Tubular heat preservation cotton for petroleum and natural gas pipeline

Abstract

The utility model relates to the technical field of pipeline heat preservation, and discloses tubular heat preservation cotton for petroleum and natural gas pipelines, which comprises a heat preservation sleeve with a tubular structure, and the heat preservation sleeve comprises an inner heat preservation layer, a supporting layer, an outer heat preservation layer, a waterproof layer and an outer layer. An extension part A is arranged at one end of the outer layer; an extension part B and an extension part C are respectively arranged on the outer layer; the extension part A is bonded to the outer side face of the adjacent heat preservation sleeve through the sealing glue layer B on the extension part A, the extension part B is bonded to the outer side face of the opening and the blank position of the waterproof layer through the sealing glue layer B on the extension part B, and the extension part C is bonded to the outer side face of the extension part B through the sealing glue layer B on the extension part C. Due to the design of the extension part A, the extension part B and the extension part C, the adjacent heat preservation sleeves can be better in butt joint, the stability of the whole structure is improved, the metal net provides additional support, the whole heat preservation sleeve is firmer and more durable, and the heat preservation effect is improved through the inner heat preservation layer and the outer heat preservation layer.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline thermal insulation, and in particular relates to a tubular thermal insulation cotton used for oil and natural gas pipelines. Background Art

[0002] In the oil and gas industry, pipeline insulation is crucial. Insulation technology effectively reduces heat loss and external heat intrusion during pipeline transportation, ensuring the safe and efficient transportation of oil and gas at optimal temperatures. However, traditional pipeline insulation materials and methods have limitations, such as poor thermal insulation, insufficient mechanical strength, and poor waterproofing and corrosion resistance.

[0003] Existing pipe insulation materials and methods have certain shortcomings in their thermal insulation performance. They are unable to effectively reduce heat loss or external heat intrusion, resulting in energy waste and increased operating costs. Existing insulation materials simply use a two-layer structure of insulation cotton and aluminum foil. When subjected to external environmental pressure and impact, they are easily damaged, affecting the stability and service life of the insulation structure. During installation and docking, the insulation material is directly bonded to the outer surface of the pipe, which is insufficient in terms of waterproofing and corrosion resistance. It is easy for moisture and corrosive substances to enter, reducing the insulation effect and even damaging the pipe structure. Utility Model Content

[0004] The present invention aims to solve the technical problems that the pipe insulation structure in the above-mentioned prior art has poor mechanical strength, is easily damaged when subjected to external environmental pressure and impact, and has insufficient waterproofing and corrosion resistance.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A tubular thermal insulation cotton for oil and gas pipelines, comprising a tubular thermal insulation sleeve, the thermal insulation sleeve being provided with an opening, the thermal insulation sleeve being sleeved on the outer side of the oil and gas pipeline from the opening, the thermal insulation sleeve comprising an inner thermal insulation layer, a support layer, an outer thermal insulation layer, a waterproof layer and an outer layer arranged in sequence from the inside to the outside;

[0007] A sealant layer A is provided on the inner side of the inner insulation layer;

[0008] One end of the outer layer is provided with an extension portion A protruding outward from the inner insulation layer, the support layer, and the waterproof layer, and the outer layer is provided with a connection portion for two adjacent insulation sleeves; an extension portion B and an extension portion C are provided on the outer layer and on both sides of the opening;

[0009] The inner sides of extension part A, extension part B and extension part C are respectively provided with a sealant layer B. Extension part A is bonded to the outer side of the adjacent insulation sleeve through the sealant layer B thereon. Extension part B is bonded to the outer side of the opening and the blank position of the waterproof layer through the sealant layer B thereon. Extension part C is bonded to the outer side of extension part B through the sealant layer B thereon.

[0010] Preferably, the inner side of the sealant layer A is bonded with release paper A. The inner insulation layer is bonded to the outer side of the oil and gas pipeline by tearing off the release paper A. The release paper A prevents the inner insulation layer from being adhered to the outer side of the oil and gas pipeline before installation, making it easier for construction workers to operate.

[0011] Preferably, the inner side surfaces of the sealant layer B on the extension part A, the extension part B, and the extension part C are adhered with release paper B to protect the sealant layer B.

[0012] Preferably, the support layer is a metal mesh bonded to the outside of the inner insulation layer for supporting the entire insulation sleeve. The metal mesh provides additional support and increases the impact resistance and compressive strength of the insulation sleeve.

[0013] Preferably, the inner end of the outer insulation layer is inserted into the mesh holes of the metal mesh and bonded to the outer side surfaces of the inner insulation layer and the metal mesh.

[0014] Preferably, the outer insulation layer is glass fiber wool, rock wool, ceramic fiber wool, glass fiber aerogel felt, ceramic fiber aerogel felt or rock wool aerogel felt.

[0015] Preferably, the waterproof layer is a waterproof and breathable membrane that prevents water from penetrating. The waterproof and breathable membrane can effectively prevent water from entering the outer insulation layer, thereby preventing the degradation of thermal insulation performance and structural damage caused by moisture.

[0016] Compared with the existing technology, the technical effects and advantages of the utility model are: a sealant layer A is provided on the inner side of the inner insulation layer of the tubular thermal insulation cotton used for oil and gas pipelines, and the sealant layer A can provide better sealing, reduce heat loss through the joint between the thermal insulation sleeve and the oil and gas pipeline, and through the bonding effect, it is more convenient to install the thermal insulation sleeve.

[0017] The design of the outer layer's extensions A, B, and C allows for better docking of adjacent insulation sleeves, enhancing overall structural stability. The use of sealant layer B ensures a tight seal at the joints, preventing moisture and air infiltration. Extensions B and C form a double seal at the opening, enhancing sealing performance. The presence of release liners A and B facilitates positioning and bonding during installation, improving construction efficiency. The release liners protect the sealant layer from contamination and premature bonding during transportation and storage.

[0018] The supporting layer is a metal mesh, which provides additional support to make the insulation sleeve more solid and durable. The bonding of the metal mesh and the inner insulation layer increases the stability of the interface.

[0019] The inner and outer insulation layers use high-efficiency insulation materials such as glass wool and rock wool to improve the insulation effect. The inner end of the outer insulation layer is inserted into the grid holes of the metal mesh and bonded, which simplifies the installation process.

[0020] The waterproof and breathable membrane of the waterproof layer prevents water from entering the outer insulation layer while allowing internal moisture to escape, keeping the outer insulation layer dry. The waterproof layer helps prevent the insulation material from getting wet and extends its service life.

[0021] In summary, the tubular thermal insulation cotton for oil and gas pipelines fully considers multiple factors such as thermal insulation, installation, sealing and waterproofing, and greatly improves the performance and durability of the oil and gas pipeline insulation system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the utility model;

[0023] Figure 2 This is a diagram showing the state after the extension part B and the extension part C of the utility model are bonded;

[0024] Figure 3 For this utility model Figure 1 The main schematic diagram of

[0025] Figure 4 This is a structural diagram of the support layer of the utility model.

[0026] In the figure: 100, insulation sleeve; 200, opening; 1, inner insulation layer; 2, support layer; 3, outer insulation layer; 4, waterproof layer; 401, blank position; 5, outer layer; 501, extension part A; 502, extension part B; 503, extension part C; 504, sealant layer B; 6, sealant layer A. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0028] The following is combined with Figure 1-4 To further explain this application,

[0029] The present application discloses a tubular thermal insulation cotton for oil and gas pipelines, including a tubular thermal insulation sleeve 100, which is provided with an opening 200. The thermal insulation sleeve 100 is placed on the outer side of the oil and gas pipeline from the opening 200. The thermal insulation sleeve 100 includes an inner thermal insulation layer 1, a support layer 2, an outer thermal insulation layer 3, a waterproof layer 4, and an outer layer 5, which are arranged in sequence from the inside to the outside.

[0030] The inner side of the inner insulation layer 1 is provided with a sealant layer A6, the inner side of which is adhered with release paper A. By tearing off the release paper A, the inner insulation layer 1 is bonded to the outer side of the oil and gas pipeline. The release paper A prevents premature adhesion of the inner insulation layer 1 before installation, facilitating installation and ensuring accurate bonding. During transportation and storage, the release paper A protects the sealant layer A6 from contamination or damage, ensuring effective bonding.

[0031] Support layer 2 is a metal mesh bonded to the outside of inner insulation layer 1, used to support the entire insulation sleeve 100. The metal mesh provides additional support, increasing the impact and compressive strength of insulation sleeve 100. The bonding of the metal mesh to inner insulation layer 1 improves the stability of the overall structure.

[0032] The inner end of the outer insulation layer 3 is inserted into the mesh of the metal mesh and bonded to the outer side of the inner insulation layer 1 and the metal mesh. The inner insulation layer 1 and the outer insulation layer 3 are made of glass fiber wool, rock wool, ceramic fiber wool, glass fiber aerogel felt, ceramic fiber aerogel felt, or rock wool aerogel felt. Inserting and bonding the outer insulation layer 3 into the mesh of the metal mesh better secures it to the insulation felt and metal mesh, reducing thermal bridging and improving thermal insulation performance. The outer insulation layer 3 allows for selection of the most suitable insulation material based on different application requirements and environmental conditions.

[0033] The waterproof layer 4 is a waterproof, breathable membrane that prevents moisture from penetrating. This membrane effectively blocks moisture from entering the outer insulation layer 3, preventing moisture-induced degradation of insulation performance and structural damage. It also keeps the interior of the outer insulation layer 3 dry, improving the durability and thermal insulation effectiveness of the insulation material.

[0034] The outer layer 5 is made of aluminum foil. One end of the outer layer 5 is provided with an extension portion A501 protruding outward from the inner insulation layer 1, the support layer 2, and the waterproof layer 4. The outer layer 5 is provided with an extension portion A501 for mating two adjacent insulation sleeves 100. The outer layer 5 is provided with an extension portion B502 and an extension portion C503 on both sides of the opening 200.

[0035] The inner sides of the extension part A501, the extension part B502 and the extension part C503 are respectively provided with a sealing glue layer B504. The extension part A501 is bonded to the outer side surface of the adjacent insulation sleeve 100 through the sealing glue layer B504 thereon. The extension part B502 is bonded to the outer side surface of the opening 200 and the blank position 401 of the waterproof layer 4 through the sealing glue layer B504 thereon. The extension part C503 is bonded to the outer side surface of the extension part B502 through the sealing glue layer B504 thereon.

[0036] Extension A501 allows adjacent insulation sleeves 100 to seamlessly connect, reducing thermal bridges and improving overall insulation. Extensions B502 and C503 ensure that opening 200 also maintains excellent insulation, preventing heat loss through opening 200. The sealant layer B504 provides a strong bond and effectively seals the joints of the insulation sleeves 100, preventing the intrusion of moisture and corrosive substances, ensuring the integrity and durability of the insulation structure.

[0037] Release paper B is adhered to the inner side of the sealant layer B504 on extensions A501, B502, and C503. Release paper B on extensions A501, B502, and C503 also protects sealant layer B504. Removing the release paper during construction ensures effective adhesion of sealant layer B504, creating a good seal. The presence of release paper B simplifies construction and reduces the possibility of errors.

[0038] The tubular thermal insulation cotton used for oil and gas pipelines has an inner insulation layer 1 with excellent thermal insulation performance, which can effectively reduce heat loss or external heat intrusion, and is crucial for oil and gas pipelines that need to maintain temperature. The provision of the support layer 2 increases the mechanical strength of the thermal insulation sleeve 100, enabling it to withstand the pressure and impact of the external environment and ensure long-term stable operation. The multi-layer structure design of the outer insulation layer 3, the waterproof layer 4 and the outer layer 5 not only ensures the thermal insulation effect, but also provides waterproof and anti-corrosion protection, extending the service life of the pipeline. The opening 200 design allows the thermal insulation sleeve 100 to be easily put on the pipeline, and the design of the extension part A501, the extension part B502 and the extension part C503 allows for close connection between the thermal insulation sleeves 100 and the opening 200 part, reducing the difficulty of installation and facilitating future maintenance and inspection.

[0039] 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 replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tubular thermal insulation cotton for oil and gas pipelines, characterized in that: The invention comprises a thermal insulation sleeve (100) of a tubular structure, wherein the thermal insulation sleeve (100) is provided with an opening (200), and the thermal insulation sleeve (100) is sleeved on the outer side of the oil and gas pipeline from the position of the opening (200). The thermal insulation sleeve (100) comprises an inner thermal insulation layer (1), a support layer (2), an outer thermal insulation layer (3), a waterproof layer (4), and an outer layer (5) which are sequentially arranged from the inside to the outside. A sealing adhesive layer A (6) is provided on the inner side of the inner thermal insulation layer (1); One end of the outer layer (5) is provided with an extension portion A (501) protruding outward from the inner thermal insulation layer (1), the support layer (2), and the waterproof layer (4); the outer layer (5) is provided with a joint for cooperating with two adjacent thermal insulation sleeves (100); an extension portion B (502) and an extension portion C (503) are respectively provided on the outer layer (5) and located on both sides of the opening (200); The inner side surfaces of the extension portion A (501), the extension portion B (502) and the extension portion C (503) are respectively provided with a sealing adhesive layer B (504); the extension portion A (501) is bonded to the outer side surface of the adjacent thermal insulation sleeve (100) through the sealing adhesive layer B (504) thereon; the extension portion B (502) is bonded to the outer side surface of the opening (200) and the blank position (401) of the waterproof layer (4) through the sealing adhesive layer B (504) thereon; and the extension portion C (503) is bonded to the outer side surface of the extension portion B (502) through the sealing adhesive layer B (504) thereon.

2. The tubular thermal insulation cotton for oil and gas pipelines according to claim 1, characterized in that: The inner side of the sealant layer A (6) is bonded with release paper A, and the inner insulation layer (1) is bonded and sleeved on the outer side of the oil and gas pipeline by tearing off the release paper A.

3. The tubular thermal insulation cotton for oil and gas pipelines according to claim 1, characterized in that: Release paper B is bonded to the inner side surfaces of the sealant layer B (504) on the extension part A (501), the extension part B (502) and the extension part C (503).

4. The tubular thermal insulation cotton for oil and gas pipelines according to claim 1, characterized in that: The supporting layer (2) is a metal mesh used to support the entire thermal insulation sleeve (100) and bonded to the outside of the inner thermal insulation layer (1).

5. The tubular thermal insulation cotton for oil and gas pipelines according to claim 4, characterized in that: The inner end of the outer thermal insulation layer (3) is inserted into the mesh holes of the metal mesh and is bonded to the outer side surfaces of the inner thermal insulation layer (1) and the metal mesh.

6. The tubular thermal insulation cotton for oil and gas pipelines according to claim 5, characterized in that: The inner thermal insulation layer (1) and the outer thermal insulation layer (3) are made of glass fiber wool, rock wool, ceramic fiber wool, glass fiber aerogel felt, ceramic fiber aerogel felt or rock wool aerogel felt.

7. The tubular thermal insulation cotton for oil and gas pipelines according to claim 1, characterized in that: The waterproof layer (4) is a waterproof and breathable membrane that prevents water from penetrating.

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