High-pressure-resistant structure of thermal insulation pipe

Abstract

The utility model relates to the technical field of thermal insulation pipes, and discloses a high pressure resistant structure of a thermal insulation pipe, which comprises a pipe outer wall, two ends of the pipe outer wall are respectively and fixedly connected with a flange plate, a plurality of groups of bolts are arranged in the flange plate, and two ends of the plurality of groups of bolts are respectively provided with a gasket. The two ends of the bolts are in threaded connection with hexagon nuts correspondingly. According to the heat preservation pipe, the heat preservation pipe is resistant to compression and collision, the rigidity of the outer layer is improved through the first compression-resistant layer, damage caused by external mechanical collision is reduced, the compression-resistant supporting structures in the second compression-resistant layer are evenly distributed in a triangular shape, when pressure is applied to the outside, external force can be resisted and supported through the triangular structures, and internal stress of the heat preservation pipe is reduced; when the outside is subjected to large impact force, the external force is buffered through the buffer layer, most of the force is removed, then secondary pressure-resistant buffer is conducted through the pressure-resistant buffer structure arranged in a rhombus shape in the third pressure-resistant layer, and the stress of the lining pipe is reduced to the minimum.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal insulation pipes, in particular to a high-pressure resistant structure of a thermal insulation pipe. Background Art

[0002] Insulated pipes are widely used in situations where thermal insulation is required, such as central heating systems: urban or regional central heating networks, transporting hot water or steam, oil and gas industries: transporting oil, gas and other media, especially when heat loss needs to be prevented, chemical industry: transporting chemical materials that need to be kept warm or cold, such as liquid chemicals, gases, etc.

[0003] Common insulation pipes have the following defects: insufficient pressure resistance. Traditional insulation pipes may not have sufficient pressure-resistant layers or the pressure-resistant layers may be unreasonably designed, which may lead to easy damage under external mechanical impact or pressure, poor impact resistance. If the insulation pipe lacks an effective buffer layer or pressure-resistant support structure, it may not be able to withstand large external impact forces, limited wear resistance. Some insulation pipes may not have a wear-resistant layer or the wear-resistant layer may have insufficient performance, and are easily worn by external hard objects, resulting in poor insulation effect. If the insulation layer of the insulation pipe has improper material selection or poor construction quality, it may lead to unsatisfactory insulation effect, large heat loss, and weak anti-leakage ability. If the insulation pipe does not have an effective anti-corrosion layer and waterproof layer, once the inner liner leaks, it may cause corrosion damage and liquid leakage to the outside. Therefore, the utility model proposes a high-pressure resistant structure of an insulation pipe to solve the problems existing in the prior art. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a high-pressure resistant structure of a thermal insulation pipe.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a high-pressure resistant structure of an insulation pipe, comprising an outer wall of the pipe and a third pressure-resistant layer, the two ends of the outer wall of the pipe are respectively fixedly connected with flanges, a plurality of groups of bolts are arranged in the flange, the two ends of the plurality of groups of bolts are respectively provided with gaskets, the two ends of the plurality of groups of bolts are respectively threaded with hexagonal nuts, an inner liner pipe is arranged in the outer wall of the pipe, a sealing ring is arranged on one end of the inner liner pipe, and a buffer layer, a second pressure-resistant layer, a thermal insulation layer, a first pressure-resistant layer, and a wear-resistant layer are sequentially arranged on the outer wall of the pipe from the inside to the outside.

[0006] As a further description of the above technical solution:

[0007] The inner lining pipe is provided with an anti-corrosion layer, a waterproof layer and a third pressure-resistant layer in sequence from the inside to the outside.

[0008] As a further description of the above technical solution:

[0009] A plurality of groups of pressure-resistant support structures are arranged in the second pressure-resistant layer. The pressure-resistant support structures are distributed in the second pressure-resistant layer in a triangular shape. The material of the pressure-resistant support structures is polyurethane material. The polyurethane material can be processed into various shapes through different processes. At the same time, it has the characteristic of high surface hardness when used. The triangular structure of the polyurethane material can provide strong support for the inside of the tube.

[0010] As a further description of the above technical solution:

[0011] Several groups of pressure-resistant buffer structures are arranged in the third pressure-resistant layer. The groups of pressure-resistant buffer structures are distributed in a rhombus shape in the third pressure-resistant layer. The material of the pressure-resistant buffer structure is carbon fiber material. The rhombus structure design can buffer and unload external force and better withstand external pressure.

[0012] As a further description of the above technical solution:

[0013] The wear-resistant layer is made of polyethylene resin, the first pressure-resistant layer is made of galvanized steel plate, which can effectively reduce the impact of external mechanical collisions on the interior, and the surface galvanizing increases the corrosion resistance. The insulation layer is made of polystyrene foam material, which is a very light material that is easy to carry and install, has low thermal conductivity and good thermal insulation performance. The buffer layer is made of rubber material, which has excellent elasticity and resilience and is a good buffering and shock-absorbing material.

[0014] As a further description of the above technical solution:

[0015] The thickness of the first pressure-resistant layer is 0.8 mm, and thinner steel plates can reduce costs.

[0016] As a further description of the above technical solution:

[0017] The waterproof layer is made of polyester resin material, and the anti-corrosion layer is made of epoxy resin material, which is corrosion-resistant and thermally stable.

[0018] The utility model has the following beneficial effects:

[0019] 1. In the utility model, the insulation pipe is made resistant to pressure and collision. The rigidity of the outer layer is improved by the first pressure-resistant layer, and the damage caused by external mechanical impact is reduced. The pressure-resistant support structure in the second pressure-resistant layer is evenly distributed in a triangular shape. When external pressure is applied, the triangular structure can resist and support the external force, thereby reducing the internal force of the insulation pipe. When the external force is relatively large, the buffer layer can buffer the external force and unload most of the force. Then, the diamond-shaped pressure-resistant buffer structure in the third pressure-resistant layer can perform secondary pressure-resistant buffering to reduce the force on the inner liner to a minimum.

[0020] 2. The utility model also realizes the functions of wear resistance, heat preservation, and leakage prevention of the thermal insulation pipe. The outermost wear-resistant layer protects the inside of the thermal insulation pipe from the friction of external hard objects, reduces the damage caused by wear and extends the service life of the thermal insulation pipe. The thermal insulation effect is achieved by the thermal insulation layer to lock the heat inside and reduce heat loss. When the pipeline in the inner liner pipe leaks, the anti-corrosion layer reduces the corrosion damage to the thermal insulation pipe caused by the leaked material, and the waterproof layer isolates the liquid in the inner liner pipe to prevent leakage to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional structural schematic diagram of a high-pressure resistant structure of a thermal insulation pipe proposed by the utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the two ends of the inner liner pipe of the high pressure resistant structure of the thermal insulation pipe proposed by the utility model;

[0023] Figure 3 This is a front view of a high pressure resistant structure of a thermal insulation pipe proposed by the utility model;

[0024] Figure 4 A schematic diagram of the internal structure of the outer wall of a heat preservation pipe with a high pressure resistance structure proposed by the utility model;

[0025] Figure 5 The utility model provides a schematic diagram of the internal structure of an inner liner pipe with a high pressure resistance structure of a thermal insulation pipe.

[0026] Legend:

[0027] 1. Outer wall of the pipe; 2. Liner pipe; 3. Flange; 4. Bolts; 5. Hexagonal nuts; 6. Gaskets; 7. Wear-resistant layer; 8. First pressure-resistant layer; 9. Insulation layer; 10. Second pressure-resistant layer; 11. Buffer layer; 12. Third pressure-resistant layer; 13. Waterproof layer; 14. Pressure-resistant buffer structure; 15. Pressure-resistant support structure; 16. Anti-corrosion layer; 17. Sealing ring. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0029] Reference Figure 1-Figure 5The utility model provides an embodiment: a high-pressure resistant structure of an insulation pipe, comprising an outer wall 1 of the pipe and a third pressure-resistant layer 12, flanges 3 are fixedly connected at both ends of the outer wall 1 of the pipe, a plurality of groups of bolts 4 are arranged in the flange 3, gaskets 6 are arranged at both ends of the plurality of groups of bolts 4, hexagonal nuts 5 are threadedly connected at both ends of the plurality of groups of bolts 4, an inner liner pipe 2 is arranged in the outer wall 1 of the pipe, a sealing ring 17 is arranged on one end of the inner liner pipe 2, a buffer layer 11, a second pressure-resistant layer 10, a thermal insulation layer 9, a first pressure-resistant layer 8, and a wear-resistant layer 7 are arranged in sequence on the outer wall 1 of the pipe from the inside to the outside.

[0030] The inner lining pipe 2 is provided with an anti-corrosion layer 16, a waterproof layer 13, and a third pressure-resistant layer 12 in sequence from the inside to the outside. The second pressure-resistant layer 10 is provided with a plurality of groups of pressure-resistant support structures 15. The pressure-resistant support structures 15 are distributed in the second pressure-resistant layer 10 in a triangular shape. The triangular structure can provide stable supporting force. The material of the pressure-resistant support structure 15 is polyurethane material. The polyurethane material can be processed into various shapes through different processes. At the same time, it also has the characteristics of high surface hardness when used. The third pressure-resistant layer 12 is provided with a plurality of groups of pressure-resistant buffer structures 14. The plurality of groups of pressure-resistant buffer structures 14 are distributed in the third pressure-resistant layer 12 in a rhombus shape. The rhombus distribution is conducive to absorbing pressure and buffering through deformation. The material of the pressure-resistant buffer structure 14 is carbon fiber material. The carbon fiber material has very high tensile strength and rigidity. The rhombus structure is more conducive to buffering external force. The material of the wear-resistant layer 7 is polyethylene resin. Polyethylene resin has light The material of the first pressure-resistant layer 8 is galvanized steel plate, which can effectively reduce the impact of external mechanical collision on the internal part, and the surface galvanizing increases the corrosion resistance. The material of the thermal insulation layer 9 is polystyrene foam material, which is a very light material, easy to carry and install, with low thermal conductivity and good thermal insulation performance. The material of the buffer layer 11 is rubber material, which has excellent elasticity and resilience and is a good buffer and shock-absorbing material. The thickness of the first pressure-resistant layer 8 is 0.8 mm, which reduces weight and saves costs. The material of the waterproof layer 13 is polyester resin material, which has waterproof properties and good tolerance to chemicals. The material of the anti-corrosion layer 16 is epoxy resin material, which has high mechanical strength after curing and can maintain stable performance in a large temperature range.

[0031] Working principle: connect the ends of multiple groups of insulation pipes, connect the inner liner pipe 2 protruding from one end of the outer wall 1 of the pipe to the inner liner pipe 2 recessed at the other end of the outer wall 1 of the pipe, connect the outer walls 1 of the pipes in pairs through the flange 3, tighten the insulation pipe with the bolts 4, hexagonal nuts 5, and gaskets 6, and seal the inner liner pipe 2 by tightening the sealing ring 17. The utility model also realizes the multiple functions of the insulation pipe, such as wear resistance, pressure resistance, collision resistance, heat preservation, and leakage prevention. The outermost wear-resistant layer 7 protects the insulation pipe from friction with external hard objects, reduces damage caused by wear and extends the service life of the insulation pipe, improves the rigidity of the outer layer of the insulation pipe through the first pressure-resistant layer 8, reduces the damage caused by external mechanical impact, and realizes the insulation layer 9. The thermal insulation effect locks the heat inside and reduces heat loss. The pressure-resistant support structure 15 in the second pressure-resistant layer 10 is evenly distributed in a triangular shape. When external pressure is applied, the triangular structure can resist and support the external force to reduce the internal force of the insulation pipe. When the outside is subjected to a large impact force, the buffer layer 11 buffers the external force and unloads most of the force. Then, the diamond-shaped pressure-resistant buffer structure 14 in the third pressure-resistant layer 12 performs secondary pressure buffering to reduce the force on the liner pipe 2 to a minimum. When a leak occurs in the pipeline inside the liner pipe 2, the anti-corrosion layer 16 reduces the corrosion damage to the insulation pipe caused by the leaked material, and the waterproof layer 13 isolates the liquid in the liner pipe 2 to prevent leakage to the outside.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A high pressure resistant structure of a thermal insulation pipe, comprising a pipe outer wall (1) and a third pressure resistant layer (12), characterized in that: The two ends of the outer wall of the pipe (1) are respectively fixedly connected with flanges (3), the flange (3) is provided with a plurality of groups of bolts (4), the two ends of the plurality of groups of bolts (4) are respectively provided with gaskets (6), the two ends of the plurality of groups of bolts (4) are respectively threadedly connected with hexagonal nuts (5), the outer wall of the pipe (1) is provided with an inner liner (2), one end of the inner liner (2) is provided with a sealing ring (17), and the outer wall of the pipe (1) is provided with a buffer layer (11), a second pressure-resistant layer (10), a thermal insulation layer (9), a first pressure-resistant layer (8), and a wear-resistant layer (7) in sequence from the inside to the outside; A plurality of groups of pressure-resistant support structures (15) are arranged in the second pressure-resistant layer (10), the pressure-resistant support structures (15) are distributed in the second pressure-resistant layer (10) in a triangular shape, and the material of the pressure-resistant support structures (15) is polyurethane material; A plurality of groups of pressure-resistant buffer structures (14) are arranged in the third pressure-resistant layer (12); the plurality of groups of pressure-resistant buffer structures (14) are distributed in the third pressure-resistant layer (12) in a rhombus shape; and the material of the pressure-resistant buffer structures (14) is carbon fiber material.

2. The high pressure resistant structure of the thermal insulation pipe according to claim 1, characterized in that: The inner lining pipe (2) is provided with an anti-corrosion layer (16), a waterproof layer (13), and a third pressure-resistant layer (12) in sequence from the inside to the outside.

3. The high pressure resistant structure of the thermal insulation pipe according to claim 2, characterized in that: The material of the wear-resistant layer (7) is polyethylene resin, the material of the first pressure-resistant layer (8) is galvanized steel plate, the material of the thermal insulation layer (9) is polystyrene foam material, and the material of the buffer layer (11) is rubber material.

4. The high pressure resistant structure of the thermal insulation pipe according to claim 3, characterized in that: The thickness of the first pressure-resistant layer (8) is 0.8 mm.

5. The high pressure resistant structure of the thermal insulation pipe according to claim 4, characterized in that: The material of the waterproof layer (13) is polyester resin material, and the material of the anti-corrosion layer (16) is epoxy resin material.

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