CN223622450U - Prefabricated overhead composite heat-insulating pipe with long service life - Google Patents
Prefabricated overhead composite heat-insulating pipe with long service lifeInfo
- Publication number
- CN223622450U CN223622450U CN202520043346.3U CN202520043346U CN223622450U CN 223622450 U CN223622450 U CN 223622450U CN 202520043346 U CN202520043346 U CN 202520043346U CN 223622450 U CN223622450 U CN 223622450U
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Abstract
The utility model discloses a prefabricated overhead composite heat-insulating pipe with long service life, which comprises a working steel pipe, a soft buffer layer, an inorganic hard heat-insulating pipe and an outer protecting pipe which are coaxial with each other, wherein the soft buffer layer is coated outside the working steel pipe, a plurality of inorganic hard heat-insulating pipes are sleeved outside the soft buffer layer after being connected end to end, the outer protecting pipe is sleeved outside the inorganic hard heat-insulating pipe, a polyurethane heat-insulating layer is filled between the outer protecting pipe and the inorganic hard heat-insulating pipe, a hoop is sleeved outside the outer protecting pipe, and the hoop is fixedly connected with a buttress arranged below the outer protecting pipe. According to the utility model, the soft buffer layer is arranged between the working steel pipe and the inorganic hard heat-insulating pipe, and can play a role in buffering expansion and contraction of the working steel pipe, so that the inorganic hard heat-insulating pipe is prevented from being broken when the working steel pipe is expanded by heating, the service life of the prefabricated overhead composite heat-insulating pipe is prolonged, and the conveying cost of high-temperature liquid, gas and other mediums is reduced.
Description
Technical Field
The utility model relates to a sliding prefabricated overhead composite heat-insulating pipe for conveying high-temperature liquid, gas and other mediums, and belongs to the technical field of conveying.
Background
The heat preservation pipeline is used for conveying liquid, gas and other mediums, and is widely applied to heat insulation and heat preservation engineering of petrochemical industry, central heating, central air conditioning, municipal pipelines and the like. The utility model patent with the application number of CN202221221937.8 discloses a prefabricated overhead pipeline composite heat-insulating structure for conveying high-temperature heat media, which comprises a plurality of ceramic fiber pipes which are prepared by mixing ceramic fibers, inorganic adhesive and water and then centrifugally drying in a mould, wherein the ceramic fiber pipes are sequentially connected end to end through a socket structure, and the outer side of each ceramic fiber pipe is provided with an integral polyurethane heat-insulating layer. The ceramic fiber pipe is sleeved into the working steel pipe and can slide smoothly, a socket sleeved with a high-temperature-resistant sealing ring is inserted into a socket of an adjacent ceramic fiber pipe, the socket type ceramic fiber pipe and the adjacent socket type ceramic fiber pipe or the socket type high-strength ceramic fiber pipe are connected together in a socket type manner to form an integrated inorganic heat-insulating layer, the polyurethane heat-insulating layer is produced by adopting a pipe-in-pipe production process, and the outer protecting pipe and the ceramic fiber pipe heat-insulating layer are respectively bonded with the polyurethane heat-insulating layer to form a three-in-one structure with heat insulation and waterproof functions. The heat-insulating pipe has the following defects:
1. The inner diameter of the ceramic fiber pipe is consistent with the outer diameter of the working steel pipe, when a heat medium is conveyed, the diameter of the working steel pipe is increased after the working steel pipe is heated and expanded, the inner wall of the ceramic fiber pipe is extruded, cracks or other damages to the ceramic fiber pipe are easy to occur, and the service life of the heat preservation pipeline is seriously influenced.
2. When the heat medium is conveyed, the diameter of the working steel pipe is increased, the ceramic fiber pipe is tensioned, and meanwhile, axial displacement can also occur, and at the moment, the working steel pipe can apply great axial friction force to the ceramic fiber pipe, so that a relief and even detachment occur between adjacent ceramic fiber pipes, and further, the carbonization phenomenon of the polyurethane heat insulation layer is initiated, the heat insulation performance of the polyurethane heat insulation layer is reduced, the service life of the heat insulation pipeline is shortened, and the conveying cost of mediums such as high-temperature liquid, gas and the like is increased.
Disclosure of utility model
The utility model aims at overcoming the defects of the prior art and providing a prefabricated overhead composite heat-insulating pipe with long service life so as to reduce the conveying cost of high-temperature liquid, gas and other mediums.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
The utility model provides a long service life's prefabricated built on stilts compound insulating tube, includes coaxial work steel pipe, soft buffer layer, inorganic stereoplasm insulating tube and outer pillar each other, soft buffer layer cladding is outside at the work steel pipe, and the outside at soft buffer layer is overlapped to a plurality of inorganic stereoplasm insulating tube head and tail connection back cover, outer pillar suit is outside at inorganic stereoplasm insulating tube, and it has the polyurethane heat preservation to fill between outer pillar and inorganic stereoplasm insulating tube, and the outside cover of outer pillar is equipped with the staple bolt, staple bolt and the buttress fixed connection of setting in outer pillar below.
The prefabricated overhead composite heat-insulating pipe with long service life is characterized in that a reflecting layer is arranged between the soft buffer layer and the inorganic hard heat-insulating pipe.
Above-mentioned long service life's prefabricated built on stilts compound insulating tube, be provided with the multiunit support frame of arranging along its axial equidistant in the polyurethane heat preservation, a plurality of support frames in every group support frame are around inorganic stereoplasm insulating tube evenly distributed, and the outer end of support frame supports on the inner wall of outer pillar, and the inner supports on the outer wall of inorganic stereoplasm insulating tube.
Above-mentioned long service life's prefabricated built on stilts compound insulating tube, the one end of every inorganic stereoplasm insulating tube is equipped with cylindric boss, and the other end is equipped with boss assorted recess, and the boss of every inorganic stereoplasm insulating tube inserts in the recess of adjacent inorganic stereoplasm insulating tube and bonds together through the sealant.
The prefabricated overhead composite heat-insulating pipe with the long service life comprises an inner layer and an outer layer, wherein the inner layer is aluminum foil, and the outer layer is glass fiber.
The prefabricated overhead composite heat-insulating pipe with the long service life is characterized in that the side wall of the outer protective pipe is provided with polyurethane injection holes, and the polyurethane injection holes are sealed through hot melt plugging.
The prefabricated overhead composite heat-insulating pipe with the long service life is characterized in that the soft buffer layer is an aerogel felt or an aluminum silicate needled blanket.
The prefabricated overhead composite heat-insulating pipe with long service life is characterized in that the outer protective pipe is a spiral air pipe or a polyethylene sleeve.
According to the utility model, the soft buffer layer is arranged between the working steel pipe and the inorganic hard heat-insulating pipe, and can play a role in buffering expansion and contraction of the working steel pipe, so that the inorganic hard heat-insulating pipe is prevented from being broken when the working steel pipe is expanded by heating, the service life of the prefabricated overhead composite heat-insulating pipe is prolonged, and the conveying cost of high-temperature liquid, gas and other mediums is reduced.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic illustration of the connection of adjacent inorganic rigid insulating pipes;
FIG. 3 is a schematic diagram of the distribution of the support frame around the inorganic hard insulating pipe;
Fig. 4 is a schematic installation view of the present utility model.
The drawing comprises the following components of a reflecting layer 1, a working steel pipe 3, a soft buffer layer 4, an inorganic hard heat-insulating pipe 4-1, a boss 4-2, a groove 5, a supporting frame 6, a hot melt plug 7, a polyurethane heat-insulating layer 8, an outer protecting pipe 9, a hoop 10, a prefabricated overhead composite heat-insulating pipe 11 and a supporting pier.
Detailed Description
Referring to fig. 1-4, the utility model mainly comprises a working steel pipe 2, and a soft buffer layer 3, a reflecting layer 1, an inorganic hard heat-insulating pipe 4, a polyurethane heat-insulating layer 7 and an outer protecting pipe 8 which are sleeved outside the working steel pipe 2 in sequence from inside to outside.
The working steel pipe 2 is used for conveying high-temperature liquid, gas and other mediums, the outer surface of the working steel pipe is coated with a layer of soft buffer layer 3 in a bundling mode, the soft buffer layer 3 is made of soft heat insulation materials such as aerogel felts, aluminum silicate needled carpets and the like, the buffer effect is achieved on expansion caused by heat and contraction caused by cold of the working steel pipe 2, the inorganic hard heat insulation pipe 4 is prevented from being applied with larger radial force when the working steel pipe 2 is heated and expanded, the safety of the inorganic hard heat insulation pipe 4 is protected, and the service life of the inorganic hard heat insulation pipe 4 is prolonged. The outer surface of the soft buffer layer 3 is coated with a reflecting layer 1, the soft buffer layer 3 is sleeved with a plurality of inorganic hard heat-insulating pipes 4, the inorganic hard heat-insulating pipes 4 are sequentially connected end to end in an adhering mode, a gap between the inorganic hard heat-insulating pipe 4 and the outer protective pipe 8 is filled with a polyurethane heat-insulating layer 7, a supporting frame 5 is arranged in the polyurethane heat-insulating layer 7, and the supporting frame 5 is propped against the outer protective pipe 8 and the inorganic hard heat-insulating pipe 4.
The reflecting layer 1 comprises an inner layer and an outer layer, the inner layer (namely, the part contacted with the soft buffer layer 3) is aluminum foil, the heat loss caused by high-temperature radiation can be reduced, the outer layer is a glass fiber layer, the surface is smooth, the axial friction force between the inorganic hard heat-insulating pipe 4 and the soft buffer layer 3 can be reduced, the occurrence of a relief between the adjacent inorganic hard heat-insulating pipes is prevented, the carbonization phenomenon of the polyurethane heat-insulating layer 7 is avoided, the service life of the heat-insulating pipe is prolonged, and the conveying cost of high-temperature liquid, gas and other mediums is reduced.
Referring to fig. 2, adjacent inorganic hard heat-insulating pipes 4 are connected together end to end in turn in an inserting manner, one end of each inorganic hard heat-insulating pipe 4 is provided with a cylindrical boss 4-1, the other end is provided with a groove 4-2 matched with the boss 4-1, and the boss 4-1 of each inorganic hard heat-insulating pipe 4 is inserted into the groove 4-2 of the adjacent inorganic hard heat-insulating pipe 4 and is bonded together by adopting high-temperature-resistant sealant, so that axial seamless splicing is realized, and the sealing effect is good.
Referring to fig. 1, a polyurethane injection hole is provided on the sidewall of the outer protection tube 8, and a polyurethane insulation layer 7 can be formed by injecting polyurethane, and the injection hole is sealed by a hot melt plug 6 at a later stage.
The outer protective tube 8 adopts a spiral air tube or a polyethylene sleeve.
Referring to fig. 4, the prefabricated overhead composite heat-insulating pipe 10 is supported by the buttresses 11, and the hoop 9 is arranged outside the prefabricated overhead composite heat-insulating pipe 10 and fixedly connected with the buttresses 11.
The utility model has the advantages that:
The polyurethane heat-insulating layer 7 tightly bonds the inorganic hard heat-insulating pipe 4 and the outer protective pipe 8 together to form a three-in-one structure, the heat-insulating layer and the outer protective pipe do not move in the operation process of the pipeline, only the working steel pipe 2 moves, the pipe network operates more stably, the inorganic hard heat-insulating pipe 4 has uniform thickness, no layer-by-layer wrapping is needed, and the production process is simple.
The inorganic hard heat-insulating pipe 4 is integrally formed, the axial direction is free of lap joints, adjacent heat-insulating pipe shells are bonded together by adopting an adhesive, the annular direction is free of lap joints, the inorganic hard heat-insulating pipe 4 is integrally connected in a seamless mode, the possibility of radiating heat from a gap is reduced, and the energy-saving effect is more obvious.
The soft buffer layer 3 is added, so that the inorganic hard heat-insulating pipe 4 is not damaged due to the fact that the inorganic hard heat-insulating pipe 4 is extruded by a large force after the working steel pipe 2 is expanded at high temperature;
The aluminum foil reflecting layer 1 is arranged between the soft buffer layer 3 and the inorganic hard heat-insulating pipe 4, so that the friction force between the inorganic hard heat-insulating pipe 4 and the soft buffer layer 3 can be reduced, the relative displacement of the working steel pipe 2 caused by thermal expansion and cold contraction is smoother, the internal sliding is truly realized, and the bearing of the buttress 11 for supporting the whole heat-insulating pipe is reduced, so that the pipe network operation is safer.
The buttress 11 is contacted with the outer protective tube 8 of the prefabricated overhead composite heat-insulating tube 10 through the anchor ear 9 instead of being directly contacted with the working steel tube 2, so that the heat bridge effect is reduced, the heat loss is less, and the energy-saving effect is better.
Claims (8)
1. The utility model provides a long service life's prefabricated built on stilts compound insulating tube, characterized by, including coaxial work steel pipe (2), soft buffer layer (3), inorganic stereoplasm insulating tube (4) and outer pillar (8) each other, soft buffer layer (3) cladding is outside work steel pipe (2), and suit is outside in soft buffer layer (3) after a plurality of inorganic stereoplasm insulating tube (4) head-to-tail connection, outer pillar (8) suit is outside inorganic stereoplasm insulating tube (4), is filled with polyurethane heat preservation (7) between outer pillar (8) and inorganic stereoplasm insulating tube (4), and the outside cover of outer pillar (8) is equipped with staple bolt (9), staple bolt (9) and buttress (11) fixed connection of setting in outer pillar (8) below.
2. The prefabricated overhead composite insulation pipe with the long service life according to claim 1 is characterized in that a reflecting layer (1) is arranged between the soft buffer layer (3) and the inorganic hard insulation pipe (4).
3. The prefabricated overhead composite heat-insulating pipe with long service life according to claim 1 or 2, wherein a plurality of groups of support frames (5) are arranged in the polyurethane heat-insulating layer (7) at equal intervals along the axial direction of the polyurethane heat-insulating layer, the plurality of support frames (5) in each group of support frames (5) are uniformly distributed around the inorganic hard heat-insulating pipe (4), the outer ends of the support frames (5) are propped against the inner wall of the outer protective pipe (8), and the inner ends of the support frames are propped against the outer wall of the inorganic hard heat-insulating pipe (4).
4. A prefabricated overhead composite insulation pipe with long service life according to claim 3, characterized in that one end of each inorganic hard insulation pipe (4) is provided with a cylindrical boss (4-1), the other end is provided with a groove (4-2) matched with the boss (4-1), and the boss (4-1) of each inorganic hard insulation pipe (4) is inserted into the groove (4-2) of the adjacent inorganic hard insulation pipe (4) and is bonded together through sealant.
5. The prefabricated overhead composite heat-insulating pipe with the long service life according to claim 2, wherein the reflecting layer (1) comprises an inner layer and an outer layer, the inner layer is aluminum foil, and the outer layer is glass fiber.
6. The prefabricated overhead composite insulation pipe with long service life according to claim 4, wherein polyurethane injection holes are formed in the side wall of the outer protection pipe (8), and the polyurethane injection holes are sealed through hot melt plugs (6).
7. The prefabricated overhead composite insulation pipe with the long service life according to claim 1, wherein the soft buffer layer (3) is an aerogel felt or an aluminum silicate needled blanket.
8. The prefabricated overhead composite insulation pipe with long service life according to claim 1, wherein the outer protection pipe (8) is a spiral air pipe or a polyethylene sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520043346.3U CN223622450U (en) | 2025-01-09 | 2025-01-09 | Prefabricated overhead composite heat-insulating pipe with long service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202520043346.3U CN223622450U (en) | 2025-01-09 | 2025-01-09 | Prefabricated overhead composite heat-insulating pipe with long service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223622450U true CN223622450U (en) | 2025-12-02 |
Family
ID=97817400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202520043346.3U Active CN223622450U (en) | 2025-01-09 | 2025-01-09 | Prefabricated overhead composite heat-insulating pipe with long service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223622450U (en) |
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2025
- 2025-01-09 CN CN202520043346.3U patent/CN223622450U/en active Active
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