CN215258278U

CN215258278U - Steel band pipe with high strength and high pressure resistance

Info

Publication number: CN215258278U
Application number: CN202121548398.4U
Authority: CN
Inventors: 侯靖; 徐万松
Original assignee: Kunming Sidon Pipeline Manufacturing Co ltd
Current assignee: Kunming Sidon Pipeline Manufacturing Co ltd
Priority date: 2021-07-08
Filing date: 2021-07-08
Publication date: 2021-12-21
Anticipated expiration: 2031-07-08

Abstract

The application discloses steel band pipe with high strength and high pressure resistance sets up the reinforcing peak through the bilateral symmetry at the main crest of steel band, sets up secondary convex peak simultaneously on the center axis at main crest, can increase to twine for tubulose back, and the steel band pipe improves the hoop rigidity of tubular product along the hoop force that tubular product circumference received. When the steel strip pipe is buried underground, the buried soil body exerts gravity in the axial direction of the steel strip pipe, the secondary convex peak bulge is arranged at the central shaft of the main peak, so that the vertical pressure applied to the area can be dispersed along the circumferential direction of the secondary convex peak, and meanwhile, the joint of the secondary convex peak and the main peak is a circumscribed fillet, so that the stress can be prevented from being accumulated at the joint, and the annular rigidity of the pipe is improved. Meanwhile, the stress intensity of the main wave peak and other areas of the steel strip can be further enhanced through the reinforcing peaks arranged on the two sides of the main wave peak, and stress accumulation in a connecting area is avoided.

Description

Steel band pipe with high strength and high pressure resistance

Technical Field

The application relates to the technical field of steel belt pipe production, in particular to a steel belt pipe with high strength and high pressure resistance.

Background

The steel belt reinforced Polyethylene (PE) spiral corrugated pipe (MRP, hereinafter referred to as steel belt pipe) is a composite structure pipe which is made by winding a steel belt with the surface coated with adhesive resin into a pipe-shaped supporting structure by taking PE resin as a matrix, and then respectively coating polyethylene composite material layers on the inner side wall and the outer side wall of a pipe body (10). The steel belt pipe organically combines the high strength and the high rigidity of steel and the corrosion resistance and the flexibility of the polyethylene material layer, has the characteristics of high ring stiffness, good corrosion resistance, smooth pipe wall, long service life and the like, and is widely applied to municipal buried drainage pipeline engineering.

Meanwhile, the steel belt pipe can also be used as a containing pipeline of a communication line laid underground. The outer wall of the communication line is mostly made of plastic resin, and after the outer wall of the communication line is contacted with a bonding resin layer arranged on the inner wall of a steel belt pipe in the laying process, static electricity accumulation is easy to generate, and after the communication line is laid, if static electricity is not eliminated in time, the adverse effect on data transmission of the communication line is easy to cause.

Meanwhile, the circumferential rigidity of the existing steel belt pipe is limited by the strength of the bonding resin layer, so that the requirement of the submerging depth cannot be met after the steel belt pipe is buried underground, and the use of the steel belt pipe in underground pipeline burying is influenced.

SUMMERY OF THE UTILITY MODEL

The present application provides a steel pipe with high strength and high pressure resistance for solving the above technical problems.

The application provides a steel band pipe with high strength and high compressive capacity, include: a pipe body; the side wall of the pipe body is formed by winding a coated steel belt, and the coated steel belt is hollow after being wound to form a through cavity of the inner wall of the pipe body;

the coated steel strip comprises: the steel belt layer is coated with the high-strength bonding resin layer; the outer side wall of the steel belt layer is coated with a high-toughness bonding resin layer; a second polyethylene resin layer is coated outside the high-toughness bonding resin layer;

after the steel belt layer is wound to form a pipe body, a high-strength bonding resin layer and a high-toughness bonding resin layer are symmetrically arranged on two opposite end faces of the steel belt layer respectively, and the area of the end faces occupied by the high-strength bonding resin layer and the high-toughness bonding resin layer is equal;

after the high-strength bonding resin layer and the high-toughness bonding resin layer are respectively coated and arranged on the outer wall of the steel belt layer, the steel belt layer is wound to form a pipe body; the first polyethylene resin layer is arranged on the inner side wall of the tube body.

Preferably, said steel strip layer comprises: the main wave peaks are arranged on the central axis of the steel belt layer along the longitudinal direction of the steel belt layer;

the reinforcing peaks are symmetrically arranged on the steel belt layer connected with the main wave crest and the steel belt layer; the main wave crest is arranged outwards from the pipe body; the reinforcing peak is arranged to protrude outwards from the pipe body.

Preferably, the reinforcing peaks include: the first reinforcing peak is arranged on a first side edge where the main wave crest is connected with the steel belt layer; the second strengthening peak is arranged on the second side edge of the main wave crest connected with the steel belt layer.

Preferably, the method comprises the following steps: the secondary convex peak is arranged on the wave peak of the main wave peak in a manner of protruding outwards perpendicular to the main wave peak; the secondary convex peaks are arranged on the steel belt layer along the longitudinal direction of the steel belt layer.

Preferably, the sunken end face of the first polyethylene resin layer for sealing the main wave crest is arranged on the inner side wall of the pipe body.

Preferably, the method comprises the following steps: and the connecting flanges are arranged on the outer peripheries of two opposite ends of the pipe body in pairs.

Preferably, the joint of the secondary convex peak and the main peak is a circumscribed fillet.

Preferably, the secondary crests are disposed at the central axis of the main crest.

The beneficial effects that this application can produce include:

1) the steel band pipe that has high strength and high compressive capacity that this application provided sets up the reinforcing peak through the bilateral symmetry at the main crest of steel band, sets up secondary convex peak simultaneously on the central axis of main crest, can increase the winding for tubulose back, and the steel band pipe improves the hoop rigidity of tubular product along the hoop force that tubular product circumference received. When the steel strip pipe is buried underground, the buried soil body exerts gravity in the axial direction of the steel strip pipe, the secondary convex peak bulge is arranged at the central shaft of the main peak, so that the vertical pressure applied to the area can be dispersed along the circumferential direction of the secondary convex peak, and meanwhile, the joint of the secondary convex peak and the main peak is a circumscribed fillet, so that the stress can be prevented from being accumulated at the joint, and the annular rigidity of the pipe is improved. Meanwhile, the stress intensity of the main wave peak and other areas of the steel strip can be further enhanced through the reinforcing peaks arranged on the two sides of the main wave peak, and stress accumulation in a connecting area is avoided.

2) The steel band pipe that has high strength high compressive capacity that this application provided sets up the high strength bonding resin layer through the cladding on the steel band inner wall, when performance bonding resin bonds winding steel band and becomes the cast effect, improves the intensity that the steel band meets the department, improves stress intensity behind the tubular product buries underground, improves the safety in utilization.

3) The steel band pipe that has high strength and high compressive capacity that this application provided sets up high toughness bonding resin layer through the cladding on the outer wall at the steel band, and when the reinforcing received perpendicular tubular product gravity, the toughness of steel band junction was avoided producing the tear crack at the circumferential junction of steel band, improved tubular product and used fail safe nature. Meanwhile, the anti-static coating is arranged on the outer wall of the inner polyethylene resin layer, so that the accumulation of static in a communication line can be effectively reduced, and the transmission reliability of communication signals is improved.

Drawings

FIG. 1 is a schematic structural diagram of a steel strip pipe with high strength and high pressure resistance provided by the present application in a front view;

FIG. 2 is a schematic front view of a steel strip-unit for winding the steel strip pipe provided by the present application;

FIG. 3 is a schematic structural diagram of a steel strip shape in front view provided by the present application;

FIG. 4 is a schematic sectional view of the steel strip coated with a high strength adhesive resin layer and a high toughness adhesive resin layer on the outer surface thereof;

FIG. 5 is a schematic structural view of a bonding resin layer disposed on an end face of a steel belt layer provided by the present application;

illustration of the drawings:

10. a pipe body; 11. a connecting flange; 111. an antistatic coating; 112. a first polyethylene resin layer; 121. a high-strength adhesive resin layer; 122. a high-toughness adhesive resin layer; 123. a first enhancement peak; 124. a second enhancement peak; 125. a steel belt layer; 126. a main peak; 127. a second polyethylene resin layer; 131. secondary convex peaks; 132. and connecting the end faces.

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the embodiments and the features of the embodiments may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which the products of the present invention are conventionally placed in use, or the position or positional relationship which the skilled person conventionally understand, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the reference is made must have a specific position, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 5, the present application provides a steel band pipe with high strength and high pressure resistance, including: a tube body 10; the side wall of the pipe body 10 is formed by winding a coated steel belt, and the coated steel belt is hollow after being wound to form a through cavity of the inner wall of the pipe body 10;

the clad steel strip comprises: the steel belt layer 125, the first polyethylene resin layer 112, the high-strength adhesive resin layer 121, the second polyethylene resin layer 127, the high-toughness adhesive resin layer 122 and the antistatic coating 111, wherein the high-strength adhesive resin layer 121 is coated on the inner side wall of the steel belt layer 125; the outer side wall of the steel belt layer 125 is coated with a high-toughness bonding resin layer 122; the second polyethylene resin layer 127 is coated outside the high-toughness bonding resin layer 122;

after the steel belt layer 125 is wound to form the pipe body 10, the high-strength bonding resin layer 121 and the high-toughness bonding resin layer 122 are respectively and symmetrically arranged on two opposite end faces of the steel belt layer 125, and the area of the end faces occupied by the high-strength bonding resin layer 121 and the high-toughness bonding resin layer 122 is equal;

after the high-strength bonding resin layer 121 and the high-toughness bonding resin layer 122 are respectively coated and arranged on the outer wall of the steel belt layer 125, the steel belt layer is wound to form the pipe body 10; the first polyethylene resin layer 112 is disposed on the inner sidewall of the tube 10.

Through set up high strength bonding resin layer 121 on the inside and outside wall at steel band layer 125 respectively, high tenacity bonding resin layer 122, and symmetry on the connection terminal surface 132 of steel band layer 125, impartial high strength bonding resin layer 121 that sets up, high tenacity bonding resin layer 122, can improve the steel band layer 125 winding and become when body 10, the articulamentum pliability and the joint strength of steel band layer 125 connection terminal surface 132 department, thereby effectively improve the hoop rigidity intensity of steel band pipe, improve the reliability of steel band pipe burial underground use in-process, avoid leading to body 10 to break because the annular connection became invalid, reveal the occurence of failure of defeated pay-off, simultaneously can effectively protect to bury underground communication line safe in utilization, avoid in the strong liquid of permeability such as groundwater from permeating into body 10 through body 10, endanger communication line safety in utilization.

Meanwhile, the antistatic coating 111 is arranged on the inner wall of the second polyethylene resin layer 127 arranged on the inner wall of the pipe body 10, so that the static accumulation generated when the communication line is installed can be effectively prevented, and the use safety of the communication line is improved.

The high-strength adhesive resin layer 121 and the high-toughness adhesive resin layer 122 provided in the present application can be obtained by adding modified master batch particles to the used adhesive resin base material to obtain an adhesive resin layer having corresponding characteristics, for example, calcium carbonate master batch can be filled in the resin base material to improve toughness; the nano montmorillonite master batch is filled in the resin to realize the effect of improving the strength.

Preferably, the steel strip layer 125 comprises: a main peak 126 and reinforcing peaks arranged in pairs, wherein the main peak 126 is arranged on the central axis of the steel belt layer 125 along the longitudinal direction of the steel belt layer 125; the reinforcing peaks are symmetrically arranged on the steel belt layer 125 where the main peak 126 is connected with the steel belt layer 125; the main wave crests 126 are arranged to project outwardly of the tubular body 10; the reinforcing peaks are arranged to protrude outward from the pipe body 10.

Preferably, the reinforcing peaks include: a first reinforcing peak 123 and a second reinforcing peak 124, wherein the first reinforcing peak 123 is disposed on a first side edge of the main peak 126 connected with the steel strip layer 125; a second reinforcing peak 124 is disposed on a second side of the main peak 126 where it joins the steel strip layer 125. The first and second reinforcing peaks 124 can effectively decompose the vertical pressure applied to the pipe 10, and prevent the vertical pressure from locally gathering on the steel belt 125.

Preferably, the method comprises the following steps: the secondary convex peak 131, the secondary convex peak 131 is arranged on the peak of the main peak 126 in a way of protruding outwards perpendicular to the main peak 126; the secondary crests 131 are disposed on the steel belt layer 125 along the longitudinal direction of the steel belt layer 125.

By arranging the secondary convex peak 131, the vertical downward pressure generated on the pipe body 10 when the submerged soil is accumulated on the pipe body 10 can be effectively decomposed, the vertical pressure is further decomposed, and the circumferential rigidity of the tank body is improved.

Preferably, the first polyethylene resin layer 112 is disposed on the inner sidewall of the tube 10 to close the concave end surface of the main peak 126.

Preferably, the method comprises the following steps: and the connecting flanges 11, the connecting flanges 11 are arranged on the outer peripheries of two opposite ends of the pipe body 10 in pairs. Through setting up flange 11, can be convenient for be connected many bodys 10, improve the installation rate in the use.

Preferably, the junction between the secondary convex peak 131 and the main convex peak 126 is a round-out corner.

Preferably, the secondary crests 131 are disposed at the central axis of the primary crests 126.

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 modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. A steel strip pipe having high strength and high pressure resistance, comprising: a tube (10); the side wall of the pipe body (10) is formed by winding a coated steel belt, and the coated steel belt is hollow after being wound to form a through cavity of the inner wall of the pipe body (10);

the coated steel strip comprises: the steel belt layer (125), the first polyethylene resin layer (112), the high-strength bonding resin layer (121), the second polyethylene resin layer (127), the high-toughness bonding resin layer (122) and the anti-static coating (111), wherein the high-strength bonding resin layer (121) is coated on the inner side wall of the steel belt layer (125); the outer side wall of the steel belt layer (125) is coated with a high-toughness bonding resin layer (122); a second polyethylene resin layer (127) is coated outside the high-toughness bonding resin layer (122);

after the steel belt layer (125) is wound to form the pipe body (10), the high-strength bonding resin layer (121) and the high-toughness bonding resin layer (122) are symmetrically arranged on two opposite end faces of the steel belt layer (125) respectively, and the area of the end faces occupied by the high-strength bonding resin layer (121) and the high-toughness bonding resin layer (122) is equal;

after the high-strength bonding resin layer (121) and the high-toughness bonding resin layer (122) are respectively coated and arranged on the outer wall of the steel belt layer (125), the steel belt layer is wound to form a pipe body (10); the first polyethylene resin layer (112) is arranged on the inner side wall of the tube body (10).

2. A steel strip pipe with high strength and high pressure resistance according to claim 1, characterized in that said steel strip layer (125) comprises: the main wave crests (126) and the reinforcing peaks are arranged in pairs, and the main wave crests (126) are arranged on the central axis of the steel belt layer (125) along the longitudinal direction of the steel belt layer (125);

the reinforcing peaks are symmetrically arranged on the steel belt layer (125) connected with the main wave peak (126) and the steel belt layer (125); the main wave crest (126) is arranged outwards of the pipe body (10); the reinforcing peak is arranged outwards of the pipe body (10).

3. The steel strip pipe with high strength and high pressure resistance as claimed in claim 2, wherein the reinforcing peaks comprise: the first reinforcing peak (123) and the second reinforcing peak (124), the first reinforcing peak (123) is arranged on a first side edge of the main peak (126) connected with the steel belt layer (125); the second reinforcing peak (124) is disposed on a second side of the main peak (126) that is connected to the steel strip layer (125).

4. The steel strip pipe with high strength and high pressure resistance as claimed in claim 1, comprising: the secondary convex peak (131) is arranged on the peak of the main peak (126) in a manner of protruding outwards perpendicular to the main peak (126); the secondary hump (131) is arranged on the steel belt layer (125) along the longitudinal direction of the steel belt layer (125).

5. The steel belt pipe with high strength and high pressure resistance as claimed in claim 2, wherein the first polyethylene resin layer (112) is disposed on the inner side wall of the pipe body (10) at the end face of the recess closing the main peak (126).

6. The steel strip pipe with high strength and high pressure resistance as claimed in claim 1, comprising: the connecting flanges (11) are arranged on the outer peripheries of two opposite ends of the pipe body (10) in pairs.

7. The high-strength high-pressure-resistant steel strip pipe as claimed in claim 4, wherein the joints of the secondary crests (131) and the main crests (126) are rounded.

8. The steel strip pipe with high strength and high pressure resistance according to claim 4, wherein the minor peaks (131) are provided at the central axes of the major peaks (126).