Insulation test tool for components of environment-friendly gas insulation equipment

Abstract

The utility model discloses an environment-friendly gas insulation equipment component insulation test tool which comprises a tank body assembly, a component fixing end cover, an inner cone insulator, a conductive assembly, a grounding line and a test cable, an inflation inner cavity is arranged in the tank body assembly, and the tank body assembly is provided with a valve port used for being filled with environment-friendly insulation gas. The element fixing end cover is used for mounting a to-be-tested element, and the element fixing end cover is fixed at the front part of the tank body assembly and enables the to-be-tested element to pass through the front part of the tank body assembly; the inner cone insulator is fixed in the tank assembly and located at the rear part of the tank assembly, one end of the conductive assembly is connected to the inner cone insulator, the other end of the conductive assembly faces an element to be tested, the grounding line is connected with the grounding line, and the test cable is connected with the inner cone insulator; after environment-friendly insulating gas is injected into the valve port, voltage is increased along one end of the test cable so as to test the insulating performance. The insulating performance of the component can be tested in an environment filled with environment-friendly insulating gas, and performance data of the component close to an actual working condition can be obtained.

Description

Technical Field

[0001] The utility model relates to an insulation testing technology, in particular to an insulation testing tool for components of environmentally friendly gas insulation equipment. Background Art

[0002] At present, the insulation properties of environmentally friendly gas-insulated equipment components are closely related to their high-pressure and high-voltage working environment. The insulation performance of components cannot be tested in ordinary atmospheric environments. If they are tested in gas-insulated switchgear, it will be difficult to determine the exact problem point due to too many components, and the efficiency is high and the cost is low. Therefore, a tool is needed to test the insulation performance of a single component.

[0003] The above patent document, combined with the prior art, reveals that the existing insulation test tooling for environmentally friendly gas-insulated equipment components has the following defects:

[0004] When the insulation performance of the high-voltage primary components of the original SF6 gas-insulated equipment is tested separately, due to the high price of SF6 gas, a test platform for SF6 gas environment is often not built for testing, and an equivalent environment such as immersion in insulating oil is established to test the component performance. Nowadays, environmentally friendly alternatives to gas-insulated equipment are imperative, and the insulation performance of environmentally friendly gases is weaker than that of SF6 gas. Such equivalent environment test plans are not suitable for component performance verification of environmentally friendly insulating gas equipment, and existing equipment has the problem of poor insulation test results. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides an insulation test tool for environmentally friendly gas-insulated equipment components, which solves the insulation test tool problem for environmentally friendly gas-insulated equipment components.

[0006] The first aspect of the utility model is to provide an insulation test tool for components of environmentally friendly gas-insulated equipment, comprising: a tank assembly, a component fixing end cover, an inner cone insulator, a conductive component, a grounding circuit, and a test cable. The tank assembly is provided with an inflatable inner cavity, the tank assembly is provided with a valve port for filling environmentally friendly insulating gas, the component fixing end cover is used to install a component to be tested, the component fixing end cover is fixed to the front of the tank assembly and allows the component to be tested to pass through the front of the tank assembly; the inner cone insulator is fixed to the inside of the tank assembly and located at the rear of the tank assembly, one end of the conductive component is connected to the inner cone insulator, and the other end faces the component to be tested, the grounding circuit is connected to the grounding circuit, and the test cable is connected to the inner cone insulator; after the environmentally friendly insulating gas is injected into the valve port, a high voltage is applied along one end of the test cable to test the insulation performance.

[0007] In the first aspect of the utility model, as a preferred embodiment, the tank assembly includes a tank body, a front end cover, and a rear end cover, and the front and rear ends of the tank body are respectively fixed to the front end cover and the rear end cover.

[0008] In the first aspect of the utility model, as a preferred embodiment, the element fixing end cover is fixed to the front end cover, the front end cover is provided with a through hole for the element to be tested to pass through, and the element fixing end cover is covered on the through hole.

[0009] In the first aspect of the utility model, as a preferred embodiment, the inner cone insulator is fixed to the rear end cover and is located in the middle of the rear end cover.

[0010] In the first aspect of the utility model, as a preferred embodiment, the conductive component includes a conductive column, a spring component, and a conductive sleeve, one end of the conductive column is fixed to the inner cone insulator, and the other end is in the spring component, and the spring component is located in the conductive sleeve.

[0011] In the first aspect of the utility model, as a preferred embodiment, the conductive column is provided with a mounting hole along the length direction, the mounting hole is provided with a screw for threaded fixing, and the screw is threadedly fixed to the inner cone insulator.

[0012] In the first aspect of the utility model, as a preferred embodiment, the axis of the conductive column coincides with the axis of the tank assembly.

[0013] In the first aspect of the utility model, as a preferred embodiment, the tank body is provided with an observation window.

[0014] In the first aspect of the utility model, as a preferred embodiment, the element fixing end cover is provided with an adjusting screw for mounting the element to be tested.

[0015] In the first aspect of the utility model, as a preferred embodiment, the tank assembly is provided with a plurality of supporting assemblies for placement.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The component fixing end cap is used to install the component to be tested, and the component fixing end cap is fixed to the front of the tank assembly and allows the component to be tested to pass through the front of the tank assembly; the inner cone insulator is fixed inside the tank assembly and located at the rear of the tank assembly, one end of the conductive component is connected to the inner cone insulator, and the other end faces the component to be tested, the grounding line is connected to the grounding line, and the test cable is connected to the inner cone insulator; after the environmentally friendly insulating gas is injected into the valve port, a high voltage is applied along one end of the test cable to test the insulation performance. The insulating rod to be tested is installed on the front end cover so that the end of the insulating rod to be tested contacts the conductive component. On the one hand, the insulation performance of the components can be tested in an environment filled with environmentally friendly insulating gas, and the performance data of the components close to the actual working conditions can be obtained. On the other hand, the tooling has strong applicability, can match the installation conditions of various components, and can adjust the test variables, such as changing the insulating gas pressure and adjusting the inter-electrode insulation distance. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a cross-sectional view of the utility model;

[0019] Figure 2 It is a partial cross-sectional view of the utility model;

[0020] Figure 3 It is the front view of the utility model;

[0021] Figure 4 It is a front view of the utility model;

[0022] Figure 5 It is a rear view of the utility model;

[0023] Figure 6 It is a three-dimensional diagram of the utility model;

[0024] Figure 7 Another perspective view of the present utility model;

[0025] Figure 8 It is a cross-sectional view of the second embodiment of the utility model;

[0026] Fig. 9 It is a cross-sectional view of the third embodiment of the utility model.

[0027] In the figure: 200, insulating rod to be tested; 300, first contact; 400, second contact; 500, bushing; 10, tank assembly; 11, tank body; 111, valve port; 112, observation window; 12, front cover; 13, rear cover; 20, component fixing end cover; 30, inner cone insulator; 40, conductive assembly; 41, conductive column; 411, mounting hole; 412, screw; 42, spring assembly; 43, conductive sleeve; 50, grounding line; 60, test cable; 70, adjusting screw. DETAILED DESCRIPTION

[0028] Below, in conjunction with the accompanying drawings and specific embodiments, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0029] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0030] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0031] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] like Figure 1-7 As shown, an insulation test tool for environmentally friendly gas-insulated equipment components includes: a tank assembly 10, a component fixing end cover 20, an inner cone insulator 30, a conductive assembly 40, a grounding line 50, and a test cable 60. The tank assembly 10 is provided with an inflatable inner cavity, and the tank assembly 10 is provided with a valve port 111 for filling environmentally friendly insulating gas. The component fixing end cover 20 is used to install a component to be tested, and the component fixing end cover 20 is fixed to the front of the tank assembly 10 and allows the component to be tested to pass through the front of the tank assembly 10; the inner cone insulator 30 is fixed to the inside of the tank assembly 10 and is located at the rear of the tank assembly 10, one end of the conductive assembly 40 is connected to the inner cone insulator 30, and the other end faces the component to be tested, the grounding line 50 is connected to the grounding line, and the test cable 60 is connected to the inner cone insulator 30; after the environmentally friendly insulating gas is rushed into the valve port 111, a high voltage is applied along one end of the test cable 60 to test the insulation performance. The insulating rod 200 to be tested is installed on the front end cover 12 so that the end of the insulating rod 200 to be tested contacts the conductive component 40. On the one hand, the insulation performance of the components can be tested in an environment filled with environmentally friendly insulating gas, and performance data of the components close to actual working conditions can be obtained. On the other hand, the tooling has strong applicability and can match the installation conditions of various components. The test variables can be adjusted, such as changing the insulating gas pressure and adjusting the inter-electrode insulation distance.

[0033] In the first aspect of the utility model, as a preferred embodiment, the tank assembly 10 includes a tank body 11, a front end cover 12, and a rear end cover 13, and the front and rear ends of the tank body 11 are respectively fixed to the front end cover 12 and the rear end cover 13. A sealed tank container is formed, which can be filled with environmentally friendly insulating gas at several atmospheres of pressure to establish an environment that is the same as the actual working conditions of the component to test the performance. The structure inside the tank can be installed with a variety of high-voltage primary components. One end of the tank is grounded and the other end is installed with a test cable. The insulation performance of the component can be tested by applying a high voltage from the cable end.

[0034] In the first aspect of the utility model, as a preferred embodiment, the component fixed end cover 20 is fixed to the front end cover 12, and the front end cover 12 is provided with a through hole for the component to be tested to pass through, and the component fixed end cover 20 is covered on the through hole. Taking the insulation performance test of the insulating rod as an example, the working principle of the tooling is briefly described: a conductive column is installed on the inner cone insulator, and a compression spring is arranged in the conductive tube; the insulating rod is first installed on the component end cover, and then installed on the front end cover together with the component end cover. At this time, one end of the insulating rod supports the conductive tube, and the spring in the tube ensures that the two are reliably connected. An appropriate amount of insulating gas is filled into the inflation valve, and the tank can withstand the design pressure of 0.76MPa. The component end cover is grounded, and a high voltage is applied to one end of the experimental cable to test the insulation performance of the inner cone insulator, such as withstand voltage, lightning, partial discharge, etc. After the test is completed, the gas can be released through the pressure relief valve to remove the tested component.

[0035] In the first aspect of the utility model, as a preferred embodiment, the inner cone insulator 30 is fixed to the rear end cover 13 and is located in the middle of the rear end cover 13 .

[0036] In the first aspect of the utility model, as a preferred embodiment, the conductive component 40 includes a conductive column 41, a spring component 42, and a conductive sleeve 43. One end of the conductive column 41 is fixed to the inner cone insulator 30, and the other end is in the spring component 42. The spring component 42 is located in the conductive sleeve 43, and the elasticity test effect is good.

[0037] In the first aspect of the utility model, as a preferred embodiment, the conductive column 41 is provided with a mounting hole 411 along the length direction, and the mounting hole 411 is provided with a screw 412 for threaded fixing, and the screw 412 is threadedly fixed to the inner cone insulator 30, and the structure is stable.

[0038] In the first aspect of the present utility model, as a preferred embodiment, the axis of the conductive column 41 coincides with the axis of the tank assembly 10. The tank body 11 is provided with an observation window 112.

[0039] In the first aspect of the utility model, as a preferred embodiment, the element fixing end cover 20 is provided with an adjusting screw 70 for mounting the element to be tested, and the position of the element to be tested is adjusted by adjusting the adjusting screw 70.

[0040] In the first aspect of the utility model, as a preferred embodiment, the tank assembly 10 is provided with a plurality of supporting assemblies for placement to avoid shaking.

[0041] See also Figure 8The first contact 300 is mounted on the front cover 12 , and the second contact 400 is mounted on one end of the conductive component 40 , and a detection distance is formed between the first contact 300 and the second contact 400 .

[0042] See also Fig. 9 , the sleeve 500 is installed on the front end cover 12 for detection.

[0043] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An insulation test tool for environmentally friendly gas-insulated equipment components, characterized in that: include: A tank assembly, a component fixing end cover, an inner cone insulator, a conductive assembly, a grounding line, and a test cable. The tank assembly is provided with a gas-filled inner cavity, the tank assembly is provided with a valve port for filling environmentally friendly insulating gas, the component fixing end cover is used to install the component to be tested, the component fixing end cover is fixed to the front of the tank assembly and allows the component to be tested to pass through the front of the tank assembly; The inner cone insulator is fixed inside the tank assembly and is located at the rear of the tank assembly. One end of the conductive assembly is connected to the inner cone insulator, and the other end faces the component to be tested. The grounding line is connected to the grounding line, and the test cable is connected to the inner cone insulator. After flushing environmentally friendly insulating gas into the valve port, a high voltage is applied along one end of the test cable to test the insulation performance.

2. The environmentally friendly gas insulated equipment component insulation test tool as claimed in claim 1, characterized in that: The tank assembly comprises a tank body, a front end cover and a rear end cover, and the front and rear ends of the tank body are respectively fixed to the front end cover and the rear end cover.

3. The environmentally friendly gas insulated equipment component insulation test tool as claimed in claim 2, characterized in that: The element fixing end cover is fixed to the front end cover. The front end cover is provided with a through hole for the element to be tested to pass through, and the element fixing end cover is covered in the through hole.

4. The environmentally friendly gas-insulated equipment component insulation test tool as claimed in claim 2, characterized in that: The inner cone insulator is fixed to the rear end cover and is located in the middle of the rear end cover.

5. The environmentally friendly gas insulated equipment component insulation test tool as claimed in claim 1, characterized in that: The conductive component comprises a conductive column, a spring component and a conductive sleeve. One end of the conductive column is fixed to the inner cone insulator, and the other end is located in the spring component. The spring component is located in the conductive sleeve.

6. The environmentally friendly gas insulated equipment component insulation test tool as claimed in claim 5, characterized in that: The conductive column is provided with a mounting hole along the length direction, and the mounting hole is provided with a screw for threaded fixing, and the screw is threadedly fixed to the inner cone insulator.

7. The environmentally friendly gas-insulated equipment component insulation test tool as claimed in claim 6, characterized in that: The axis of the conductive column coincides with the axis of the tank assembly.

8. The environmentally friendly gas insulated equipment component insulation test tool as claimed in claim 2, characterized in that: The tank body is provided with an observation window.

9. The environmentally friendly gas insulated equipment component insulation test tool as claimed in claim 1, characterized in that: The element fixing end cover is provided with an adjusting screw for mounting the element to be tested.

10. The environmentally friendly gas insulated equipment component insulation test tool as claimed in claim 1, characterized in that: The tank assembly is provided with a plurality of supporting assemblies for placement.

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