Helium detection equipment

Abstract

The utility model discloses a helium detection equipment relates to helium detection technical field, including equipment frame, detection station, electric appliance control cabinet and helium recovery system, the inside of detection station is provided with work piece frock, the top of work piece frock is equipped with a first shell, the inside of first shell is provided with a second shell, the inside of second shell is equipped with the helium recovery system, the inside of second shell is equipped with the helium recovery system. And a third shell is arranged in the second shell, and seam blocking plates are connected to the upper portions of the inner walls of the first shell and the second shell correspondingly. According to the utility model, through cooperation of the first housing, the second housing, the third housing, the top plate, the second electric telescopic rod and the first electric telescopic rod, the built-in capacity of the formed vacuum box can be conveniently adjusted according to the specifications of a to-be-detected piece and a workpiece tool, and the vacuum box moves downwards to complete abutting sealing work on a detection station. The structure design is reasonable, the installation is convenient, the application range and the use flexibility of the equipment are improved, and the helium detection efficiency of a small to-be-detected piece is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of helium detection, in particular to a helium detection device. Background Art

[0002] Helium detection test is a method for detecting gas leakage. It is often used in the industrial field to detect leaks in equipment, pipelines, containers, etc. The principle of helium detection test is based on the low permeability and traceability of helium gas. By injecting helium gas into the object to be tested and then using a helium gas detection instrument to detect the helium gas concentration in the surrounding environment to determine whether there is a leakage problem in the object to be tested.

[0003] At present, the workpiece clamping tooling of the existing helium detection equipment can be replaced according to the size specifications of the workpiece to be tested. However, the vacuum chamber of the current helium detection equipment is not easy to replace, resulting in a relatively large internal capacity of the equipment's vacuum environment and a slow vacuum pumping speed, with low practicability. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide a helium detection device in view of the current situation of the prior art.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A helium detection device includes an equipment frame, a detection station, an electrical control cabinet, and a helium recovery system. A workpiece tooling is arranged inside the detection station. A first housing is installed above the workpiece tooling. A second housing is arranged inside the first housing. A third housing is arranged inside the second housing. Baffle plates are connected to the upper inner walls of the first housing and the second housing. A top plate is arranged inside the third housing. A second electric telescopic rod is connected to the middle of the upper surface of the top plate. Upper sealing plates are connected to the tops of the first housing, the second housing, and the third housing. A lower sealing plate is installed at the bottom of the first housing. A first electric telescopic rod is arranged on the top of the upper sealing plate. Sealing strips are pasted on the outer sides of the upper sealing plate and the lower sealing plate.

[0007] Preferably, a helium mass spectrometer leak detector is arranged inside the equipment frame, and an alarm is installed on the top of the equipment frame.

[0008] Preferably, there are two groups of detection stations, and an installation hole is arranged in the middle of the platform of the detection station.

[0009] Preferably, the outside of the electrical control cabinet includes a barcode scanner and a touch display screen. A programmable controller and low-voltage electrical components are arranged inside the electrical control cabinet. The programmable controller of the electrical control cabinet is electrically or signal-connected to the helium mass spectrometer leak detector inside the equipment frame.

[0010] Preferably, the helium recovery system includes a vacuum pump, a gas storage tank, a compressor, a helium concentration meter, a gas pipeline and connectors. Pressure sensors and valves are provided on the gas pipelines of the vacuum pump and the gas storage tank, and a fence is installed outside the helium recovery system.

[0011] Preferably, the first housing has a rectangular structure, and the shape and structure of the first housing are the same as those of the second housing and the third housing.

[0012] Preferably, the first housing and the detection station form a lifting structure through a first electric telescopic rod, and the first housing is fixedly connected to the upper sealing plate.

[0013] Preferably, the outer wall of the top plate is in contact with the inner wall of the third housing, and a gas pipeline interface is provided at the top of the top plate.

[0014] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, through the cooperative work of the first housing, the second housing, the third housing, the top plate, the second electric telescopic rod and the first electric telescopic rod, it is convenient to adjust the internal capacity of the formed vacuum chamber according to the specifications of the workpiece to be detected and the workpiece fixture, and move down to complete the butt joint and sealing work at the detection station, forming a chamber for convenient vacuum and helium leak detection work. The structure is reasonably designed and easy to install, which is beneficial to improving the application range and use flexibility of the equipment, and accelerating the helium leak detection efficiency of smaller workpieces to be detected.

[0016] 2. In the present utility model, through the arrangement of the baffle plate, the upper sealing plate and the lower sealing plate, when the first housing or the second housing or the third housing is combined with the top plate, the upper sealing plate and the baffle plate can improve the sealing performance at the splicing position, and the sealing rubber strip on the lower sealing plate is in butt joint and sealed with the workpiece fixture, so that the overall sealing effect of the formed vacuum chamber is good, which is beneficial to improving the vacuum pumping stability of the vacuum chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional view of the present utility model;

[0018] Figure 2 is a front structural schematic diagram of the equipment frame in the present utility model;

[0019] Figure 3 is an internal structural schematic diagram of the detection station in the present utility model;

[0020] Figure 4 is a top view structural schematic diagram of the first housing and the top plate in the present utility model.

[0021] Legend Explanation:

[0022] 1. Equipment rack; 2. Detection station; 3. Electrical control cabinet; 4. Alarm; 5. Helium recovery system; 6. First housing; 7. Workpiece fixture; 8. Mounting hole; 9. First electric telescopic rod; 10. Upper sealing plate; 11. Lower sealing plate; 12. Second housing; 13. Third housing; 14. Gap blocking plate; 15. Top plate; 16. Second electric telescopic rod; 17. Gas pipeline interface; 18. Sealing strip; 19. Barcode scanner; 20. Vacuum pump; 21. Gas storage tank; 22. Compressor; 23. Fence. Detailed implementation manners

[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0024] In the description of the present invention, it should be noted that the orientation or positional relationships indicated by the terms "above", "below", "inner wall", "outer wall", "inner side", "outer side", "two ends", "one end", "the other end", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0025] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. shall be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0026] Please refer to Figures 1-4, a helium detection device, comprising a device frame 1, a detection station 2, an electrical control cabinet 3 and a helium recovery system 5. Inside the detection station 2, a workpiece fixture 7 is arranged. Above the workpiece fixture 7, a first housing 6 is installed. Inside the first housing 6, a second housing 12 is arranged. Inside the second housing 12, a third housing 13 is arranged. Above the inner walls of the first housing 6 and the second housing 12, a baffle plate 14 is connected. Inside the third housing 13, a top plate 15 is arranged. In the middle of the upper surface of the top plate 15, a second electric telescopic rod 16 is connected. At the tops of the first housing 6, the second housing 12 and the third housing 13, an upper sealing plate 10 is connected. At the bottom of the first housing 6, a lower sealing plate 11 is installed. On the top of the upper sealing plate 10, a first electric telescopic rod 9 is arranged. Sealing strips 18 are pasted on the outer sides of the upper sealing plate 10 and the lower sealing plate 11.

[0027] By adopting the above technical solution, according to the specifications of the workpiece to be detected and the installed workpiece fixture 7, the corresponding first electric telescopic rod 9 and the second electric telescopic rod 16 are started to move downward, so that the third housing 13 and the top plate 15 form a sealed space outside the workpiece fixture 7, which is convenient for subsequent vacuum pumping operations. Through the settings of the first housing 6, the second housing 12 and the third housing 13, the built-in capacity of the vacuum chamber can be quickly adjusted, which is beneficial to improving the applicable range and usage flexibility of the device, and accelerating the helium detection efficiency of the device for smaller workpieces to be detected.

[0028] Furthermore, a helium mass spectrometer leak detector is arranged inside the device frame 1, and an alarm 4 is installed on the top of the device frame 1. After the workpiece fixture 7 passes through the helium mass spectrometer leak detector inside the device frame 1, if the detection result is qualified, the alarm 4 works to prompt the staff. After pressing the unqualified confirmation button, the helium gas is automatically recovered, the vacuum chamber is inflated and the door is opened, and the leaking workpiece is taken out manually.

[0029] Furthermore, there are two groups of detection stations 2. An installation hole 8 is arranged in the middle of the platform of the detection station 2, which is convenient for installing a workpiece fixture 7 with a corresponding specification on the detection station 2 according to the specification of the workpiece to be detected, and has high practicability. An opening and a storage chamber are arranged above the inside of the detection station 2, which is convenient for the accommodation of the first housing 6, the second housing 12 and the third housing 13 moving upward.

[0030] Furthermore, the outside of the electrical control cabinet 3 includes a barcode scanner 19 and a touch display screen. Inside the electrical control cabinet 3, a programmable controller and low-voltage electrical components are arranged. The programmable controller of the electrical control cabinet 3 is electrically or signal-connected to the helium mass spectrometer leak detector inside the device frame 1. The arranged barcode scanner 19 enables manual scanning of the workpiece, and the test parameters and test results are recorded according to the QR code output.

[0031] Furthermore, the helium recovery system 5 includes a vacuum pump 20, a gas storage tank 21, a compressor 22, a helium concentration meter, gas pipelines and connectors. Pressure sensors and valves are provided on the gas pipelines of the vacuum pump 20 and the gas storage tank 21. A fence 23 is installed outside the helium recovery system 5. With the setting of the helium recovery system 5, it is convenient to recover the helium in the vacuum chamber after the helium leak detection of the workpiece is completed.

[0032] Furthermore, the first housing 6 is in a loop structure. The shape and structure of the first housing 6 are the same as those of the second housing 12 and the third housing 13. The materials of the first housing 6, the second housing 12 and the third housing 13 can be stainless steel or aluminum plates. The installation method of the first housing 6, the second housing 12 and the third housing 13 with the first electric telescopic rod 9 is fixed connection by bolts.

[0033] Furthermore, the first housing 6 and the detection station 2 form a lifting structure through the first electric telescopic rod 9. The first housing 6 is fixedly connected to the upper sealing plate 10, which is convenient for driving the first housing 6 to move downward through the first electric telescopic rod 9 to abut against the workpiece fixture 7, forming a vacuumable chamber around the workpiece, facilitating the vacuum pumping of the workpiece for helium leak detection work. At the same time, a sealing strip is provided outside the upper sealing plate 10, making the components in contact with it have good sealing performance.

[0034] Furthermore, the outer wall of the top plate 15 is in contact with the inner wall of the third housing 13. A gas pipeline interface 17 is provided at the top of the top plate 15. The gas pipeline interface 17 is connected to the vacuum pump 20, facilitating the vacuum pumping operation of the formed chamber.

[0035] Working principle: First, turn on the power supply of the device to start all the electrical appliances of the device. After the door of the detection station 2 is opened, place the workpiece on the workpiece tooling 7 of the detection station 2, and press the double-start button. Then, the corresponding first electric telescopic rod 9 drives the corresponding first housing 6 or the second housing 12 or the third housing 13 to move downward to abut and seal with the workpiece tooling 7. Moreover, the top plate 15 is driven to move downward by the second electric telescopic rod 16 (adjusted according to the overall height of the test piece and the workpiece tooling 7) to form a vacuum box with a size adapted to the workpiece tooling 7, completing the closing of the vacuum box and the sealing of the workpiece. Then, the formed vacuum box is evacuated to the set value by the vacuum pump 20, and the leak detection valve is opened to test whether the helium background (a relatively stable radiation level or sound volume formed by the surrounding environment) in the vacuum box is qualified. When the detection is unqualified, the alarm 4 works to remind the staff to press the unqualified confirmation button. After pressing the button, the helium gas is recovered, the vacuum box is inflated and the door is opened, and the leaking workpiece is taken out manually. This structure is reasonably designed and easy to install, which is beneficial to improving the applicable range and usage flexibility of the device and accelerating the helium detection efficiency of smaller workpieces to be detected. (It should be noted that for the electrical parts involved in this solution, the specific model specifications need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.)

[0036] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A helium detection device, comprising an equipment frame (1), a detection station (2), an electrical control cabinet (3) and a helium recovery system (5), characterized in that: A workpiece fixture (7) is arranged inside the detection station (2), a first shell (6) is installed above the workpiece fixture (7), a second shell (12) is arranged inside the first shell (6), a third shell (13) is arranged inside the second shell (12), a seam blocking plate (14) is connected to the top of the inner wall of the first shell (6) and the second shell (12), a top plate (15) is arranged inside the third shell (13), a second electric telescopic rod (16) is connected to the middle of the upper surface of the top plate (15), an upper sealing plate (10) is connected to the top of the first shell (6), the second shell (12) and the third shell (13), a lower sealing plate (11) is installed at the bottom of the first shell (6), a first electric telescopic rod (9) is arranged on the top of the upper sealing plate (10), and sealing strips (18) are attached to the outer sides of the upper sealing plate (10) and the lower sealing plate (11).

2. A helium detection device according to claim 1, characterized in that: A helium mass spectrometer leak detector is arranged inside the equipment rack (1), and an alarm (4) is installed on the top of the equipment rack (1).

3. A helium detection device according to claim 1, characterized in that: The detection stations (2) are distributed in two groups, and a mounting hole (8) is provided in the middle of the platform of the detection station (2).

4. A helium detection device according to claim 1, characterized in that: The exterior of the electrical control cabinet (3) includes a barcode scanner (19) and a touch display screen, and the interior of the electrical control cabinet (3) is provided with a programmable controller and low-voltage electrical components. The programmable controller of the electrical control cabinet (3) is electrically or signal-connected to a helium mass spectrometer leak detector in the equipment rack (1).

5. A helium detection device according to claim 1, characterized in that: The helium recovery system (5) comprises a vacuum pump (20), a gas storage tank (21), a compressor (22), a helium concentration meter, a gas pipeline and a connector. The gas pipelines of the vacuum pump (20) and the gas storage tank (21) are provided with pressure sensors and valves. A fence (23) is installed outside the helium recovery system (5).

6. A helium detection device according to claim 1, characterized in that: The first shell (6) is of a circular structure, and the shape and structure of the first shell (6) are consistent with the shape and structure of the second shell (12) and the third shell (13).

7. A helium detection device according to claim 1, characterized in that: The first shell (6) and the detection station (2) form a lifting structure via a first electric telescopic rod (9), and the first shell (6) and the upper sealing plate (10) are fixedly connected.

8. A helium detection device according to claim 1, characterized in that: The outer wall of the top plate (15) contacts the inner wall of the third shell (13), and a gas pipeline interface (17) is provided on the top of the top plate (15).

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