Air-tight detection instrument air path valve island

Abstract

The utility model discloses a kind of air-tight detection instrument gas path valve island, including differential pressure sensor mounting fixture and direct pressure sensor mounting fixture, the differential pressure sensor mounting fixture and direct pressure sensor mounting fixture are inserted on gas path valve island, gas path board is fixedly arranged on the gas path valve island, standard end gas valve installation position, air release control gas valve installation position, air inlet control gas valve installation position and test end gas valve installation position are equipped on the gas path valve island;The valve island can use direct pressure sensor to judge large capacity leakage, after passing through large capacity leakage judgment, it can use differential pressure sensor to judge small leakage amount;External expansion gas tank can be used for large volume product test.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically to an airtightness testing instrument with an air circuit valve island. Background Technology

[0002] Gas valve islands are devices used in industrial manufacturing for testing the air tightness of products. In the past, simple single direct pressure air tightness testing gas valve islands were used, but the testing error was large. In addition, the existing differential pressure sensor fixing modules occupy a large area on the gas valve island, which is inconvenient to assemble. When testing large-volume products, the existing gas valve islands cannot support large-volume testing. Utility Model Content

[0003] The purpose of this invention is to provide an air circuit valve island for an airtightness testing instrument to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a gas path valve island for an airtightness testing instrument, comprising a differential pressure sensor mounting fixture and a direct pressure sensor mounting fixture, wherein the differential pressure sensor mounting fixture and the direct pressure sensor mounting fixture are inserted into the gas path valve island, a gas path plate is fixedly provided on the gas path valve island, and the gas path valve island is provided with a standard end gas valve mounting position, a vent control gas valve mounting position, an inlet control gas valve mounting position and a test end gas valve mounting position.

[0005] Preferably, the gas valve island is provided with an air inlet pipe, a test end processing pipe, an internal gas storage tank processing pipe, a standard end gas outlet processing pipe, and a venting end gas processing pipe.

[0006] Preferably, the air intake pipeline includes an air inlet, which is connected to the air intake processing port via a pipe; the test end processing pipeline includes a test end air intake processing port, which is connected to a test end air outlet processing port one via a pipe, and the test end air outlet processing port one is connected to a test end air outlet processing port two via a pipe; the standard end air outlet processing pipeline includes a standard end air outlet processing port two, which is connected to a standard end air outlet processing port one via a pipe; the venting end air processing pipeline includes a venting end air outlet one, which is connected to a venting end air outlet two via a pipe; and the internal air storage tank processing pipeline includes an internal air storage tank processing port.

[0007] Preferably, the internal gas storage tank processing port is connected to the test end air inlet processing port, the test end air outlet processing port 1, the venting end air processing port 1, and the air inlet processing port via a pipeline.

[0008] Compared with the prior art, the beneficial effects of this utility model are: the valve island can use a direct pressure sensor to judge large-capacity leakage, and after the large-capacity leakage judgment is passed, a differential pressure sensor can be used to judge the small leakage amount; the gas storage tank can be expanded for testing large-volume products. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0010] Figure 2 This is a schematic diagram of the internal piping of the gas valve island of this utility model;

[0011] Figure 3 This is a schematic diagram of the differential pressure sensor mounting fixture structure of this utility model;

[0012] Figure 4 This is a schematic diagram of the direct pressure sensor mounting fixture structure of this utility model.

[0013] In the diagram: 1. Differential pressure sensor mounting fixture; 2. Direct pressure sensor mounting fixture; 3. Gas valve island; 31. Inlet pipe; 311. Inlet port; 312. Inlet machining port; 32. Test end machining pipe; 321. Test end inlet machining port; 322. Test end outlet machining port one; 323. Test end outlet machining port two; 33. Internal gas storage tank machining pipe; 34. Standard end outlet machining pipe; 341. Standard end outlet machining port two; 342. Standard end outlet machining port one; 35. Vent end gas machining pipe; 351. Vent end gas machining port one; 352. Vent end gas machining port two; 4. Gas circuit board; 5. Standard end gas valve installation position; 6. Vent control gas valve installation position; 7. Inlet control gas valve installation position; 8. Test end gas valve installation position. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0015] Please refer to 1-4. One embodiment of this utility model is provided: a gas path valve island for an airtightness testing instrument, including a differential pressure sensor mounting fixture 1 and a direct pressure sensor mounting fixture 2. The differential pressure sensor mounting fixture 1 and the direct pressure sensor mounting fixture 2 are inserted into the gas path valve island 3. A gas path plate 4 is fixedly installed on the gas path valve island 3. The gas path valve island 3 has a standard end air valve mounting position 5, a vent control air valve mounting position 6, an inlet control air valve mounting position 7, and a test end air valve mounting position 8. The differential pressure sensor mounting fixture 1 and the direct pressure sensor mounting fixture 2 are installed on the gas path valve island 3 using bolts. Corresponding control air valves are installed at the standard end air valve mounting position 5, the vent control air valve mounting position 6, the inlet control air valve mounting position 7, and the test end air valve mounting position 8 to control the various pipelines inside the gas path valve island 3. Differential pressure sensors and direct pressure sensors are installed on the differential pressure sensor mounting fixture 1 and the direct pressure sensor mounting fixture 2. Airtightness testing is performed by controlling the various pipelines.

[0016] The gas valve island 3 is equipped with an inlet pipe 31, a test end processing pipe 32, an internal gas storage tank processing pipe 33, a standard end outlet processing pipe 34, and a venting end gas processing pipe 35. Each pipe is provided with a channel connecting to the upper panel of the gas valve island 3, which corresponds to the standard end gas valve installation position 5, the venting control gas valve installation position 6, the inlet control gas valve installation position 7, and the test end gas valve installation position 8.

[0017] The air intake pipe 31 includes an air inlet 311, which is connected to an air intake processing port 312 via a pipe; the test end processing pipe 32 includes a test end air intake processing port 321, which is connected to a test end air outlet processing port 322 via a pipe, and the test end air outlet processing port 322 is connected to a test end air outlet processing port 323 via a pipe; the standard end air outlet processing pipe 34 includes a standard end air outlet processing port 341, which is connected to a standard end air outlet processing port 342 via a pipe; the venting end air processing pipe 35 includes a venting end air processing port 351, which is connected to a venting end air processing port 352 via a pipe; the internal air storage tank processing pipe 33 includes an internal air storage tank processing port. For large-volume product testing, if a single air intake is insufficient, the internal air can be filled through the internal air storage tank processing port.

[0018] The internal gas storage tank is connected to the test end air inlet 321, the test end air outlet 322, the venting end air outlet 351, and the air inlet 312 via pipes.

[0019] Working principle: The test gas source is connected through the air inlet 311. The air inlet control valve at the air inlet control valve installation position 7 controls the entry of the test gas. At this time, the air valves at the standard end air valve installation position 5, the vent control air valve installation position 6, and the test end air valve installation position 8 are closed. The differential pressure sensor on the differential pressure sensor mounting fixture 1 collects the air pressure and processes it into test air pressure for large-capacity leakage determination and small-capacity test air pressure determination.

[0020] When the gas valves at standard end gas valve installation position 5 and test end gas valve installation position 8 are opened, the gas enters the test product end and standard end through test end gas outlet processing port 2 323 and standard end gas outlet processing port 2 341 respectively. The differential pressure sensor on differential pressure sensor mounting fixture 1 collects the differential pressure, processes it through software, and calculates the leakage value.

[0021] After the test, the valves at standard end valve installation position 5, vent control valve installation position 6, and test end valve installation position 8 are opened to release the test gas inside the air circuit board, and the test ends.

Claims

1. A gas circuit valve island for an airtightness testing instrument, comprising a differential pressure sensor mounting fixture (1) and a direct pressure sensor mounting fixture (2), characterized in that: The differential pressure sensor mounting fixture (1) and the direct pressure sensor mounting fixture (2) are inserted into the gas path valve island (3). The gas path valve island (3) is fixedly provided with a gas path plate (4). The gas path valve island (3) is provided with a standard end gas valve mounting position (5), a vent control gas valve mounting position (6), an inlet control gas valve mounting position (7), and a test end gas valve mounting position (8).

2. The air passage valve island of an airtightness testing instrument according to claim 1, characterized in that: The gas valve island (3) is provided with an air inlet pipe (31), a test end processing pipe (32), an internal gas storage tank processing pipe (33), a standard end gas outlet processing pipe (34), and a venting end gas processing pipe (35).

3. The air passage valve island of an airtightness testing instrument according to claim 2, characterized in that: The air intake pipe (31) includes an air inlet (311), which is connected to an air intake processing port (312) via a pipe; the test end processing pipe (32) includes a test end air intake processing port (321), which is connected to a test end air outlet processing port one (322) via a pipe, and the test end air outlet processing port one (322) is connected to a test end air outlet processing port two (323) via a pipe; the standard end The gas outlet processing pipeline (34) includes a standard end gas outlet processing port two (341), which is connected to a standard end gas outlet processing port one (342) through a pipeline; the gas venting end processing pipeline (35) includes a gas venting end processing port one (351), which is connected to a gas venting end processing port two (352) through a pipeline; the internal gas storage tank processing pipeline (33) includes an internal gas storage tank processing port.

4. The gas path valve island of an airtightness testing instrument according to claim 3, characterized in that: The internal gas storage tank processing port is connected to the test end air inlet processing port (321), the test end air outlet processing port (322), the venting end air processing port (351), and the air inlet processing port (312) via a pipeline.

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