Heat exchanger helium detection tool

Abstract

The utility model relates to the technical field of helium detection tools, in particular to a helium detection tool for a heat exchanger, which is characterized in that when the helium detection tool is used, a detected workpiece is placed on a nylon supporting block, a quick clamping assembly is operated to enable a sealing assembly to move leftwards under the cooperation of a linear sliding rail group, the detected workpiece abuts against a workpiece supporting plate, and the sealing assembly continuously extrudes the workpiece; therefore, the to-be-sealed area of the workpiece is sealed, the sealing action is completed, and the detection efficiency is improved. Comprising a tool bottom plate, a nylon supporting block, a workpiece supporting plate, a linear sliding rail set and a quick clamping assembly, the nylon supporting block, the workpiece supporting plate, the linear sliding rail set and the quick clamping assembly are arranged at the top end of the tool bottom plate, the tool further comprises a sealing assembly, the moving end of the quick clamping assembly is connected with the sealing assembly, and the sealing assembly is in sliding connection with the linear sliding rail set.

Description

Technical Field

[0001] This utility model relates to the technical field of helium testing fixtures, and in particular to a heat exchanger helium testing 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:

[0004] 1. The old-style tooling uses end face sealing, which has an unsatisfactory sealing effect and causes the sealing rubber to be damaged quickly.

[0005] 2. The old-style tooling requires a large force for end face sealing, which can cause some damage to the workpiece. Utility Model Content

[0006] To solve the above-mentioned technical problems, this utility model provides a heat exchanger helium detection tool.

[0007] This utility model discloses a heat exchanger helium testing fixture, comprising a fixture base plate, a nylon support block, a workpiece support plate, a linear slide rail assembly, and a quick-clamp assembly. The top of the fixture base plate is respectively provided with the nylon support block, the workpiece support plate, the linear slide rail assembly, and the quick-clamp assembly. It also includes a sealing assembly. The moving end of the quick-clamp assembly is connected to the sealing assembly, and the sealing assembly is slidably connected to the linear slide rail assembly. In use, the workpiece to be tested is placed on the nylon support block. Operating the quick-clamp assembly causes the sealing assembly to move to the left in cooperation with the linear slide rail assembly. The workpiece resists the workpiece support plate, and the sealing assembly continues to compress the workpiece, thereby sealing the area to be sealed on the workpiece, completing the sealing action and improving testing efficiency.

[0008] Preferably, the sealing assembly includes a sealing assembly body, a right limiting block, a plastic sealing head, a left limiting block, a connecting adapter, and a quick connector. Two sets of plastic sealing heads are respectively fixed to the sealing assembly body by screws from the left and right limiting blocks. Two connecting adapters are mounted on the side of the sealing assembly body, each set of adapters being equipped with a quick connector. The plastic sealing head seals the air inlet of the workpiece being inspected. The guide layer at the head of the plastic sealing head first contacts the workpiece, and as it continues to enter, the position of the plastic sealing head is adjusted by the workpiece's sealing area. The plastic sealing head moves within the limiting positions of the left and right limiting blocks. After the plastic sealing head is completely sealed to the workpiece, it is in complete contact with the workpiece's sealing surface. The plastic sealing head forms a certain angle with the sealing assembly body. The left and right limiting blocks protect the angle created by the plastic sealing head; an excessively large angle prevents it from locking.

[0009] Preferably, it also includes an adjusting O-ring, wherein an adjusting O-ring is installed between the plastic sealing head and the sealing component body; after the plastic sealing head generates an angle, the adjusting O-ring partially releases the compression amount, but all of it is within the effective sealing compression amount, ensuring the overall sealing characteristics.

[0010] Preferably, it also includes sealing O-rings, with two sealing O-rings mounted on the top of each plastic sealing head; the plastic sealing head enters the area of ​​the workpiece to be sealed, and the sealing O-rings seal the workpiece.

[0011] Preferably, it also includes a handle, which is installed on the base plate of the tooling; the operator can pick up the device by using the handle, which improves convenience.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: When in use, the workpiece to be inspected is placed on the nylon support block, and the quick clamp assembly is operated to make the sealing assembly move to the left with the cooperation of the linear slide rail assembly. The workpiece to be inspected resists the workpiece support plate, and the sealing assembly continues to squeeze the workpiece, thereby sealing the area of ​​the workpiece to be sealed, completing the sealing action, and improving the inspection efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the European-style model;

[0014] Figure 2 This is an enlarged structural diagram of the connecting adapter and quick connector, etc.

[0015] Figure 3 This is an enlarged structural diagram of the plastic sealing head and sealing O-ring, etc.

[0016] The following are labeled in the attached diagram: 1. Tooling base plate; 2. Nylon support block; 3. Workpiece support plate; 4. Sealing assembly; 5. Linear slide rail assembly; 6. Quick clamp assembly; 7. Handle; 41. Sealing assembly body; 42. Right limit block; 43. Plastic sealing head; 44. Left limit block; 45. Connecting adapter; 46. Quick connector; 47. Adjusting O-ring; 48. Sealing O-ring. Detailed Implementation

[0017] 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.

[0018] Example

[0019] like Figures 1 to 3As shown, a heat exchanger helium testing fixture of the present invention includes a fixture base plate 1, a nylon support block 2, a workpiece support plate 3, a linear slide rail assembly 5, and a quick clamp assembly 6. The top of the fixture base plate 1 is respectively provided with the nylon support block 2, the workpiece support plate 3, the linear slide rail assembly 5, and the quick clamp assembly 6. It also includes a sealing assembly 4. The moving end of the quick clamp assembly 6 is connected to the sealing assembly 4, and the sealing assembly 4 is slidably connected to the linear slide rail assembly 5.

[0020] The sealing assembly includes a sealing assembly body 41, a right limiting block 42, a plastic sealing head 43, a left limiting block 44, a connecting adapter 45, and a quick connector 46. The two sets of plastic sealing heads 43 are respectively fixed to the sealing assembly body 41 by screws from the left limiting block 44 and the right limiting block 42. The sealing assembly body 41 is equipped with two connecting adapters 45 on its side, and each set of connecting adapters 45 is equipped with a quick connector 46.

[0021] It also includes an adjusting O-ring 47, which is installed between the plastic sealing head 43 and the sealing assembly body 41;

[0022] It also includes sealing O-rings 48, with two sealing O-rings 48 mounted on the top of each plastic sealing head 43.

[0023] In this embodiment, during use, the workpiece to be inspected is placed on the nylon support block 2. The quick-clamp assembly 6 is operated to move the sealing assembly 4 to the left in cooperation with the linear slide rail assembly 5. The workpiece to be inspected resists the workpiece support plate 3, and the sealing assembly 4 continues to squeeze the workpiece. The plastic sealing head 43 seals the air inlet end of the workpiece. The guide layer of the head of the plastic sealing head 43 contacts the workpiece first, and after it continues to enter, the position of the plastic sealing head 43 is adjusted by the sealing area of ​​the workpiece. The plastic sealing head 43 moves within the limiting positions of the left limiting block 44 and the right limiting block 42. After the plastic sealing head 43 is completely sealed with the workpiece, the plastic sealing head 43 is completely attached to the sealing surface of the workpiece. The plastic sealing head 43 forms a certain angle with the sealing assembly body 41. The left limiting block 44 and the right limiting block 42 protect the angle generated by the plastic sealing head 43. If the angle is too large, it cannot be locked.

[0024] The adjusting O-ring 47 and sealing O-ring 48 of the heat exchanger helium testing tool 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.

[0025] 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. A heat exchanger helium inspection fixture, comprising a fixture base plate (1), a nylon support block (2), a workpiece support plate (3), a linear slide rail assembly (5), and a quick-clamp assembly (6), wherein the top of the fixture base plate (1) is respectively provided with the nylon support block (2), the workpiece support plate (3), the linear slide rail assembly (5), and the quick-clamp assembly (6), characterized in that, It also includes a sealing component (4), the movable end of the quick clamp component (6) is connected to the sealing component (4), and the sealing component (4) is slidably connected to the linear slide rail assembly (5).

2. The helium detection tool for heat exchanger according to claim 1, wherein, The sealing assembly includes a sealing assembly body (41), a right limiting block (42), a plastic sealing head (43), a left limiting block (44), a connecting adapter (45), and a quick connector (46). The two sets of plastic sealing heads (43) are fixed to the sealing assembly body (41) by screws from the left limiting block (44) and the right limiting block (42), respectively. The sealing assembly body (41) is equipped with two connecting adapters (45) on its side, and each set of connecting adapters (45) is equipped with a quick connector (46).

3. The helium detection tool for heat exchanger according to claim 2, wherein, It also includes an adjusting O-ring (47), which is installed between the plastic sealing head (43) and the sealing assembly body (41).

4. The helium inspection tool for heat exchanger as claimed in claim 2, wherein, It also includes sealing O-rings (48), with two sealing O-rings (48) on the top of each plastic sealing head (43).

5. The helium inspection tool for heat exchanger as claimed in claim 1, wherein, It also includes a handle (7), which is installed on the tooling base plate (1).

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