Double-layer reinforced modified polyolefin steel-plastic composite pipe

Abstract

The utility model discloses a double-layer reinforced modified polyolefin steel-plastic composite pipe, which belongs to the technical field of pipelines, and comprises two pipes, one end of one pipe is fixedly connected with a bell mouth, one end of the other pipe is fixedly connected with an interface, and the other end of the other pipe is fixedly connected with a steel pipe. Two sealing rings are installed on the outer wall of the connector. According to the utility model, the pipe with a double-layer structure is designed, the inner layer of the pipe is made of a high polymer material which is mainly made of polyethylene resin, the outer layer of the pipe is made of a reinforced and modified polyolefin DRPO-M material, aids such as an anti-aging agent, a toughening agent and a compatilizer are added into the composite material, and basalt fibers are added into the layer wall of the pipe as a reinforcing material; the strength and rigidity of the pipe are remarkably improved, the steel belt serves as a reinforcing framework, the ring stiffness and the overall strength of the pipe are greatly improved, and the pipe can bear larger external pressure.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline technical field, in particular to a kind of double-layer reinforced modified polyolefin steel plastic composite pipe. BACKGROUND

[0002] In modern infrastructure construction, drainage system is the "underground lifeline" of city, plays a vital role to the normal operation of city and the protection of ecological environment, with the acceleration of urbanization process, the rapid development of industry and the increasingly strict environmental protection requirement, traditional drainage pipe material gradually exposes many problems, difficult to meet the complex and changeable engineering demand of present.

[0003] Traditional drainage pipe material has poor corrosion resistance, in the sewage environment containing acid, alkali and other corrosive media, it is easily eroded, leading to pipe wall thinning, structural strength decreases, shortens service life, increases maintenance cost, ordinary plastic pipe has certain corrosion resistance and lightness, but its ring stiffness is low, and it is easily deformed when bearing larger external pressure, affects drainage effect, and performs poorly in anti-aging performance, and after long-term exposure in natural environment or being irradiated by ultraviolet, it can appear aging, embrittlement and other phenomena, reduces the performance and reliability of pipe material.

[0004] Therefore, it is urgent to provide a double-layer reinforced modified polyolefin steel plastic composite pipe to solve the above problems. CONTENT OF UTILITY MODEL

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and provide a double-layer reinforced modified polyolefin steel plastic composite pipe.

[0006] To solve the above technical problems, one technical scheme of the utility model is to provide a double-layer reinforced modified polyolefin steel plastic composite pipe, which comprises two pipe materials, one end of one of the pipe materials is fixedly connected with a socket, and one end of the other pipe material is fixedly connected with a joint, and two sealing rings are installed on the outer wall of the joint.

[0007] The utility model is further provided as follows: the pipe material is of a special double-layer structure, and comprises, from outside to inside, a composite material shell, a steel belt and a corrosion-resistant layer.

[0008] Through the technical scheme, the inner layer of the pipe material is a high polymer material mainly composed of polyethylene resin, the outer layer is a reinforced modified polyolefin DRPO-M material, anti-aging, toughening, and compatibilizer and other additives are added in the composite material shell, and basalt fibers are added in the pipe material layer wall as reinforcing materials, the addition of the anti-aging additive can effectively slow down the aging speed of the pipe material during long-term use, the addition of the toughening additive improves the toughness of the pipe material, so that the pipe material can effectively absorb energy and is not easy to break when subjected to external force impact, the compatibilizer helps to improve the compatibility between the modified polyolefin and other added materials, so that various materials can be better fused together to form a uniform and stable structure, the basalt fibers added in the outer layer of the pipe wall as reinforcing materials significantly improve the strength and rigidity of the pipe material, the steel belt as the reinforcing framework greatly improves the rigidity and overall strength of the pipe material, so that it can withstand greater external pressure, the corrosion-resistant layer can effectively isolate the contact between the steel belt and the corrosive medium in the outside world, prevent the steel belt from rusting and corroding, and prolong the service life of the pipe material.

[0009] The utility model further sets up: steel band is spiral around between the two layers of pipe material.

[0010] Through the technical scheme, the spiral steel belt can greatly improve the ring rigidity of the pipe material, so that it can withstand greater external pressure, and the spiral structure can uniformly disperse the received pressure to the whole pipe material, avoid stress concentration, and when facing complex external force, the stress of each part of the pipe material is more balanced, the risk of local breakage or damage is reduced, the service life is prolonged, and the maintenance cost is reduced.

[0011] The utility model further sets up: the socket and pipe material are integrally formed structure, are formed through injection molding process.

[0012] Through the technical scheme, the integrally formed structure makes the socket and the pipe material not exist joint gap, and it is a complete whole, and the connecting strength is greatly improved, in the process of using, can better bear the fluid pressure in the pipe material and various acting force of outside, is not easy to appear the problems such as loose, disjointed of joint, guarantees the stable operation of pipeline system.

[0013] The utility model further sets up: the interface outer surface is provided with a plurality of anti-skid convex structures.

[0014] Through the technical scheme, the anti-skid convex increases the friction between the interface and the socket, so that the connection between the two is more stable, and the interface is not easy to come out of the socket when the pipeline is subjected to external force pulling, vibration or water flow impact, ensuring the sealing and integrity of the drainage system.

[0015] The utility model further sets up: the inner diameter size of the socket is compatible with the outer diameter size of the interface.

[0016] Through the technical scheme, the size is adapted, the socket and the interface can be tightly matched, the gap between the socket and the interface is extremely small, and the loosening and falling off in use is effectively avoided, in the application scene of buried drainage and the like, the pipeline system can still maintain stable connection and maintain normal operation of the drainage system under the action of external forces such as soil extrusion and ground load for a long time.

[0017] The inner wall of the socket is provided with a sealing groove matched with the sealing ring.

[0018] Through the technical scheme, the sealing groove provides a precise installation position for the sealing ring, so that the sealing ring can be accurately positioned during installation, and deviation and distortion of the sealing ring are avoided, the reliability of the sealing performance is ensured, and in large-scale pipeline installation engineering, the sealing groove can enable construction personnel to quickly and accurately install the sealing ring, and construction efficiency is improved.

[0019] The utility model has the advantages that:

[0020] 1. The utility model discloses a pipe material with a double-layer structure, wherein the inner layer of the pipe material is a high molecular material mainly composed of polyethylene resin, the outer layer is a reinforced modified polyolefin DRPO-M material, anti-aging, toughening and compatibility agents and other additives are added in the composite material, and basalt fibers are added in the pipe material layer wall as reinforcing materials, which significantly improves the strength and rigidity of the pipe material, and the steel belt as a reinforcing framework greatly improves the ring rigidity and overall strength of the pipe material, so that the pipe material can withstand greater external pressure.

[0021] 2. The utility model discloses a flexible socket type interface, which makes the pipe material installation process more simple and convenient, and construction personnel can successfully insert the interface into the socket 5 without complex operation and professional skills, reduces the construction difficulty, reduces the construction time and labor cost, and improves the construction efficiency and quality. DRAWINGS

[0022] Figure 1 It is a perspective view of the utility model;

[0023] Figure 2 It is a Figure 1 transverse sectional view;

[0024] Figure 3 It is a Figure 2 enlarged view of part A in figure 6;

[0025] Figure 4 It is a socket structure schematic view of the utility model;

[0026] Figure 5 It is an interface structure schematic view of the utility model.

[0027] In the figure: 1, pipe material; 2, composite material shell; 3, steel belt; 4, anticorrosive layer; 5, socket; 6, joint; 7, sealing ring. DETAILED DESCRIPTION

[0028] The advantages and features of the present application will be more easily understood by the skilled in the art through the detailed description of the preferred embodiments of the present application in conjunction with the accompanying drawings, so that the scope of protection of the present application can be more clearly defined.

[0029] Please refer to Figure 1 - Figure 3 A double-layer reinforced modified polyolefin steel-plastic composite pipe, comprising two pipe materials 1, the pipe material 1 is a special double-layer structure, which comprises, from outside to inside, a composite material shell 2, a steel belt 3 and an anticorrosive layer 4, the inner layer of the pipe material 1 is a high molecular material mainly composed of polyethylene resin, and the outer layer is a reinforced modified polyolefin DRPO-M material, anti-aging, toughening and compatibilizer and other additives are added in the composite material shell 2, and basalt fibers are added in the wall of the pipe material 1 as reinforcing materials, the addition of the anti-aging additive can effectively slow down the aging speed of the pipe material 1 during long-term use, the addition of the toughening additive improves the toughness of the pipe material 1, so that it can effectively absorb energy and is not easy to break when subjected to external force impact, the compatibilizer helps to improve the compatibility between the modified polyolefin and other added materials, so that various materials can be better integrated together to form a uniform and stable structure, the basalt fibers added in the outer layer of the pipe wall serve as reinforcing materials, which significantly improve the strength and rigidity of the pipe material 1, the steel belt 3 is spirally wound between the two layers of the pipe material 1, the spiral steel belt 3 can greatly improve the ring stiffness of the pipe material 1, so that it can withstand greater external pressure, the spiral structure can uniformly disperse the received pressure to the whole pipe material 1, avoiding stress concentration, when facing complex external forces, the stress on each part of the pipe material 1 is more balanced, reducing the risk of local breakage or damage, prolonging the service life and reducing the maintenance cost, the steel belt 3 serves as a reinforcing framework, greatly improving the ring stiffness and overall strength of the pipe material 1, so that it can withstand greater external pressure, the inner wall of the inner layer is coated with an anticorrosive layer 4, the anticorrosive layer 4 is made of epoxy coal tar paint and is formed by a multi-pass coating process, the epoxy coal tar paint has excellent chemical corrosion resistance and can effectively resist the erosion of acid-base substances in the soil, underground water and sewage on the outer layer of the pipe material 1, the multi-pass coating process increases the thickness of the anticorrosive layer 4 and makes it more uniform, further enhancing the corrosion protection effect and prolonging the service life of the pipe material 1, which can effectively isolate the contact between the steel belt 3 and the corrosive medium outside, prevent the steel belt 3 from rusting and corrosion, and prolong the service life of the pipe material 1.

[0030] As Figure 4 and Figure 5As shown, one end of one pipe 1 is fixedly connected with a socket 5, the socket 5 is an integral molding structure with the pipe 1, is formed through an injection molding process, the integral molding structure makes the socket 5 and the pipe 1 between the joint gap, is a complete whole, its connecting strength is greatly promoted, in the use process, can better withstand the fluid pressure inside the pipe 1 and the various external forces, not prone to problems such as loose connection, dislocation, etc., guarantee the stable operation of the pipeline system, the inner diameter size of the socket 5 is compatible with the outer diameter size of the interface 6, the compatible size makes the socket 5 and the interface 6 can be closely matched, the gap between them is extremely small, effectively avoids the loose, falling off in the use process, in the application scene such as buried drainage, can ensure that the pipeline system still maintains stable connection under the action of external forces such as soil extrusion, ground load for a long time, maintains the normal operation of the drainage system, the other pipe 1 is fixedly connected with the interface 6 at one end, the outer surface of the interface 6 is provided with a plurality of anti-skid convex structures, the anti-skid convex increases the friction between the interface 6 and the socket 5, makes the connection more stable, when the pipeline is subjected to external force pulling, vibration or water flow impact, the interface 6 is not easy to come out of the socket 5, ensure the sealing and integrity of the drainage system, the outer wall of the interface 6 is provided with two sealing rings 7, the inner wall of the socket 5 is provided with a sealing groove matched with the sealing ring 7, the sealing groove provides a precise installation position for the sealing ring 7, so that it can be accurately positioned during installation, avoid the sealing ring 7 from being offset, twisted and the like, ensure the reliability of the sealing performance, in large-scale pipeline installation engineering, the sealing groove can enable the construction personnel to quickly and accurately install the sealing ring 7, improve the construction efficiency.

[0031] In use, the pipe 1 adopts a special double-layer structure, the inner layer is a high molecular material mainly composed of polyethylene resin, the outer layer is a reinforced modified polyolefin DRPO-M material, the steel belt 3 serves as a framework to improve the ring rigidity and overall strength, and the composite material shell 2 is added with anti-aging, toughening and compatibility agent and other additives, the anti-aging additive delays the aging of the pipe 1, so that the pipe 1 is not prone to performance degradation during long-term use in a natural environment, the toughening additive enhances the toughness, can absorb energy when subjected to external impact, reduces the risk of rupture, the compatibility agent improves the compatibility between materials, ensures uniform fusion of various materials, improves the overall performance, the outer layer corrosion-resistant layer 4 is made of epoxy coal tar pitch coating through a multi-pass coating process, can resist the erosion of acid and alkali substances in soil, underground water and sewage, prevent the steel belt 3 from rusting and corroding, and the increased thickness and uniformity further strengthen the corrosion-resistant effect, prolong the service life of the pipe 1, the socket 5 is integrally formed with the pipe 1, and the inner diameter is compatible with the outer diameter of the interface 6, thereby enhancing the connection stability, the sealing groove in the inner wall of the socket 5 accurately positions the sealing ring 7, ensures the sealing performance, prevents leakage, the anti-skid convex on the outer surface of the interface 6 increases the friction with the socket 5, and the interface 6 is not easy to come out when subjected to external pulling, vibration or water flow impact, thereby maintaining the sealing and integrity of the drainage system.

[0032] The above merely illustrates the embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation, or direct or indirect application in other related technical fields, which are made by using the content of the present application specification and drawings, are also included in the patent protection scope of the present application.

Claims

1. A double-layer reinforced modified polyolefin steel-plastic composite pipe comprising two pipe materials (1), characterized in that: One end of the pipe (1) is fixedly connected with a socket (5), and the other end of the pipe (1) is fixedly connected with a connector (6), and the outer wall of the connector (6) is provided with two sealing rings (7).

2. A double-layer reinforced modified polyolefin steel-plastic composite pipe according to claim 1, characterized in that: The pipe (1) has a special double-layer structure, and from outside to inside, it is composed of a composite material shell (2), a steel belt (3) and a corrosion-resistant layer (4).

3. A double-layer reinforced modified polyolefin steel-plastic composite pipe according to claim 2, characterized in that: The steel belt (3) is spirally arranged between the two layers of the pipe (1).

4. The dual layer reinforced modified polyolefin steel-plastic composite pipe according to claim 1, characterized in that: The socket (5) and the pipe (1) are integrally formed, and are formed by an injection molding process.

5. The dual layer reinforced modified polyolefin steel-plastic composite pipe according to claim 1, characterized in that: The outer surface of the connector (6) is provided with a plurality of anti-skid convex structures.

6. A double enhanced modified polyolefin steel-plastic composite pipe according to claim 5, characterized in that: The inner diameter size of the socket (5) is matched with the outer diameter size of the connector (6).

7. The dual layer reinforced modified polyolefin steel-plastic composite pipe according to claim 4, characterized in that: The inner wall of the socket (5) is provided with a sealing groove matched with the sealing ring (7).

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