CN212255537U

CN212255537U - Power cable progressive breakdown test device

Info

Publication number: CN212255537U
Application number: CN201821714512.4U
Authority: CN
Inventors: 龚进宏; 张驰
Original assignee: Shaanxi Xiecheng Testing Technology Co ltd
Current assignee: Shaanxi Xiecheng Testing Technology Co ltd
Priority date: 2018-10-23
Filing date: 2018-10-23
Publication date: 2020-12-29
Anticipated expiration: 2028-10-23

Abstract

The utility model discloses a power cable punctures test device step by step, including the metallic tank, the inside insulating gas cabin that is provided with of metallic tank, two sets of oil gas isolation cabins are installed to the symmetry in the insulating gas cabin, and are two sets of install cable clamp between the oil gas isolation cabin, and are two sets of the inside activity of oil gas isolation cabin is provided with oil paper type stress cone, and is two sets of oil paper type stress cone passes through cable junction and cable both ends and cable clamp swing joint, and is two sets of oil gas isolation cabin bottom is connected with the oil tank through communicating pipe respectively, there is second rubber piston through compression spring mounting in the communicating pipe, the inside activity of oil tank is provided with first rubber piston, first rubber piston rotates through the push rod and is connected with the push handle, push handle and oil tank opening threaded connection. The utility model discloses a passing through communicating pipe and oil gas isolation cabin fixed connection at metal can internally mounted oil tank and oil tank, it is more convenient that oil gas isolation cabin fills and takes out insulating oil during the experiment.

Description

Power cable progressive breakdown test device

Technical Field

The utility model belongs to the technical field of cable test equipment, concretely relates to power cable punctures test device step by step.

Background

After the power cables are produced in batches, the cables need to be subjected to a step-by-step breakdown test to detect whether the cables meet the national standard.

For example, chinese patent application No. CN201510014369.2 discloses an integrated terminal device for a power cable step-by-step breakdown test, which includes: the cable connecting clamp comprises two chucks which are used for clamping two ends of a cable respectively; the high-voltage leading-out rod is connected with the cable connecting clamp and is used for applying test voltage to two ends of the cable; the shell is internally provided with an insulating assembly which comprises a high-voltage sleeve used for accommodating a high-voltage leading-out rod, a metal can used for accommodating a cable connecting clamp and used for cable penetration; and the cable heating component is connected with the cable and used for heating the cable. Compared with the prior art, the invention adopts the mode that the cable connecting clamp clamps two ends of the cable respectively, so that the cable conductor is closed in the terminal, the equipment is simplified, and the heating and voltage applying connection is more convenient and reliable.

The device has the following problems in the using process, in each test, after the oilpaper type stress cone is installed on the metal tank, insulating oil needs to be filled in the oil-gas isolation cabin, and after the test is finished, the insulating oil is taken out, so that the repeated operation is carried out, and the time is wasted.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a power cable punctures test device step by step to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a power cable punctures test device step by step, includes the metallic tank, the inside insulating gas cabin that is provided with of metallic tank, two sets of oil gas isolation cabins are installed to the symmetry in the insulating gas cabin, and are two sets of install cable clamp between the oil gas isolation cabin, and are two sets of the inside activity of oil gas isolation cabin is provided with oil paper type stress cone, and is two sets of oil paper type stress cone passes through cable junction and cable both ends and cable clamp swing joint, and is two sets of oil gas isolation cabin bottom is connected with the oil tank through communicating pipe respectively, the cross-section of communicating pipe is well style of calligraphy, there is second rubber piston through compression spring in the communicating pipe, the inside activity of oil tank is provided with first rubber piston, first rubber piston rotates through the push rod and is connected with the push handle, push handle and.

In this setting at metal can internally mounted oil tank, and pass through the oil tank and be connected with the oil gas isolation cabin through communicating pipe for it is more convenient to fill insulating oil to the oil gas isolation cabin, and insulating oil can be stored in the oil tank simultaneously, facilitates the use.

Preferably, the middle part of the cable clamp is provided with a high-voltage leading-out rod, the high-voltage leading-out rod extends into the high-voltage sleeve, the high-voltage sleeve is installed in the middle of the metal can, and the upper end of the high-voltage sleeve is provided with a high-voltage shielding cover.

Preferably, the two groups of oil paper type stress cones are arranged in the oil-gas isolation cabin through sealing covers.

Preferably, the bottom of the compression spring is fixedly connected with the communicating pipe, and the upper end of the compression spring is fixedly connected with the second rubber piston.

Preferably, the push handle is rotatably arranged with the push rod through a bearing.

This setting pushes away handle and push rod and passes through the bearing rotation setting for push away the handle when threaded connection is at the oil tank opening part, first rubber piston can not follow the rotation, avoids insulating oil to leak.

Drawings

Fig. 1 is a schematic view of the structure of the utility model;

FIG. 2 is an enlarged view of the point A in FIG. 1.

In the figure: the device comprises a metal tank 1, a high-voltage sleeve 2, a high-voltage shielding cover 3, a high-voltage leading-out rod 4, a cable clamp 5, an insulating gas cabin 6, an oil-gas isolation cabin 7, an oil-paper type stress cone 8, a cable 9, a sealing cover 10, an oil tank 11, a push handle 12, a first rubber piston 13, a push rod 14, a bearing 15, a communicating pipe 16, a compression spring 17 and a second rubber piston 18.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a power cable progressive breakdown testing device as shown in figure 1-2, which comprises a metal can 1, wherein an insulating gas cabin 6 is arranged inside the metal can 1, two groups of oil-gas isolation cabins 7 are symmetrically arranged in the insulating gas cabin 6, a cable clamp 5 is arranged between the two groups of oil-gas isolation cabins 7, two groups of oil-paper type stress cones 8 are movably arranged inside the oil-gas isolation cabins 7, the two groups of oil-paper type stress cones 8 are connected through a cable 9, two ends of the cable 9 are movably connected with the cable clamp 5, the bottoms of the two groups of oil-gas isolation cabins 7 are respectively connected with an oil tank 11 through a communicating pipe 16, the section of the communicating pipe 16 is in a middle shape, a second rubber piston 18 is arranged in the communicating pipe 16 through a compression spring 17, a first rubber piston 13 is movably arranged inside the oil tank 11, the first rubber piston 13 is rotatably connected with a push, the push handle 12 is in threaded connection with an opening of the oil tank 11.

Specifically, 5 middle parts of cable clamp are provided with high pressure and draw forth pole 4 and extend to inside high-voltage bushing 2, high-voltage bushing 2 is installed in 1 middle part of metallic tank, high-voltage shield 3 is installed to high-voltage bushing 2 upper end.

Specifically, two groups of the oil paper type stress cones 8 are arranged in the oil-gas isolation cabin 7 through a sealing cover 10.

Specifically, the bottom of the compression spring 17 is fixedly connected with the communicating pipe 16, and the upper end of the compression spring 17 is fixedly connected with the second rubber piston 18.

Specifically, the push handle 12 is rotatably disposed with the push rod 14 through a bearing 15.

When the utility model is used, on the basis of the use of the invention patent (application number: CN201510014369.2), when insulating oil is added into the oil-gas isolation cabin 7, the first rubber piston 13 is firstly pulled out from the oil tank 11, then the insulating oil is added into the oil tank 11, then the first rubber piston 13 is inserted into the oil tank 11, the push handle 12 is utilized to push the first rubber piston 13 to move towards the inside of the oil tank 11, the insulating oil added into the oil tank 11 generates pressure on the second rubber piston 18, so that the first rubber piston 18 moves into the oil-gas isolation cabin 7, meanwhile, the insulating oil enters the oil-gas isolation cabin 7, then the sealing cover 10 is covered, and the push handle 12 is in threaded connection with the opening of the oil tank 11, thus the test can be carried out; after the experiment is finished, the sealing cover 10 is opened, the push rod 12 is pulled, the first rubber piston 18 moves to the middle of the communicating pipe 16, meanwhile, the insulating oil is recycled into the oil tank 11, then the communicating pipe 16 is blocked again by the first rubber piston 18 under the action of the compression spring 17, the insulating oil cannot enter the oil-gas isolation cabin 7, and the oilpaper type stress cone 8 can be taken out; the utility model discloses an at 1 internally mounted oil tank 11 of metal can, and be connected with oil gas isolation cabin 7 through communicating pipe 16 through oil tank 11 for it is more convenient to fill insulating oil to oil gas isolation cabin 7, and insulating oil can be stored in oil tank 11 simultaneously, facilitates the use.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. The utility model provides a power cable punctures test device step by step, includes metallic tank (1), its characterized in that: the oil-gas separation device is characterized in that an insulating gas cabin (6) is arranged in the metal tank (1), two groups of oil-gas separation cabins (7) are symmetrically arranged in the insulating gas cabin (6), a cable clamp (5) is arranged between the oil-gas separation cabins (7), two groups of oil-paper type stress cones (8) are movably arranged in the oil-gas separation cabins (7), the oil-paper type stress cones (8) are connected through cables (9), two ends of each cable (9) are movably connected with the cable clamp (5), the bottoms of the oil-gas separation cabins (7) are respectively connected with an oil tank (11) through communicating pipes (16), the cross section of each communicating pipe (16) is in a middle shape, second rubber pistons (18) are arranged in the communicating pipes (16) through compression springs (17), first rubber pistons (13) are movably arranged in the oil tanks (11), the first rubber pistons (13) are rotatably connected with push handles (12) through push rods (14), the push handle (12) is in threaded connection with an opening of the oil tank (11).

2. The progressive breakdown testing device for the power cable according to claim 1, wherein: the high-voltage shielding device is characterized in that a high-voltage leading-out rod (4) is arranged in the middle of the cable clamp (5), the high-voltage leading-out rod (4) extends to the inside of the high-voltage bushing (2), the high-voltage bushing (2) is installed in the middle of the metal tank (1), and a high-voltage shielding cover (3) is installed at the upper end of the high-voltage bushing (2).

3. The progressive breakdown testing device for the power cable according to claim 1, wherein: the two groups of oil paper type stress cones (8) are arranged in the oil-gas isolation cabin (7) through sealing covers (10).

4. The progressive breakdown testing device for the power cable according to claim 1, wherein: the bottom of the compression spring (17) is fixedly connected with the communicating pipe (16), and the upper end of the compression spring (17) is fixedly connected with the second rubber piston (18).

5. The progressive breakdown testing device for the power cable according to claim 1, wherein: the push handle (12) is rotatably arranged with the push rod (14) through a bearing (15).