Environment-friendly heat-resistant composite pipe

Abstract

The utility model relates to the technical field of composite pipes, in particular to an environment-friendly heat-resistant composite pipe which comprises an outer-layer pipeline, a protection assembly, a temperature-resistant assembly, a turbulent flow assembly and a connecting assembly, the protection assembly is arranged on the outer side of the outer-layer pipeline, the temperature-resistant assembly is arranged on the inner side of the outer-layer pipeline, and the turbulent flow assembly is arranged on the inner side of the temperature-resistant assembly. Two groups of connecting assemblies are arranged at one end of the outer-layer pipeline, the protection assembly comprises a metal sleeve, multiple groups of rotating shafts are arranged on the inner side of the metal sleeve, baffle plates are arranged on the outer sides of the rotating shafts, the baffle plates are rotationally connected with the rotating shafts, first grooves are formed in the inner sides of the baffle plates, and the first grooves are formed in the inner sides of the baffle plates. A second groove is formed in the outer side of the metal sleeve; according to the utility model, the heat-sensitive characteristic of the rubber spring is utilized, the heat dissipation area is automatically adjusted along with the temperature through the baffle plate unfolding mechanism, the self-adaptive temperature compensation for the environment temperature change is realized, the heat dissipation efficiency is improved, and high-temperature-resistant protection is provided for the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of composite pipe technology, and in particular to an environmentally friendly and heat-resistant composite pipe. Background Technology

[0002] Currently, most composite pipes on the market adopt a metal-plastic laminate structure or a single metal pipe. The outer layer usually uses galvanized steel pipe or aluminum alloy as a protective layer, and the inner layer uses plastic or thin-walled stainless steel as the channel for conveying the medium. This traditional structure can meet the basic fluid conveying needs at room temperature, but it has significant defects under high temperature conditions. When the temperature of the conveying medium increases, the difference in thermal expansion coefficients between the metal outer layer and the plastic inner layer will generate radial gaps, resulting in a decrease in heat transfer efficiency and a reduction in the overall compressive strength of the pipe.

[0003] In scenarios such as steam transportation in thermal power plants and high-temperature medium transmission in chemical plants, conventional composite pipes rely on the natural heat conduction of metal for heat dissipation. When the medium temperature rises, the existing flow guiding structure is difficult to adaptively adjust to temperature changes, making it difficult to meet industrial heat dissipation requirements.

[0004] Therefore, to address the above problems, an environmentally friendly heat-resistant composite pipe is proposed. Utilizing the thermosensitive properties of rubber springs, the heat dissipation area is automatically adjusted according to temperature through a baffle plate deployment mechanism, achieving adaptive temperature compensation for changes in ambient temperature, improving heat dissipation efficiency, and providing high-temperature protection for the pipeline. Utility Model Content

[0005] In order to overcome the problem that traditional composite tubes rely on the natural heat conduction of metal for heat dissipation during daily use, and that the existing flow guiding structure is unable to adaptively adjust to temperature changes when the medium temperature rises, thus failing to meet industrial heat dissipation requirements.

[0006] The technical solution of this utility model is as follows: an environmentally friendly heat-resistant composite pipe, comprising an outer pipe, a protective component, a temperature-resistant component, a flow-turbulence component, and a connecting component. The outer pipe is provided with a protective component on its outer side, a temperature-resistant component on its inner side, a flow-turbulence component on its inner side, and a connecting component at one end of the outer pipe. Two sets of connecting components are provided. The protective component includes a metal sleeve, a rotating shaft on the inner side of the metal sleeve, multiple sets of rotating shafts, and a baffle plate on the outer side of the rotating shaft. The baffle plate and the rotating shaft are rotatably connected. A first groove is formed on the inner side of the baffle plate, a second groove is formed on the outer side of the metal sleeve, a first connecting block is formed on the inner side of the first groove, a rubber spring is formed on one side of the first connecting block, a second connecting block is formed at one end of the rubber spring, and the second connecting block is located in the second groove. A first spiral guide plate is formed on the outer side of the baffle plate, and multiple sets of the first spiral guide plate are provided.

[0007] Preferably, when the ambient temperature of the composite pipe increases, the rubber spring expands due to thermal expansion and contraction. The expansion of the rubber spring causes multiple sets of baffles to unfold. After the baffles unfold, they form gaps with the pipe wall, increasing the heat dissipation area and enhancing heat dissipation through natural convection. The first spiral guide plate turbulentizes the airflow outside the pipe to form turbulence outside the pipe, improving the heat dissipation effect. Thus, dynamic heat dissipation of the composite pipe is achieved according to temperature changes.

[0008] Preferably, the heat-resistant component includes an inner pipe and a connecting groove, with the inner pipe located inside the outer pipe and the connecting groove located outside the inner pipe, between the outer pipe and the inner pipe.

[0009] Preferably, the heat-resistant component also includes a disc spring and a connecting metal plate, with the disc spring provided inside the connecting groove and the connecting metal plate provided at one end of the disc spring.

[0010] Preferably, the heat-resistant component includes a corrugated metal plate, and one end of the disc spring is provided with a connecting hook, with multiple sets of connecting hooks provided.

[0011] Preferably, the turbulence-inducing component includes a second spiral guide plate and a spiral guide groove, with the second spiral guide plate provided on the inner side of the inner pipe and the spiral guide groove opened on the inner side of the inner pipe.

[0012] Preferably, the connecting assembly includes a connecting pipe and a flange, with the connecting pipe located on the outside of the outer pipe and a flange located at one end of the connecting pipe.

[0013] Preferably, the connecting assembly also includes fixing bolts, with multiple sets of fixing bolts provided on the inner side of the flange.

[0014] The beneficial effects of this utility model are:

[0015] When the ambient temperature of the composite pipe increases, the rubber spring expands due to thermal expansion and contraction. This expansion causes multiple sets of baffles to deploy, creating gaps between the baffles and the pipe wall, increasing the heat dissipation area. Natural convection is used to enhance heat dissipation. The first spiral guide plate turbulentizes the airflow outside the pipe, creating turbulence and improving heat dissipation. This allows the composite pipe to dynamically dissipate heat according to temperature changes, providing adaptive temperature compensation to ambient temperature variations and improving heat dissipation efficiency. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of the environmentally friendly heat-resistant composite pipe of this utility model.

[0017] Figure 2 The diagram shown is a three-dimensional structural schematic of the first cross-section of the environmentally friendly heat-resistant composite pipe of this utility model.

[0018] Figure 3 The diagram shown is a two-dimensional structural schematic of the second cross-section of the environmentally friendly heat-resistant composite pipe of this utility model.

[0019] Figure 4 The diagram shown is a partial cross-sectional view of the environmentally friendly heat-resistant composite pipe of this utility model.

[0020] Figure 5 The diagram shown is a schematic diagram of the first planar cross-sectional structure of the environmentally friendly heat-resistant composite pipe of this utility model.

[0021] Figure 6 The diagram shown is a schematic diagram of the second planar cross-sectional structure of the environmentally friendly heat-resistant composite pipe of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 1. Outer pipe; 101. Metal sleeve; 102. Rotating shaft; 103. Baffle plate; 104. First groove; 105. Second groove; 106. First connecting block; 107. Rubber spring; 108. Second connecting block; 109. First spiral guide plate; 201. Inner pipe; 202. Connecting groove; 203. Disc spring; 204. Connecting metal sheet; 205. Corrugated metal plate; 206. Connecting hook; 301. Second spiral guide plate; 302. Spiral guide groove; 401. Connecting pipe; 402. Flange; 403. Fixing bolt. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Please see Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of an environmentally friendly heat-resistant composite pipe, comprising an outer pipe 1, a protective component, a temperature-resistant component, a flow-turbulence component, and a connecting component. The protective component is disposed on the outer side of the outer pipe 1, the temperature-resistant component is disposed on the inner side of the outer pipe 1, and the flow-turbulence component is disposed on the inner side of the temperature-resistant component. A connecting component is disposed at one end of the outer pipe 1, and two sets of connecting components are provided. The protective component includes a metal sleeve 101, a rotating shaft 102 disposed on the inner side of the metal sleeve 101, multiple sets of rotating shafts 102, and a baffle plate disposed on the outer side of the rotating shaft 102. 103, the baffle plate 103 and the rotating shaft 102 are rotatably connected. The inner side of the baffle plate 103 is provided with a first groove 104, and the outer side of the metal sleeve 101 is provided with a second groove 105. The inner side of the first groove 104 is provided with a first connecting block 106. A rubber spring 107 is provided on one side of the first connecting block 106. A second connecting block 108 is provided at one end of the rubber spring 107. The second connecting block 108 is located in the second groove 105. The outer side of the baffle plate 103 is provided with a first spiral guide plate 109. Multiple sets of the first spiral guide plates 109 are provided.

[0025] Please see Figure 4 , Figure 5 and Figure 6 In this embodiment, the heat-resistant component includes an inner pipe 201 and a connecting groove 202. The inner pipe 201 is disposed inside the outer pipe 1, and the connecting groove 202 is opened on the outer side of the inner pipe 201. The connecting groove 202 is located between the outer pipe 1 and the inner pipe 201. The heat-resistant component also includes a disc spring 203 and a connecting metal plate 204. The disc spring 203 is disposed inside the connecting groove 202, and the connecting metal plate 204 is disposed at one end of the disc spring 203. The heat-resistant component includes a corrugated metal plate. 205. One end of the disc spring 203 is provided with a connecting hook 206. Multiple sets of connecting hooks 206 are provided. When the composite tube is heated and a radial gap is generated due to the difference in the expansion coefficients of the inner and outer layers, the disc spring 203 expands due to heat and squeezes the corrugated metal plate 205. The corrugation direction of the corrugated metal plate 205 is perpendicular to the tube axis direction. When the corrugated metal plate 205 is squeezed, it generates elastic deformation to absorb the difference in expansion coefficients. At the same time, the pre-compression elastic force of the disc spring 203 provides radial support force to the composite tube to maintain the interlayer adhesion.

[0026] The turbulence-inducing component includes a second spiral guide plate 301 and a spiral guide groove 302. The inner side of the inner pipe 201 is provided with the second spiral guide plate 301 and the inner side of the inner pipe 201 is provided with a spiral guide groove 302. In use, the fluid in the pipe is swirled by the second spiral guide plate 301 and the spiral guide groove 302, which enhances the heat exchange efficiency and reduces the temperature difference of the pipe wall. The connection component includes a connecting pipe 401 and a flange 402. The outer side of the outer pipe 1 is provided with the connecting pipe 401 and a flange 402 is provided at one end of the connecting pipe 401. The connection component also includes fixing bolts 403. The inner side of the flange 402 is provided with fixing bolts 403. Multiple sets of fixing bolts 403 are provided. In use, the flange 402 and the fixing bolts 403 are used to connect and fix the composite pipe and the outer pipe structure.

[0027] During operation, when the temperature of the conveying medium exceeds a certain temperature, the rubber spring 107 expands axially due to its thermosensitive properties, pushing the baffle 103 to unfold around the shaft 102. After unfolding, the baffle 103 forms a radial gap with the outer pipe 1, significantly increasing the natural convection heat dissipation area. At the same time, the first spiral guide plate 109 on the outside of the baffle 103 cuts the external airflow into spiral turbulence. This structure achieves dynamic adjustment of the heat dissipation area through purely mechanical thermal response, without the need for external energy input.

[0028] A second spiral guide plate 301 is welded to the inner side of the inner pipe 201, which, together with the spiral guide groove 302, forms a dual-channel enhanced heat transfer structure; when the high-temperature medium flows through, the fluid forms a double spiral flow under the action of the guide plate.

[0029] To address the issue of the difference in thermal expansion coefficients between metal-plastic composite pipes, when the system temperature exceeds a certain range, radial gaps are generated between the inner and outer pipe layers 1. The disc spring 203 expands due to heat, causing the corrugated metal plate 205 to undergo elastic deformation. The vertical corrugated structure of the corrugated metal plate 205 forms a "spring-damping" system under pressure, which absorbs the expansion difference and maintains the interlayer contact pressure through preload, thus maintaining heat transfer efficiency.

[0030] Through the above steps, when the working environment temperature of the composite pipe rises, the rubber spring 107 expands due to thermal expansion and contraction. The expansion of the rubber spring 107 causes multiple sets of baffles 103 to unfold. After the baffles 103 unfold, they form gaps with the pipe wall, increasing the heat dissipation area. Natural convection is used to enhance heat dissipation. The first spiral guide plate 109 is used to turbulentize the airflow outside the pipe to form turbulence outside the pipe, thereby improving the heat dissipation effect. Thus, dynamic heat dissipation of the composite pipe is achieved according to temperature changes.

[0031] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. An environmentally friendly heat-resistant composite pipe comprising an outer pipe (1), characterized in that: It also includes protective components, temperature-resistant components, flow-turbulence components, and connecting components. The outer side of the outer pipe (1) is provided with protective components, the inner side of the outer pipe (1) is provided with temperature-resistant components, the inner side of the temperature-resistant components is provided with flow-turbulence components, and one end of the outer pipe (1) is provided with connecting components. There are two sets of connecting components. The protective components include a metal sleeve (101), a rotating shaft (102) is provided inside the metal sleeve (101), multiple sets of rotating shafts (102) are provided, and a baffle plate (103) is provided outside the rotating shaft (102). The baffle plate (103) and the rotating shaft (102) are rotated together. Next, a first groove (104) is provided on the inner side of the baffle (103), and a second groove (105) is provided on the outer side of the metal sleeve (101). A first connecting block (106) is provided on the inner side of the first groove (104), a rubber spring (107) is provided on one side of the first connecting block (106), and a second connecting block (108) is provided at one end of the rubber spring (107). The second connecting block (108) is located in the second groove (105), and a first spiral guide plate (109) is provided on the outer side of the baffle (103). Multiple sets of the first spiral guide plate (109) are provided.

2. The environment-friendly heat-resistant composite pipe according to claim 1, characterized in that: The heat-resistant component includes an inner pipe (201) and a connecting groove (202). The inner pipe (201) is provided on the inner side of the outer pipe (1), and the connecting groove (202) is provided on the outer side of the inner pipe (201). The connecting groove (202) is located between the outer pipe (1) and the inner pipe (201).

3. The environment-friendly heat-resistant composite pipe according to claim 2, characterized in that: The heat-resistant component also includes a disc spring (203) and a connecting metal plate (204). The disc spring (203) is provided on the inner side of the connecting groove (202), and the connecting metal plate (204) is provided on one end of the disc spring (203).

4. The environment-friendly heat-resistant composite pipe according to claim 3, characterized in that: The heat-resistant component includes a corrugated metal plate (205), and a connecting hook (206) is provided at one end of a disc spring (203), with multiple sets of connecting hooks (206).

5. The environment-friendly heat-resistant composite pipe according to claim 2, characterized in that: The turbulence component includes a second spiral guide plate (301) and a spiral guide groove (302). The inner side of the inner pipe (201) is provided with the second spiral guide plate (301) and the inner side of the inner pipe (201) is provided with the spiral guide groove (302).

6. The environment-friendly heat-resistant composite pipe according to claim 1, characterized in that: The connection assembly includes a connecting pipe (401) and a flange (402). The connecting pipe (401) is provided on the outside of the outer pipe (1), and a flange (402) is provided at one end of the connecting pipe (401).

7. The environment-friendly heat-resistant composite pipe according to claim 6, characterized in that: The connecting assembly also includes fixing bolts (403), and fixing bolts (403) are provided on the inner side of the flange (402), with multiple sets of fixing bolts (403).

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