CN215264522U

CN215264522U - Temperature control system suitable for insulating material breakdown test

Info

Publication number: CN215264522U
Application number: CN202121949927.1U
Authority: CN
Inventors: 曹亮
Original assignee: Southwest University
Current assignee: Southwest University
Priority date: 2021-08-18
Filing date: 2021-08-18
Publication date: 2021-12-21
Anticipated expiration: 2031-08-18

Abstract

The present disclosure discloses a temperature control system suitable for insulation material breakdown test, includes: the heating device comprises a heating cavity, wherein a heater is arranged in one side of the heating cavity, a temperature controller is arranged outside one side of the heating cavity, a first output end and a second output end are arranged on the other side of the heating cavity, and a first temperature sensor and a second temperature sensor are respectively arranged at the first output end and the second output end; the system further comprises: the test chamber, one side of test chamber is provided with first input and second input, first input with the first output in heating chamber is connected, the second input with the second output in heating chamber is connected.

Description

Temperature control system suitable for insulating material breakdown test

Technical Field

The present disclosure relates to temperature control systems, and more particularly to a temperature control system suitable for breakdown test.

Background

In the power industry, the insulating material of power equipment is often required to bear higher electric field strength at different temperatures, for example, the electric field strength in the insulating layer of a crosslinked polyethylene direct current power cable can reach 20-30 kV/mm, and the working temperature can reach 70-90 ℃. As an important parameter required for the design of the insulation structure of the electrical equipment, the breakdown field strength of the insulation material determines the service life of the electrical equipment. Accurate measurement of the breakdown field strength of the insulating material at different temperatures is helpful for research and development of novel insulating materials, guidance of reasonable design of an insulating structure and evaluation of the insulating state of power equipment.

In the process of the breakdown test of the insulating material, the traditional temperature control system adopts an oven to heat an electrode system, and the temperature control mode has the following problems: 1. as the breakdown test usually adopts insulating oil as an environment medium to prevent flashover, the method for heating the oven has low efficiency and higher energy consumption; 2. when insulating materials with high breakdown field strength, large thickness and the like are tested, the required insulation distance is generally larger in order to prevent flashover between a high-voltage line and a shell of an oven. Therefore, in order to improve the efficiency of the breakdown test and save space and energy, it is necessary to develop a novel temperature control system suitable for the breakdown test.

SUMMERY OF THE UTILITY MODEL

To overcome the disadvantages in the prior art, an object of the present disclosure is to provide a temperature control system suitable for a breakdown test, which can be used at a higher voltage and has the characteristics of simple structure, low energy consumption and flexible adjustment of an insulation distance.

In order to achieve the above purpose, the present disclosure provides the following technical solutions:

a temperature control system suitable for use in breakdown testing of an insulating material, the system comprising:

a heating cavity is formed in the heating chamber,

a heater is arranged in one side of the heating cavity,

a temperature controller is arranged outside one side of the heating cavity,

a first output end and a second output end are arranged on the other side of the heating cavity, and a first temperature sensor and a second temperature sensor are respectively arranged at the first output end and the second output end;

the system further comprises:

a test chamber is arranged in the test chamber,

one side of the test cavity is provided with a first input end and a second input end, the first input end is connected with the first output end of the heating cavity, and the second input end is connected with the second output end of the heating cavity.

Preferably, a first oil pump is further arranged at the first output end of the heating cavity, and a second oil pump is further arranged at the second output end of the heating cavity.

Preferably, the first input end and the second output end are connected through a first connecting pipe, and the second input end and the second output end are connected through a second connecting pipe.

Preferably, the first connecting pipe and the second connecting pipe are temperature-resistant and oil-resistant hoses.

Preferably, a first filter is disposed at a first input end of the test chamber and a second filter is disposed at a second input end of the test chamber.

Preferably, an observation window is further arranged on one side of the test cavity adjacent to the side provided with the first input end and the second input end.

Preferably, the bottom of the heating cavity is provided with a support, and the lower end of the support is connected with a first base.

Preferably, the bottom of the test cavity is provided with a liftable support, and the lower end of the liftable support is connected with a second base.

Preferably, a first heat preservation layer is further arranged outside the cavity of the heating cavity.

Preferably, a second insulating layer is further arranged outside the cavity of the testing cavity.

Compared with the prior art, the beneficial effect that this disclosure brought does:

1. the heating efficiency is high;

2. the insulation distance is flexible and adjustable;

3. the operation is simple and convenient, and experimental phenomena can be observed conveniently.

Drawings

Fig. 1 is a schematic structural diagram of a temperature control system suitable for a breakdown test according to an embodiment of the present disclosure;

the reference numbers in the figures are as follows:

1-a temperature controller; 2-a heater; 3-heating the cavity; 4-insulating oil; 5-a first insulating layer; 6-1-a first temperature sensor; 6-2-a second temperature sensor; 7-1-a first oil pump; 7-2-a second oil pump; 8-a pillar; 9-a first base; 10-1-a first connection tube; 10-2-second connecting tube; 11-a test chamber; 12-a second insulating layer; 13-an observation window; 14-1-a first filter; 14-2-a second filter; 15-lifting support columns; 16-second base.

Detailed Description

Specific embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. While specific embodiments of the disclosure are shown in the drawings, it should be understood that the disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

It should be noted that certain terms are used throughout the description and claims to refer to particular components. As one skilled in the art will appreciate, various names may be used to refer to a component. This specification and claims do not intend to distinguish between components that differ in name but not function. In the following description and in the claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description which follows is a preferred embodiment of the disclosure, but is made for the purpose of illustrating the general principles of the disclosure and not for the purpose of limiting the scope of the disclosure. The scope of the present disclosure is to be determined by the terms of the appended claims.

To facilitate an understanding of the embodiments of the present disclosure, the following detailed description is to be considered in conjunction with the accompanying drawings, and the drawings are not to be construed as limiting the embodiments of the present disclosure.

In one embodiment, as shown in fig. 1, the present disclosure provides a temperature control system suitable for use in breakdown testing of an insulating material, the system comprising:

the heating chamber 3 is provided with a heating chamber,

a heater 2 is arranged in one side of the heating cavity 3,

a temperature controller 1 is arranged outside one side of the heating cavity 3,

a first output end and a second output end are arranged on the other side of the heating cavity 3, and a first temperature sensor 6-1 and a second temperature sensor 6-2 are respectively arranged at the first output end and the second output end;

the system further comprises:

the test chamber 11 is provided with a test chamber,

a first input end and a second input end are arranged on one side of the test cavity 11, the first input end is connected with a first output end of the heating cavity 3, and the second input end is connected with a second output end of the heating cavity 3.

The above-mentioned embodiment has constituted the complete technical scheme of this disclosure, and in this scheme, when placing insulating oil 4 in heating chamber 3 in through heater 2 heating and flow into test chamber 11 after reaching predetermined temperature under temperature sensor and temperature controller's effect, insulating oil 4 passes through the filtration purification effect of filter through the oil pump, and circulation flow between heating chamber and test chamber. And finally, the temperature of the test cavity reaches the set temperature under the action of the sensor and the temperature controller.

In the prior art, the oven heats the insulating oil through air, and then the hot air heats the oil in the test cavity. The embodiment heats the oil through the heater, and the link of air heating is omitted, so that the oil heating oven has the characteristic of high heating efficiency, and under the same condition, the scheme of the embodiment saves 0.5-1 hour compared with the heating of a common oven.

In addition, since the oven is to introduce the high voltage wire through the bushing, the insulation distance between the high voltage wire and the oven is limited by the size of the oven. And the test cavity in this embodiment is insulating material, and the distance between heating portion and the high-voltage line can be adjusted through temperature resistant oily hose, and is more nimble.

In another embodiment, a first oil pump 7-1 is further disposed at the first output end of the heating cavity 3, and a second oil pump 7-2 is further disposed at the second output end of the heating cavity 3.

In this embodiment, it is necessary to make hot oil flow between the heating chamber and the test chamber by an oil pump so that the insulating oil in the test chamber reaches the set temperature.

In another embodiment, the first input terminal and the second output terminal are connected by a first connection pipe 10-1, and the second input terminal and the second output terminal are connected by a second connection pipe 10-2.

In another embodiment, the first connection pipe 10-1 and the second connection pipe 10-2 are temperature-resistant and oil-resistant hoses.

In another embodiment, a first filter 14-1 is disposed at a first input end of the testing chamber 11, and a second filter 14-2 is disposed at a second input end of the testing chamber 11.

In this embodiment, the filter comprises activated carbon fiber and filter pulp, can effectively filter the particulate matter in the oil. Through the filtering and purifying effect of the filter, the replacement frequency of the insulating oil can be reduced.

In another embodiment, the test chamber 11 is further provided with a viewing window 13 on a side adjacent to the side on which the first input and the second input are provided.

In another embodiment, the bottom of the heating chamber 3 is provided with a pillar 8, and a first base 9 is connected to the lower end of the pillar 8.

In another embodiment, the bottom of the test chamber 11 is provided with a liftable pillar 15, and the lower end of the liftable pillar 15 is connected with a second base 16.

In another embodiment, the first heat-insulating layer 5 is further disposed outside the heating cavity 3.

In another embodiment, a second insulating layer 12 is further disposed outside the testing chamber 11.

In the above embodiment and this embodiment, any existing thermal insulation material can be used to prepare the first thermal insulation layer and the second thermal insulation layer, such as polyurethane, and will not be described herein again.

While the embodiments of the disclosure have been described above in connection with the drawings, the disclosure is not limited to the specific embodiments and applications described above, which are intended to be illustrative, instructive, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto and changes may be made without departing from the scope of the disclosure as set forth in the claims that follow.

Claims

1. A temperature control system suitable for use in breakdown testing of an insulating material, the system comprising:

a heating cavity is formed in the heating chamber,

a heater is arranged in one side of the heating cavity,

a temperature controller is arranged outside one side of the heating cavity,

the system further comprises:

a test chamber is arranged in the test chamber,

2. The system of claim 1, wherein a first oil pump is further disposed at the first output end of the heating chamber and a second oil pump is further disposed at the second output end of the heating chamber.

3. The system of claim 1, wherein the first and second inputs are connected by a first connecting tube and the second and second outputs are connected by a second connecting tube.

4. The system of claim 3, wherein the first and second connecting tubes are temperature and oil resistant hoses.

5. The system of claim 1, wherein a first filter is disposed at a first input end of the test chamber and a second filter is disposed at a second input end of the test chamber.

6. The system of claim 1, wherein a side of the test chamber adjacent to the side at which the first and second inputs are provided is further provided with a viewing window.

7. The system of claim 1, wherein the bottom of the heating chamber is provided with a support post having a first pedestal attached to a lower end of the support post.

8. The system of claim 1, wherein the bottom of the test chamber is provided with a liftable pillar, and a second base is connected to the lower end of the liftable pillar.

9. The system of claim 1, wherein the heating chamber is further provided with a first thermal insulation layer outside the chamber.

10. The system of claim 1, wherein a second layer of insulation is disposed outside the test chamber.