Pipeline connecting structure and air conditioning system
By using the connecting head and connecting sleeve in the connecting unit in the pipe connection structure to clamp the connecting part of the connecting pipe, the problem of complex and high cost in the prior art welding process is solved, and the tight connection and seal between the connecting pipes is achieved, which reduces the cost and improves reliability.
Patent Information
- Application Number
- CN202422023702.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-20
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-08-20
AI Technical Summary
In the existing pipeline connection structure, a complex and costly welding process is required between the other connector and the connector, which leads to difficulty in disassembly and repair.
Using a pipe connection structure including a first connection, a second connection and a connection unit, the first connection and the second connection are clamped through the connecting head and a connection sleeve in the connection unit to realize the connection and seal between the connections, and the welding process is cancelled.
A tight connection and seal between the connectors is achieved, reducing costs, simplifying the disassembly and maintenance process, and improving the reliability of the connection.
Smart Images
Figure CN222864404U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of pipeline connection, and in particular to a pipeline connection structure and an air conditioning system. Background Art
[0002] In air conditioning systems, the connection between pipes is often achieved through a pipe connection structure. The pipe connection structure includes a connector, a threaded sleeve, and two pipes. One pipe is abutted against the connector through the expansion of the end and then locked through the threaded connection between the threaded sleeve and the connector. The other pipe is welded and fixed to the connector, thereby achieving the connection between the two pipes.
[0003] However, in the existing pipeline connection structure, a welding process is required between the other pipe and the connector, and the welding process is relatively complex and costly, which is not conducive to disassembly. Utility Model Content
[0004] Based on this, it is necessary to provide a pipeline connection structure and an air conditioning system to solve the above-mentioned problems existing in the existing pipeline connection.
[0005] The present application provides a pipeline connection structure, which includes a first connecting pipe, a second connecting pipe and a connecting unit, wherein the first connecting pipe is connected to the second connecting pipe through the connecting unit; a first connecting portion is provided at one end of the first connecting pipe, and a second connecting portion is provided at one end of the second connecting pipe, and the connecting unit includes a connecting head and a connecting sleeve, wherein the connecting head is sleeved on a portion of the outer circumference of the first connecting pipe and abuts with the first connecting portion; the connecting sleeve is sleeved on a portion of the outer circumference of the second connecting pipe and the connecting head and is threadedly connected to the connecting head, and the connecting sleeve abuts with the second connecting portion; wherein, as the connecting sleeve moves toward the connecting head, the connecting head and the connecting sleeve can clamp the first connecting portion and the second connecting portion so that the first connecting portion and the second connecting portion abut.
[0006] In one embodiment, the first connecting portion is provided with a first sealing surface, the second connecting portion is provided with a second sealing surface, and the first sealing surface and the second sealing surface are tightly fitted.
[0007] In one embodiment, one or both of the first sealing surface and the second sealing surface are provided with a protrusion; when the first sealing surface and the second sealing surface are in contact with each other, the protrusion can be embedded in the first sealing surface or the second sealing surface to achieve line sealing.
[0008] In one embodiment, a third sealing surface is provided at one end of the first connecting portion away from the first sealing surface, a fourth sealing surface is provided at one end of the second connecting portion away from the second sealing surface, and the connecting unit is provided with a first mating surface and a second mating surface; wherein the third sealing surface is tightly fitted with the first mating surface, and the fourth sealing surface is tightly fitted with the second mating surface.
[0009] In one embodiment, the first connection portion extends outwardly of the first connecting pipe and is perpendicular to the axis of the first connecting pipe, and the second connection portion extends outwardly of the second connecting pipe and is perpendicular to the axis of the second connecting pipe.
[0010] In one of the embodiments, the connecting sleeve includes a main body and a stopper portion that are interconnected, the main body is threadedly connected to the connecting head, the stopper is sleeved on the outer periphery of the second connecting pipe and cooperates with the second connecting portion along the axial stopper; the first connecting portion cooperates with one end of the connecting head extending into the connecting sleeve cavity along the axial stopper.
[0011] In one embodiment, at least part of the outer circumference of the connecting head and the connecting sleeve is provided with an operating portion, and the operating portion includes at least two operating surfaces arranged radially opposite to each other; wherein the operating surfaces are used to abut and cooperate with an external tool to tighten the connecting head and the connecting sleeve.
[0012] In one embodiment, the hardness of the first connecting pipe, the first connecting portion, the second connecting pipe and the second connecting portion is smaller than the hardness of the connecting unit.
[0013] In one embodiment, the first connecting pipe, the first connecting portion, the second connecting pipe and the second connecting portion are copper parts, and the connecting unit is a brass part.
[0014] The present application also provides an air-conditioning system, which includes the pipeline connection structure described in any one of the above embodiments.
[0015] Compared with the prior art, the pipe connection structure and air conditioning system provided by the present application can not only realize the connection between the first pipe and the second pipe, but also ensure the sealing between the first pipe and the second pipe, because the first connection part and the second connection part can be tightly fitted under the action of the connection unit. That is, the sealing effect can be achieved only by physical tightening, eliminating the traditional welding process, low cost and easy maintenance. In addition, the direct fitting of the first connection part and the second connection part can reduce the probability of the first pipe being offset relative to the second pipe, thereby ensuring the coaxiality of the first pipe and the second pipe, which is conducive to improving the reliability of the overall connection. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0017] Figure 1 A schematic diagram of a pipeline connection structure according to an embodiment of the present application;
[0018] Figure 2 A cross-sectional view of a pipeline connection structure according to an embodiment of the present application.
[0019] The symbols in the figure mean the following:
[0020] 100. Pipe connection structure; 10. First connecting pipe; 11. First connecting part; 111. First sealing surface; 112. Third sealing surface; 20. Second connecting pipe; 21. Second connecting part; 211. Second sealing surface; 212. Fourth sealing surface; 30. Connecting unit; 301. First mating surface; 302. Second mating surface; 31. Connecting head; 311. Operating part; 3111. Operating surface; 32. Connecting sleeve; 321. Main body; 322. Stopper. DETAILED DESCRIPTION
[0021] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0022] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.
[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0024] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are in contact indirectly through an intermediate medium. Moreover, a first feature being “above”, “above”, or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0025] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.
[0026] In air conditioning systems, the connection between pipes is often achieved through a pipe connection structure. The pipe connection structure includes a connector, a threaded sleeve, and two pipes. One pipe is abutted against the connector through the expansion of the end and then locked through the threaded connection between the threaded sleeve and the connector. The other pipe is welded and fixed to the connector, thereby achieving the connection between the two pipes.
[0027] However, in the existing pipeline connection structure, a welding process is required between the other pipe and the connector, and the welding process is relatively complex and costly, which is not conducive to disassembly.
[0028] See also Figure 1 and Figure 2 The present application provides a pipe connection structure 100, which is mainly used in an air-conditioning system to solve the problem that the pipe connection structure 100 has high cost and is difficult to disassemble and repair.
[0029] Specifically, the pipe connection structure 100 provided in the present application includes a first pipe 10, a second pipe 20 and a connection unit 30, wherein the first pipe 10 is connected to the second pipe 20 through the connection unit 30. A first connection portion 11 is provided at one end of the first pipe 10, and a second connection portion 21 is provided at one end of the second pipe 20. The connection unit 30 includes a connector 31 and a connector sleeve 32, wherein the connector 31 is sleeved on a portion of the outer periphery of the first pipe 10 and abuts against the first connection portion 11. The connector sleeve 32 is sleeved on a portion of the outer periphery of the second pipe 20 and the connector 31 and is threadedly connected to the connector 31, and the connector sleeve 32 abuts against the second connection portion 21. As the connector sleeve 32 moves toward the connector 31, the connector 31 and the connector sleeve 32 can clamp the first connection portion 11 and the second connection portion 21, so that the first connection portion 11 and the second connection portion 21 abut against each other.
[0030] It is understandable that, since the first connection portion 11 and the second connection portion 21 can be closely fitted under the action of the connection unit 30, not only can the connection between the first pipe 10 and the second pipe 20 be achieved, but also the sealing between the first pipe 10 and the second pipe 20 can be ensured. That is, the sealing effect can be achieved only by physical tightening, eliminating the traditional welding process, low cost and easy maintenance. In addition, the direct fit of the first connection portion 11 and the second connection portion 21 can reduce the probability of the first pipe 10 being offset relative to the second pipe 20, thereby ensuring the coaxiality of the first pipe 10 and the second pipe 20, which is conducive to improving the reliability of the overall connection.
[0031] Specifically, in this embodiment, the first connection portion 11 and the first connecting pipe 10 are an integrated structure, that is, the first connection portion 11 can be formed by flanging the end of the first connecting pipe 10. Similarly, the second connection portion 21 and the second connecting pipe 20 are also an integrated structure, wherein the second connection portion 21 can be formed by flanging the end of the second connecting pipe 20. In this way, the connection strength between the first connection portion 11 and the first connecting pipe 10, and between the second connection portion 21 and the second connecting pipe 20 is greatly improved.
[0032] However, the present invention is not limited thereto. In other embodiments, the first connection portion 11 and the first connecting pipe 10, and the second connection portion 21 and the second connecting pipe 20 may also be fixedly connected by welding or the like, and the specific configuration may be reasonable according to actual needs.
[0033] In one embodiment, if Figure 2 As shown, the first connection part 11 is provided with a first sealing surface 111, and the second connection part 21 is provided with a second sealing surface 211, and the first sealing surface 111 and the second sealing surface 211 are closely fitted. In this way, the first connection part 11 and the second connection part 21 have a larger contact area, thereby improving the sealing effect between the first connection part 11 and the second connection part 21.
[0034] Furthermore, in one embodiment, a protrusion (not shown) is provided on one or both of the first sealing surface 111 and the second sealing surface 211. When the first sealing surface 111 and the second sealing surface 211 are in contact with each other, the protrusion can be embedded in the first sealing surface 111 or the second sealing surface 211 to achieve line sealing. In this way, the sealing performance of the first sealing surface 111 and the second sealing surface 211 when in contact with each other is further improved.
[0035] In one embodiment, a third sealing surface 112 is provided at one end of the first connection portion 11 away from the first sealing surface 111, a fourth sealing surface 212 is provided at one end of the second connection portion 21 away from the second sealing surface 211, and a first mating surface 301 and a second mating surface 302 are provided at the connection unit 30. The third sealing surface 112 is tightly fitted with the first mating surface 301, and the fourth sealing surface 212 is tightly fitted with the second mating surface 302. In this way, the contact area between the connection unit 30 and the first connection portion 11 and the second connection portion 21 is effectively increased, thereby improving the sealing effect between the connection unit 30 and the first connection portion 11 and the second connection portion 21.
[0036] In one embodiment, if Figure 2 As shown, the first connection portion 11 extends outward from the first connecting pipe 10 and is perpendicular to the axis of the first connecting pipe 10, and the second connection portion 21 extends outward from the second connecting pipe 20 and is perpendicular to the axis of the second connecting pipe 20. In this way, the fit between the first connecting portion 11 and the second connecting portion 21 is more stable, which can effectively reduce the probability of deviation when the first connecting pipe 10 and the second connecting pipe 20 are connected.
[0037] It can be understood that after the first connecting pipe 10 and the second connecting pipe 20 are connected via the connecting unit 30 , the axis of the first connecting pipe 10 is coaxially arranged with the axis of the second connecting pipe 20 .
[0038] In one embodiment, if Figure 2 As shown, the connecting sleeve 32 includes a main body 321 and a stopper 322 connected to each other, the main body 321 is threadedly connected to the connecting head 31, and the stopper 322 is sleeved on the outer periphery of the second connecting pipe 20 and axially stops with the second connecting portion 21. The first connecting portion 11 and the end of the connecting head 31 extending into the cavity of the connecting sleeve 32 are axially stopped.
[0039] In this way, during the process of threaded locking of the connecting sleeve 32 and the connecting head 31, the first connecting pipe 10 and the second connecting pipe 20 can be limited to prevent the first connecting pipe 10 and the second connecting pipe 20 from being separated, thereby greatly improving the connection efficiency and connection reliability.
[0040] Among them, the end surface of the connecting head 31 close to one end of the connecting sleeve 32 forms a first mating surface 301, and the end surface of the stopper 322 close to one end of the connecting head 31 forms a second mating surface 302. The first mating surface 301 and the second mating surface 302 are both perpendicular to the axis of the first connecting pipe 10 and the second connecting pipe 20.
[0041] During the locking process of the connecting sleeve 32 and the connecting head 31, a force is applied to the first connecting part 11 and the second connecting part 21 to move closer to each other, so that the first connecting part 11 and the second connecting part 21 are closely fitted. At this time, the first connecting part 11 and the first connecting pipe 10 can be in a stable vertical relationship, and the second connecting part 21 and the second connecting pipe 20 can also be in a stable vertical relationship. Therefore, when processing the first connecting part 11 and the second connecting part 21, there is no need to directly process them into a vertical state, so that the processing accuracy can be reduced, and then the processing difficulty and processing cost can be reduced.
[0042] In order to achieve deformation and fit of the first connection part 11 and the second connection part 21 during the threaded connection process of the connection sleeve 32 and the connection head 31, and prevent the connection unit 30 from being deformed, in one embodiment, the hardness of the first connecting pipe 10, the first connecting part 11, the second connecting pipe 20 and the second connecting part 21 is less than the hardness of the connection unit 30. In this way, the first connecting part 11 and the second connecting part 21 are deformed by force, and fit better, thereby further improving the sealing effect.
[0043] Specifically, in this embodiment, the first connecting pipe 10, the first connecting portion 11, the second connecting pipe 20 and the second connecting portion 21 are copper parts, and the connecting unit 30 is a brass part. However, it is not limited thereto, and in other embodiments, they can also be set as aluminum parts or aluminum alloy parts according to actual needs.
[0044] In one embodiment, if Figure 1 As shown, at least part of the outer circumference of the connector 31 and the connector sleeve 32 is provided with an operating portion 311, and the operating portion 311 includes at least two operating surfaces 3111 arranged opposite to each other in the radial direction. The operating surface 3111 is used to abut and cooperate with an external tool to tighten the connector 31 and the connector sleeve 32. Here, the external tool can usually be a wrench.
[0045] It is understandable that by providing two operating surfaces 3111 arranged opposite to each other, it is convenient to cooperate with the corresponding structure on the wrench, provide a force point, and facilitate the connection between the connecting sleeve 32 and the connecting head 31. Specifically, when assembling the connecting head 31 and the connecting sleeve 32, one wrench can be used to cooperate with the operating portion 311 on the connecting head 31 to achieve fixation, and then another wrench can be used to cooperate with the operating portion 311 on the connecting sleeve 32 to apply torque to the connecting sleeve 32 for tightening.
[0046] Furthermore, the number of the operating parts 311 can be set to be multiple to further reduce the difficulty of matching with the wrench. For example, in this embodiment, the operating surfaces 3111 of the multiple operating parts 311 on the connecting head 31 or the connecting sleeve 32 are adjacent along the circumferential direction to form a hexagonal structure.
[0047] The present application also provides an air conditioning system, which includes the pipeline connection structure 100 of any one of the above embodiments.
[0048] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0049] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of patent protection of the present application shall be subject to the attached claims.
Claims
1. A pipeline connection structure, comprising a first connecting pipe (10), a second connecting pipe (20) and a connecting unit (30), wherein the first connecting pipe (10) is connected to the second connecting pipe (20) via the connecting unit (30); It is characterized in that A first connecting portion (11) is provided at one end of the first connecting pipe (10), a second connecting portion (21) is provided at one end of the second connecting pipe (20), the connecting unit (30) comprises a connecting head (31) and a connecting sleeve (32), the connecting head (31) is sleeved on a portion of the outer circumference of the first connecting pipe (10), and is in abutment with the first connecting portion (11); the connecting sleeve (32) is sleeved on a portion of the outer circumference of the second connecting pipe (20) and the connecting head (31), and is threadedly connected to the connecting head (31), and the connecting sleeve (32) is in abutment with the second connecting portion (21); Wherein, as the connecting sleeve (32) moves toward the connecting head (31), the connecting head (31) and the connecting sleeve (32) are capable of clamping the first connecting portion (11) and the second connecting portion (21) so that the first connecting portion (11) and the second connecting portion (21) are in abutment with each other.
2. The pipeline connection structure according to claim 1, characterized in that: The first connecting portion (11) is provided with a first sealing surface (111), and the second connecting portion (21) is provided with a second sealing surface (211), and the first sealing surface (111) and the second sealing surface (211) are tightly fitted.
3. The pipeline connection structure according to claim 2, characterized in that: One or both of the first sealing surface (111) and the second sealing surface (211) are provided with a protrusion; When the first sealing surface (111) and the second sealing surface (211) are in contact with each other, the protrusion can be embedded in the first sealing surface (111) or the second sealing surface (211) to achieve line sealing.
4. The pipeline connection structure according to claim 2, characterized in that: A third sealing surface (112) is provided at one end of the first connecting portion (11) away from the first sealing surface (111), a fourth sealing surface (212) is provided at one end of the second connecting portion (21) away from the second sealing surface (211), and the connecting unit (30) is provided with a first mating surface (301) and a second mating surface (302); The third sealing surface (112) is tightly fitted with the first matching surface (301), and the fourth sealing surface (212) is tightly fitted with the second matching surface (302).
5. The pipeline connection structure according to any one of claims 1 to 4, characterized in that: The first connecting portion (11) extends outwardly of the first connecting pipe (10) and is perpendicular to the axis of the first connecting pipe (10), and the second connecting portion (21) extends outwardly of the second connecting pipe (20) and is perpendicular to the axis of the second connecting pipe (20).
6. The pipeline connection structure according to claim 5, characterized in that: The connecting sleeve (32) comprises a main body (321) and a stopper (322) which are connected to each other, the main body (321) is threadedly connected to the connecting head (31), and the stopper (322) is sleeved on the outer periphery of the second connecting pipe (20) and cooperates with the second connecting portion (21) along the axial stopper; The first connecting portion (11) is matched with an end of the connecting head (31) extending into the cavity of the connecting sleeve (32) along the axial stop.
7. The pipeline connection structure according to any one of claims 1 to 4 or claim 6, characterized in that: At least part of the outer circumference of the connecting head (31) and the connecting sleeve (32) is provided with an operating portion (311), and the operating portion (311) comprises at least two operating surfaces (3111) arranged opposite to each other in a radial direction; Wherein, the operating surface (3111) is used to abut and cooperate with an external tool to tighten the connecting head (31) and the connecting sleeve (32).
8. The pipeline connection structure according to any one of claims 1 to 4 or claim 6, characterized in that: The hardness of the first connecting pipe (10), the first connecting portion (11), the second connecting pipe (20) and the second connecting portion (21) is smaller than the hardness of the connecting unit (30).
9. The pipeline connection structure according to claim 8, characterized in that: The first connecting pipe (10), the first connecting portion (11), the second connecting pipe (20) and the second connecting portion (21) are copper parts, and the connecting unit (30) is a brass part.
10. An air conditioning system, characterized in that: It comprises a pipeline connection structure as described in any one of claims 1 to claim 9.