CN215445382U

CN215445382U - Nano aerogel coating polyurethane spraying polyethylene winding leakage monitoring heat preservation pipeline

Info

Publication number: CN215445382U
Application number: CN202122246989.2U
Authority: CN
Inventors: 邱华伟; 邱晓霞; 邱秀娟; 王帅; 徐广永
Original assignee: Tangshan Xingbang Pipe Construction Equipment Co ltd
Current assignee: Tangshan Xingbang Pipe Construction Equipment Co ltd
Priority date: 2021-09-16
Filing date: 2021-09-16
Publication date: 2022-01-07
Anticipated expiration: 2031-09-16

Abstract

The utility model discloses a nano aerogel coating polyurethane spraying polyethylene winding leakage monitoring heat insulation pipeline, wherein a nano aerogel layer is coated on the outer side surface of a working steel pipe, a polyurethane heat insulation layer is coated on the outer side surface of the nano aerogel layer in a spraying mode, a polyethylene outer protection layer is connected to the outer side surface of the polyurethane heat insulation layer in a spiral winding mode, and an alarm line transversely penetrates through the interior of the polyurethane heat insulation layer; the alarm line is prefabricated into the heat-insulating pipeline, so that the hot water heat-insulating pipeline has leakage detection capability, and the energy loss is reduced to the minimum.

Description

Nano aerogel coating polyurethane spraying polyethylene winding leakage monitoring heat preservation pipeline

Technical Field

The utility model relates to the technical field of prefabricated direct-buried heat-insulating pipelines, in particular to a nano aerogel coated polyurethane sprayed polyethylene winding leakage monitoring heat-insulating pipeline.

Background

The nano aerogel thermal insulation material is formed by combining nano silicon dioxide aerogel and an inorganic textile material according to a unique processing technology, has the advantages of low heat transfer coefficient, moisture and fire prevention safety, low carbon, environmental protection and the like, is a reversible raw material for selecting thermal insulation materials of pipelines and machine equipment walls, insulating heat, protecting heat and saving energy, is the material with the best thermal insulation performance so far, has the room temperature heat conductivity coefficient reaching 0.018W/(m.K), has the fireproof performance grade A, can achieve the same thermal insulation effect when being 1/5-1/3 of the thickness of the traditional material, improves the space utilization rate, saves an outer coating material, further reduces the total construction cost, and does not contain harmful substances to a human body;

however, the current nanometer aerogel materials are limited by the influence of production technology, and the production forms are mostly blanket and felt products, which are mostly applied to steam heat-insulating pipeline products, but are rarely directly applied to the production field of prefabricated direct-buried hot water heat-insulating pipelines.

SUMMERY OF THE UTILITY MODEL

The utility model provides a nano aerogel coating polyurethane spraying polyethylene winding leakage monitoring heat preservation pipeline, which can effectively solve the problem that the existing nano aerogel material is limited by the influence of production technology, most of the production forms are blanket and felt products, and most of the production forms are applied to steam heat preservation pipeline products, so that the nano aerogel material cannot be directly used for prefabricating a direct-buried hot water heat preservation pipeline.

In order to achieve the purpose, the utility model provides the following technical scheme: nanometer aerogel coating polyurethane spraying polyethylene winding leakage monitoring insulating pipeline, including the work steel pipe, the surface coating in the work steel pipe outside has nanometer aerogel layer, the surface cladding of nanometer aerogel layer outside has the polyurethane heat preservation through the mode of spraying, the surface of polyurethane heat preservation layer outside is connected with the polyethylene outer jacket through the mode of spiral winding;

and an alarm line is transversely connected in the polyurethane heat-insulating layer in a penetrating manner.

Preferably, the nano aerogel layer is coated on the surface of the work steel pipe subjected to shot blasting rust removal in a spraying mode, and the thickness of the nano aerogel layer is 100 micrometers.

Preferably, the polyethylene outer protective layer is closely connected to the outer side of the polyurethane heat-insulating layer, and the inner side edge end of the polyethylene outer protective layer is closely connected with the polyurethane heat-insulating layer through cyanoacrylate heat-insulating glue in an adhesive manner.

Preferably, the alarm lines are provided with a plurality of alarm lines, and the alarm lines are respectively arranged in the polyurethane heat-insulating layer in a circumferential array manner.

Preferably, the outer side of the polyethylene outer protective layer is sleeved with a coating hot-melt adhesive sleeve at the end position of the working steel pipe and the polyurethane heat-insulating layer, and the inner side edge end of the coating hot-melt adhesive sleeve is connected with the outer side of the polyethylene outer protective layer in an adhesive manner through a tight adhesive layer.

Preferably, the position, located at the edge of the working steel pipe, of the end part of the inner side of the coated hot melt adhesive sleeve is connected with a sealed extrusion adhesive sleeve, the coated hot melt adhesive sleeve is a heat-shrinkable rubber sleeve, and the inner side surface of the coated hot melt adhesive sleeve is tightly attached to the outer side of the polyethylene outer protective layer.

Compared with the prior art, the utility model has the beneficial effects that:

1. the utility model breaks through the limitation of the traditional nanometer aerogel production process, and the traditional nanometer aerogel, blanket and felt forms are upgraded to be changed into paint state substances by blending other raw materials, the combination of the paint state substances and a heat-preservation hot water pipeline is realized, meanwhile, the excellent heat-preservation fireproof performance of the nanometer aerogel is kept, the advanced production process technology of spraying and winding the heat-preservation pipeline is combined with the excellent heat-preservation effect of the nanometer aerogel material, and the production is carried out through the most advanced spraying and winding heat-preservation pipeline production line in China, so that the heat-preservation performance of the heat-preservation pipeline product is greatly improved, and the unit product feeding amount of a polyurethane heat-preservation layer and a polyethylene outer protective pipe is reduced, so that the heat-preservation pipeline is more energy-saving and environment-friendly.

2. The utility model further upgrades the excellent product performance of the novel spraying and winding heat preservation pipeline, greatly improves the heat preservation performance of the existing heat preservation hot water pipeline product, improves the heat preservation efficiency by combining the production process of the spraying and winding heat preservation pipeline, effectively reduces the usage amount of the polyurethane raw material of the polyurethane heat preservation layer, and is beneficial to energy conservation and environmental protection;

the alarm line is prefabricated into the heat preservation pipeline, so that the hot water heat preservation pipeline has leakage detection capacity, the energy loss is reported to a user at the first time, and the energy loss is reduced to the minimum.

3. Through cladding hot melt gum cover, inseparable cementing layer and sealed extrusion gum cover can effectually carry out the cladding with each heat preservation of heat preservation pipeline's inside to this makes that to connect between each layer of heat preservation pipeline inside inseparabler, thereby promotes the heat preservation effect.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model.

In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic structural view of the covered hot melt adhesive sheath of the present invention;

reference numbers in the figures: 1. working steel pipes; 2. a nano-aerogel layer; 3. a polyurethane heat-insulating layer; 4. a polyethylene outer jacket; 5. an alarm line; 6. coating a hot melt adhesive sleeve; 7. a tight adhesive layer; 8. and sealing and extruding the rubber sleeve.

Detailed Description

The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.

Example (b): as shown in figures 1-3, the utility model provides a technical scheme, a nano aerogel coating polyurethane spraying polyethylene winding leakage monitoring heat preservation pipeline comprises a working steel pipe 1, a nano aerogel layer 2 is coated on the outer side surface of the working steel pipe 1, the nano aerogel layer 2 is coated on the surface of the working steel pipe 1 subjected to shot blasting rust removal in a spraying mode, so that the nano aerogel layer 2 and the working steel pipe 1 are more stable after connection, the connection tightness between the nano aerogel layer 2 and the working steel pipe 1 is ensured, the use effect of the nano aerogel layer 2 is improved, the thickness of the nano aerogel layer 2 is 100 mu m, the thickness of a traditional hard polyurethane heat preservation layer can be reduced, the raw material amount of the heat preservation layer is effectively reduced, the outer side surface of the nano aerogel layer 2 is coated with a polyurethane heat preservation layer 3 in a spraying mode, the outer side surface of the polyurethane heat preservation layer 3 is connected with a polyethylene outer protection layer 4 in a spiral winding mode, the polyethylene outer protective layer 4 is tightly connected to the outer side of the polyurethane heat-insulating layer 3, so that the connection between the polyethylene outer protective layer 4 and the polyurethane heat-insulating layer 3 is tighter, and the inner side edge end of the polyethylene outer protective layer 4 is tightly connected with the polyurethane heat-insulating layer 3 in an adhesive manner through cyanoacrylate heat-insulating glue, so that an integral structure can be quickly formed between the polyethylene outer protective layer 4 and the polyurethane heat-insulating layer 3 after connection, the subsequent polyethylene outer protective layer 4 has higher protection capability, and the polyurethane heat-insulating layer 3 has higher heat-insulating effect;

the inside horizontal through connection of polyurethane heat preservation 3 has alarm line 5, alarm line 5 is provided with many, and many alarm lines 5 install in the inside of polyurethane heat preservation 3 with the mode of circumference array respectively, make things convenient for alarm line 5's installation, simultaneously through evenly setting up alarm line 5 in 3 outside circumferencial directions of polyurethane heat preservation for each angle of 3 inside polyurethane heat preservation all possesses the function of revealing the monitoring, and then avoid alarm line 5 to appear the phenomenon at monitoring dead angle in the actual monitoring process.

The end position department that the 4 outsides of polyethylene outer jacket are located work steel pipe 1 and polyurethane heat preservation 3 has cup jointed cladding hot melt adhesive cover 6, splice through inseparable splice layer 7 between 6 inboard limit ends of cladding hot melt adhesive cover and the 4 outsides of polyethylene outer jacket and be connected, conveniently carry out the cladding protection to the outside of polyethylene outer jacket 4, make simultaneously that the inside layer of insulating tube possesses higher connection compactness, make things convenient for the subsequent connection of insulating tube simultaneously, 6 medial extremity departments of cladding hot melt adhesive cover are located 1 limit position department of work steel pipe are connected with sealed extrusion gum cover 8, cladding hot melt adhesive cover 6 is pyrocondensation rubber sleeve, and 6 inboard surfaces of cladding hot melt adhesive cover closely laminate with the 4 outsides of polyethylene outer jacket, make things convenient for the quick fusion between sealed extrusion gum cover 8 and the polyethylene outer jacket 4 to be connected.

The working principle and the using process of the utility model are as follows: in the forming process of the nano aerogel coating polyurethane spraying polyethylene winding leakage monitoring heat preservation pipeline, firstly, the surface of a working steel pipe 1 is derusted through a shot blasting machine, then nano aerogel paint is coated on the surface of the working steel pipe 1, a nano aerogel layer 2 is formed on the surface of the working steel pipe 1, after the nano aerogel layer 2 is solidified, an alarm wire 5 is installed on the outer side of the nano aerogel layer 2, meanwhile, a polyurethane heat preservation layer 3 is sprayed on the outer side of the nano aerogel layer 2 through spraying equipment, the alarm wire 5 is located in the polyurethane heat preservation layer, and a polyethylene outer protection layer 4 is wound on the outer side of the polyurethane heat preservation layer 3 in a spiral winding mode on the outer side of the dried polyurethane heat preservation layer 3;

finally, the coated hot-melt adhesive sleeve 6 is sleeved outside the end part of the polyethylene outer protective layer 4, the coated hot-melt adhesive sleeve 6 is tightly sleeved outside the polyethylene outer protective layer 4 in a hot water or hot air mode, and the tightness of the connection between the coated hot-melt adhesive sleeve 6 and the polyethylene outer protective layer is further ensured through the tight adhesive layer 7 between the coated hot-melt adhesive sleeve and the polyethylene outer protective layer, so that the tightness between each layer inside the heat-preservation pipeline after the heat-preservation pipeline is assembled is ensured, and the actual heat-preservation effect of the heat-preservation pipeline is improved;

in the practical application process, the excellent heat-insulating and fireproof performance of the nano aerogel is kept in the existing heat-insulating pipeline, and the advanced production process technology of spraying and winding the heat-insulating pipeline is combined with the excellent heat-insulating effect of the nano aerogel material, so that the heat-insulating performance of the heat-insulating pipeline product is greatly improved, the unit product feeding amount of the polyurethane heat-insulating layer 3 and the polyethylene outer protective layer 4 is reduced, and the using amount of the polyurethane raw material of the polyurethane heat-insulating layer 3 is effectively reduced, so that the heat-insulating pipeline is more energy-saving and environment-friendly;

and, prefabricate alarm line 5 to the insulating tube inside for hot water insulating tube has leakage detection ability, reports the energy loss to the user the very first time, reduces the energy loss to minimum.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Nanometer aerogel coating polyurethane spraying polyethylene winding leakage monitoring insulating tube says, including work steel pipe (1), its characterized in that: the outer side surface of the working steel pipe (1) is coated with a nano aerogel layer (2), the outer side surface of the nano aerogel layer (2) is coated with a polyurethane heat-insulating layer (3) in a spraying mode, and the outer side surface of the polyurethane heat-insulating layer (3) is connected with a polyethylene outer protective layer (4) in a spiral winding mode;

and an alarm line (5) is transversely connected inside the polyurethane heat-insulating layer (3) in a penetrating manner.

2. The nano aerogel coated polyurethane spray coated polyethylene wrapped leakage monitoring insulated pipeline according to claim 1, characterized in that: the nano aerogel layer (2) is coated on the surface of the work steel pipe (1) subjected to shot blasting rust removal in a spraying mode, and the thickness of the nano aerogel layer (2) is 50-300 mu m.

3. The nano aerogel coated polyurethane spray coated polyethylene wrapped leakage monitoring insulated pipeline according to claim 1, characterized in that: the polyethylene outer protective layer (4) is tightly connected to the outer side of the polyurethane heat-insulating layer (3), and the inner side edge end of the polyethylene outer protective layer (4) is tightly connected with the polyurethane heat-insulating layer (3) in an adhesive mode through cyanoethyl acrylate heat-insulating glue.

4. The nano aerogel coated polyurethane spray coated polyethylene wrapped leakage monitoring insulated pipeline according to claim 1, characterized in that: the alarm lines (5) are arranged in a plurality of numbers, and the alarm lines (5) are respectively arranged in the polyurethane heat-insulating layer (3) in a circumferential array mode.

5. The nano aerogel coated polyurethane spray coated polyethylene wrapped leakage monitoring insulated pipeline according to claim 1, characterized in that: the outer side of the polyethylene outer protective layer (4) is located at the end position of the working steel pipe (1) and the polyurethane heat-insulating layer (3) and is sleeved with a coating hot-melt adhesive sleeve (6), and the inner side edge end of the coating hot-melt adhesive sleeve (6) is connected with the outer side of the polyethylene outer protective layer (4) in an adhesive manner through a tight adhesive layer (7).

6. The nano aerogel coated polyurethane spray coated polyethylene wrapped leakage monitoring insulated pipeline according to claim 5, wherein: the inner side end of the cladding hot melt adhesive sleeve (6) is connected with a sealing extrusion adhesive sleeve (8) at the position of the edge of the working steel pipe (1), the cladding hot melt adhesive sleeve (6) is a thermal shrinkage rubber sleeve, and the inner side surface of the cladding hot melt adhesive sleeve (6) is tightly attached to the outer side of the polyethylene outer protective layer (4).