Automatic joint sealing inflation tool applied to helium detection

Abstract

The utility model relates to the technical field of airtightness detection, and particularly discloses an automatic joint sealing inflation tool applied to helium detection, which comprises a cylinder serving as power. The piston end of the air cylinder is sleeved with a floating connector in a threaded mode. The floating connector is connected with a movable frame in a sleeved mode. The movable frame is fixedly connected with a closing plate; the sealing plate is detachably and fixedly connected with a functional frame; the floating connector, the movable frame, the sealing plate, the functional frame and the sealing pipe are pushed to advance through the action of the air cylinder to block the pipe to be detected, the sealing pipe and the pipe to be detected are in a pressure sealing state through the pressure of the air cylinder, then the second quick-release connector is externally connected with a high-pressure air source, compressed air can enter the inflation hole and is expanded, and therefore the sealing pipe and the pipe to be detected are extruded. Therefore, the connection between the closed pipe and the to-be-detected pipe is higher in strength and sealed, then helium is injected into the first quick-release connector, and the helium enters the closed pipe through the side block and then enters the to-be-detected pipe for high-pressure helium detection.

Description

Technical Field

[0001] This utility model relates to the field of airtightness testing technology, specifically an automatic joint sealing and inflation tooling for helium testing. Background Technology

[0002] Helium 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 certain vacuum level requirement, and the vacuum chamber is connected to the leak detection port of a helium mass spectrometer.

[0003] Chinese utility model patent CN213902766U, published on August 6, 2021, discloses a helium detection fixture, including a fixed component, a moving component, a helium injection component located below the moving component, and a leak detection fixture located on a worktable. The fixed component has a vertical moving unit, and the moving component is connected to the vertical moving unit. The helium injection component has a helium shroud assembly, which is connected to the leak detection fixture via the moving component, and the helium outlet of the helium injection component corresponds to the leak detection fixture. The leak detection fixture has a base, and the base has a vacuum chamber. The upper part of the vacuum chamber is equipped with a sealing gasket, and the lower part is connected to a vacuum generator for vacuuming. This utility model is low in cost and high in efficiency, and can meet the needs of rapid leak detection in modern industrial production lines.

[0004] However, the aforementioned publicly available solutions have the following shortcomings: Existing automated helium testing fixtures all use a cylinder to move a sleeve and fit it onto the pipe to be tested, using the pressure of the cylinder for sealing. This method meets the sealing requirements for low-pressure testing, but under high-pressure testing, the sealing performance is poor, which can lead to leakage and affect the test results. Utility Model Content

[0005] The purpose of this invention is to solve the technical problem that existing automated helium testing fixtures all use a cylinder to move a sleeve and fit it onto the pipe to be tested, using the pressure of the cylinder to create a seal. This method meets the sealing requirements for low-pressure testing, but under high-pressure testing, the sealing performance is poor, which can lead to leakage and affect the test results. The invention provides an automatic joint sealing and inflation fixture for helium testing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution;

[0007] The present invention discloses an automatic connector sealing and inflation fixture for helium detection, comprising a cylinder as a power source; a floating connector threaded onto the piston end of the cylinder; a movable frame sleeved onto the floating connector; a sealing plate fixedly connected to the movable frame; a functional frame detachably fixedly connected to the sealing plate; a first quick-release connector and a sealing tube detachably fixedly connected to an opening on a side block of the functional frame; an inflation hole on the sealing tube; and a second quick-release connector fixedly connected to the inflation hole.

[0008] Furthermore, an intermediate plate is fixedly connected to the cylinder; a plurality of first fasteners are inserted into the intermediate plate through openings; a fixing bracket is sleeved on the first fasteners; a plurality of second fasteners are inserted into the fixing bracket through openings.

[0009] Furthermore, the second fastener is threaded onto the enclosure; the enclosure contains the tube to be tested.

[0010] This utility model provides an automatic connector sealing and inflation fixture for helium testing, which has the following features:

[0011] Beneficial effects:

[0012] 1. This utility model uses a cylinder to push the floating joint, moving frame, sealing plate, functional frame and sealing tube forward to block the tube under test. The pressure of the cylinder makes the sealing tube and the tube under test in a pressure-sealed state. Then, the second quick-release joint is connected to a high-pressure gas source, which can introduce compressed gas into the inflation hole and expand it, thereby squeezing the sealing tube and the tube under test, thus making the connection between the sealing tube and the tube under test stronger and more sealed. Then, helium is injected into the first quick-release joint. The helium enters the sealing tube through the side block and then enters the tube under test for high-pressure helium detection.

[0013] 2. This utility model can stably fix the fixing frame to the side of the closed frame by using multiple second fasteners, thereby enabling both suspension and stable fixing, allowing the cylinder to reciprocate smoothly. Attached Figure Description

[0014] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings;

[0015] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the second isometric structure of this utility model;

[0017] Figure 3 This is a top view of the structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the first assembly and usage structure of this utility model;

[0019] Figure 5 This is a schematic diagram of the second assembly and usage structure of this utility model.

[0020] The following are the labels in the diagram: 1. Cylinder; 2. Intermediate plate; 3. First fastener; 4. Fixed frame; 5. Second fastener; 6. Moving frame; 7. Enclosed plate; 8. Functional frame; 9. Side block; 10. First quick-release connector; 11. Sealing tube; 12. Inflation hole; 13. Second quick-release connector; 14. Stepped groove; 15. Floating connector; 16. Enclosed frame; 17. Tube to be tested. Detailed Implementation

[0021] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0022] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] It should be noted that all directional indications (such as up-down-left-right-forward-backward...) in the embodiments of this utility model are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly. The connection can be a direct connection or an indirect connection.

[0024] Please see Figure 1-5As shown, an automatic connector sealing and inflation fixture for helium detection includes a cylinder 1 as a power source; a floating connector 15 is threaded onto the piston end of the cylinder 1; a movable frame 6 is sleeved on the floating connector 15; a sealing plate 7 is fixedly connected to the movable frame 6; a functional frame 8 is detachably fixedly connected to the sealing plate 7; a side block 9 is detachably fixedly connected to the functional frame 8, and a first quick-release connector 10 and a sealing tube 11 are connected and fixedly connected through an opening on the side block 9; an inflation hole 12 is provided on the sealing tube 11; a second quick-release connector 13 is connected and fixedly connected to the inflation hole 12, and the floating connector 15 is pushed by the action of the cylinder 1. The moving frame 6, the sealing plate 7, the functional frame 8, and the sealing tube 11 move forward to block the tube under test 17. The pressure of the cylinder 1 makes the sealing tube 11 and the tube under test 17 in a pressure-sealed state. Then, the second quick-release connector 13 is connected to a high-pressure gas source, which can introduce compressed gas into the inflation hole 12 and expand it, thereby squeezing the sealing tube 11 and the tube under test 17, thus making the connection between the sealing tube 11 and the tube under test 17 stronger and more sealed. Then, helium is injected into the first quick-release connector 10. The helium enters the sealing tube 11 through the side block 9, and then enters the tube under test 17 for high-pressure helium testing.

[0025] A middle plate 2 is fixedly connected to the cylinder 1; a plurality of first fasteners 3 are inserted into the middle plate 2 through openings; a fixing frame 4 is sleeved on the first fasteners 3; a plurality of second fasteners 5 are inserted into the fixing frame 4 through openings. The fixing frame 4 can be stably fixed to the side of the closed frame 6 by the plurality of second fasteners 5, so that it can be suspended and fixed stably, so that the cylinder 1 can reciprocate smoothly.

[0026] The second fastener 5 is threaded onto the enclosure 16; the enclosure 16 contains the tube to be tested 17.

[0027] The fixed frame 4 and the intermediate plate 2 are provided with through holes for clearance of the cylinder 1, so that the piston rod of the cylinder 1 can reciprocate without resistance.

[0028] A stepped groove 14 is provided on the closed tube 11. The stepped groove 14 makes the connection area with the tube to be tested 17 larger, thus making the connection more stable.

[0029] The sealing tube 11 is made of a flexible material, which allows it to be easily blocked to seal the tube 17 under test. It can also be deformed and clamped to seal the tube 17 under test after the air inlet 12 is filled with high-pressure gas, so that the seal can be maintained even when high-pressure gas is injected into the sealing tube 11 for helium gas detection.

[0030] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An automatic joint sealing and gas filling tool applied to helium detection, characterized in that; Including as power cylinder (1);The piston end of the cylinder (1) is sleeved with a floating joint (15);The floating joint (15) is sleeved with a moving frame (6);The moving frame (6) is fixedly connected with a closure plate (7);The closure plate (7) is detachably connected with a functional frame (8);The functional frame (8) is detachably connected with a side block (9) and a closed tube (11) connected through a hole in the side block (9);The closed tube (11) is provided with an inflation hole (12);The inflation hole (12) is connected with a second quick release joint (13).

2. The automatic joint sealing and air charging tooling for helium detection according to claim 1, characterized in that: The cylinder (1) is fixedly connected with an intermediate plate (2);A plurality of first fasteners (3) are inserted into the intermediate plate (2);The first fasteners (3) are sleeved with a fixed frame (4);The fixed frame (4) is inserted into a plurality of second fasteners (5).

3. The automatic joint sealing and air charging tooling for helium detection of claim 2, wherein: The second fasteners (5) are threadedly connected to a closed frame (16);The closed frame (16) is provided with a to-be-measured tube (17).

4. The automatic joint sealing and air charging tooling for helium detection of claim 2, wherein: The fixed frame (4) and the intermediate plate (2) are provided with through holes corresponding to the cylinder (1).

5. The automatic joint sealing and air charging tooling for helium detection of claim 1, wherein: The closed tube (11) is provided with a stepped groove (14).

6. The automatic joint sealing and air charging tooling for helium detection of claim 1, wherein: The closed tube (11) is made of flexible material.

Images