Vacuum leak detection device

Abstract

The utility model discloses a vacuum leak detection device, and belongs to the field of part detection. Comprising an inspection box, a cavity is formed in the inspection box, bearing strips are symmetrically and horizontally fixed in the cavity, a to-be-detected box body is installed on the bearing strips in a lap joint mode, a communicating pipe is arranged at the top of the to-be-detected box body in a protruding mode, a protruding ring is arranged at the outer edge of the communicating pipe in a protruding mode, and a helium conducting pipe is installed on the inspection box; an inserting pipe is arranged at the bottom of the helium conducting pipe in a protruding mode, and a fixing assembly for assisting clamping and positioning is installed at the position, close to the bottom, of the helium conducting pipe. The beneficial effect of the utility model is that the vacuum leak detection device is provided. The helium communication pipe and the communication pipe can be quickly connected and fixed, it is avoided that the to-be-detected box body, the helium pipe and the like need to be mounted and connected with one another in a long time as much as possible, the overall mounting efficiency between the helium communication pipe and the communication pipe can be improved during work, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of parts detection, and in particular to a vacuum leak detection device. Background Art

[0002] Component vacuum testing can evaluate the sealing performance of the object being tested by simulating a vacuum environment under actual working conditions. This testing process can measure the leakage rate and amount of air leakage, thereby ensuring that the sealing performance of component boxes and systems meets the requirements and prevents air leakage or seepage during use. By testing the sealing performance of components, potential sealing problems can be discovered and resolved early. These test results can provide manufacturers with valuable feedback information to help them optimize their designs and improve manufacturing processes, thereby improving the sealing performance and quality of their products. Vacuum testing can ensure that the sealing performance of component boxes and systems meets the requirements and reduce failure rates and maintenance costs.

[0003] When inspecting a component box, it is necessary to connect and install the component box and the helium pipe. In the existing vacuum detection device, the pipe connection and installation are relatively cumbersome. Before and after the detection, it takes a long time to install and connect the box to be inspected and the helium pipe, etc., which cannot improve the overall detection efficiency of the device. Therefore, a vacuum leak detection device is needed to assist in solving this problem. Utility Model Content

[0004] The content of this application is used to introduce concepts in a brief form, which will be described in detail in the detailed implementation section below. The content of this application is not intended to identify the key features or essential features of the technical solution claimed for protection, nor is it intended to limit the scope of the technical solution claimed for protection.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide a vacuum leak detection device, including: an inspection box, a cavity is opened inside the inspection box, a receiving bar is symmetrically and horizontally fixed in the cavity, a box to be inspected is overlapped and installed on the receiving bar, a connecting pipe is protrudingly provided at the top of the box to be inspected, a protruding ring is protrudingly provided at the outer edge of the connecting pipe, a helium conducting pipe is installed on the inspection box, an insertion pipe is protrudingly provided at the bottom of the helium conducting pipe, and a fixing component for auxiliary clamping and positioning is installed near the bottom of the helium conducting pipe;

[0006] The fixing assembly includes a sleeve ring sleeved on the helium gas conducting tube, the helium gas conducting tube and the sleeve ring are threadedly matched, a push ring is embedded and installed at the bottom of the sleeve ring, a mounting seat is protrudingly provided near the bottom of the helium gas conducting tube, a clamping plate is hingedly installed at the mounting seat, a wedge block is fixed to the inner side of one end of the clamping plate close to the push ring, and the push ring cooperates with the wedge block on the clamping plate for extrusion.

[0007] Furthermore, a limiting block is protrudingly provided on the inner side of the push ring, and a limiting groove is provided at the outer edge of the helium conducting tube, and the limiting groove and the limiting block cooperate and slide with each other.

[0008] Furthermore, a reset cavity is provided inside the mounting seat, and a torsion spring for assisting the clamping plate in resetting is installed in the reset cavity.

[0009] Furthermore, a sealing cavity is provided at the bottom of the helium gas conduit, a sealing component is installed in the sealing cavity, a sealing opening is provided at the top of the connecting tube, and the sealing component cooperates with the sealing opening to seal.

[0010] Furthermore, the sealing assembly comprises a sealing ring slidably arranged in the sealing cavity, the bottom of the sealing ring protrudes out of the sealing cavity, and a push-out spring for assisting the sealing ring in pushing is installed in the sealing cavity.

[0011] Furthermore, a box cover is hingedly mounted on the front end of the inspection box via a hinge, a pressure display is mounted on the top of the inspection box, and the bottom of the inspection box is supported by a bracket.

[0012] Furthermore, a placing table is installed on one side of the bracket, a detector is placed on the placing table, a vacuum pump is installed at the bottom of the bracket, the inspection box is connected to the vacuum pump through a negative pressure pipe, and the middle section of the negative pressure pipe is connected to the detector through a connecting pipe.

[0013] Furthermore, a card interface is protrudingly provided at the outer edge of the box cover, and a positioning component for cooperating and pressing an auxiliary card interface is installed at the outer edge of the inspection box, the positioning component includes a positioning block fixed on the inspection box, a hinge seat is hingedly installed on the positioning block, a screw rod is protrudingly provided on the hinge seat, a pressure plate is installed on the screw rod, the screw rod and the pressure plate are threadedly engaged, and the pressure plate presses on the outer edge of the card interface positioning.

[0014] The beneficial effects of the present application are as follows: a vacuum leak detection device is provided, wherein the insertion tube is plugged and installed in the connecting tube through the cooperation between the set fixing assembly and the protruding ring, the sleeve ring is reversed, and the helium gas guide tube and the sleeve ring are threadedly matched, so that the sleeve ring is lowered as a whole, and the pushing ring is driven to move during the lowering process of the sleeve ring, so that the pressing plate is pushed and driven to be clamped and installed in the protruding ring, thereby completing the connection and fixation between the helium gas guide tube and the connecting tube, and avoiding the need to spend a long time to install and connect the box to be detected with the helium tube, etc., and the overall installation efficiency between the helium gas guide tube and the connecting tube can be improved during work, thereby improving production efficiency;

[0015] By cooperating between the provided card interface and the positioning assembly, the pressing plate is rotated, and the screw rod and the pressing plate are threadedly matched, so that the pressing plate covers the card interface, thereby completing the overall sealing and fastening of the box cover, and the overall rapid covering of the box cover can be achieved during work, and the inconvenience of the overall sealing of the box cover can be avoided as much as possible;

[0016] Through the provided sealing assembly, the sealing ring is clamped and installed in the sealing port during operation, and is pushed by the push-out spring to ensure the sealing of the overall connection between the connecting tube and the helium gas conducting tube, and to avoid the situation where the sealing of the connection is not in place and affects the subsequent test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The illustrative embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application.

[0018] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the components and elements are not necessarily drawn to scale.

[0019] In the attached picture:

[0020] Figure 1 is an overall schematic diagram according to an embodiment of the present application;

[0021] Figure 2 According to the embodiment of the present application Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 3 According to the embodiment of the present application Figure 1 A schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 4 It is a longitudinal cross-sectional view of the helium gas conduit corresponding to the fixed component according to an embodiment of the present application.

[0024] Reference numerals:

[0025] 1. Inspection box; 2. Box cover; 3. Pressure display; 4. Vacuum pump; 5. Detector; 6. Card interface; 7. Positioning assembly; 8. Positioning block; 9. Articulated seat; 10. Screw rod; 11. Pressure plate; 12. Box to be inspected; 121. Undertaking strip; 122. Connecting pipe; 123. Protruding ring; 13. Helium conducting pipe; 131. Limiting groove; 132. Insertion tube; 133. Sealing assembly; 1331. Sealing ring; 1332. Push-out spring; 14. Fixing assembly; 15. Sleeve ring; 16. Push ring; 161. Limiting block; 17. Mounting seat; 18. Torsion spring; 19. Pressing plate. DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0027] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0028] It should be noted that the concepts such as "first" and "second" mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0029] It should be noted that the modifications of "one" and "plurality" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, it should be understood as "one or more".

[0030] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] This specific embodiment is a vacuum leak detection device, such as Figure 1 and Figure 2As shown, the vacuum leak detection device includes an inspection box 1, which has a cavity inside, and a connecting bar 121 is symmetrically fixed horizontally in the cavity, and a box body 12 to be inspected is overlapped and installed on the connecting bar 121. A box cover 2 is hingedly installed at the front end of the inspection box 1, and a pressure display 3 is installed at the top of the inspection box 1. The bottom of the inspection box 1 is supported by a bracket, and a placement table is installed on one side of the bracket. A detector 5 is placed on the placement table, and a vacuum pump 4 is installed at the bottom of the bracket. The inspection box 1 and the vacuum pump 4 are connected through a negative pressure pipe, and the middle section of the negative pressure pipe is connected to the detector 5 through a connecting pipe. The detector 5 is a helium mass spectrometer leak detector. The model of the helium mass spectrometer leak detector is BW-930C, which can be used but not limited to this model.

[0032] A card interface 6 is protrudingly provided at the outer edge of the above-mentioned box cover 2, and a positioning component 7 that cooperates with the auxiliary card interface 6 is installed at the outer edge of the inspection box 1. The positioning component 7 includes a positioning block 8 fixed on the inspection box 1, and a hinge seat 9 is hingedly installed on the positioning block 8. A screw rod 10 is protrudingly provided on the hinge seat 9, and a pressure plate 11 is installed on the screw rod 10. The screw rod 10 and the pressure plate 11 are threadedly matched, and the pressure plate 11 is pressed on the outer edge of the positioning of the card interface 6.

[0033] By cooperating with the provided card interface 6 and the positioning assembly 7, the pressure plate 11 is rotated, and the screw rod 10 and the pressure plate 11 are threadedly engaged, so that the pressure plate 11 covers the card interface 6, thereby completing the overall sealing and fastening of the box cover 2, and realizing the overall rapid covering of the box cover 2 during operation, and avoiding the inconvenience of the overall sealing of the box cover 2 as much as possible.

[0034] Reference Figure 1 , Figure 3 and Figure 4 As shown, a connecting pipe 122 is protrudingly provided at the top of the box body 12 to be detected, and a protruding ring 123 is protrudingly provided at the outer edge of the connecting pipe 122. A helium conducting pipe 13 is installed on the inspection box 1, and an insertion pipe 132 is protrudingly provided at the bottom of the helium conducting pipe 13. A fixing component 14 for auxiliary card connection and positioning is installed near the bottom of the helium conducting pipe 13. The fixing component 14 includes a sleeve ring 15 sleeved on the helium conducting pipe 13, and the helium conducting pipe 13 and the sleeve ring 15 are threadedly matched. A pushing ring 16 is embedded and installed at the bottom of the sleeve ring 15. A mounting seat 17 is protrudingly provided near the bottom of the helium conducting pipe 13, and a clamping plate 19 is hingedly installed at the mounting seat 17. A wedge block is fixed on the inner side of one end of the clamping plate 19 close to the pushing ring 16. The pushing ring 16 cooperates with the wedge block on the clamping plate 19 for extrusion. A reset cavity is opened inside the mounting seat 17, and a torsion spring 18 for assisting the reset of the clamping plate 19 is installed in the reset cavity.

[0035] By cooperating between the set fixing component 14 and the protruding ring 123, the insertion tube 132 is plugged and installed in the connecting tube 122, and the sleeve ring 15 is reversed. The helium gas conducting tube 13 and the sleeve ring 15 are threadedly matched, so that the sleeve ring 15 is lowered as a whole. In the process of the sleeve ring 15 descending, the pushing ring 16 is driven to move, so that the clamping plate 19 is pushed and driven to be clamped and installed in the protruding ring 123, so as to complete the connection and fixation between the helium gas conducting tube 13 and the connecting tube 122, and try to avoid spending a long time to install and connect the box body 12 to be tested and the helium tube, etc., so as to improve the overall installation efficiency between the helium gas conducting tube 13 and the connecting tube 122 during work, and improve production efficiency.

[0036] A limiting block 161 is protrudingly provided on the inner side of the push ring 16, and a limiting groove 131 is provided at the outer edge of the helium gas conducting tube 13. The limiting groove 131 and the limiting block 161 cooperate and slide with each other. Through the cooperation between the setting limiting block 161 and the limiting groove 131, it can be ensured that the push ring 16 can move up and down stably during operation, and the overall rotation of the push ring 16 can be avoided as much as possible during the adjustment process.

[0037] The sealing assembly 133 includes a sealing ring 1331 slidably disposed in the sealing cavity. The bottom of the sealing ring 1331 extends out of the sealing cavity. A push-out spring 1332 is installed in the sealing cavity to assist the sealing ring 1331 in pushing.

[0038] By means of the provided sealing assembly 133, the sealing ring 1331 is snap-fitted and installed in the sealing port during operation, and is pushed by the push-out spring 1332 to ensure the sealing of the integral connection between the connecting tube 122 and the helium conducting tube 13, and to avoid the situation where the sealing of the connection is not in place and affects the subsequent detection results.

[0039] Working principle:

[0040] During operation, the box body 12 to be tested is placed on the receiving bar 121, the insertion tube 132 is installed in the connecting tube 122, the sleeve ring 15 is reversed, and the helium conducting tube 13 and the sleeve ring 15 are threadedly matched, so that the sleeve ring 15 is lowered as a whole. In the process of the sleeve ring 15 being lowered, the pushing ring 16 is driven to move, thereby pushing the clamping plate 19 and driving the clamping plate 19 to be clamped and installed in the protruding ring 123, thereby completing the connection and fixation between the helium conducting tube 13 and the connecting tube 122, and the torsion spring 18 is compressed as a whole in the process of the clamping plate 19 being squeezed.

[0041] After the installation of the box body 12 to be inspected is completed, the box cover 2 is covered on the inspection box 1, the screw rod 10 is rotated 90 degrees, the pressure plate 11 is covered on the card interface 6, and the pressure plate 11 is rotated. The screw rod 10 and the pressure plate 11 are threadedly engaged, so that the pressure plate 11 covers the card interface 6, thereby completing the overall sealing and fastening of the box cover 2. After the box cover 2 is completed, the inside of the inspection box 1 is evacuated by the vacuum pump 4. After reaching the specified vacuum degree, helium is injected into the box body 12 to be inspected through the helium conduit 13. The detector 5 is used to detect whether there are helium molecules inside the inspection box 1, so as to effectively determine the overall sealing of the box body 12 to be inspected. After the inspection of the box body 12 to be inspected is completed, the helium in the box body 12 to be inspected is completely extracted, and the device is restored to its initial state.

[0042] The above descriptions are only some preferred embodiments of the present disclosure and an explanation of the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) and the technical solutions formed.

Claims

1. A vacuum leak detection device, comprising: The inspection box (1) is characterized in that a cavity is provided inside the inspection box (1), a connecting bar (121) is symmetrically fixed in the cavity, a box body (12) to be inspected is overlapped and installed on the connecting bar (121), a connecting pipe (122) is protrudingly provided at the top of the box body (12) to be inspected, a protruding ring (123) is protrudingly provided at the outer edge of the connecting pipe (122), a helium conducting pipe (13) is installed on the inspection box (1), an insertion pipe (132) is protrudingly provided at the bottom of the helium conducting pipe (13), and a fixing component (14) for auxiliary clamping and positioning is installed near the bottom of the helium conducting pipe (13); The fixing assembly (14) comprises a sleeve ring (15) sleeved and installed on the helium conducting tube (13); the helium conducting tube (13) and the sleeve ring (15) are threadedly matched; a push ring (16) is embedded and installed at the bottom of the sleeve ring (15); a mounting seat (17) is protrudingly provided near the bottom of the helium conducting tube (13); a clamping plate (19) is hingedly installed at the mounting seat (17); a wedge block is fixed to the inner side of one end of the clamping plate (19) close to the push ring (16); the push ring (16) and the wedge block on the clamping plate (19) are pressed together.

2. The vacuum leak detection device according to claim 1, characterized in that: A limiting block (161) is protrudingly provided on the inner side of the push ring (16), and a limiting groove (131) is provided at the outer edge of the helium conducting tube (13), and the limiting groove (131) and the limiting block (161) are slidably matched.

3. The vacuum leak detection device according to claim 1, characterized in that: A reset cavity is provided inside the mounting seat (17), and a torsion spring (18) is installed in the reset cavity to assist the clamping plate (19) in resetting.

4. The vacuum leak detection device according to claim 1, characterized in that: A sealed cavity is provided at the bottom of the helium gas conduit (13), a sealing component (133) is installed in the sealed cavity, a sealed opening is provided at the top of the connecting tube (122), and the sealing component (133) cooperates with the sealed opening to seal.

5. The vacuum leak detection device according to claim 4, characterized in that: The sealing assembly (133) comprises a sealing ring (1331) slidably arranged in a sealing cavity, the bottom of the sealing ring (1331) protrudes out of the sealing cavity, and a push-out spring (1332) is installed in the sealing cavity to assist the sealing ring (1331) in pushing.

6. The vacuum leak detection device according to claim 1, characterized in that: The front end of the inspection box (1) is hingedly mounted with a box cover (2), the top of the inspection box (1) is mounted with a pressure display (3), and the bottom of the inspection box (1) is supported by a bracket.

7. The vacuum leak detection device according to claim 6, characterized in that: A placement table is installed on one side of the bracket, a detector (5) is placed on the placement table, a vacuum pump (4) is installed at the bottom of the bracket, the inspection box (1) and the vacuum pump (4) are connected through a negative pressure pipe, and the middle section of the negative pressure pipe is connected to the detector (5) through a connecting pipe.

8. The vacuum leak detection device according to claim 6, characterized in that: A card interface (6) is protrudingly provided at the outer edge of the box cover (2), and a positioning assembly (7) for cooperating and pressing the auxiliary card interface (6) is installed at the outer edge of the inspection box (1), and the positioning assembly (7) comprises a positioning block (8) fixed on the inspection box (1), and a hinge seat (9) is hingedly installed on the positioning block (8), and a screw rod (10) is protrudingly provided on the hinge seat (9), and a pressure plate (11) is installed on the screw rod (10), and the screw rod (10) and the pressure plate (11) are threadedly engaged, and the pressure plate (11) is pressed on the outer edge of the positioning of the card interface (6).

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