A length-adjustable helium detection tool

Abstract

The utility model relates to the technical fields of helium detection tooling, especially to a length-adjustable helium detection tooling, when using, the staff places work piece on nylon base, then operates the top tight component to the work piece top tight while making the output end of the inflation component and the air inlet hole of work piece seal, then operates the nitrogen filling pump and inflation component input end intercommunication, starts the nitrogen filling pump to make nitrogen enter work piece through the inflation component and carry out helium detection, including roof, support column and nylon base, the four corners of the top of nylon base are fixedly provided with a group of support columns respectively, the four corners of the bottom of roof are fixedly connected with the top of a group of support columns respectively, still include inflation component and top tight component, the top tight component is provided on the roof, the inflation component is provided on the nylon base.

Description

Technical Field

[0001] This utility model relates to the technical field of helium inspection fixtures, and in particular to an adjustable-length helium inspection fixture. Background Technology

[0002] Helium leak testing is an inspection method that involves evacuating the workpiece and then filling it with helium gas at a certain pressure. The workpiece is placed in a vacuum chamber with a specific vacuum level, which is connected to the leak detection port of a helium mass spectrometer leak detector. Helium leak testing fixtures are specialized tools used in conjunction with a helium mass spectrometer leak detector to perform airtightness testing on the workpiece.

[0003] The old-style tooling is an end-face extrusion sealing tooling, which has the following two disadvantages: 1. The old-style tooling uses end face sealing, which has an unsatisfactory sealing effect and causes the sealing rubber to wear out quickly; 2. The old-style tooling requires a large force to seal the end face, which can cause some damage to the workpiece. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an adjustable-length helium inspection fixture.

[0005] This utility model discloses an adjustable-length helium testing fixture, comprising a top plate, support columns, and a nylon base. A set of support columns is fixedly installed at each of the four corners of the top of the nylon base, and the four corners of the bottom of the top plate are fixedly connected to the tops of the support columns. It also includes an inflation assembly and a clamping assembly. The clamping assembly is installed on the top plate, and the inflation assembly is installed on the nylon base. In use, the operator places the workpiece on the nylon base, then operates the clamping assembly to clamp the workpiece while simultaneously sealing the output end of the inflation assembly with the air inlet of the workpiece. Then, the operator connects the nitrogen pump to the input end of the inflation assembly, starts the nitrogen pump, and allows nitrogen gas to enter the workpiece through the inflation assembly for helium testing.

[0006] Preferably, the inflation assembly includes an inflation connector, a vented plastic sealing head, and a sealing O-ring. The inflation connector is installed on the nylon base, and the output end of the inflation connector is provided with a vented plastic sealing head, and the output end of the vented plastic sealing head is provided with a sealing O-ring. After the workpiece is placed on the nylon base and the clamping assembly clamps the workpiece, the output end of the vented plastic sealing head is connected to the air inlet of the workpiece. The output end of the vented plastic sealing head and the air inlet of the workpiece are sealed by the sealing O-ring. The output end of the nitrogen pump is connected to the input end of the inflation connector. When the nitrogen pump is started, nitrogen gas enters the workpiece through the inflation connector, the vented plastic sealing head, and the sealing O-ring for nitrogen testing.

[0007] Preferably, the clamping assembly includes a quick clamp, a guide post, a pressure plate, a nylon block, and a pressure head. The quick clamp is fixedly mounted on the top plate. The guide post is fixed to the moving end of the quick clamp with a long screw. After the pressure head and pressure plate are assembled, they are fixedly connected to the bottom end of the guide post. The pressure plate is slidably connected to four sets of support columns. In use, the operator pushes the quick clamp, which causes the guide post to move the pressure plate, nylon block, and pressure head toward the workpiece, further clamping and fixing the workpiece with the pressure head. According to the specifications of the workpiece, the position of the guide post is adjusted by adjusting the long screw, and the distance between the pressure plate, pressure head, and quick clamp is further adjusted to achieve clamping of workpieces of different heights and improve flexibility.

[0008] Preferably, it also includes a nylon limiting block, which is provided on the nylon base; when the pressure head presses against the workpiece, the nylon limiting block limits the workpiece to ensure its stability.

[0009] Preferably, the quick clamp is fixedly connected to the top plate by screws.

[0010] Preferably, the support column is fixedly connected to the top plate and the nylon base by bolts.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the operator places the workpiece on the nylon base, and then operates the clamping component to clamp the workpiece while sealing the output end of the inflation component with the air inlet of the workpiece. Then, the operator connects the nitrogen pump to the input end of the inflation component and starts the nitrogen pump, so that nitrogen gas enters the workpiece through the inflation component for helium detection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the isometric structure of this utility model; Figure 2 This is a top view of the structure of this utility model; Figure 3 It is along Figure 2 A cross-sectional view of line A-A in the middle.

[0013] The following are labels in the attached diagram: 1. Quick clamp; 2. Top plate; 3. Guide post; 4. Support post; 5. Pressure plate; 6. Nylon block; 7. Nylon base; 8. Inflation connector; 9. Pressure head; 10. Ventilated plastic sealing head; 11. Sealing O-ring; 12. Nylon limit block. Detailed Implementation

[0014] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example

[0015] like Figures 1 to 3 As shown, an adjustable-length helium detection fixture of this utility model includes a top plate 2, support columns 4 and a nylon base 7. A set of support columns 4 are fixedly installed at the four corners of the top of the nylon base 7. The four corners of the bottom of the top plate 2 are fixedly connected to the top of the set of support columns 4. It also includes an inflation component and a clamping component. The clamping component is installed on the top plate 2 and the inflation component is installed on the nylon base 7. The inflation assembly includes an inflation connector 8, a venting plastic sealing head 10, and a sealing O-ring 11. The inflation connector 8 is installed on the nylon base 7. The output end of the inflation connector 8 is provided with a venting plastic sealing head 10, and the output end of the venting plastic sealing head 10 is provided with a sealing O-ring 11. like Figure 1 and Figure 3 As shown, the clamping assembly includes a quick clamp 1, a guide post 3, a pressure plate 5, a nylon block 6, and a pressure head 9. The quick clamp 1 is fixedly installed on the top plate 2. The guide post 3 is fixed to the moving end of the quick clamp 1 with a long screw. After the pressure head 9 is assembled with the pressure plate 5, it is fixedly connected to the bottom end of the guide post 3. The pressure plate 5 is slidably connected to four sets of support columns 4. It also includes a nylon limiting block 12, which is provided on the nylon base 7. The quick clamp 1 is fixedly connected to the top plate 2 by screws, and the support column 4 is fixedly connected to the top plate 2 and the nylon base 7 by bolts.

[0016] In this embodiment, the workpiece is placed on the nylon base 7, and the operator pushes the quick clamp 1, which causes the guide post 3 to move the pressure plate 5, nylon block 6 and pressure head 9 toward the workpiece, further tightening and fixing the workpiece with the pressure head 9. The output end of the venting plastic sealing head 10 is connected to the air inlet of the workpiece, and the output end of the venting plastic sealing head 10 and the air inlet of the workpiece are sealed by the sealing O-ring 11. The output end of the nitrogen pump is connected to the input end of the inflation connector 8. The nitrogen pump is started, and nitrogen enters the workpiece through the inflation connector 8, the venting plastic sealing head 10 and the sealing O-ring 11 to perform nitrogen testing.

[0017] The quick clamp 1 and the gas inflator 8 of the adjustable length helium inspection fixture of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0018] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. An adjustable-length helium inspection fixture, comprising a top plate (2), support columns (4), and a nylon base (7), wherein a set of support columns (4) is fixedly disposed at each of the four corners of the top of the nylon base (7), and the four corners of the bottom of the top plate (2) are fixedly connected to the top of the set of support columns (4), characterized in that, It also includes an inflation component and a clamping component. The clamping component is provided on the top plate (2), and the inflation component is provided on the nylon base (7).

2. The adjustable-length helium inspection fixture as described in claim 1, characterized in that, The inflation assembly includes an inflation connector (8), a vented plastic sealing head (10), and a sealing O-ring (11). The inflation connector (8) is installed on the nylon base (7). The output end of the inflation connector (8) is provided with a vented plastic sealing head (10), and the output end of the vented plastic sealing head (10) is provided with a sealing O-ring (11).

3. The adjustable-length helium inspection fixture as described in claim 2, characterized in that, The clamping assembly includes a quick clamp (1), a guide post (3), a pressure plate (5), a nylon block (6), and a pressure head (9). The quick clamp (1) is fixedly installed on the top plate (2). The guide post (3) is fixed to the moving end of the quick clamp (1) with a long screw. After the pressure head (9) is assembled with the pressure plate (5), it is fixedly connected to the bottom end of the guide post (3). The pressure plate (5) is slidably connected to four sets of support columns (4).

4. The adjustable-length helium inspection fixture as described in claim 1, characterized in that, It also includes a nylon limiting block (12), which is provided on the nylon base (7).

5. The adjustable-length helium inspection fixture as described in claim 3, characterized in that, The quick clamp (1) is fixedly connected to the top plate (2) by screws.

6. The adjustable-length helium inspection fixture as described in claim 1, characterized in that, The support column (4) is fixedly connected to the top plate (2) and the nylon base (7) by bolts.

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