Copper pipe assembly

Abstract

The utility model discloses a copper pipe assembly which comprises a copper pipe body which comprises a straight pipe and a U-shaped bent pipe, and the U-shaped bent pipe and the straight pipe are sequentially connected in an end-to-end mode. Outer connectors are arranged at the two ends of the U-shaped bent pipe, step grooves are formed between the outer connectors and the pipe ends of the U-shaped bent pipe, a positioning ring is arranged on the straight pipe, a lock cap is in threaded connection with the positioning ring, and an outer expansion part in threaded connection with the outer connectors in a matched mode is arranged on the lock cap; the pipe end of the straight pipe extends into the outer connector and abuts against the step face of the step groove, the positioning ring blocks the gap between the outer connector and the straight pipe, and the lock nut is in threaded connection with the outer connector so that the straight pipe can be detachably connected with the U-shaped bent pipe in a limited mode. The device is novel in structure and easy to disassemble and assemble, the damaged pipeline can be replaced independently, and the maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of air-conditioning pipelines, and in particular relates to a copper pipe assembly. Background Art

[0002] Existing large-scale air-conditioning units mainly include refrigeration accessories, water pumps, fans and connecting pipes. The connecting pipes are mainly made of copper pipes. In order to save space, the copper pipes are usually bent back and forth to divide them into straight pipe sections and curved pipe sections. The following problems will arise: when a part of the copper pipe is damaged, it cannot be replaced separately, and the cost of replacing the entire pipe is high.

[0003] The existing patent document (publication number: CN221300462U) discloses a "connecting copper tube for a refrigeration system valve body", which also has the above-mentioned technical problems. Summary of the invention

[0004] The utility model aims to solve the above technical problems existing in the prior art and provides a copper tube assembly with novel structure, simple assembly and disassembly, and damaged pipes can be replaced separately, thus reducing maintenance costs.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A copper tube assembly comprises: a copper tube body, the copper tube body comprises a straight tube and a U-shaped bend tube, the U-shaped bend tube and the straight tube are connected end to end in sequence; the characteristics are: both ends of the U-shaped bend tube are provided with external interfaces, a step groove is formed between the external interface and the tube end of the U-shaped bend tube, a positioning ring is provided on the straight tube, a locking cap is screwed on the positioning ring, and the locking cap is provided with an expansion part screwed with the external interface; the tube end of the straight tube extends into the external interface and contacts the step surface of the step groove, the positioning ring blocks the gap between the external interface and the straight tube, and the locking cap is screwed on the external interface, so that the straight tube can be detachably limited and connected to the U-shaped bend tube. The copper tube assembly has a novel structure, is easy to disassemble and assemble, and damaged pipelines can be replaced separately, reducing maintenance costs.

[0007] Furthermore, a limit bracket is provided between two adjacent straight tubes, and the limit bracket includes a central sleeve, a support rod and a C-shaped block. The support rod is screwed to both ends of the central sleeve, and the C-shaped block is rotatably connected to one end of the support rod, and the C-shaped block is adapted to the straight tube. The limit bracket can limit the relative movement between the two adjacent straight tubes, and each straight tube is restrained as a whole, thereby improving the overall structural stability; the support rod is rotated inside and outside to change the spacing between the two C-shaped blocks to adapt to the actual spacing between the two adjacent straight tubes, and the applicability is strong.

[0008] Furthermore, a sealing ring is embedded in the external interface, and the inner diameter of the sealing ring is adapted to the outer diameter of the straight pipe; the end of the straight pipe is inserted into the sealing ring and contacts the step surface of the step groove, and the positioning ring prevents the sealing ring from freely escaping from the external interface. The inner wall of the sealing ring is in close contact with the outer wall of the end of the straight pipe, and there is a large friction force, so the straight pipe is not easy to freely escape from the external interface, and the gap between the sealing ring and the straight pipe is very small, so leakage is not easy to occur there, and the problem of dimensional error between the external interface and the straight pipe is solved, and the requirements for manufacturing accuracy are reduced; after the docking is completed, the positioning ring blocks the external interface, preventing the sealing ring from freely escaping from the external interface, ensuring the installation reliability of the sealing ring, and the sealing ring can be disassembled and replaced, which is flexible and convenient.

[0009] Furthermore, the inner wall of the copper tube body is coated with a galvanized layer, which improves the corrosion resistance of the copper tube body. The inner wall is not easy to corrode and rust, and has a long service life.

[0010] Furthermore, the outer interface is fixed to the U-shaped elbow by welding, thereby ensuring the connection strength between the outer interface and the U-shaped elbow.

[0011] Furthermore, the positioning ring is fixed to the straight pipe by welding, thereby ensuring the connection strength between the positioning ring and the U-shaped bent pipe.

[0012] The utility model has the following beneficial effects due to the adoption of the above technical solution:

[0013] 1. When docking, insert the end of the straight pipe into the sealing ring and contact the step surface of the step groove. At this time, the positioning ring blocks the external interface, and then turn the locking cap to screw the external expansion part and the external interface. The straight pipe and the U-shaped bend cannot be separated freely, the connection is reliable, the docking is simple, and the disassembly is convenient. The damaged pipeline can be replaced separately, which reduces the maintenance cost.

[0014] 2. The inner wall of the sealing ring is in close contact with the outer wall of the straight pipe end, and there is a large friction force. The straight pipe is not easy to freely escape from the external interface, and the gap between the sealing ring and the straight pipe is very small, so leakage is not easy to occur at this place, and the problem of dimensional error between the external interface and the straight pipe is solved, and the requirements for manufacturing accuracy are reduced; the positioning ring blocks the external interface to prevent the refrigerant from leaking outward, and multiple anti-seepage designs are reliable to use. The positioning ring prevents the sealing ring from freely escaping from the external interface, ensuring the installation reliability of the sealing ring. The sealing ring can be disassembled and replaced, which is flexible and convenient.

[0015] 3. The limit bracket can limit the relative movement between two adjacent straight pipes, and each straight pipe is restrained into one body, which improves the overall structural stability; the internal and external rotating support rod can change the distance between the two C-shaped blocks to adapt to the actual distance between two adjacent straight pipes, and has strong applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings:

[0017] Figure 1 This is a schematic structural diagram of the first embodiment of the present utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the U-shaped elbow in Example 1;

[0019] Figure 3 This is a schematic diagram of the structure of the connection between the straight tube and the locking cap in Example 1;

[0020] Figure 4 It is a structural schematic diagram of the lock cap in the first embodiment;

[0021] Figure 5 This is a schematic diagram of the structure of the second embodiment of the present utility model;

[0022] Figure 6 It is a schematic diagram of the structure of the limiting bracket in the second embodiment.

[0023] In the figure: 1-straight pipe; 2-U-shaped bent pipe; 3-external interface; 4-step groove; 5-sealing ring; 6-positioning ring; 7-locking cap; 8-outer expansion part; 9-limiting bracket; 10-center sleeve; 11-support rod; 12-C-type block; 13-convex seat. DETAILED DESCRIPTION

[0024] like Figures 1 to 4 As shown, this is an embodiment of the present utility model

[0025] A copper tube assembly includes: a copper tube body, the inner wall of which is coated with a galvanized layer, which improves the corrosion resistance of the copper tube body, makes the inner wall less prone to corrosion and rust, and has a long service life. The copper tube body includes a straight tube 1 and a U-shaped bent tube 2, and the U-shaped bent tube 2 is connected end to end with the straight tube 1 in sequence.

[0026] Both ends of the U-shaped bend pipe 2 are provided with external interfaces 3, and a step groove 4 is formed between the external interface 3 and the pipe end of the U-shaped bend pipe 2. A sealing ring 5 is embedded in the external interface 3, and the inner diameter of the sealing ring 5 is adapted to the outer diameter of the straight pipe 1. A positioning ring 6 is provided on the straight pipe 1, and a locking cap 7 is screwed on the positioning ring 6. The locking cap 7 is provided with an expansion part 8, and the inner wall of the expansion part 8 is provided with an internal thread, and the outer wall of the external interface 3 is provided with an external thread, so that the expansion part 8 and the external interface 3 are threadedly connected.

[0027] When docking, the pipe end of the straight pipe 1 is inserted into the sealing ring 5 and contacts the step surface of the step groove 4. At this time, the positioning ring 6 blocks the external interface 3, and then the locking cap 7 is rotated to screw the external expansion part 8 and the external interface 3 together. The straight pipe 1 and the U-shaped bent pipe 2 cannot be separated freely, the connection is reliable, the docking is simple, the disassembly is convenient, and the damaged pipeline can be replaced separately, which reduces the maintenance cost.

[0028] The inner wall of the sealing ring 5 is in close contact with the outer wall of the tube end of the straight tube 1, and there is a large friction force. The straight tube 1 is not easy to freely escape from the external interface 3, and the gap between the sealing ring 5 and the straight tube 1 is very small, so leakage is not easy to occur at this place, and the problem of dimensional error between the external interface 3 and the straight tube 1 is solved, and the requirements for manufacturing accuracy are reduced; the positioning ring 6 blocks the external interface 3 to prevent the refrigerant from leaking outward, and the anti-seepage design in multiple places is reliable to use, and the positioning ring 6 prevents the sealing ring 5 from freely escaping from the external interface 3, thereby ensuring the installation reliability of the sealing ring 5. The sealing ring 5 can be disassembled and replaced, which is flexible and convenient.

[0029] The external interface 3 is fixed to the U-shaped elbow 2 by welding, which ensures the connection strength between the external interface 3 and the U-shaped elbow 2. The external interface 3 can be made of stainless steel, which reduces the use cost.

[0030] The positioning ring 6 is welded and fixed to the straight pipe 1, which ensures the connection strength between the positioning ring 6 and the U-shaped bent pipe 2. The positioning ring 6 can be made of stainless steel, which reduces the use cost.

[0031] like Figure 5 and Figure 6 As shown, this is the second embodiment of the utility model

[0032] In the technical solution based on the first embodiment, a limit bracket 9 is provided between two adjacent straight tubes 1. The limit bracket 9 includes a central sleeve 10, a support rod 11 and a C-shaped block 12. The support rod 11 is screwed on both ends of the central sleeve 10. The boss 13 of the C-shaped block 12 is rotatably connected to the support rod 11, and the C-shaped block 12 is adapted to the straight tube 1.

[0033] When the C-shaped block 12 is sleeved over the straight tube 1, there will be no relative movement between the central sleeve 10 and the support rod 11, and the distance between the two C-shaped blocks 12 is fixed, so that the limit bracket 9 can simultaneously limit the relative movement between the two adjacent straight tubes 1, and each straight tube 1 is restrained as a whole, thereby improving the overall structural stability; by rotating the support rod 11 inward and outward, the distance between the two C-shaped blocks 12 can be changed to adapt to the actual distance between the two adjacent straight tubes 1, and the applicability is strong.

[0034] The above are only specific embodiments of the utility model, but the technical features of the utility model are not limited thereto. Any simple changes, equivalent replacements or modifications made based on the utility model to solve basically the same technical problems and achieve basically the same technical effects are all included in the protection scope of the utility model.

Claims

1. A copper tube assembly, comprising: A copper tube body, the copper tube body comprising a straight tube and a U-shaped bent tube, the U-shaped bent tube and the straight tube are connected end to end in sequence; Features: Both ends of the U-shaped bend pipe are provided with external interfaces, a step groove is formed between the external interfaces and the pipe ends of the U-shaped bend pipe, a positioning ring is provided on the straight pipe, a locking cap is screwed on the positioning ring, and an outer expansion part screwed with the external interface is provided on the locking cap; The pipe end of the straight pipe extends into the external interface and contacts the step surface of the step groove, the positioning ring blocks the gap between the external interface and the straight pipe, and the locking cap is screwed to the external interface to make the straight pipe detachably limited and connected to the U-shaped bend pipe.

2. A copper tube assembly according to claim 1, characterized in that: A limit bracket is provided between two adjacent straight tubes, and the limit bracket includes a central sleeve, a support rod and a C-shaped block. The support rod is screwed on both ends of the central sleeve, and the C-shaped block is rotatably connected to one end of the support rod. The C-shaped block is adapted to the straight tube.

3. A copper tube assembly according to claim 1, characterized in that: A sealing ring is embedded in the external interface, and the inner diameter of the sealing ring is adapted to the outer diameter of the straight pipe; the pipe end of the straight pipe penetrates into the sealing ring and contacts the step surface of the step groove, and the positioning ring prevents the sealing ring from freely escaping from the external interface.

4. A copper tube assembly according to claim 1, characterized in that: The inner wall of the copper tube body is coated with a zinc coating.

5. The copper tube assembly according to claim 1, characterized in that: The external interface is fixed to the U-shaped elbow by welding.

6. A copper tube assembly according to claim 1, characterized in that: The positioning ring is fixed to the straight pipe by welding.

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