High-pressure-resistant lining stainless steel composite pipe

Abstract

The utility model discloses a high-pressure-resistant lining stainless steel composite pipe, which relates to the technical field of stainless steel composite pipes and comprises a pipe main body, a lining groove is arranged in the middle of the pipe main body, a lining layer is arranged on the inner wall of the lining groove, and an outer coating layer is arranged on the outer side of the lining layer. The inner lining layer comprises hexagonal single bodies, reinforcing rods, ellipsoidal particles and connecting rods, the multiple groups of hexagonal single bodies are annularly distributed and connected into ring groups, the adjacent ring groups are fixedly connected through the multiple groups of connecting rods, and the ellipsoidal particles are fixedly connected to the middles of the reinforcing rods to form a reinforcing assembly. The ellipsoidal particles are ellipsoidal, when internal pressure impacts the pipe body and is transmitted to the ellipsoidal particles, the arc-shaped faces of the ellipsoidal particles decompose force in multiple directions and transmit the force to the hexagonal single bodies, the ellipsoidal particles surround the pipe to form a dense dot matrix, impact force is resolved, the situation that cracks occur after pressure impact is avoided, and the pressure resistance of the pipe is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of stainless steel composite pipes, in particular to a high-pressure resistant inner-lined stainless steel composite pipe. Background Art

[0002] A stainless steel composite pipe is a pipe formed by combining stainless steel with other materials (usually carbon steel or alloy steel). It combines the corrosion resistance and strength of stainless steel, as well as the cost-effectiveness and mechanical properties of other materials, and is widely used in fields such as chemical industry, petroleum, natural gas, food and beverage, etc.

[0003] However, in the prior art, during long-term high-pressure transportation of stainless steel composite pipes, the stress on the pipes varies, resulting in cracks easily occurring in the middle of the pipes due to uneven stress, affecting the transportation effect and production safety. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the problem in the prior art that during long-term high-pressure transportation of stainless steel composite pipes, the stress on the pipes varies, resulting in cracks easily occurring in the middle of the pipes due to uneven stress, affecting the transportation effect and production safety, and to propose a high-pressure resistant inner-lined stainless steel composite pipe.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A high-pressure resistant inner-lined stainless steel composite pipe includes a pipe body. An inner lining groove is formed in the middle of the pipe body. An inner lining layer is arranged on the inner wall of the inner lining groove. An outer covering layer is arranged on the outer side of the inner lining layer. The inner lining layer includes hexagonal monomers, reinforcing bars, ellipsoidal particles and connecting bars. Multiple groups of hexagonal monomers are distributed in a ring and connected into a ring group. Adjacent ring groups are fixedly connected by multiple groups of connecting bars. The ellipsoidal particles are fixedly connected to the middle of the reinforcing bars to form a reinforcing component. The reinforcing components are respectively arranged on the inner side and the outer side of the hexagonal monomers.

[0006] Preferably, the reinforcing bar is ellipsoidal.

[0007] Preferably, an inner chamfer is formed on the inner side of the inner lining groove, and the inclined surface of the inner chamfer abuts against the edge of the inner lining layer.

[0008] Preferably, one side of the outer covering layer is fixedly connected to the inclined surface of the inner chamfer.

[0009] Preferably, the depth of the inner lining groove is half of the thickness of the pipe body.

[0010] Preferably, an internal thread area is formed on the inner side of one end of the pipe body, and an external thread area is formed on the outer side of the other end of the pipe body.

[0011] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0012] 1. In the present utility model, the inner lining layer is wrapped around the middle of the pipe body. The ellipsoidal particles are ellipsoidal in shape. When the internal pressure impacts the pipe body and is transmitted to the ellipsoidal particles, the arc surface of the ellipsoidal particles decomposes the force in multiple directions and transmits it to the hexagonal monomers. Multiple ellipsoidal particles form a dense lattice around the pipeline to dissipate the impact force, avoid cracks after pressure impact, and improve the pressure resistance of the pipe.

[0013] 2. In the present utility model, an inner lining groove is opened in the middle of the pipe body. The depth of the inner lining groove accounts for half of the thickness of the pipe body, which not only ensures the thickness requirement but also can accommodate the inner lining layer. At the same time, an inner chamfer is opened on the side of the inner lining groove to clamp the inner lining layer, which is also beneficial to making the outer covering layer and the pipe body welded more tightly, and improving the overall structural strength of the pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional structural schematic diagram of a high-pressure-resistant inner-lined stainless steel composite pipe proposed by the present utility model;

[0015] Figure 2 is a three-dimensional structural schematic diagram of the inner lining layer in a high-pressure-resistant inner-lined stainless steel composite pipe proposed by the present utility model;

[0016] Figure 3 is a three-dimensional structural schematic diagram of a part of a high-pressure-resistant inner-lined stainless steel composite pipe proposed by the present utility model;

[0017] Figure 4 is the present utility model Figure 3 The enlarged three-dimensional structural schematic diagram at position A in.

[0018] Legend: 1. Pipe body; 2. Internal thread area; 3. Outer covering layer; 4. External thread area; 5. Inner lining layer; 51. Hexagonal monomer; 52. Reinforcing bar; 53. Ellipsoidal particle; 54. Connecting bar; 6. Inner lining groove; 7. Inner chamfer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the present utility model will be further described below with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0020] Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the limitations of the specific embodiments disclosed in the following specification.

[0021] Embodiment 1: AsFigure 1 - Figure 4 As shown, the utility model provides a high-pressure resistant lined stainless steel composite pipe, including a pipe body 1, a lining groove 6 is opened in the middle of the pipe body 1, the inner wall of the lining groove 6 is provided with a lining layer 5, and the outer side of the lining layer 5 is provided with an outer layer 3, the lining layer 5 includes a hexagonal monomer 51, a reinforcing rod 52, an ellipsoidal particle 53 and a connecting rod 54, a plurality of groups of hexagonal monomers 51 are distributed in a ring and connected into a ring group, adjacent ring groups are fixedly connected by a plurality of groups of connecting rods 54, the ellipsoidal particle 53 is fixedly connected to the middle of the reinforcing rod 52 to form a reinforcing assembly, the reinforcing assemblies are respectively arranged on the inner and outer sides of the hexagonal monomer 51, and the reinforcing rod 52 is ellipsoidal.

[0022] The following is a detailed description of the specific settings and functions of this embodiment: multiple hexagonal monomers 51 are distributed in a ring and connected end to end to form a ring group, and the ring group is connected by a connecting rod 54 and a reinforcing assembly composed of a reinforcing rod 52 and an ellipsoidal particle 53. As a result, the inner lining layer 5 is wrapped around the middle of the pipe body 1, and the ellipsoidal particle 53 is ellipsoidal. When the internal pressure impacts the pipe body 1 and is transmitted to the ellipsoidal particle 53, the curved surface of the ellipsoidal particle 53 decomposes the force in multiple directions and transmits it to the hexagonal monomer 51. Multiple ellipsoidal particles 53 form a dense lattice around the pipe, which dissipates the impact force, avoids cracks after the pressure impact, and improves the pressure resistance of the pipe.

[0023] Example 2: Figure 1 - Figure 4 As shown, an inner chamfer 7 is provided on the inner side of the inner lining groove 6, the inclined surface of the inner chamfer 7 abuts against the edge of the inner lining layer 5, one side of the outer layer 3 is fixedly connected to the inclined surface of the inner chamfer 7, the depth of the inner lining groove 6 is half the thickness of the pipe body 1, an internal threaded area 2 is provided on the inner side of one end of the pipe body 1, and an external threaded area 4 is provided on the outer side of the other end of the pipe body 1.

[0024] The effect achieved by the entire embodiment is that an internal threaded area 2 and an external threaded area 4 are respectively provided at both ends of the pipe main body 1. Between two adjacent pipe main bodies 1, the external threaded area 4 is screwed into the internal threaded area 2 to complete the connection and installation, and an inner lining groove 6 is provided in the middle of the pipe main body 1. The depth of the inner lining groove 6 accounts for half of the thickness of the pipe main body 1, which not only meets the thickness requirements but also can accommodate the inner lining layer 5. At the same time, an inner chamfer 7 is provided on the side of the inner lining groove 6 for clamping the inner lining layer 5, which is also conducive to tighter welding of the outer layer 3 and the pipe main body 1, thereby improving the overall structural strength of the pipe.

[0025] Usage method and working principle of the device: When using the high-pressure resistant stainless steel composite pipe with an inner lining, a lining groove 6 is opened in the middle of the pipe body 1. The depth of the lining groove 6 accounts for half of the thickness of the pipe body 1, which not only ensures the thickness requirement but also can accommodate the inner lining layer 5. At the same time, an inner chamfer 7 is opened on the side of the lining groove 6 to clamp the inner lining layer 5, which is also beneficial to make the welding between the outer covering layer 3 and the pipe body 1 more airtight. Among them, a plurality of hexagonal monomers 51 are annularly distributed and connected end to end to form a ring group. The ring group is connected by a reinforcing assembly composed of a connecting rod 54, a reinforcing rod 52 and ellipsoidal particles 53. Thus, the inner lining layer 5 is coated on the middle of the pipe body 1. The ellipsoidal particles 53 are ellipsoidal. When the internal pressure impacts the pipe body 1 and is transmitted to the ellipsoidal particles 53, the arc surface of the ellipsoidal particles 53 decomposes the force in multiple directions and transmits it to the hexagonal monomers 51. A plurality of ellipsoidal particles 53 form a dense dot matrix around the pipeline to resolve the impact force.

[0026] The above are only the preferred embodiments of the present invention, and are not limitations to the present invention in other forms. Any person skilled in the art may use the technical content disclosed above to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims

1. A high-pressure resistant inner-lined stainless steel composite pipe, comprising a pipe body (1), characterized in that: A lining groove (6) is provided in the middle of the pipe body (1). A lining layer (5) is arranged on the inner wall of the lining groove (6). An outer covering layer (3) is arranged on the outer side of the lining layer (5). The lining layer (5) includes hexagonal monomers (51), reinforcing rods (52), ellipsoidal particles (53) and connecting rods (54). Multiple groups of the hexagonal monomers (51) are annularly distributed and connected into a ring group. Adjacent ring groups are fixedly connected by multiple groups of connecting rods (54). The ellipsoidal particles (53) are fixedly connected to the middle of the reinforcing rods (52) to form a reinforcing assembly. The reinforcing assemblies are respectively arranged on the inner side and the outer side of the hexagonal monomers (51).

2. The high-pressure resistant inner-lined stainless steel composite pipe according to claim 1, wherein: The reinforcing rod (52) is ellipsoidal in shape.

3. The high-pressure resistant inner lined stainless steel composite pipe according to claim 2, characterized in that: An inner chamfer (7) is provided on the inner side of the lining groove (6). The inclined surface of the inner chamfer (7) abuts against the edge of the lining layer (5).

4. A high-pressure-resistant inner-lined stainless steel composite pipe according to claim 3, characterized in that: One side of the outer covering layer (3) is fixedly connected to the inclined surface of the inner chamfer (7).

5. The high-pressure resistant inner lined stainless steel composite pipe according to claim 4, wherein: The depth of the lining groove (6) is half of the thickness of the pipe body (1).

6. The high-pressure resistant inner lined stainless steel composite pipe according to claim 5, wherein: An internal thread area (2) is provided on the inner side of one end of the pipe body (1). An external thread area (4) is provided on the outer side of the other end of the pipe body (1).

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