Multilayer composite structure high-efficiency thermal insulation pipe

Abstract

The utility model discloses a kind of multilayer composite structure high-efficiency heat preservation pipe, including heat preservation coat and the conveying pipe being installed in the inside of heat preservation coat, the circular inner wall of heat preservation coat is provided with heat preservation outer layer, the circular outer wall of conveying pipe is provided with heat preservation inner layer, the circular outer wall of conveying pipe is provided with heat conducting plate, the inside of heat conducting plate is provided with heating wire, by installing heating wire and heat conducting plate, can pass through heating wire and be electrified, the heat of heating wire is evenly diffused on conveying pipe by heat conducting plate, can also heat to damp heat preservation medium simultaneously, make it become dry, can avoid the deterioration of heat preservation performance due to damp, ensure that heat preservation pipe always maintains high-efficiency heat preservation ability, can reduce the erosion of moisture to heat preservation material, prolong the service life of heat preservation material, to prolong the service life of entire heat preservation pipe, reduce the cost and frequency of replacing heat preservation pipe.

Description

Technical Field

[0001] This utility model belongs to the technical field of thermal insulation pipes, specifically relating to a multi-layer composite structure high-efficiency thermal insulation pipe. Background Technology

[0002] Multi-layer composite high-efficiency insulated pipes are pipelines used to transport various fluids. Their design aims to minimize heat transfer between the fluid inside the pipe and the external environment, thereby achieving high-efficiency insulation. This type of insulated pipe utilizes a multi-layer structure composed of various materials, fully leveraging the advantages of each layer to effectively improve overall performance, including insulation, mechanical properties, and durability.

[0003] However, when insulating the medium inside the delivery pipe, if the outer pipe is damaged, causing the inner insulation layer to become damp, the medium cannot be kept warm, resulting in the medium freezing and being unable to continue flowing. Furthermore, the workload and time required to replace the insulation layer are enormous. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-layer composite structure high-efficiency heat-insulating pipe to solve the problem mentioned in the background art that if the outer pipe is damaged, resulting in the internal heat-insulating layer becoming damp, the medium cannot be kept warm.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a multi-layer composite high-efficiency heat-insulating pipe, comprising an insulation jacket and a conveying pipe installed inside the insulation jacket;

[0006] The outer circular wall of the thermal insulation jacket is provided with a thermal insulation outer layer;

[0007] The outer circular wall of the conveying pipe is provided with a heat-insulating inner layer;

[0008] A heat-conducting plate is provided on the circular outer wall of the conveying pipe, and a heating wire is provided inside the heat-conducting plate.

[0009] Preferably, a thickened tube is fixedly connected to the circular outer wall of the conveying pipe to restrict the position of the heat-conducting plate.

[0010] Preferably, the heating wire is provided with a current converter at its first end to convert the energizing voltage to a suitable voltage for the heating wire.

[0011] Preferably, a power cord is fixedly connected to the upper outer wall of the current converter for electrical connection with an external power source, and an opening is provided inside the upper circular outer wall of the thickened tube for the power cord to pass through.

[0012] Preferably, the outer circular wall of the thermal insulation jacket is fixedly connected to an outer tube.

[0013] Preferably, the outer insulating layer has a waterproof layer inside, and the waterproof layer has a barrier layer inside.

[0014] Preferably, the outer tube is a seamless steel pipe, and the insulation jacket is made of hard rubber material.

[0015] Preferably, the outer insulating layer is made of polyurethane foam, and the waterproof layer is made of high-density polyethylene.

[0016] Preferably, the barrier layer is made of aluminum foil, and the inner insulation layer is made of glass wool.

[0017] Compared with the prior art, this utility model provides a multi-layer composite structure high-efficiency heat insulation pipe, which has the following beneficial effects:

[0018] By installing heating wires and heat-conducting plates, when the insulation medium inside the insulation pipe is damp, the heating wires can be energized, and the heat emitted by the heating wires is evenly diffused onto the conveying pipe through the heat-conducting plates. At the same time, the damp insulation medium can be heated and dried, which can prevent the insulation performance from deteriorating due to moisture and ensure that the insulation pipe always maintains its high insulation capacity. By heating and drying the damp insulation medium, the erosion of the insulation material by moisture can be reduced, extending the service life of the insulation material, thereby extending the service life of the entire insulation pipe and reducing the cost and frequency of replacing the insulation pipe. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a multi-layer composite high-efficiency heat-insulating pipe according to the present invention.

[0020] Figure 2 This is a front view structural diagram of the outer insulation layer area of ​​this utility model.

[0021] Figure 3 This is a partial structural schematic diagram of the side cross-section of the conveying pipe area of ​​this utility model.

[0022] Figure 4 This is a partial structural schematic diagram of the side cross-section of the thickened pipe area of ​​this utility model.

[0023] In the diagram: 1. Outer tube; 2. Insulation jacket; 3. Insulation outer layer; 4. Delivery pipe; 5. Waterproof layer; 6. Barrier layer; 7. Insulation inner layer; 8. Thickened tube; 9. Current converter; 10. Power cord; 11. Heat-conducting plate; 12. Heating wire. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] This utility model provides, for example Figure 1-4 The multi-layer composite high-efficiency thermal insulation pipe shown includes a thermal insulation jacket 2 and a delivery pipe 4 installed inside the thermal insulation jacket 2;

[0026] An insulating outer layer 3 is provided on the circular inner wall of the insulating outer jacket 2;

[0027] The outer circular wall of the conveying pipe 4 is provided with an inner heat-insulating layer 7. Under normal circumstances, when the heat-insulating pipe is put into use, the medium that needs to be heat-insulated is conveyed in the conveying pipe 4. The outer heat-insulating jacket 2, the outer heat-insulating layer 3 and the inner heat-insulating layer 7 work together to play a heat-insulating role, reduce the heat exchange between the medium in the conveying pipe 4 and the external environment, and maintain the temperature of the conveyed medium stable.

[0028] A heat-conducting plate 11 is provided on the circular outer wall of the conveying pipe 4. A heating wire 12 is provided inside the heat-conducting plate 11. When the external temperature sensor detects that the current area of ​​the pipe temperature is unbalanced, the heating wire 12 is energized. The heat generated by the heating wire 12 is transferred to the heat-conducting plate 11. The heat-conducting plate 11 quickly and evenly diffuses the heat to both the inside and outside of the conveying pipe 4 to heat the conveyed medium and the moist insulation medium. When the external temperature sensor detects that the temperature is normal, the power supply to the heating wire 12 is cut off.

[0029] like Figure 4 As shown, a thickened tube 8 is fixedly connected to the circular outer wall of the conveying tube 4 to restrict the position of the heat-conducting plate 11. A current converter 9 is provided at the first end of the heating wire 12 to convert the voltage to a suitable voltage for the heating wire 12. A power cord 10 is fixedly connected to the upper outer wall of the current converter 9 to make an electrical connection with an external power source. An opening is provided inside the upper circular outer wall of the thickened tube 8 to allow the power cord 10 to pass through.

[0030] The thickened inner wall of the tube 8 provides radial constraint for the heat-conducting plate 11, preventing the heat-conducting plate 11 from moving in the circumferential direction. This ensures that the heat-conducting plate 11 always maintains a good fit with the conveying tube 4, so that the heat generated by the heating wire 12 can be effectively transferred to the conveying tube 4, thereby heating the insulation medium and ensuring the stability and reliability of the heating system. The current converter 9 can convert the voltage input from the external power supply into a voltage suitable for the operation of the heating wire 12 according to the resistance characteristics and power requirements of the heating wire 12, ensuring that the heating wire 12 can heat up normally, while avoiding damage to the heating wire 12 due to excessively high or low voltage. The power cord 10 is used to transmit electrical energy from the external power supply to the current converter 9.

[0031] like Figure 1 and Figure 2 As shown, the outer wall of the thermal insulation jacket 2 is fixedly connected to the outer tube 1, the inner side of the thermal insulation outer layer 3 is provided with a waterproof layer 5, and the inner side of the waterproof layer 5 is provided with a barrier layer 6.

[0032] The outer pipe 1 provides a robust protective base, ensuring that the pipe is protected from damage after burial. The waterproof layer 5 prevents external moisture from entering the insulation layer, and the barrier layer 6 reflects heat back, reducing heat transfer through radiation.

[0033] like Figure 1 and Figure 2 As shown, the outer tube 1 is a seamless steel pipe, the insulation jacket 2 is made of hard rubber material, the insulation outer layer 3 is made of polyurethane foam, the waterproof layer 5 is made of high-density polyethylene material, the barrier layer 6 is made of aluminum foil material, and the insulation inner layer 7 is made of glass wool material.

[0034] Seamless steel pipes provide excellent mechanical strength and structural support, protecting the internal layers from external physical impacts. The insulation jacket 2 is made of hard rubber, which has a certain degree of elasticity and cushioning, further reducing the impact of external forces on the internal insulation structure. Polyurethane foam has an extremely low thermal conductivity, effectively preventing heat from being conducted from the conveying pipe 4 to the outside. Glass wool also has a low thermal conductivity and fits tightly against the conveying pipe 4, providing direct insulation protection for the medium inside the conveying pipe 4. High-density polyethylene has a compact molecular structure and extremely low water permeability, effectively preventing external moisture from entering the insulation layer and avoiding a decrease in the insulation performance of the insulation material due to moisture intrusion. The aluminum foil is made of foil material, which has good reflective properties, reflecting heat back and reducing heat transfer through radiation. It also prevents fibers and other substances in the insulation material from diffusing outward, maintaining the stability of the insulation structure.

[0035] The implementation principle of this embodiment is as follows: Under normal circumstances, the insulation pipe is put into use, and the medium that needs to be insulated is transported in the conveying pipe 4. The insulation jacket 2, the insulation outer layer 3, and the insulation inner layer 7 work together to perform the insulation function, reduce the heat exchange between the medium in the conveying pipe 4 and the external environment, and maintain the temperature of the transported medium stable. When the external temperature sensor detects that the current area of ​​the pipe temperature is unbalanced, the heating wire 12 is energized. The heat generated by the heating wire 12 is transferred to the heat conduction plate 11. The heat conduction plate 11 quickly and evenly diffuses the heat to both the inside and outside of the conveying pipe 4, heating the transported medium and the damp insulation medium. When the external temperature sensor detects that the temperature is normal, the power supply to the heating wire 12 is cut off.

[0036] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layer composite high-efficiency thermal insulation pipe, comprising a thermal insulation jacket (2) and a conveying pipe (4) installed inside the thermal insulation jacket (2); The outer circular wall of the thermal insulation jacket (2) is provided with a thermal insulation outer layer (3); The outer circular wall of the conveying pipe (4) is provided with an inner heat-insulating layer (7). Its features are: A heat-conducting plate (11) is provided on the circular outer wall of the conveying pipe (4), and a heating wire (12) is provided inside the heat-conducting plate (11).

2. The high-efficiency thermal insulation pipe with a multi-layer composite structure according to claim 1, characterized in that: A thickened tube (8) is fixedly connected to the circular outer wall of the conveying pipe (4) to restrict the position of the heat-conducting plate (11).

3. The high-efficiency thermal insulation pipe with a multi-layer composite structure according to claim 2, characterized in that: A current converter (9) is provided at the first end of the heating wire (12).

4. The high-efficiency thermal insulation pipe with a multi-layer composite structure according to claim 3, characterized in that: The upper outer wall of the current converter (9) is fixedly connected to a power line (10) for electrical connection with an external power source. The upper circular outer wall of the thickened tube (8) has an opening for the power line (10) to pass through.

5. The high-efficiency thermal insulation pipe with a multi-layer composite structure according to claim 1, characterized in that: The outer wall of the thermal insulation jacket (2) is fixedly connected to the outer tube (1).

6. The high-efficiency thermal insulation pipe with a multi-layer composite structure according to claim 1, characterized in that: The outer heat insulation layer (3) has a waterproof layer (5) inside, and the waterproof layer (5) has a barrier layer (6) inside.

7. The high-efficiency thermal insulation pipe with a multi-layer composite structure according to claim 5, characterized in that: The outer tube (1) is a seamless steel pipe, and the insulation jacket (2) is made of hard rubber material.

8. The high-efficiency thermal insulation pipe with a multi-layer composite structure according to claim 6, characterized in that: The outer insulating layer (3) is made of polyurethane foam, and the waterproof layer (5) is made of high-density polyethylene.

9. A multi-layer composite high-efficiency thermal insulation pipe according to claim 6, characterized in that: The barrier layer (6) is made of aluminum foil, and the inner insulation layer (7) is made of glass wool.

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