阅读说明：本技术 一种热滚塑管道及其制造方法 (Hot rotational molding pipeline and manufacturing method thereof ) 是由 瞿海德 瞿超 于 2019-07-22 设计创作，主要内容包括：一种热滚塑管道及其制造方法,它涉及管道技术领域。一种热滚塑管道它包含管道本体、内衬塑料、减震层、减震腔、基管、钢管、中间层、防腐层、防虫药剂、保护层、法兰,管道本体内部设置内衬塑料,内衬塑料外部固定设置减震层,减震层内部形成减震腔,减震层外部固定连接基管,钢管和基管通过中间层固定连接,防腐层内部设置防虫药剂,防腐层外部涂覆保护层,管道本体端口焊接法兰。采用上述技术方案后,本发明的有益效果为：它的设计合理,具有较强的防腐蚀能力和减震能力,管道本体不容易因受到外力而发生变形,使用寿命得到了加强,适合推广使用。(A hot rotational molding pipeline and a manufacturing method thereof relate to the technical field of pipelines. The utility model provides a it contains pipeline body, inside lining plastics, the buffer layer, the shock attenuation chamber, the parent tube, the steel pipe, the intermediate level, the anticorrosive coating, the protection against insects medicament, the protective layer, the flange, the inside lining plastics that sets up of pipeline body, inside lining plastics external fixation sets up the buffer layer, the inside shock attenuation chamber that forms of buffer layer, the outside fixed connection parent tube of buffer layer, steel pipe and parent tube pass through intermediate level fixed connection, the inside protection against insects medicament that sets up of anticorrosive coating, the outside coating protective layer of anticorrosive coating, pipeline body port welded flange. After the technical scheme is adopted, the invention has the beneficial effects that: its reasonable in design has stronger corrosion protection and shock-absorbing capacity, and the pipeline body is difficult to take place to warp because of receiving external force, and life has obtained the enhancement, is fit for using widely.)

1. A hot rotomoulded pipe, characterized by: it comprises a pipeline body (1), lining plastic (11), a shock absorption layer (12), a shock absorption cavity (121), a base pipe (13), a steel pipe (14), an intermediate layer (141), an anticorrosive layer (15), an insect-proof agent (151), a protective layer (16) and a flange (2), pipeline body (1) inside lining plastics (11) that sets up, inside lining plastics (11) external fixation sets up buffer layer (12), inside shock attenuation chamber (121) that forms of buffer layer (12), buffer layer (12) outside fixed connection parent tube (13), parent tube (13) outside sets up steel pipe (14), intermediate level (141) fixed connection is passed through in steel pipe (14) and parent tube (13), steel pipe (14) surface coating anticorrosive coating (15), anticorrosive coating (15) inside sets up protection against insects medicament (151), anticorrosive coating (15) outside coating protective layer (16), pipeline body (1) port welded flange (2).

2. A method for manufacturing a hot rotational molding pipeline is characterized by comprising the following steps: pouring a rubber material on the inner wall of a base pipe to form a honeycomb type damping layer; sleeving the base pipe in the steel pipe, and placing an intermediate layer material between the steel pipe and the base pipe; heating the steel pipe, and pressurizing, cooling and shaping the inner wall of the pipeline when the interlayer material and the base pipe can be welded at the same temperature; step four, mixing an insect-proof agent into the fusion bonding epoxy resin, wrapping the fusion bonding epoxy resin outside the steel pipe, performing hot press molding, and fixing a protective layer on the outer surface of the anticorrosive layer; welding flanges at two ends of the pipeline; placing the pipeline into a sand blasting room to perform sand blasting on the inner wall of the pipeline, and spraying the sand blasting from the sand blasting pipe to enable the inner wall of the pipeline after sand blasting to reach the treatment grade of Sa2.5-3; step seven, placing the sand-blasted pipeline into an electric furnace, heating to the temperature of 250-280 ℃, and preserving the heat for 50-80 minutes to uniformly heat the pipeline; step eight, hanging the uniformly heated pipeline on a roller of a pipeline thermoplastic machine, heating polyethylene powder in the pipeline by using a powder feeder, plugging two ends of the pipeline after the polyethylene powder is added, starting a power supply of the pipeline thermoplastic machine to enable the pipeline to rotate around the axis of the pipeline, wherein the rotation speed is 15-30/min, and turning off the power supply of the pipeline thermoplastic machine after rotating for 5-8 min; step nine, when the temperature of the outer wall of the pipeline is reduced to 100-120 ℃, the outer wall of the pipeline is hung to a specified position for placement, and the pipeline is naturally cooled to the room temperature; and step ten, detecting the naturally cooled molded pipeline by negative pressure test, positive pressure test and the like, and screening out the hot rotational molding track meeting the requirements.

3. A hot rotomoulded pipe as claimed in claim 1, wherein: the shock absorption layer (12) is a rubber shock absorption layer.

4. A hot rotomoulded pipe as claimed in claim 1, wherein: the shock absorption cavity (121) is a honeycomb-shaped cavity.

5. A hot rotomoulded pipe as claimed in claim 1, wherein: the flange (2) is internally provided with a plurality of connecting holes (21), and the connecting holes (21) and the flange (2) are integrally formed.

6. A hot rotomoulded pipe as claimed in claim 1, wherein: the pipeline is characterized in that the pipe cavity (3) is arranged in the pipeline body (1), and the pipeline body (1) and the pipe cavity (3) are integrally formed.

Technical Field

The invention relates to the technical field of pipelines, in particular to a hot rotational molding pipeline and a manufacturing method thereof.

Background

The transportation pipeline as the national basic setting construction is an important basic measure in national economic construction, and the corrosion prevention is an important measure in the transportation pipeline; the temperature, concentration of corrosive media, and stress conditions all affect the extent of corrosion of the pipe. Especially in saline and alkaline environment building work progress, because there is a large amount of corrosive medium in the saline and alkaline environment time around for the life of building is at first, pre-buried pipeline under saline and alkaline environment can produce the damage owing to corrosive medium's effect, makes the life of pipeline shorten. Various types of anticorrosion hot rotational molding pipelines appear in the market, but the anticorrosion effect is poor, the pipelines do not have the damping function, the pipelines are easy to deform due to external force, and the pipelines are not suitable for popularization and use.

Disclosure of Invention

The present invention aims to address the shortcomings and drawbacks of the prior art by providing a hot rotomoulded pipe and a method of making the same.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a it contains pipeline body 1 of hot rotational moulding pipeline, inside lining plastics 11, buffer layer 12, shock attenuation chamber 121, the parent tube 13, steel pipe 14, intermediate level 141, anticorrosive coating 15, protection against insects medicament 151, protective layer 16, flange 2, 1 inside lining plastics 11 that sets up of pipeline body, 11 external fixation of inside lining plastics sets up buffer layer 12, the inside shock attenuation chamber 121 that forms of buffer layer 12, 12 outside fixed connection parent tubes 13 of buffer layer, the parent tube 13 outside sets up steel pipe 14, steel pipe 14 and parent tube 13 pass through intermediate level 141 fixed connection, 14 outer surface coating anticorrosive coating 15 of steel pipe, 15 inside protection against insects medicaments 151 that set up of anticorrosive coating 15, 15 outside coating protective layer 16 of anticorrosive coating, 1 port welded flange 2 of pipeline body.

A method of manufacturing a hot rotomoulded pipe comprising the steps of: pouring a rubber material on the inner wall of a base pipe to form a honeycomb type damping layer; sleeving the base pipe in the steel pipe, and placing an intermediate layer material between the steel pipe and the base pipe; heating the steel pipe, and pressurizing, cooling and shaping the inner wall of the pipeline when the interlayer material and the base pipe can be welded at the same temperature; step four, mixing an insect-proof agent into the fusion bonding epoxy resin, wrapping the fusion bonding epoxy resin outside the steel pipe, performing hot press molding, and fixing a protective layer on the outer surface of the anticorrosive layer; welding flanges at two ends of the pipeline; placing the pipeline into a sand blasting room to perform sand blasting on the inner wall of the pipeline, and spraying the sand blasting from the sand blasting pipe to enable the inner wall of the pipeline after sand blasting to reach the treatment grade of Sa2.5-3; step seven, placing the sand-blasted pipeline into an electric furnace, heating to the temperature of 250-280 ℃, and preserving the heat for 50-80 minutes to uniformly heat the pipeline; step eight, hanging the uniformly heated pipeline on a roller of a pipeline thermoplastic machine, heating polyethylene powder in the pipeline by using a powder feeder, plugging two ends of the pipeline after the polyethylene powder is added, starting a power supply of the pipeline thermoplastic machine to enable the pipeline to rotate around the axis of the pipeline, wherein the rotation speed is 15-30/min, and turning off the power supply of the pipeline thermoplastic machine after rotating for 5-8 min; step nine, when the temperature of the outer wall of the pipeline is reduced to 100-120 ℃, the outer wall of the pipeline is hung to a specified position for placement, and the pipeline is naturally cooled to the room temperature; and step ten, detecting the naturally cooled molded pipeline by negative pressure test, positive pressure test and the like, and screening out the hot rotational molding track meeting the requirements.

The shock absorption layer 12 is a rubber shock absorption layer.

The damping cavity 121 is a honeycomb-shaped cavity.

The flange 2 is provided with a plurality of connecting holes 21, and the connecting holes 21 and the flange 2 are integrally formed.

The pipeline body 1 is internally provided with a pipe cavity 3, and the pipeline body 1 and the pipe cavity 3 are integrally formed.

After the technical scheme is adopted, the invention has the beneficial effects that: 1. the arrangement of the anticorrosive coating improves the anticorrosive performance of the pipeline body; 2. the arrangement of the insect-proof agent can prevent the corrosion of the moths and prolong the service life of the pipe body; 3. the shock-absorbing layer and the shock-absorbing cavity are arranged, so that the shock-absorbing capacity of the pipeline body is improved, the pipeline body has a shock-absorbing function, and the pipeline body is not easy to deform due to external force. Generally speaking, its reasonable in design has stronger corrosion protection and shock-absorbing capacity, and the pipeline body is difficult to take place to warp because of receiving external force, and life has obtained the enhancement, is fit for using widely.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

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

FIG. 2 is an enlarged view of portion A corresponding to FIG. 1;

fig. 3 is an enlarged view of a portion B corresponding to fig. 1.

Description of reference numerals: the pipeline comprises a pipeline body 1, lining plastic 11, a damping layer 12, a damping cavity 121, a base pipe 13, a steel pipe 14, an intermediate layer 141, an anticorrosive layer 15, an insect-proof agent 151, a protective layer 16, a flange 2, a connecting hole 21 and a pipe cavity 3.

Detailed Description

Referring to fig. 1 to fig. 3, the technical solution adopted by the present embodiment is: a hot rotational molding pipeline comprises a pipeline body 1, lining plastic 11, a shock absorption layer 12, a shock absorption cavity 121, a base pipe 13, a steel pipe 14, an intermediate layer 141, an anticorrosive layer 15, an insect-proof agent 151, a protective layer 16 and a flange 2, wherein the lining plastic 11 is arranged inside the pipeline body 1, the shock absorption layer 12 is arranged outside the lining plastic 11, the shock absorption cavity 121 is formed inside the shock absorption layer 12, the shock absorption capacity of the pipeline body is improved by the arrangement of the shock absorption layer 12 and the shock absorption cavity 121, the pipeline body has a shock absorption function, the pipeline body is not easy to deform due to external force, the base pipe 13 is arranged outside the shock absorption layer 12, the steel pipe 14 is arranged outside the base pipe 13, the steel pipe 14 is connected with the base pipe 13 through the intermediate layer 141, the outer surface of the steel pipe 14 is coated with the anticorrosive layer 15, the anticorrosive performance of the pipeline body is improved by the arrangement of the anticorrosive layer 15, the service life of extension body, 15 outer wall coating protective layer 16 of anticorrosive coating, the fixed flange 2 that sets up of port of pipeline body 1.

A method of manufacturing a hot rotomoulded pipe comprising the steps of: pouring a rubber material on the inner wall of a base pipe to form a honeycomb type damping layer; sleeving the base pipe in the steel pipe, and placing an intermediate layer material between the steel pipe and the base pipe; heating the steel pipe, and pressurizing, cooling and shaping the inner wall of the pipeline when the interlayer material and the base pipe can be welded at the same temperature; step four, mixing an insect-proof agent into the fusion bonding epoxy resin, wrapping the fusion bonding epoxy resin outside the steel pipe, performing hot press molding, and fixing a protective layer on the outer surface of the anticorrosive layer; welding flanges at two ends of the pipeline; placing the pipeline into a sand blasting room to perform sand blasting on the inner wall of the pipeline, and spraying the sand blasting from the sand blasting pipe to enable the inner wall of the pipeline after sand blasting to reach the treatment grade of Sa2.5-3; step seven, placing the sand-blasted pipeline into an electric furnace, heating to the temperature of 250-280 ℃, and preserving the heat for 50-80 minutes to uniformly heat the pipeline; step eight, hanging the uniformly heated pipeline on a roller of a pipeline thermoplastic machine, heating polyethylene powder in the pipeline by using a powder feeder, plugging two ends of the pipeline after the polyethylene powder is added, starting a power supply of the pipeline thermoplastic machine to enable the pipeline to rotate around the axis of the pipeline, wherein the rotation speed is 15-30/min, and turning off the power supply of the pipeline thermoplastic machine after rotating for 5-8 min; step nine, when the temperature of the outer wall of the pipeline is reduced to 100-120 ℃, the outer wall of the pipeline is hung to a specified position for placement, and the pipeline is naturally cooled to the room temperature; and step ten, detecting the naturally cooled molded pipeline by negative pressure test, positive pressure test and the like, and screening out the hot rotational molding track meeting the requirements.

The shock absorbing layer 12 is made of rubber.

The damping chamber 121 is a honeycomb-shaped chamber.

The flange 2 is provided with a plurality of connecting holes 21, and the connecting holes 21 and the flange 2 are integrally formed.

The cavity inside the pipeline body 1 is a pipe cavity 3, and the pipe cavity 3 and the pipeline body 1 are integrally formed.

After the technical scheme is adopted, the invention has the beneficial effects that: 1. the arrangement of the anticorrosive coating improves the anticorrosive performance of the pipeline body; 2. the arrangement of the insect-proof agent can prevent the corrosion of the moths and prolong the service life of the pipe body; 3. the shock-absorbing layer and the shock-absorbing cavity are arranged, so that the shock-absorbing capacity of the pipeline body is improved, the pipeline body has a shock-absorbing function, and the pipeline body is not easy to deform due to external force. Generally speaking, its reasonable in design has stronger corrosion protection and shock-absorbing capacity, and the pipeline body is difficult to take place to warp because of receiving external force, and life has obtained the enhancement, is fit for using widely.

The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent substitutions made by those skilled in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention without departing from the spirit and scope of the technical solutions of the present invention.