Helium mass spectrometer leak detector test board

Abstract

The invention discloses a helium mass spectrometer leak detector test board, and relates to the technical field of helium mass spectrometer leak detector testing, the helium mass spectrometer leak detector test board comprises a test board support and a helium mass spectrometer leak detector, the top of the test board support is provided with a gas supply area and a leakage marking area, a leakage marking assembly is installed in the leakage marking area, and a gas supply assembly is installed in the gas supply area; the leakage marking assembly comprises a communicating pipe seat, a main connecting pipe and an electric proportional valve, the upper side and the lower side of the communicating pipe seat are each provided with a plurality of leakage marking standard parts, the front side and the rear side of the communicating pipe seat are each provided with a plurality of control valves, and the electric proportional valve is arranged at the end of the communicating pipe seat. According to the invention, multiple groups of leakage standard components with different standard leakage rates can be integrated and installed on the test board, the complexity of replacing leakage standard components with different specifications for multiple times by the helium mass spectrometer leakage detector is eliminated, the helium mass spectrometer leakage detector and the test board only need to be in single pipeline butt joint, the problem that the airtightness is influenced by multiple disassembly and assembly is avoided, and the test efficiency is improved. The work efficiency and the test precision of the calibration test of the helium mass spectrometer leak detector can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of helium mass spectrometer leak detector testing, in particular to a helium mass spectrometer leak detector testing platform. Background Art

[0002] The helium mass spectrometer leak detector uses helium as a tracer gas and mass spectrometry technology to detect and quantify leaks. It can detect tiny leaks in detection equipment or systems, quickly locate leaks and ensure the sealing of the equipment. The test bench is used to test the reliability and accuracy of the helium mass spectrometer leak detector to ensure that the helium mass spectrometer leak detector can accurately and reliably detect leaks of different levels.

[0003] In the prior art, the calibration test of the helium mass spectrometer leak detector before use is mainly carried out by connecting a leak source with a known leak rate to the helium mass spectrometer leak detector, and performing a leak rate detection on the leak source with a known leak rate by the helium mass spectrometer leak detector. The calibration test result of the helium mass spectrometer leak detector can be obtained by comparing the detection result with the known leak rate calibrated on the leak source, thereby obtaining the result of whether the helium mass spectrometer leak detector is faulty.

[0004] However, in the actual testing process, the calibration test of the helium mass spectrometer leak detector requires multiple tests using multiple leak sources. Each leak source on the current test bench is stored separately, and each test requires the corresponding leak source to be taken out and installed separately. The airtightness of the installation will directly affect the test accuracy, which results in a large workload for the testing of the helium mass spectrometer leak detector and the need to frequently disassemble and replace the leak source. At the same time, repeated disassembly and assembly makes it difficult to control the airtightness of the connection between the leak source and the helium mass spectrometer leak detector, which increases the probability of operating errors affecting the test accuracy and is difficult to meet the use requirements of the test work. For this reason, a helium mass spectrometer leak detector test bench is proposed. Summary of the invention

[0005] The object of the present invention is to provide a helium mass spectrometer leak detector test bench to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a helium mass spectrometer leak detector test bench, comprising a test bench bracket and a helium mass spectrometer leak detector, wherein a gas supply area and a leak mark area are respectively provided on the top of the test bench bracket, wherein the leak mark area is located above the helium mass spectrometer leak detector, wherein a leak mark assembly is installed in the leak mark area, and wherein a gas supply assembly is installed in the gas supply area, wherein the leak mark assembly comprises:

[0007] A connecting pipe seat, wherein a plurality of standard parts for missing marks are arranged in parallel and at intervals on both upper and lower sides of the connecting pipe seat, and a plurality of control valves are arranged in parallel and at intervals on both front and rear sides of the connecting pipe seat, and the plurality of control valves correspond to the plurality of standard parts for missing marks one by one;

[0008] A main connecting pipe, which is used for connecting the helium mass spectrometer leak detector with the connecting pipe seat;

[0009] An electric proportional valve is arranged at the end of the connecting pipe seat, and is used to control the helium to enter the connecting pipe seat.

[0010] Preferably, the upper and lower outer walls of the connecting pipe seat are fixedly connected with leakage pipe joints, which are used to connect and fix the leakage standard parts on the connecting pipe seat, and the leakage pipe joints located on the upper and lower sides of the connecting pipe seat are staggered front and back.

[0011] Preferably, a hollow main pipeline is fixedly connected to the interior of the connecting pipe seat, the leakage standard part is connected to the inner cavity of the main pipeline through a control valve, and the top end of the main pipe is fixedly connected to the interior of the main pipeline.

[0012] Preferably, a valve connection seat for fixing the control valve on the connecting pipe seat is fixedly provided on the outer wall of the connecting pipe seat, and a main pipe connection is fixedly connected to the side of the valve connection seat close to the main pipeline, and both ends of the main pipe connection are respectively connected to the main pipeline and the control valve.

[0013] Preferably, the valve connecting seat is fixedly connected to a slave pipe connection on one side close to the main pipe connection, one end of the slave pipe connection is communicated with the control valve, the other end of the main pipe connection is fixedly connected to a standard leakage pipe connection, and the end of the standard leakage pipe connection away from the slave pipe connection is communicated with a standard leakage pipe joint at a corresponding position.

[0014] Preferably, a fixing bracket is fixedly arranged in the mark leakage area, connecting recesses are provided at both ends of the connecting pipe seat, and a settlement hole for fixing the connecting pipe seat on the fixing bracket is provided at the bottom of the connecting recess.

[0015] Preferably, the gas supply assembly includes a large gas supply bottle and a small gas supply bottle, which are fixedly installed in the gas supply area in a horizontal interval, and the ports of the large gas supply bottle and the small gas supply bottle are respectively connected to the electrical proportional valves at corresponding positions, and two air inlet connectors are symmetrically provided at the end on the inner side of the connecting pipe seat, and the electrical proportional valve is fixedly connected to the main pipeline via the air inlet connector.

[0016] Preferably, two helium blowing fans are installed at intervals on the top of the test bench bracket, and the two helium blowing fans are respectively connected to the inner cavities of the air supply area and the mark leakage area.

[0017] Preferably, an operating table is provided in the middle of the test bench bracket, a computer and a printer are installed on the operating table, and the computer is electrically connected to the printer and the helium mass spectrometer leak detector respectively through wires.

[0018] Preferably, a leak detector storage area for accommodating a helium mass spectrometer leak detector is provided on one side of the bottom of the test bench bracket, a decibel meter is fixedly installed on one side of the leak detector storage area, and a barcode scanner is provided above the decibel meter, and the decibel meter and the barcode scanner are electrically connected to a computer via wires.

[0019] Technical effects and advantages of the present invention:

[0020] (1) The helium mass spectrometer leak detector test bench provided by the present invention can integrate and install multiple groups of standard leak standards with different specifications of leakage rates on the test bench, so that the helium mass spectrometer leak detector can continuously perform multiple standard leak calibration tests of different specifications on the test bench, eliminating the tediousness of repeatedly changing standard leak standards of different specifications of the helium mass spectrometer leak detector. At the same time, only a single pipeline connection is required between the helium mass spectrometer leak detector and the test bench, avoiding the problem of multiple disassembly and assembly affecting the air tightness, thereby helping to improve the work efficiency and test accuracy of the calibration test of the helium mass spectrometer leak detector.

[0021] (2) In the leak detection assembly provided by the present invention, a main pipeline is arranged in the connecting pipe seat to connect with the gas supply assembly so that helium can be transported in a centralized manner. At the same time, the leak detection standard parts, the control valve and the main pipeline at the corresponding positions are matched through the main pipe connection, the slave pipe connection and the leak detection pipe connection, so that the leak detection standard parts are connected with the control valve and then connected with the main pipeline through the control valve. This can conveniently control the leak detection standard parts at the required positions to be connected with the main pipeline for helium filling, making the switching between different leak detection standard parts more convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0023] Figure 2 It is a schematic diagram of the internal three-dimensional structure of the back side of the present invention.

[0024] Figure 3 It is a three-dimensional structural schematic diagram of the leak detection assembly of the present invention.

[0025] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the connecting pipe seat of the present invention.

[0026] In the figure: 100, test bench bracket; 101, leak detector storage area; 102, operating table; 103, gas supply area; 104, decibel meter; 105, barcode scanner; 106, computer; 107, printer; 108, helium fan; 109, fixed bracket; 110, leak mark area; 200, helium mass spectrometer leak detector; 300, gas supply assembly; 301, large gas supply bottle; 302, small gas supply bottle; 400, leak mark assembly; 401, connecting pipe seat; 402, main pipe; 403, leak mark pipe joint; 404, control valve; 405, leak mark standard part; 406, electric proportional valve; 407, main pipeline; 408, connecting recess; 409, air inlet joint; 410, valve connection seat; 411, main pipe joint; 412, slave pipe joint; 413, leak mark pipe joint. DETAILED DESCRIPTION

[0027] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0028] The present invention provides Figure 1-Figure 4A helium mass spectrometer leak detector test bench shown in the figure includes a test bench bracket 100 and a helium mass spectrometer leak detector 200. A gas supply area 103 and a leak mark area 110 are respectively provided on the top of the test bench bracket 100. The leak mark area 110 is located above the helium mass spectrometer leak detector 200. A leak mark assembly 400 is installed in the leak mark area 110. A gas supply assembly 300 is installed in the gas supply area 103. Helium is provided to the leak mark assembly 400 in the leak mark area 110 through the gas supply assembly 300 in the gas supply area 103 to meet the test requirements of using helium as a tracer gas. Two helium blowing fans 108 are installed at intervals on the top of the test bench bracket 100. The two helium blowing fans 108 are respectively connected to the inner cavities of the gas supply area 103 and the leak mark area 110. The helium blowing fans 108 are arranged The test bench bracket 100 is provided with an operating table 102 in the middle part, on which a computer 106 and a printer 107 are installed. The computer 106 is electrically connected to the printer 107 and the helium mass spectrometer leak detector 200 through wires. The data changes of the test process can be intuitively performed through the computer 106. At the same time, the computer 106 can also be used as a control terminal, so that the test personnel can perform various operations of the helium mass spectrometer leak detector 200 on the test bench during the test process and revise the data during the test process through the computer 106. The entire test process is more convenient. A leak detector storage area 101 for accommodating the helium mass spectrometer leak detector 200 is provided on one side of the bottom of the test bench bracket 100. The leak detector storage area 101 satisfies the fixed-point placement of the helium mass spectrometer leak detector 200, making the positioning of the helium mass spectrometer leak detector 200 in the test bench more convenient and accurate. At the same time, the leak detector storage area 101 makes the pipeline connection between the helium mass spectrometer leak detector 200 and the leak mark component 400 on the test bench more convenient, thereby making the test of the helium mass spectrometer leak detector 200 on the test bench more standardized. A decibel meter 104 is fixedly installed on one side of the leak detector storage area 101, and a barcode scanner 105 is provided above the decibel meter 104, and the decibel meter 104 and the barcode scanner 105 are both electrically connected to the computer 106 through wires. The instrument 104 is arranged at one side of the leak detector storage area 101. During the test after the helium mass spectrometer leak detector 200 in the area is connected to the leak mark assembly 400 in the upper leak mark area 110 through a pipeline, the decibel meter 104 can be used to detect the decibel value of the sound in the leak detector storage area 101. According to the change rate of the decibel value and the intensity of the decibel value, whether there is looseness and leakage in the connection between the helium mass spectrometer leak detector 200 and the leak mark assembly 400 can be monitored for leakage, thereby ensuring the airtightness of the connection between the helium mass spectrometer leak detector 200 and the leak mark assembly 400, eliminating the problem of unstable connection affecting the test accuracy of the helium mass spectrometer leak detector 200, which is helpful to improve the accuracy of the calibration test of the helium mass spectrometer leak detector 200.Furthermore, the installation of the barcode scanner 105 can scan the code of the helium mass spectrometer leak detector 200 being tested, so that the model and specifications of the helium mass spectrometer leak detector 200 being tested can be entered into the system of the computer 106 for storage, which is convenient for distinguishing different helium mass spectrometer leak detectors 200, and also convenient for subsequent retrieval of test data by scanning the barcode scanner 105, making it easier to find and read the test data of different helium mass spectrometer leak detectors 200.

[0029] The gas supply assembly 300 includes a large gas supply bottle 301 and a small gas supply bottle 302, which are fixedly installed in the gas supply area 103 in a horizontal interval, and the ports of the large gas supply bottle 301 and the small gas supply bottle 302 are respectively connected to the electrical proportional valve 406 at the corresponding position, and the end of the inner side of the connecting pipe seat 401 is symmetrically provided with two air inlet joints 409, and the electrical proportional valve 406 is fixedly connected to the main pipeline 407 through the air inlet joint 409. The large gas supply bottle 301 and the small gas supply bottle 302 are respectively connected to the air inlet joint 409 on the connecting pipe seat 401 through the electrical proportional valve 406, and the large gas supply bottle 301 or the small gas supply bottle 302 can be realized through the air inlet joint 409. The helium is transported to the main pipeline 407, wherein the large gas supply bottle 301 generally has a capacity of 10L, and the small gas supply bottle 302 has a capacity of 5L. The large gas supply bottle 301 and the small gas supply bottle 302 are supplied separately or in combination to meet the helium demand for different tests, and at the same time, the flexibility of the test can be improved. According to the test requirements of the helium mass spectrometer leak detector 200 to be tested, the gas supply of the large gas supply bottle 301 and the small gas supply bottle 302 can be flexibly adjusted to achieve the switching of gas supply from different gas supply bottles; in addition, through the use of the large gas supply bottle 301 or the small gas supply bottle 302, the corresponding capacity can be selected according to the use requirements to meet the stable supply of helium during the test, so as to achieve the purpose of ensuring the test accuracy.

[0030] Among them, the leak marking component 400 includes a connecting pipe seat 401, a main connecting pipe 402 and an electric proportional valve 406. It should be noted that a vacuum gauge needs to be installed between the main connecting pipe 402 and the interface of the helium mass spectrometer leak detector 200 for connection, so as to detect the vacuum degree of the leak picking port. The vacuum degree of the leak picking port after breaking the air is detected by the vacuum gauge, and the detected value is compared with P1 (usually a preset reference vacuum degree value, which is the standard vacuum degree that needs to be achieved during the test, used to compare the actual measured vacuum degree, ensure that the test environment meets expectations, and ensure the accuracy of the test results) to determine whether the test environment meets expectations. A fixed bracket 109 is fixedly arranged in the leak marking area 110, and both ends of the connecting pipe seat 401 are provided with connecting recessed portions 408, and the bottom of the connecting recessed portion 408 is provided with a connecting portion for fixing the connecting pipe seat 401 on the fixed bracket 109. The sinking hole is fixedly connected to the fixed bracket 109 by threaded fasteners (bolts or screws, etc.) passing through the sinking hole, so that the connecting pipe seat 401 in the mark leakage assembly 400 can be firmly connected to the fixed bracket 109. The upper and lower sides of the connecting pipe seat 401 are parallelly and spaced apart with multiple mark leakage standard parts 405 (the mark leakage standard parts 405 are generally mark leakage bottles). In a preferred embodiment, three mark leakage standard parts 405 on the connecting pipe seat 401 can be respectively arranged on the upper and lower surfaces. The leakage rates of the three mark leakage standard parts 405 located on the upper surface of the connecting pipe seat 401 can be set to 10^-5cc / s, 10^-6cc / s and 10^-7cc / s; the leakage rates of the three mark leakage standard parts 405 located on the lower surface of the connecting pipe seat 401 can be set to 10^-8cc / s, 10^-9cc / s and 10^-10cc / s;The upper and lower outer walls of the connecting pipe seat 401 are fixedly connected with standard leakage pipe joints 403. One or two more standard leakage pipe joints 403 can be reserved to meet the needs of vacuuming or other equipment installation. The standard leakage pipe joints 403 are used for the connection and fixation of the standard leakage standard parts 405 on the connecting pipe seat 401. The standard leakage pipe joints 403 are convenient for fixing the standard leakage standard parts 405 and the connecting pipe seat 401. The standard leakage pipe joints 403 located on the upper and lower sides of the connecting pipe seat 401 are staggered front to back. By arranging the standard leakage standard parts 405 on the upper and lower sides of the connecting pipe seat 401 to be staggered front to back, they can be matched with the control valves 404 located on the front and rear sides of the connecting pipe seat 401, thereby facilitating the connection and assembly of the standard leakage standard parts 405 and the control valves 404. A plurality of control valves 404 are arranged in parallel and spaced on the front and rear sides of the connecting pipe seat 401. The plurality of control valves 404 and the plurality of standard leakage standard parts The main pipe 402 is used for the connection between the helium mass spectrometer leak detector 200 and the connecting pipe seat 401. The electrical proportional valve 406 is set at the end position of the connecting pipe seat 401. The electrical proportional valve 406 is used to control the helium gas to enter the connecting pipe seat 401. The amount of helium gas filled into the standard leakage standard part 405 used by the gas supply component 300 is controlled by the electrical proportional valve 406, and the standard leakage standard part 405 connected to the connecting pipe seat 401 is controlled by the control valve 404, so that the gas supply component 300 can be charged with a preset amount of helium gas into the standard leakage standard part 405 at the corresponding position, and then the main pipe 402 is connected to the helium mass spectrometer leak detector 200, and the leakage rate of the standard leakage standard part 405 can be detected by the helium mass spectrometer leak detector 200. According to the test result, the leakage rate value on the standard leakage standard part 405 can be compared to obtain the test of the accuracy of the helium mass spectrometer leak detector 200. ;

[0031] Furthermore, a hollow main pipe 407 is fixedly connected to the interior of the connecting pipe seat 401, and the leakage standard part 405 is connected to the inner cavity of the main pipe 407 through the control valve 404. The top of the main pipe 402 is fixedly connected to the interior of the main pipe 407. The main pipe 407 is used to connect with multiple leakage standard parts 405, and then the control valve 404 is used to control the corresponding leakage standard parts 405 to be connected or closed with the main pipe 407, so that the leakage standard parts 405 at different positions can be used as test props, and the purpose of integrating multiple leakage standard parts 405 into the connecting pipe seat 401 is achieved, making the entire test bench more integrated. At the same time, only by adjusting the start and stop of the control valve 404, the use of different standard leakage standard parts 405 can be switched, making the operation of replacing the standard leakage standard part 405 for testing more convenient and efficient. At the same time, there is no need to repeatedly disassemble and assemble the connection with the helium mass spectrometer leak detector 200 to ensure the airtightness of the connection position and reduce the influencing factors in the test process, thereby helping to improve the test accuracy; a valve connecting seat 410 for fixing the control valve 404 on the connecting pipe seat 401 is fixedly provided on the outer wall of the connecting pipe seat 401, and a main pipe 411 is fixedly connected to the side of the valve connecting seat 410 close to the main pipeline 407, and the two ends of the main pipe 411 are respectively The valve connecting seat 410 is connected to the main pipeline 407 and the control valve 404. The side of the valve connecting seat 410 close to the main pipe 411 is fixedly connected with a slave pipe 412. One end of the slave pipe 412 is connected to the control valve 404. The other end of the main pipe 411 is fixedly connected with a standard leakage pipe 413. The end of the standard leakage pipe 413 away from the slave pipe 412 is connected to the standard leakage pipe joint 403 at the corresponding position. The arrangement of the valve connecting seat 410 can make the installation of the control valve 404 more convenient and stable. At the same time, the matching arrangement of the main pipe 411 and the slave pipe 412 on the valve connecting seat 410 not only makes the control valve 404 pass through the valve connecting seat 410, but also makes the control valve 404 It can be connected with the main pipeline 407 and can also be connected with the standard leakage standard part 405. The valve connecting seat 410 can be formed by cooperating with the standard leakage pipe joint 403 to connect the standard leakage pipe joint 403, so that the standard leakage standard part 405 can be connected with the main pipeline 407 through the control valve 404, so that the gas in the main pipeline 407 needs to be controlled by the start and stop of the control valve 404 to allow the standard leakage standard part 405 to be connected with the main pipeline 407, thereby realizing the control of the activation of multiple standard leakage standard parts 405 on the connecting pipe seat 401, so as to switch the standard leakage standard parts 405 with different leakage rates according to the test requirements.

[0032] Finally, it should be noted that the above is only 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, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A helium mass spectrometer leak detector test bench, comprising a test bench support (100) and a helium mass spectrometer leak detector (200), characterized in that: The top of the test bench support (100) is respectively provided with an air supply area (103) and a leak mark area (110), the leak mark area (110) is located above the helium mass spectrometer leak detector (200), a leak mark assembly (400) is installed in the leak mark area (110), and an air supply assembly (300) is installed in the air supply area (103), and the leak mark assembly (400) comprises: A connecting pipe seat (401), wherein a plurality of standard parts (405) are arranged in parallel and at intervals on both upper and lower sides of the connecting pipe seat (401), and a plurality of control valves (404) are arranged in parallel and at intervals on both front and rear sides of the connecting pipe seat (401), and the plurality of control valves (404) correspond one to one with the plurality of standard parts (405); A main connecting pipe (402), wherein the main connecting pipe (402) is used for connecting the helium mass spectrometer leak detector (200) with the connecting pipe seat (401); An electric proportional valve (406), the electric proportional valve (406) is arranged at the end position of the connecting pipe seat (401), and the electric proportional valve (406) is used to control the helium gas to enter the connecting pipe seat (401).

2. A helium mass spectrometer leak detector test bench according to claim 1, characterized in that: The outer walls on both upper and lower sides of the connecting pipe seat (401) are fixedly connected with leak-marking pipe joints (403), and the leak-marking pipe joints (403) are used for connecting and fixing the leak-marking standard part (405) on the connecting pipe seat (401), and the leak-marking pipe joints (403) located on the upper and lower sides of the connecting pipe seat (401) are arranged in a front-to-back staggered manner.

3. A helium mass spectrometer leak detector test bench according to claim 2, characterized in that: The interior of the connecting pipe seat (401) is fixedly connected to a hollow main pipe (407), the standard leak component (405) is connected to the inner cavity of the main pipe (407) through a control valve (404), and the top end of the main pipe (402) is fixedly connected to the interior of the main pipe (407).

4. A helium mass spectrometer leak detector test bench according to claim 3, characterized in that: A valve connection seat (410) for fixing the control valve (404) on the connecting pipe seat (401) is fixedly provided on the outer wall of the connecting pipe seat (401); a main pipe connection (411) is fixedly connected to one side of the valve connection seat (410) close to the main pipe (407); and two ends of the main pipe connection (411) are respectively connected to the main pipe (407) and the control valve (404).

5. A helium mass spectrometer leak detector test bench according to claim 4, characterized in that: A side of the valve connection seat (410) close to the main pipe connection (411) is fixedly connected to a secondary pipe connection (412); one end of the secondary pipe connection (412) is in communication with the control valve (404); the other end of the main pipe connection (411) is fixedly connected to a standard leakage pipe connection (413); one end of the standard leakage pipe connection (413) away from the secondary pipe connection (412) is in communication with a standard leakage pipe joint (403) at a corresponding position.

6. A helium mass spectrometer leak detector test bench according to claim 5, characterized in that: A fixing bracket (109) is fixedly arranged in the mark leakage area (110), and both ends of the connecting pipe seat (401) are provided with connecting recessed portions (408), and the bottom of the connecting recessed portions (408) is provided with a sinking hole for fixing the connecting pipe seat (401) on the fixing bracket (109).

7. A helium mass spectrometer leak detector test bench according to claim 6, characterized in that: The gas supply assembly (300) comprises a large gas supply bottle (301) and a small gas supply bottle (302), wherein the large gas supply bottle (301) and the small gas supply bottle (302) are fixedly installed in a horizontally spaced manner inside the gas supply area (103), and the ports of the large gas supply bottle (301) and the small gas supply bottle (302) are respectively connected to the electrical proportional valve (406) at the corresponding positions, and the inner end of the connecting pipe seat (401) is symmetrically provided with two gas inlet connectors (409), and the electrical proportional valve (406) is fixedly connected to the main pipeline (407) through the gas inlet connector (409).

8. A helium mass spectrometer leak detector test bench according to claim 7, characterized in that: Two helium blowing fans (108) are installed at intervals on the top of the test bench support (100), and the two helium blowing fans (108) are respectively connected to the inner cavities of the air supply area (103) and the mark leakage area (110).

9. A helium mass spectrometer leak detector test bench according to claim 8, characterized in that: An operating table (102) is provided in the middle of the test bench support (100), a computer (106) and a printer (107) are installed on the operating table (102), and the computer (106) is electrically connected to the printer (107) and the helium mass spectrometer leak detector (200) respectively through wires.

10. A helium mass spectrometer leak detector test bench according to claim 9, characterized in that: A leak detector storage area (101) for accommodating a helium mass spectrometer leak detector (200) is provided on one side of the bottom of the test bench support (100); a decibel meter (104) is fixedly installed on one side of the leak detector storage area (101); a barcode scanner (105) is provided above the decibel meter (104); and both the decibel meter (104) and the barcode scanner (105) are electrically connected to a computer (106) via a wire.

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