Leak detection device

Abstract

The utility model relates to a leak detection device, which comprises a plugging assembly used for plugging an end section of a workpiece to be detected, and is characterized in that the plugging assembly comprises a seat body, a first opening is formed in the seat body, a second opening is formed in the seat body, and the end section of the workpiece to be detected can partially extend into the cavity through the first opening; the limiting part is arranged on the inner ring wall of the seat body; the sealing piece is arranged on the limiting part and is provided with a flange protruding out of the limiting part; and when the end section of the workpiece to be detected is inserted into the first opening, the flange of the sealing element is extruded, so that the gap between the end section of the workpiece to be detected and the seat body is blocked, and the concave cavity forms an independent closed space. The plugging assembly has the advantages that the plugging assembly can facilitate plugging of the end section of the to-be-detected workpiece, and the plugging effect is improved under the action of the sealing piece.

Description

Technical Field

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

[0002] In the prior art, some workpieces need to strictly ensure that their air tightness meets the design during the production process, and generally the workpiece is tested for air tightness as a whole. However, when testing the air tightness of such workpieces, in order to ensure the accuracy of the air tightness test, it is necessary to seal the pipe on the workpiece (the pipe can be an air pipe or a water pipe).

[0003] In order to achieve the blocking of the pipeline, a Chinese utility model patent with patent number ZL202320750933.7 (authorization announcement number CN219912209U) discloses a blocking joint for an airtight leak detection device, which includes a blocking cover arranged on the outlet pipe, a sealing device for sealing one end of the outlet pipe is arranged on the blocking cover, and the blocking cover and the outlet pipe are detachably connected via a locking device. The above-mentioned locking device includes an annular groove arranged on the outlet pipe, and cams for use with the annular groove are arranged on both sides of the blocking cover.

[0004] Although the above-mentioned plugging joint can drive the cam to rotate by rotating the pressure rod, and then drive the cam to cooperate with the annular groove, so that the plugging joint presses the sealing gasket against the end of the air outlet pipe to achieve plugging. However, the above-mentioned plugging joint has the following limitations: the above-mentioned cam is extended into the plugging cover, and due to the limited space inside the plugging cover, it will affect the plugging cover to the end of the air outlet pipe; and one side of the above-mentioned cam is fixed on the pressure rod arranged outside the plugging cover, so that when the space inside the plugging cover is limited, it is difficult for the cam to rotate, thereby affecting the plugging effect. For this reason, it is necessary to further improve the existing technology. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a leak detection device which can conveniently block and has a good blocking effect in view of the above-mentioned prior art.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: the leak detection device includes a blocking component for blocking the end section of the workpiece to be detected, characterized in that: the blocking component includes:

[0007] A seat body, wherein a concave cavity is formed in the seat body, and a first opening is provided on the seat body for allowing the end section of the workpiece to be inspected to partially extend into the concave cavity;

[0008] A limiting portion is provided on the inner ring wall of the seat body;

[0009] A sealing member, arranged on the limiting portion and having a flange protruding from the limiting portion;

[0010] When the end section of the workpiece to be inspected is inserted into the first opening, the flange of the sealing member is squeezed to block the gap between the end section of the workpiece to be inspected and the seat body so that the cavity forms an independent closed space.

[0011] In order to allow air to enter the end section of the workpiece to be inspected so as to detect leaks in the workpiece, the seat body is provided with a second opening on the wall opposite to the first opening, and the second opening can be sealed with an air intake mechanism for supplying air to the end section of the workpiece to be inspected.

[0012] In order to improve the locking of the blocking assembly with the end section of the workpiece to be detected and to improve the installation stability, preferably, the blocking assembly further comprises a locking member capable of locking the seat body with the end section of the workpiece to be detected.

[0013] There are many kinds of structures of the above-mentioned locking member. Preferably, the locking member includes a main body, and the main body is provided with a bayonet arranged outside the end section of the workpiece to be detected along the Z-axis direction perpendicular to the axis of the workpiece to be detected, and a first mounting port is provided above the bayonet. Correspondingly, the seat body is partially protruded outwardly with a convex portion in the radial direction of the first opening, and the convex portion is provided with a second mounting port corresponding to the first mounting port, and the locking member also includes a locking member capable of locking the main body and the convex portion, and the locking member is connected to the first mounting port and the second mounting port.

[0014] In order to adaptively adjust the position of the bayonet of the main body relative to the workpiece to be inspected so as to adapt to the locking of workpieces of different sizes to be inspected, preferably, the aperture of the first mounting port is provided with a sliding area along the Z-axis direction which can slide relative to the locking member, thereby changing the position of the bayonet of the main body relative to the workpiece to be inspected.

[0015] In order to collect the leak detection liquid during the leak detection process, the invention also includes a mounting frame for placing the workpiece to be detected and a detachable collection box arranged below the mounting frame for collecting the leak detection liquid.

[0016] In order to prevent the workpiece to be detected from being installed in an incorrect position, a positioning piece for positioning the workpiece to be detected is also provided on the mounting frame.

[0017] In order to adapt to different workpieces to be inspected, the positioning member is arranged on the mounting frame in a positionally adjustable manner.

[0018] Compared with the prior art, the advantage of the utility model lies in that: by setting a sealing component, when the end section of the workpiece to be detected is inserted into the first opening of the seat body, the flange of the sealing member is squeezed, thereby sealing the gap between the end section of the workpiece to be detected and the seat body so that the concave cavity forms an independent enclosed space. Therefore, the sealing component can facilitate the sealing of the end section of the workpiece to be detected, and improve the sealing effect through the action of the sealing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the leak detection device in the embodiment of the utility model;

[0020] Figure 2 for Figure 1 Schematic diagram of part of the structure (the workpiece to be detected is omitted);

[0021] Figure 3 This is a structural schematic diagram of the blocking assembly in the embodiment of the utility model (one end of the blocking cover is connected to the air intake mechanism);

[0022] Figure 4 for Figure 3 A cross-sectional view of

[0023] Figure 5 for Figure 3 Exploded diagram of

[0024] Figure 6 This is a schematic structural diagram of the leak detection device in another angle in an embodiment of the utility model;

[0025] Figure 7 It is a schematic diagram of the structure of the blocking assembly in an embodiment of the utility model (one end of the blocking cover is a closed end). DETAILED DESCRIPTION

[0026] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 7 The figure shows a preferred embodiment of the present utility model. The leak detection device in this embodiment comprises a blocking component 1 for blocking the end section 1a of the workpiece a to be detected.

[0028] The sealing component 1 includes a seat body 11, a limiting portion 12 and a sealing member 13. A concave cavity 10 is formed in the seat body 11, and a first opening 111 is provided on the seat body 11 for partially extending the end section 1a of the workpiece a to be detected into the concave cavity 10; the limiting portion 12 is provided on the inner ring wall of the seat body 11; the sealing member 13 is arranged on the limiting portion 12 and has a flange protruding from the limiting portion 12; when the end section 1a of the workpiece a to be detected is inserted into the first opening 111, the flange of the sealing member 13 is squeezed, thereby sealing the gap between the end section 1a of the workpiece a to be detected and the seat body 11 so that the concave cavity 10 forms an independent closed space.

[0029] like Figures 3 to 5 As shown, in this embodiment, the seat body 11 is provided with a second opening 112 on the wall opposite to the first opening 111, and the second opening 112 can be sealed with an air intake mechanism 2 for supplying air to the end section 1a of the workpiece a to be inspected. Of course, the air intake mechanism 2 can also be a water intake mechanism, and of course, it can also be as Figure 7 As shown, the wall portion of the seat body 11 opposite to the first opening 111 is a blocking end. Figure 1 As shown, in order to detect the air tightness of the workpiece a to be detected, the end section 1a of the workpiece a to be detected is ventilated, and the other end sections of the workpiece a to be detected are blocked.

[0030] In order to achieve a stable blockage, the blocking assembly 1 further includes a locking member 3 capable of locking the seat body 11 with the end section 1a of the workpiece a to be inspected. Figure 5 As shown, the locking member 3 in this embodiment includes a body 31, the body 31 is provided with a bayonet 311 along the Z-axis direction perpendicular to the axis of the workpiece a to be detected, which is provided outside the end section 1a of the workpiece a to be detected, and a first mounting opening 312 is provided above the bayonet 311. Correspondingly, the seat 11 is partially protruded with a convex portion 113 in the radial direction of the first opening 111, and the convex portion 113 is provided with a second mounting opening 1131 corresponding to the first mounting opening 312. The locking member 3 also includes a locking member 32 capable of locking the body 31 with the convex portion 113, the locking member 32 is connected to the first mounting opening 312 and the second mounting opening 1131, and the locking member 32 in this embodiment is a bolt. In addition, the diameter of the first mounting opening 312 is provided with a sliding area 4 capable of sliding relative to the locking member 32 along the Z-axis direction, thereby changing the position of the bayonet 311 of the body 31 relative to the workpiece a to be detected.

[0031] It also includes a mounting frame 5 for placing the workpiece a to be detected and a detachable collection box 6 arranged below the mounting frame 5 for collecting the leakage detection liquid. The mounting frame 5 is also provided with a positioning member 7 for positioning the workpiece a to be detected. The positioning member 7 in this embodiment is arranged on the mounting frame 5 in a positionally adjustable manner.

[0032] The working process of the leak detection device in this embodiment is as follows:

[0033] A. Assemble the plugging assembly 1 on the end section 1a;

[0034] Specifically, there are two plugging components 1, namely, a first plugging component and a second plugging component. The seat body 11 of the plugging component is sealed and connected with the air intake mechanism 2 on the wall portion opposite to the first opening 111; the seat body 11 of the second plugging component is a plugging end on the wall portion opposite to the first opening 111. The first plugging component is assembled on the end section 1a of the workpiece a to be inspected (the end section 1a is the entrance of the channel to be inspected of the workpiece a to be inspected), and the second plugging component is assembled on the outlet of the channel to be inspected of the workpiece a to be inspected;

[0035] B. Use the air intake mechanism 2 to introduce gas into the end section 1a of the workpiece a to be inspected, and spray the leak detection liquid on the outer wall of the channel to be inspected of the workpiece a to be inspected;

[0036] C. Observe whether there is any leakage on the outer wall of the channel to be tested of the workpiece a to be tested, and the leak detection result can be obtained.

Claims

1. A leak detection device, comprising a plugging assembly (1) for plugging an end section (1a) of a workpiece (a) to be detected, characterized in that: The blocking component (1) comprises: A seat body (11), wherein a cavity (10) is formed in the seat body (11), and a first opening (111) is provided on the seat body (11) for allowing an end section (1a) of a workpiece (a) to be inspected to partially extend into the cavity (10); A limiting portion (12) is provided on the inner ring wall of the seat body (11); A sealing member (13) is arranged on the limiting portion (12) and has a flange protruding from the limiting portion (12); When the end section (1a) of the workpiece (a) to be inspected is inserted into the first opening (111), the flange of the sealing member (13) is squeezed, thereby sealing the gap between the end section (1a) of the workpiece (a) to be inspected and the seat body (11) so that the cavity (10) forms an independent closed space.

2. The leak detection device according to claim 1, characterized in that: The seat body (11) is provided with a second opening (112) on a wall portion opposite to the first opening (111), and the second opening (112) can be sealedly connected to an air intake mechanism (2) for supplying air to an end section (1a) of a workpiece (a) to be inspected.

3. The leak detection device according to claim 1 or 2, characterized in that: The blocking assembly (1) also includes a locking component (3) capable of locking the seat body (11) and the end section (1a) of the workpiece (a) to be inspected.

4. The leak detection device according to claim 3, characterized in that: The locking component (3) comprises a main body (31), the main body (31) is provided with a bayonet (311) which is arranged outside the end section (1a) of the workpiece (a) to be detected along the Z-axis direction perpendicular to the axis of the workpiece (a) to be detected, and a first mounting opening (312) is arranged above the bayonet (311); correspondingly, the seat body (11) is provided with a convex portion (113) protruding partially outward in the radial direction of the first opening (111), and the convex portion (113) is provided with a second mounting opening (1131) corresponding to the first mounting opening (312); and the locking component (3) further comprises a locking member (32) which can lock the main body (31) with the convex portion (113), and the locking member (32) is connected to the first mounting opening (312) and the second mounting opening (1131).

5. The leak detection device according to claim 4, characterized in that: The aperture of the first installation opening (312) is provided with a sliding area (4) along the Z-axis direction that can slide relative to the locking member (32), thereby changing the position of the bayonet (311) of the body (31) relative to the workpiece (a) to be detected.

6. The leak detection device according to claim 3, characterized in that: It also comprises a mounting frame (5) for placing the workpiece (a) to be detected and a collection box (6) which is detachably arranged below the mounting frame (5) and is used for collecting the leak detection liquid.

7. The leak detection device according to claim 6, characterized in that: The mounting frame (5) is also provided with a positioning member (7) for positioning the workpiece (a) to be inspected.

8. The leak detection device according to claim 7, characterized in that: The positioning member (7) is arranged on the mounting frame (5) in a position-adjustable manner.

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