Steel reinforced super high pressure integrated molded PFA pipe

Abstract

The utility model discloses a kind of steel bone reinforced type superhigh pressure integrated moulding lining PFA pipeline, including outer tube, reinforcing pipe and anticorrosion lining.The steel bone reinforced type superhigh pressure integrated moulding lining PFA pipeline utilizes reinforcing pipe to improve the structural strength of anticorrosion lining, under the working condition that the pressure difference in pipeline is larger, make anticorrosion lining have higher deformation prevention and breakage prevention ability, improve the service life of pipeline;Utilize two limit rings and multiple positioning structures can play the role of positioning fixation to reinforcing pipe, prevent displacement of reinforcing pipe in use process, to ensure the reliability of anticorrosion lining positioning fit.

Description

Technical Field

[0001] This utility model relates to a pipeline, and more particularly to a steel-reinforced ultra-high pressure integrated molded PFA pipeline. Background Technology

[0002] Pipelines are a vital component of modern infrastructure, widely used for transporting water, oil, natural gas, and other liquids or gases. Over time, pipelines can be damaged due to various factors such as corrosion, wear, internal pressure, or environmental influences. Existing technologies include pipelines with plastic liners, typically where the liner is glued or directly heat-pressed onto the inner wall of the steel pipe. While these offer good corrosion protection, they struggle to withstand negative pressure conditions inside the pipeline. Under negative pressure, the plastic liner is highly susceptible to peeling off from the steel pipe wall, resulting in deformation and breakage. Therefore, a steel-reinforced ultra-high pressure integrated molded PFA-lined pipeline is proposed. This pipeline boasts high structural strength and can effectively handle large pressure differences between the inside and outside of the pipeline. Utility Model Content

[0003] Purpose of the utility model: To provide a steel-reinforced ultra-high pressure integrated molded PFA-lined pipe with high structural strength, which can better cope with situations where there is a large pressure difference between the inside and outside of the pipe.

[0004] Technical solution: The steel-reinforced ultra-high pressure integrated molded PFA pipe provided by this utility model includes an outer pipe, a reinforcing pipe, and an anti-corrosion liner; the reinforcing pipe is coaxially installed inside the outer pipe through multiple positioning structures; limit rings are provided at both ends of the outer pipe; the two ends of the reinforcing pipe are respectively pressed against the opposite sides of the two limit rings; several reinforcing holes are provided on the reinforcing pipe; the anti-corrosion liner is coaxially fitted to the inner wall of the outer pipe, and the anti-corrosion liner wraps around the reinforcing pipe, the two limit rings, and each positioning structure.

[0005] Furthermore, the positioning structure includes two oblique inserts and two positioning strips; both positioning strips are obliquely fixed to the inner wall of the outer tube and are both inclined toward the reinforcing tube; the two positioning strips are inclined in opposite directions; both oblique inserts are obliquely fixed to the outer wall of the reinforcing tube; the two oblique inserts are respectively inserted and snapped between the reinforcing tube and the two positioning strips.

[0006] Furthermore, a fixed flange and a limiting ring are respectively installed at both ends of the outer tube; a loose flange is fitted onto the outer tube; and an annular groove for engaging the limiting ring is provided on the loose flange.

[0007] Furthermore, reinforced flanges are provided at both ends of the anti-corrosion lining, and the two reinforced flanges are respectively pressed tightly against the opposite sides of the fixed flange and the limiting ring.

[0008] Furthermore, the corrosion-resistant lining is made of PFA plastic.

[0009] Compared with the prior art, the advantages of this utility model are: by using a reinforcing tube to improve the structural strength of the anti-corrosion lining, the anti-corrosion lining has a higher resistance to deformation and damage under working conditions with a large pressure difference between the inside and outside of the pipeline, thus improving the service life of the pipeline; by using two limiting rings and multiple positioning structures, the reinforcing tube can be positioned and fixed to prevent displacement of the reinforcing tube during use, thereby ensuring the reliability of the anti-corrosion lining's positioning and fit. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model;

[0011] Figure 2 This is a partial cross-sectional view of the present invention;

[0012] Figure 3 This is an enlarged cross-sectional view of the present invention;

[0013] Figure 4 This is a structural diagram of the reinforcing tube of this utility model;

[0014] In the diagram: 1. Outer pipe; 2. Fixed flange; 3. Limiting ring; 4. Loose flange; 5. Limiting ring; 6. Reinforcing pipe; 7. Reinforcing hole; 8. Angled insert; 9. Positioning strip; 10. Corrosion-resistant lining; 11. Reinforcing flange. Detailed Implementation

[0015] The technical solution of this utility model will be described in detail below with reference to the accompanying drawings, but the protection scope of this utility model is not limited to the described embodiments.

[0016] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0017] In the description of this utility model, it should be understood that the terms "left", "right", "front", "back", "up", "down", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Example 1:

[0019] like Figure 1-4 As shown, the steel-reinforced ultra-high pressure integrated molded PFA pipe provided by this utility model includes: an outer pipe 1, a reinforcing pipe 6, and an anti-corrosion lining 10.

[0020] The reinforcing tube 6 is coaxially installed inside the outer tube 1 through multiple positioning structures, and there is a gap between the reinforcing tube 6 and the outer tube 1; a limiting ring 5 is provided on the inner wall of both openings of the outer tube 1; the reinforcing tube 6 is located between the two limiting rings 5, and its two end edges are respectively pressed against the two limiting rings 5; a number of reinforcing holes 7 are provided on the reinforcing tube 6; the anti-corrosion liner 10 is fitted and installed on the inner wall of the outer tube 1, and the anti-corrosion liner 10 wraps the reinforcing tube 6, the two limiting rings 5 ​​and each positioning structure; the circumferential inner wall of the anti-corrosion liner 10 is coaxial with the outer tube 1.

[0021] The reinforcing tube 6 is used to improve the structural strength of the anti-corrosion lining 10. Under working conditions with large pressure difference between the inside and outside of the pipeline, the anti-corrosion lining 10 has a higher resistance to deformation and damage, and improves the service life of the pipeline. The two limiting rings 5 ​​and multiple positioning structures can play a role in positioning and fixing the reinforcing tube 6, preventing the reinforcing tube 6 from being displaced during use, thereby ensuring the reliability of the positioning and fit of the anti-corrosion lining 10.

[0022] Furthermore, the positioning structure includes two oblique inserts 8 and two positioning strips 9; one long side of each of the two positioning strips 9 is fixed to the inner wall of the outer tube 1, and the long side of the positioning strip 9 is parallel to the axis of the outer tube 1; the other long side of the two positioning strips 9 is inclined toward the reinforcing tube 6, and the inclination directions of the two positioning strips 9 are opposite; the two oblique inserts 8 are obliquely fixed to the outer wall of the reinforcing tube 6, and the long side is parallel to the axis of the reinforcing tube; the two oblique inserts 8 are respectively attached to the two positioning strips 9, and the edge of the attached side is snapped between the reinforcing tube 6 and the corresponding positioning strip 9.

[0023] By inserting two oblique inserts 8 between the two positioning strips 9 and the reinforcing tube 6, the reinforcing tube 6 can be positioned circumferentially and radially to prevent it from rotating. At the same time, the oblique inserts 8 can act as reinforcing ribs to enhance the structural strength of the reinforcing tube 6 and reduce the possibility of deformation and damage to the anti-corrosion lining 10 when the negative pressure inside the pipe is strong.

[0024] Furthermore, a fixed flange 2 is integrally provided on one end of the outer tube 1; a limit ring 3 is integrally provided on the other end of the outer tube 1; a loose flange 4 is fitted on the outer tube 1; and an annular groove for snapping the limit ring 3 is provided on the loose flange 4.

[0025] The use of fixed flange 2 and loose flange 4 facilitates the connection and installation between pipelines. When the loose flange 4 deforms, it does not generate additional torque on the outer pipe 1, and it is easy to rotate and adjust before connecting with the flanges of other pipelines.

[0026] Furthermore, a reinforcing flange 11 is provided at both ends of the anti-corrosion lining 10, and the two reinforcing flanges 11 are respectively pressed tightly against the opposite sides of the fixed flange 2 and the limiting ring 3.

[0027] Two reinforcing flanges 11 are used to ensure that the anti-corrosion lining 10 completely covers the inner wall of the outer pipe 1. When the two pipes are connected, the two reinforcing flanges 11 press against each other to prevent leakage and prevent materials from seeping into the gaps and corroding the outer pipe 1.

[0028] Furthermore, the corrosion-resistant liner 10 is made of PFA plastic. PFA plastic is fusible polytetrafluoroethylene, and its material properties give the corrosion-resistant liner 10 excellent chemical resistance and high-temperature resistance.

[0029] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A steel-reinforced ultra-high pressure integrated molded PFA-lined pipe, characterized in that: It includes an outer tube (1), a reinforcing tube (6), and an anti-corrosion liner (10); the reinforcing tube (6) is coaxially installed inside the outer tube (1) through multiple positioning structures; a limit ring (5) is provided at both ends of the outer tube (1); the two ends of the reinforcing tube (6) are respectively pressed against the opposite sides of the two limit rings (5); a number of reinforcing holes (7) are provided on the reinforcing tube (6); the anti-corrosion liner (10) is coaxially fitted to the inner wall of the outer tube (1), and the anti-corrosion liner (10) wraps the reinforcing tube (6), the two limit rings (5), and each positioning structure.

2. The steel-reinforced ultra-high pressure integrated molded PFA-lined pipe according to claim 1, characterized in that: The positioning structure includes two oblique inserts (8) and two positioning strips (9); the two positioning strips (9) are both fixed obliquely on the inner side wall of the outer tube (1) and are both inclined toward the reinforcing tube (6); the two positioning strips (9) are inclined in opposite directions; the two oblique inserts (8) are both fixed obliquely on the outer side wall of the reinforcing tube (6); the two oblique inserts (8) are respectively inserted and snapped between the reinforcing tube (6) and the two positioning strips (9).

3. The steel-reinforced ultra-high pressure integrated molded PFA-lined pipe according to claim 1, characterized in that: Fixed flanges (2) and limiting rings (3) are respectively provided at both ends of the outer tube (1); a loose flange (4) is fitted on the outer tube (1); an annular groove for snapping the limiting ring (3) is provided on the loose flange (4).

4. The steel-reinforced ultra-high pressure integrated molded PFA-lined pipe according to claim 1, characterized in that: Reinforcing flanges (11) are provided at both ends of the anti-corrosion lining (10), and the two reinforcing flanges (11) are pressed tightly against the opposite sides of the fixed flange (2) and the limiting ring (3).

5. The steel-reinforced ultra-high pressure integrated molded PFA-lined pipe according to claim 1, characterized in that: The corrosion-resistant lining (10) is made of PFA plastic.

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