Coated type prestress vacuum heat preservation pipe

Abstract

The utility model discloses a cladding type prestress vacuum heat preservation pipe, which comprises a metal corrugated inner pipe, a metal corrugated outer pipe, a plurality of separation circular rings and a buffer structure, and relates to the technical field of vacuum heat preservation pipes, and the heat preservation pipe has excellent high temperature resistance and heat insulation performance due to the unique multi-layer structural design; the metal corrugated inner pipe and the metal corrugated outer pipe are stably connected through the separating circular rings, so that a solid pipe body foundation is formed; the core buffering structure ingeniously integrates various materials such as coiled plastic strips, cobweb rubber blocks, prestressed tendons, coiled metal wires, glass fibers and aerogel, powerful structural support is provided for the pipe body, and the key point of heat insulation is achieved. Aerogel is used as an excellent heat insulation material, heat transfer is effectively blocked, and the heat conduction efficiency is further reduced by increasing the complexity and the length of a heat transfer path through the combination of the cobweb rubber blocks and the prestressed tendons.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum insulation pipes, in particular to a wrapped prestressed vacuum insulation pipe. Background Art

[0002] Municipal heating systems rely on a meticulously laid network of transmission pipelines, like the city's lifeblood, delivering warmth to every household. To ensure efficient and stable heating, thermal insulation is crucial. These pipelines act as a thermal barrier, trapping heat within the pipes and minimizing heat loss during transmission, ensuring every bit of heat is effectively converted into warmth for the user.

[0003] However, in current technical practice, the connection method between insulated pipes—using eccentric clasps (also known as oil pipe clasps)—has become a critical weakness. When steam flows through these eccentric clasps, it often experiences vortexes and disturbances. This increases flow resistance and exacerbates heat loss. Furthermore, the eccentric clasps are prone to leakage, quietly dissipating valuable heat energy. More seriously, steam may experience decompression issues while passing through the eccentric clasps, further reducing heating efficiency.

[0004] Therefore, the insulated pipe's stepped buckle unfortunately becomes a "hot spot" in the steam-driven pipe string. The "hot" here does not mean warm, but it means that it has become a concentrated area of heat loss and energy loss. In the long run, this high-temperature and high-pressure environment can easily lead to damage and deformation of the casing material, which not only affects the stability and safety of the heating system, but also increases the cost of maintenance and replacement. Therefore, finding a more efficient and reliable way to connect pipes to reduce heat loss and improve heating efficiency has become a technical problem that needs to be solved urgently in the field of municipal heating. For the above problems, there may already be technical means to solve them in the existing technology, but this case wants to provide an alternative or replacement technical solution. Utility Model Content

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wrapped prestressed vacuum insulation pipe, comprising: a metal corrugated inner pipe, a metal corrugated outer pipe, a plurality of separating rings, and a buffer structure, wherein the plurality of separating rings are evenly sleeved on the outside of the metal corrugated inner pipe, and the plurality of separating rings are respectively connected to the inside of the plurality of metal corrugated outer pipes, and the buffer structure is installed on the inside of the metal corrugated inner pipe and the metal corrugated outer pipe, and the buffer structure includes: a pair of coiled plastic strips, a plurality of spider web rubber blocks, a plurality of prestressed tendons, a pair of coiled metal wires, a pair of glass fibers, and aerogel;

[0006] A pair of the coiled plastic strips are respectively placed on the outside of the metal corrugated inner tube and the inside of the metal corrugated outer tube; a pair of the coiled metal wires are installed on the pair of the coiled plastic strips through the aerogel; a pair of the glass fibers are respectively installed on the pair of the coiled plastic strips through the aerogel; a plurality of the spider web rubber blocks are respectively installed between the pair of the glass fibers; a plurality of the prestressed tendons are respectively inserted on a plurality of the spider web rubber blocks; a pair of the coiled metal wires are coiled and installed on a plurality of the prestressed tendons;

[0007] It should be noted that, in the above, the insulation pipe is composed of a metal corrugated inner pipe, a metal corrugated outer pipe, a separating ring and a buffer structure; the metal corrugated inner pipe and the outer pipe are connected by a separating ring to form a stable pipe structure. The buffer structure is located between the inner pipe and the outer pipe, and is a key part of thermal insulation. The buffer structure is composed of a pair of coiled plastic strips, a number of spider web rubber blocks, prestressed tendons, coiled metal wires, glass fibers and aerogel; the coiled plastic strips are respectively attached to the outer wall of the inner pipe and the inner wall of the outer pipe, providing a basis for the subsequent stacked structure; aerogel, as an excellent thermal insulation material, is used to fix the coiled metal wires and glass fibers on the plastic strips; the spider web rubber blocks are distributed between the glass fibers and are connected to each other through prestressed tendons to form a strong and thermally insulating network structure; the coiled metal wires are finally wrapped around the prestressed tendons in a spider web-like manner to further enhance the stability and thermal insulation effect of the structure. The metal corrugated inner pipe and the outer pipe are made of high-temperature resistant materials and can withstand high-temperature media The insulated pipe is a thermal insulation pipe with a heat-insulating structure that is easy to install and can transmit heat without deformation or damage. At the same time, the addition of prestressed tendons and hoop reinforcements improves the overall strength and high-temperature resistance of the pipe body. The buffer structure is the core of the thermal insulation performance of the insulated pipe. As a material with extremely low thermal conductivity, aerogel effectively blocks the transfer of heat. The combination of spider web rubber blocks and prestressed tendons further reduces the heat conduction efficiency by increasing the path and complexity of heat transfer. The spider web structure of coiled metal wire and glass fiber forms a multi-layer thermal insulation barrier, making it difficult for heat to penetrate. In addition, the addition of polyurethane foam and rubber-plastic insulation film provides an additional insulation layer for the insulated pipe, further improving its thermal insulation performance. The setting of the anti-corrosion layer protects the outer pipe from erosion by the external environment and extends the service life of the insulated pipe.

[0008] Preferably, polyurethane foam is provided between several of the prestressed tendons.

[0009] Preferably, rubber-plastic insulation films are provided on the inner and outer sides of the polyurethane foam respectively.

[0010] Preferably, an anti-corrosion layer is provided on the outer side of the metal corrugated outer tube.

[0011] Preferably, a plurality of hoop reinforcement bars are respectively provided on the plurality of prestressed tendons.

[0012] Preferably, the coiled metal wire is installed in a spider web shape on the inner side of the polyurethane foam. Beneficial effects

[0013] The utility model provides a wrapped prestressed vacuum insulation pipe. Compared with the existing technology, this wrapped prestressed vacuum insulation pipe has the following beneficial effects: the insulation pipe has excellent high temperature resistance and heat insulation performance with its unique multi-layer structure design; the metal corrugated inner pipe and the outer pipe are firmly connected by a separation ring to form a solid pipe body foundation; the core buffer structure cleverly integrates a variety of materials such as coiled plastic strips, spider web rubber blocks, prestressed tendons, coiled metal wires, glass fibers and aerogels, which not only provides a strong structural support for the pipe body, but is also the key to heat insulation; aerogel, as an excellent heat insulation material, effectively blocks heat transfer, and the combination of spider web rubber blocks and prestressed tendons further increases the complexity and length of the heat transfer path. It reduces the efficiency of heat conduction; the spider-web structure of coiled metal wire and glass fiber forms a multi-layer thermal insulation barrier, making it difficult for heat to penetrate; in addition, the insulated pipe also specially adds polyurethane foam and rubber-plastic insulation film as additional insulation layers, which greatly improves its thermal insulation performance; at the same time, the metal corrugated inner pipe and outer pipe are made of high-temperature resistant materials, and the reinforcement of prestressed tendons and hoop reinforcements ensures the stable operation of the pipe body in high-temperature environments; the setting of the anti-corrosion layer effectively protects the outer pipe from erosion by the external environment, greatly extending the service life of the insulated pipe; in summary, the insulated pipe provides a safe and reliable solution for the transmission of high-temperature media with its excellent high-temperature resistance, heat insulation and corrosion resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of a main cross-sectional view of a wrapped prestressed vacuum insulation pipe described in the utility model.

[0015] Figure 2 It is a side sectional schematic diagram of a wrapped prestressed vacuum insulation pipe described in the utility model.

[0016] Figure 3 for Figure 1 A partial enlarged view of "A".

[0017] In the figure: 1. Metal corrugated inner tube; 2. Metal corrugated outer tube; 3. Separator ring; 4. Coiled plastic strip; 5. Spider web rubber block; 6. Prestressed tendons; 7. Coiled metal wire; 8. Glass fiber; 9. Aerogel; 10. Polyurethane foam. DETAILED DESCRIPTION

[0018] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0019] Through the use of wires by those skilled in the art, all electrical components in this case are connected to their corresponding power supplies, and appropriate controllers and encoders should be selected according to actual conditions to meet control requirements. The specific connection and control sequence should refer to the following working principle, in which the electrical components are electrically connected in sequence. The detailed connection means are well-known technologies in this field. The following mainly introduces the working principle and process, and no longer explains the electrical control. Example

[0020] The present invention will be described in detail below with reference to the accompanying drawings. Figure 1-3 As shown, several of the separating rings 3 are evenly sleeved on the outside of the metal corrugated inner tube 1, and several of the separating rings 3 are respectively connected to the inside of several of the metal corrugated outer tubes 2. The buffer structure is installed on the inner side of the metal corrugated inner tube 1 and the metal corrugated outer tube 2. The buffer structure includes: a pair of coiled plastic strips 4, several spider web rubber blocks 5, several prestressed tendons 6, a pair of coiled metal wires 7, a pair of glass fibers 8 and aerogel 9; a pair of the coiled plastic strips 4 are respectively placed on the outside of the metal corrugated inner tube 1 and the inside of the metal corrugated outer tube 2, a pair of the coiled metal wires 7 are installed on the pair of coiled plastic strips 4 through the aerogel 9, and a The glass fibers 8 are installed on a pair of the coiled plastic strips 4 through the aerogel 9, a number of the spider web rubber blocks 5 are installed between the pair of glass fibers 8, a number of the prestressed tendons 6 are inserted on the spider web rubber blocks 5, and a pair of the coiled metal wires 7 are coiled on the prestressed tendons 6; polyurethane foam 10 is provided between the prestressed tendons 6; rubber-plastic insulation films are provided on the inner and outer sides of the polyurethane foam 10; an anti-corrosion layer is provided on the outer side of the metal corrugated outer tube 2; a number of hoop reinforcement bars are provided on the prestressed tendons 6; the coiled metal wires 7 are installed on the inner side of the polyurethane foam 10 in a spider web shape.

[0021] According to the attached Figure 1-3It was concluded that the thermal insulation pipe consists of a metal corrugated inner pipe 1, a metal corrugated outer pipe 2, a separating ring 3 and a buffer structure; the metal corrugated inner pipe 1 and the outer pipe are connected by the separating ring 3 to form a stable pipe structure. The buffer structure is located between the inner tube and the outer tube, and is a key part of thermal insulation. The buffer structure consists of a pair of coiled plastic strips 4, several spider web rubber blocks 5, prestressed tendons 6, coiled metal wires 7, glass fibers 8 and aerogels 9. The coiled plastic strips 4 are attached to the outer wall of the inner tube and the inner wall of the outer tube respectively, providing a basis for the subsequent stacked structure. Aerogels 9, as an excellent thermal insulation material, are used to fix the coiled metal wires 7 and glass fibers 8 on the plastic strips. The spider web rubber blocks 5 are distributed between the glass fibers 8 and are interconnected by prestressed tendons 6 to form a network structure that is both strong and thermally insulating. The coiled metal wires 7 are finally wrapped around the prestressed tendons 6 in a spider web-like manner to further enhance the stability and thermal insulation effect of the structure. The metal corrugated inner tube 1 and outer tube are made of high-temperature resistant materials and can withstand It can be transmitted by high-temperature media without being deformed or damaged; at the same time, the addition of prestressed tendons 6 and hoop reinforcements improves the overall strength and high-temperature resistance of the pipe body, and the buffer structure is the core of the thermal insulation performance of the insulated pipe; aerogel 9, as a material with extremely low thermal conductivity, effectively blocks the transfer of heat; the combination of spider web rubber blocks 5 and prestressed tendons 6 further reduces the heat conduction efficiency by increasing the path and complexity of heat transfer; and the spider web structure of coiled metal wire 7 and glass fiber 8 forms a multi-layer thermal insulation barrier, making it difficult for heat to penetrate; in addition, the addition of polyurethane foam 10 and rubber-plastic insulation film provides an additional insulation layer for the insulation pipe, further improving its thermal insulation performance; the setting of the anti-corrosion layer protects the outer pipe from erosion by the external environment, thereby extending the service life of the insulation pipe.

[0022] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wrapped prestressed vacuum insulation pipe, comprising: A metal corrugated inner tube, a metal corrugated outer tube, a plurality of separating rings, and a buffer structure, wherein the plurality of separating rings are evenly sleeved on the outside of the metal corrugated inner tube, the plurality of separating rings are respectively connected to the inside of the plurality of metal corrugated outer tubes, and the buffer structure is installed on the inside of the metal corrugated inner tube and the metal corrugated outer tube, characterized in that the buffer structure comprises: a pair of coiled plastic strips, a plurality of spider web rubber blocks, a plurality of prestressed tendons, a pair of coiled metal wires, a pair of glass fibers, and aerogel; A pair of the coiled plastic strips are respectively arranged on the outside of the metal corrugated inner tube and the inside of the metal corrugated outer tube, a pair of the coiled metal wires are installed on the pair of the coiled plastic strips through the aerogel, a pair of the glass fibers are respectively installed on the pair of the coiled plastic strips through the aerogel, a number of the spider web rubber blocks are respectively installed between the pair of the glass fibers, a number of the prestressed tendons are respectively inserted on a number of the spider web rubber blocks, and a pair of the coiled metal wires are coiled and installed on a number of the prestressed tendons.

2. The wrapped prestressed vacuum insulation pipe according to claim 1, characterized in that: Polyurethane foam is arranged between a plurality of the prestressed tendons.

3. The wrapped prestressed vacuum insulation pipe according to claim 2, characterized in that: The inner and outer sides of the polyurethane foam are respectively provided with rubber-plastic insulation films.

4. The wrapped prestressed vacuum insulation pipe according to claim 3, characterized in that: An anti-corrosion layer is provided on the outer side of the metal corrugated outer tube.

5. The wrapped prestressed vacuum insulation pipe according to claim 4, characterized in that: A plurality of hoop reinforcement bars are respectively arranged on the plurality of prestressed bars.

6. The wrapped prestressed vacuum insulation pipe according to claim 5, characterized in that: The coiled wire is installed in a spider web shape on the inner side of the polyurethane foam.

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