Vacuum valve sealing performance testing device

Abstract

The utility model discloses a vacuum valve sealing performance testing device in the technical field of vacuum valve testing, which comprises a vacuum valve body, a monitoring mechanism arranged on the outer side of the vacuum valve body, a butt joint mechanism arranged above the vacuum valve body, a detection bin arranged on the outer side of the vacuum valve body, and an infrared thermal imager fixedly mounted at the front end of the detection bin. The vacuum valve sealing performance testing device is composed of a monitoring mechanism and a butt joint mechanism, the monitoring mechanism and the butt joint mechanism supplement each other, an infrared thermal imager is used for monitoring the temperature, an inflation pipeline is used for gas injection, and a temperature increasing structure is matched to form the testing device. The sealing performance is judged by detecting the temperature change of the gas at the leakage position, if leakage exists, gas flowing can cause the temperature change, and therefore it can be determined that the sealing performance of the vacuum valve is very good, the detection efficiency is high, the temperature change condition can be rapidly obtained, and the sealing performance of the vacuum valve can be rapidly judged.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum valve testing, in particular to a vacuum valve sealing testing device. Background Art

[0002] A vacuum valve is a valve specially designed for use in vacuum systems. Its main feature is that its working pressure is lower than standard atmospheric pressure. A vacuum valve is a valve used to change the direction of airflow, adjust the amount of airflow, and cut off or connect pipelines in a vacuum system. Its working pressure is lower than standard atmospheric pressure and it is usually used to achieve pressure control within the system. There are many types of vacuum valves, including electromagnetic vacuum valves, manual vacuum valves, automatic control vacuum valves, etc. According to different working principles and application requirements, the design and material selection of vacuum valves are also different.

[0003] In the current field of vacuum technology, vacuum valves are key components in vacuum systems, and the reliability of their performance is crucial to the stable operation of the entire system. However, in actual application, vacuum valves may leak. Once a leak occurs inside the vacuum valve, it will directly affect the air pressure stability of the entire vacuum system, which may in turn trigger a series of negative effects. Specifically, when a vacuum valve leaks, it will cause the air pressure inside the vacuum system to fluctuate. This change in air pressure will not only affect the system's working efficiency, but may also affect some precision equipment or experimental results inside the system. Continuous air pressure fluctuations may even cause structural damage to the vacuum system, thereby shortening its service life and increasing costs. Utility Model Content

[0004] The purpose of the present utility model is to provide a vacuum valve sealing test device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a vacuum valve sealing test device, comprising a vacuum valve body, a monitoring mechanism is provided on the outside of the vacuum valve body, a docking mechanism is provided above the vacuum valve body, the monitoring mechanism comprises a detection chamber, an infrared thermal imager body, a heating chamber, a heating wire, a first temperature detector, a second temperature detector and a thermal insulation cover, a detection chamber is provided on the outside of the vacuum valve body, an infrared thermal imager body is fixedly installed at the front end of the detection chamber, a heating chamber is fixedly installed at the bottom end of the detection chamber, and a heating wire is installed inside the heating chamber.

[0006] Optionally, a first temperature detector is fixedly installed at the right end of the detection chamber, a second temperature detector is fixedly installed at the left end of the detection chamber, and a thermal insulation cover is installed at the upper end of the detection chamber.

[0007] Optionally, the docking mechanism includes a mounting rod, an air rod body, a docking seat, a pipe support rod, a pipe mounting ring, an inflation pipe, a docking sleeve, a first connecting pipe seat, an air inlet pipe, an air outlet pipe, a second connecting pipe seat and a sealing plug, and the upper end of the detection chamber is fixedly mounted with a mounting rod.

[0008] Optionally, a gas rod body is fixedly mounted on the mounting rod, a lower end of the gas rod body is fixedly connected to a docking seat, and a pipeline support rod is fixedly mounted on the lower end of the docking seat.

[0009] Optionally, a pipeline mounting ring is fixedly mounted on one end of the pipeline support rod away from the docking seat, and an inflation pipeline is mounted on the inner side of the pipeline mounting ring.

[0010] Optionally, the right end of the inflation pipe is fixedly connected to a docking sleeve, the inner side of the docking sleeve is threadedly connected to a first connecting pipe seat, and the first connecting pipe seat is fixedly connected to the air intake pipe.

[0011] Optionally, an air outlet pipe is fixedly installed on the right end of the vacuum valve body, and the right end of the air outlet pipe is fixedly connected to a second connecting pipe seat, and the outer side of the second connecting pipe seat is threadedly connected to a sealing plug.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] In the present utility model, a monitoring mechanism and a docking mechanism are provided. The monitoring mechanism monitors the temperature inside the detection chamber through the infrared thermal imager body, the first temperature detector and the second temperature detector, and can accurately capture the tiny temperature changes caused by poor sealing of the vacuum valve body, thereby ensuring the accuracy of the detection results. The non-contact detection method of the infrared thermal imager body reduces the errors and damages that may be caused by direct contact, and improves the stability and safety of the detection process. The monitoring mechanism can monitor and feedback the temperature changes in real time, so that the operator can immediately know the sealing status of the vacuum valve body and make timely adjustments; the docking mechanism simplifies the operation process, and through rotating installation and pushing, the vacuum valve body can be quickly and accurately moved to the detection chamber, thereby improving the operating efficiency. The rotating installation method of the sealing plug and the docking sleeve ensures a stable connection between the docking mechanism and the vacuum valve body, and reduces the errors caused by unstable docking during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the structure of the utility model in a three-dimensional front view;

[0015] Figure 2 This is a schematic structural diagram of the utility model when viewed from the front plane;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model from a three-dimensional top view;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model in plan view Figure 1 ;

[0018] Figure 5 This is a schematic diagram of the structure of the utility model in a three-dimensional cross-section;

[0019] Figure 6 This is a schematic diagram of the structure of the utility model in plan view Figure 2 ;

[0020] Figure 7 For this utility model Figure 5 Schematic diagram of the three-dimensional enlarged structure at point A in the middle.

[0021] In the figure: 1. Vacuum valve body; 2. Monitoring mechanism; 201. Detection chamber; 202. Infrared thermal imager body; 203. Heating chamber; 204. Heating wire; 205. First temperature detector; 206. Second temperature detector; 207. Insulation cover; 3. Docking mechanism; 301. Mounting rod; 302. Gas rod body; 303. Docking seat; 304. Pipe support rod; 305. Pipe mounting ring; 306. Inflating pipe; 307. Docking sleeve; 308. First connecting pipe seat; 309. Inlet pipe; 310. Outlet pipe; 311. Second connecting pipe seat; 312. Sealing plug. DETAILED DESCRIPTION

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] 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.

[0025] See also Figures 1 to 7 In an embodiment of the present utility model, a vacuum valve sealing test device includes a vacuum valve body 1, a monitoring mechanism 2 is provided on the outside of the vacuum valve body 1, a docking mechanism 3 is provided above the vacuum valve body 1, the monitoring mechanism 2 includes a detection chamber 201, an infrared thermal imager body 202, a heating chamber 203, a heating wire 204, a first temperature detector 205, a second temperature detector 206 and a thermal insulation cover 207, a detection chamber 201 is provided on the outside of the vacuum valve body 1, the infrared thermal imager body 202 is fixedly installed at the front end of the detection chamber 201, the heating chamber 203 is fixedly installed at the bottom end of the detection chamber 201, the heating wire 204 is installed inside the heating chamber 203, the first temperature detector 205 is fixedly installed at the right end of the detection chamber 201, the second temperature detector 206 is fixedly installed at the left end of the detection chamber 201, and the thermal insulation cover 207 is installed at the upper end of the detection chamber 201;

[0026] The detection chamber 201 provides a closed testing environment for leak testing. The infrared thermal imager 202 can non-contactly monitor the temperature distribution within the detection chamber 201, accurately capturing temperature changes caused by gas leaks, improving the accuracy and efficiency of detection. The heating wire 204 heats the gas in the test chamber, helping to detect tiny leaks through the principle of thermal expansion and contraction, thereby enhancing detection sensitivity. The first temperature detector 205 is used to measure the initial temperature within the detection chamber 201, and the second temperature detector 206 is used to monitor temperature changes during the test. By comparing the data with the data from the first temperature detector 205, the location and extent of the gas leak can be accurately determined.

[0027] The docking mechanism 3 includes a mounting rod 301, a gas rod body 302, a docking seat 303, a pipe support rod 304, a pipe mounting ring 305, an inflation pipe 306, a docking sleeve 307, a first connecting pipe seat 308, an air inlet pipe 309, an air outlet pipe 310, a second connecting pipe seat 311 and a sealing plug 312. The upper end of the detection chamber 201 is fixedly mounted with the mounting rod 301, the gas rod body 302 is fixedly mounted on the mounting rod 301, the lower end of the gas rod body 302 is fixedly connected to the docking seat 303, the lower end of the docking seat 303 is fixedly mounted with the pipe support rod 304, and the pipe A pipe mounting ring 305 is fixedly mounted on one end of the support rod 304 away from the docking seat 303. An inflation pipe 306 is mounted on the inner side of the pipe mounting ring 305. The right end of the inflation pipe 306 is fixedly connected to a docking sleeve 307. The inner side of the docking sleeve 307 is threadedly connected to a first pipe seat 308. The first pipe seat 308 is fixedly connected to the air inlet pipe 309. An air outlet pipe 310 is fixedly mounted on the right end of the vacuum valve body 1. The right end of the air outlet pipe 310 is fixedly connected to a second pipe seat 311. The outer side of the second pipe seat 311 is threadedly connected to a sealing plug 312.

[0028] The mounting rod 301 provides a stable support for the docking mechanism 3, ensuring the stability and accuracy of the entire docking process. The gas rod body 302 achieves precise movement of the docking seat 303 by pushing downward, ensuring the effective docking of the vacuum valve body 1 and the detection chamber 201. The pipe support rod 304 provides additional support, ensuring that the inflation pipe 306 and the pipe mounting ring 305 remain stable during the connection process, avoiding leakage caused by vibration or displacement. The inflation pipe 306 provides the necessary gas channel for testing, ensuring that the gas can be evenly and effectively filled into the detection chamber 201, providing basic conditions for testing. The sealing plug 312 is rotatably installed on the second connecting pipe seat 311, effectively blocking the outlet pipe 310, preventing gas leakage during the detection process, and ensuring the accuracy of the test.

[0029] After the air inlet pipe 306 is connected to the air inlet pipe 309, the air inlet pipe 306 is connected to the air inlet pipe 309, and the air inlet pipe 309 is connected to the air inlet pipe 309. The boundary inflation pump injects gas into the inflation pipe 306, so that the low-temperature gas is filled into the vacuum valve body 1. At the same time, the infrared thermal imager body 202, the first temperature detector 205 and the second temperature detector 206 monitor the temperature inside the detection chamber 201. If there is a problem with the sealing of the vacuum valve body 1, the low-temperature gas will leak out of the vacuum valve body 1, which will cause the temperature inside the detection chamber 201 to change, thereby judging the sealing of the vacuum valve body 1; in summary, the monitoring mechanism 2 and the docking mechanism 3 complement each other, using the infrared thermal imager body 202 to monitor the temperature, using the inflation pipe 306 to inject gas, and then cooperating with the warming structure to form a testing device, and judging the sealing performance by detecting the temperature change of the gas at the leak point. If there is a leak, the gas flow will cause the temperature change, thereby determining that the sealing of the vacuum valve is very intact, with high detection efficiency, and the temperature change can be quickly obtained, so as to quickly judge the sealing of the vacuum valve.

[0030] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vacuum valve sealing test device, comprising a vacuum valve body (1), characterized in that: A monitoring mechanism (2) is provided on the outside of the vacuum valve body (1), and a docking mechanism (3) is provided above the vacuum valve body (1). The monitoring mechanism (2) comprises a detection chamber (201), an infrared thermal imager body (202), a heating chamber (203), a heating wire (204), a first temperature detector (205), a second temperature detector (206), and a thermal insulation cover (207). The detection chamber (201) is provided on the outside of the vacuum valve body (1), the infrared thermal imager body (202) is fixedly mounted on the front end of the detection chamber (201), the heating chamber (203) is fixedly mounted on the bottom end of the interior of the detection chamber (201), and the heating wire (204) is mounted inside the heating chamber (203).

2. A vacuum valve sealing test device according to claim 1, characterized in that: A first temperature detector (205) is fixedly mounted on the right end of the detection chamber (201), a second temperature detector (206) is fixedly mounted on the left end of the detection chamber (201), and a thermal insulation cover (207) is mounted on the upper end of the detection chamber (201).

3. The vacuum valve sealing test device according to claim 1, characterized in that: The docking mechanism (3) comprises a mounting rod (301), an air rod body (302), a docking seat (303), a pipeline support rod (304), a pipeline mounting ring (305), an inflation pipeline (306), a docking sleeve (307), a first connecting pipe seat (308), an air inlet pipe (309), an air outlet pipe (310), a second connecting pipe seat (311) and a sealing plug (312). The mounting rod (301) is fixedly mounted on the upper end of the detection chamber (201).

4. A vacuum valve sealing test device according to claim 3, characterized in that: A gas rod body (302) is fixedly mounted on the mounting rod (301), a docking seat (303) is fixedly connected to the lower end of the gas rod body (302), and a pipeline support rod (304) is fixedly mounted on the lower end of the docking seat (303).

5. The vacuum valve sealing test device according to claim 4, characterized in that: A pipeline mounting ring (305) is fixedly mounted on one end of the pipeline support rod (304) away from the docking seat (303), and an inflation pipeline (306) is mounted on the inner side of the pipeline mounting ring (305).

6. The vacuum valve sealing test device according to claim 5, characterized in that: The right end of the inflation pipe (306) is fixedly connected to a docking sleeve (307), the inner side of the docking sleeve (307) is threadedly connected to a first connecting pipe seat (308), and the first connecting pipe seat (308) is fixedly connected to the air intake pipe (309).

7. The vacuum valve sealing test device according to claim 1, characterized in that: An air outlet pipe (310) is fixedly mounted on the right end of the vacuum valve body (1), a second connecting pipe seat (311) is fixedly connected to the right end of the air outlet pipe (310), and a sealing plug (312) is threadedly connected to the outer side of the second connecting pipe seat (311).

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