Gas collection device based on insulation degradation experiment

Abstract

The utility model relates to the technical field of gas collection devices, and discloses a gas collection device for insulation degradation experiments, which comprises a collection device body, a pressure valve fixedly connected to the top of the collection device body, an exhaust pipe fixedly connected to the top of the pressure valve, and a threaded pipe fixedly connected to one end, far away from the pressure valve, of the exhaust pipe. The threaded pipe is in threaded connection with a threaded cover, one side of the threaded cover is fixedly connected with a collection bag, and a sealing assembly is arranged in the threaded pipe; according to the gas collection device for the insulation degradation experiment, the collection bag is in threaded connection with the threaded pipe through the threaded cover on one side of the collection bag, so that the collection bag is relatively convenient to disassemble and assemble, a worker can conveniently replace the collection bag, and the working efficiency of an experimenter is effectively improved; after the collecting bag is detached, the sealing assembly can effectively prevent gas in the exhaust pipe from being exhausted into the air and affecting the air quality.

Description

Technical Field

[0001] The utility model relates to the technical field of gas collection devices, in particular to a gas collection device based on insulation degradation experiments. Background Art

[0002] To investigate the discharge initiation and progression characteristics of insulation degradation at the interface of cable accessories under conditions of internal and external temperature differentials and moisture intrusion, a test platform for studying interface insulation degradation characteristics under combined stress was constructed. The test samples included simulated interface unit samples, as well as real cable accessory samples without built-in defects and with different types of pre-existing interface defects. The entire sample was placed in a sealed experimental chamber with precise temperature and humidity control. To achieve clear and high-speed optical image capture of the entire discharge degradation process, the sides and top of the chamber were constructed with highly transparent quartz glass. To enable staged gas sampling throughout the test, gas sampling holes were provided in the top of the chamber. During the test, one-way gas collection sealing tape was used to collect the escaping gas in stages. Considering that the test would reach the final stage of insulation breakdown, the gas escaping during the insulation degradation process could accumulate rapidly and cause an explosion. A pressure valve 2 was installed in the sealed chamber. Once the pressure on pressure valve 2 reached the threshold, it immediately opened, guiding the rapid diffusion of the gas. The entire experimental process adhered to the experimental principles of precise stress control and a single variable during the test.

[0003] However, during the test, the staff needs to regularly replace the collection bag to prevent the bag from bursting due to excessive gas inside, causing the gas inside the bag to leak and affect the air quality. However, the replacement of the collection bag on the current test platform is relatively inconvenient, which affects the work efficiency of the test personnel.

[0004] In order to solve the above problems, this application proposes a gas collection device for insulation degradation experiments. Utility Model Content

[0005] The utility model aims to provide a gas collection device for insulation degradation experiments, which is mainly used to solve the problem that it is inconvenient to replace the collection bag on the existing test platform, thereby affecting the work efficiency of the test personnel.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A gas collection device for insulation degradation experiments includes a collection device body, a pressure valve fixedly connected to the top of the collection device body, an exhaust pipe fixedly connected to the top of the pressure valve, a threaded pipe fixedly connected to one end of the exhaust pipe away from the pressure valve, a threaded cover threadedly connected to the threaded pipe, a collection bag fixedly connected to one side of the threaded cover, and a sealing assembly provided inside the threaded pipe.

[0008] The working principle and beneficial effects of this utility model:

[0009] 1. Working principle: When the staff needs to replace the collection bag during the use of the device, they can remove the threaded cover and the collection bag from the threaded tube by turning the threaded cover, take out the new collection bag and thread the threaded cover on it onto the threaded tube, thus completing the replacement of the collection bag and the device can operate normally.

[0010] 2. Beneficial effects: The collection bag is threadedly connected to the threaded tube through the threaded cover on one side, making it easier to assemble and disassemble the collection bag, thereby facilitating replacement of the collection bag by the staff and effectively improving the work efficiency of the experimenters. After the collection bag is removed, the sealing component can effectively prevent the gas inside the exhaust pipe from being discharged into the air and affecting the air quality.

[0011] Preferably, the sealing assembly includes a spring fixedly connected to the side of the inner wall of the threaded tube close to the exhaust pipe, a baffle fixedly connected to the other end of the spring, a push rod connected to the inside of the threaded cover, and a through hole opened on the side of the threaded tube away from the exhaust pipe. The diameter of the through hole is smaller than the diameter of the baffle and larger than the diameter of the push rod. When the staff installs the collection bag, they thread the threaded cover on the collection bag onto the threaded tube. Rotating the threaded cover can allow the push rod inside the cover to pass through the through hole on the threaded tube and push the baffle to move toward the inside of the threaded tube, and squeeze the spring to put it in a compressed state. After tightening the threaded cover, the device can operate normally, and the gas can flow normally to the inside of the collection bag. After the collection bag is removed, the baffle will move under the action of the spring and block the through hole, thereby effectively preventing the gas inside the exhaust pipe from being discharged into the air and affecting the air quality.

[0012] Preferably, the end of the outer wall of the push rod away from the threaded tube is fixedly connected to a fixing ring, the outer wall of the fixing ring is fixedly connected to a connecting rod, the end of the connecting rod away from the fixing ring is fixedly connected to the inner wall of the threaded cover, and the fixing ring provided on the outer wall of the push rod and the fixing ring are connected to the inner wall of the threaded cover through the connecting rod, which can better fix the push rod, thereby effectively improving the stability of the device during operation.

[0013] Preferably, a ball is rotatably connected to the push rod near the center of one end of the threaded tube. When the push rod pushes the baffle to move, one end of the push rod will be pressed against the baffle. The ball set at one end of the push rod can effectively reduce the friction between the push rod and the baffle, thereby effectively reducing the wear between the push rod and the baffle, thereby extending the service life of the device.

[0014] Preferably, the number of connecting rods is not less than four, and the connecting rods are evenly distributed in a circular array on the outer wall of the fixing ring. The fixing ring and the inner wall of the threaded cover are connected by multiple connecting rods, which can further improve the stability of the push rod and effectively ensure the normal use of the device.

[0015] Preferably, a sealing gasket is fixedly connected to the side of the baffle away from the spring, and the sealing gasket is made of rubber material. Since the rubber material has a good sealing effect, after the collection bag is removed through the sealing gasket set on one side of the baffle, the sealing gasket on one side of the baffle is pressed against the inner wall of the threaded tube under the action of the spring, which can better seal the through hole, thereby making the sealing effect of the threaded tube better.

[0016] Preferably, the outer wall of the threaded cap is provided with a rubber sleeve, and the outer wall of the rubber sleeve is provided with anti-slip grooves. The rubber sleeve provided on the outer wall of the threaded cap can make people's hands more comfortable when holding and turning the threaded cap. The anti-slip grooves provided on the outer wall of the rubber sleeve can increase the friction between people's hands and the threaded cap, thereby effectively preventing people's hands from slipping when turning the threaded cap. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0018] Figure 2 It is a schematic cross-sectional structure diagram of the entire utility model;

[0019] Figure 3 This is a schematic diagram of the overall structure of the collection bag of the utility model;

[0020] Figure 4 For this utility model Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0021] In the figure: 1. Collection device body; 2. Pressure valve; 3. Exhaust pipe; 4. Collection bag; 5. Threaded tube; 6. Threaded cover; 7. Baffle; 8. Spring; 9. Push rod; 10. Through hole; 11. Fixing ring; 12. Connecting rod; 13. Ball; 14. Sealing gasket; 15. Rubber sleeve. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4A gas collection device for insulation degradation experiment includes a collection device body 1, a pressure valve 2 is fixedly connected to the top of the collection device body 1, an exhaust pipe 3 is fixedly connected to the top of the pressure valve 2, a threaded pipe 5 is fixedly connected to the end of the exhaust pipe 3 away from the pressure valve 2, a threaded cover 6 is threadedly connected to the threaded pipe 5, and a collection bag 4 is fixedly connected to one side of the threaded cover 6. During the test, a one-way air intake gas collection sealing tape is used to collect the overflow gas in stages, and a pressure valve 2 is set in the sealing box. Once the pressure on the pressure valve 2 reaches the threshold, it will open immediately, and the gas will enter the collection bag 4 through the exhaust pipe 3, thereby realizing the collection of gas. When the staff needs to replace the collection bag 4, they can remove the threaded cover 6 and the collection bag 4 from the threaded tube 5 by rotating the threaded cover 6, take out the new collection bag 4 and thread the threaded cover 6 on it onto the threaded tube 5, and the replacement of the collection bag 4 is completed. The outer wall of the threaded cover 6 is provided with a rubber sleeve 15, which makes people's hands more comfortable when holding and rotating the threaded cover 6. The outer wall of the rubber sleeve 15 is provided with anti-slip grooves, which can increase the friction between people's hands and the threaded cover 6, thereby effectively preventing people from slipping when rotating the threaded cover 6. The interior of the threaded tube 5 is provided with a sealing component. After the collection bag 4 is removed, the sealing component can effectively prevent the gas inside the exhaust pipe 3 from being discharged into the air and affecting the air quality.

[0024] like Figure 2 and Figure 4As shown, the sealing assembly includes a spring 8 fixedly connected to one side of the inner wall of the threaded tube 5 close to the exhaust pipe 3, and the other end of the spring 8 is fixedly connected to the baffle 7. A push rod 9 is connected to the inside of the threaded cover 6, and an end of the outer wall of the push rod 9 away from the threaded tube 5 is fixedly connected to a fixing ring 11. The outer wall of the fixing ring 11 is fixedly connected to a plurality of connecting rods 12, and the end of the connecting rod 12 away from the fixing ring 11 is fixedly connected to the inner wall of the threaded cover 6. A through hole 10 is provided on the side of the threaded tube 5 away from the exhaust pipe 3. The diameter of the through hole 10 is smaller than the diameter of the baffle 7 and larger than the diameter of the push rod 9. When the staff installs the collection bag 4, the threaded cover 6 on the collection bag 4 is threadedly connected to the threaded tube 5. Rotating the threaded cover 6 can make the push rod 9 inside it pass through the through hole 10 on the threaded tube 5 and push the baffle 7 to move toward the inside of the threaded tube 5, and squeeze the spring 8 to make it in a compressed state. After tightening the threaded cover 6, the device can operate normally, and the gas can flow normally to the inside of the collection bag 4, and the collection bag 4 can be removed. The airtight seal 13 of the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight seal 11 is then released, and the airtight

[0025] From the above, it can be seen that the specific implementation of the present invention is as follows:

[0026] When the bag 4 is in the working state, the staff will screw the screw cap 6 on the bag 4 to the screw pipe 5, and the screw cap 6 on the bag 4 will be screwed to the screw pipe 5, thereby effectively preventing the gas in the exhaust pipe 3 from being discharged into the air and affecting the air quality. The new bag 4 is taken out and the screw cap 6 on it is screwed to the screw pipe 5, thereby completing the replacement of the bag 4 and continuing to collect the gas generated during the test.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A gas collection device for insulation degradation experiment, comprising a collection device body (1), characterized in that: The top of the collection device body (1) is fixedly connected to a pressure valve (2), the top of the pressure valve (2) is fixedly connected to an exhaust pipe (3), one end of the exhaust pipe (3) away from the pressure valve (2) is fixedly connected to a threaded pipe (5), a threaded cover (6) is threadedly connected to the threaded pipe (5), one side of the threaded cover (6) is fixedly connected to a collection bag (4), and a sealing component is provided inside the threaded pipe (5).

2. The gas sampling device for insulation degradation testing according to claim 1, characterized in that: The sealing assembly comprises a spring (8) fixedly connected to one side of the inner wall of the threaded tube (5) close to the exhaust pipe (3), a baffle (7) fixedly connected to the other end of the spring (8), a push rod (9) connected to the inside of the threaded cover (6), and a through hole (10) formed on the side of the threaded tube (5) away from the exhaust pipe (3), wherein the diameter of the through hole (10) is smaller than the diameter of the baffle (7) and larger than the diameter of the push rod (9).

3. The gas sampling device for insulation degradation testing according to claim 2, characterized in that: The end of the outer wall of the push rod (9) away from the threaded tube (5) is fixedly connected to a fixing ring (11), the outer wall of the fixing ring (11) is fixedly connected to a connecting rod (12), and the end of the connecting rod (12) away from the fixing ring (11) is fixedly connected to the inner wall of the threaded cover (6).

4. The gas sampling device for insulation degradation testing according to claim 2, characterized in that: The push rod (9) is rotatably connected to a ball (13) near the center of one end of the threaded tube (5).

5. The gas sampling device for insulation degradation testing according to claim 3, characterized in that: The number of the connecting rods (12) is not less than four, and the connecting rods (12) are distributed on the outer wall of the fixing ring (11) in a circular array at equal distances.

6. The gas sampling device for insulation degradation testing according to claim 2, characterized in that: A sealing gasket (14) is fixedly connected to a side of the baffle (7) away from the spring (8), and the sealing gasket (14) is made of rubber material.

7. The gas sampling device for insulation degradation testing according to claim 1, characterized in that: The outer wall of the threaded cover (6) is provided with a rubber sleeve (15), and the outer wall of the rubber sleeve (15) is provided with anti-slip grooves.

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