Valve island structure of hydrogen and nitrogen detection instrument

Abstract

The utility model relates to hydrogen nitrogen detection instrument technical field, and disclose a kind of hydrogen nitrogen detection instrument valve island structure, including valve island, the top of the valve island is provided with valve block, the valve block is equipped with multiple solenoid valves, the side of the valve island is opened with hydrogen nitrogen gas source import, high-pressure gas source import, vacuumizing mouth and test mouth, the inside of the valve block is punched and communicated each solenoid valve, the solenoid valve is connected with valve block detection through screw, and it is provided with sealing ring at installation place, the top of the valve island is installed with control PCB. This hydrogen nitrogen detection instrument valve island structure, solenoid valve is integrated and installed to valve island, for testing process different time instant gas circuit switching, and hydrogen nitrogen gas source import, high-pressure gas source import, vacuumizing mouth, test mouth are integrated to the same side surface of valve island, instrument and external gas source and product are conveniently docked, the overall layout of this valve island structure is compact, occupies small space, external docking is convenient, there is no leakage.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen and nitrogen detection instruments, specifically to a valve island structure for a hydrogen and nitrogen detection instrument. Background Technology

[0002] The operation of a hydrogen-nitrogen detection instrument requires introducing hydrogen and nitrogen gas at a specified pressure into the test product. A sensor then detects the concentration of leaked hydrogen and nitrogen gas to determine the leakage rate. After testing, the product's internal hydrogen and nitrogen gas needs to be removed through high-pressure venting and vacuuming. While the instrument offers high accuracy, considering the possibility of large leaks, a positive or negative pressure leak detection process is necessary beforehand. In summary, the testing process involves introducing different gases—hydrogen and nitrogen, positive pressure gas, and negative pressure vacuum—into the product at different times.

[0003] Conventional technology connects solenoid valves via connectors and pipelines, and controls the solenoid valves to achieve gas path switching. However, connecting solenoid valves via pipelines and connectors has problems such as scattered layout, large space occupation, leakage at connection points, and inconsistent external interface orientation, which are inconvenient for standardized product production, make it difficult to ensure product quality, and make it difficult to ensure consistent product performance. Therefore, a valve island structure for hydrogen and nitrogen detection instruments is proposed. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a valve island structure for a hydrogen-nitrogen detection instrument, thereby solving the problems mentioned in the background section.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a valve island structure for a hydrogen and nitrogen detection instrument, comprising a valve island, a valve block being provided on the top of the valve island, a plurality of solenoid valves being installed on the valve block, and a hydrogen and nitrogen gas source inlet, a high-pressure gas source inlet, a vacuum port and a test port being provided on one side of the valve island.

[0006] Furthermore, the valve block has internal holes that connect to the various solenoid valves.

[0007] Furthermore, the solenoid valve is connected to the valve block by screws, and a sealing ring is provided at the mounting point.

[0008] Furthermore, the valve island is provided with an exhaust port on the same side as the test port.

[0009] Furthermore, a control PCB is mounted on the top of the valve island.

[0010] Furthermore, a pressure sensor is installed on the rear side of the valve island.

[0011] Furthermore, a sealing head is installed on the outer surface of the valve island.

[0012] Furthermore, foot pads are installed on the bottom outer surface of the valve island.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The valve island structure of this hydrogen and nitrogen detection instrument integrates a solenoid valve into the valve island for switching the gas path at different times during the test. The hydrogen and nitrogen gas source inlet, high-pressure gas source inlet, vacuum port, and test port are integrated on the same side of the valve island, which facilitates the connection of the instrument with external gas sources and products. The overall layout of the valve island structure is compact, occupies little space, is convenient for external connection, and is leak-free. Attached Figure Description

[0015] Figure 1 This is a frontal three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a top view schematic diagram of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the rear view of the present invention.

[0018] Figure 4 This is a side view of the structural plan of this utility model;

[0019] Figure 5 This is a schematic diagram illustrating the principle of this utility model.

[0020] In the diagram: 1. Valve island; 2. Control PCB; 3. Hydrogen / nitrogen gas inlet; 4. High-pressure gas inlet; 5. Test port; 6. Exhaust gas outlet; 7. Vacuum port; 8. Solenoid valve; 9. Sealing head; 10. Pressure sensor. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Example 1:

[0023] Please refer to the following: Figures 1-5This utility model provides a technical solution: a valve island 1 structure for a hydrogen and nitrogen detection instrument, including a valve island 1, a valve block on the top of the valve island 1, and multiple solenoid valves 8 installed on the valve block. One side of the valve island 1 has a hydrogen and nitrogen gas source inlet 3, a high-pressure gas source inlet 4, a vacuum port 5, and a test port 5. Specifically, the product under test is connected to the test port 5, an external vacuum source is used to evacuate through the vacuum port 7, an external high-pressure gas source is supplied with high-pressure gas through the high-pressure gas source inlet 4, and an external hydrogen and nitrogen gas source is supplied through the hydrogen and nitrogen gas source inlet 3. The hydrogen and nitrogen gas source inlet 3, the high-pressure gas source inlet 3, the vacuum port 7, and the test port 5 are integrated on the same side of the valve island 1, facilitating the connection of the instrument with external gas sources and products. The valve island 1 has a compact overall layout, occupies little space, is easy to connect externally, and is leak-free.

[0024] In this embodiment, the valve block is perforated and connected to each solenoid valve 8. Specifically, the above technical solution is adopted to facilitate the switching of the air path at different times during the test.

[0025] In this embodiment, the solenoid valve 8 is connected to the valve block detector by screws, and a sealing ring is provided at the installation point. Specifically, by adopting the above technical solution, the installation is convenient, the sealing performance is good, and the sealing quality and performance consistency of the product can be guaranteed to the greatest extent.

[0026] In this embodiment, the valve island 1 is provided with an exhaust port 6 on the same side as the test port 5. Specifically, during the test, the exhaust gas is discharged through the exhaust port 6.

[0027] In this embodiment, a control PCB2 is installed on the top of the valve island 1. Specifically, the control PCB2 program controls the operation of the solenoid valve 8 and monitors test data.

[0028] In this embodiment, a pressure sensor 10 is installed on the rear side of the valve island 1. Specifically, the pressure sensor 10 is used to monitor the gas pressure during the test.

[0029] In this embodiment, a sealing head 9 is installed on the outer surface of the valve island 1. Specifically, by setting the sealing head 9, the processing port of the valve island 1 is sealed to ensure that the inside of the valve island 1 is sealed and leak-free.

[0030] In this embodiment, a foot pad is installed on the bottom outer surface of the valve island 1. Specifically, the foot pad facilitates the installation and placement of the valve island 1 inside the testing instrument.

[0031] Working principle: In use, the product under test is connected to the test port 5. An external vacuum source evacuates the vacuum through the vacuum port. An external high-pressure gas source delivers high-pressure gas through the high-pressure gas source inlet 4. An external hydrogen-nitrogen gas source delivers hydrogen-nitrogen gas through the hydrogen-nitrogen gas source inlet 3. The hydrogen-nitrogen gas source inlet 3, the high-pressure gas source inlet 3, the vacuum port 7, and the test port 5 are integrated on the same side of the valve island 1, which facilitates the connection of the instrument with external gas sources and products. A pressure sensor 10 is installed to monitor the gas pressure during the test. The valve island 1 has a compact overall layout, occupies little space, is easy to connect externally, and is leak-free.

[0032] The control PCB2 is an existing structure, and the control circuit can be implemented by a person skilled in the art through simple programming. It is common knowledge in the field, and it is only used without modification. Therefore, the control method and circuit connection will not be described in detail.

[0033] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A valve island (1) structure for a hydrogen nitrogen detection instrument, comprising a valve island (1), characterized in that: The valve island (1) is provided with a valve block on the top, and multiple solenoid valves (8) are installed on the valve block. The valve island (1) is provided with a hydrogen-nitrogen gas source inlet (3), a high-pressure gas source inlet (4), a vacuum port (7) and a test port (5) on one side.

2. The structure of the valve island (1) of the hydrogen nitrogen detection instrument according to claim 1, characterized in that: The valve block has internal holes that connect to various solenoid valves (8).

3. The structure of the valve island (1) of the hydrogen nitrogen detection instrument according to claim 1, characterized in that: The solenoid valve (8) is connected to the valve block by screws and a sealing ring is provided at the installation point.

4. The structure of the valve island (1) of a hydrogen nitrogen detection instrument according to claim 1, characterized in that: The valve island (1) is provided with an exhaust port (6) on the same side as the test port (5).

5. The structure of the valve island (1) of a hydrogen nitrogen detection instrument according to claim 1, characterized in that: A control PCB (2) is mounted on the top of the valve island (1).

6. The structure of the valve island (1) of a hydrogen nitrogen detection instrument according to claim 1, characterized in that: A pressure sensor (10) is installed on the rear side of the valve island (1).

7. The structure of the valve island (1) of a hydrogen nitrogen detection instrument according to claim 1, characterized in that: A sealing head (9) is installed on the outer surface of the valve island (1).

8. The structure of the valve island (1) of a hydrogen nitrogen detection instrument according to claim 1, characterized in that: The bottom outer surface of the valve island (1) is fitted with foot pads.

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