tooling directly simulates the actual equipment conditions for construction operations.

Description

A high-voltage cable withstand voltage test tool

technical field

The utility model relates to the technical field of electric equipment, in particular to a high-voltage cable withstand voltage test tool.

Background technique

In the transmission and distribution system, the laying of high-voltage cables is a crucial part. After the high-voltage cable is laid, it is necessary to carry out a withstand voltage test on the cable and the cable terminal. The main purpose of the test is to detect whether there is any damage to the insulation during the laying process, whether the cable terminal is qualified, and to verify the eligibility of the factory test. High-voltage cables with pluggable cable heads are widely used in power distribution systems, including SF ₆ (sulfur hexafluoride) ring network cabinets, box-type substations, and high-voltage cable branch boxes. Because the plug head of the high-voltage cable is a cavity structure, there must be no scratches and impurities during the production and installation process. If the insulation gap is not guaranteed, creepage is likely to occur during the test and use, and even the insulation layer is broken down. In the process of withstand voltage test, when the test is performed directly, the plug and unplug of the high-voltage cable are not easy to be blocked and difficult to connect, which has a great impact on the safety of people and equipment.

Utility model content

The technical problem to be solved by the utility model is to provide a high-voltage cable withstand voltage test tool to overcome the above-mentioned deficiencies in the prior art.

The technical solution of the utility model to solve the above-mentioned technical problems is as follows: a high-voltage cable withstand voltage test tool, including a sealed box body and a high-voltage sleeve for connecting the cable plug-in head; the sealed box is connected to an external inflation device, and the high-voltage sleeve is sealed and connected On the sealed box body; the upper end of the high-voltage bushing is provided with a mounting hole for the installation of the arc-extinguishing insert rod of the cable plug-in head.

The beneficial effect of the utility model is that the plug-in head of the high-voltage cable is directly connected to the high-voltage sleeve of the tooling, which solves the problems of blocking and wiring when the plug-in head of the high-voltage cable is connected, and the pressure resistance is completed simply, quickly and reliably. The test provides great protection for personal and equipment safety; instead of the operator directly testing the high-voltage cable with plug-in head, the test tool is used to directly simulate the actual equipment working conditions for construction operations.

On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, it also includes a casing pressure plate, the casing pressure plate is sleeved on the high-voltage casing, and is detachably connected with the sealing box.

Further, the middle part of the high-voltage casing is provided with a skirt extending outward, the skirt is arranged above the sealing box, and the lower end face of the skirt is in contact with the upper end face of the sealing box, and the casing pressure plate is sleeved above the skirt; the casing; The pressing plate is detachably connected with the sealing box through bolts.

Further, an inflation valve is provided on the sealing box, and the inflation valve is detachably connected to an external inflation device.

Further, at least two high-voltage bushings are provided.

Further, the sealed box is made of stainless steel.

Description of drawings

Fig. 1 is the structural representation one of the utility model;

Fig. 2 is the structural representation two of the utility model;

Fig. 3 is the structural representation three of the utility model;

Fig. 4 is the sectional structure schematic diagram of the utility model;

FIG. 5 is a schematic diagram of the structure of the utility model in use state.

In the accompanying drawings, the list of components represented by each number is as follows:

1. Sealed box, 11. Inflatable valve, 2. High-pressure casing, 21. Skirt, 22. Mounting hole, 3. Casing pressure plate, 4. Plug and pull head.

Detailed ways

The principles and features of the present invention will be described below with reference to the accompanying drawings, and the examples are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Embodiment 1, as shown in Figures 1 to 5, a high-voltage cable withstand voltage test tool, including a sealed box 1 and a high-voltage sleeve 2 for connecting plug-in cable heads; The sleeve 2 is sealed and connected to the sealing box 1; the upper end of the high-voltage sleeve 2 is provided with an installation hole 22 for installing the arc-extinguishing insertion rod of the cable plug-in head.

The plug head 4 of the high voltage cable is directly connected to the high voltage sleeve 2 of the tooling, which solves the problem of blocking and wiring when the plug head 4 of the high voltage cable is connected, and the withstand voltage test can be completed simply, quickly and reliably. The safety of the equipment is greatly guaranteed; instead of the operator to directly test the high-voltage cable with the plug-in head 4, the test tool is used to directly simulate the actual equipment working conditions for construction operations; in the specific implementation process, SF inflatable equipment is used to seal the box. The body 1 is filled with SF gas to make its internal SF gas pressure reach 1.2bar-1.4bar. The purpose of filling with SF gas is to enhance its external insulation strength.

Embodiment 2, as shown in FIGS. 1 to 5 , this embodiment is a further improvement on the basis of Embodiment 1, and the details are as follows:

It also includes a casing pressure plate 3, the casing pressure plate 3 is sleeved on the high-voltage casing 2, and is detachably connected with the sealing box 1, and the casing pressure plate 3 plays a fixed role on the high-voltage casing 2 to prevent the high-voltage casing 2 from loosening. ,leakage.

Embodiment 3, as shown in FIGS. 1 to 5 , this embodiment is a further improvement on the basis of Embodiment 2, and the details are as follows:

A skirt 21 extends outward from the middle of the high-voltage casing 2. The skirt 21 is arranged above the sealing box 1, and the lower end face of the skirt 21 is in contact with the upper end face of the sealing box 1. The casing pressure plate 3 is sleeved on the skirt. Above the side 21; the casing pressing plate 3 is detachably connected to the sealing box 1 through bolts.

The skirt edge 21 is pressed by the casing pressing plate 3, so that the high-voltage casing 2 is fixed, and the fixing effect is better.

Embodiment 4, as shown in FIGS. 1 to 5 , this embodiment is a further improvement on the basis of Embodiment 1, and the details are as follows:

The sealing box 1 is provided with an inflation valve 11, and the inflation valve 11 is detachably connected to an external inflation device to facilitate carrying and disassembly; in the specific implementation process, the inflation valve 11 can be connected to an external air pressure gauge to monitor the internal gas pressure. When the gas pressure in the sealed box 1 is insufficient, the gas should be replenished in time.

Embodiment 5, as shown in FIGS. 1 to 5 , this embodiment is a further improvement on the basis of Embodiment 1, and the details are as follows:

There are at least two high-voltage bushings 2, so as to carry out pressure-resistance experiments on multiple high-voltage cables at the same time.

Embodiment 6, as shown in FIGS. 1 to 5 , this embodiment is a further improvement on the basis of any of Embodiments 1 to 5, and the details are as follows:

The sealed box 1 is made of stainless steel, which will not rust, is more resistant to high pressure and has a longer service life.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations of the present invention, and those of ordinary skill in the art are within the scope of the present invention Variations, modifications, substitutions and variations can be made to the above-described embodiments.

Claims (6)

1. A high-voltage cable pressure test tool is characterized by comprising a sealing box body (1) and a high-voltage sleeve (2) used for connecting a cable plug head; the sealed box body (1) is externally connected with an inflating device, and the high-voltage sleeve (2) is connected to the sealed box body (1) in a sealing mode; and the upper end of the high-voltage sleeve (2) is provided with a mounting hole (22) for mounting an arc extinguishing insertion rod of the cable insertion head.

2. The high-voltage cable pressure-resistant test tool according to claim 1, further comprising a sleeve pressing plate (3), wherein the sleeve pressing plate (3) is sleeved on the high-voltage sleeve (2) and detachably connected with the sealing box body (1).

3. The high-voltage cable pressure test tool according to claim 2, wherein a skirt (21) extends outwards from the middle of the high-voltage sleeve (2), the skirt (21) is arranged above the sealing box body (1), the lower end face of the skirt (21) abuts against the upper end face of the sealing box body (1), and the sleeve pressing plate (3) is sleeved above the skirt (21); the sleeve pressing plate (3) is detachably connected with the sealing box body (1) through bolts.

4. The high-voltage cable withstand voltage test tool according to claim 1, wherein an inflation valve (11) is arranged on the sealing box body (1), and the inflation valve (11) is detachably connected with external inflation equipment.

5. The high-voltage cable withstand voltage test tool according to claim 1, wherein at least two high-voltage bushings (2) are arranged.

6. The high-voltage cable withstand voltage test tool according to any one of claims 1 to 5, wherein the sealing box body (1) is made of stainless steel.

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