Quick release pipe connecting structure and high and low temperature test system
Through the quick disassembly of the pipe connection structure, the connection and separation of the pipe joints are achieved by using sleeve rotation, which solves the problems of inconvenient connection and poor stability in the prior art, improves the operation convenience and connection stability, and is suitable for the modular design of high and low temperature test systems.
Patent Information
- Application Number
- CN202422259449.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-14
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-14
AI Technical Summary
The existing pipe joints and nut connections are inconvenient during connection and disassembly, which easily damages the end of the pipe and has poor connection stability, and is prone to loosening or falling off during use.
A quick-removing pipe connection structure is adopted, including a first pipe joint, a sleeve and a second pipe joint, and the connection and disassembly are achieved by rotating the sleeve. The first gear ring is used to limit it between the second gear ring and the second pipe joint, avoiding the rotation of the first and second pipe joints, and increasing the jitter space to reduce the risk of component damage.
It realizes easy-to-operate connection and disassembly, reduces the risk of twisted and damaged pipe ends, improves connection stability, and supports modular design and transportation assembly of high and low temperature test systems.
Smart Images
Figure CN223153022U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of pipe joints, and in particular, to a quick-release pipe connection structure and a high and low temperature test system. Background Art
[0002] After research by the inventor, it is found that the existing pipe joints generally adopt the following connection form: an end of a pipe is provided with a pipe joint with an external thread, and an end of another pipe is provided with a nut with an internal thread. The connection of the two pipes is realized through the thread fit between the pipe joint and the nut. However, the existing connection form has at least the following problems:
[0003] 1. The pipe joint and the nut are respectively fixedly connected to the ends of the pipes. During the connection and disassembly process, it is not convenient to rotate the pipe joint or the nut, and even the ends of the pipes may be damaged.
[0004] 2. The ends of one pipe, the pipe joint, the nut to the ends of the other pipe are all rigidly connected. During use, the two pipes will inevitably bend relative to each other, making the ends of the two pipes prone to fatigue damage; moreover, the two pipes will inevitably vibrate, easily causing the connection between the pipe joint and the nut to become loose or even fall off, and the stability is poor. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a quick-release pipe connection structure and a high and low temperature test system, which can be connected and disassembled only by rotating the sleeve, is convenient to operate, and the first pipe joint is clamped between the sleeve and the second pipe joint, there is a certain buffer space, and it is not easy to become disconnected due to vibration, and the connection stability is good.
[0006] The embodiments of the utility model are implemented as follows:
[0007] In a first aspect, the utility model provides a quick-release pipe connection structure, which includes a first pipe joint, a sleeve and a second pipe joint;
[0008] The first pipe joint includes a first pipe body and a first retaining ring. The first pipe body is used for connecting to the end of a pipe, and the first retaining ring is arranged on the outer peripheral surface of the first pipe body;
[0009] The sleeve includes a second pipe body and a second retaining ring. The inner surface of one end of the second pipe body is provided with an internal thread, and the inner surface of the other end of the second pipe body is provided with the second retaining ring;
[0010] The second pipe joint is used for connecting to the end of another pipe, and an external thread is arranged on the second pipe joint;
[0011] Wherein, after the external thread on the second pipe joint is matched with the internal thread on the second pipe body, the first retaining ring is restricted between the second retaining ring and the second pipe joint.
[0012] In an alternative embodiment, the second pipe joint includes a third pipe body and an end ring. An external thread is provided on the outer surface of one end of the third pipe body, and an end ring is provided at the other end of the third pipe body.
[0013] In an alternative embodiment, the second pipe joint further includes a third retaining ring. The third retaining ring is disposed on the inner surface of the third pipe body, and the third retaining ring is used to limit the first pipe body from passing through the third pipe body.
[0014] In an alternative embodiment, the inner diameter a of the third retaining ring is smaller than the outer diameter b of one end of the first pipe body close to the third pipe body.
[0015] In an alternative embodiment, the inner diameter c of one end of the third pipe body close to the first pipe body is greater than or equal to the outer diameter b of one end of the first pipe body close to the third pipe body, and one end of the first pipe body close to the third pipe body is inserted into the third pipe body.
[0016] In an alternative embodiment, the distance e between the first retaining ring and the end face of one end of the first pipe body close to the third pipe body is greater than or equal to the distance f between the third retaining ring and the end face of one end of the third pipe body close to the first pipe body.
[0017] In an alternative embodiment, the quick-release pipe connection structure further includes a sealing gasket, and the sealing gasket is clamped between one end of the first pipe body close to the third pipe body and the third retaining ring.
[0018] In an alternative embodiment, the outer diameter g of the first retaining ring is less than or equal to the inner diameter h of the internal thread, the outer diameter g of the first retaining ring is greater than the inner diameter i of one end of the second pipe joint close to the first pipe body, the outer diameter g of the first retaining ring is greater than the inner diameter j of the second retaining ring, and the inner diameter j of the second retaining ring is greater than or equal to the outer diameter k of one end of the first pipe body away from the third pipe body.
[0019] In an alternative embodiment, the outer peripheral surfaces of the second pipe body and the end ring are regular polygons.
[0020] In an alternative embodiment, the first pipe joint, the sleeve, and the second pipe joint are integrally formed respectively.
[0021] In a second aspect, the present invention provides a high and low temperature test system. The high and low temperature test system includes a refrigeration main unit, a test chamber, and the above-mentioned quick-release pipe connection structure. An evaporator is provided in the test chamber. One end of the quick-release pipe connection structure is fixedly connected to the refrigeration main unit, and the other end is movably connected to the pipeline of the evaporator through a metal hose.
[0022] The beneficial effects of the quick-release pipe connection structure and the high and low temperature test system provided by the embodiments of the present invention include:
[0023] 1. The external thread on the second pipe joint mates with the internal thread on the second pipe body, and the first retaining ring is restricted between the second retaining ring and the second pipe joint, thereby realizing the connection between the first pipe joint and the second pipe joint. Only by rotating the sleeve can the connection and disassembly between the first pipe joint and the second pipe joint be achieved, which is convenient for operation.
[0024] 2. During the process of connecting and disconnecting the first pipe joint and the second pipe joint, only the sleeve rotates, and other components (including the first pipe joint, the second pipe joint, and the two connected pipes) do not need to rotate, which will not cause twisting damage to the two pipes.
[0025] 3. The first retaining ring is restricted between the second retaining ring and the second pipe joint, and there is a certain shaking space for the first retaining ring. Even if the first pipe joint shakes relative to the second pipe joint, the first pipe joint will not be disengaged from the second pipe joint, and the extrusion force between components will also be reduced, reducing the risk of damage to each component.
[0026] 4. The high and low temperature test system provided in this embodiment is designed in a modular manner. The refrigeration host and the test chamber are designed and produced as independent modules. The evaporator of the refrigeration host is independent of the test chamber and is combined together through a quick-disconnect pipe connection structure to achieve the functions of separate transportation and assembly of the refrigeration host and the test chamber. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.
[0028] Figure 1 It is a schematic diagram of the overall external structure of the quick-disconnect pipe connection structure provided in the embodiment of the present invention;
[0029] Figure 2 It is a schematic diagram of the full-sectional structure of the quick-disconnect pipe connection structure provided in the embodiment of the present invention;
[0030] Figure 3 It is a schematic diagram of the overall external structure of the first pipe joint;
[0031] Figure 4 It is a schematic diagram of the full-sectional structure of the first pipe joint;
[0032] Figure 5 It is a schematic diagram of the overall external structure of the sleeve;
[0033] Figure 6 It is a schematic diagram of the full-sectional structure of the sleeve;
[0034] Figure 7 It is a schematic diagram of the overall external structure of the second pipe joint;
[0035] Figure 8 It is a schematic diagram of the full-section structure of the second pipe joint.
[0036] Icon: 1 - First pipe joint; 11 - First pipe body; 12 - First retaining ring; 2 - Sleeve; 21 - Second pipe body; 211 - Internal thread; 22 - Second retaining ring; 3 - Second pipe joint; 31 - Third pipe body; 311 - External thread; 32 - End ring; 33 - Third retaining ring. Specific embodiments
[0037] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. Usually, the components of the embodiments of the present utility model described and illustrated herein can be arranged and designed in various different configurations.
[0038] Therefore, the following detailed description of the embodiments of the present utility model provided in the accompanying drawings is not intended to limit the scope of the claimed present utility model, but merely represents selected embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.
[0039] It should be noted that: similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0040] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present utility model is habitually placed during use. It is only for the convenience of describing the present utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation of the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive distinction and cannot be construed as indicating or implying relative importance.
[0041] In addition, terms such as "horizontal" and "vertical" do not require the components to be absolutely horizontal or hanging vertically, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0042] In the description of the present invention, it should also be noted that, unless otherwise clearly specified and defined, the terms "arranged", "installed", "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.
[0043] Please refer to Figure 1 and Figure 2 , this embodiment provides a quick-release pipe connection structure, which includes a first pipe joint 1, a sleeve 2 and a second pipe joint 3.
[0044] Specifically, the first pipe joint 1 includes a first pipe body 11 and a first retaining ring 12. The first pipe body 11 is used to connect to the end of a pipe, and the first retaining ring 12 is arranged on the outer peripheral surface of the first pipe body 11; the sleeve 2 includes a second pipe body 21 and a second retaining ring 22. An internal thread 211 is arranged on the inner surface of one end of the second pipe body 21, and a second retaining ring 22 is arranged on the inner surface of the other end of the second pipe body 21; the second pipe joint 3 is used to connect to the end of another pipe, and an external thread 311 is arranged on the second pipe joint 3.
[0045] Among them, after the external thread 311 on the second pipe joint 3 is engaged with the internal thread 211 on the second pipe body 21, the first retaining ring 12 is restricted between the second retaining ring 22 and the second pipe joint 3, so as to realize the connection between the first pipe joint 1 and the second pipe joint 3. Only by rotating the sleeve 2 can the connection and disassembly between the first pipe joint 1 and the second pipe joint 3 be realized, and the operation is convenient. Moreover, during the connection and disassembly of the first pipe joint 1 and the second pipe joint 3, only the sleeve 2 rotates, and other components (including the first pipe joint 1, the second pipe joint 3 and the two connected pipes) do not need to rotate, and the two pipes will not be distorted and damaged. The first retaining ring 12 has a certain shaking space. Even if the first pipe joint 1 shakes relative to the second pipe joint 3, the first pipe joint 1 will not be separated from the second pipe joint 3, and the extrusion force between the components will also be reduced, reducing the risk of damage to each component.
[0046] Specifically, the second pipe joint 3 includes a third pipe body 31, an end ring 32, and a third retaining ring 33. An external thread 311 is provided on the outer surface of one end of the third pipe body 31, and an end ring 32 is provided at the other end of the third pipe body 31. The third retaining ring 33 is provided on the inner surface of the third pipe body 31, and the third retaining ring 33 is used to limit the first pipe body 11 from passing through the third pipe body 31.
[0047] To ensure the sealing performance of the quick-release pipe connection structure, the quick-release pipe connection structure further includes a sealing washer (not shown in the figure). The sealing washer is clamped between one end of the first pipe body 11 close to the third pipe body 31 and the third retaining ring 33, thereby preventing the fluid inside the quick-release pipe connection structure from leaking, enabling the quick-release pipe connection structure to be normally used at -60°C, and the lowest temperature can reach -70°C.
[0048] The outer circumferential surfaces of the second pipe body 21 and the end ring 32 are regular polygons. In this way, the second pipe body 21 and the end ring 32 are the parts for the wrench to grip. During the process of connecting and disassembling the first pipe joint 1 and the second pipe joint 3, by fixing the end ring 32 with one wrench and then rotating the second pipe body 21 with another wrench, the connection and disassembly of the first pipe joint 1 and the second pipe joint 3 can be achieved. The operation is convenient, and neither the first pipe joint 1, the second pipe joint 3, nor the two connected pipes will rotate.
[0049] To improve the structural strength of each component, the first pipe joint 1, the sleeve 2, and the second pipe joint 3 are respectively integrally formed with brass materials. The quick-release pipe connection structure is made by brass machining, which is convenient for welding with copper pipes.
[0050] Please refer to Figures 2 to 8 , the inner diameter a of the third retaining ring 33 is smaller than the outer diameter b of one end of the first pipe body 11 close to the third pipe body 31. The inner diameter c of one end of the third pipe body 31 close to the first pipe body 11 is greater than or equal to the outer diameter b of one end of the first pipe body 11 close to the third pipe body 31, and one end of the first pipe body 11 close to the third pipe body 31 is inserted into the third pipe body 31.
[0051] Please refer to Figure 2 , the distance e between the first retaining ring 12 and the end face of one end of the first pipe body 11 close to the third pipe body 31 is greater than or equal to the distance f between the third retaining ring 33 and the end face of one end of the third pipe body 31 close to the first pipe body 11. The outer diameter g of the first retaining ring 12 is smaller than or equal to the inner diameter h of the internal thread 211. The outer diameter g of the first retaining ring 12 is greater than the inner diameter i of one end of the second pipe joint 3 close to the first pipe body 11 (equal to the inner diameter c of one end of the third pipe body 31 close to the first pipe body 11). The outer diameter g of the first retaining ring 12 is greater than the inner diameter j of the second retaining ring 22, and the inner diameter j of the second retaining ring 22 is greater than or equal to the outer diameter k of one end of the first pipe body 11 away from the third pipe body 31.
[0052] This embodiment also provides a high and low temperature test system, which includes a refrigeration main unit, a test chamber, and a quick-release pipe connection structure. The connection pipe of the refrigeration main unit is connected to the connection pipe of the test chamber through the quick-release pipe connection structure. Among them, metal hose parts can be provided on the connection pipes of the refrigeration main unit and the test chamber. For example, a section of metal hose can be arranged on the connection pipe connected to the evaporator in the test chamber, which can adjust and offset the errors generated when the test chamber is connected to the refrigeration main unit. At the same time, it can prevent the vibration during the operation of the refrigeration main unit from being transmitted to the test chamber. The assembly process of the quick-release pipe connection structure and the high and low temperature test system provided by the embodiment of the present utility model:
[0053] 1. Insert one end of the first pipe joint 1 for the connection pipe from the side of the sleeve 2 provided with the internal thread 211, pass through the sleeve 2, and then connect the first pipe joint 1 to the pipe;
[0054] 2. Connect the second pipe joint 3 to the pipe;
[0055] 3. Screw the external thread 311 of the second pipe joint 3 with the internal thread 211 of the sleeve 2 to complete the assembly of the quick-release pipe connection structure and the connection of the two pipes.
[0056] The beneficial effects of the quick-release pipe connection structure provided by the embodiment of the present utility model include:
[0057] 1. The external thread 311 on the second pipe joint 3 cooperates with the internal thread 211 on the second pipe body 21, and the first retaining ring 12 is restricted between the second retaining ring 22 and the second pipe joint 3, so as to realize the connection between the first pipe joint 1 and the second pipe joint 3. Only by rotating the sleeve 2 can the connection and disassembly of the first pipe joint 1 and the second pipe joint 3 be realized, and the operation is convenient;
[0058] 2. During the process of connecting and disassembling the first pipe joint 1 and the second pipe joint 3, only the sleeve 2 rotates, and other components (including the first pipe joint 1, the second pipe joint 3, and the two connected pipes) do not need to rotate, and it will not cause twisting damage to the two pipes;
[0059] 3. The first retaining ring 12 is restricted between the second retaining ring 22 and the second pipe joint 3, and there is a certain shaking space for the first retaining ring 12. Even if the first pipe joint 1 shakes relative to the second pipe joint 3, the first pipe joint 1 will not be separated from the second pipe joint 3, and it will also reduce the extrusion force between the components and reduce the risk of damage to each component;
[0060] 4. The high and low temperature test system provided by this embodiment is designed in a modular manner. The refrigeration main unit and the test chamber are designed and produced as independent modules. The evaporator of the refrigeration main unit is independent of the test chamber and is combined through the quick-release pipe connection structure to realize the functions of separate transportation and assembly of the refrigeration main unit and the test chamber.
[0061] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. For those skilled in the art, the present utility model may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A quick-release pipe connection structure, characterized in that, The quick-release pipe connection structure includes a first pipe joint (1), a sleeve (2), and a second pipe joint (3); The first pipe joint (1) includes a first pipe body (11) and a first retaining ring (12). The first pipe body (11) is used to be connected to the end of a pipe, and the first retaining ring (12) is arranged on the outer peripheral surface of the first pipe body (11); The sleeve (2) includes a second pipe body (21) and a second retaining ring (22). An internal thread (211) is arranged on the inner surface at one end of the second pipe body (21), and the second retaining ring (22) is arranged on the inner surface at the other end of the second pipe body (21); The second pipe joint (3) is used to be connected to the end of another pipe, and an external thread (311) is arranged on the second pipe joint (3); Wherein, after the external thread (311) on the second pipe joint (3) is engaged with the internal thread (211) on the second pipe body (21), the first retaining ring (12) is restricted between the second retaining ring (22) and the second pipe joint (3).
2. The quick-release pipe connection structure according to claim 1, wherein, The second pipe joint (3) includes a third pipe body (31) and an end ring (32). The external thread (311) is arranged on the outer surface at one end of the third pipe body (31), and the end ring (32) is arranged at the other end of the third pipe body (31).
3. The quick-release pipe connection structure according to claim 2, wherein, The second pipe joint (3) further includes a third retaining ring (33). The third retaining ring (33) is arranged on the inner surface of the third pipe body (31), and the third retaining ring (33) is used to restrict the first pipe body (11) from passing through the third pipe body (31).
4. The quick-release pipe connection structure according to claim 3, wherein The inner diameter a of the third retaining ring (33) is smaller than the outer diameter b of the end of the first pipe body (11) close to the third pipe body (31).
5. The quick-release pipe connection structure according to claim 4, characterized in that, The inner diameter c of the end of the third pipe body (31) close to the first pipe body (11) is greater than or equal to the outer diameter b of the end of the first pipe body (11) close to the third pipe body (31), and the end of the first pipe body (11) close to the third pipe body (31) is inserted into the third pipe body (31).
6. The quick-release pipe connection structure according to claim 5, wherein, The distance e between the first retaining ring (12) and the end face of the first pipe body (11) close to the third pipe body (31) is greater than or equal to the distance f between the third retaining ring (33) and the end face of the third pipe body (31) close to the first pipe body (11).
7. The quick-release pipe connection structure according to claim 6, wherein The quick-release pipe connection structure further includes a sealing washer, and the sealing washer is clamped between the end of the first pipe body (11) close to the third pipe body (31) and the third retaining ring (33).
8. The quick-release pipe connection structure according to claim 2, characterized in that, The outer diameter g of the first retaining ring (12) is smaller than or equal to the inner diameter h of the internal thread (211), the outer diameter g of the first retaining ring (12) is greater than the inner diameter i of the end of the second pipe joint (3) close to the first pipe body (11), the outer diameter g of the first retaining ring (12) is greater than the inner diameter j of the second retaining ring (22), and the inner diameter j of the second retaining ring (22) is greater than or equal to the outer diameter k of the end of the first pipe body (11) away from the third pipe body (31).
9. The quick-release pipe connection structure according to claim 2, characterized in that, The outer peripheral surfaces of the second tube body (21) and the end ring (32) are regular polygons.
10. A high and low temperature test system, characterized in that, The high and low temperature test system includes a refrigeration main unit, a test chamber, and the quick-release tube connection structure according to claim 1. An evaporator is arranged in the test chamber. One end of the quick-release tube connection structure is fixedly connected to the refrigeration main unit, and the other end is movably connected to the pipeline of the evaporator through a metal hose.