CN116066634A - Detachable prefabricated heat preservation pipe - Google Patents
Detachable prefabricated heat preservation pipe Download PDFInfo
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- CN116066634A CN116066634A CN202310005459.XA CN202310005459A CN116066634A CN 116066634 A CN116066634 A CN 116066634A CN 202310005459 A CN202310005459 A CN 202310005459A CN 116066634 A CN116066634 A CN 116066634A
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- 238000004321 preservation Methods 0.000 title claims description 44
- 239000010410 layer Substances 0.000 claims abstract description 227
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 92
- 239000010959 steel Substances 0.000 claims abstract description 92
- 239000011810 insulating material Substances 0.000 claims abstract description 17
- 230000000712 assembly Effects 0.000 claims abstract description 16
- 238000000429 assembly Methods 0.000 claims abstract description 16
- 238000005187 foaming Methods 0.000 claims abstract description 12
- 239000011241 protective layer Substances 0.000 claims abstract description 5
- 238000009413 insulation Methods 0.000 claims description 73
- 230000003014 reinforcing effect Effects 0.000 claims description 17
- 239000012774 insulation material Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- 239000011888 foil Substances 0.000 claims description 8
- 229920000582 polyisocyanurate Polymers 0.000 claims description 6
- 239000011495 polyisocyanurate Substances 0.000 claims description 6
- 229920002635 polyurethane Polymers 0.000 claims description 6
- 239000004814 polyurethane Substances 0.000 claims description 6
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 5
- 239000011491 glass wool Substances 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 4
- 239000004964 aerogel Substances 0.000 claims description 4
- 239000010962 carbon steel Substances 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 239000003365 glass fiber Substances 0.000 claims description 4
- 229910000680 Aluminized steel Inorganic materials 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- 238000009826 distribution Methods 0.000 abstract description 4
- 238000005728 strengthening Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 229910052918 calcium silicate Inorganic materials 0.000 description 3
- 239000000378 calcium silicate Substances 0.000 description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/021—Shape or form of insulating materials, with or without coverings integral with the insulating materials comprising a single piece or sleeve, e.g. split sleeve, two half sleeves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/029—Shape or form of insulating materials, with or without coverings integral with the insulating materials layered
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The detachable prefabricated heat-insulating pipe is characterized by being formed by directly assembling a plurality of heat-insulating pipe assemblies, wherein the assemblies comprise main components such as an inner heat-insulating layer, a soft heat-insulating layer, a reflecting layer, a foaming heat-insulating material layer, an outer protective layer, a steel skeleton and the like; the steel skeleton has the protruding strengthening rib structure inwards, and the radial and axial terminal surfaces of pipeline assembly piece form the stairstepping and connect. The invention solves the difficult problems of inconvenient transportation and pipe gallery construction of the integrally-assembled prefabricated pipeline, has the advantage of modularization, and can prevent the soft heat-insulating material from sinking, collapsing and uneven distribution on the basis of not reducing the structural strength of the heat-insulating pipeline. The invention can reduce the material cost of the heat-insulating pipeline, improve the safety margin of stress, enhance the heat-insulating and energy-saving effects and improve the construction quality and efficiency.
Description
Technical Field
The invention relates to the technical field of thermal pipeline heat preservation, in particular to a detachable prefabricated heat preservation pipe.
Background
In the fields of petrochemical industry, electric power, metallurgy and other industrial enterprises and urban central heating, heat supply and the like, various heat mediums such as liquid, gas (steam) and the like are often required to meet the production and daily life of enterprises, the heat mediums have certain quality, the parameters such as temperature, pressure, flow and the like are required to meet the expected requirements, and in order to reduce the heat loss of the heat mediums in the conveying process, heat preservation and heat insulation measures are required to be adopted for conveying pipelines.
The prefabricated heat-insulating pipeline can reduce the workload of on-site manufacturing and installation, is convenient for the quality, the progress and the management and control of the pipeline construction, and has the promotion and improvement effects on the success of the whole project flow; however, the prefabricated pipes are large in occupied space, so that the transportation process and the on-site lifting, welding, installing, repairing and other processes of the pipe gallery are inconvenient, and even collision, friction and impact between the outer wall and the end of the heat-insulating pipe and pipe gallery components can occur, so that the strength and the heat-insulating effect of the prefabricated heat-insulating pipe are reduced, and the safety and energy-saving requirements and acceptance of projects are influenced.
The microporous calcium silicate hard heat-insulating material is widely applied to the field of pipeline heat insulation, but the price of the microporous calcium silicate hard heat-insulating material is higher than that of common soft heat-insulating materials (high-temperature glass wool, aluminum silicate needled carpets and the like); the density is high, the quality is large, the whole heat insulation pipeline is heavy, and the heat insulation performance is slightly lower than that of a soft heat insulation material; when the calcium silicate heat-insulating tile is installed and constructed, the problems of many joints and seams commonly exist, and the heat-insulating effect is affected.
Disclosure of Invention
The invention aims to design a detachable heat-insulating structure aiming at the problem that the construction progress and heat-insulating quality are affected because the existing heat-insulating layer of the pipeline cannot be installed in the existing block, so that the development of each construction procedure of a prefabricated heat-insulating pipeline is facilitated; in order to reduce the economic cost of the hard heat-insulating material and alleviate the defects of more seams and joints of the hard heat-insulating material, the invention adopts the alternative technical means of soft heat-insulating materials (high-temperature glass wool, aluminum silicate fiber and the like); meanwhile, in order to prevent the soft heat-insulating material from collapsing, sinking, uneven distribution and the like, the invention adopts a reinforcing measure of adding a steel skeleton in the heat-insulating layer.
The technical scheme of the invention is as follows:
a detachable prefabricated insulating pipe, which is characterized by comprising the following parts: a plurality of insulated pipe assemblies; the assembly comprises an inner heat preservation layer 1, a first soft heat preservation layer 2, a second soft heat preservation layer 3, a third soft heat preservation layer 4, a first reflecting layer 5, a second reflecting layer 6, a third reflecting layer 7, a fourth reflecting layer 8, a foaming heat preservation material layer 9, an outer protection layer 10 and a steel skeleton 11; the heat insulation layer 1 is an inner heat insulation layer, the steel skeleton 11 is arranged on the outer side of the inner heat insulation layer 1, the first reflecting layer 5 is arranged on the outer side of the steel skeleton 11, the first soft heat insulation layer 2 is arranged on the outer side of the first reflecting layer 5, the second reflecting layer 6 is arranged on the outer side of the first soft heat insulation layer 2, the second soft heat insulation layer 3 is arranged on the outer side of the second reflecting layer 6, the third reflecting layer 7 is arranged on the outer side of the second soft heat insulation layer 3, the third soft heat insulation layer 4 is arranged on the outer side of the third reflecting layer 7, and the fourth reflecting layer 8 is arranged on the outer side of the third soft heat insulation layer 4; the outer side of the fourth reflecting layer 8 is provided with a foaming heat-insulating material layer 9; the outermost side of the assembly is an outer sheath 10; the radial and axial end surfaces of the inner and outer layer heat insulation materials of the assembly form a stepped joint structure.
The detachable prefabricated soft heat preservation pipe is formed by splicing 2 pipe assemblies, 3 pipe assemblies or 4 pipe assemblies with the same size.
The steel skeleton 11 has axial steel bars and circumferential steel bars 11-2; the axial steel bars comprise two end axial steel bars 11-3 distributed along the circumferential direction of the steel skeleton 11 and a plurality of other axial steel bars 11-1 uniformly distributed along the circumferential direction; the circumferential steel bars 11-2 are uniformly distributed along the axial direction of the steel skeleton 11.
The two end axial steel bars 11-3 distributed along the circumferential direction of the steel skeleton 11 are not provided with reinforcing rib structures, and the rest of the axial steel bars 11-1 uniformly distributed along the circumferential direction are provided with reinforcing rib structures, the protrusions face inwards, and the protrusions are embedded into the inner heat insulation layer 1.
The edge of the inner heat preservation layer 1 is provided with a 45-degree groove, so that the inner heat preservation layer is convenient to wrap and lap, and heat loss of heat outside through radial gaps is reduced.
The first reflecting layer 5, the second reflecting layer 6, the third reflecting layer 7 and the fourth reflecting layer 8 are all aluminum foil glass fiber cloth, and the aluminum foil reflecting layers face inwards and face a heat source; the first reflecting layer 5, the second reflecting layer 6, the third reflecting layer 7 and the fourth reflecting layer 8 are all in spiral and staggered wrapping states; the amount of misalignment is not less than 30 mm.
The edges of the first soft heat preservation layer 2, the second soft heat preservation layer 3 and the third soft heat preservation layer 4 are provided with 45-degree grooves, so that the first soft heat preservation layer, the second soft heat preservation layer and the third soft heat preservation layer are convenient to wrap and lap, and heat loss of heat outside through radial gaps is reduced.
Preferably, the material of the inner heat-insulating layer 1 is nano aerogel, and the thickness is 5-30 mm.
Preferably, the first soft heat-insulating layer 2, the second soft heat-insulating layer 3 and the third soft heat-insulating layer 4 are made of high-temperature glass wool or aluminum silicate needled blanket, and the thickness of each layer is 30-80 mm.
Preferably, the material of the foaming thermal insulation material layer 9 is Polyurethane (PUR) or Polyisocyanurate (PIR), and the thickness is 30-80 mm.
Preferably, the steel skeleton 11 is made of Q235 carbon steel, the thickness of the steel bar is 0.5-5.0 mm, the width of the steel bar is 10-50 mm, and the circumferential steel bars 11-2 are distributed at intervals of 150-400 mm along the axial direction; the axial bars 11-1 with the reinforcing ribs are distributed at an angular interval of 15-45 deg. in the arc-shaped bars according to the number of pipe assemblies.
Preferably, the height of each step of the stepped joint of the axial section of the assembly of the detachable prefabricated soft insulation tube is 30-50 mm; the width of each step of the stepped joint of the radial section of the assembly of the detachable prefabricated soft insulation pipe is 50-100 mm.
Preferably, the outer protective layer 10 is glass fiber reinforced plastic, aluminized steel sheet or color steel sheet.
The beneficial effects of the invention are as follows:
1. the detachable soft prefabricated heat-insulating pipeline can be directly spliced and installed on site between the self-contained prefabricated pipeline and the on-site production and construction, so that the construction characteristics of the prefabricated pipeline are reserved, the defects of inconvenient transportation and pipe gallery construction of the self-contained prefabricated pipeline are avoided, and the self-contained prefabricated pipeline has the advantage of modularization and can improve the construction quality and efficiency.
2. The soft heat-insulating material is adopted, so that the cost can be reduced, the problems of multiple seams and seams of the hard heat-insulating material are avoided, the heat conductivity coefficient is reduced, and the effect of the heat-insulating layer is improved.
3. The steel skeleton can improve the mechanical property of the soft heat-insulating pipe, avoid collapse, dent and uneven distribution of the soft heat-insulating material, ensure that the cross section of the soft heat-insulating layer keeps concentric circles as much as possible, and improve the heat-insulating effect of the soft heat-insulating pipe.
4. The reinforcing ribs of the axial steel bars increase the capacity of the steel bars in resisting load deformation, so that the thickness of the steel bars of the steel skeleton can be reduced, the weight is reduced, the materials are saved, the overall load of the heat-insulating pipeline is further reduced, and the stress safety margin is improved.
5. The reinforcing ribs are inwards protruded and embedded into the inner heat-insulating layer, so that the steel skeleton and the inner heat-insulating layer form an integral structure, the strength of the inner heat-insulating layer is increased, and collapse, sinking, uneven distribution and the like of the inner heat-insulating layer are avoided.
6. The structure of the stepped joint with the axial and radial tangential surfaces ensures that the gaps between the inner layer and the outer layer and the radial gap are staggered when the detachable prefabricated soft heat-insulating pipe assembly is spliced, thereby reducing heat to directly pass through the axial directionRadial directionAnd heat loss from the gaps to the outside is improved, and the heat preservation effect is improved.
Drawings
FIG. 1 is a schematic longitudinal section view of a detachable prefabricated soft insulation pipe of the present invention.
Fig. 2 is a schematic cross-sectional view of a removable prefabricated flexible insulating tube of the present invention consisting of two assemblies (semicircles).
Fig. 3 is a schematic cross-sectional view of a removable prefabricated flexible insulating tube assembly (semicircle) of the present invention.
Fig. 4 is a schematic cross-sectional view of a steel skeleton (semicircle) of the detachable prefabricated soft insulation pipe of the present invention.
Fig. 5 is a top view of a steel skeleton (semicircle) of the detachable prefabricated soft insulation pipe of the invention.
Fig. 6 is a schematic cross-sectional view of a removable prefabricated flexible insulating tube of the present invention consisting of three assemblies (one third circle).
Fig. 7 is a schematic cross-sectional view of a removable prefabricated flexible insulation tube assembly (one third circle) of the present invention.
Fig. 8 is a schematic cross-sectional view of a steel skeleton (one third circle) of the detachable prefabricated soft insulation pipe of the present invention.
Fig. 9 is a top view of a steel skeleton (one third circle) of the detachable prefabricated soft insulation pipe of the invention.
Reference numerals illustrate: 1. an inner insulation layer; 2. a soft heat-insulating layer; 3. a soft heat-insulating layer; 4. a soft heat-insulating layer; 5. a reflective layer; 6. a reflective layer; 7. a reflective layer; 8. a reflective layer; 9. foaming thermal insulation material layer; 10. an outer protective layer; 11. a steel skeleton; 11-1, an axial steel bar with reinforcing ribs; 11-2, circumferential steel bars; 11-3, an axial steel bar without reinforcing ribs.
Detailed Description
In order to make the technical problems, technical schemes and achieved beneficial effects to be solved more clear, the invention is further described in detail below with reference to the accompanying drawings and embodiments.
It should be noted that the structures, proportions, sizes, etc. shown in the drawings are merely for the purpose of understanding and reading the disclosure, and are not intended to limit the scope of the invention, which is defined by the appended claims.
Embodiment one:
as shown in fig. 1-5.
A detachable prefabricated insulating pipe comprising two insulating pipe assemblies; the assembly comprises an inner heat preservation layer 1, a first soft heat preservation layer 2, a second soft heat preservation layer 3, a third soft heat preservation layer 4, a first reflecting layer 5, a second reflecting layer 6, a third reflecting layer 7, a fourth reflecting layer 8, a foaming heat preservation material layer 9, an outer protection layer 10 and a steel skeleton 11; the heat insulation layer 1 is an inner heat insulation layer, the steel skeleton 11 is arranged on the outer side of the inner heat insulation layer 1, the first reflecting layer 5 is arranged on the outer side of the steel skeleton 11, the first soft heat insulation layer 2 is arranged on the outer side of the first reflecting layer 5, the second reflecting layer 6 is arranged on the outer side of the first soft heat insulation layer 2, the second soft heat insulation layer 3 is arranged on the outer side of the second reflecting layer 6, the third reflecting layer 7 is arranged on the outer side of the second soft heat insulation layer 3, the third soft heat insulation layer 4 is arranged on the outer side of the third reflecting layer 7, and the fourth reflecting layer 8 is arranged on the outer side of the third soft heat insulation layer 4; the outer side of the fourth reflecting layer 8 is provided with a foaming heat-insulating material layer 9; the outermost side of the assembly is an outer sheath 10; the radial and axial end surfaces of the inner and outer layer heat insulation materials of the assembly form a stepped joint structure. As shown in fig. 1 and 2.
In this embodiment, the detachable prefabricated soft insulation pipe is formed by splicing 2 assemblies with the same size, as shown in fig. 2.
In this embodiment, the steel skeleton 11 has axial steel bars and circumferential steel bars 11-2; the axial steel bars comprise two end axial steel bars 11-3 distributed along the circumferential direction of the steel skeleton 11 and a plurality of other axial steel bars 11-1 uniformly distributed along the circumferential direction; the circumferential steel bars 11-2 are uniformly distributed along the axial direction of the steel skeleton 11. As shown in FIG. 4
In this embodiment, the two end axial steel bars 11-3 of the steel skeleton 11 distributed along the circumferential direction are not provided with a reinforcing rib structure, the three other axial steel bars 11-1 distributed along the circumferential direction are provided with reinforcing rib structures, the protrusions face inwards (as shown in fig. 4), and the protrusions are embedded into the inner heat insulation layer 1.
In the embodiment, the edge of the inner heat-insulating layer 1 is provided with a 45-degree groove, so that the inner heat-insulating layer is convenient to wrap and lap, and heat loss of heat outwards through a radial gap is reduced.
In this embodiment, the first reflecting layer 5, the second reflecting layer 6, the third reflecting layer 7 and the fourth reflecting layer 8 are all aluminum foil glass fiber cloth, and the aluminum foil reflecting layers are all inward and face the heat source; the first reflecting layer 5, the second reflecting layer 6, the third reflecting layer 7 and the fourth reflecting layer 8 are all in spiral and staggered wrapping states; the amount of misalignment is 30 mm.
In this embodiment, the edges of the first soft insulating layer 2, the second soft insulating layer 3 and the third soft insulating layer 4 are provided with 45-degree grooves, which is convenient for wrapping and lapping, and reduces heat loss of heat from the radial gap to the outside.
In this embodiment, preferably, the material of the inner insulation layer 1 is nano aerogel, and the thickness is 20 mm.
In this embodiment, preferably, the materials of the first soft insulation layer 2, the second soft insulation layer 3 and the third soft insulation layer 4 are all high-temperature glass wool, and the thicknesses of the layers from inside to outside are 70/70/60 mm.
In this embodiment, the foamed heat insulation material layer 9 is preferably made of Polyisocyanurate (PIR) and has a thickness of 75 mm.
In this embodiment, preferably, the steel skeleton 11 is made of Q235 carbon steel, the thickness of the steel bar is 1.5 mm, the width is 25 mm, and the circumferential steel bars 11-2 are distributed at intervals of 400 mm along the axial direction; the axial bars 11-1 with the reinforcing ribs are distributed at an angular interval of 45 deg. in the arc-shaped bars.
In this embodiment, preferably, the height of each step of the stepped joint of the axial section of the assembly of the detachable prefabricated soft insulation tube is 35 mm; the width of each step of the stepped joint of the radial tangential plane of the assembly part of the detachable prefabricated soft insulation pipe is 50 mm.
In this embodiment, the outer sheath 10 is preferably glass fiber reinforced plastic.
Embodiment two:
as shown in fig. 1 and 6-9.
A detachable prefabricated heat preservation pipe comprises a plurality of heat preservation pipe assemblies; the assembly comprises an inner heat preservation layer 1, a first soft heat preservation layer 2, a second soft heat preservation layer 3, a third soft heat preservation layer 4, a first reflecting layer 5, a second reflecting layer 6, a third reflecting layer 7, a fourth reflecting layer 8, a foaming heat preservation material layer 9, an outer protection layer 10 and a steel skeleton 11; the heat insulation layer 1 is an inner heat insulation layer, the steel skeleton 11 is arranged on the outer side of the inner heat insulation layer 1, the first reflecting layer 5 is arranged on the outer side of the steel skeleton 11, the first soft heat insulation layer 2 is arranged on the outer side of the first reflecting layer 5, the second reflecting layer 6 is arranged on the outer side of the first soft heat insulation layer 2, the second soft heat insulation layer 3 is arranged on the outer side of the second reflecting layer 6, the third reflecting layer 7 is arranged on the outer side of the second soft heat insulation layer 3, the third soft heat insulation layer 4 is arranged on the outer side of the third reflecting layer 7, and the fourth reflecting layer 8 is arranged on the outer side of the third soft heat insulation layer 4; the outer side of the fourth reflecting layer 8 is provided with a foaming heat-insulating material layer 9; the outermost side of the assembly is an outer sheath 10; the radial and axial end surfaces of the inner and outer layer heat insulation materials of the assembly form a stepped joint structure. As shown in fig. 6 and 7.
In this embodiment, the detachable prefabricated soft insulation pipe is formed by splicing 3 assemblies with the same size.
In this embodiment, the steel skeleton 11 has axial steel bars and circumferential steel bars 11-2; the axial steel bars comprise two end axial steel bars 11-3 distributed along the circumferential direction of the steel skeleton 11 and a plurality of other axial steel bars 11-1 uniformly distributed along the circumferential direction; the circumferential steel bars 11-2 are uniformly distributed along the axial direction of the steel skeleton 11. As shown in fig. 8 and 9.
In this embodiment, the two end axial steel bars 11-3 distributed along the circumferential direction of the steel skeleton 11 are not provided with a reinforcing rib structure, and the rest of the axial steel bars 11-1 distributed along the circumferential direction are provided with reinforcing rib structures, the protrusions face inwards, and the protrusions are embedded into the inner heat insulation layer 1.
In the embodiment, the edge of the inner heat-insulating layer 1 is provided with a 45-degree groove, so that the inner heat-insulating layer is convenient to wrap and lap, and heat loss of heat outwards through a radial gap is reduced.
In this embodiment, the first reflecting layer 5, the second reflecting layer 6, the third reflecting layer 7 and the fourth reflecting layer 8 are all aluminum foil glass fiber cloth, and the aluminum foil reflecting layers are all inward and face the heat source; the first reflecting layer 5, the second reflecting layer 6, the third reflecting layer 7 and the fourth reflecting layer 8 are all in spiral and staggered wrapping states; the offset is 40 mm.
In this embodiment, the edges of the first soft insulating layer 2, the second soft insulating layer 3 and the third soft insulating layer 4 are provided with 45-degree grooves, which is convenient for wrapping and lapping, and reduces heat loss of heat from the radial gap to the outside.
In this embodiment, preferably, the material of the inner insulation layer 1 is nano aerogel, and the thickness is 25 mm.
In this embodiment, preferably, the materials of the first soft insulation layer 2, the second soft insulation layer 3 and the third soft insulation layer 4 are aluminum silicate needled carpets, and the thicknesses of the layers from inside to outside are 70/70/80 mm.
In this embodiment, the foamed thermal insulation layer 9 is preferably made of Polyurethane (PUR) and has a thickness of 70 mm.
In this embodiment, preferably, the steel skeleton 11 is made of Q235 carbon steel, the thickness of the steel bar is 2.0 mm, the width is 15 mm, and the circumferential steel bars 11-2 are distributed at intervals of 400 mm along the axial direction; the axial bars 11-1 with the reinforcing ribs are arranged at an angular interval of 30 deg. in the arc-shaped bars.
In this embodiment, preferably, the height of each step of the stepped joint of the axial section of the assembly of the detachable prefabricated soft insulation tube is 30 mm; the width of each step of the stepped joint of the radial tangential plane of the component module of the detachable prefabricated soft heat preservation pipe is 60 mm.
In this embodiment, the outer sheath 10 is preferably an aluminized steel sheet.
The above-described embodiments are merely illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to which the present invention pertains should fall within the scope of the present invention as defined in the appended claims without departing from the true spirit of the present invention.
The invention is not related in part to the same as or can be practiced with the prior art.
Claims (10)
1. The detachable prefabricated heat preservation pipe is characterized by comprising a plurality of heat preservation pipe assemblies; the heat insulation pipeline assembly comprises an inner heat insulation layer (1), a first soft heat insulation layer (2), a second soft heat insulation layer (3), a third soft heat insulation layer (4), a first reflecting layer (5), a second reflecting layer (6), a third reflecting layer (7), a fourth reflecting layer (8), a foaming heat insulation material layer (9), an outer protection layer (10) and a steel skeleton (11); the heat insulation layer (1) is an inner heat insulation layer, the steel skeleton (11) is arranged on the outer side of the inner heat insulation layer (1), the first reflecting layer (5) is arranged on the outer side of the steel skeleton (11), the first soft heat insulation layer (2) is arranged on the outer side of the first reflecting layer (5), the second reflecting layer (6) is arranged on the outer side of the first soft heat insulation layer (2), the second soft heat insulation layer (3) is arranged on the outer side of the second reflecting layer (6), the third reflecting layer (7) is arranged on the outer side of the second soft heat insulation layer (3), the third soft heat insulation layer (4) is arranged on the outer side of the third reflecting layer (7), and the fourth reflecting layer (8) is arranged on the outer side of the third soft heat insulation layer (4); the outer side of the fourth reflecting layer (8) is provided with a foaming heat-insulating material layer (9); the outermost side of the heat-insulating pipeline assembly is provided with an outer protective layer (10); the radial and axial end surfaces of the inner and outer layer heat insulation materials of the assembly form a stepped joint structure.
2. The removable prefabricated insulating tube of claim 1, wherein: the detachable prefabricated soft heat-insulating pipe is formed by splicing 2, 3 or 4 heat-insulating pipe assemblies with the same size.
3. The removable prefabricated insulating tube of claim 1, wherein: the steel skeleton (11) is provided with an axial steel bar (11-1) and a circumferential steel bar (11-2); the axial steel bars (11-1) comprise two end axial steel bars (11-3) distributed along the circumferential direction and a plurality of other axial steel bars uniformly distributed along the circumferential direction; the circumferential steel bars (11-2) are uniformly distributed along the axial direction of the steel skeleton (11) at intervals.
4. A removable prefabricated insulating tube according to claim 1 or 3, characterized in that: the two end axial steel bars (11-3) distributed along the circumferential direction of the steel skeleton (11) are not provided with reinforcing rib structures, and the rest of the axial steel bars (11-1) uniformly distributed along the circumferential direction are provided with reinforcing rib structures, bulges are inwards, and bulges are embedded into the inner heat insulation layer (1).
5. The removable prefabricated insulating tube of claim 4, wherein: the steel skeleton (11) is made of Q235 carbon steel, the thickness of the steel bar is 0.5-5.0 mm, the width of the steel bar is 10-50 mm, and the circumferential steel bars (11-2) are distributed at intervals of 150-400 mm along the axial direction; the axial bars (11-1) with the reinforcing ribs are distributed at an angular interval of 15-45 DEG in the arc-shaped bars according to the number of the pipe assemblies.
6. The removable prefabricated insulating tube of claim 2, wherein: the height of each step of the stepped joint of the axial section of the assembly of the detachable prefabricated soft heat preservation pipe is 30-50 mm; the width of each step of the stepped joint of the radial section of the assembly of the detachable prefabricated soft insulation pipe is 50-100 mm.
7. The removable prefabricated insulating tube of claim 1, wherein: the inner heat preservation layer (1), the first soft heat preservation layer (2), the second soft heat preservation layer (3) and the third soft heat preservation layer (4) are provided with 45-degree grooves at the edges, so that the inner heat preservation layer is convenient to wrap and lap, and heat loss of heat outside through radial gaps is reduced.
8. The removable prefabricated insulating tube of claim 1, wherein: the first reflecting layer (5), the second reflecting layer (6), the third reflecting layer (7) and the fourth reflecting layer (8) are all aluminum foil glass fiber cloth, and the aluminum foil reflecting layers face inwards and face a heat source; the first reflecting layer (5), the second reflecting layer (6), the third reflecting layer (7) and the fourth reflecting layer (8) are all in spiral and staggered wrapping states; the amount of misalignment is not less than 30 mm.
9. The removable prefabricated insulating tube of claim 1, wherein: the inner heat-insulating layer (1) is made of nano aerogel, and the thickness of the inner heat-insulating layer is 5-30 mm; the first soft heat preservation layer (2), the second soft heat preservation layer (3) and the third soft heat preservation layer (4) are made of high-temperature glass wool or aluminum silicate needled blanket, and the thickness of each layer is 30-80 mm.
10. The removable prefabricated insulating tube of claim 1, wherein: the foaming heat-insulating material layer (9) is made of Polyurethane (PUR) or Polyisocyanurate (PIR) and has a thickness of 30-80 mm; the outer protective layer (10) is made of glass fiber reinforced plastic, an aluminized steel plate or a color steel plate.
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| CN202310005459.XA CN116066634A (en) | 2023-01-04 | 2023-01-04 | Detachable prefabricated heat preservation pipe |
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| CN202310005459.XA CN116066634A (en) | 2023-01-04 | 2023-01-04 | Detachable prefabricated heat preservation pipe |
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| CN202310005459.XA Pending CN116066634A (en) | 2023-01-04 | 2023-01-04 | Detachable prefabricated heat preservation pipe |
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Application publication date: 20230505 |