Steel curtain belt reinforced wear-resistant pipeline

Abstract

The steel curtain belt reinforced wear-resistant pipeline comprises a pipe body, the section structure of the pipe body is sequentially provided with a lining transmission layer, a reinforcing layer and an outer protection layer from inside to outside, and the reinforcing layer, the lining transmission layer and the outer protection layer are bonded and compounded into a whole; the reinforcing layer is made of a steel curtain belt in a prepreg belt mode in a bidirectional winding mode. The pipe body formed by the lining transmission layer, the reinforcing layer and the outer protection layer which are arranged from inside to outside is adopted, the tensile strength is high, the pressure resistance is high, the wear resistance and the service life of the steel curtain belt reinforced wear-resistant pipe are far better than those of a traditional technology, and the steel curtain belt reinforced wear-resistant pipe has a series of advantages of a flexible composite pipe, can be coiled and efficiently transported, is fast to install, and is suitable for large-scale popularization and application. The utility model has the advantages of simple structure, small number of elbows, excellent wear resistance and capability of reducing wastes generated by frequently replacing pipelines, overcomes the defects of large number of connectors and elbows used in the traditional steel pipe laying process and high replacement cost, and conforms to the environmental protection concept.

Description

Technical Field

[0001] The utility model belongs to the technical field of pipeline materials, and particularly relates to a steel cord belt reinforced wear-resistant pipeline. Background Art

[0002] With the advancement of green mine construction and the development of mine construction, the requirements for pipeline materials in various industries are increasing day by day. Especially in the fields of mineral extraction, coal production, chemical industry, energy, etc., pipelines not only need to withstand high pressure, high temperature, and the erosion of corrosive fluids, but also need to have sufficient wear resistance and long-term stability. Although traditional pipelines such as steel pipes and polyethylene pipes meet the basic requirements to a certain extent, they often have problems such as poor corrosion resistance, insufficient pressure-bearing capacity, and high maintenance costs when facing complex and harsh industrial environments.

[0003] Under this background, the steel cord belt reinforced wear-resistant pipe technology came into being. This technology introduces steel cord as the reinforcing layer material, combines with a wear-resistant inner lining layer, uses the strip made of steel cord for winding as the reinforcing layer, and a polyethylene outer protective layer to form a pipeline with a three-layer composite structure. This design not only significantly improves the pressure-bearing capacity and wear resistance of the pipeline, but also can endow it with excellent corrosion resistance, flame retardancy, and antistatic properties by adding flame retardant and antistatic materials. Moreover, traditional steel pipes have poor wear resistance and high costs. A large number of connection joints and elbows are required during the installation and laying process. When used in long-term wear-resistant working conditions, they not only need to be frequently replaced, but also have high installation costs. While traditional polyethylene can reduce costs compared to steel pipes, its poor wear resistance makes the replacement frequency of this kind of pipeline faster in long-term wear-resistant working conditions, and the replaced pipelines cannot be reused again, which does not conform to the original intention of green mine construction. Therefore, in view of the above problems, it is necessary to make improvements. Content of the Utility Model

[0004] The technical problem solved by the utility model is to provide a steel cord belt reinforced wear-resistant pipeline. The pipe body is made of three layers of inner lining transmission layer, reinforcing layer, and outer protective layer arranged from inside to outside, with high tensile strength and strong pressure resistance. The steel cord belt reinforced wear-resistant pipe far exceeds the traditional technology in terms of both wear resistance and service life, and it has a series of advantages of flexible composite pipes, can be coiled and transported efficiently, installed quickly, with fewer elbows, solves the disadvantages of a large number of connectors and elbows used in the laying process of traditional steel pipes and high replacement costs, has excellent wear resistance, reduces the waste generated due to frequent pipeline replacement, and conforms to the environmental protection concept.

[0005] Technical solution adopted by the utility model: A steel cord reinforced wear-resistant pipeline, comprising a pipe body. The cross-sectional structure of the pipe body is successively provided with an inner lining transmission layer, a reinforcing layer and an outer protective layer from inside to outside, and the reinforcing layer is bonded and compounded with the inner lining transmission layer and the outer protective layer as a whole; the reinforcing layer is made of steel cord in the form of a pre-impregnated tape through a two-way winding method.

[0006] Among them, the inner lining transmission layer is made of ultra-high molecular weight polyethylene material.

[0007] Further, the inner lining transmission layer includes a wear-resistant layer and an inner lining layer, and the wear-resistant layer and the inner lining layer are extruded and formed by a co-extrusion process. The wear-resistant layer is made of an elastic polyolefin material, and the inner lining layer is made of high-density polyethylene or heat-resistant polyethylene material.

[0008] Further, the outer protective layer is made of high-density polyethylene or heat-resistant polyethylene material.

[0009] Further, color masterbatch or flame retardant and antistatic materials are added to the outer protective layer.

[0010] Advantages of the utility model compared with the prior art:

[0011] 1. The steel cord used as the reinforcing layer material in this technical solution is a strip with extremely high tensile strength. After being made into a pipeline, its pressure resistance performance is stronger than that of pipelines made of other types of reinforcing materials; the pipeline made of steel cord as the reinforcing layer material has strong anti-external impact performance while ensuring the internal pressure resistance of the pipeline.

[0012] 2. This technical solution designs two inner lining transmission layers according to the wear resistance requirements, and they have excellent wear resistance, meeting the requirements of different use occasions. Especially the inner lining transmission layer formed by co-extruding an elastic polyolefin material with high-density polyethylene or heat-resistant polyethylene is 100 times more wear-resistant than a steel pipe, 15 times more wear-resistant than high-density polyethylene, and even 5 times more wear-resistant than ultra-high molecular weight polyethylene, and has extremely wide applications in the field of wear-resistant conveying working conditions.

[0013] 3. This technical solution is convenient for construction, has a low installation cost, takes into account a series of advantages of flexible composite high-pressure conveying pipes, can be coiled for transportation, has a long single-pipe length, few connection joints, and has the advantages of convenient installation and fast construction.

[0014] 4. Due to its excellent wear resistance, this technical solution reduces the waste generated by frequent pipeline replacement, conforms to the environmental protection concept. At the same time, the high-efficiency conveying efficiency helps to reduce energy consumption and promote sustainable development. Due to its excellent performance, it is widely used in many industries such as mines, metallurgy, electric power, chemical industry, water conservancy, and construction, especially in occasions where it is necessary to transport highly abrasive, high-pressure, and corrosive media, and it shows its unique advantages. Description of the Drawings

[0015] Figure 1 is a schematic perspective view of the first embodiment of the present utility model;

[0016] Figure 2 is a schematic end view of the first embodiment of the present utility model;

[0017] Figure 3 is a schematic perspective view of the second embodiment of the present utility model;

[0018] Figure 4 is a schematic end view of the second embodiment of the present utility model. Detailed implementation manners

[0019] Next, in combination with the Figures 1-4 in the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0020] It should be noted that in this article, without contrary description, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0021] In this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without more limitations. Elements defined by the statement "including one..." do not exclude the presence of additional identical elements in the process, method, article or device including the said elements.

[0022] Embodiment 1

[0023] Steel cord reinforced wear-resistant pipe, such as Figures 1-2As shown in the figure, it includes a pipe body 4. The cross-sectional structure of the pipe body 4 is successively provided with an inner lining transmission layer 1, a reinforcing layer 2, and an outer protective layer 3 from the inside to the outside. The reinforcing layer 2 and the inner lining transmission layer 1 and the outer protective layer 3 are bonded and compounded into one body. The reinforcing layer 2 is made of a steel cord belt in the form of a prepreg tape by a bidirectional winding method. Among them, according to different production processes, there are various different specifications of tape materials to choose from. This kind of steel cord tape material usually uses polyethylene as the matrix resin. Through a tape-making device, the steel cord is pre-impregnated into the PE matrix to form a reinforcing material with no displacement of the reinforcing material and extremely high breaking strength, which can meet the production of large-diameter and high-pressure pipes.

[0024] When the wear resistance requirement is relatively small, for example, when transporting gravel with a relatively small surface roughness, the specific inner lining transmission layer 1 that can be selected is as follows: The inner lining transmission layer 1 is made of ultra-high molecular weight polyethylene material.

[0025] The outer protective layer 3 is as follows: The outer protective layer 3 is made of high-density polyethylene or heat-resistant polyethylene material; specifically, color masterbatch or flame-retardant antistatic material is added to the outer protective layer 3, which can be added according to the actual situation; the outer protective layer 3 mainly plays a protective role to prevent the pipeline from being damaged from the outside during transportation, laying, and use.

[0026] Example Two:

[0027] Steel cord belt reinforced wear-resistant pipeline, such as Figures 3-4 As shown in the figure, it includes a pipe body 4. The cross-sectional structure of the pipe body 4 is successively provided with an inner lining transmission layer 1, a reinforcing layer 2, and an outer protective layer 3 from the inside to the outside. The reinforcing layer 2 and the inner lining transmission layer 1 and the outer protective layer 3 are bonded and compounded into one body. The reinforcing layer 2 is made of a steel cord belt in the form of a prepreg tape by a bidirectional winding method. Among them, according to different production processes, there are various different specifications of tape materials to choose from. This kind of steel cord tape material usually uses polyethylene as the matrix resin. Through a tape-making device, the steel cord is pre-impregnated into the PE matrix to form a reinforcing material with no displacement of the reinforcing material and extremely high breaking strength, which can meet the production of large-diameter and high-pressure pipes.

[0028] When the wear resistance requirement is relatively high, such as transporting larger particle sand and gravel, the specific inner lining transmission layer 1 that can be selected is as follows: The inner lining transmission layer 1 includes a wear-resistant layer 1-1 and an inner lining layer 1-2, and the wear-resistant layer 1-1 and the inner lining layer 1-2 are extruded and formed by a co-extrusion process. The wear-resistant layer 1-1 is made of an elastic polyolefin material, and the inner lining layer 1-2 is made of high-density polyethylene or heat-resistant polyethylene material.

[0029] The outer protective layer 3 is as follows: The outer protective layer 3 is made of high-density polyethylene or heat-resistant polyethylene materials; specifically, color masterbatch or flame-retardant antistatic materials are added to the outer protective layer 3, which can be added according to the actual situation; the outer protective layer 3 mainly plays a protective role to prevent the pipeline from being damaged from the outside during transportation, laying and use.

[0030] The steel cord-reinforced wear-resistant pipe prepared by the above two embodiments is a composite pipe with excellent wear resistance and has great application space in working conditions with high wear resistance requirements. The innermost lining transmission layer 1 is in contact with the transmission medium and has high requirements for wear resistance. According to the type of the conveyed medium, an elastic polyolefin co-extruded wear-resistant layer or ultra-high molecular weight polyethylene is selected for molding. The principle is to melt the raw materials and then extrude them into shape. The reinforcing layer 2 uses steel cord as the reinforcing material. Different specifications and models of strip materials are selected according to different specifications, models and production processes, and the bidirectional winding method is adopted to meet its pressure-bearing performance requirements; the forming principle of the outer protective layer 3 is the same as that of the lining transmission layer 1, that is, the raw materials are extruded and then cooled and formed, covering the outside of the reinforcing layer 2, mainly playing a protective role; through this kind of reinforcing material in the form of prepreg as the reinforcing layer 2, an integral structure in which each structural layer does not delaminate can be formed, which is called a "bonded composite pipe". Compared with the traditional non-bonded structure, the overall performance of this kind of pipeline is better.

[0031] Strong pressure resistance: The steel cord used as the reinforcing layer material is a strip material with extremely high tensile strength. After being made into a pipeline, its pressure resistance is stronger than that of pipelines made of other types of reinforcing materials; for a pipeline made of steel cord as the reinforcing layer material, while ensuring the internal pressure resistance of the pipeline, the anti-external impact performance is also very strong;

[0032] Strong wear resistance: According to the wear resistance requirements, two kinds of lining transmission layers are designed, and their wear resistance is excellent, meeting the requirements of different use occasions. Especially, the elastic polyolefin material and high-density polyethylene or heat-resistant polyethylene are extruded into an integral lining transmission layer through a co-extrusion process. Its wear resistance is 100 times that of steel pipes, 15 times that of high-density polyethylene, and even 5 times that of ultra-high molecular weight polyethylene, and it has extremely wide applications in the field of wear-resistant conveying working conditions;

[0033] Convenient construction and low installation cost: Taking into account a series of advantages of flexible composite high-pressure conveying pipes, it can be coiled for transportation, has a long single pipe length, few connection joints, and has the advantages of convenient installation and fast construction;

[0034] More environmentally friendly, reducing waste and pollution: Due to its excellent wear resistance, the waste generated by frequent pipeline replacement is reduced, which conforms to the environmental protection concept.

[0035] Wide application fields: High-efficient conveying efficiency helps reduce energy consumption and promote sustainable development. Due to its excellent performance, it is widely used in multiple industries such as mining, metallurgy, electric power, chemical industry, water conservancy, and construction. Especially in occasions where high-abrasive, high-pressure, and corrosive media need to be conveyed, its unique advantages are even more prominent.

[0036] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be construed as limiting the claimed rights.

[0037] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. Steel curtain belt reinforced wear-resistant pipeline, characterized by: The invention comprises a pipe body (4), wherein the cross-sectional structure of the pipe body (4) comprises an inner lining transmission layer (1), a reinforcing layer (2) and an outer protective layer (3) arranged in sequence from the inside to the outside, and the reinforcing layer (2) is bonded and composited with the inner lining transmission layer (1) and the outer protective layer (3) to form a whole; the reinforcing layer (2) is made of a steel curtain tape in the form of a prepreg tape by bidirectional winding.

2. The steel curtain belt reinforced wear-resistant pipeline according to claim 1, characterized in that: The inner lining transmission layer (1) is made of ultra-high molecular weight polyethylene material.

3. The steel curtain belt reinforced wear-resistant pipeline according to claim 1, characterized in that: The lining transmission layer (1) comprises a wear-resistant layer (1-1) and an inner lining layer (1-2), and the wear-resistant layer (1-1) and the inner lining layer (1-2) are extruded by a co-extrusion process, the wear-resistant layer (1-1) is made of elastic polyolefin material, and the inner lining layer (1-2) is made of high-density polyethylene or heat-resistant polyethylene material.

4. The steel curtain belt reinforced wear-resistant pipe according to any one of claims 1 to 3, characterized in that: The outer protective layer (3) is made of high-density polyethylene or heat-resistant polyethylene material.

5. The steel curtain belt reinforced wear-resistant pipeline according to claim 4, characterized in that: The outer protective layer (3) is added with a color masterbatch or a flame retardant antistatic material.

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