Portable helium mass spectrometer leak detector and use method thereof

Abstract

The invention discloses a portable helium mass spectrometer leak detector and a use method thereof. The portable helium mass spectrometer leak detector comprises a support shell, wherein the side of the support shell is provided with a first overhaul plate; a mass spectrum tube, an ion source, a mass analyzer and an ion detector are arranged in the leak detector main body, a control screen is arranged on the side part of the leak detector main body, and a second overhaul plate is arranged on the side of the leak detector main body; the protection mechanism is arranged outside the supporting shell, and the protection mechanism is used for carrying out anti-collision protection on the exterior of the supporting shell; the end part of the pump body is provided with a vacuum gas-guide tube, and the end part of the vacuum gas-guide tube is connected with the leak detector main body. By means of the arrangement mode that the protection frame, the protection plate, the fixing pad, the assembling plate, the mounting frame, the supporting frame and the connecting mechanism are matched, the fixing pad elastically supports the protection plate, the protection frame conducts external anti-collision blocking on the supporting shell, and the assembling plate and the supporting frame are inserted in a penetrating mode, so that anti-collision protection on the exterior of the supporting shell is facilitated; the use safety of the supporting shell is improved.

Description

Technical Field

[0001] The present invention relates to the field of helium mass spectrometers, and particularly to a portable helium mass spectrometer and a method for using the same. Background Art

[0002] A helium mass spectrometer is usually a mass spectrometer made using the principle of magnetic deflection, mainly used to detect the reaction sensitivity of the leak detection gas helium. A helium mass spectrometer can use helium as the leak detection gas and detect helium using a gas analyzer to perform leak detection.

[0003] Existing helium mass spectrometers generally include a housing, moving wheels, a mass spectrometry tube, an ion source, a mass analyzer, an ion detector, a vacuum system, and an electronic system, etc. The mass spectrometry tube is the core part of the leak detector, consisting of an ion source, a mass analyzer, and an ion detector. The ion source is responsible for generating helium ions, the mass analyzer is used to separate ions according to their mass differences, the ion detector is used to detect ion signals and convert them into electrical signals for output. The vacuum system consists of a molecular pump, a mechanical pump, a solenoid valve, and a vacuum gauge, and its main function is to obtain the vacuum environment required for the mass spectrometry process and complete the evacuation of the part to be inspected and the introduction of helium. The electronic system is used to control each component of the leak detector, such as adjusting the acceleration voltage, collecting and analyzing detection signals, etc. In addition, it also includes a power supply, a communication interface, a display screen, etc., for the user to operate and observe the detection results.

[0004] The ionization principle of a helium mass spectrometer is mainly achieved through an ionization chamber in the mass spectrometry tube. In the ionization chamber, the thermoelectrons emitted by the filament oscillate back and forth in the ionization chamber, colliding with the gas in the ionization chamber and the helium gas entering the ionization chamber through the leak hole of the part to be inspected, ionizing them into positive ions. These ions enter the magnetic field under the action of the acceleration electric field, and due to the action of the Lorentz force, they are deflected to form an arc-shaped orbit. Ions of different masses have different deflection radii, so they can be separated. After deflection, the ions enter the receiving electrode, are collected and converted into electrical signals. The intensity of the electrical signal is proportional to the concentration of helium gas. By measuring the intensity of the electrical signal, it can be judged whether there is a leak and the size of the leak.

[0005] The moving wheels are placed at the bottom of the housing, and thus the helium mass spectrometer can be pushed to move for portable use. However, during the movement of the helium mass spectrometer, the housing may accidentally touch surrounding objects, resulting in deformation and damage of the housing, affecting the safety and aesthetics of the components inside the housing, and the cost of customizing the housing is relatively high. Therefore, it is necessary to provide anti-collision protection for the housing when the helium mass spectrometer is moving. Summary of the Invention

[0006] The purpose of the present invention is to provide a portable helium mass spectrometer and a method for using the same to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solutions: A portable helium mass spectrometer leak detector, comprising:

[0008] A support housing with a first maintenance plate provided on its side;

[0009] A leak detector main body, inside which a mass spectrometer tube, an ion source, a mass analyzer and an ion detector are installed. A control screen is installed on the side of the leak detector main body, and a second maintenance plate is provided on the side of the leak detector main body;

[0010] A protection mechanism, arranged outside the support housing, and the protection mechanism is used for anti-collision protection of the outside of the support housing;

[0011] A pump body, installed inside the support housing, with a vacuum duct installed at the end of the pump body, and the end of the vacuum duct is connected to the leak detector main body.

[0012] Preferably, it further includes:

[0013] A connection mechanism, arranged on the sides of the support housing and the leak detector main body, and the connection mechanism is used for serially connecting the first maintenance plate and the second maintenance plate and supporting the protection mechanism;

[0014] A limiting mechanism, arranged on the connection mechanism, and the limiting mechanism is used for fixing the connection mechanism to the support housing and the leak detector main body.

[0015] Preferably, the protection mechanism includes:

[0016] A protection frame, covering the outside of the support housing, and an installation groove is provided on the side of the protection frame;

[0017] A protection plate, located inside the installation groove;

[0018] A fixing pad, fixedly connected to the side of the inner wall of the installation groove, and the side of the fixing pad is fixedly connected to the protection plate;

[0019] An installation part, arranged inside the protection frame, and the installation part is used for connecting the protection frame to the connection mechanism.

[0020] Preferably, the installation part includes:

[0021] An assembly plate, fixedly connected to the side of the inner wall of the protection frame;

[0022] An installation frame, fixedly connected to the top of the assembly plate, and a slotted opening is provided at the top of the installation frame;

[0023] A support frame, arranged on the connection mechanism, and the assembly plate is slidably inserted into the inner cavity of the support frame.

[0024] Preferably, the connection mechanism includes:

[0025] A bearing plate body is located on the side of the first inspection plate and the second inspection plate, and a supporting plate body is arranged on the side of the bearing plate body;

[0026] A partition plate is fixedly connected between the bearing plate body and the supporting plate body;

[0027] Support columns are fixedly connected between the bearing plate body and the supporting plate body, and the ends of the support columns are at the sides of the first inspection plate and the second inspection plate.

[0028] Preferably, the connection mechanism further includes:

[0029] An installation frame is fixedly connected to the sides of the bearing plate body and the supporting plate body;

[0030] A positioning plate is located at the bottom of the installation frame. The positioning plate is fixedly connected to the sides of the support housing and the leak detector main body, and a through groove is formed at the top of the positioning plate.

[0031] Preferably, the limiting mechanism includes:

[0032] A series connection frame is slidably inserted and connected into the inner cavity of the installation frame, and the series connection frame is slidably inserted and connected into the inner cavities of the slotted groove and the through groove;

[0033] A connection seat is fixedly connected to the side of the series connection frame;

[0034] Auxiliary columns are fixedly connected to the side of the leak detector main body, and the auxiliary columns are located between adjacent connection seats;

[0035] A locking column is slidably arranged on the auxiliary column, and the locking column is slidably inserted and connected into the inner cavity of the connection seat.

[0036] Preferably, the limiting mechanism further includes:

[0037] A sliding groove is formed on the side of the auxiliary column, and the locking column is slidably inserted and connected into the inner cavity of the sliding groove;

[0038] An auxiliary plate is fixedly connected to the top end of the inner wall of the sliding groove;

[0039] A moving frame is slidably arranged on the side of the auxiliary plate. A moving rod is fixedly inserted and connected inside the moving frame, and the outer wall of the moving rod is slidably inserted and connected to the auxiliary plate;

[0040] A spring is sleeved on the outside of the moving rod. One end of the spring is fixedly connected to the auxiliary plate, and the other end of the spring is fixedly connected to the locking column.

[0041] Preferably, a push plate is fixedly connected to the top of the movable frame. Insertion grooves are symmetrically formed at the top of the auxiliary column. A square plate is installed inside the insertion grooves, and a sliding groove adapted to the movable frame is formed at the top of the square plate.

[0042] The present invention also provides a method for using a portable helium mass spectrometer leak detector, including the following specific steps of use:

[0043] Step 1: When it is necessary to move the support housing and the leak detector main body, the protective frame and the protective plate provide external anti-collision protection for the bottom of the support housing. The fixed pad provides buffer support for the protective plate, and the bearing plate body, the supporting plate body, and the partition plate provide partition protection for the side parts of the leak detector main body and the support housing;

[0044] Step 2: If it is necessary to perform maintenance on the inside of the support housing and the leak detector main body, at this time, push the two push plates simultaneously to move. The push plate drives the movable frame to move. The movable frame slides inside the sliding groove, and at the same time drives the movable rod to move. The movable rod pulls the locking column to move, so that the locking column compresses the spring and disengages from the inside of the connecting seat at the same time. At this time, the position limit of the series connection frame is released, and then the series connection frame is pulled up, so that the series connection frame slides on the installation frame and the positioning plate, and at the same time slides on the installation rack, and then the series connection frame is pulled out upwards;

[0045] Step 3: At this time, the position limits of the series connection frame and the assembly plate are released. Then, first horizontally pull the protective frame, so that the protective frame drives the assembly plate to disengage from the support frame, and then pull out the bearing plate body and the supporting plate body outwards, so that the first inspection plate and the second inspection plate are removed, and then the inside of the leak detector main body and the support housing can be exposed, and then maintenance and inspection can be carried out.

[0046] The technical effects and advantages of the present invention:

[0047] (1) By the cooperation of the protective frame, the protective plate, the fixed pad, the assembly plate, the installation frame, the support frame and the connection mechanism, the fixed pad elastically supports the protective plate, the protective frame provides external anti-collision partition for the support housing, and the assembly plate is inserted into the support frame, which is beneficial to provide anti-collision protection for the outside of the support housing and improve the safety of using the support housing;

[0048] (2) The present invention uses a setting method in which a bearing plate body, a partition plate, a support column, a mounting frame, a positioning plate, a first inspection plate, and a supporting plate body cooperate with each other. The bearing plate body and the supporting plate are connected to the first inspection plate and the second inspection plate through the support column. The mounting frame corresponds to the positioning plate, and the bearing plate body and the supporting plate body support the support frame and the installation of the protective frame. Furthermore, it is beneficial to connect the first inspection plate and the second inspection plate in series, so that the first inspection plate and the second inspection plate can be removed simultaneously, so that the interiors of the support housing and the leak detector main body 2 are simultaneously exposed, facilitating maintenance and repair without having to disassemble one by one, improving operability;

[0049] (3) The present invention uses a setting method in which a series connection frame, a connection seat, an auxiliary column, a square plate, a locking column, an auxiliary plate, a moving frame, a moving rod, a spring, and a connection mechanism cooperate with each other. The series connection frame connects multiple mounting frames and positioning plates in series, and at the same time connects the mounting frames in series. Furthermore, it is beneficial to install and disassemble the first inspection plate, the second inspection plate, and the protective frame simultaneously, facilitating the improvement of the disassembly efficiency and having high flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 is a schematic diagram of the overall structure of the present invention.

[0051] Figure 2 is a schematic diagram of the structure at the support frame of the present invention.

[0052] Figure 3 is a schematic diagram of the front sectional structure of the present invention.

[0053] Figure 4 is a schematic diagram of the front structure at the mounting frame of the present invention.

[0054] Figure 5 is the present invention Figure 2 the enlarged schematic diagram of the structure at A in.

[0055] Figure 6 is a schematic diagram of the front sectional structure at the auxiliary column of the present invention.

[0056] Figure 7 is a schematic diagram of the front sectional structure at the support housing of the present invention.

[0057] In the figure: 1. Support housing; 2. Leak detector main body; 3. Protection mechanism; 31. Protection frame; 32. Protection plate; 33. Fixed pad; 34. Assembly plate; 35. Mounting frame; 36. Support frame; 4. Connection mechanism; 41. Bearing plate body; 42. Partition board; 43. Support column; 44. Mounting frame; 45. Positioning plate; 5. Second inspection plate; 6. Limiting mechanism; 61. Series connection frame; 62. Connection seat; 63. Auxiliary column; 64. Square plate; 65. Locking column; 66. Auxiliary plate; 67. Moving frame; 68. Moving rod; 69. Spring; 610. Pushing plate; 7. First inspection plate; 8. Control panel; 9. Pump body; 10. Vacuum duct. Detailed implementation manner

[0058] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0059] The present invention provides a portable helium mass spectrometer leak detector as shown in Figures 1-7 Figure. A first inspection plate 7 is arranged on the side of the support housing 1, which is beneficial to opening the inside of the support housing 1 to repair and maintain the pump body 9 inside the support housing 1; a mass spectrometer tube, an ion source, a mass analyzer and an ion detector are installed inside the leak detector main body 2. The mass spectrometer tube is the core part of the leak detector and is composed of an ion source, a mass analyzer and an ion detector. The ion source is responsible for generating helium ions, the mass analyzer is used for separating according to the mass difference of ions, and the ion detector is used for detecting ion signals and converting them into electrical signals for output. A control panel 8 is installed on the side of the leak detector main body 2, which is beneficial to controlling the leak detector main body 2. A second inspection plate 5 is arranged on the side of the leak detector main body 2. The second inspection plate 5 is beneficial to opening the inside of the leak detector main body 2, and thus is beneficial to repairing and maintaining the inside of the leak detector main body 2; the protection mechanism 3 is arranged outside the support housing 1, and the protection mechanism 3 is used for anti-collision protection of the outside of the support housing 1; the pump body 9 is installed inside the support housing 1, a vacuum duct 10 is installed at the end of the pump body 9, and the end of the vacuum duct 10 is connected to the leak detector main body 2.

[0060] Furthermore, a connection mechanism 4 is also arranged on the sides of the support housing 1 and the leak detector main body 2. The connection mechanism 4 is used for serially connecting the first inspection plate 7 and the second inspection plate 5 and supporting the protection mechanism 3; a limiting mechanism 6 is arranged on the connection mechanism 4, and the limiting mechanism 6 is used for fixing the connection mechanism 4 to the support housing 1 and the leak detector main body 2.

[0061] Further, the protection mechanism 3 includes a protection frame 31 covering the outside of the support housing 1. The protection frame 31 is U-shaped, which is beneficial for anti-collision protection of the outside of the support housing 1 and can prevent the support housing 1 from being deformed and damaged. An installation groove is formed in the side of the protection frame 31; a protection plate 32 is located inside the installation groove. The protection plate 32 is beneficial for adapting to the fixed pad 33, and thus is beneficial for collision buffering to improve the safety of use; the fixed pad 33 is fixedly connected to the side of the inner wall of the installation groove. The fixed pad 33 is made of rubber and is fixed by an adhesive connection method, which is beneficial for elastically supporting the protection plate 32 for buffering protection. The side of the fixed pad 33 is fixedly connected to the protection plate 32; an installation member is arranged inside the protection frame 31 and is used to connect the protection frame 31 to the connection mechanism 4.

[0062] Specifically, the installation member includes an assembly plate 34 fixedly connected to the side of the inner wall of the protection frame 31. The assembly plate 34 is beneficial for supporting the protection frame 31 and facilitating the installation and positioning of the protection frame 31; an installation frame 35 is fixedly connected to the top of the assembly plate 34. The installation frame 35 is L-shaped, which is beneficial for aligning with the series connection frame 61, and thus is beneficial for limiting the position of the assembly plate 34 to install and disassemble the protection frame 31. A slot is formed in the top of the installation frame 35; a support frame 36 is arranged on the connection mechanism 4, and the assembly plate 34 is slidably inserted into the inner cavity of the support frame 36.

[0063] Specifically, the connection mechanism 4 includes a load-bearing plate body 41 located on the side of the first inspection plate 7 and the second inspection plate 5. The load-bearing plate body 41 and the supporting plate body are beneficial for supporting the partition plate 42 and at the same time are beneficial for cooperating with the partition plate 42 to provide anti-collision protection for the outside of the support housing 1 and the leak detector main body 2. A supporting plate body is arranged on the side of the load-bearing plate body 41; a partition plate 42 is fixedly connected between the load-bearing plate body 41 and the supporting plate body. The partition plate 42 is beneficial for connecting and supporting the load-bearing plate body 41 and the supporting plate body; a support column 43 is fixedly connected between the load-bearing plate body 41 and the supporting plate body. The support column 43 is beneficial for connecting the load-bearing plate body 41 and the supporting plate body to the first inspection plate 7 and the second inspection plate 5, and thus is beneficial for simultaneously removing and installing the first inspection plate 7 and the second inspection plate 5 for synchronous operation to improve the maintenance efficiency. The end of the support column 43 is at the side of the first inspection plate 7 and the second inspection plate 5.

[0064] More specifically, the connecting mechanism 4 further includes a mounting frame 44 fixedly connected to the side portions of the bearing plate body 41 and the supporting plate body. The mounting frame 44 is beneficial for connecting and supporting the supporting plate body and the bearing plate body 41, and is aligned with the positioning plate 45; the positioning plate 45 is located at the bottom of the mounting frame 44. The positioning plate 45 is beneficial for corresponding to the installation of the mounting frame 44, so as to cooperate with the series connection frame 61 to connect and position the bearing plate body 41 and the supporting plate body. The positioning plate 45 is fixedly connected to the side of the support housing 1 and the leak detector main body 2, and a through groove is formed at the top of the positioning plate 45.

[0065] Specifically, the limiting mechanism 6 includes a series connection frame 61 slidably inserted into the inner cavity of the mounting frame 44. The series connection frame 61 is arranged in a U shape, which is beneficial for serially connecting a plurality of mounting frames 44 and positioning plates 45 and serially connecting the mounting frame 35. The series connection frame 61 is slidably inserted into the inner cavities of the slotted groove and the through groove; a connection seat 62 is fixedly connected to the side of the series connection frame 61. The connection seat 62 is beneficial for connecting with the series connection frame 61, which is beneficial for supporting the series connection frame 61; an auxiliary column 63 is fixedly connected to the side of the leak detector main body 2. The auxiliary column 63 is beneficial for enabling the locking column 65 to slide thereon to guide the sliding of the locking column 65. The auxiliary column 63 is located between adjacent connection seats 62; the locking column 65 is slidably arranged on the auxiliary column 63, and a slope is provided at the top of the locking column 65, which is beneficial for vertically extruding the connection seat 62 to directly slide and install the series connection frame 61. The locking column 65 is slidably inserted into the inner cavity of the connection seat 62.

[0066] More specifically, the limiting mechanism 6 further includes a sliding groove formed on the side of the auxiliary column 63. The locking column 65 is slidably inserted into the inner cavity of the sliding groove. The locking column 65 is beneficial to limiting the relative positions of the auxiliary column 63 and the connecting seat 62, and thus is beneficial to the installation and disassembly of the series connection frame 61. The auxiliary plate 66 is fixedly connected to the top end of the inner wall of the sliding groove. The auxiliary plate 66 is beneficial to supporting the compression of the spring 69. The moving frame 67 is slidably arranged on the side of the auxiliary plate 66. The moving frame 67 is beneficial to driving the moving rod 68 to move, and thus is beneficial to horizontally pulling the locking column 65. A moving rod 68 is fixedly inserted into the inside of the moving frame 67, which is beneficial to guiding the deformation of the spring 69 and at the same time is beneficial to pulling the locking column 65. The outer wall of the moving rod 68 is slidably inserted into the auxiliary plate 66. The spring 69 is sleeved on the outside of the moving rod 68. The elastic force of the spring 69 is beneficial to pushing the locking column 65 to move, facilitating the locking column 65 to return to its original position after movement and facilitating repeated operation of the locking column 65. One end of the spring 69 is fixedly connected to the auxiliary plate 66, and the other end of the spring 69 is fixedly connected to the locking column 65. A push plate 610 is fixedly connected to the top end of the moving frame 67, which is beneficial to pushing the moving frame 67 to move for driving operation. Insertion grooves are symmetrically formed at the top of the auxiliary column 63. A square plate 64 is installed inside the insertion grooves, which is beneficial to removing the locking column 65 from the auxiliary column 63 for maintenance. A sliding groove adapted to the moving frame 67 is formed at the top of the square plate 64.

[0067] Usage method of the present invention:

[0068] When it is necessary to move the support housing 1 and the leak detector main body 2, the protective frame 31 and the protective plate 32 provide external anti-collision protection for the bottom of the support housing 1, the fixed pad 33 provides buffer support for the protective plate 32, and the bearing plate body 41, the supporting plate body and the partition plate 42 provide partition protection for the side parts of the leak detector main body 2 and the support housing 1;

[0069] If it is necessary to perform maintenance on the interiors of the support housing 1 and the leak detector main body 2, at this time, simultaneously push the two push plates 610 to move. The push plates 610 drive the moving frame 67 to move. The moving frame 67 slides inside the sliding groove and at the same time drives the moving rod 68 to move. The moving rod 68 pulls the locking column 65 to move, causing the locking column 65 to compress the spring 69 and at the same time disengage from the inside of the connecting seat 62. At this time, the position limitation of the series connection frame 61 is released, and then the series connection frame 61 is pulled upward, so that the series connection frame 61 slides on the mounting frame 44 and the positioning plate 45 and at the same time slides on the mounting bracket 35, and then the series connection frame 61 is pulled out upward;

[0070] At this time, the position limitation of the tandem frame 61 and the assembly plate 34 is released. Then, first horizontally pull the protective frame 31, so that the protective frame 31 drives the assembly plate 34 to disengage from the support frame 36. Then, pull the bearing plate body 41 and the supporting plate body outwards, so as to remove the first inspection plate 7 and the second inspection plate 5, and then the interiors of the leak detector main body 2 and the support housing 1 can be exposed, and then maintenance and inspection can be carried out.

[0071] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A portable helium mass spectrometer leak detector, characterized in that: include: A support shell (1) is provided with a first inspection plate (7) on the side thereof; A leak detector body (2) is provided with a mass spectrometer tube, an ion source, a mass analyzer and an ion detector, a control panel (8) is installed on the side of the leak detector body (2), and a second inspection panel (5) is provided on the side of the leak detector body (2); A protection mechanism (3) is arranged outside the supporting shell (1), and the protection mechanism (3) is used to protect the outside of the supporting shell (1) from collision; The pump body (9) is installed inside the supporting shell (1), and a vacuum air guide tube (10) is installed at the end of the pump body (9), and the end of the vacuum air guide tube (10) is connected to the leak detector body (2).

2. A portable helium mass spectrometer leak detector according to claim 1, characterized in that: Also includes: A connecting mechanism (4) is arranged on the side of the supporting shell (1) and the leak detector body (2), and the connecting mechanism (4) is used to connect the first inspection plate (7) and the second inspection plate (5) in series and to support the protection mechanism (3); The limiting mechanism (6) is arranged on the connecting mechanism (4), and the limiting mechanism (6) is used to fix the connecting mechanism (4) with the supporting shell (1) and the leak detector body (2).

3. A portable helium mass spectrometer leak detector according to claim 1, characterized in that: The protection mechanism (3) comprises: A protective frame (31) is arranged outside the supporting shell (1), and a mounting groove is provided on the side of the protective frame (31); A protective plate (32) is located inside the mounting groove; A fixing pad (33) fixedly connected to a side portion of an inner wall of the mounting groove, wherein the side portion of the fixing pad (33) is fixedly connected to the protective plate (32); The mounting member is arranged inside the protection frame (31), and the mounting member is used to connect the protection frame (31) to the connection mechanism (4).

4. A portable helium mass spectrometer leak detector according to claim 3, characterized in that: The mounting member comprises: An assembly plate (34) fixedly connected to a side portion of an inner wall of the protection frame (31); A mounting frame (35) is fixedly connected to the top of the assembly plate (34), and a slot is formed on the top of the mounting frame (35); The support frame (36) is arranged on the connection mechanism (4), and the assembly plate (34) is connected to the inner cavity of the support frame (36) by sliding and interpenetrating.

5. A portable helium mass spectrometer leak detector according to claim 2, characterized in that: The connecting mechanism (4) comprises: A bearing plate body (41) is located on the side of the first inspection plate (7) and the second inspection plate (5), and a supporting plate body is provided on the side of the bearing plate body (41); A partition plate (42) is fixedly connected between the load-bearing plate body (41) and the supporting plate body; The support column (43) is fixedly connected between the load-bearing plate body (41) and the supporting plate body, and the ends of the support column (43) are aligned with the sides of the first inspection plate (7) and the second inspection plate (5).

6. A portable helium mass spectrometer leak detector according to claim 5, characterized in that: The connecting mechanism (4) further comprises: A mounting frame (44) fixedly connected to the side of the bearing plate body (41) and the supporting plate body; The positioning plate (45) is located at the bottom of the installation frame (44). The positioning plate (45) is fixedly connected to the sides of the supporting shell (1) and the leak detector body (2). A through groove is formed on the top of the positioning plate (45).

7. A portable helium mass spectrometer leak detector according to claim 6, characterized in that: The limiting mechanism (6) comprises: A series frame (61) is slidably connected to the inner cavity of the installation frame (44), and the series frame (61) is slidably connected to the inner cavities of the slots and the through slots; A connecting seat (62) fixedly connected to the side of the series frame (61); An auxiliary column (63) is fixedly connected to the side of the leak detector body (2), and the auxiliary column (63) is located between adjacent connecting seats (62); The locking column (65) is slidably disposed on the auxiliary column (63), and the locking column (65) is slidably inserted and connected with the inner cavity of the connecting seat (62).

8. The portable helium mass spectrometer leak detector according to claim 7, characterized in that: The limiting mechanism (6) further comprises: A slide groove is provided on the side of the auxiliary column (63), and the locking column (65) is slidably connected with the inner cavity of the slide groove; An auxiliary plate (66) is fixedly connected to the top of the inner wall of the chute; A moving frame (67) is slidably arranged on the side of the auxiliary plate (66), a moving rod (68) is fixedly inserted and connected inside the moving frame (67), and an outer wall of the moving rod (68) is slidably inserted and connected with the auxiliary plate (66); A spring (69) is sleeved on the outside of the moving rod (68), one end of the spring (69) is fixedly connected to the auxiliary plate (66), and the other end of the spring (69) is fixedly connected to the locking column (65).

9. A portable helium mass spectrometer leak detector according to claim 8, characterized in that: The top of the movable frame (67) is fixedly connected with a push plate (610), the top of the auxiliary column (63) is symmetrically provided with through slots, a square plate (64) is installed inside the through slots, and the top of the square plate (64) is provided with a sliding groove adapted to the movable frame (67).

10. A method for using a portable helium mass spectrometer leak detector according to any one of claims 1 to 9, characterized in that: The specific usage steps are as follows: Step 1: When the support shell (1) and the leak detector body (2) need to be moved, the protective frame (31) and the protective plate (32) provide external anti-collision protection for the bottom of the support shell (1), the fixed pad (33) provides buffer support for the protective plate (32), and the load-bearing plate (41), the supporting plate and the partition (42) provide barrier protection for the side of the leak detector body (2) and the support shell (1); Step 2: If it is necessary to inspect the interior of the support shell (1) and the leak detector body (2), the two push plates (610) are pushed to move at the same time, and the push plates (610) drive the moving frame (67) to move, and the moving frame (67) slides inside the slide groove, and drives the moving rod (68) to move, and the moving rod (68) pulls the locking column (65) to move, so that the locking column (65) compresses the spring (69) and disengages from the inside of the connecting seat (62). At this time, the position limit of the series frame (61) is released, and then the series frame (61) is pulled upward, so that the series frame (61) slides on the installation frame (44) and the positioning plate (45), and slides on the installation frame (35), and then the series frame (61) is pulled upward; Step 3: At this time, the position restrictions on the series frame (61) and the assembly plate (34) are released, and then the protective frame (31) is pulled horizontally first, so that the protective frame (31) drives the assembly plate (34) to separate from the support frame (36), and then the load-bearing plate body (41) and the supporting plate body are pulled outward, and then the first inspection plate (7) and the second inspection plate (5) are removed, so that the interior of the leak detector body (2) and the support shell (1) can be exposed, and then maintenance and inspection can be carried out.

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