Tool for detecting leakage of conical surface part

Abstract

The utility model relates to a tool for detecting leakage of a conical surface part. Comprising a first sealing element used for sealing one of the interfaces and abutting against and being attached to the conical sealing face of the interface, a second sealing element used for sealing the rest of the interfaces and abutting against and being attached to the conical sealing face of the rest of the interfaces, and a pressurizing assembly connected with the first sealing element and communicated with the interface, and the pressurizing assembly can inflate and pressurize the interface. After the tool and the conical surface part are placed in water, when the conical sealing surface and a sealing piece are well sealed, no bubble is generated. When the sealing between the conical sealing surface and the sealing piece is poor, bubbles are generated at the leakage position. Compared with the prior art, the device has the advantages of good economical efficiency, good operability, stable and reliable quality and the like.

Description

Technical Field

[0001] This utility model relates to the field of mechanical testing technology, and in particular to a tooling for detecting leakage in conical parts. Background Technology

[0002] A conical part used in rail transit, such as Figures 1-2 As shown, it consists of one main body and four interfaces welded together. The outer surface of the interface opening is a conical sealing surface with a radius of 37° ± 0.5°. In its working state, this part is connected to the high-pressure oil line, and the connection method is a hard seal between the conical sealing surface of the interface and the high-pressure oil line, as shown. Figure 3 As shown. The customer requires that this set of components be leak-free, mainly in the welding points between the main body and the interface, and the hard seal between the interface and the flared copper tube.

[0003] Because this part is a non-standard part, there is currently no relevant leak testing equipment to perform leak testing on the entire part, which will pose a significant quality risk during subsequent use.

[0004] Therefore, there is an urgent need for a tooling that can effectively detect whether there is a potential leak in the part. Summary of the Invention

[0005] The purpose of this invention is to fill the market gap in detecting leaks in target parts, thereby providing a tooling for detecting leaks in conical parts.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] The technical solution of this utility model is to provide a tooling for detecting leakage in a conical part. The conical part includes a main body and several interfaces connected to and communicating with the main body. The outer surface of the opening of each interface is a conical sealing surface. The tooling includes a first sealing member for sealing one of the interfaces and tightly abutting against its conical sealing surface, a second sealing member for sealing the remaining interfaces and tightly abutting against their conical sealing surfaces, and a pressurizing component connected to the first sealing member and maintaining communication with the interface. The pressurizing component can pressurize the interface with air to make...

[0008] When the tooling and the conical part are placed in water, no bubbles will emerge when the conical sealing surface and the sealing element are properly sealed; when the conical sealing surface and the sealing element are not properly sealed, bubbles will emerge at the leakage point.

[0009] In some specific embodiments, the first seal is an integral semi-enclosed structure with its opening facing and abutting against the interface, and its inner sidewall abutting against and fitting the conical sealing surface of the interface.

[0010] In some specific embodiments, the second seal is an integral semi-enclosed structure with its opening facing and abutting against the interface, and its inner sidewall abutting against and fitting the conical sealing surface of the interface.

[0011] In some specific embodiments, the pressurization assembly includes an air pipe connected to the interface and a booster pump connected to the air pipe.

[0012] In some specific embodiments, the first sealing element is provided with a threaded hole for connecting the air pipe.

[0013] In some specific embodiments, the end of the air tube is provided with a connector, which is inserted into the threaded hole and threadedly connected to the first seal.

[0014] In some specific embodiments, the first seal and the second seal are metal seals.

[0015] In some specific embodiments, the first and second seals are copper seals.

[0016] In some specific embodiments, the tooling further includes fasteners for securing the first seal to the interface and the second seal to the interface.

[0017] In some specific embodiments, the fastener is a lock nut, which is used to be sleeved on the corresponding seal and drive the seal toward the interface, so that the seal and the opening of the interface and the conical sealing surface are tightly sealed and fitted.

[0018] The interface (8) is provided with an external thread, and the locking nut is provided with a threaded hole. One end of the threaded hole has an inwardly extending limiting ring at its inner edge. The threaded hole is threadedly connected to the external thread, and as the thread rotates, the limiting ring is used to press against the outer end of the sealing element, so that the sealing element is tightly sealed against the opening of the interface and the conical sealing surface.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) Good economic efficiency: The tooling structure of this utility model is simple, easy to manufacture, and the cost of the inspection tool is low.

[0021] (2) Good operability: The tooling of this utility model is simple to install. During testing, only the formation of bubbles in the water by the part and the tooling is needed to determine whether there is a leak. It can detect not only the leakage at the welded joint, but also the leakage at the conical surface, thus solving the quality risk of leakage of this part. Moreover, the technical requirements for the testing personnel are low. In actual testing, only one testing personnel is needed, and the entire testing process can be completed in just 5 minutes, which is highly efficient.

[0022] (3) Stable and reliable quality: The mechanical hard seal between the conical surface of the interface and the conical surface of the tooling seal has high simulation and effectively ensures measurement accuracy, thus having high reliability. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of a conical part.

[0024] Figure 2 This is a side sectional view of the interface.

[0025] Figure 3 This is a schematic diagram of the combined structure of the conical part and the high-pressure oil pipe.

[0026] Figure 4 This is a schematic diagram of the structure of the present invention and the conical part.

[0027] The diagram is labeled as follows:

[0028] 1 is the main body, 2 is the locking nut, 3 is the second sealing element, 4 is the first sealing element, 5 is the connector, 6 is the air pipe, 7 is the conical sealing surface, 8 is the interface, 9 is the high-pressure oil pipe, and 10 is the welding point. Detailed Implementation

[0029] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0032] In the following embodiments, unless otherwise specified, the functional components or structures are conventional components or structures used in the art to achieve the corresponding functions.

[0033] Example 1:

[0034] like Figures 1-2 As shown, a conical part for rail transit includes a main body 1 and four interfaces 8 connected to and communicating with the main body 1. The interfaces 8 are welded to the main body 1 at welding points 10. The outer surface of the opening of the interface 8 is a conical sealing surface 7 with a conicity α of 37°±0.5°.

[0035] like Figure 3 As shown, the conical part is hard-sealed with the high-pressure oil pipe 9 through the conical sealing surface 7 of the interface 8.

[0036] like Figure 4 As shown, a tooling for detecting leaks in conical parts includes a first sealing member 4 for sealing one of the interfaces 8 and abutting against its conical sealing surface 7; a second sealing member 3 for sealing the remaining interfaces 8 and abutting against their conical sealing surfaces 7; and a pressurizing assembly connected to the first sealing member 4 and maintaining communication with the interfaces 8. The pressurizing assembly is capable of pressurizing the interfaces 8 with air to...

[0037] When the tooling and the conical part are placed in water, no bubbles will emerge when the conical sealing surface 7 and the sealing element are properly sealed; when the conical sealing surface 7 and the sealing element are not properly sealed, bubbles will emerge at the leakage point.

[0038] The first sealing element 4 is an integral semi-enclosed structure, with its opening facing and abutting against the interface 8, and its inner sidewall abutting against and conforming to the conical sealing surface 7 of the interface 8. Similarly, the second sealing element 3 is also an integral semi-enclosed structure, with its opening facing and abutting against the interface 8, and its inner sidewall abutting against and conforming to the conical sealing surface 7 of the interface 8. The first sealing element 4 and the second sealing element 3 are metal sealing elements; preferably, the first sealing element 4 and the second sealing element 3 are copper sealing elements.

[0039] The pressurization assembly includes an air pipe 6 connected to the interface 8 and a booster pump connected to the air pipe 6. The end of the air pipe 6 is provided with a connector 5, which is also inserted into a threaded hole provided on the first sealing member 4 and threadedly connected to the first sealing member 4, so that the gas in the air pipe 6 can be sent into the conical part.

[0040] The tooling also includes fasteners 2 for securing the first seal 4 to the interface 8 and the second seal 3 to the interface 8. Preferably, the fastener 2 is a locking nut, which is used to fit onto the corresponding seal and drive the seal toward the interface 8, so that the seal abuts against the opening of the interface 8 and the conical sealing surface 7. The interface 8 is provided with external threads, and the locking nut has a through threaded hole. One end of the threaded hole has an inwardly extending limiting ring at its inner edge. The threaded hole is threadedly connected to the external threads, and as the threads rotate, the limiting ring presses against the outer end of the seal, so that the seal abuts against the opening of the interface 8 and the conical sealing surface 7.

[0041] The workpiece of the utility model achieves the detection of the sealing condition of the conical sealing surface 7 by means of the hard seal between the conical sealing surface 7 of the interface 8 and the sealing member, simulating the actual working conditions, and can also detect the sealing condition of the welding joint between the main body 1 and the interface 8. During operation, after passing a gas pressure of 0.6 MPa into the conical surface part through the air pipe 6, the part and the tooling are placed in a water tank for pressure holding for 1 minute, and the situation of the part and the tooling in the water is observed. If there are leakage points at the welding point 10 and the conical sealing part, bubbles will emerge at the leakage points. If no bubbles emerge from the part and the tooling within 1 minute, the test result is qualified.

[0042] The above description of the embodiments is to facilitate the understanding and use of the utility model by those of ordinary skill in the art. Obviously, those who are familiar with the technology in this field can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative efforts. Therefore, the present utility model is not limited to the above embodiments, and the improvements and modifications made by those skilled in the art without departing from the scope of the present utility model according to the disclosure of the present utility model should be within the protection scope of the present utility model.

Claims

1. A tooling for detecting leakage in a conical part, the conical part comprising a main body (1) and a plurality of interfaces (8) connected to and communicating with the main body (1), wherein the outer surface of the opening of each interface (8) is a conical sealing surface (7), characterized in that, The fixture includes a first seal (4) for sealing one of the interfaces (8) and abutting against its conical sealing surface (7), a second seal (3) for sealing the remaining interfaces (8) and abutting against its conical sealing surface (7), and a pressurizing assembly connected to the first seal (4) and maintaining communication with the interfaces (8), the pressurizing assembly being capable of pressurizing the interfaces (8) to allow air to be supplied. When the tooling and the conical part are placed in water, no bubbles will emerge when the conical sealing surface (7) and the seal are properly sealed; when the conical sealing surface (7) and the seal are not properly sealed, bubbles will emerge at the leakage point.

2. The tooling for detecting leakage in conical parts according to claim 1, characterized in that, The first sealing element (4) is an integral semi-enclosed structure with its opening facing and abutting against the interface (8), and its inner sidewall abutting against and fitting the conical sealing surface (7) of the interface (8).

3. The tooling for detecting leakage in conical parts according to claim 1, characterized in that, The second sealing element (3) is an integral semi-enclosed structure with its opening facing and abutting against the interface (8), and its inner sidewall abutting against and fitting the conical sealing surface (7) of the interface (8).

4. The tooling for detecting leakage in conical parts according to claim 1, characterized in that, The booster assembly includes an air pipe (6) connected to the interface (8) and a booster pump connected to the air pipe (6).

5. The tooling for detecting leakage in conical parts according to claim 4, characterized in that, The first sealing element (4) is provided with a threaded hole (9) for connecting the air pipe (6).

6. The tooling for detecting leakage in conical parts according to claim 5, characterized in that, The end of the air pipe (6) is provided with a connector (5), which is inserted into the threaded hole and threadedly connected to the first seal (4).

7. The tooling for detecting leakage in conical parts according to claim 1, characterized in that, The first seal (4) and the second seal (3) are metal seals.

8. The tooling for detecting leakage in conical parts according to claim 1, characterized in that, The first seal (4) and the second seal (3) are copper seals.

9. The tooling for detecting leakage in conical parts according to claim 1, characterized in that, The tooling also includes fasteners (2) for fastening the first seal (4) to the interface (8) and the second seal (3) to the interface (8).

10. The tooling for detecting leakage in conical parts according to claim 9, characterized in that, The fastener (2) is a locking nut, which is used to be sleeved on the corresponding seal and drive the seal toward the interface (8), so that the seal and the opening of the interface (8) and the conical sealing surface (7) are tightly sealed and fitted. The interface (8) is provided with an external thread, and the locking nut is provided with a threaded hole. One end of the threaded hole has an inwardly extending limiting ring at its inner edge. The threaded hole is threadedly connected to the external thread, and as the thread rotates, the limiting ring presses against the outer end of the sealing element, so that the sealing element is tightly sealed against the opening of the interface (8) and the conical sealing surface (7).

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