Solenoid valve leakproofness test tool for helium mass spectrometer leak detection device

Abstract

The utility model relates to the technical field of helium detection equipment, in particular to an electromagnetic valve sealing performance test tool for a helium mass spectrum leakage detection device. Comprising a machine frame, two vertical sliding rails symmetrically installed at the front end of the machine frame, a vertical sliding block movably installed at the front ends of the two vertical sliding rails, an upper air seat installed at the front end of the vertical sliding block, and an air cylinder installed at the upper end of the machine frame and in transmission connection with the upper air seat. The lower air seat is installed on the machine frame and located below the upper air seat, the positioning block is movably installed between the machine frame and the lower air seat, and a material containing groove used for containing an electromagnetic valve is formed in the front end of the positioning block. According to the utility model, the original test tool is scientifically and reasonably improved, and the positioning block is provided with the transverse chute, the vertical buckling groove, the limiting clasping buckle and the sliding column, so that the electromagnetic valve can be limited and fixed in the material placing groove of the positioning block in an auxiliary manner, and the procedure of manually keeping the placement state of the electromagnetic valve by an operator is avoided; therefore, the safety and the test efficiency of the actual helium detection operation of the electromagnetic valve are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of helium detection equipment, in particular to a solenoid valve sealing test tool for a helium mass spectrometer leak detection device. Background Art

[0002] Helium mass spectrometer leak detector is a term in the gas industry. It uses helium or hydrogen as leak detector gas and uses a gas analyzer to detect helium for leak detection. Helium has low background noise, small molecular weight and viscosity coefficient, so it is easy to pass through leak holes and diffuse. In addition, helium is an inert gas and does not corrode equipment, so helium is often used as a leak detector gas. This gas is sprayed onto the container to be inspected that is connected to a gas analyzer (adjusted to a working state that only reacts to helium). If there is a leak in the container, the analyzer will react, so that the location of the leak and the amount of leakage can be known.

[0003] like Figure 3 As shown in the figure, this is a test fixture of the previous generation installed on the helium mass spectrometer leak detection device. Its main function is to assist in establishing the gas circuit connection between the solenoid valve and the helium mass spectrometer leak detection device, and to improve the efficiency and stability of the solenoid valve helium detection operation. However, this structure of the test fixture has the following shortcomings in actual use: Since the solenoid valve was originally placed on the positioning block through the material trough, when the cylinder drives the upper air seat to move downward, the positioning block as a whole will move downward for a distance. In this process, the solenoid valve is easily offset by the force on the positioning block, thereby causing abnormal gas circuit connection problems. At present, in order to solve this problem, the operator needs to squeeze the solenoid valve obliquely downward with his hand, and observe and adjust the placement of the solenoid valve to keep the solenoid valve stably engaged in the positioning block. Such operation is not only prone to the safety problem of pinching hands, but also directly affects the efficiency of the solenoid valve sealing test.

[0004] In view of this, it is particularly important to design and manufacture a solenoid valve sealing test fixture that can maintain the solenoid valve placement state without manual work and improve the solenoid valve placement stability and helium detection operation safety in the actual use of the helium mass spectrometer leak detection device. Utility Model Content

[0005] The utility model aims to solve the problem that in a conventional solenoid valve sealing test tool for a helium mass spectrometer leak detection device, an operator needs to manually keep the solenoid valve in a placed state when performing a helium detection operation of the solenoid valve, resulting in poor safety and low efficiency of the helium detection operation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A solenoid valve sealing test tool for a helium mass spectrometer leak detection device comprises a frame, two vertical slide rails symmetrically mounted on the front end of the frame, a vertical slider movably mounted on the front ends of the two vertical slide rails, an upper air seat mounted on the front end of the vertical slider, a cylinder mounted on the upper end of the frame and transmission-connected to the upper air seat, a lower air seat mounted on the frame and located below the upper air seat, and a positioning block movably mounted between the frame and the lower air seat, wherein a material placement groove for accommodating the solenoid valve is provided at the front end of the positioning block, a fixing part for auxiliary limiting fixing of the solenoid valve in the material placement groove is provided on the outer side of the positioning block, and a prompt part for judging whether the solenoid valve is installed in place and used in conjunction with the fixing part is provided between the frame and the positioning block.

[0008] As a further description of the above technical solution:

[0009] The fixing part includes horizontal sliding grooves symmetrically opened on the left and right ends of the positioning block, vertical buckle grooves opened on the left and right ends of the positioning block and connected with the rear end of the horizontal sliding grooves, a limiting buckle installed between the left and right ends of the positioning block, and a sliding column fixed at the rear end of the limiting buckle and located on the inner side of the horizontal sliding groove.

[0010] As a further description of the above technical solution:

[0011] The shape of the position limiting buckle is a U-shaped structure, and the front end of the position limiting buckle is integrally fixedly connected with a handle.

[0012] As a further description of the above technical solution:

[0013] The prompt part includes a prompt plate rotatably installed in the middle of the front end of the frame, a prompt light installed on the upper end of the prompt plate, a battery slot arranged at the lower end of the prompt plate, a lithium battery installed inside the battery slot, a first groove opened in the middle of the front end of the positioning block, a first voltage-controlled switch installed inside the first groove, a second groove opened in the middle of the upper end of the positioning block and a second voltage-controlled switch opened inside the second groove.

[0014] As a further description of the above technical solution:

[0015] A series circuit is established between the first voltage-controlled switch, the second voltage-controlled switch, the lithium battery and the prompt light through wires.

[0016] As a further description of the above technical solution:

[0017] Two guide posts penetrating downwardly through the frame are symmetrically mounted on the lower end of the positioning block, guide cylinders corresponding to the guide posts are mounted on the frame, and a spiral extrusion spring is mounted between the guide posts and the guide cylinders.

[0018] As a further description of the above technical solution:

[0019] An air connection pipe facing the positioning block is installed at the lower end of the upper air seat, and an air inlet pipe connected with the air connection pipe is installed at the front end of the upper air seat.

[0020] As a further description of the above technical solution:

[0021] The lower end of the frame is located below the lower air seat and is provided with an air outlet pipe communicated with the lower air seat.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0023] 1. In the utility model, the original test tooling is scientifically and rationally improved, a horizontal slide groove, a vertical buckle groove, a limit buckle and a slide column are arranged on the positioning block, the solenoid valve is placed in the material feeding groove, and the slide column on the limit buckle can be slid backward in the horizontal slide groove by holding the handle. When the inner wall of the limit buckle is attached to and squeezed to the outer wall of the solenoid valve, the slide column on the limit buckle can be buckled from the horizontal slide groove into the vertical buckle groove, and the solenoid valve is comprehensively limited in the material feeding groove of the positioning block. This structure can fix the auxiliary limit of the solenoid valve in the material feeding groove of the positioning block, avoiding the operator's manual maintenance of the solenoid valve placement state. The safety of the actual helium inspection operation of the solenoid valve and the test efficiency are improved.

[0024] 2. In the utility model, a prompt plate, a lithium battery and a prompt light are arranged on the frame, and a first pressure-controlled switch and a second pressure-controlled switch are arranged on the positioning block. When the solenoid valve is stably placed in the material placement groove of the positioning block, the rear end of the solenoid valve will squeeze the first pressure-controlled switch, and the lower end of the solenoid valve will squeeze the second pressure-controlled switch. At this time, the circuit will be connected, and the lithium battery will power the prompt light. The prompt light at the corresponding position on the prompt plate will emit light to inform the operator that the solenoid valve at this workstation has been placed in accordance with the requirements. This structure can send a light signal to remind the operator when the placement state of the solenoid valve meets the requirements, effectively reducing the workload and difficulty of the solenoid valve discharging operation, thereby further improving the safety and test efficiency of the actual helium inspection operation of the solenoid valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic structural diagram of a solenoid valve sealing test tool for a helium mass spectrometer leak detection device proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the structure of the positioning block and the limit buckle in the utility model;

[0027] Figure 3 The present invention is a schematic diagram of the structure of a solenoid valve sealing test tool for a previous generation helium mass spectrometer leak detection device in the prior art.

[0028] Legend:

[0029] 1. Frame; 101. Vertical slide rail; 102. Guide cylinder; 2. Positioning block; 201. Material trough; 202. First groove; 203. Second groove; 204. Guide column; 205. Horizontal slide groove; 206. Vertical buckle groove; 3. Cylinder; 4. Upper air seat; 401. Vertical slide block; 402. Air pipe; 403. Air inlet pipe; 5. Lower air seat; 501. Air outlet pipe; 6. Limit buckle; 601. Slide column; 602. Handle; 7. First pressure-controlled switch; 8. Second pressure-controlled switch; 9. Prompt board; 901. Battery slot; 902. Lithium battery; 903. Prompt light. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] See also Figure 1 and Figure 2 The utility model provides a technical solution: a solenoid valve sealing test tool for a helium mass spectrometer leak detection device, comprising a frame 1, two vertical slide rails 101 symmetrically installed at the front end of the frame 1, a vertical slider 401 movably installed at the front ends of the two vertical slide rails 101, an upper air seat 4 installed at the front end of the vertical slider 401, a cylinder 3 installed at the upper end of the frame 1 and drivingly connected to the upper air seat 4, a lower air seat 5 installed on the frame 1 and located below the upper air seat 4, and a positioning block 2 movably installed between the frame 1 and the lower air seat 5, a material placement groove 201 for accommodating the solenoid valve is opened at the front end of the positioning block 2, a fixing part for auxiliary limiting fixing of the solenoid valve in the material placement groove 201 is arranged on the outer side of the positioning block 2, and a prompt part for judging whether the solenoid valve is installed in place and used in conjunction with the fixing part is arranged between the frame 1 and the positioning block 2.

[0032] Specifically, Figure 1 and Figure 2As shown, the fixed part includes a horizontal slide groove 205 symmetrically opened on the left and right ends of the positioning block 2, a vertical buckle groove 206 opened on the left and right ends of the positioning block 2 and connected with the rear end of the horizontal slide groove 205, a limit buckle 6 installed between the left and right ends of the positioning block 2, and a slide column 601 fixed at the rear end of the limit buckle 6 and located on the inner side of the horizontal slide groove 205. When the slide column 601 slides from the horizontal slide groove 205 to the vertical buckle groove 206, since the limit buckle 6 and the solenoid valve are in an extruded and fitted state, the limit buckle 6 can exert a certain degree of locking force to prevent the solenoid valve from moving along the Y-axis direction in the material storage groove 201 of the positioning block 2, wherein the limit buckle 6 is in a U-shaped structure, and the front end of the limit buckle 6 is integrally fixedly connected with a handle 602, which is convenient for the operator to hold the limit buckle 6 and perform sliding adjustment operations.

[0033] Specifically, Figure 1 and Figure 2 As shown, the prompt part includes a prompt plate 9 rotatably installed in the middle of the front end of the frame 1, a prompt light 903 installed on the upper end of the prompt plate 9, a battery slot 901 arranged at the lower end of the prompt plate 9, a lithium battery 902 installed inside the battery slot 901, a first groove 202 opened in the middle of the front end of the positioning block 2, a first pressure-controlled switch 7 installed inside the first groove 202, a second groove 203 opened in the middle of the upper end of the positioning block 2 and a second pressure-controlled switch 8 opened inside the second groove 203. At the same time, a series circuit is established between the first pressure-controlled switch 7, the second pressure-controlled switch 8, the lithium battery 902 and the prompt light 903 through wires. The first pressure-controlled switch 7 and the second pressure-controlled switch 8 are in a normally open state under normal conditions. When pressurized, the internal circuit will be closed and connected. At this time, the lithium battery 902 can power the prompt light 903, and the prompt light 903 can send a light signal to remind the operator to determine whether the solenoid valve is placed in place.

[0034] Specifically, Figure 1 and Figure 2 As shown, two guide columns 204 penetrating downwardly through the frame 1 are symmetrically installed at the lower end of the positioning block 2, and a guide cylinder 102 corresponding to the guide column 204 is installed on the frame 1. The setting of the guide column 204 and the guide cylinder 102 can limit the vertical movement path of the positioning block 2 and improve the stability of the vertical movement of the positioning block 2. A spiral extrusion spring is installed between the guide column 204 and the guide cylinder 102, which can automatically reset the positioning block 2 to the initial position after the positioning block 2 is depressurized, so as to facilitate the subsequent air path connection operation after the solenoid valve is placed.

[0035] Specifically, Figure 1As shown, an air connecting pipe 402 facing the positioning block 2 is installed at the lower end of the upper air seat 4, which can establish an air circuit connection with the upper air port of the solenoid valve; an air inlet pipe 403 connected with the air connecting pipe 402 is installed at the front end of the upper air seat 4, which is convenient for the upper air seat 4 to establish an air circuit connection with the test air circuit; the lower end of the frame 1 is located below the lower air seat 5 and is installed with an air outlet pipe 501 connected with the lower air seat 5, which is convenient for the lower air seat 5 to establish an air circuit connection with the test air circuit.

[0036] Working principle: When in use, the test fixture is installed and fixed on the test station of the helium mass spectrometer leak detection device. First, the test gas circuit of the helium mass spectrometer leak detection device is connected to the air inlet pipe 403 and the air outlet pipe 501 through the air delivery hose, and then the drive air circuit is connected to the cylinder 3 through the air delivery hose. The assembly operation of the test fixture and the helium mass spectrometer leak detection device is completed. During the actual helium detection test, the operator can put the solenoid valve into the material placement slot 201 on the positioning block 2. By observing whether the prompt lights 903 at the corresponding positions on the prompt plate 9 are all on, it can be understood whether the solenoid valve is placed in place. When the warning light 903 at the corresponding position on the warning plate 9 lights up, the operator can hold the handle 602 on the limit buckle 6 and slide the slide column 601 on the limit buckle 6 backward in the horizontal slide groove 205 of the positioning block 2. When the inner wall of the limit buckle 6 is attached to and squeezed to the outer wall of the solenoid valve, the slide column 601 on the limit buckle 6 can be buckled downward from the horizontal slide groove 205 into the vertical buckle groove 206. At this time, the limit buckle 6 can limit the solenoid valve in the material placement groove 201 of the positioning block 2, completing the discharge operation of the solenoid valve, and then the subsequent helium detection test operation of the solenoid valve can be carried out.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A solenoid valve sealing test tool for a helium mass spectrometer leak detection device, comprising a frame (1), two vertical slide rails (101) symmetrically mounted at the front end of the frame (1), a vertical slide block (401) movably mounted at the front ends of the two vertical slide rails (101), an upper air seat (4) mounted at the front end of the vertical slide block (401), a cylinder (3) mounted at the upper end of the frame (1) and drivingly connected to the upper air seat (4), a lower air seat (5) mounted on the frame (1) and located below the upper air seat (4), and a positioning block (2) movably mounted between the frame (1) and the lower air seat (5), characterized in that: The front end of the positioning block (2) is provided with a material placement groove (201) for accommodating the electromagnetic valve, the outer side of the positioning block (2) is provided with a fixing portion for auxiliary limiting fixing of the electromagnetic valve in the material placement groove (201), and a prompt portion for judging whether the electromagnetic valve is installed in place and used in conjunction with the fixing portion is provided between the frame (1) and the positioning block (2).

2. The solenoid valve sealing test tool for a helium mass spectrometer leak detection device according to claim 1, characterized in that: The fixing portion comprises a transverse sliding groove (205) symmetrically provided on the left and right ends of the positioning block (2), a vertical buckle groove (206) provided on the left and right ends of the positioning block (2) and connected to the rear end of the transverse sliding groove (205), a limit buckle (6) installed between the left and right ends of the positioning block (2), and a sliding column (601) fixed to the rear end of the limit buckle (6) and located inside the transverse sliding groove (205).

3. The solenoid valve sealing test tool for a helium mass spectrometer leak detection device according to claim 2, characterized in that: The position-limiting buckle (6) is in the form of a U-shaped structure, and a handle (602) is integrally and fixedly connected to the front end of the position-limiting buckle (6).

4. The solenoid valve sealing test tool for a helium mass spectrometer leak detection device according to claim 1, characterized in that: The prompting part comprises a prompting plate (9) rotatably mounted at the middle of the front end of the frame (1), a prompting light (903) mounted at the upper end of the prompting plate (9), a battery slot (901) arranged at the lower end of the prompting plate (9), a lithium battery (902) mounted inside the battery slot (901), a first groove (202) opened at the middle of the front end of the positioning block (2), a first pressure-controlled switch (7) mounted inside the first groove (202), a second groove (203) opened at the middle of the upper end of the positioning block (2), and a second pressure-controlled switch (8) opened inside the second groove (203).

5. The solenoid valve sealing test tool for a helium mass spectrometer leak detection device according to claim 4, characterized in that: A series circuit is established between the first voltage-controlled switch (7), the second voltage-controlled switch (8), the lithium battery (902) and the warning light (903) via electric wires.

6. The solenoid valve sealing test tool for a helium mass spectrometer leak detection device according to claim 1, characterized in that: Two guide columns (204) penetrating downwardly through the frame (1) are symmetrically mounted at the lower end of the positioning block (2); a guide cylinder (102) corresponding to the guide column (204) is mounted on the frame (1); and a spiral extrusion spring is mounted between the guide column (204) and the guide cylinder (102).

7. The solenoid valve sealing test tool for a helium mass spectrometer leak detection device according to claim 1, characterized in that: An air connection pipe (402) facing the positioning block (2) is installed at the lower end of the upper air seat (4), and an air inlet pipe (403) connected to the air connection pipe (402) is installed at the front end of the upper air seat (4).

8. The solenoid valve sealing test tool for a helium mass spectrometer leak detection device according to claim 1, characterized in that: The lower end of the frame (1) is located below the lower air seat (5) and is provided with an air outlet pipe (501) connected to the lower air seat (5).

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