CN214838994U

CN214838994U - Wear-resistant epoxy glass flake paint anti-corrosion prestressed steel cylinder concrete pipe for conveying seawater

Info

Publication number: CN214838994U
Application number: CN202121206666.4U
Authority: CN
Inventors: 赵利; 邢兵兵; 蔡范军; 乔云武
Original assignee: Shandong Longquan Pipeline Engineering Co ltd
Current assignee: Shandong Longquan Pipeline Engineering Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2021-11-23
Anticipated expiration: 2031-06-01

Abstract

The utility model discloses a wear-resistant epoxy glass flake paint anti-corrosion prestressed steel cylinder concrete pipe for conveying seawater, which comprises a pipe core, a steel cylinder arranged in the pipe core, a socket end arranged at one end of the pipe core, a socket end at the other end of the pipe core, prestressed steel wires wound outside the pipe core and a protective layer sprayed outside the steel wires; and universal wear-resistant epoxy glass flake paint layers are sprayed on the inner wall of the female end, the outer wall of the socket end, the inner wall of the tube core and the outer wall of the cement mortar protective layer. When the pipeline conveys seawater, the corrosion of corrosive substances such as chloride ions, sulfate ions and the like in the seawater to the inner wall of the pipe and the steel cylinder can be resisted; the inner wall of the pipe is ensured to keep good paint film integrity under the impact action of the medium, and the durability of the pipe is improved. Can also block corrosive medium and mortar protective layer contact in the external environment well, and then protect the prestressing wire of tubular product, ensure the life-span of tubular product.

Description

Wear-resistant epoxy glass flake paint anti-corrosion prestressed steel cylinder concrete pipe for conveying seawater

Technical Field

The utility model relates to a concrete pipe anticorrosion technical field, concretely says so and relates to an anticorrosive prestressing force steel cylinder concrete pipeline of general wear-resisting epoxy glass flake lacquer.

Background

The prestressed steel cylinder concrete pipe (PCCP) is a common building component for conveying liquid medium, and can be widely applied to municipal, water service, industrial and agricultural water supply and distribution pipelines, circulating water pipes of power plants, inverted siphons, high-soil-coverage culvert pipes and other projects. The PCCP is a composite pipe material composed of a steel cylinder, prestressed steel wires and concrete, has the advantages of good rigidity, durability and corrosion resistance of the concrete pipe, and has the advantages of high pressure bearing capacity and good safety of the steel pipe. However, as the application range of the PCCP is continuously expanded in China, more special environments are generated in the application environment, and for example, a PCCP pipeline for transporting seawater in a coastal region is a more typical application situation. Because the PCCP is of a reinforced concrete structure, the PCCP has certain corrosion resistance, and can be directly applied to weak corrosion environments, but because seawater and saline-alkali soil in coastal areas are relatively complex corrosion environments, when the PCCP is applied to the environments, the traditional anticorrosive paint is mostly adopted to improve the corrosion resistance of pipelines at present. However, in the application process, the phenomenon that the traditional anticorrosive paint is easy to fall off along with the flushing of the conveyed fluid in the pipeline to the anticorrosive paint in the pipeline is found, and the integral anticorrosive performance of the pipeline is influenced.

Therefore, it is very important to design a prestressed concrete cylinder pipe which can meet the requirement of conveying seawater.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a general wear-resisting epoxy glass flake lacquer anticorrosion prestressing force steel cylinder concrete pipe to solve it and carrying the sea water or imbed in coastal region, Cl-destroys the passivation effect, the electrochemical corrosion effect and the sulphate of prestressing force steel wire and steel cylinder to the destructive effect of concrete. Meanwhile, the defects that the traditional anticorrosive paint is poor in wear resistance and anti-scouring capability under the scouring of liquid media in the running process of a pipeline of the common anticorrosive paint are overcome.

In order to solve the technical problem, the utility model provides a following technical scheme:

a wear-resistant epoxy glass flake paint anti-corrosion prestressed steel cylinder concrete pipe for conveying seawater comprises a pipe core, a steel cylinder arranged in the pipe core, a female end arranged at one end of the pipe core, a female end arranged at the other end of the pipe core, prestressed steel wires wound outside the pipe core and a protective layer sprayed outside the steel wires; and universal wear-resistant epoxy glass flake paint layers are sprayed on the inner wall of the female end, the outer wall of the socket end, the inner wall of the tube core and the outer wall of the cement mortar protective layer.

The socket end is a socket steel ring, the socket end is a steel socket steel ring with a rubber ring groove, and the socket steel ring are respectively welded with the corresponding steel cylinder end inside the tube core into a whole.

The outer surface of the spigot steel ring and the inner surface of the socket steel ring refer to surfaces which are contacted when the socket steel ring is installed.

The utility model discloses in, the welding is accomplished the inside and outside both sides of the steel cylinder that has the bell and spigot steel ring and is pour the concrete shaping simultaneously and make the tube core, and the inside steel cylinder of tube core has further improved its impervious performance.

The utility model discloses in, the inside and outside both sides of tubular product are sprayed simultaneously and are had general wear-resisting epoxy glass flake coating. The universal wear-resistant epoxy glass flake has better wear resistance and better flexibility and impact resistance due to the laminated arrangement structure of the glass flakes in the epoxy resin. When the pipeline conveys seawater, on one hand, the corrosion of corrosive substances such as chloride ions, sulfate ions and the like in the seawater to the concrete on the inner wall of the pipe and the steel cylinder inside the pipe can be resisted; on the other hand, due to the wear resistance and the anti-scouring performance of the general wear-resistant epoxy glass flake paint, the general wear-resistant epoxy glass flake paint on the inner wall of the pipe can be ensured to keep good paint film integrity under the impact action of a medium when the medium is conveyed, and the durability of the pipe is improved. When the pipeline conveys seawater or is buried in coastal areas, for the outer wall of the pipeline, the universal wear-resistant epoxy glass flake paint can well prevent corrosive media in the external environment from contacting with a mortar protective layer, so that prestressed steel wires of the pipe are protected, and the service life of the pipe is guaranteed.

The utility model has the advantages that,

1. the utility model discloses in, because glass scale stromatolite is arranged in epoxy, parallel with the substrate, can effectively shield the infiltration of corrosive medium and then contact the substrate, simultaneously, glass scale stromatolite is arranged and can be cut apart into many regions with coating again in epoxy, effectively fills up and covers and has reduced fracture and hole in the epoxy coating for the prevention of seepage of coating ability is improved greatly. When the pipeline conveys seawater, for the inner wall of the pipeline, the corrosion of corrosive substances such as chloride ions, sulfate ions and the like in the seawater to the concrete on the inner wall of the pipe and the steel cylinder inside the pipe can be resisted.

2. The utility model discloses in, because the wear resistance and the scour resistance of general wear-resisting epoxy glass scale lacquer, the general wear-resisting epoxy glass scale lacquer that can guarantee the tubular product inner wall keeps good paint film integrality under the impact of medium when carrying the medium, improves the durability of tubular product. When the pipeline conveys seawater or is buried in coastal areas, for the outer wall of the pipeline, the universal wear-resistant epoxy glass flake paint can well prevent corrosive media in the external environment from contacting with a mortar protective layer, so that prestressed steel wires of the pipe are protected, and the service life of the pipe is guaranteed.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment of the present invention;

the method comprises the following steps of 1-core concrete, 2-steel cylinder, 3-socket steel ring, 4-bellmouth steel ring, 5-prestressed steel wire, 6-cement mortar protective layer, 7-mortar protective layer outer coating layer, 8-pipe inner wall coating layer, 9-bellmouth steel ring outer surface coating layer and 10-bellmouth steel ring outer surface coating layer.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention. The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention in any way.

Referring to fig. 1, the pipe for conveying the seawater corrosion-resistant prestressed concrete cylinder with the wear-resistant epoxy glass flake paint comprises a pipe core concrete 1, a steel cylinder 2 inside the pipe core concrete, a socket steel ring 3 welded at one end of the steel cylinder, a socket steel ring 4 welded at the other end of the steel cylinder, a prestressed steel wire 5 wound outside the pipe core concrete, a cement mortar protective layer 6 sprayed on the surface of the prestressed steel wire, a paint layer 7 sprayed on the outer side of the mortar protective layer, a paint layer 8 sprayed on the inner wall of the pipe, a paint layer 9 coated on the outer surface of the socket steel ring, and a paint layer 10 coated on the inner surface of the socket steel ring. Wherein, socket steel ring 3 is steel and takes rubber ring groove structure, has filled the packing in the recess to have sealed effect. The outer surface of the spigot steel ring 3 and the inner surface of the socket steel ring 4 refer to the surfaces which are in contact when installed with reference to the spigot steel ring in figure 1.

When the pipeline is installed, the gaps between the inner part and the outer part of the socket end and the spigot end are sealed by cement mortar grouting, and the contact surface of the socket end and the spigot end is sealed by an O-shaped rubber ring or a wedge-shaped rubber ring. The prestressed steel cylinder concrete pipeline is a lining type prestressed steel cylinder concrete pipe or an embedded type prestressed steel cylinder concrete pipe.

In this embodiment, a prestressed concrete cylinder pipe is selected: the strength grade of the pipe core concrete is C50, the inner diameter of the pipe core is 600 mm-4000 mm, the concrete reaches the strength of the design strength for more than 28 days, the protective layer mortar reaches the strength of the design strength for more than 28 days, and the quality of the pipe and the spraying effect of the general wear-resistant epoxy glass flake paint are ensured.

In this embodiment, the socket steel ring 3, the socket steel ring 4 and the steel cylinder 2 are welded into a whole. After welding, the steel cylinder with the bell and spigot steel ring is subjected to hydraulic pressure inspection, so that the sealing performance of a welding line is ensured, and the impermeability of the welding line is ensured.

In this embodiment, the concrete on the inner wall of the pipe should be pretreated before spraying the general wear-resistant epoxy glass flake paint, including deoiling and polishing, to ensure that the surface of the concrete does not contain any pollutant harmful to the performance of the coating. The water content of the pipeline protective layer mortar 6 is lower than 6%, and the adhesion quality of the coating layer 7 sprayed on the outer side of the mortar protective layer and the cement mortar protective layer 6 is guaranteed.

In the embodiment, the outer surface of the socket steel ring 3 and the inner surface of the socket steel ring 4 are coated with universal wear-resistant epoxy glass flake paint, so that the corrosion resistance of steel at the pipeline interface part is ensured, and the durability of the pipeline is improved. And a rubber ring is arranged in the rubber ring groove of the socket steel ring 3 during pipeline installation, so that the sealing property of pipe body connection is ensured.

The utility model discloses when using, because glass scale stromatolite is arranged in epoxy, parallel with the substrate, can effectively shield the infiltration of corrosive medium and then contact the substrate, simultaneously, glass scale stromatolite is arranged and can be cut apart into many regions with coating again in epoxy, effectively fills up crack and hole in covering and having reduced the epoxy coating for the prevention of seepage permeability of coating obtains improving greatly. When the pipeline conveys seawater, for the inner wall of the pipeline, the corrosion of corrosive substances such as chloride ions, sulfate ions and the like in the seawater to the concrete on the inner wall of the pipe and the steel cylinder inside the pipe can be resisted. When the pipeline conveys seawater or is buried in coastal areas, due to the wear resistance and the anti-scouring performance of the universal wear-resistant epoxy glass scale paint, the universal wear-resistant epoxy glass scale paint on the inner wall of the pipe can be ensured to keep good paint film integrity under the impact action of a medium when the medium is conveyed, and the durability of the pipe is improved. For the outer wall of the pipeline, the universal wear-resistant epoxy glass flake paint can well block corrosive media in the external environment from contacting with the mortar protective layer, so that the prestressed steel wires of the pipe are protected, and the service life of the pipe is guaranteed.

Although the present invention has been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art without inventive work are still within the scope of the present invention.

Claims

1. The anti-corrosion prestressed steel cylinder concrete pipe with the wear-resistant epoxy glass scale paint for conveying seawater is characterized by comprising a pipe core, a steel cylinder arranged in the pipe core, a female end arranged at one end of the pipe core, a female end arranged at the other end of the pipe core, prestressed steel wires wound outside the pipe core and a protective layer sprayed outside the steel wires; and universal wear-resistant epoxy glass flake paint layers are sprayed on the inner wall of the female end, the outer wall of the socket end, the inner wall of the tube core and the outer wall of the cement mortar protective layer.

2. The anti-corrosive prestressed steel cylinder concrete pipe with abrasion-resistant epoxy glass flake paint for conveying seawater as claimed in claim 1, wherein said socket end is a socket steel ring, said socket end is a socket steel ring with rubber ring groove, and said socket steel ring and socket steel ring are respectively welded with the corresponding steel cylinder end inside the pipe core into one body.

3. The abrasion-resistant epoxy glass flake paint anti-corrosion prestressed steel cylinder concrete pipe for transporting seawater as claimed in claim 2, wherein the outer surface of said socket steel ring and the inner surface of said socket steel ring refer to surfaces which are in contact when the socket steel ring is installed.

4. The anti-corrosion prestressed steel cylinder concrete pipe with abrasion-resistant epoxy glass flake paint for conveying seawater as claimed in claim 1, wherein, when the pipeline is installed, the external gap of the socket end and the spigot end is sealed by cement mortar grouting.

5. The anti-corrosion prestressed steel cylinder concrete pipe with abrasion-resistant epoxy glass flake paint for conveying seawater as claimed in claim 1, wherein when the pipeline is installed, the gap inside the socket end and the spigot end is sealed by plastering cement mortar.

6. The abrasion-resistant epoxy glass flake paint anti-corrosion prestressed steel cylinder concrete pipe for transporting seawater according to claim 1, wherein the prestressed steel cylinder concrete pipeline is a lining type prestressed steel cylinder concrete pipe or an embedded type prestressed steel cylinder concrete pipe.

7. The abrasion-resistant epoxy glass flake paint anti-corrosion prestressed steel cylinder concrete pipe for conveying seawater as claimed in claim 2, wherein when the pipeline is installed, the contact surface of the socket end and the spigot end is sealed by an O-shaped rubber ring or a wedge-shaped rubber ring.

8. The anti-corrosion prestressed steel cylinder concrete pipe with wear-resistant epoxy glass flake paint for conveying seawater as claimed in claim 1, wherein the concrete strength grade of the pipe core is C50, and the inner diameter of the pipe core is 600 mm-4000 mm.