Insulation pipe with flame-retardant hollow interlayer

Abstract

The utility model relates to the technical field of pipelines, in particular to a hollow interlayer flame-retardant thermal insulation pipe which comprises an inner pipe and a supporting pipe, the outer wall of the inner pipe is fixedly connected with the supporting pipe, a thermal insulation structure is arranged on the outer side of the supporting pipe and comprises an inner thermal insulation assembly, and the inner wall of the inner thermal insulation assembly is bonded with the supporting pipe. When gas is conveyed through a pipeline, the inner heat preservation assembly and the outer heat preservation assembly are made of nylon materials, the nylon materials have good heat preservation performance, and the supporting blocks are made of rock wool board materials and have the advantages of being small in heat conductivity coefficient and high in heat preservation performance. The inner heat preservation assembly and the outer heat preservation assembly are supported through the multiple supporting blocks to form the hollow structure, the contact area between the inner heat preservation assembly and the outer heat preservation assembly is reduced, the heat transfer efficiency is reduced, and therefore the heat preservation performance of the pipeline is improved, and the problem that heat loss is serious in the gas flowing process is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a hollow interlayer flame-retardant thermal insulation pipe. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors and valves for transporting gas, liquid or fluid with solid particles.

[0003] For example, the authorization announcement number CN218152857U is a double-layer flame retardant gas pipe with good flame retardant effect. In the above document, a connecting component is used to dock the pipes and make the pipes tightly connected, so as to improve the sealing of the gas during transmission. The positioning component is used to fix the connecting parts to prevent the connecting parts from loosening during daily use. However, during the use of the pipe in the above document, due to the lack of internal insulation structure, the thermal insulation performance of the pipe is poor, so that when the pipe in the above document transports gas, the gas is easily lost to the external space through heat transfer, so that the temperature of the gas inside the pipe cannot meet the use requirements;

[0004] At the same time, in the above-mentioned documents, during the use of the pipelines, since the pipelines on both sides are usually sealed by sealing gaskets after installation and fixation, the sealing gaskets are prone to aging due to long-term use, resulting in loosening and shaking between the sealing gaskets and the pipelines on both sides, resulting in gaps, which makes it easy for leakage to occur during the gas flow process, affecting the gas delivery. Utility Model Content

[0005] The utility model aims to solve the problem of poor thermal insulation performance of pipelines and the problem of easy leakage of pipelines due to long-term use, and proposes a hollow interlayer flame-retardant thermal insulation pipe.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A hollow sandwich flame-retardant insulation pipe is designed, comprising an inner pipe and a support pipe, wherein the outer wall of the inner pipe is fixedly connected to the support pipe, an insulation structure is arranged on the outer side of the support pipe, and the insulation structure comprises an inner insulation component, the inner wall of the inner insulation component is bonded to the support pipe, the outer wall of the inner insulation component is welded to a plurality of support blocks, and the outer ends of the support blocks are all welded to the outer insulation component.

[0008] Preferably, the outer wall of the external thermal insulation component is fixedly connected to the thermal insulation component.

[0009] Preferably, the outer wall of the thermal insulation assembly is fixedly connected to the flame retardant structure.

[0010] Preferably, the inner wall of the inner tube on the left is fixedly connected to the annular block, and the inner wall of the inner tube on the right is fixedly connected to the circular ring.

[0011] Preferably, an auxiliary sealing structure is provided inside the annular block, and the auxiliary sealing structure comprises a square block, the outer ends of a plurality of the square blocks are fixedly connected to the annular block, the outer wall of the square block is slidably connected to the cross bar, the end of the cross bar is fixedly connected to the annular plate, the right end of the annular plate is fixedly connected to the annular rubber pad, the right end of the annular rubber pad is tightly pressed against the circular ring, the left end of the square block and the right end of the inner wall of the cross bar are respectively fixedly connected to the two ends of the spring.

[0012] Preferably, the inner ends of the inner tubes on both sides are connected with corresponding flanges by bolts.

[0013] The utility model proposes a hollow interlayer flame-retardant insulation pipe, which has the beneficial effects of: when the gas is transported through the pipeline, the material of the inner insulation component and the outer insulation component is nylon material, and the nylon material has good insulation performance, and the material of the support block is rock wool board material, which has the characteristics of small thermal conductivity and high insulation performance. The inner insulation component and the outer insulation component are supported by multiple support blocks to form a hollow structure, which reduces the contact area between the inner insulation component and the outer insulation component, reduces the efficiency of heat transfer, thereby improving the insulation performance of the pipeline, and reducing the problem of serious heat loss during gas flow;

[0014] After the pipes on both sides are connected by flanges and bolts, the annular rubber is blocked by the circular ring, so that the annular rubber pad drives the annular plate to move to the left, and the ring drives the cross bar to move to the left along the square block. At the same time, the cross bar drives the spring to compress, so that the annular rubber pad and the circular ring are tightly pressed together. When a gap appears between the annular rubber pad and the circular ring due to looseness, the elastic force of the spring always acts on the annular tight rubber pad to move and fill the gap between the annular ring, thereby improving the sealing of the pipe connections on both sides and avoiding gas leakage due to long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 3 for Figure 2 The structural diagram of A in the figure;

[0018] Figure 4 for Figure 2 A side view schematic diagram of the structure;

[0019] Figure 5 for Figure 4 Schematic diagram of the structure of B.

[0020] In the figure: 1. inner tube, 2. support tube, 3. auxiliary sealing structure, 301. square block, 302. cross bar, 303. spring, 304. annular plate, 305. annular rubber pad, 4. thermal insulation structure, 4a1. inner thermal insulation component, 4a2. support block, 4a3. outer thermal insulation component, 4b1. wear-resistant strip, 5. annular block, 6. circular ring, 7. thermal insulation component, 8. flame retardant structure. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] Embodiment 1:

[0023] Refer to the attached Figure 1-5 : In the present embodiment, a hollow interlayer flame-retardant insulation pipe comprises an inner pipe 1 and a support pipe 2, the outer wall of the inner pipe 1 is fixedly connected to the support pipe 2, an insulation structure 4 is arranged on the outer side of the support pipe 2, the insulation structure 4 comprises an inner insulation component 4a1, the material of the inner insulation component 4a1 and the outer insulation component 4a3 is nylon material, the nylon material has good insulation performance, the material of the support block 4a2 is rock wool board material, which has the characteristics of small thermal conductivity and high insulation performance, and the inner insulation component 4a1 and the outer insulation component 4a3 are supported by a plurality of support blocks 4a2 to form a hollow structure, thereby reducing the contact area between the inner insulation component 4a1 and the outer insulation component 4a3, reducing the efficiency of heat transfer, and thus improving the insulation performance of the pipeline;

[0024] The inner wall of the inner insulation component 4a1 is bonded to the support tube 2, the outer wall of the inner insulation component 4a1 is welded to multiple support blocks 4a2, the outer ends of the support blocks 4a2 are welded to the outer insulation component 4a3, the outer wall of the outer insulation component 4a3 is fixedly connected to the insulation component 7, the material of the insulation component 7 is foamed polyurethane, which has good thermal insulation performance, the outer wall of the insulation component 7 is fixedly connected to the flame retardant structure 8, the flame retardant structure 8 is the prior art, and the specific reference authorization announcement number is CN218152857U, the inner wall of the left inner tube 1 is fixedly connected to the annular block 5, and the inner wall of the right inner tube 1 is fixedly connected to the ring 6.

[0025] An auxiliary sealing structure 3 is arranged inside the annular block 5. The auxiliary sealing structure 3 includes a square block 301. The outer ends of the plurality of square blocks 301 are fixedly connected to the annular block 5. After the pipes on both sides are connected by flanges and bolts, the annular rubber 305 is blocked by the circular ring 6, so that the annular rubber pad 305 drives the annular plate 304 to move leftward, and the ring 304 drives the cross bar 302 to move leftward along the square block 301. At the same time, the cross bar 302 drives the spring 303 to be compressed;

[0026] The annular rubber pad 305 is tightly pressed against the circular ring 6, so that when a gap appears between the annular rubber pad 305 and the circular ring 6, the elastic force of the spring 303 always acts on the movement of the annular tight rubber pad 305 to make up for the gap between the annular ring, thereby improving the sealing of the pipeline connections on both sides. The outer wall of the square block 301 is slidably connected to the cross bar 302, the end of the cross bar 302 is fixedly connected to the annular plate 304, the right end of the annular plate 304 is fixedly connected to the annular rubber pad 305, the right end of the annular rubber pad 305 is tightly pressed against the circular ring 6, the left end of the square block 301 and the right end of the inner wall of the cross bar 302 are fixedly connected to the two ends of the spring 303 respectively, and the inner ends of the inner tubes 1 on both sides are connected by bolts with corresponding flanges.

[0027] Working principle:

[0028] When the gas is transported through the pipeline, the material of the inner insulation component 4a1 and the outer insulation component 4a3 is nylon material, which has good thermal insulation performance. The material of the support block 4a2 is rock wool board material, which has the characteristics of small thermal conductivity and high thermal insulation performance. The inner insulation component 4a1 and the outer insulation component 4a3 are supported by multiple support blocks 4a2 to form a hollow structure, which reduces the contact area between the inner insulation component 4a1 and the outer insulation component 4a3, reduces the efficiency of heat transfer, thereby improving the thermal insulation performance of the pipeline and reducing the problem of serious heat loss during gas flow.

[0029] After the pipes on both sides are connected by flanges and bolts, the annular rubber 305 is blocked by the circular ring 6, so that the annular rubber pad 305 drives the annular plate 304 to move to the left, and the ring 304 drives the cross bar 302 to move to the left along the square block 301. At the same time, the cross bar 302 drives the spring 303 to compress, so that the annular rubber pad 305 is tightly pressed against the circular ring 6. When a gap appears between the annular rubber pad 305 and the circular ring 6, the elastic force of the spring 303 always acts on the annular tight rubber pad 305 to move, and fills the gap between the annular rubber pad 305 and the circular ring, thereby improving the sealing of the pipe connection on both sides and avoiding gas leakage due to long-term use.

[0030] Embodiment 2:

[0031] Refer to the attached Figure 1-5 In the present embodiment, a hollow sandwich flame-retardant thermal insulation pipe is provided, wherein the thermal insulation structure 4 may further include wear-resistant strips 4b1, the inner ends of the plurality of wear-resistant strips 4b1 are bonded to the flame-retardant structure 8, the pipe body is supported by the wear-resistant strips 4b1, and the wear of the outer wall of the pipe body is reduced by the wear-resistant strips 4b1 first contacting with external objects.

[0032] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A hollow interlayer flame-retardant thermal insulation pipe, comprising an inner pipe (1) and a support pipe (2), wherein the outer wall of the inner pipe (1) is fixedly connected to the support pipe (2), characterized in that: A heat-insulating structure (4) is arranged on the outside of the support tube (2), and the heat-insulating structure (4) comprises an inner heat-insulating component (4a1), the inner wall of the inner heat-insulating component (4a1) is bonded to the support tube (2), the outer wall of the inner heat-insulating component (4a1) is welded to a plurality of support blocks (4a2), and the outer ends of the support blocks (4a2) are welded to the outer heat-insulating component (4a3).

2. The hollow interlayer flame-retardant thermal insulation pipe according to claim 1, characterized in that: The outer wall of the outer heat-insulating component (4a3) is fixedly connected to the heat-insulating component (7).

3. A hollow interlayer flame-retardant thermal insulation pipe according to claim 2, characterized in that: The outer wall of the heat insulation component (7) is fixedly connected to the flame retardant structure (8).

4. The hollow interlayer flame-retardant thermal insulation pipe according to claim 1, characterized in that: The inner wall of the inner tube (1) on the left is fixedly connected to the annular block (5), and the inner wall of the inner tube (1) on the right is fixedly connected to the circular ring (6).

5. The hollow interlayer flame-retardant thermal insulation pipe according to claim 4, characterized in that: An auxiliary sealing structure (3) is arranged inside the annular block (5), and the auxiliary sealing structure (3) comprises a square block (301), the outer ends of the plurality of square blocks (301) are fixedly connected to the annular block (5), the outer wall of the square block (301) is slidably connected to the cross bar (302), the end of the cross bar (302) is fixedly connected to the annular plate (304), the right end of the annular plate (304) is fixedly connected to the annular rubber pad (305), the right end of the annular rubber pad (305) is tightly pressed against the circular ring (6), and the left end of the square block (301) and the right end of the inner wall of the cross bar (302) are respectively fixedly connected to the two ends of the spring (303).

6. The hollow interlayer flame-retardant thermal insulation pipe according to claim 1, characterized in that: The inner ends of the inner tubes (1) on both sides are connected with corresponding flanges through bolts.

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