Scratch-preventing sealing tool for testing

Abstract

The utility model relates to the technical field of sealing testing, in particular to a scratch-preventing sealing tool for testing. A scratch-preventing sealing tool for testing comprises a testing piece, and a nylon gasket is arranged at one end of the testing piece and used for abutting against a connector. The utility model has the following effects: the arrangement of the nylon gasket reduces the loss of the metal gasket, reduces the test cost, and effectively reduces the scratches generated on the sealing surface of the joint in the test process.

Description

Technical Field

[0001] This application relates to the technical field of sealing tests, and in particular, to a sealing tool for testing that prevents scratches. Background Art

[0002] VCR connectors are high-quality valves and pipe connectors specifically designed and manufactured for high-purity and ultra-high-purity application fields, and are usually used for the connection of Tube pipes.

[0003] The sealing principle of VCR connectors is to compress the intermediate metal gasket by continuously tightening the two end nuts, so as to achieve the sealing effect. The two end nuts are respectively an external thread nut and an internal thread nut. First, the external thread nut and the internal thread nut are respectively sleeved on the connector, and then welded to the Tube pipe to be connected respectively. Among them, the metal gasket is stuck on the connector; during the tightening process, the two end nuts press on the metal gasket, resulting in corresponding deformation on the metal gasket. According to the interaction of forces, while corresponding deformation occurs on the metal gasket, corresponding indentations will also appear on the sealing contact surface of the connector.

[0004] VCR connectors need to be assembled, welded, tested and other processes in a clean room to ensure their sealing performance, cleanliness, etc. Generally, a three-way test head is used to test the VCR connector. The two opposite ends of the three-way test head are respectively connected to the external thread nut and the internal thread nut, and the other end of the three-way head is used for ventilation, so as to conduct the sealing test.

[0005] However, in the actual production process, the test will be carried out multiple times. Since the metal gasket is a disposable part, the metal gasket needs to be replaced after each test, resulting in a high test cost. Utility Model Content

[0006] In order to reduce the loss of metal gaskets and reduce the test cost, this application provides a sealing tool for testing that prevents scratches.

[0007] A sealing tool for testing that prevents scratches provided by this application adopts the following technical scheme: it includes a test piece, and a nylon gasket is arranged at one end of the test piece, and the nylon gasket is used to abut against the connector.

[0008] By adopting the above technical scheme, the setting of the nylon gasket reduces the loss of the metal gasket, reduces the test cost, and effectively reduces the scratches generated on the sealing surface of the connector during the test.

[0009] Preferably, the test piece includes a test male head and a test female head. The test male head is used to cooperate with the internal thread nut, the test female head is used to cooperate with the external thread nut, and nylon gaskets are arranged on both the test male head and the test female head.

[0010] When performing a sealing test on a VCR connector, usually only one side is tested each time. By adopting the above technical solution, if the inner-thread nut side of the VCR connector is tested, the outer-thread nut side of the VCR connector is sealed by using a test female head. Conversely, if the outer-thread nut side of the VCR connector is tested, the inner-thread nut side of the VCR connector is sealed by using a test male head.

[0011] Preferably, the test male head includes a head and a rod portion. The head and the rod portion are coaxially connected. A first thread adapted to the inner wall thread of the inner-thread nut is circumferentially provided on the rod wall of the rod portion. One of the nylon gaskets is arranged on the end face of the rod portion away from the head. An embedding groove for embedding the outer-thread nut is coaxially provided on the test female head. The other nylon gasket is arranged at the bottom of the embedding groove. A second thread adapted to the outer wall thread of the inner-thread nut is provided on the test female head. The second thread is circumferentially provided on the wall of the embedding groove.

[0012] By adopting the above technical solution, the first thread is adapted to the thread on the inner wall of the inner-thread nut, enabling the rod portion to be screwed tightly into the inner-thread nut by thread, thereby sealing the inner-thread nut side of the VCR connector; the second thread is adapted to the thread on the outer wall of the outer-thread nut, enabling the test female head to be sleeved on the outer-thread nut by thread, thereby sealing the outer-thread nut side of the VCR connector.

[0013] Preferably, one end face of one nylon gasket is adhesively connected to the end face of the rod portion away from the head, and one end face of the other nylon gasket is adhesively connected to the bottom of the embedding groove.

[0014] By adopting the above technical solution, the nylon gasket is adhered to the test male head and the test female head, making the connection relationship between the nylon gasket and the test male head and the test female head relatively stable.

[0015] Preferably, a semi-circular guiding column is provided on the test female head. The semi-circular guiding column is arranged in the embedding groove. The length direction of the semi-circular guiding column is arranged along the axial direction of the test female head. One side wall of the semi-circular guiding column is attached to the wall of the embedding groove. The semi-circular guiding column is arranged between the second thread and the bottom of the embedding groove along the axial direction of the test female head. A guiding track for the semi-circular guiding column to slide and be clamped is axially penetrated through the outer wall of the nylon gasket.

[0016] By adopting the above technical solution, the nylon gasket and the test female head are detachably connected. If problems such as aging occur during the long-term use of the nylon gasket, it is convenient to replace; the semi-circular guiding column not only provides a positioning and guiding function for the installation of the nylon gasket, but also reduces the probability of circumferential rotation between the nylon gasket and the test female head.

[0017] Preferably, a plurality of semi-circular guide posts are provided, and the plurality of semi-circular guide posts are circumferentially and evenly distributed in the embedding groove along the circumference of the test female head. The guide tracks and the semi-circular guide posts correspond one by one, and the plurality of guide tracks are circumferentially and evenly distributed on the nylon gasket.

[0018] By adopting the above technical solution, the plurality of semi-circular guide posts further reduce the probability of circumferential rotation between the nylon gasket and the test female head.

[0019] Preferably, a connecting column coaxially extends on the end face of the nylon gasket close to the test male head and arranged on the test male head. A connecting groove for embedding the connecting column is coaxially opened on the end face of the test male head close to the nylon gasket. A clamping member for fixedly embedding the connecting column in the connecting groove is arranged on the circumferential wall of the connecting column.

[0020] By adopting the above technical solution, the nylon gasket and the test male head are detachably connected, which is convenient for replacing the nylon gasket and prolongs the service life of the nylon gasket. The connecting column is embedded into the connecting groove, and the nylon gasket and the test male head are fixed through the clamping member, which is relatively convenient.

[0021] Preferably, the clamping member includes more than one clamping block. The plurality of clamping blocks are arranged on the circumferential wall of the connecting column at equal angular intervals along the circumference of the connecting column. A clamping groove for clamping the clamping block is opened on the test male head. The clamping groove is opened on the groove wall of the connecting groove, and the clamping groove and the clamping block correspond one by one.

[0022] By adopting the above technical solution, the plurality of clamping blocks are respectively clamped into the corresponding clamping grooves, improving the stability of the connection relationship between the nylon gasket and the test male head.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. The setting of the nylon gasket reduces the loss of the metal gasket, reduces the test cost, and effectively reduces the scratches generated on the joint sealing surface during the test;

[0025] 2. If the inner thread nut side of the VCR joint is tested, the test female head is used to seal the outer thread nut side of the VCR joint. On the contrary, if the outer thread nut side of the VCR joint is tested, the test male head is used to seal the inner thread nut side of the VCR joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is an exploded schematic diagram of the overall structure in Embodiment 1 of the present application;

[0027] Figure 2 is a schematic diagram of the test female head in Embodiment 1 of the present application;

[0028] Figure 3 It is an exploded view of the test male head and the nylon gasket in Embodiment 2 of the present application;

[0029] Figure 4 It is an exploded view of the test female head and the nylon gasket in Embodiment 2 of the present application;

[0030] Figure 5 It is an exploded view of the test male head and the nylon gasket from another perspective in Embodiment 2 of the present application.

[0031] Explanation of reference numerals: 11, test male head; 111, head; 112, rod portion; 113, first thread; 12, test female head; 121, groove; 122, second thread; 13, nylon gasket; 21, semi-circular guide post; 22, guide track; 23, connecting post; 24, connecting groove; 25, clamping block; 26, inserting post; 27, inner groove; 28, clamping groove. Detailed Description of the Invention

[0032] The present application will be further described in detail below with reference to the accompanying drawings.

[0033] The present application discloses a scratch-proof test sealing tool for reducing the loss of metal gaskets and reducing test costs.

[0034] Embodiment 1:

[0035] Referring to Figure 1 、 Figure 2 , a scratch-proof test sealing tool includes a test piece, the test piece includes a test male head 11 and a test female head 12, the test male head 11 is used to cooperate with an internally threaded nut, the test female head 12 is used to cooperate with an externally threaded nut, and nylon gaskets 13 are provided on both the test male head 11 and the test female head 12, and the nylon gaskets 13 are used to abut against the joints.

[0036] Specifically, the test male head 11 includes a head 111 and a rod portion 112, the head 111 and the rod portion 112 are coaxially connected, a first thread 113 adapted to the inner wall thread of the internally threaded nut is circumferentially provided on the rod wall of the rod portion 112, and one of the nylon gaskets 13 is arranged on the end face of the rod portion 112 away from the head 111. In this embodiment, the nylon gasket 13 and the rod portion 112 are adhesively connected, and the axial projection plane of the nylon gasket 13 along the rod portion 112 coincides with the axial projection plane of the rod portion 112 along the rod portion 112.

[0037] A groove 121 for embedding an external thread nut is coaxially provided on the test female head 12. Another nylon gasket 13 is arranged at the bottom of the groove 121. One end face of the other nylon gasket 13 is adhesively connected to the bottom of the groove 121. A second thread 122 adapted to the external thread on the outer wall of the internal thread nut is provided on the test female head 12. The second thread 122 is circumferentially provided on the wall of the groove 121. The connection relationship among the nylon gasket 13, the test male head 11, and the test female head 12 is relatively stable.

[0038] The implementation principle of Embodiment 1 of this application is as follows: When performing a sealing test on a VCR joint, usually only one side is tested each time. If the internal thread nut side of the VCR joint is tested, the test female head 12 is used to seal the external thread nut side of the VCR joint. Conversely, if the external thread nut side of the VCR joint is tested, the test male head 11 is used to seal the internal thread nut side of the VCR joint. The setting of the nylon gasket 13 reduces the loss of the metal gasket, reduces the test cost, and effectively reduces the scratches generated on the sealing surface of the joint during the test.

[0039] Embodiment 2:

[0040] The difference from Embodiment 1 is that with reference to Figure 3 、 Figure 4 the nylon gasket 13 is detachably connected to the test male head 11 and the test female head 12. If problems such as aging occur during the long-term use of the nylon gasket 13, it is convenient to replace, extending the service life of the test male head 11 and the test female head 12.

[0041] Specifically, semi-circular guiding columns 21 are provided on the test female head 12. The semi-circular guiding columns 21 are arranged in the groove 121. The length direction of the semi-circular guiding columns 21 is arranged along the axis of the test female head 12. One side wall of the semi-circular guiding columns 21 is attached to the wall of the groove 121. The semi-circular guiding columns 21 are arranged between the second thread 122 and the bottom of the groove 121 along the axis of the test female head 12. A plurality of semi-circular guiding columns 21 are provided, and the plurality of semi-circular guiding columns 21 are circumferentially and evenly distributed in the groove 121. In this embodiment, a total of two semi-circular guiding columns 21 are provided, and the two semi-circular guiding columns 21 are symmetrically arranged in the groove 121. A guiding track 22 for the semi-circular guiding columns 21 to slide and be stuck in is axially penetrated through the outer wall of the nylon gasket 13 along the axis of the test female head 12. The guiding track 22 corresponds to the semi-circular guiding column 21 one by one, and the two guiding tracks 22 are symmetrically opened on the circumferential wall of the nylon gasket 13. The semi-circular guiding columns 21 not only provide a positioning and guiding function for the installation of the nylon gasket 13, but also reduce the probability of circumferential rotation between the nylon gasket 13 and the test female head 12.

[0042] With reference to Figure 3 、 Figure 5, a connecting column 23 coaxially extends on an end face of a nylon gasket 13 close to one end of a test male head 11. A connecting groove 24 for embedding the connecting column 23 is coaxially formed on an end face of the test male head 11 close to the nylon gasket 13. A clamping member for fixedly embedding the connecting column 23 in the connecting groove 24 is arranged on the circumferential wall of the connecting column 23. The clamping member includes more than one clamping block 25. The plurality of clamping blocks 25 are arranged on the circumferential wall of the connecting column 23 at equal angular intervals along the circumferential direction of the connecting column 23. In this embodiment, an embedding column 26 is arranged on the test male head 11. The embedding column 26 is coaxially embedded in an embedding groove 121. An inner embedding groove 27 for embedding the embedding column 26 is formed on an end face of the connecting column 23 close to the test male head 11. A total of three clamping blocks 25 are arranged. A clamping groove 28 for clamping the clamping block 25 is formed on the test male head 11. The clamping groove 28 is formed on the groove wall of the connecting groove 24. The clamping grooves 28 and the clamping blocks 25 are in one-to-one correspondence. Three clamping grooves 28 are also formed. The clamping groove 28 is an L-shaped groove. After the clamping block 25 is axially embedded into the clamping groove 28 along the rod portion 112, the nylon gasket 13 is circumferentially rotated to complete the clamping of the nylon gasket 13.

[0043] The embodiments of the specific implementation manners are all preferred embodiments of the present application, and do not limit the protection scope of the present application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A sealing tool for testing to prevent scratches, comprising a test piece, characterized in that: A nylon gasket (13) is provided at one end of the test piece, and the nylon gasket (13) is used to abut against the joint; The test piece comprises a test male head (11) and a test female head (12); the test male head (11) is used to cooperate with an internally threaded nut, and the test female head (12) is used to cooperate with an externally threaded nut; and nylon washers (13) are provided on both the test male head (11) and the test female head (12).

2. A scratch-proof testing sealing tool according to claim 1, characterized in that: The test male head (11) comprises a head (111) and a rod (112), the head (111) and the rod (112) being coaxially connected, a first thread (113) being circumferentially formed on the rod wall of the rod (112) and matching with the inner wall thread of the internal thread nut, one of the nylon washers (13) being arranged on the end face of the rod (112) away from the head (111), a groove (121) being coaxially formed on the test female head (12) for the external thread nut to be embedded, another of the nylon washers (13) being arranged at the bottom of the groove (121), a second thread (122) being matched with the outer wall thread of the internal thread nut being formed on the test female head (12), the second thread (122) being circumferentially formed on the groove wall of the groove (121).

3. A scratch-proof testing sealing tool according to claim 2, characterized in that: One end surface of the nylon gasket (13) is adhered to and connected to an end surface of the rod portion (112) away from the head portion (111), and one end surface of another nylon gasket (13) is adhered to and connected to the bottom of the embedding groove (121).

4. A scratch-proof testing sealing tool according to claim 2, characterized in that: A semicircular guide column (21) is provided on the test female head (12), the semicircular guide column (21) is arranged in the embedding groove (121), the length direction of the semicircular guide column (21) is arranged along the axial direction of the test female head (12), one side wall of the semicircular guide column (21) is in contact with the groove wall of the embedding groove (121), the semicircular guide column (21) is arranged between the second thread (122) and the groove bottom of the embedding groove (121) along the axial direction of the test female head (12), and a guide track (22) for the semicircular guide column (21) to slide and engage is penetrated on the outer wall of the nylon gasket (13) along the axial direction of the test female head (12).

5. A scratch-proof testing sealing tool according to claim 4, characterized in that: A plurality of the semicircular guide columns (21) are provided, and the plurality of the semicircular guide columns (21) are evenly distributed in the embedding groove (121) along the circumference of the test female head (12), the guide rails (22) correspond to the semicircular guide columns (21) one by one, and the plurality of the guide rails (22) are evenly distributed on the nylon gasket (13) in the circumference.

6. A scratch-proof testing sealing tool according to claim 5, characterized in that: A connecting column (23) coaxially extends from the end surface of one end of the nylon gasket (13) disposed on the test male head (11) close to the test male head (11), and a connecting groove (24) for embedding the connecting column (23) is coaxially provided on the end surface of one end of the test male head (11) close to the nylon gasket (13), and a clamping piece is provided on the peripheral wall of the connecting column (23) so that the connecting column (23) is fixedly embedded in the connecting groove (24).

7. A scratch-proof testing sealing tool according to claim 6, characterized in that: The clamping member comprises more than one clamping block (25), and a plurality of the clamping blocks (25) are arranged on the peripheral wall of the connecting column (23) at equal angles along the circumference of the connecting column (23). The testing male head (11) is provided with a clamping groove (28) for the clamping block (25) to be clamped, and the clamping groove (28) is provided on the groove wall of the connecting groove (24), and the clamping groove (28) and the clamping block (25) correspond to each other one by one.

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