CN219493337U

CN219493337U - Polyethylene-wound ductile iron directly-buried anti-corrosion heat-insulation pipe

Info

Publication number: CN219493337U
Application number: CN202320510621.9U
Authority: CN
Inventors: 李鹏举; 郭培霞
Original assignee: Tianjin Yugang Keep Warm Construction Material Co ltd
Current assignee: Tianjin Yugang Keep Warm Construction Material Co ltd
Priority date: 2023-03-16
Filing date: 2023-03-16
Publication date: 2023-08-08
Anticipated expiration: 2033-03-16

Abstract

The utility model discloses a polyethylene-wound ductile iron directly-buried anti-corrosion heat-insulating pipe, which comprises an inner pipe, an outer pipe, an anti-corrosion layer, an inner steel pipe layer, an outer steel pipe layer, an heat-insulating layer, a supporting sheet A and a supporting sheet B.

Description

Polyethylene-wound ductile iron directly-buried anti-corrosion heat-insulation pipe

Technical Field

The utility model relates to the technical field of polyethylene-wound ductile iron directly-buried anti-corrosion heat-insulation pipes, in particular to a polyethylene-wound ductile iron directly-buried anti-corrosion heat-insulation pipe.

Background

The heat-insulating pipeline is widely used for conveying pipe networks of liquid and gas, petroleum, chemical engineering, central heating and heating networks, ventilating pipelines of central air conditioners, municipal engineering and the like in heat-insulating engineering of chemical pipelines. The high-temperature prefabricated directly-buried heat-insulating pipe is a directly-buried prefabricated heat-insulating pipe with good heat-insulating performance, safety, reliability and low engineering cost. Effectively solves the problems of heat preservation, sliding lubrication and water prevention of exposed pipe ends of prefabricated directly-buried heat preservation pipes for the temperature of 130-600 ℃ high Wen Shure in the central heat supply of towns. The high-temperature prefabricated directly-buried heat-insulating pipe not only has advanced technology and practicality which are difficult to compare with those of the traditional ditches and overhead laying pipelines, but also has obvious social benefit and economic benefit, and is a powerful measure for heat supply and energy conservation. The high-temperature prefabricated directly-buried heat-insulating pipe adopts a directly-buried heat supply pipeline technology, and marks that the development of the heat supply pipeline technology has entered a new starting point.

Through searching, chinese patent No. 213576005U discloses a rigid polyurethane spray coating polyethylene winding prefabricated directly buried heat preservation pipe, which belongs to the technical field of directly buried heat preservation pipes, the rigid polyurethane spray coating polyethylene winding prefabricated directly buried heat preservation pipe comprises a pipe body, the pipe body comprises a high-density polyethylene jacket pipe, an antioxidant layer is arranged on the outer surface of the high-density polyethylene jacket pipe, a wear-resistant layer is arranged on the outer surface of the antioxidant layer, clamping discs are fixedly connected to two sides of the pipe body, and clamping clamps are connected to the clamping discs in a clamping manner. According to the utility model, two heat-insulating pipe bodies are butted, the clamping discs are contacted, the omega-shaped fixing bent piece A and the omega-shaped fixing bent piece B in the clamp are sleeved at two ends of the clamping discs, the bulge part at the tail end of the clamping disc is wrapped by the inner groove of the omega-shaped fixing bent piece, and the assembling and fixing between the pipe bodies are completed by installing bolts and nuts at two ends of the omega-shaped fixing bent piece, so that the pipe is convenient to assemble and is suitable for being widely popularized and used.

The prior device has the following defects when in use: when the existing polyethylene winding nodular cast iron directly buried heat preservation pipe is used, the corrosion resistance of the inner wall of the pipe is poor due to the fact that the inner layer of the pipe lacks a corrosion-resistant layer, the pipe is easy to rust, the bearing pressure of the pipe is large, the pipe structure is easy to damage, and the service life of the pipe is reduced.

Disclosure of Invention

The utility model aims to provide a polyethylene-wound ductile iron directly-buried anti-corrosion heat-insulating pipe, which solves the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a polyethylene winding nodular cast iron directly buries anticorrosive insulating tube, includes inner tube, outer tube, anticorrosive coating, steel pipe inlayer, steel pipe skin, heat preservation, backing sheet A and backing sheet B, the inner wall coating of inner tube has the anticorrosive coating, the outside of inner tube is provided with the outer tube concentric and contactless with the inner tube, laminating has steel pipe inlayer and steel pipe skin in proper order on the outer wall of inner tube, install backing sheet A and backing sheet B between steel pipe inlayer and the steel pipe skin, backing sheet A forms the tripod shape of clamp angle with backing sheet B's one end counterbalance.

Preferably, the triangular brackets formed by the supporting sheets A and B are arranged in six groups, and the triangular brackets are arranged in the heat-insulating layer in a surrounding manner with the same interval distance.

Preferably, the lengths of the supporting sheets A and B are arranged along the length of the inner tube.

Preferably, an insulation layer is formed between the inner layer of the steel pipe and the outer layer of the steel pipe.

Preferably, the heat insulation layer is filled with heat insulation materials.

Preferably, the outer wall of the outer tube is provided with a wear layer using a spray winding process.

Preferably, the inner tube and the outer tube are made of ductile iron materials.

Compared with the prior art, the utility model has the beneficial effects that: the inner wall coating anticorrosive coating at the inner tube for the inner tube has anticorrosive function, has avoided the inner wall of inner tube to be corroded easy rusty problem, through supporting plate A and supporting plate B of installation between steel pipe inlayer and the steel pipe skin, because supporting plate A offsets the one end that forms the contained angle 60 degrees with supporting plate B and appears, the support stability of tripod is high, and the tripod that supporting plate A and supporting plate B formed sets up to six groups, the interval distance of tripod is the same around installing in the heat preservation, supporting plate A and supporting plate B's length sets up along the length of inner tube, increased the bearing compressive resistance of pipeline, avoid the pipeline deformation to destroy the body, prolonged the life of pipeline.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

fig. 1 is a schematic perspective view of the present utility model.

Fig. 2 is a schematic elevational view of the present utility model.

Fig. 3 is a schematic diagram of the front structure of the present utility model.

Fig. 4 is a schematic side view of the present utility model.

In the figure: 1. an inner tube; 2. an outer tube; 3. an anti-corrosion layer; 4. an inner layer of the steel pipe; 5. an outer layer of the steel pipe; 6. a heat preservation layer; 7. a support sheet A; 8. a support sheet B; 9. a thermal insulation material; 10. and a wear-resistant layer.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Referring to fig. 1, 2, 3 and 4, in the embodiment of the utility model, a polyethylene wound ductile iron directly buried anticorrosion heat insulation pipe comprises an inner pipe 1, an outer pipe 2, an anticorrosion layer 3, an inner pipe layer 4, an outer pipe layer 5, a heat insulation layer 6, a support sheet A7 and a support sheet B8, wherein the inner wall of the inner pipe 1 is coated with the anticorrosion layer 3, the inner pipe 1 has an anticorrosion function by coating the anticorrosion layer 3 on the inner wall of the inner pipe 1, the inner wall of the inner pipe 1 is prevented from being corroded and rusted easily, the outer pipe 2 concentric with and not contacted with the inner pipe 1 is arranged on the outer side of the inner pipe 1, the inner pipe layer 4 and the outer pipe layer 5 are sequentially attached to the outer wall of the inner pipe 1, the support sheet A7 and the support sheet B8 are arranged between the inner pipe layer 4 and the outer pipe layer 5, the support sheet A7 and one end of the support sheet B8 are propped against each other to form a triangular bracket with an included angle of 60 degrees, the triangular brackets formed by the supporting sheets A7 and B8 are arranged into six groups, the same interval distance is arranged in the heat insulation layer 6 in a surrounding manner, the lengths of the supporting sheets A7 and B8 are arranged along the length of the inner pipe 1, the supporting sheets A7 and B8 arranged between the inner layer 4 and the outer layer 5 of the steel pipe are used for propping against one end of the supporting sheets A7 and B8 to form an triangular bracket shape with an included angle of 60 degrees, the supporting stability of the triangular brackets is high, the triangular brackets formed by the supporting sheets A7 and B8 are arranged into six groups, the interval distance of the triangular brackets is the same and is arranged in the heat insulation layer 6 in a surrounding manner, the lengths of the supporting sheets A7 and B8 are arranged along the length of the inner pipe 1, the bearing pressure resistance of the pipeline is increased, the deformation of the pipeline is avoided, the service life of the pipeline is prolonged, the heat insulation layer 6 is formed between the inner layer 4 of the steel pipe and the outer layer 5 of the steel pipe, the heat insulation layer 6 is filled with heat insulation materials 9, the outer wall of the outer tube 2 is provided with a wear-resistant layer 10 by using a spraying winding process, and the inner tube 1 and the outer tube 2 are made of spheroidal graphite cast iron materials.

The working principle of the utility model is as follows: through the inner wall coating anticorrosive coating 3 at inner tube 1 for inner tube 1 has anticorrosive function, avoided the inner wall of inner tube 1 to be corroded the easy rusty problem, through supporting piece A7 and the supporting piece B8 of installation between steel pipe inlayer 4 and the steel pipe skin 5, because supporting piece A7 offsets the one end that forms contained angle 60 degrees with supporting piece B8 and forms the tripod shape, the support stability of tripod is high, and the tripod that supporting piece A7 and supporting piece B8 formed sets up to six groups, the interval distance of tripod is the same around installing in heat preservation 6, supporting piece A7 and supporting piece B8's length sets up along the length of inner tube 1, the bearing compressive force of pipeline has been increased, avoid the pipeline to warp and destroy the body, the life of pipeline has been prolonged.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a polyethylene winding nodular cast iron directly buries anticorrosive insulation tube, includes inner tube (1), outer tube (2), anticorrosive coating (3), steel pipe inlayer (4), steel pipe skin (5), heat preservation (6), backing sheet A (7) and backing sheet B (8), its characterized in that: the inner wall coating of inner tube (1) has anticorrosive coating (3), the outside of inner tube (1) is provided with outer tube (2) concentric and contactless with inner tube (1), laminating in proper order on the outer wall of inner tube (1) steel pipe inlayer (4) and steel pipe skin (5), install backing sheet A (7) and backing sheet B (8) between steel pipe inlayer (4) and steel pipe skin (5), backing sheet A (7) offsets with the one end of backing sheet B (8) and forms the triangle-shaped support of contained angle 60 degrees.

2. The polyethylene-wound ductile iron directly-buried anti-corrosion heat preservation pipe according to claim 1, wherein: the triangular brackets formed by the supporting sheets A (7) and the supporting sheets B (8) are arranged in six groups, and are arranged in the heat insulation layer (6) in a surrounding mode with the same interval distance.

3. The polyethylene-wound ductile iron directly-buried anti-corrosion heat preservation pipe according to claim 1, wherein: the lengths of the supporting sheets A (7) and the supporting sheets B (8) are arranged along the length of the inner tube (1).

4. The polyethylene-wound ductile iron directly-buried anti-corrosion heat preservation pipe according to claim 1, wherein: an insulating layer (6) is formed between the inner layer (4) of the steel pipe and the outer layer (5) of the steel pipe.

5. The polyethylene-wound ductile iron directly-buried anti-corrosion heat preservation pipe according to claim 1, wherein: the heat preservation layer (6) is filled with a heat preservation material (9).

6. The polyethylene-wound ductile iron directly-buried anti-corrosion heat preservation pipe according to claim 1, wherein: the outer wall of the outer tube (2) is provided with a wear-resistant layer (10) using a spray winding process.

7. The polyethylene-wound ductile iron directly-buried anti-corrosion heat preservation pipe according to claim 1, wherein: the inner tube (1) and the outer tube (2) are made of spheroidal graphite cast iron materials.