A connector for pipeline connection in a helium leak detector evacuation system

Abstract

The present invention relates to the technical field of pipeline connection of the evacuation system of a helium leak detector, and discloses a connector for pipeline connection of the evacuation system of a helium leak detector, including a connector body. A first sealing ring is movably connected inside the connector body. A connecting pipeline is movably connected inside the connector body. An active sealing mechanism is arranged inside the connector body. A fixed sealing component is arranged on the outer wall of the connecting pipeline. The fixed sealing component is used to ensure the airtightness of the connection node between the connector body and the connecting pipeline. The active sealing mechanism cooperates with the fixed sealing component to seal and fix the connection node between the connector body and the connecting pipeline, and prevent leakage at the connection node between the connector body and the connecting pipeline. Fixing holes are formed inside the outer surface of the connector body. The present invention can not only prevent leakage at the connection node between the connector body and the connecting pipeline, but also ensure the airtightness of the connection node between the connector body and the connecting pipeline.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline connection of a helium leak detector evacuation system, and specifically relates to a connector for pipeline connection of a helium leak detector evacuation system. Background Art

[0002] A helium mass spectrometer leak detector is a gas industry term. It is a mass spectrometer that uses helium or hydrogen as a tracer gas and detects helium with a gas analyzer for leak detection. It has a self-diagnosis function during operation. When the helium leak detector evacuates a vacuum chamber, a pipeline connector is required when connecting the vacuum chamber.

[0003] For traditional pipeline connection connectors of a helium leak detector evacuation system, single sealing is mostly adopted, which is extremely likely to leak during long-term use, causing potential safety hazards. Moreover, multiple bolts are generally used to fixedly connect the connector and the pipeline, and workers need to tighten the bolts separately, which is a cumbersome and inconvenient process. Therefore, we propose a connector for pipeline connection of a helium leak detector evacuation system. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a connector for pipeline connection of a helium leak detector evacuation system, which has the advantages of not only preventing leakage at the connection node between the connector body and the connection pipeline, but also ensuring the airtightness of the connection node between the connector body and the connection pipeline, and solves the problem of leakage during long-term use, causing potential safety hazards.

[0006] (2) Technical Solutions

[0007] To achieve the purpose of not only preventing leakage at the connection node between the connector body and the connection pipeline, but also ensuring the airtightness of the connection node between the connector body and the connection pipeline, the present invention provides the following technical solution: A connector for pipeline connection of a helium leak detector evacuation system, including a connector body, a first sealing ring is movably connected inside the connector body, a connection pipeline is movably connected inside the connector body, and a movable sealing mechanism is arranged inside the connector body;

[0008] A fixed sealing assembly is arranged on the outer wall of the connection pipeline; the fixed sealing assembly is used to ensure the airtightness of the connection node between the connector body and the connection pipeline;

[0009] The movable sealing mechanism and the fixed sealing assembly cooperate to seal and fix the connection node between the connector body and the connection pipeline, and prevent leakage at the connection node between the connector body and the connection pipeline.

[0010] As a preferred technical solution of the present invention, a fixing hole is provided inside the outer surface of the connector body, a rotating hole is provided at the bottom wall of the inner cavity of the fixing hole, and the inner cavities of the fixing hole and the rotating hole are both movably connected to the movable sealing mechanism.

[0011] As a preferred technical solution of the present invention, threaded grooves are provided inside both ends of the connector body, the bottom wall of the threaded groove is movably connected to the first sealing ring, and the threaded groove is movably connected to the connecting pipe.

[0012] As a preferred technical solution of the present invention, the movable sealing mechanism includes a rotating and fixing component, a hinged component and a sealing component. The rotating and fixing component is movably connected to the inner cavities of the fixing hole and the rotating hole, the rotating and fixing component is fixedly connected to the hinged component, the hinged component is fixedly connected to the sealing component, and the sealing component is movably connected to the connecting pipe.

[0013] As a preferred technical solution of the present invention, the rotating and fixing component includes a rotating block. The rotating block is movably connected to the inner cavities of the fixing hole and the rotating hole, and is also movably connected to the inner cavity of the connector body. The outer surface of the rotating block is fixedly connected to the hinged component. A second sealing ring is sleeved on the outer wall of the rotating block, and the second sealing ring is movably connected to the bottom wall of the inner cavity of the fixing hole. A hexagonal fixing cap is movably connected to one end of the rotating block close to the second sealing ring, and the hexagonal fixing cap is movably connected to the inner cavity of the fixing hole.

[0014] As a preferred technical solution of the present invention, the rotating block includes a connecting rod. The connecting rod is movably connected to the inner cavities of the fixing hole and the rotating hole. One end outer wall of the connecting rod is movably connected to the hexagonal fixing cap. A cylindrical block is fixedly installed at the end of the connecting rod far from the hexagonal fixing cap. The cylindrical block is movably connected to the inner cavity of the connector body. The outer surface of the cylindrical block is fixedly connected to the hinged component.

[0015] As a preferred technical solution of the present invention, the hinged component includes a first hinge seat. The first hinge seat is fixedly connected to the cylindrical block. A hinge rod is movably connected to the inside of the first hinge seat. A first rotating shaft is movably connected to the inner cavity of the first moving hole provided inside both the first hinge seat and the hinge rod. A second hinge seat is movably connected to one side of the hinge rod far from the first hinge seat. A second rotating shaft is movably connected to the inner cavity of the second moving hole provided inside both the second hinge seat and the end of the hinge rod far from the first hinge seat. A fixing block is fixedly installed on the outer surface of the second hinge seat, and the fixing block is fixedly connected to the sealing component.

[0016] As a preferred technical solution of the present invention, the sealing assembly includes a movable cylinder, which is fixedly connected between the two ends of the fixed block and the inner cavity of the movable cylinder. A fixed ring is fixedly installed on the outer wall of the movable cylinder. A third sealing ring is sleeved on the outer wall of the movable cylinder. The third sealing ring is movably connected to the fixed ring, and the third sealing ring is located in the middle between the fixed ring and the edge of the movable cylinder. The outer surface of the third sealing ring is movably connected to the inner cavity of the connecting pipe.

[0017] As a preferred technical solution of the present invention, threads are provided inside the outer surface of the connecting pipe close to the connector body. The threads are movably connected to the fixed sealing assembly and are also movably connected to the inside of the connector body.

[0018] As a preferred technical solution of the present invention, the fixed sealing assembly includes a fourth sealing ring, which is movably connected to the inside of the connector body. The inner cavity of the fourth sealing ring is movably sleeved on the connecting pipe. An octagonal fixing cap is movably connected to the side of the fourth sealing ring away from the connector body. The octagonal fixing cap is movably connected to the connecting pipe and is also movably connected to the threads.

[0019] (III) Beneficial effects

[0020] Compared with the prior art, the present invention provides a connector for pipeline connection in a helium leak detector evacuation system, which has the following beneficial effects:

[0021] 1. For the connector for pipeline connection in the helium leak detector evacuation system, by rotating the rotating block, the rotating block rotates in the inner cavities of the fixed hole and the rotating hole and the inner cavity of the connector body at this time. The rotating block drives the first hinge seat to rotate. At this time, the hinge rod rotates inside the first hinge seat and rotates around the first rotating shaft. At the same time, the hinge rod rotates inside the second hinge seat and rotates around the second rotating shaft, and drives the fixed block and the movable cylinder to move in the inner cavity of the connecting pipe. At this time, the third sealing ring moves in the inner cavity of the connecting pipe, so as to ensure the airtightness of the connection node between the connector body and the connecting pipe, and further prevent leakage at the connection node between the connector body and the connecting pipe.

[0022] 2. For the connector for pipeline connection in the helium leak detector evacuation system, by threadedly connecting the connecting pipe to the inner cavity of the thread groove, then sleeving the fourth sealing ring on the outer surface of the connecting pipe, and then rotating the octagonal fixing cap. At this time, the octagonal fixing cap moves in a threaded manner on the threads provided inside the outer surface of the connecting pipe close to the connector body, and fastens the fourth sealing ring. The connector body and the connecting pipe are connected by a threaded connection method, so as to ensure the airtightness of the connection node between the connector body and the connecting pipe, and further facilitate the fixing of the connector body and the connecting pipe, and the operation is simple and fast. Description of the drawings

[0023] Figure 1 This is the front view three-dimensional diagram of the present invention;

[0024] Figure 2 This is the half-section three-dimensional diagram of the present invention;

[0025] Figure 3 This is the Figure 2 enlarged view of part A in the present invention;

[0026] Figure 4 This is the exploded three-dimensional diagram of the connector body and the connecting pipe of the present invention;

[0027] Figure 5 This is the three-dimensional diagram of the connection between the connector body and the movable sealing mechanism of the present invention;

[0028] Figure 6 This is the exploded three-dimensional diagram inside the connector body of the present invention;

[0029] Figure 7 This is the three-dimensional diagram of the connection between the hinge assembly and the sealing assembly of the present invention;

[0030] Figure 8 This is the three-dimensional diagram of the connection between the rotating assembly and the hinge assembly of the present invention;

[0031] Figure 9 This is the three-dimensional diagram of the connection between the connecting pipe and the fixed sealing assembly of the present invention.

[0032] In the figure: 1. Connector body; 101. Fixed hole; 102. Rotating hole; 103. Threaded groove; 2. First sealing ring; 3. Movable sealing mechanism; 301. Rotating block; 3011. Connecting rod; 3012. Cylindrical block; 302. Hexagonal fixing cap; 303. Second sealing ring; 304. First hinge seat; 305. First rotating shaft; 306. Hinge rod; 307. Second hinge seat; 308. Second rotating shaft; 309. Fixed block; 310. Movable cylinder; 311. Fixed ring; 312. Third sealing ring; 4. Connecting pipe; 401. Thread; 5. Fixed sealing assembly; 501. Fourth sealing ring; 502. Octagonal fixing cap. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] In the description of the present invention, it should be understood that terms such as "open hole", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0035] Please refer to Figures 1-9 , a connector for pipeline connection in a helium leak detector evacuation system, including a connector body 1, a first sealing ring 2 is movably connected inside the connector body 1, a connecting pipeline 4 is movably connected inside the connector body 1, and a movable sealing mechanism 3 is arranged inside the connector body 1;

[0036] A fixed sealing component 5 is arranged on the outer wall of the connecting pipeline 4; the fixed sealing component 5 is used to ensure the airtightness of the connection node between the connector body 1 and the connecting pipeline 4;

[0037] The movable sealing mechanism 3 cooperates with the fixed sealing component 5 to seal and fix the connection node between the connector body 1 and the connecting pipeline 4, and prevent leakage at the connection node between the connector body 1 and the connecting pipeline 4.

[0038] Specifically, a fixing hole 101 is opened inside the outer surface of the connector body 1, a rotating hole 102 is opened at the bottom wall of the inner cavity of the fixing hole 101, and the inner cavities of the fixing hole 101 and the rotating hole 102 are both movably connected with the movable sealing mechanism 3.

[0039] In this embodiment, a fixing hole 101 is opened inside the outer surface of the connector body 1, and a rotating hole 102 is opened at the bottom wall of the inner cavity of the fixing hole 101, so as to facilitate the rotation of the movable sealing mechanism 3 inside the connector body 1.

[0040] Specifically, threaded grooves 103 are opened inside both ends of the connector body 1, the bottom wall of the threaded groove 103 is movably connected with the first sealing ring 2, and the threaded groove 103 is movably connected with the connecting pipeline 4.

[0041] In this embodiment, threaded grooves 103 are opened inside both ends of the connector body 1, so as to facilitate the connection between the connecting pipeline 4 and the connector body 1.

[0042] Specifically, the movable sealing mechanism 3 includes a rotating and fixing component, a hinged component and a sealing component. The rotating and fixing component is movably connected with the inner cavities of the fixing hole 101 and the rotating hole 102, the rotating and fixing component is fixedly connected with the hinged component, the hinged component is fixedly connected with the sealing component, and the sealing component is movably connected with the connecting pipeline 4.

[0043] In this embodiment, the movable sealing mechanism 3 is composed of a rotating and fixing component, a hinged component, and a sealing component. The rotating and fixing component is movably connected to the inner cavities of the fixing hole 101 and the rotating hole 102, facilitating the movement of the rotating and fixing component inside the connector body 1. The moving rotating and fixing component drives the hinged component to move, and the hinged component drives the sealing component to move, thereby preventing leakage at the connection node between the connector body 1 and the connecting pipe 4.

[0044] Specifically, the rotating and fixing component includes a rotating block 301. The rotating block 301 is movably connected to both the inner cavities of the fixing hole 101 and the rotating hole 102, and is also movably connected to the inner cavity of the connector body 1. The outer surface of the rotating block 301 is fixedly connected to the hinged component. A second sealing ring 303 is sleeved on the outer wall of the rotating block 301, and the second sealing ring 303 is movably connected to the bottom wall of the inner cavity of the fixing hole 101. One end of the rotating block 301 close to the second sealing ring 303 is movably connected to a hexagonal fixing cap 302, and the hexagonal fixing cap 302 is movably connected to the inner cavity of the fixing hole 101.

[0045] In this embodiment, by rotating the rotating block 301 movably connected to the inner cavities of the fixing hole 101 and the rotating hole 102, at this time, the rotating block 301 rotates in the inner cavities of the fixing hole 101 and the rotating hole 102 and the inner cavity of the connector body 1. The rotating block 301 drives the hinged component fixed on its outer surface to operate, thus facilitating the operation of driving the hinged component.

[0046] Specifically, the rotating block 301 includes a connecting rod 3011. The connecting rod 3011 is movably connected to both the inner cavities of the fixing hole 101 and the rotating hole 102. One end outer wall of the connecting rod 3011 is movably connected to the hexagonal fixing cap 302. The end of the connecting rod 3011 far from the hexagonal fixing cap 302 is fixedly installed with a cylindrical block 3012. The cylindrical block 3012 is movably connected to the inner cavity of the connector body 1. The outer surface of the cylindrical block 3012 is fixedly connected to the hinged component.

[0047] In this embodiment, the rotating block 301 is composed of a connecting rod 3011 and a cylindrical block 3012. When the rotating block 301 rotates, the connecting rod 3011 rotates in the inner cavity of the fixing hole 101 opened on the inner surface of the outer surface of the connector body 1 and the inner cavity of the rotating hole 102 opened on the bottom wall of the inner cavity of the fixing hole 101, and the cylindrical block 3012 rotates in the inner cavity of the connector body 1, thus facilitating the rotation of the rotating block 301 inside the connector body 1.

[0048] Specifically, the hinge assembly includes a first hinge seat 304, the first hinge seat 304 is fixedly connected to the cylindrical block 3012, a hinge rod 306 is movably connected to the inner side of the first hinge seat 304, a first rotating shaft 305 is movably connected to the inner cavity of the first moving holes respectively opened in the first hinge seat 304 and the hinge rod 306, a second hinge seat 307 is movably connected to the side of the hinge rod 306 away from the first hinge seat 304, and a second rotating shaft 308 is movably connected to the inner cavity of the second moving holes respectively opened in the second hinge seat 307 and the end of the hinge rod 306 away from the first hinge seat 304. A fixing block 309 is fixedly installed on the outer surface of the second hinge seat 307, and the fixing block 309 is fixedly connected to the sealing assembly.

[0049] In this embodiment, the rotating fixing component drives the first hinge seat 304 fixed on the outer surface of the cylindrical block 3012 to rotate. At this time, the hinge rod 306 movably connected to the inner side of the first hinge seat 304 rotates inside the first hinge seat 304 and rotates around the first rotating shaft 305 movably connected to the inner cavity of the first moving hole. At the same time, the hinge rod 306 movably connected to the inner side of the second hinge seat 307 rotates inside the second hinge seat 307 and rotates around the second rotating shaft 308 movably connected to the inner cavity of the second moving hole, and drives the fixing block 309 and the sealing assembly fixed on the outer surface of the fixing block 309 to move, so as to conveniently drive the sealing assembly to move in the inner cavity of the connecting pipe 4.

[0050] Specifically, the sealing assembly includes a movable cylinder 310, the inner cavity of the movable cylinder 310 is fixedly connected to both ends of the fixing block 309, a fixing ring 311 is fixedly installed on the outer wall of the movable cylinder 310, a third sealing ring 312 is sleeved on the outer wall of the movable cylinder 310, the third sealing ring 312 is movably connected to the fixing ring 311, and the third sealing ring 312 is located in the middle between the fixing ring 311 and the edge of the movable cylinder 310. The outer surface of the third sealing ring 312 is movably connected to the inner cavity of the connecting pipe 4.

[0051] In this embodiment, the moving hinge assembly drives the movable cylinder 310 fixed at both ends of the fixing block 309 to move in the inner cavity of the connecting pipe 4. At this time, the third sealing ring 312 located in the middle between the fixing ring 311 and the edge of the movable cylinder 310 moves in the inner cavity of the connecting pipe 4, so as to ensure the sealing between the inner cavity of the connector body 1 and the connecting pipe 4 and prevent leakage.

[0052] Specifically, a thread 401 is opened inside the outer surface of the connecting pipe 4 close to the connector body 1, the thread 401 is movably connected to the fixed sealing component 5, and the thread 401 is movably connected to the inside of the connector body 1.

[0053] In this implementation scheme, a thread 401 is opened inside the outer surface of the connecting pipe 4 close to the connector body 1, and the connecting pipe 4 is movably connected with the thread grooves 103 opened inside both sides of the connector body 1, so as to facilitate the connection between the connecting pipe 4 and the connector body 1, and further facilitate the fixing of the fixed sealing component 5 on the connecting pipe 4, and the operation is simple and fast.

[0054] Specifically, the fixed sealing component 5 includes a fourth sealing ring 501, the fourth sealing ring 501 is movably connected with the inside of the connector body 1, the inner cavity of the fourth sealing ring 501 is movably sleeved with the connecting pipe 4, a octagonal fixing cap 502 is movably connected to the side of the fourth sealing ring 501 away from the connector body 1, the octagonal fixing cap 502 is movably connected with the connecting pipe 4 and is also movably connected with the thread 401.

[0055] In this implementation scheme, by sleeving the fourth sealing ring 501 on the outer surface of the connecting pipe 4 and then using the octagonal fixing cap 502 to fasten the fourth sealing ring 501, the airtightness of the connection node between the connector body 1 and the connecting pipe 4 is ensured again.

[0056] Working principle: When in use, the connecting pipe 4 is threadedly connected to the inner cavities of the thread grooves 103 opened at both ends inside the connector body 1, then the fourth sealing ring 501 is sleeved on the outer surface of the connecting pipe 4, and then the octagonal fixing cap 502 movably connected to the connecting pipe 4 is rotated. At this time, the octagonal fixing cap 502 moves in a threaded manner on the thread 401 opened inside the outer surface of the connecting pipe 4 close to the connector body 1 and fastens the fourth sealing ring 501 sleeved on the connecting pipe 4. The connector body 1 and the connecting pipe 4 are connected in a threaded manner, so as to ensure the airtightness of the connection node between the connector body 1 and the connecting pipe 4, and further facilitate the fixed connection between the connector body 1 and the connecting pipe 4, and the operation is simple and fast;

[0057] By rotating the rotating block 301 that is movably connected within the inner cavities of the fixed hole 101 and the rotating hole 102, at this time, the rotating block 301 rotates within the inner cavities of the fixed hole 101, the rotating hole 102, and the inner cavity of the connector body 1. The rotating block 301 drives the first hinge seat 304 fixed on the outer surface of the cylindrical block 3012 to rotate. At this time, the hinge rod 306 movably connected to the inside of the first hinge seat 304 rotates within the inside of the first hinge seat 304 and rotates about the first rotating shaft 305 movably connected within the inner cavity of the first moving hole. At the same time, the hinge rod 306 movably connected to the inside of the second hinge seat 307 rotates within the inside of the second hinge seat 307 and rotates about the second rotating shaft 308 movably connected within the inner cavity of the second moving hole, and drives the fixed block 309 and the movable cylinders 310 fixed at both ends on the outer surface of the fixed block 309 to move within the inner cavity of the connecting pipe 4. At this time, the third sealing ring 312 located in the middle between the fixed ring 311 and the edge of the movable cylinder 310 moves within the inner cavity of the connecting pipe 4, thereby ensuring the sealing between the inner cavity of the connector body 1 and the connecting pipe 4 and preventing leakage. This device can not only prevent leakage at the connection node between the connector body 1 and the connecting pipe 4, but also ensure the airtightness of the connection node between the connector body 1 and the connecting pipe 4.

[0058] It should be noted that in this article, terms such as "including", "comprising", or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such a process, method, article, or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article, or device including the said element.

[0059] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A connector for pipeline connection in a helium leak detector evacuation system, comprising a connector body (1). Characterized in that: A first sealing ring (2) is movably connected inside the connector body (1), a connecting pipeline (4) is movably connected inside the connector body (1), and a movable sealing mechanism (3) is arranged inside the connector body (1). A fixed sealing assembly (5) is arranged on the outer wall of the connecting pipeline (4); the fixed sealing assembly (5) is used to ensure the airtightness of the connection node between the connector body (1) and the connecting pipeline (4). The movable sealing mechanism (3) and the fixed sealing assembly (5) cooperate to seal and fix the connection node between the connector body (1) and the connecting pipeline (4), and prevent leakage at the connection node between the connector body (1) and the connecting pipeline (4). A fixing hole (101) is opened inside the outer surface of the connector body (1), a rotating hole (102) is opened at the bottom wall of the inner cavity of the fixing hole (101), and the inner cavities of the fixing hole (101) and the rotating hole (102) are both movably connected to the movable sealing mechanism (3). The movable sealing mechanism (3) includes a rotating and fixing component, a hinged component and a sealing component. The rotating and fixing component is movably connected to the inner cavities of the fixing hole (101) and the rotating hole (102), the rotating and fixing component is fixedly connected to the hinged component, the hinged component is fixedly connected to the sealing component, and the sealing component is movably connected to the connecting pipeline (4). The rotating and fixing component includes a rotating block (301). The rotating block (301) is movably connected to the inner cavities of the fixing hole (101) and the rotating hole (102), and is movably connected to the inner cavity of the connector body (1). The outer surface of the rotating block (301) is fixedly connected to the hinged component. A second sealing ring (303) is sleeved on the outer wall of the rotating block (301). The second sealing ring (303) is movably connected to the bottom wall of the inner cavity of the fixing hole (101). One end of the rotating block (301) close to the second sealing ring (303) is movably connected to a hexagonal fixing cap (302), and the hexagonal fixing cap (302) is movably connected to the inner cavity of the fixing hole (101). The rotating block (301) includes a connecting rod (3011). The connecting rod (3011) is movably connected to the inner cavities of the fixing hole (101) and the rotating hole (102). One end outer wall of the connecting rod (3011) is movably connected to the hexagonal fixing cap (302). A cylindrical block (3012) is fixedly installed at the end of the connecting rod (3011) far from the hexagonal fixing cap (302). The cylindrical block (3012) is movably connected to the inner cavity of the connector body (1). The outer surface of the cylindrical block (3012) is fixedly connected to the hinged component. The articulated assembly includes a first articulated seat (304), which is fixedly connected to the cylindrical block (3012). An articulated rod (306) is movably connected inside the first articulated seat (304). A first rotating shaft (305) is movably connected to the inner cavity of the first moving holes respectively opened inside the first articulated seat (304) and the articulated rod (306). One side of the articulated rod (306) away from the first articulated seat (304) is movably connected to a second articulated seat (307). A second rotating shaft (308) is movably connected to the inner cavity of the second moving holes respectively opened inside the second articulated seat (307) and the end of the articulated rod (306) away from the first articulated seat (304). A fixing block (309) is fixedly installed on the outer surface of the second articulated seat (307), and the fixing block (309) is fixedly connected to the sealing assembly; The sealing assembly includes a movable cylinder (310), and both ends of the inner cavity of the movable cylinder (310) are fixedly connected to the fixing block (309). A fixing ring (311) is fixedly installed on the outer wall of the movable cylinder (310). A third sealing ring (312) is sleeved on the outer wall of the movable cylinder (310). The third sealing ring (312) is movably connected to the fixing ring (311), and the third sealing ring (312) is located in the middle between the fixing ring (311) and the edge of the movable cylinder (310). The outer surface of the third sealing ring (312) is movably connected to the inner cavity of the connecting pipe (4).

2. A connector for pipeline connection in a helium leak detector evacuation system according to claim 1, characterized in that: Thread grooves (103) are respectively opened inside both ends of the connector body (1). The bottom wall of the thread groove (103) is movably connected to the first sealing ring (2), and the thread groove (103) is movably connected to the connecting pipe (4).

3. A connector for pipeline connection in a helium leak detector evacuation system according to claim 1, characterized in that: Threads (401) are opened inside the outer surface of the connecting pipe (4) close to the connector body (1). The threads (401) are movably connected to the fixed sealing assembly (5), and the threads (401) are movably connected to the inside of the connector body (1).

4. A connector for pipeline connection in a helium leak detector evacuation system according to claim 3, characterized in that: The fixed sealing assembly (5) includes a fourth sealing ring (501). The fourth sealing ring (501) is movably connected to the inside of the connector body (1). The inner cavity of the fourth sealing ring (501) is movably sleeved on the connecting pipe (4). One side of the fourth sealing ring (501) away from the connector body (1) is movably connected to an octagonal fixing cap (502). The octagonal fixing cap (502) is movably connected to the connecting pipe (4) and is also movably connected to the threads (401).

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