connector

Abstract

The present application provides a joint, comprising an upper joint portion, a lower joint portion, an inlet channel, and a channel sealing device. The upper joint portion has a cavity, and the upper joint portion and the lower joint portion can rotate and fit together. The inlet channel is arranged between the upper joint portion and the lower joint portion, and the cavity is connected to the inlet channel. The channel sealing device can close and open the inlet channel through the relative rotation of the upper joint portion and the lower joint portion, thereby closing or opening the joint. The joint can conveniently control the on-off of the pipeline, is easy to match with instruments or sensors of various specifications, is not prone to leakage, and is suitable for use in pipelines circulating refrigerant.

Description

Technical Field

[0001] The present application relates to a connector, and in particular to a connector capable of controlling the on / off of a pipeline. Background Art

[0002] The various pressure instruments and sensors used extensively in industrial pressure vessels and pipelines generally require regular inspection and recalibration, and they must also be removed and replaced if a malfunction occurs. This requires the ability to disconnect the pipes connecting the instruments and sensors and ensure a tight seal when removing the instruments. Therefore, a device is needed to conveniently control the on / off status of the pipes. Summary of the Invention

[0003] To solve the above problems, the present application provides a joint, wherein the joint comprises:

[0004] A joint upper portion and a joint lower portion, wherein the joint upper portion has a cavity therein and the joint upper portion and the joint lower portion are capable of rotatably fitting together;

[0005] an inlet channel, the inlet channel being arranged between the upper portion of the joint and the lower portion of the joint, the cavity being in communication with the inlet channel;

[0006] Channel sealing device;

[0007] By the relative rotational cooperation between the joint upper part and the joint lower part, the channel sealing device can close or open the inlet channel, thereby closing or opening the joint.

[0008] In the joint as described above, the upper part and the lower part of the joint can move relative to each other by rotating the upper part of the joint.

[0009] The joint as described above further comprises a joint sealing device, which is arranged on the outside of the joint upper portion and can be in contact with the joint lower portion, so that the joint upper portion and the joint lower portion can be sealed.

[0010] In the connector as described above, the cavity forms a detection channel for communicating with a detection device.

[0011] In the joint as described above, the channel sealing device is a sealing ring, a channel sealing device mounting groove is provided on the upper portion of the joint, and the sealing ring is arranged in the channel sealing device mounting groove.

[0012] As described above, the upper portion of the connector has a head and a body, the head is used to connect the detection device, the lower portion of the connector has a cavity, and the body can be inserted into the cavity of the lower portion of the connector.

[0013] As described above, the outer side of the body and the inner side of the cavity are respectively provided with threads that can cooperate with each other, so that when the upper part of the joint and the lower part of the joint rotate relative to each other, the upper part of the joint can move relative to the lower part of the joint along the axial direction of the joint, thereby approaching or moving away from the lower part of the joint.

[0014] In the joint as described above, when the upper part of the joint moves relative to the lower part of the joint, the upper part of the joint drives the channel sealing device to move, thereby closing or opening the inlet channel.

[0015] As for the joint as described above, the lower portion of the joint has a limiting step, and when the channel sealing device abuts against the limiting step, the inlet channel is closed.

[0016] As described above, the joint upper portion includes a movable component, and the channel sealing device is provided on the movable component. When the joint upper portion rotates relative to the joint lower portion, the movable component can drive the channel sealing device to close or open the inlet channel.

[0017] In the joint as described above, the shape of the outer side of the movable part matches the lower part of the joint, so that when the upper part of the joint rotates relative to the lower part of the joint, the movable part moves relative to the lower part of the joint along the axial direction of the joint.

[0018] The connector provided by the present application has a simple structure and low cost. The connector can conveniently control the on-off of the pipeline, is easy to match with instruments or sensors of various specifications, is not prone to leakage, and is suitable for use in tested equipment that circulates refrigerants. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1A A perspective view of a first embodiment of a connector according to the present application;

[0020] Figure 1B for Figure 1A Exploded perspective view of the joint in FIG;

[0021] Figure 1C yes Figure 1A A schematic diagram of an axial section of the upper part of the middle joint;

[0022] Figure 1D yes Figure 1A A schematic diagram of the axial section of the lower part of the middle joint;

[0023] Figure 2A yes Figure 1A A schematic diagram of an axial cross section of the joint in the open state;

[0024] Figure 2B yes Figure 1AA schematic diagram of an axial cross-section of the connector in a disconnected state;

[0025] Figure 3A A perspective view of a second embodiment of a connector according to the present application;

[0026] Figure 3B for Figure 3A Exploded perspective view of the joint in FIG;

[0027] Figure 3C yes Figure 3A A schematic diagram of an axial cross-section of the upper body of the middle joint;

[0028] Figure 3D yes Figure 3A Axial cross-sectional diagram of the movable parts;

[0029] Figure 3E yes Figure 3A A schematic diagram of the axial section of the lower part of the middle joint;

[0030] Figure 4A yes Figure 3A A schematic diagram of an axial cross section of the joint in the open state;

[0031] Figure 4B yes Figure 3A A schematic diagram of an axial cross-section of the connector in a disconnected state;

[0032] Figure 5A A perspective view of a third embodiment of the connector of the present application;

[0033] Figure 5B for Figure 5A Exploded perspective view of the joint in FIG;

[0034] Figure 5C is Figure 5A A schematic diagram of an axial section of the upper part of the middle joint;

[0035] Figure 5D is Figure 5A Axial cross-sectional diagram of the movable parts;

[0036] Figure 5E is Figure 5A A schematic diagram of the axial section of the lower part of the middle joint;

[0037] Figure 6A yes Figure 5A A schematic diagram of an axial cross section of the joint in the open state;

[0038] Figure 6B yes Figure 5A A schematic diagram of an axial cross-section of the connector in a disconnected state;

[0039] Figure 7A A perspective view of a fourth embodiment of the connector of the present application;

[0040] Figure 7B for Figure 7A Exploded perspective view of the joint in FIG;

[0041] Figure 7C yes Figure 7A A schematic diagram of an axial section of the upper part of the middle joint;

[0042] Figure 7D yes Figure 7A A schematic diagram of the axial section of the lower part of the middle joint;

[0043] Figure 8A yes Figure 7A A schematic diagram of an axial cross section of the joint in the open state;

[0044] Figure 8B yes Figure 7A A schematic diagram of an axial cross-section of the connector in a disconnected state;

[0045] Figure 9A A perspective view of a fifth embodiment of the connector of the present application;

[0046] Figure 9B for Figure 9A Exploded perspective view of the joint in FIG;

[0047] FIG9C is Figure 9A A schematic diagram of an axial section of the upper part of the middle joint;

[0048] FIG9D is Figure 9A A schematic diagram of the axial section of the lower part of the middle joint;

[0049] Figure 10A yes Figure 9A A schematic diagram of an axial cross section of the joint in the open state;

[0050] Figure 10B yes Figure 9A A schematic diagram of an axial cross-section of the connector in a disconnected state;

[0051] Figure 11A A perspective view of a sixth embodiment of the connector of the present application;

[0052] Figure 11B for Figure 11A Exploded perspective view of the joint in FIG;

[0053] Figure 11C yes Figure 11A A schematic diagram of an axial section of the upper part of the middle joint;

[0054] Figure 11D yes Figure 11A A schematic diagram of an axial cross-section of the lower body of the middle joint;

[0055] Figure 11E yes Figure 11A a schematic cross-sectional view of the intermediate elastic device;

[0056] Figure 12A yes Figure 11A A schematic diagram of an axial cross section of the joint in the open state;

[0057] Figure 12B yes Figure 11A A schematic diagram of an axial cross-section of the connector in a disconnected state;

[0058] Figure 13A is a perspective view of a seventh embodiment of the connector of the present application;

[0059] Figure 13B for Figure 13A Exploded perspective view of the joint in FIG;

[0060] Figure 13C yes Figure 13A A schematic diagram of an axial cross-section of the upper body of the middle joint;

[0061] Figure 13D yes Figure 13A Schematic cross-section of the elastic device

[0062] Figure 13E yes Figure 13A A schematic diagram of the axial section of the lower part of the middle joint;

[0063] Figure 14A yes Figure 13A A schematic diagram of an axial cross section of the joint in the open state;

[0064] Figure 14B yes Figure 13A Schematic diagram of the axial section of the connector when it is in the disconnected state. DETAILED DESCRIPTION

[0065] Various specific embodiments of the present application will be described below with reference to the accompanying drawings, which form a part of this specification. It should be understood that although directional terms such as "front," "rear," "upper," "lower," "left," and "right" are used in this application to describe various example structural parts and elements of the present application, these terms are used herein for convenience of description only and are determined based on the example orientations shown in the accompanying drawings. Because the embodiments disclosed in this application can be arranged in different orientations, these directional terms are intended to be illustrative only and should not be construed as limiting.

[0066] Figure 1A This is a perspective view of the first embodiment of the connector of the present application. Figure 1B for Figure 1A Exploded view of the connector in Figure 1C and Figure 1D These are axial cross-sectional views of the upper and lower parts of the joint, respectively, used to illustrate the structure of the joint.

[0067] like Figure 1A and Figure 1B As shown, the connector 100 includes a connector upper portion 101 and a connector lower portion 102, wherein the connector upper portion 101 is partially inserted into the connector lower portion 102, and the connector upper portion 101 can rotate relative to the connector lower portion 102. The connector 100 can be opened or closed by the relative rotation between the connector upper portion 101 and the connector lower portion 102. The connector lower portion 102 is used to connect to the device to be tested, and the connector upper portion 101 is used to connect to the detection device, so that by controlling the opening and closing of the connector 100, the connection and disconnection between the fluid in the device to be tested and the detection device can be controlled. The detection device can be an instrument or a sensor, etc., and the device to be tested can be a pipeline or a container. The connector 100 also includes a channel sealing device 111 and a connector sealing device 151.

[0068] like Figure 1B and 1C As shown, the upper part 101 of the connector includes a head 121 and a body 122. The outer diameter of the head 121 is larger than the outer diameter of the body 122, and the body 122 can be inserted into the lower part 102 of the connector, while the head 121 is blocked by the lower part 102 of the connector and cannot be further inserted into the lower part 102 of the connector. The head 121 includes a section that is configured in a prism shape, such as a hexagonal prism shape, for cooperating with a tool so that the upper part 101 of the connector can be screwed by the tool. The upper part 101 of the connector has a cavity 109 and a detection device mounting cavity 119. The detection device mounting cavity 119 is used to install a detection device. The cavity 109 is connected to the detection device mounting cavity 119, and the cavity 109 can be connected to the fluid in the device under test to form a detection channel. Thereby, the detection device can be connected to the fluid in the device under test, and then detect the parameters of the fluid in the device under test. The detection device mounting cavity 119 is formed inwardly from the top surface of the connector upper portion 101, and the inner wall of the detection device mounting cavity 119 is provided with internal threads for mating with the external threads of the detection device, thereby mounting the detection device in the connector upper portion 101. The detection device mounting cavity 119 can be adaptively configured according to the structure of the detection device, so that the connector 100 can adapt to different types of detection devices.

[0069] The body 122 includes an upper section 131 and a lower section 132, with the upper section 131 connected to the head 121. The outer wall of the upper section 131 is provided with an external thread, forming a threaded section 135, which mates with the internal thread in the lower connector portion 102. Above the threaded section 135, a groove 138 is provided, tapering inward from the outer wall. Groove 138 is designed to accommodate a connector seal 151. This ring, made of an elastic material, fits over the outer side of the body 122 and is partially accommodated in groove 138. The lower section 132 includes a first section 117 and a second section 113. The first section 117 is connected to the threaded section 135. A hole 171 is provided in the sidewall of the first section 117, which communicates with the cavity 109, allowing fluid in the device under test to flow through hole 171 into the cavity 109. The second section 113 includes a support block 114, which is sleeved on the bottom of the second section 113. The support block 114 has a plurality of recesses 142 formed inwardly from the outer side thereof, and the recesses 142 are used to allow the fluid in the device under test to flow through.

[0070] The second section 113 also includes a channel sealing device mounting groove 115 for mounting the channel sealing device 111. The channel sealing device mounting groove 115 is disposed above the support block 114 and at the connection between the second section 113 and the first section 117. In other words, the bottom of the channel sealing device mounting groove 115 is formed by the outer diameter of the second section 113 being narrowed inward, while the two side walls of the channel sealing device mounting groove 115 are respectively formed by the bottom surface of the first section 117 and the top surface of the support block 114. The channel sealing device 111 is a sealing ring made of an elastic material that can be fitted into the channel sealing device mounting groove 115 of the second section 113. The outer diameter of the channel sealing device 111 is no greater than the maximum outer diameter of the support block 114, so that the channel sealing device 111 can be blocked by the support block 114 and cannot fall off downward. Moreover, the outer diameter of the channel sealing device 111 is larger than the outer diameter of the first section 117, so that at least a portion of the upper outer surface of the channel sealing device 111 is not accommodated in the channel sealing device mounting groove 115, thereby enabling the elastic channel sealing device 111 to be squeezed by the lower part 102 of the joint to form a sealing structure.

[0071] like Figure 1B and 1DAs shown, the lower portion 102 of the connector includes a top 125 and a bottom 126. The bottom 126 can be connected to the device under test. For example, an external thread is provided on the outside of the bottom 126 for cooperating with the internal thread in the device under test to connect the connector 100 to the device under test. The top 125 includes a section that is configured in a prismatic shape, such as a hexagonal prism, to facilitate cooperation with a tool so that the lower portion 102 of the connector can be screwed by the tool. The lower portion 102 of the connector has a cavity 141 that passes through the lower portion 102 of the connector in the axial direction. The cavity 141 can accommodate the upper portion 101 of the connector and is connected to the fluid in the device under test. When the upper portion 101 of the connector is inserted into the lower portion 102 of the connector, the body 122 is located in the cavity 141, and the head 121 can be blocked by the top 125, so that the upper portion 101 of the connector cannot be further inserted into the interior of the lower portion 102 of the connector.

[0072] The cavity 141 has a front section 161 and a rear section 162. The inner wall of the front section 161 includes a smooth section 165 and a threaded section 166. The smooth section 165 is positioned above the threaded section 166. The threaded section 166 cooperates with the body threaded section 135 of the body 122, enabling the upper joint 101 and the lower joint 102 to rotate relative to each other through threaded engagement, thereby enabling relative movement along the axial direction of the joint 100. The smooth section 165 is configured to cooperate with the joint sealing device 151. The joint sealing device 151 contacts the smooth section 165 to form a seal. This prevents fluid from leaking through the gap between the upper and lower joints 101, 102, during relative rotation.

[0073] The rear section 162 of the cavity can form an entrance passage 280 with the lower section 132 of the body (see Figure 2A and Figure 2B ), the inlet passage 280 can be opened and closed by the relative movement of the joint upper portion 101 and the joint lower portion 102. Specifically, the cavity rear section 162 includes a first section 167 and a second section 168. The second section 168 is used to accommodate the support block 114, allowing the support block 114 to move up and down within the second section 168. At the junction of the first section 167 and the second section 168, the inner diameter of the first section 167 is smaller than the inner diameter of the second section 168, forming a stop step 175. The stop step 175 is used to cooperate with the passage sealing device 111.

[0074] Figure 2A and Figure 2B are cross-sectional schematic diagrams of the connector 100 in the open and closed states, respectively. Figure 2A FIG shows the open state of the connector 100. Figure 2AAs shown, an inlet channel 280 is formed between the rear section 162 of the cavity of the lower connector portion 102 and the lower section 132 of the body of the upper connector portion 101. When the connector 100 is in the open state, the channel sealing device 111 does not contact the stop step 175 of the lower connector portion 102, but rather has a gap between the stop step 175 and the lower connector portion 102, thereby opening the inlet channel 280. When the inlet channel 280 of the connector 100 is open, fluid flows from the device under test along the direction indicated by arrow 285 through the space between the recess 142 of the support block 114 and the sidewall of the rear section 162 of the cavity of the lower connector portion 102, then into the space between the channel sealing device 111 and the sidewall of the rear section 162 of the cavity, then through the space between the channel sealing device 111 and the stop step 175, and finally through the hole 171 in the body 122 of the upper connector portion 101 into the cavity 109, thereby allowing the fluid to communicate with the detection device connected to the upper connector portion 101.

[0075] Figure 2B The figure shows the closed state of the connector 100. When the connector 100 needs to be closed, the connector upper part 101 is rotated relative to the connector lower part 102, and the threads between the connector upper part 101 and the connector lower part 102 are engaged, so that the connector upper part 101 is away from the connector lower part 102 until it reaches the farthest position relative to the connector lower part 102, i.e. Figure 2B At this point, the channel sealing device 111 is driven upward by the joint upper portion 101 until it abuts against the stop step 175 of the joint lower portion 102. The channel sealing device 111 is squeezed by the stop step 175 and slightly deformed, thereby forming a sealing structure with the stop step 175 of the joint lower portion 102. The inlet channel 180 is closed, preventing fluid from entering the cavity 109, and thus closing the joint 100.

[0076] The connector 100 can be moved closer to or further away from the connector lower portion 102 by rotating the threads between the connector upper portion 101 and the connector lower portion 102. Figure 1A The open state shown and Figure 1B When the upper portion 101 of the connector 100 rotates relative to the lower portion 102, the connector sealing device 151 is always in contact with the smooth section 165 of the lower portion 102. The connector sealing device 151 is squeezed by the smooth section 165 and slightly deformed to form a seal, preventing fluid from flowing out of the gap between the threads to the outside of the connector 100.

[0077] The connector 100 is used to open and close the device under test when the detection device is disassembled. The upper portion 101 of the connector can be provided with an appropriate connection structure according to the detection device to be connected, and the lower portion 102 of the connector can be provided with a corresponding connection structure according to the device under test to be connected. The connector 100 has a compact and simple structure and can adapt to smaller spaces. Due to the sealing effect of the connector sealing device 151, leakage is unlikely to occur when the connector 100 is opened and closed, thereby preventing the fluid from entering the external environment. When the fluid in the device under test is a refrigerant, the frosting phenomenon caused by the heat exchange between the refrigerant leakage and the external environment can be improved to a certain extent.

[0078] FIG3 is a second embodiment of the connector of the present invention. Figure 1A and 1B The connector 100 shown in the figure is similar to the connector 100 shown in the figure, except that when the connector upper part 301 of the connector 300 rotates relative to the connector lower part 302 to open or close the connector 300, the main part of the connector upper part 301 no longer moves up and down relative to the connector lower part 302, but the connector 300 is opened or closed by the up and down movement of the movable part 310.

[0079] Figure 3A and Figure 3B They are respectively a three-dimensional diagram and an exploded schematic diagram of the connector 300. Figure 3A and Figure 3B As shown, the joint 300 includes a joint upper portion 301 and a joint lower portion 302, wherein the joint upper portion 301 includes a joint upper body 318 and a movable component 310, which can be sleeved on the joint upper body 318. The joint upper body 318 is partially inserted into the joint lower portion 302, and the joint upper body 318 can rotate relative to the joint lower portion 302. Through the relative rotation between the joint upper body 318 and the joint lower portion 302, the movable component 310 moves up and down relative to the joint lower portion 302, thereby enabling the joint 300 to be opened or closed. The joint lower portion 302 is used to connect to the device under test, and the joint upper body 318 is used to connect to the detection device, so that by controlling the opening and closing of the joint 300, the fluid in the device under test and the detection device can be controlled. The detection device can be an instrument or a sensor, etc. The joint 300 also includes a channel sealing device 311 and a joint sealing device 351.

[0080] Figure 3C is a schematic axial cross-sectional view of the upper body 318 of the joint, as shown in Figure 3B and 3CAs shown, the upper body 318 of the connector includes a head 321 and a body 322, wherein the outer diameter of the head 321 is larger than the outer diameter of the body 322, and the body 322 can be inserted into the lower part 302 of the connector, while the head 321 is blocked by the lower part 302 of the connector and cannot be further inserted into the lower part 302 of the connector. The head 321 includes a section configured in a prismatic shape, such as a hexagonal prism, for cooperating with a tool so as to facilitate screwing the upper body 318 of the connector by the tool. The upper body 318 of the connector has a cavity 309 and a detection device mounting cavity 319 therein, and the detection device mounting cavity 319 is used to install a detection device. The cavity 309 is connected to the detection device mounting cavity 319, and the cavity 309 can be connected to the fluid in the device under test to form a detection channel, so that the detection device can be connected to the fluid in the device under test, and then detect the parameters of the fluid in the device under test. The detection device mounting cavity 319 is recessed inward from the top surface of the connector upper body 318. The inner wall of the detection device mounting cavity 319 is provided with internal threads for mating with the external threads of the detection device, thereby mounting the detection device in the connector upper body 318. The detection device mounting cavity 319 can be adaptively configured according to the structure of the detection device, allowing the connector 300 to accommodate different types of detection devices.

[0081] The outer wall of the body 322 is provided with at least one external thread, forming a body threaded section 335 for mating with the movable component 310. The sidewall of the body threaded section 335 is provided with a plurality of holes 371, allowing fluid to enter the cavity 309 through the holes 371. A groove 338 is formed above the body threaded section 335, narrowing inward from the outside. Groove 338 is used to accommodate the joint sealing device 351. The joint sealing device 351 is a sealing ring made of elastic material that can be fitted over the outer side of the body 322 and partially accommodated in the groove 338. The ends of the body threaded section 335 are respectively provided with stoppers 373 and 374 formed by enlarging the outer diameter. The stopper 373 is used to prevent the upper connector body 318 from being dislodged from above the lower connector body 302. The stopper 374 is used to limit the downward movement distance of the movable component 310, preventing the movable component 310 from falling out of the upper connector body 318. The limiting parts 373 and 374 are configured to be detachable, which facilitates the installation of the joint upper body 318 and the movable component 310.

[0082] Figure 3D is a schematic axial cross-sectional view of the movable component 310, as shown in FIG. Figure 3B and 3DAs shown, the movable part 310 has a through hole 313, and the inner wall of the hole 313 is provided with an internal thread for cooperating with the external thread of the body thread section 335, so that when the movable part 310 is sleeved on the upper body 318 of the joint, the movable part 310 can rotate relative to the upper body 318 of the joint and move up and down relative to the upper body 318 of the joint. The movable part 310 is provided with a channel sealing device mounting groove 315 formed by being recessed inward from the top surface, for mounting the channel sealing device 311. The channel sealing device 311 is a sealing ring made of elastic material. When the channel sealing device 311 is installed in the channel sealing device mounting groove 315, the height of the channel sealing device 311 is higher than the height of the top surface of the movable part. The movable part 310 is in the shape of a hexagonal prism and is used to cooperate with the lower part 302 of the joint to limit the rotation of the movable part 310 relative to the lower part 302 of the joint. Of course, the outer side of the movable part 310 can also be set to other shapes, as long as it can cooperate with the lower part 302 of the joint and limit the rotation of the movable part 310 relative to the lower part 302 of the joint.

[0083] like Figure 3B and 3E As shown, the lower portion 302 of the connector includes a top 325 and a bottom 326, and the bottom 326 can be connected to the device under test. For example, an external thread is provided on the outside of the bottom 326 for cooperating with the internal thread in the device under test to connect the connector 300 to the device under test. The top 325 includes a section that is configured in a prismatic shape, such as a hexagonal prism, which is convenient for cooperating with a tool so as to be screwed by the tool. The lower portion 302 of the connector has a cavity 341 that runs through it in the axial direction, and the cavity 341 can accommodate the upper body 318 of the connector and can be connected to the fluid in the device under test. When the upper body 318 of the connector is inserted into the lower portion 302 of the connector, the body 322 is located in the cavity 341, and the head 321 can be blocked by the top 325, so that the upper body 318 of the connector cannot continue to be inserted into the interior of the lower portion 302 of the connector.

[0084] The cavity 341 comprises a front section 361 and a rear section 362. At the junction of the front section 361 and the rear section 362, the inner diameter of the front section 361 is smaller than that of the second section 362, forming a first stop 364. This stop prevents the upper connector body 318 from falling off from above the lower connector body 302. The rear section 362 comprises a first section 367 and a second section 368. At the junction of the first section 367 and the second section 368, the inner diameter of the first section 367 is smaller than that of the second section 368, forming a second stop 375. This stop 375 is configured to cooperate with the channel sealing device 311. The second section 368 is configured to accommodate the movable component 310, allowing the movable component 310 to move up and down within the second section 368. The shape of the second section 368 is configured to match the outer shape of the movable component 310. Thus, when the movable component 310 is accommodated in the second section 368, the movable component 310 cannot rotate relative to the joint lower portion 302. In the first embodiment of the present application, the rear section 368 of the cavity is a hexagonal prism. Of course, the second section 368 can also have other shapes, as long as it matches the outer shape of the movable component 310 and prevents the movable component 310 from rotating relative to the joint lower portion 302.

[0085] Figure 4A and Figure 4B are cross-sectional schematic diagrams of the connector 300 in the open and closed states, respectively. Figure 4A FIG3 shows the open state of the connector 300. In this embodiment, the connector upper body 318 and the connector lower part 302 are always in the closest position, and the movable part 310 moves up and down relative to the connector lower part 302. Figure 4A As shown, the rear section 362 of the cavity of the lower connector portion 302 and the upper connector portion 301 form an inlet channel 480. When the connector 300 is in the open state, the inlet channel 480 is open, and a gap is formed between the channel sealing device 311 and the second stop step 375. Fluid flows from the device under test in the direction indicated by arrow 485 through the space between the side wall of the movable component 310 and the wall of the rear section 362 of the cavity of the lower connector portion 302, passes through the space between the channel sealing device 311 and the second stop step 375, and then enters the cavity 309 through the hole 371 of the upper connector body 318, allowing the fluid to communicate with the detection device connected to the upper connector body 318.

[0086] Figure 4BThe connector 300 is shown in a closed state. When the connector 300 needs to be closed, the upper connector body 318 rotates relative to the lower connector 302. At this time, the hexagonal movable part 310 mounted on the upper connector body 318 is restricted by the hexagonal rear section 368 of the lower connector 302 and cannot rotate relative to the lower connector 302. Since the rotation of the movable part 310 is restricted, when the upper connector body 318 rotates, the movable part 310, which is threadedly engaged with the upper connector body 318, moves upward relative to the lower connector 302 until it is closed. Figure 4B At this point, the channel sealing device 311 is driven by the movable component 310 to move along the axial direction of the joint 300 until it abuts against the second limiting step 375. The channel sealing device 311 is squeezed by the second limiting step 375 and slightly deformed, thereby forming a sealing structure with the second limiting step 375. The inlet channel 480 is closed, preventing fluid from entering the cavity 309, and the joint 300 is closed.

[0087] The joint 200 rotates between the joint upper portion 101 and the joint lower portion 102 to move the movable part 310 closer to or farther from the joint lower portion 102, thereby being able to Figure 3A The open state shown and Figure 3B When the joint upper portion 301 of the joint 300 rotates relative to the joint lower portion 302, the joint sealing device 351 is always in contact with the front section 361 of the cavity of the joint lower portion 302, forming a seal so that the fluid cannot flow out of the gap between the threads to the outside of the joint 300.

[0088] The connector 300 has the same advantages as the connector 100 , and compared with the connector 100 , the connector 300 is more compact and more suitable for adapting to a narrow installation space.

[0089] FIG5 is a third embodiment of the present application, which provides another connector 500. The connector 500 is connected to Figure 3A and 3B The connector 300 shown in FIG. 5 is similar to FIG. 5 , except that the movable member 510 is partially inserted into the interior of the connector upper body 518 .

[0090] Figure 5A and Figure 5B They are respectively a stereogram and a stereogram exploded diagram of the connector 500, as shown in FIG. Figure 5A and Figure 5BAs shown, the joint 500 includes a joint upper portion 501 and a joint lower portion 502, wherein the joint upper portion 501 includes a joint upper body 518 and a movable component 510. The movable component 510 can be partially screwed into the interior of the joint upper body 518. The joint upper body 518 is partially inserted into the joint lower portion 502, and the joint upper body 518 can rotate relative to the joint lower portion 502. Through the relative rotation between the joint upper body 518 and the joint lower portion 502, the movable component 510 moves up and down relative to the joint lower portion 502, thereby enabling the joint 500 to be opened or closed. The joint lower portion 502 is used to connect to the device under test, and the joint upper body 518 is used to connect to the detection device, so that by controlling the opening and closing of the joint 500, the fluid in the device under test and the detection device can be controlled. The detection device can be an instrument or a sensor, etc. The joint 500 also includes a channel sealing device 511 and a joint sealing device 551.

[0091] FIG5C is a schematic diagram of an axial cross-section of the upper body 518 of the joint. Figure 5B As shown in Figure 5C, the upper body 518 of the connector includes a head 521 and a body 522, wherein the outer diameter of the head 521 is larger than the outer diameter of the body 522. The head 521 can be inserted into the lower part 502 of the connector, while the body 522 is blocked by the lower part 502 of the connector and cannot be further inserted into the lower part 502 of the connector. The head 521 includes a section configured in a prismatic shape, such as a hexagonal prism, for cooperating with a tool to facilitate the screwing tool to screw the upper body 518 of the connector. The upper body 518 of the connector has a cavity 509 and a detection device mounting cavity 519 therein, and the detection device mounting cavity 519 is used to install a detection device. The cavity 509 is connected to the detection device mounting cavity 519, and the cavity 509 can be connected to the fluid in the device under test to form a detection channel, so that the detection device can be connected to the fluid in the device under test, and then detect the parameters of the fluid in the device under test. The detection device mounting cavity 519 is formed inwardly from the top surface of the connector upper body 518, and the inner wall of the detection device mounting cavity 519 is provided with internal threads for mating with the external threads of the detection device, thereby mounting the detection device in the connector upper body 518. The detection device mounting cavity 519 can be adaptively configured according to the structure of the detection device, allowing the connector 500 to accommodate different types of detection devices.

[0092] The body 522 is connected to the head 321, and a plurality of holes 571 are provided on the side wall of the body 522. The holes 571 are connected to the cavity 509, allowing fluid to enter the cavity 309 through the holes 571. The body 522 is provided with a groove 538 that is formed by narrowing from the outside to the inside. The groove 538 is used to install the joint sealing device 551. The groove 538 is provided at the upper part of the body 522, that is, near the head 521. The joint sealing device 351 is a sealing ring made of elastic material that can be put on the body 322 and partially accommodated in the groove 338. The outer side of the body 522 is provided with a limit portion 573 formed by an enlarged outer diameter. The limit portion 573 is used to limit the upper joint body 518 from escaping from the top of the lower joint portion 502. The limit portion 573 is configured to be detachable to facilitate the installation of the upper joint body 518.

[0093] The body 522 is recessed from the bottom surface to form a movable component cavity 558. The wall of the movable component cavity 558 is provided with internal threads for mating with the movable component 510. The movable component cavity 558 is located below the cavity 509 and is not connected to the cavity 509.

[0094] FIG5D is a schematic diagram of an axial cross-section of the movable component 510. Figure 5B As shown in FIG5D , the movable component 510 includes a threaded post 548 and a support block 514 that is sleeved over the lower end of the threaded post 548. The outer side of the threaded post 548 is provided with external threads, enabling the threaded post 548 to engage with the internal threads of the movable component cavity 558 and be screwed into the movable component cavity 558. The support block 514 has a channel sealing device mounting groove 515 recessed inward from its top surface for mounting the channel sealing device 511. The channel sealing device 511 is a sealing ring made of an elastic material. When the channel sealing device 511 is placed in the channel sealing device mounting groove 515, it is higher than the top surface of the support block 514. The outer side of the support block 514 is shaped like a hexagonal prism, which cooperates with the joint lower portion 502 to restrict the rotation of the movable component 510 relative to the joint lower portion 502. Of course, the outer side of the movable component 510 can also be configured in other shapes as long as it can cooperate with the joint lower portion 502 and restrict the rotation of the movable component 510 relative to the joint lower portion.

[0095] FIG5E is a schematic diagram of an axial cross-section of the lower portion 502 of the joint. Figure 5BAs shown in Figure 5E, the lower portion 502 of the connector includes a top 525 and a bottom 526. The bottom 526 can be connected to the device under test. For example, an external thread is provided on the outside of the bottom 526 for cooperating with the internal thread in the device under test to connect the connector 500 to the device under test. The top 525 includes a section that is configured in a prismatic shape, such as a hexagonal prism, which is convenient for cooperating with a tool so as to be screwed by the tool. The lower portion 502 of the connector has a cavity 541 that runs through it in the axial direction. The cavity 541 can accommodate the upper portion 501 of the connector and can communicate with the fluid in the device under test. When the upper portion body 518 of the connector is inserted into the lower portion 502 of the connector, the body 522 is located in the cavity 541, and the head 521 can be blocked by the top 525, so that the upper portion body 518 of the connector cannot continue to be inserted into the interior of the lower portion 502 of the connector.

[0096] The cavity 541 has a front section 561 and a rear section 562. At the junction of the front section 561 and the rear section 562, a first stop 564 is formed because the inner diameter of the front section 561 is smaller than that of the rear section 562. The first stop 564 is used to prevent the upper connector body 518 from falling off from the upper portion of the lower connector 502.

[0097] Specifically, the rear section 562 of the cavity includes a first section 567 and a second section 568. At the connection between the first section 567 and the second section 568, the inner diameter of the first section 567 is smaller than the inner diameter of the second section 568, thereby forming a second limiting step 575. The second limiting step 575 is used to cooperate with the channel sealing device 511. The second section 568 can accommodate the movable component 510, allowing the movable component 510 to move up and down in the second section 568. The shape of the second section 568 is set to be hexagonal and matches the outer shape of the movable component 510. Therefore, when the movable component 510 moves up and down in the rear section 568 of the cavity, the movable component 510 cannot rotate relative to the lower part 502 of the joint. Of course, the shape of the rear section 568 of the cavity can also be set in other ways, as long as the movable component 510 cannot rotate relative to the lower part 502 of the joint. The lower portion of the second section 568 is further provided with a protrusion 598 extending inward from the inner wall of the second section 568. The protrusion 598 is used to limit the downward movement distance of the movable part 510 to prevent the movable part 510 from falling off from the upper body 518 of the connector.

[0098] Figure 6A and Figure 6B are cross-sectional schematic diagrams of the connector 500 in the open and closed states, respectively. Figure 6A FIG shows the open state of the connector 500. In this embodiment, the connector upper body 518 and the connector lower part 502 are always in the closest position, and the movable part 510 moves up and down relative to the connector lower part 502. Figure 6AAs shown, an inlet channel 680 is formed between the rear section 562 of the cavity of the lower connector portion 502 and the upper connector portion 501. When the connector 500 is in the open state, the inlet channel 680 is open, and a gap is formed between the channel sealing device 511 and the stop step 575. Fluid flows from the device under test along the direction indicated by arrow 685 through the space between the side wall of the movable component 510 and the wall of the rear section 562 of the cavity of the lower connector portion 502, passes through the space between the channel sealing device 511 and the stop step 575, and then enters the cavity 509 through the hole 571 of the upper connector body 518, thereby allowing the fluid to communicate with the detection device connected to the upper connector body 518.

[0099] Figure 6B The connector 500 is shown in a closed state. When the connector 500 needs to be disconnected, the upper connector body 518 rotates relative to the lower connector 502. At this time, the hexagonal prism-shaped movable part 510 mounted on the body 518 is restricted by the hexagonal prism-shaped cavity rear section 568 of the lower connector 502 and cannot rotate relative to the lower connector 502. At the same time, the movable part 510 and the upper connector body 518 are threadedly engaged, so that the movable part 510 moves upward relative to the lower connector 502 along the axial direction of the connector 500 until the movable part 510 is disconnected. Figure 6B The channel sealing device 511 is driven by the movable component 510 until it abuts against the second stop step 575. The channel sealing device 511 is slightly deformed by the second stop step 575, thereby forming a seal with the stop step 575. At this point, the inlet channel 680 is closed, preventing fluid from entering the chamber 509. The joint 500 is closed.

[0100] The joint 500 rotates between the joint upper portion 501 and the joint lower portion 502 to move the movable part 510 closer to or farther from the joint lower portion 502, thereby being able to Figure 6A The open state shown and Figure 6B When the upper portion 501 of the connector 500 rotates relative to the lower portion 502, the connector sealing device 551 is always in contact with the front section 561 of the cavity of the lower portion 502 and is squeezed by the front section 561 to produce a slight deformation, thereby forming a sealing structure, so that the fluid cannot flow out of the gap between the threads to the outside of the connector 500.

[0101] The connector 500 has the same advantages as the connector 300 and can achieve the technical effects of the connector 300.

[0102] Figure 7A This is the fourth embodiment of the present application, which provides another connector 700. The connector 700 is connected to Figure 1A and 1BThe joint 100 shown in FIG. 1 is similar to the joint 100 shown in FIG. 1 , except that the sealing device 711 is arranged inside the upper part 701 of the joint.

[0103] Figure 7A This is a perspective view of the first embodiment of the connector of the present application. Figure 7B for Figure 7A Exploded view of the connector in Figure 7C and Figure 7D An axial cross-sectional view of the upper and lower parts of the joint is used to illustrate the structure of the joint, such as Figure 7A and Figure 7B As shown, the joint 700 includes a joint upper portion 701 and a joint lower portion 702, wherein the joint upper portion 701 is partially inserted into the joint lower portion 702 and can rotate relative to the joint lower portion 702. The joint 700 can be opened or closed by the relative rotation between the joint upper portion 701 and the joint lower portion 702. The joint lower portion 702 is used to connect to the device under test, and the joint upper portion 701 is used to connect to the detection device, so that by controlling the opening and closing of the joint 700, the connection and disconnection between the fluid in the device under test and the detection device are controlled. The detection device can be an instrument or a sensor, etc. The joint 700 also includes a channel sealing device 711 and a joint sealing device 751.

[0104] like Figure 7B and 7C As shown, the upper portion 701 of the connector includes a head 721 and a body 722, wherein the outer diameter of the head 721 is larger than the outer diameter of the body 722, and the head 721 can be inserted into the lower portion 702 of the connector, while the body 722 is blocked by the lower portion 702 of the connector and cannot be further inserted into the lower portion 702 of the connector. The head 721 includes a section configured as a prism, such as a hexagonal prism, for cooperating with a tool to facilitate tool screwing. The upper portion 701 of the connector has a cavity 709 and a detection device mounting cavity 719, and the detection device mounting cavity 719 is used to install a detection device. The cavity 709 is connected to the detection device mounting cavity 719, and the cavity 709 can be connected to the fluid in the device under test to form a detection channel. The detection device can be connected to the fluid in the device under test, thereby detecting the parameters of the fluid in the device under test. The detection device mounting cavity 719 is formed inwardly from the top surface of the connector upper portion 701, and the inner wall of the detection device mounting cavity 719 is provided with internal threads for mating with the external threads of the detection device, thereby mounting the detection device in the connector upper portion 701. The detection device mounting cavity 719 can be adaptively configured according to the structure of the detection device, allowing the connector 700 to accommodate different types of detection devices.

[0105] The body 722 includes an upper body section 731 and a lower body section 732, wherein the upper body section 731 is connected to the head 721. The outer wall of the upper body section 731 is provided with an external thread, forming a body thread section 735, which is used to cooperate with the internal thread in the lower joint portion 702. Above the body thread section 735, a groove 738 is provided, which is formed by narrowing from the outside to the inside. The groove 738 is used to accommodate the joint sealing device 751. The joint sealing device 751 is a sealing ring made of elastic material that can be put on the body 722 and partially accommodated in the groove 738. The lower end of the lower body section 732 has a limit portion 744 formed by extending outward. The limit portion 744 is used to prevent the upper joint portion 701 from escaping from above the lower joint portion 702. Cavity 709 passes through the lower surface of connector upper portion 701 and communicates with opening 766 on the lower surface, allowing fluid to flow from opening 766 on the lower surface of connector upper portion 701 into cavity 709. A groove 715 extending outward from the inner wall is provided at the lower portion of cavity 709 near opening 766. Groove 715 is used to mount channel sealing device 711. Channel sealing device 711 is a sealing ring made of elastic material that can be partially inserted into groove 715. The inner diameter of channel sealing device 711 is smaller than the inner diameter of groove 715 at its edge. In other words, at least a portion of the inner edge of sealing device 711 extends inwardly beyond the edge of groove 715.

[0106] like Figure 7B and 7D As shown, the lower portion 702 of the connector includes a top 725 and a bottom 726. The bottom 726 can be connected to the device under test. For example, an external thread is provided on the outside of the bottom 726 for cooperating with the internal thread in the device under test to connect the connector 700 to the device under test. The top 725 includes a section that is configured in a prismatic shape, such as a hexagonal prism, which is convenient for cooperating with a tool so as to be screwed by the tool. The lower portion 702 of the connector has a cavity 741 that runs through it in the axial direction. The cavity 741 can accommodate the upper portion 701 of the connector and is connected to the fluid in the device under test. When the upper portion 701 of the connector is inserted into the lower portion 702 of the connector, the body 722 is located in the cavity 741, and the head 721 can be blocked by the top 725, so that the upper portion 701 of the connector cannot continue to be inserted into the interior of the lower portion 702 of the connector.

[0107] Cavity 741 has a front section 761 and a rear section 762. The inner wall of front section 761 includes a smooth section 765 and a threaded section 767. Threaded section 767 cooperates with threaded section 735 of body 722, enabling the upper connector portion 701 and lower connector portion 702 to rotate relative to each other through threaded engagement, thereby enabling relative movement along the axial direction of connector 700. Smooth section 765 cooperates with connector sealing device 751, preventing fluid from leaking through the gap between upper and lower connector portions 701, 702 during relative rotation.

[0108] A bracket 733 is provided at the lower end of the rear section 162 of the cavity. The bracket 733 is provided with a hole 734, which allows fluid to pass through the hole 734 and enter the cavity 741 of the lower portion 702 of the connector. A sealing block 730 is provided on the bracket 733. The sealing block 730 is fixedly connected to the bracket 733 and extends into the cavity 741. The sealing block 730 includes a larger head 757 and a waist 759 that narrows from the outside to the inside. When the upper portion 701 of the connector rotates relative to the lower portion 702 of the connector, the channel sealing device 711 moves up and down relative to the sealing block 730. This allows the channel sealing device 711 to be flush with the waist 759 or the head 757.

[0109] Figure 8A and Figure 8B are cross-sectional schematic diagrams of the connector 700 in the open and closed states, respectively. Figure 8A FIG shows the open state of the connector 700. Figure 8A As shown, an inlet channel 880 is formed between the lower body section 732 and the sealing mating block 730. When the connector 700 is in the open position, the channel sealing device 711 is flush with the waist portion 759 of the sealing mating block, with a gap between them, and the inlet channel 880 is open. Fluid can enter between the sealing mating block 730 and the sealing mating device 711 from the hole 734, as indicated by arrow 885, and pass through the cavity 709, where it can communicate with the detection device connected to the upper portion 101 of the connector. At this point, the inlet channel 880 is open, and the connector 700 is in communication.

[0110] Figure 8B The connector 700 is shown in a closed state. When the connector 700 needs to be disconnected, the connector upper portion 701 is rotated relative to the connector lower portion 702. As a result, due to the threaded engagement between the connector upper portion 701 and the connector lower portion 702, the connector upper portion 701 is moved away from the connector lower portion 702 until the connector reaches the state shown in FIG. Figure 8B The position shown is shown. At this point, channel sealing device 711, driven by connector upper portion 701, moves to a position flush with head 757 of sealing mating block 730 and rests against head 757. Consequently, channel sealing device 711 contacts head 757 and is slightly deformed by the compression of head 757, forming a seal between sealing device 711 and head 757. Inlet channel 880 is closed, preventing fluid from entering cavity 709. Connector 700 is closed.

[0111] The connector 700 has similar advantages to the connector 100 and can realize the functions of the connector 100 .

[0112] Figure 9A This is the fifth embodiment of the present application, which provides another connector 900. The connector 900 is connected to Figure 7A and 7B The joint 700 shown in FIG. 1 is similar to the joint 700 shown in FIG. 1 , except that the sealing device 911 is arranged inside the lower part 902 of the joint.

[0113] Figure 9A This is a perspective view of the first embodiment of the connector of the present application. Figure 9B for Figure 9A 9C and 9D are axial cross-sectional views of the upper and lower parts of the joint, respectively, for illustrating the structure of the joint. Figure 9A and Figure 9B As shown, the joint 900 includes a joint upper portion 901 and a joint lower portion 902, wherein the joint upper portion 901 is partially inserted into the joint lower portion 902, and the joint upper portion 901 can rotate relative to the joint lower portion 902. The joint 900 can be opened or closed by the relative rotation between the joint upper portion 901 and the joint lower portion 902. The joint lower portion 902 is used to connect to the device under test, and the joint upper portion 901 is used to connect to the detection device, so that by controlling the opening and closing of the joint 900, the connection and disconnection between the fluid in the device under test and the detection device can be controlled. The detection device can be an instrument or a sensor, etc. The joint 900 also includes a channel sealing device 911 and a joint sealing device 951.

[0114] like Figure 9B As shown in FIG9C , the upper portion 901 of the connector includes a head 921 and a body 922, wherein the outer diameter of the head 921 is larger than the outer diameter of the body 922, and the head 921 can be inserted into the lower portion 902 of the connector, while the body 922 is blocked by the lower portion 902 of the connector and cannot be further inserted into the lower portion 902 of the connector. The head 921 includes a section configured in a prism shape, such as a hexagonal prism shape, for cooperating with a tool. The upper portion 901 of the connector has a cavity 909 and a detection device mounting cavity 919, and the detection device mounting cavity 919 is used to install a detection device. The cavity 909 is connected to the detection device mounting cavity 919, and the cavity 909 can be connected to the fluid in the device under test to form a detection channel, so that the detection device can be connected to the fluid in the device under test, thereby detecting the parameters of the fluid in the device under test. The detection device mounting cavity 919 is formed inwardly from the top surface of the connector upper portion 901, and the inner wall of the detection device mounting cavity 919 is provided with internal threads for mating with the external threads of the detection device, thereby mounting the detection device in the connector upper portion 901. The detection device mounting cavity 919 can be adaptively configured according to the structure of the detection device, making it easy for the connector 900 to adapt to different types of detection devices.

[0115] The body 922 comprises an upper section 931 and a lower section 932, with the upper section 931 connected to the head 921. The outer wall of the upper section 931 is provided with an external thread, forming a threaded section 935, which mates with the internal threads in the lower connector section 902. Above the threaded section 935 is a groove 938 that tapers inward from the outside. This groove 938 is used to mount a connector seal 951. This seal 951 is a sealing ring made of elastic material that fits over the body 922 and is partially accommodated in the groove 938. The lower end of the lower section 932 has an outwardly extending stop 944 that prevents the upper connector section 901 from being removed from above the lower connector section 902. The sidewall of the lower section 932 is provided with a plurality of holes 971 that communicate with the cavity 909, allowing fluid to enter the cavity 909 through the holes 971.

[0116] like Figure 9B As shown in Figure 9D, the lower part 902 of the connector includes a top 925 and a bottom 926. The bottom 926 can be connected to the device under test. For example, an external thread is provided on the outside of the bottom 926 for cooperating with the internal thread in the device under test to connect the connector 900 to the device under test. The top 925 includes a section that is configured in a prismatic shape, such as a hexagonal prism, which is convenient for cooperating with a tool so as to be screwed by the tool. The lower part 902 of the connector has a cavity 941 that runs through it in the axial direction. The cavity 941 can accommodate the upper part 901 of the connector and is connected to the fluid in the device under test. When the upper part 901 of the connector is inserted into the lower part 902 of the connector, the body 922 is located in the cavity 941, and the head 921 can be blocked by the top 925, so that the upper part 901 of the connector cannot continue to be inserted into the interior of the lower part 902 of the connector.

[0117] Cavity 941 has a front section 961 and a rear section 962. The inner wall of front section 961 includes a smooth section 965 and a threaded section 967. Threaded section 967 cooperates with threaded section 935 of body 922, enabling the upper connector portion 901 and lower connector portion 902 to rotate relative to each other through threaded engagement, thereby enabling relative movement along the axial direction of connector 900. Smooth section 965 cooperates with connector sealing device 951, preventing fluid from leaking through the gap between upper connector portion 901 and lower connector portion 902 during relative rotation.

[0118] The rear section 962 of the cavity includes a first section 968 and a second section 969. The diameter of the first section 968 is smaller than the diameter of the second section 969, thereby forming a limit step 955 at the connection between the first section 968 and the second section 969. The limit step 955 is used to prevent the upper part 901 of the joint from falling off from the lower part 902 of the joint.

[0119] The first section 968 has a groove 915 formed inwardly from the wall. The groove 915 is used to install the channel sealing device 911. When the channel sealing device 911 is installed in the groove 915, the inner side of the channel sealing device 911 extends inwardly beyond the edge of the groove 915. The channel sealing device 911 is a sealing ring made of elastic material.

[0120] Figure 10A and Figure 10B are cross-sectional schematic diagrams of the connector 900 in the open and closed states, respectively. Figure 10A FIG shows the open state of the connector 900. Figure 10A As shown, an inlet channel 1080 is formed between the lower body section 932 and the rear cavity section 962. When the connector 900 is in the open state, the channel sealing device 911 is offset from the position of the hole 971 and is located above the hole 971, and the inlet channel 1080 is open. At this time, the channel sealing device 911 is squeezed by the side wall of the connector lower portion 901 and abuts against the side wall of the connector lower portion 901. The fluid can enter the hole 971 from the gap between the hole 971 and the side wall of the connector lower portion 901 along the direction indicated by arrow 1085, and then flow through the hole 971 into the cavity 909. The inlet channel 1080 is opened, and the connector 900 is connected.

[0121] Figure 10B The connector 900 is shown in a closed state. When the connector 900 needs to be disconnected, the connector upper portion 901 is rotated relative to the connector lower portion 902. As a result, due to the engagement of the threads between the connector upper portion 901 and the connector lower portion 902, the connector upper portion 901 moves away from the connector lower portion 902 along the axial direction of the connector 900 until the connector is disconnected. Figure 10B At this time, the channel sealing device 911 is flush with the position of the hole 971, and the channel sealing device 911 can return to its original shape, thereby sealing the hole 971, so that the inlet channel 980 is closed, the fluid cannot enter the cavity 909, and the joint 900 is closed.

[0122] The connector 900 has similar advantages to the connector 100 and can realize the functions of the connector 100 .

[0123] Figure 11A This is the sixth embodiment of the present application, which provides another connector 1100. The connector 1100 is connected to Figure 1A and 1B The connector 100 shown in FIG. 1 is similar to the connector 100 shown in FIG. 1 , except that the upper portion 1102 of the connector includes a resilient device.

[0124] Figure 11A This is a perspective view of the first embodiment of the connector of the present application. Figure 11B for Figure 11A Exploded view of the connector in Figure 11C and Figure 11DAn axial cross-sectional view of the upper and lower parts of the joint is used to illustrate the structure of the joint, such as Figure 11A and Figure 11B As shown, the joint 1100 includes a joint upper portion 1101 and a joint lower portion 1102, wherein the joint upper portion 1101 is partially inserted into the joint lower portion 1102, and the joint upper portion 1101 can rotate relative to the joint lower portion 1102. The joint 1100 can be opened or closed by the relative rotation between the joint upper portion 1101 and the joint lower portion 1102. The joint lower portion 1102 is used to connect to the device under test, and the joint upper portion 1101 is used to connect to the detection device, so that by controlling the opening and closing of the joint 1100, the connection and disconnection between the fluid in the pipeline and the detection device can be controlled. The detection device can be an instrument or a sensor, etc. The joint 1100 also includes a first joint sealing device 1151 and a second joint sealing device 1152.

[0125] like Figure 11B and 11C As shown, the upper part 1101 of the connector includes a head 1121 and a body 1122, wherein the outer diameter of the head 1121 is larger than the outer diameter of the body 1122, and the head 1121 can be inserted into the lower part 1102 of the connector, while the body 1122 is blocked by the lower part 1102 of the connector and cannot be further inserted into the lower part 1102 of the connector. The head 1121 includes a section configured as a prism, such as a hexagonal prism, for cooperating with a tool. The upper part 1101 of the connector has a cavity 1109 and a detection device mounting cavity 1119, and the detection device mounting cavity 1119 is used to install a detection device. The cavity 1109 is connected to the detection device mounting cavity 1119, and the cavity 1109 can be connected to the fluid in the device under test to form a detection channel, so that the detection device can be connected to the fluid in the device under test, thereby detecting the parameters of the fluid in the device under test. The detection device mounting cavity 1119 is recessed inward from the top surface of the connector upper portion 1101. The inner wall of the detection device mounting cavity 1119 is provided with internal threads for mating with the external threads of the detection device to mount the detection device in the connector upper portion 1101. The detection device mounting cavity 1119 can be adaptively configured according to the structure of the detection device, allowing the connector 1100 to accommodate different types of detection devices.

[0126] The body 1122 is connected to the head 1121 and comprises an upper section 1131 and a lower section 1132, with the upper section 1131 being connected to the head 1121. The outer wall of the upper section 1131 is provided with an external thread, forming a threaded section 1135, which mates with the internal threads in the lower joint portion 1102. A groove 1138, tapering from the outside to the inside, is located above the threaded section 1135. This groove 1138 is designed to accommodate a first joint sealing device 1151. First joint sealing device 1151 is a sealing ring made of an elastic material that fits over the body 1122 and is partially accommodated in groove 1138.

[0127] Lower body section 1132 includes a spring device retaining section 1160. Its sidewall is provided with a retaining opening 1163 extending axially. Below spring device retaining section 1160 is a groove 1139 that tapers inward from the outer surface of the sidewall. Groove 1139 accommodates the second joint sealing device 1152. The lower end of lower body section 1132 has an outwardly protruding retaining step 1144 to prevent the upper joint portion 1101 from being dislodged from the lower joint portion 1102.

[0128] Cavity 1109 includes a first section 1193 and a second section 1194. The inner diameter of first section 1193 is smaller than that of second section 1194, forming a stop 1175 at the junction of first and second sections 1193, 1194. Stop 1175 is configured to contact channel sealing device 1111. An opening 1197 is formed at the upper end of second section 1194, connecting first and second sections 1193, 1194 through opening 1197. An elastic device support block 1173 is disposed within first section 1193. Elastic device support block 1173 has a through-hole 1178. When elastic device support block 1173 is installed in cavity 1109, the outer wall of elastic device support block 1173 abuts against the inner wall of upper joint portion 1101, allowing fluid to flow through through-hole 1178.

[0129] like Figure 11B and 11DAs shown, the connector lower portion 1102 includes a connector lower body 1117 and an elastic device 1110. The connector lower body 1117 includes a top 1125 and a bottom 1126. The bottom 1126 can be connected to the device under test. For example, an external thread is provided on the outside of the bottom 1126 for mating with an internal thread in the device under test to connect the connector 1100 to the device under test. The top 1125 includes a section configured as a prism, such as a hexagonal prism, to facilitate mating with a tool so that it can be screwed by the tool. The connector lower body 1117 has a cavity 1141 extending through the axial direction. The cavity 1141 can accommodate the connector upper portion 1101 and is connected to the fluid in the device under test. When the connector upper part 1101 is inserted into the connector lower body 1117 , the body 1122 is located in the cavity 1141 , and the head 1121 can be blocked by the top 1125 , so that the connector lower body 1117 cannot be further inserted into the interior of the connector lower body 1117 .

[0130] Cavity 1141 comprises a front section 1161 and a rear section 1162. The inner wall of front section 1161 includes a smooth section 1165 and a threaded section 1167. Threaded section 1167 cooperates with threaded section 1135 of body 1122, enabling relative rotation of upper connector portion 1101 and lower connector body 1117 through threaded engagement, resulting in relative movement along the axial direction of connector 1100. Smooth section 1165 cooperates with first connector sealing device 1151. When upper connector portion 1101 and lower connector body 1117 rotate relative to each other, smooth section 1165 compresses first connector sealing device 1151, forming a seal that prevents fluid from leaking into the environment through the gap between upper connector portion 1101 and lower connector body 1117.

[0131] Rear section 1162 of the cavity includes a protruding section 1179 formed by an inward narrowing of the inner diameter. The upper end of protruding section 1179 forms a first limiting step 1177, and the lower end of protruding section 1179 forms a second limiting step 1178. First limiting step 1177 cooperates with limiting pin 1189 to limit the downward movement of the elastic device, while second limiting step 1178 prevents upper connector portion 1101 from falling off lower connector body 1117.

[0132] Figure 11EThis is a cross-sectional schematic diagram of the elastic device, which includes a channel sealing device 1111 and a spring 1116. Channel sealing device 1111 is made of an elastic material, and its lower end tapers downwards to form an inverted cone. A connecting rod 1187 is positioned above channel sealing device 1111, and a spring is sleeved on 1187. The lower end of spring 1116 is capable of contacting channel sealing device 1111. Channel sealing device 1111 is provided with an axially extending through-hole, through which a stop pin 1189 extends, with both ends of stop pin 1189 extending from the through-hole.

[0133] Figure 12A and Figure 12B are cross-sectional schematic diagrams of the connector 1100 in the open and closed states, respectively. Figure 12A The connector 1100 is shown in the open state. An inlet channel 1280 is formed between the elastic device 1110 and the sidewall of the cavity 1109. At this point, the stop pin 1189 abuts against the first stop step 1175. In this state, the spring 1116 is compressed, the channel sealing device 1111 moves away from the second section 1194, and the inlet channel 1280 is open. This allows fluid to flow from the second section 1194 through the opening 1197 into the first section 1193, through the gap between the channel sealing device 1111 and the inner wall of the connector upper portion 1101, past the spring 1188, and through the through hole 1178, ultimately connecting to the detection device.

[0134] Figure 12B The connector 1100 is shown in a closed state. When the connector 1100 needs to be disconnected, the connector upper portion 1101 rotates relative to the connector lower body 1117, thereby approaching the connector lower body 1117 until it reaches the state in which the connector is disconnected. Figure 12B The state shown. At this time, the channel sealing device 1111 is subjected to the tension of the spring and rests against the first limit step 1175. The channel sealing device 1111 is squeezed by the first limit step 1175 to cover the opening 1197 of the second section 1194, preventing fluid from entering the first section 1193. The inlet channel 1280 is closed. At this time, the joint 1100 is closed.

[0135] The connector 1100 has the same advantages as the connector 100 and can realize the functions of the connector 100 .

[0136] Figure 13A This is the seventh embodiment of the present application, which provides another connector 1300. The connector 1300 is connected to Figure 11A and 11B The joint 1100 shown in FIG. 1 is similar to the joint 1100 shown in FIG. 1 , except that the elastic device 1310 is provided on the upper portion 1301 of the joint.

[0137] Figure 13A This is a perspective view of the seventh embodiment of the connector of the present application. Figure 13B for Figure 13A Exploded view of the connector in Figure 13C 、 3D 13E and 13A are axial cross-sectional views of the upper body of the joint, the elastic device and the lower part of the joint, respectively, for illustrating the structure of the joint 1300. Figure 13A and Figure 13B As shown, the joint 1300 includes a joint upper portion 1301 and a joint lower portion 1302, wherein the joint upper portion 1301 is partially inserted into the joint lower portion 1302, and the joint upper portion 1301 can rotate relative to the joint lower portion 1302. The joint 1300 can be opened or closed by the relative rotation between the joint upper portion 1301 and the joint lower portion 1302. The joint lower portion 1302 is used to connect to the device under test, and the joint upper portion 1301 is used to connect to the detection device, so that by controlling the opening and closing of the joint 1300, the connection and disconnection between the fluid in the device under test and the detection device can be controlled. The detection device can be an instrument or a sensor, etc. The joint 1300 also includes a joint sealing device 1351 and a channel sealing device 1311.

[0138] like Figure 13B and 13C As shown, the upper part 1301 of the connector includes an upper connector body 1318 and an elastic device 1310. The upper connector body 1318 includes a head 1321 and a body 1322, wherein the outer diameter of the head 1321 is larger than the outer diameter of the body 1322. The head 1321 can be inserted into the lower part 1302 of the connector, while the body 1322 is blocked by the lower part 1302 and cannot be further inserted into the lower part 1302. The upper connector body 1318 has a cavity 1309 and a detection device installation cavity 1319 therein. The detection device installation cavity 1319 is used to install a detection device. The cavity 1309 is connected to the detection device installation cavity 1319, and the cavity 1309 can be connected to the fluid in the device under test to form a detection channel, so that the detection device can be connected to the fluid in the device under test, and then detect the parameters of the fluid in the device under test. The detection device mounting cavity 1319 is recessed inward from the top surface of the connector upper body 1318. The inner wall of the detection device mounting cavity 1319 is provided with internal threads for mating with the external threads of the detection device, thereby mounting the detection device in the connector upper body 1318. The detection device mounting cavity 1319 can be adaptively configured according to the structure of the detection device, allowing the connector 1300 to accommodate different types of detection devices.

[0139] The body 1322 is connected to the head 1321. The outer wall of the body 1322 is provided with an external thread, forming a body threaded section 1335, which is designed to mate with the internal threads in the lower portion 1302 of the connector. Above the body threaded section 1335, a groove 1338 is provided, narrowing inward from the outside. Groove 1338 is designed to accommodate a connector seal 1351. This seal 1351 is a sealing ring made of an elastic material that fits over the body 1322 and is partially accommodated in groove 1338. The sidewall of the body 1322 is provided with a plurality of holes 1371, allowing fluid to enter the cavity 1309 through the holes 1371, thereby connecting it to the detection device.

[0140] like Figure 13B and 13D As shown, the joint upper portion 1301 further includes an elastic device 1310, which includes a push block 1373 and a support block 1314. Push block 1373 and support block 1314 are connected by a connecting rod 1387, which is equipped with a spring 1388. One end of spring 1388 abuts the lower surface of push block 1373, while the other end can abut against the joint upper body 1318. A groove 1315 is formed inwardly from the upper surface of support block 1314, which is used to mount a channel sealing device 1311. Channel sealing device 1311 is a sealing ring made of elastic material.

[0141] like Figure 13B and 13E As shown, the connector lower portion 1302 includes a top portion 1325 and a bottom portion 1326. The bottom portion 1326 can be connected to the device under test. For example, an external thread is provided on the outside of the bottom portion 1326 to cooperate with the internal thread in the device under test to connect the connector 1300 to the device under test. The connector lower portion 1302 has a cavity 1341 extending through the axial direction. The cavity 1341 can accommodate the connector upper body 1318 and communicate with the fluid in the device under test. When the connector upper body 1318 is inserted into the connector lower portion 1302, the body 1322 is located in the cavity 1341, and the head 1321 can be blocked by the top portion 1325, so that the connector upper body 1318 cannot be further inserted into the interior of the connector lower portion 1302.

[0142] Cavity 1341 has a front section 1361 and a rear section 1362. The inner wall of front section 1361 includes a smooth section 1365 and a threaded section 1367. Threaded section 1367 cooperates with threaded section 1335 of body 1322, enabling the upper connector body 1318 and lower connector body 1302 to rotate relative to each other through threaded engagement, thereby enabling relative movement along the axial direction of connector 1300. Smooth section 1365 cooperates with connector sealing device 1351, preventing fluid from leaking through the gap between upper connector body 1318 and lower connector body 1302 during relative rotation.

[0143] Rear section 1362 of the cavity includes a protruding section 1379 formed by narrowing the inner radial direction. The upper end of protruding section 1379 forms a first stop step 1375, and the lower end of protruding section 1379 forms a second stop step 1376. First stop step 1375 is configured to contact one end of spring 1388, while second stop step 1376 is configured to cooperate with channel sealing device 1311.

[0144] Figure 14A and Figure 14B are cross-sectional schematic diagrams of the connector 1300 in the open and closed states, respectively. Figure 14A The figure shows the open state of the joint 1400. An inlet channel 1480 is formed between the elastic device 1310 and the lower part 1302 of the joint. At this time, the upper body 1318 of the joint pushes the support block 1314 to a position away from the second limit step 1376, and the spring is in a compressed state. The inlet channel 1480 is opened, and the fluid flows along the direction of arrow 1485 through the gap between the support block 1314 and the inner wall of the lower part 1302 of the joint, the gap between the flow channel sealing device 1311 and the second limit step 1376, and then through the gap between the connecting rod 1387 and the protruding section 1379, into the space around the spring 1388, and then through the hole 1371 into the cavity 1309, thereby connecting with the detection device.

[0145] Figure 14B The connector 1300 is shown in a closed state. When the connector 1300 needs to be disconnected, the connector upper body 1318 rotates relative to the connector lower part 1302, thereby moving away from the connector lower part 1302 until the connector reaches the closed state. Figure 14B At this point, spring 1388 recovers its deformation, driving push block 1373 upward to its furthest position. Push block 1373 then drives support block 1314 upward to its furthest position. At this point, channel sealing device 1311 abuts against second stop step 1376. Channel sealing device 1311 is squeezed by second stop step 1376, sealing against it. Inlet channel 1480 is closed, thereby closing joint 1300.

[0146] The connector 1300 has the same advantages as the connector 100 and can realize the functions of the connector 100 .

[0147] The joint provided in the present application has a simple structure, low manufacturing cost, is easy to open and close, and has good sealing performance and is not prone to leakage, thereby preventing the fluid in the device under test from entering the external environment when the instrument or sensor is disassembled. In particular, when the fluid in the device under test is a refrigerant, the joint has good sealing performance and can be closed quickly, thereby avoiding the frosting phenomenon caused by refrigerant leakage and slow closing process during the closing process of the device under test. The upper part of the joint in the present application can be designed to cooperate with various types of instruments or sensors, without the need for an additional adapter between the instrument and the device under test.

[0148] Although only some features of the present application have been illustrated and described herein, various modifications and variations may be made by those skilled in the art. It should be understood that the appended claims are intended to cover all such modifications and variations that fall within the spirit and scope of the present application.

Claims

1. A joint, characterized in that: The connector comprises: A joint upper portion and a joint lower portion, wherein the joint upper portion has a cavity therein and the joint upper portion and the joint lower portion are capable of rotatably fitting together; an inlet channel, the inlet channel being arranged between the upper portion of the joint and the lower portion of the joint, the cavity being in communication with the inlet channel; Channel sealing device; By the relative rotational cooperation between the upper part of the joint and the lower part of the joint, the channel sealing device can close or open the inlet channel, thereby closing or opening the joint. wherein the lower portion of the joint comprises an inlet capable of allowing fluid to flow in and a stop step, the stop step being configured to face the inlet, and wherein by bringing at least a portion of the upper portion of the joint relatively close to the inlet of the lower portion of the joint, the channel sealing device can be moved away from the stop step to open the inlet channel, thereby opening the joint; and by bringing at least a portion of the upper portion of the joint relatively away from the inlet of the lower portion of the joint, the channel sealing device can be pressed against the stop step to close the inlet channel, thereby closing the joint; In which, the upper part of the joint includes a first threaded portion and a second threaded portion, the first threaded portion is configured to be connected to an external device, and the second threaded portion is rotated together by the upper part and the lower part of the joint to make the channel sealing device move away from or close to the limit step, the second threaded portion has a uniform diameter, and the inner diameter of the first threaded portion gradually increases in the direction away from the lower part of the joint.

2. The connector according to claim 1, wherein: By rotating the joint upper part, the joint upper part and the joint lower part can move relative to each other.

3. The connector according to claim 1, wherein: The joint further comprises a joint sealing device, which is arranged on the outside of the joint upper portion and can be in contact with the joint lower portion, so that the joint upper portion and the joint lower portion can be sealed.

4. The connector according to claim 1, wherein: The cavity forms a detection channel, and the detection channel is used to communicate with a detection device.

5. The connector according to claim 1, wherein: The channel sealing device is a sealing ring, a channel sealing device installation groove is provided on the upper part of the joint, and the sealing ring is arranged in the channel sealing device installation groove.

6. The connector according to claim 1, wherein: The upper part of the joint has a head and a body, the head is used to connect the detection device, the lower part of the joint has a cavity, and the body can be inserted into the cavity of the lower part of the joint.

7. The connector according to claim 6, wherein: The outer side of the body and the inner side of the cavity are respectively provided with threads that can cooperate with each other, so that when the upper part of the joint and the lower part of the joint rotate relative to each other, the upper part of the joint can move relative to the lower part of the joint along the axial direction of the joint, thereby approaching or moving away from the lower part of the joint.

8. The connector according to claim 7, wherein: When the joint upper portion moves relative to the joint lower portion, the joint upper portion drives the channel sealing device to move, thereby closing or opening the inlet channel.

9. The connector according to claim 1, wherein: The joint upper portion includes a movable component, and the channel sealing device is arranged on the movable component. When the joint upper portion rotates relative to the joint lower portion, the movable component can drive the channel sealing device to close or open the inlet channel.

10. The connector according to claim 9, wherein: The shape of the outer side of the movable part matches the lower part of the joint, so that when the upper part of the joint rotates relative to the lower part of the joint, the movable part moves relative to the lower part of the joint along the axial direction of the joint.

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