A high-pressure resistant sealing type air conditioning pipe assembly

Abstract

The utility model discloses a kind of high-pressure-resistant sealing type air conditioning pipeline assembly components, it is related to air conditioning pipeline technical field, including transition hose, both ends of the transition hose are equipped with hose joint, one end of two groups of the hose joint is equipped with hard pipe joint, one end of two groups of the hard pipe joint is equipped with metal hard pipe, the transition hose is multilayer composite structure, including corrosion-resistant inner layer, metal corrugated barrier layer, bonding reinforcement layer, braided reinforcement layer and wear-resistant outer layer in order from inside to outside.The utility model, high-pressure-resistant performance is excellent: in the multilayer composite structure of transition hose, metal corrugated barrier layer and high-density braided reinforcement layer form high-pressure-resistant synergic system, cooperate the interlayer strengthening effect of bonding reinforcement layer;Hard pipe joint and the upsetting roll engagement connection of metal hard pipe and the auxiliary fastening of reinforcing clamp, make the pressure strength of connecting part improve, far more than traditional welding connection.

Description

Technical Field

[0001] This utility model relates to the field of air conditioning pipeline technology, and in particular to a high-pressure resistant, sealed air conditioning pipeline assembly. Background Technology

[0002] In air conditioning refrigeration systems, the piping assembly is the core carrier for refrigerant delivery, and its pressure resistance and sealing performance directly determine the operational stability and safety of the air conditioning system. Especially in fields such as air conditioning for new energy vehicles and large commercial central air conditioning systems, the piping inside the system needs to withstand high pressure during operation, and the refrigerants often have a certain degree of corrosiveness, which places even more stringent requirements on the high pressure resistance and sealing performance of the piping assembly.

[0003] However, existing air conditioning piping assemblies generally have the following key technical shortcomings, making them difficult to adapt to high-pressure and harsh working conditions: insufficient high-pressure resistance; traditional composite hoses mostly adopt a single-layer reinforced structure, with the layers only connected by simple bonding or shallow adhesion, which is prone to interlayer peeling under high-pressure cyclic loads; the rated working pressure is usually insufficient and cannot meet the requirements of high-pressure systems; at the same time, the welded connection between the rigid pipe and the joint is prone to forming weak points due to welding defects, which are prone to cracking under high pressure. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a high-pressure resistant, sealed air conditioning pipe assembly component.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a high-pressure resistant sealed air conditioning pipe assembly, including a transition hose, both ends of which are equipped with hose connectors, one end of each set of hose connectors is provided with a rigid pipe connector, one end of each set of rigid pipe connectors is provided with a metal rigid pipe, the transition hose is a multi-layer composite structure, which includes, from the inside out, a corrosion-resistant inner layer, a metal corrugated barrier layer, an adhesive reinforcement layer, a braided reinforcement layer and a wear-resistant outer layer.

[0006] Preferably, the outer wall of the corrosion-resistant inner layer is fixed to the inner wall of the metal corrugated barrier layer, the inner and outer walls of the adhesive reinforcement layer are in close contact with the outer wall of the metal corrugated barrier layer and the inner wall of the braided reinforcement layer, respectively, the outer wall of the metal corrugated barrier layer is fixed to the inner wall of the braided reinforcement layer, and the braided reinforcement layer is fixed to the inner wall of the wear-resistant outer layer.

[0007] Preferably, reinforcing clamps are installed at the connection points between the two sets of metal rigid pipes and the two sets of rigid pipe joints.

[0008] Preferably, a sealing ring is installed on one side of the inside of both sets of hose connectors, and a sealing groove is opened at one end of both sets of rigid pipe connectors.

[0009] Preferably, the two sets of sealing rings are respectively disposed inside the two sets of sealing grooves.

[0010] Preferably, the outer walls of both sets of rigid pipe joints are provided with external threads, and the inner walls of both sets of flexible pipe joints are provided with internal threads.

[0011] Preferably, a portion of each of the two sets of rigid pipe fittings is inserted into the interior of each of the two sets of flexible pipe fittings, and the two sets of external threads are threadedly connected to the two sets of internal threads.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, the high pressure resistance performance is excellent: In the multi-layer composite structure of the transition hose, the metal corrugated barrier layer and the high-density braided reinforcement layer form a high pressure resistance synergistic system, which is combined with the interlayer strengthening effect of the adhesive reinforcement layer; the upsetting and rolling engagement connection between the rigid pipe joint and the metal rigid pipe and the auxiliary fastening of the reinforced clamp improve the pressure resistance of the connection part, which is far superior to the traditional welding connection.

[0013] 2. This utility model has high sealing reliability: it adopts a dual sealing design of "threaded seal + lip seal". The thread engagement achieves initial sealing, and the lip seal generates a self-tightening effect under high pressure, making the sealing surface fit more tightly; the precise positioning of the sealing groove avoids the seal ring from shifting, improving the overall sealing reliability and effectively preventing refrigerant leakage. Attached Figure Description

[0014] Figure 1 A three-dimensional structural diagram of a high-pressure resistant, sealed air conditioning pipe assembly is provided for this utility model. Figure 2 This utility model provides an exploded structural diagram of the hose connector and metal rigid pipe of a high-pressure resistant sealed air conditioning pipe assembly. Figure 3 This utility model provides a partial structural diagram of a transition hose for a high-pressure resistant, sealed air conditioning pipe assembly. Figure 4 This utility model proposes a high-pressure resistant, sealed air conditioning pipe assembly. Figure 3 A magnified structural diagram of A in the diagram.

[0015] Legend: 1. Transition hose; 2. Hose connector; 3. Metal rigid pipe; 4. Rigid pipe connector; 6. Reinforcing clamp; 7. Sealing groove; 8. Sealing ring; 9. External thread; 10. Internal thread; 11. Corrosion-resistant inner layer; 12. Metal corrugated barrier layer; 13. Adhesive reinforcement layer; 14. Braided reinforcement layer; 15. Wear-resistant outer layer. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] Example 1: As Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, this utility model provides a high-pressure resistant sealed air conditioning pipe assembly, including a transition hose 1. Both ends of the transition hose 1 are equipped with hose connectors 2. One end of each set of hose connectors 2 is provided with a rigid pipe connector 4. One end of each set of rigid pipe connectors 4 is provided with a metal rigid pipe 3. The transition hose 1 has a multi-layer composite structure, which includes, from the inside to the outside, a corrosion-resistant inner layer 11, a metal corrugated barrier layer 12, an adhesive reinforcement layer 13, a braided reinforcement layer 14, and a wear-resistant outer layer 15. The outer wall of the corrosion-resistant inner layer 11 is fixed to the inner wall of the metal corrugated barrier layer 12. The inner and outer walls of the adhesive reinforcement layer 13 are in close contact with the outer wall of the metal corrugated barrier layer 12 and the inner wall of the braided reinforcement layer 14, respectively. The outer wall of the metal corrugated barrier layer 12 is fixed to the inner wall of the braided reinforcement layer 14. The braided reinforcement layer 14 is fixed to the inner wall of the wear-resistant outer layer 15.

[0019] The specific setup and function of this embodiment are described below. The main pipeline is centered on the transition hose 1, with metal rigid pipes 3 connected to both ends. The transition hose 1 adopts a multi-layer composite reinforced structure, consisting of a corrosion-resistant inner layer 11, a metal corrugated barrier layer 12, an adhesive reinforcement layer 13, a braided reinforcement layer 14, and a wear-resistant outer layer 15, from the inside out. Each layer is integrated through "mechanical interlocking + adhesive fixing". Specifically, the corrosion-resistant inner layer 11 is made of fluoroplastic material, which has excellent refrigerant corrosion resistance. Its outer wall is tightly fitted to the inner wall of the metal corrugated barrier layer 12 and fixed by hot pressing. The concave and convex structure of the metal corrugation increases the contact area between the two layers, improves the bonding stability, and prevents interlayer delamination caused by media penetration. The metal corrugated barrier layer 12 is made of 304 stainless steel, which ensures refrigerant barrier performance. It also gives the hose good flexibility; its outer wall is tightly connected to the braided reinforcement layer 14 through the bonding reinforcement layer 13 to form a high-pressure resistant synergistic structure; the bonding reinforcement layer 13 is made of epoxy resin adhesive, which can penetrate into the gaps of the outer wall of the metal corrugated barrier layer 12 and the fiber gaps of the braided reinforcement layer 14. After curing, the two layers are firmly bonded, effectively preventing interlayer separation under high pressure; the braided reinforcement layer 14 is made of copper-plated steel wire braided with a braiding density of not less than 90%, forming a mesh reinforcement structure, which can improve the rated working pressure of the transition hose 1; its outer wall is nested with the wear-resistant outer layer 15, and the pores of the braided mesh provide a reliable adhesion substrate for the outer layer; the wear-resistant outer layer 15 is made of polyurethane, which has excellent resistance to mechanical wear and aging, and can resist external force damage during installation and use, extending the service life of the hose.

[0020] Example 2: Figure 1 and Figure 2 As shown, reinforcing clamps 6 are installed at the connection points of the two sets of metal rigid pipes 3 and the two sets of rigid pipe joints 4; sealing rings 8 are installed on one side of the interior of the two sets of flexible hose joints 2, and sealing grooves 7 are opened at one end of the two sets of rigid pipe joints 4. The sealing rings 8 are respectively set inside the two sets of sealing grooves 7; the outer walls of the two sets of rigid pipe joints 4 are provided with external threads 9, and the inner walls of the two sets of flexible hose joints 2 are provided with internal threads 10. A portion of the two sets of rigid pipe joints 4 is inserted into the interior of the two sets of flexible hose joints 2, and the two sets of external threads 9 are threadedly connected to the two sets of internal threads 10.

[0021] The overall effect of this embodiment is as follows: the hose connector 2 is made of high-strength aluminum alloy. One end is an insertion section that is inserted into the transition hose 1. The outer wall of the insertion section has an annular protrusion that matches the corrugated groove of the metal corrugated barrier layer 12. The annular protrusion is embedded into the corrugated groove through a riveting process to form a mechanical engagement. The other end is a threaded connection section with an internal thread 10 on the inner wall to ensure a tight engagement with the rigid pipe connector 4. The rigid pipe connector 4 is made of stainless steel. One end is a butt joint section with an external thread 9 on the outer wall that matches the internal thread 10 of the hose connector 2. The other end is a connecting section. After assembly with the metal rigid pipe 3, it is formed by upsetting and rolling to create a sawtooth engagement structure on the mating surface, improving the connection strength. A sealing groove 7 is provided at the end of the butt joint section to provide an installation reference for the sealing component. The metal rigid pipe 3 is made of high-strength aluminum alloy with an anodized layer on the outer wall to improve corrosion resistance and wear resistance. After interference fit with the connecting section of the rigid pipe connector 4, it is fixed by upsetting and rolling. Sealing component structure: A dual sealing structure of "threaded seal + sealing ring 8" is adopted to ensure no leakage under high pressure. The sealing ring 8 is made of fluororubber with a trapezoidal cross-section and a lip-shaped sealing structure with a 30-45° inclined angle on the outer wall, which has good resistance to high and low temperatures and corrosion. It is installed in the mounting groove on one side of the hose connector 2 and is embedded in the sealing groove 7 of the rigid pipe connector 4 after assembly to achieve a reliable radial seal. The sealing groove 7 is opened at the end of the mating section of the rigid pipe connector 4, and its cross-sectional dimensions are adapted to the sealing ring 8 to ensure that the sealing ring 8 will not fall off after assembly and can generate a reasonable pre-compression. The groove wall is smooth to reduce wear on the sealing ring 8. When the external thread 9 of the rigid pipe connector 4 and the internal thread 10 of the hose connector 2 are engaged, polytetrafluoroethylene raw material tape is used as an auxiliary sealing material to fill the thread gap and form the first line of defense for sealing.

[0022] The reinforcing clamp 6 is made of stainless steel and has a split structure consisting of two semi-circular arc-shaped clamping plates. The inner wall of the clamping plates has anti-slip texture to increase the friction with the pipes and joints. The clamping plates have flange ears at both ends, which are fastened with bolts to avoid over-tightening and pipe deformation. The reinforcing clamp 6 is assembled at the upset joint of the rigid pipe joint 4 and the metal rigid pipe 3, covering the interlocking area to further strengthen the connection strength and prevent the joint surface from loosening under vibration.

[0023] The usage method and working principle of this device: Pretreatment of transition hose 1: Each layer of transition hose 1 is cured by composite molding process to ensure tight fixation between layers; hose connectors 2 are assembled at both ends. After the insertion section is inserted, radial riveting is performed by riveting equipment so that the annular protrusion is embedded in the corrugated groove of the metal corrugated barrier layer 12. Connecting the rigid pipe joint 4 to the metal rigid pipe 3: Insert the pipe section of the rigid pipe joint 4 into the metal rigid pipe 3, and form a sawtooth interlocking structure at the joint by an upsetting and rolling device; install a reinforcing clamp 6 at the joint, and tighten the bolts to complete the fastening; Sealing assembly: Insert the sealing ring 8 into the mounting groove of the hose connector 2, wrap PTFE tape around the external thread 9 of the rigid pipe connector 4, insert the mating section of the rigid pipe connector 4 into the hose connector 2, rotate and tighten to engage the threads, and at the same time ensure that the sealing ring 8 is embedded in the sealing groove 7.

[0024] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A high-pressure resistant, sealed air conditioning piping assembly, characterized in that: The system includes a transition hose (1), both ends of which are equipped with hose connectors (2). One end of each set of hose connectors (2) is provided with a rigid pipe connector (4), and one end of each set of rigid pipe connectors (4) is provided with a metal rigid pipe (3). The transition hose (1) is a multi-layer composite structure, which includes, from the inside out, a corrosion-resistant inner layer (11), a metal corrugated barrier layer (12), an adhesive reinforcement layer (13), a braided reinforcement layer (14), and a wear-resistant outer layer (15).

2. The high-pressure resistant sealed air conditioning pipe assembly according to claim 1, characterized in that: The outer wall of the corrosion-resistant inner layer (11) is fixed to the inner wall of the metal corrugated barrier layer (12). The inner and outer walls of the adhesive reinforcement layer (13) are in close contact with the outer wall of the metal corrugated barrier layer (12) and the inner wall of the braided reinforcement layer (14), respectively. The outer wall of the metal corrugated barrier layer (12) is fixed to the inner wall of the braided reinforcement layer (14). The braided reinforcement layer (14) is fixed to the inner wall of the wear-resistant outer layer (15).

3. The high-pressure resistant sealed air conditioning piping assembly according to claim 1, characterized in that: Reinforcing clamps (6) are installed at the connection points of the two sets of metal rigid pipes (3) and the two sets of rigid pipe joints (4).

4. The high-pressure resistant sealed air conditioning pipe assembly according to claim 1, characterized in that: Both sets of hose connectors (2) have a sealing ring (8) installed on one side inside, and both sets of rigid pipe connectors (4) have a sealing groove (7) at one end.

5. A high-pressure resistant, sealed air conditioning piping assembly according to claim 4, characterized in that: The two sets of sealing rings (8) are respectively set inside the two sets of sealing grooves (7).

6. The high-pressure resistant sealed air conditioning piping assembly according to claim 1, characterized in that: Both sets of rigid pipe joints (4) have external threads (9) on their outer walls, and both sets of flexible hose joints (2) have internal threads (10) on their inner walls.

7. A high-pressure resistant, sealed air conditioning piping assembly according to claim 6, characterized in that: A portion of each of the two sets of rigid pipe fittings (4) is inserted into the interior of each of the two sets of flexible hose fittings (2), and the two sets of external threads (9) are threadedly connected to the two sets of internal threads (10).

Images