CN218914007U - Aerogel and GRP composite heat-insulating anti-corrosion system for directly buried pipeline - Google Patents

Aerogel and GRP composite heat-insulating anti-corrosion system for directly buried pipeline Download PDF

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CN218914007U
CN218914007U CN202222679464.2U CN202222679464U CN218914007U CN 218914007 U CN218914007 U CN 218914007U CN 202222679464 U CN202222679464 U CN 202222679464U CN 218914007 U CN218914007 U CN 218914007U
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aerogel
pipeline
grp
insulation
heat
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张泽滔
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Shanghai Yanwuxia Technology Consulting Co ltd
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Shanghai Yanwuxia Technology Consulting Co ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract

The utility model relates to a direct-buried pipeline aerogel and GRP composite heat-insulating anti-corrosion system, which comprises a pipeline heat-insulating structure, a valve heat-insulating structure and a pipeline flexible connecting structure, wherein the pipeline heat-insulating structure comprises a steel pipe, an inner aerogel blanket, an outer heat-insulating layer and a GRP protective layer, and the GRP protective layer is arranged on the outer side of the outer heat-insulating layer; the valve rod heat insulation structure comprises an inner aerogel blanket heat insulation block and an outer aerogel blanket heat insulation block, and the valve straight pipe section flange heat insulation structure comprises a flange aerogel heat insulation block; the pipeline flexible connection structure comprises a UV curing GRP and a steel ribbon, and the UV curing GRP is arranged at the pipeline connection part. Compared with the prior art, the utility model has the advantages of good heat preservation and corrosion prevention effects, long service life and the like.

Description

Aerogel and GRP composite heat-insulating anti-corrosion system for directly buried pipeline
Technical Field
The utility model relates to the technical field of chemical industry and petroleum, steam and hot water pipeline transportation, in particular to a direct-buried pipeline aerogel and GRP composite heat insulation and corrosion prevention system.
Background
In the prior art, steel pipes are used in long-distance fluid conveying pipelines and are laid underground, and conveying pipelines such as petroleum, chemical media, steam, hot water and the like are all quite involved in the situation. The steel pipe has high strength, but has large weight, and is difficult to transport and lay. In addition, the heat conductivity coefficient of the steel pipe is relatively large, and the heat insulation layer is relatively thick. In the prior art, rock wool and polyurethane are mostly adopted as pipeline heat insulation materials, the water absorption of the heat insulation materials is strong, and the absorbed groundwater after being buried underground can influence the heat insulation effect, and moreover, the steel pipe is easy to rust, so that the service life of the steel pipe is reduced. The underground fluid conveying pipeline is laid in two modes, namely trench laying and direct burying. The trench laying is a well-established laying mode, when the trench is used for laying, a long pipeline trench must be laid, a large amount of building materials are consumed, the construction engineering amount is large, and the engineering cost is high. The construction cost of the direct-buried laying mode is low, but the heat preservation and corrosion prevention of the steel pipe are the problems to be solved urgently.
The anti-corrosion heat preservation technology of the pipeline is an important measure for guaranteeing the operation safety of the pipeline, once the pipeline has problems in anti-corrosion heat preservation work, the transportation of the pipeline has problems, the economic benefit of enterprises is affected, and huge losses are brought to the enterprises. The anti-corrosion heat preservation technology of the pipeline is to improve the economy on the basis of safety and reliability.
The utility model discloses a hot water engineering pipeline anticorrosion heat-insulation structure as disclosed in China utility model (CN 213626772U), relates to anticorrosion engineering, aims at solving the problems that the pipeline is easy to collide with and wear with external objects, and corrosion damage exists under external factors of the pipeline, and has the technical scheme key points that: the heat-insulating and corrosion-preventing device comprises a plurality of I-shaped pieces which are used for being bonded with a pipeline, wherein two ends of each I-shaped piece are arc-shaped, a heat-insulating and corrosion-preventing assembly sleeved outside the pipeline is arranged between every two adjacent I-shaped pieces, a foam glass plate, a cement foam plate and a polyurethane plate which are sequentially connected with each heat-insulating and corrosion-preventing assembly are sleeved outside the adjacent polyurethane plates, and hoop pieces which are detachably connected with the I-shaped pieces are sleeved outside the adjacent polyurethane plates.
The polyurethane is adopted as the pipeline heat insulation material in the prior art, so that the heat insulation material has strong water absorption, and absorbed underground water after being buried underground can influence the heat insulation effect of pipeline transportation, and the steel pipe is easy to rust, so that the service life of the steel pipe is reduced.
Disclosure of Invention
The utility model aims to overcome the defects that polyurethane heat-insulating materials have strong water absorbability and the heat-insulating effect is affected to easily cause corrosion of a conveying pipeline in the prior art, and provides a direct-buried pipeline aerogel and GRP composite heat-insulating corrosion-preventing system.
The aim of the utility model can be achieved by the following technical scheme:
the directly buried pipeline aerogel and GRP composite heat insulation corrosion prevention system comprises a pipeline heat insulation structure, a valve heat insulation structure and a pipeline flexible connection structure, wherein the pipeline heat insulation structure comprises a steel pipe, an inner aerogel blanket, an outer heat insulation layer and a GRP protection layer, the inner aerogel blanket is arranged on the outer side of the steel pipe, the outer heat insulation layer is arranged on the outer side of the inner aerogel blanket, and the GRP protection layer is arranged on the outer side of the outer heat insulation layer;
the valve insulation structure comprises a valve rod insulation structure and a valve straight pipe section flange insulation structure, the valve rod insulation structure comprises an inner aerogel blanket insulation block and an outer aerogel blanket insulation block, the inner aerogel blanket insulation block and the outer aerogel blanket insulation block are sequentially sleeved on the valve rod from inside to outside, the valve straight pipe section flange insulation structure comprises a flange aerogel insulation block, and the flange aerogel insulation block is sleeved on a flange of the valve straight pipe section;
the pipeline flexible connection structure comprises a UV curing GRP and a steel ribbon, wherein the UV curing GRP is arranged at the pipeline connection part and is positioned at the outer side of the GRP protection layer, and the steel ribbon is fixed at the outer side of the UV curing GRP.
Preferably, the material of the external insulation layer comprises an aerogel blanket.
Preferably, the shape of the inner aerogel blanket insulation block and the outer aerogel blanket insulation block corresponds to the shape of the valve end.
Preferably, through holes are formed in positions, corresponding to the valve rods, of the outer aerogel blanket insulation blocks.
Preferably, the shape of the flange aerogel insulation block corresponds to the shape of the flange.
Preferably, the pipeline flexible connection structure is fixed by field connection.
Preferably, each heat insulation layer between two adjacent pipeline heat insulation structures is overlapped in a staggered manner.
Preferably, steel belts are fixed outside the two pipelines connected by the UV cured GRP.
Preferably, the number of the steel bands is a plurality.
Preferably, the pipeline heat insulation structure comprises a straight pipeline heat insulation structure, a bent pipeline heat insulation structure and a valve body heat insulation structure.
Compared with the prior art, the utility model has the following advantages:
1) According to the scheme, the aerogel blanket is adopted as the material of the inner heat preservation layer of the pipeline, the aerogel blanket material is hydrophobic and can breathe, water outside the heat preservation layer cannot enter, water vapor of the inner layer can be removed, a better heat preservation effect is achieved, the surface of the pipeline is kept dry, and the pipeline has stronger corrosion resistance.
2) According to the scheme, GRP is adopted as sealing protection outside the heat preservation layer, the possibility that groundwater permeates into the heat preservation layer is reduced, the corrosion risk of a pipeline is further reduced, the service life of the pipeline is prolonged, and therefore higher economic benefits are achieved.
3) According to the scheme, the flexible connection is adopted for connection between the pipelines, and the connection sealing is carried out by adopting the UV curing GRP, so that the flexibility of the connection part of the pipelines is improved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a pipe insulation system according to the present utility model;
FIG. 2 is a cross-sectional view of a flexible pipe joint according to the present utility model;
FIG. 3 is a schematic view of an inner insulation structure of the valve insulation structure of the present utility model;
FIG. 4 is a schematic view of an outer insulation structure of the valve insulation structure of the present utility model;
FIG. 5 is a schematic view of the outer protective structure of the valve insulation structure of the present utility model;
in the figure, 1, steel pipe, 2, GRP protective layer, 3, valve insulation structure, 4, inlayer aerogel blanket, 5, outside heat preservation, 6, valve rod, 7, outer aerogel blanket insulation block, 8, inlayer aerogel blanket insulation block, 9, flange aerogel insulation block, 10, steel ribbon, 11, UV solidification GRP.
Detailed Description
The utility model will now be described in detail with reference to the drawings and specific examples. The present embodiment is implemented on the premise of the technical scheme of the present utility model, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present utility model is not limited to the following examples.
Example 1
As shown in fig. 1-5, the direct-buried pipeline aerogel and GRP composite heat insulation corrosion prevention system comprises a pipeline heat insulation structure, a valve heat insulation structure 3 and a pipeline flexible connection structure, wherein the pipeline heat insulation structure comprises a steel pipe 1, an inner aerogel blanket 4, an outer heat insulation layer 5 and a GRP protection layer 2, the inner aerogel blanket 4 is arranged on the outer side of the steel pipe 1, the outer heat insulation layer 5 is arranged on the outer side of the inner aerogel blanket 4, and the GRP protection layer 2 is arranged on the outer side of the outer heat insulation layer 5;
the valve insulation structure 3 comprises a valve rod insulation structure and a valve straight pipe section flange insulation structure, the valve rod insulation structure comprises an inner aerogel blanket insulation block 8 and an outer aerogel blanket insulation block 7, the inner aerogel blanket insulation block 8 and the outer aerogel blanket insulation block 7 are sequentially sleeved on the valve rod 6 from inside to outside, the valve straight pipe section flange insulation structure comprises a flange aerogel insulation block 9, and the flange aerogel insulation block 9 is sleeved on a flange of the valve straight pipe section;
the pipeline flexible connection structure comprises a UV-cured GRP11 and a steel ribbon 10, wherein the UV-cured GRP11 is arranged at the pipeline connection part and is positioned at the outer side of the GRP protection layer 2, and the steel ribbon 10 is fixed at the outer side of the UV-cured GRP 11.
Working principle: firstly, wrapping an inner aerogel blanket 4 on the outer side of a steel pipe 1, then wrapping an outer heat-insulating layer 5 on the outer side of the inner aerogel blanket 4, and finally wrapping a GRP protective layer 2 on the outer side of the outer heat-insulating layer 5, wherein for the heat-insulating structure of the bent pipe and the valve body, the shape of the heat-insulating material is prefabricated according to the shape of the bent pipe so as to be attached to the bent pipe;
the valve insulation structure 3 is characterized in that for a valve rod insulation structure, an inner aerogel blanket insulation block 8 and an outer aerogel blanket insulation block 7 are designed according to the shape of the end head of the valve rod, and the outer aerogel blanket insulation block 7 is fixed on the outer side of the inner aerogel blanket insulation block 8; fixing a flange aerogel heat-insulating block 9 matched with the flange in shape for the straight pipe flange heat-insulating structure;
the pipeline flexible connection structure is characterized in that two sections of pipelines are butted at a construction site, the heat insulation structures of the two sections of pipelines are lapped and wrapped in a staggered joint mode, the outer side of the GRP protection layer 2 at the joint of the pipelines is wrapped with the UV curing GRP11, and the UV curing GRP11 is fixed on the two sections of pipelines by using the steel ribbon 10, so that the flexible connection of the two sections of pipelines is realized.
According to the scheme, the aerogel blanket is used as a heat insulation material, the surface of the pipeline can always be kept dry based on unique respiration and hydrophobicity of the aerogel material, meanwhile, the GRP protection layer is arranged on the outermost side, the pipeline is further protected, the pipeline has better heat insulation effect and corrosion resistance, the service life of the pipeline is prolonged, and the pipeline has higher economic benefit.
The material of the outer insulation layer 5 comprises aerogel blanket, and other insulation materials can be selected.
As a preferred embodiment, the shape of the inner aerogel blanket insulation 8 and the outer aerogel blanket insulation 7 corresponds to the shape of the valve ends.
And through holes are arranged at the positions of the outer aerogel blanket heat insulation blocks 7 corresponding to the valve rods 6.
The shape of the flange aerogel heat insulation block 9 corresponds to the shape of the flange.
The valve is better attached to the heat insulation material, so that the heat insulation structure is more compact, and a better heat insulation effect is obtained.
The flexible pipeline connecting structure is fixed by field connection.
Each heat preservation layer between two adjacent pipeline heat preservation structures is overlapped in a staggered way.
And the steel ribbon 10 is fixed outside the two pipelines connected by the UV cured GRP 11. The number of steel bands 10 is plural.
The pipeline heat insulation structure comprises a straight pipeline heat insulation structure, a bent pipeline heat insulation structure and a valve body heat insulation structure, and heat insulation materials of the bent pipeline heat insulation structure and the valve body heat insulation structure are prefabricated according to the shapes of the heat insulation materials.
The foregoing describes in detail preferred embodiments of the present utility model. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the utility model by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.

Claims (10)

1. The utility model provides a compound adiabatic heat preservation anticorrosion system of directly buried pipeline aerogel and GRP, includes pipeline insulation structure, valve insulation structure (3) and pipeline flexonics structure, its characterized in that, pipeline insulation structure includes steel pipe (1), inlayer aerogel blanket (4), outside heat preservation (5) and GRP protective layer (2), inlayer aerogel blanket (4) set up in the outside of steel pipe (1), outside heat preservation (5) are established in the outside of inlayer aerogel blanket (4), GRP protective layer (2) are established in the outside of outside heat preservation (5);
the valve insulation structure (3) comprises a valve rod insulation structure and a valve straight pipe section flange insulation structure, the valve rod insulation structure comprises an inner aerogel blanket insulation block (8) and an outer aerogel blanket insulation block (7), the inner aerogel blanket insulation block (8) and the outer aerogel blanket insulation block (7) are sequentially sleeved on the valve rod (6) from inside to outside, the valve straight pipe section flange insulation structure comprises a flange aerogel insulation block (9), and the flange aerogel insulation block (9) is sleeved on a flange of the valve straight pipe section;
the pipeline flexible connection structure comprises a UV curing GRP (11) and a steel ribbon (10), wherein the UV curing GRP (11) is arranged at the pipeline connection part and located at the outer side of the GRP protection layer (2), and the steel ribbon (10) is fixed at the outer side of the UV curing GRP (11).
2. A buried pipeline aerogel and GRP composite thermal insulation corrosion protection system according to claim 1, characterized in that the material of the outer insulation layer (5) comprises an aerogel blanket.
3. The direct buried pipe aerogel and GRP composite thermal insulation corrosion protection system of claim 1, wherein the shape of the inner aerogel blanket insulation block (8) and the outer aerogel blanket insulation block (7) correspond to the shape of the valve ends.
4. The direct-buried pipeline aerogel and GRP composite heat insulation and corrosion prevention system according to claim 3, wherein through holes are formed in positions, corresponding to valve rods, of the outer-layer aerogel blanket heat insulation blocks (7).
5. The direct-buried pipeline aerogel and GRP composite heat-insulating and corrosion-preventing system according to claim 1, wherein the flange aerogel heat-insulating block (9) has a shape corresponding to the shape of the flange.
6. The direct-buried pipeline aerogel and GRP composite heat-insulating anti-corrosion system according to claim 1, wherein the pipeline flexible connection structure is fixed by on-site connection.
7. The system of claim 1, wherein each insulation layer between two adjacent pipe insulation structures is overlapped with each other in a staggered manner.
8. The direct-buried pipeline aerogel and GRP composite heat-insulating anti-corrosion system according to claim 1, wherein a steel ribbon (10) is fixed outside two pipelines connected by the UV-cured GRP (11).
9. The embedded pipe aerogel and GRP composite thermal insulation corrosion protection system of claim 1, wherein the number of steel ties (10) is a plurality.
10. The system of claim 1, wherein the pipeline insulation structure comprises a straight pipeline insulation structure, a bent pipeline insulation structure and a valve body insulation structure.
CN202222679464.2U 2022-10-12 2022-10-12 Aerogel and GRP composite heat-insulating anti-corrosion system for directly buried pipeline Active CN218914007U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202222679464.2U CN218914007U (en) 2022-10-12 2022-10-12 Aerogel and GRP composite heat-insulating anti-corrosion system for directly buried pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202222679464.2U CN218914007U (en) 2022-10-12 2022-10-12 Aerogel and GRP composite heat-insulating anti-corrosion system for directly buried pipeline

Publications (1)

Publication Number Publication Date
CN218914007U true CN218914007U (en) 2023-04-25

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CN (1) CN218914007U (en)

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