Steel reinforced super high pressure integrated molded PFA elbow

Abstract

The utility model discloses a kind of steel bone reinforced type superhigh pressure integrated moulding lining PFA elbow, including external elbow pipe, combined elbow pipe and anticorrosion lining.The steel bone reinforced type superhigh pressure integrated moulding lining PFA elbow can improve the structural strength of anticorrosion lining and external elbow pipe using combined elbow pipe, compared with the anticorrosion pipeline of traditional steel pipe and lining combination, the structural strength of the utility model is higher, can withstand high pressure, the deformation damage probability of anticorrosion lining and external elbow pipe is lower;Utilize anticorrosion lining to cover the inner wall of external elbow pipe and wrap combined elbow pipe, so that anticorrosion lining can play the role of chemical corrosion protection and high temperature protection to external elbow pipe and combined elbow pipe;Using live sleeve flange is convenient for butt joint with external elbow pipe;Using limiting flanging can be extruded when installing butt joint, and the flanging of external elbow pipe is closely attached, play good sealing effect, can guarantee the structural strength of anticorrosion lining two pipe mouths simultaneously.

Description

Technical Field

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

[0002] In the chemical industry, various types of corrosion-resistant pipes are frequently used, and bends are commonly used connecting pipes. In order to achieve corrosion resistance, a corrosion-resistant lining is required inside the bend. However, existing corrosion-resistant pipes have the anti-corrosion lining glued or directly hot-pressed onto the inner wall of the bend, which makes the structural strength unreliable. During long-term use, the pipe wall may separate. When high pressure occurs inside the pipe, it may cause damage to the corrosion-resistant lining. Utility Model Content

[0003] Purpose of the utility model: To provide a steel-reinforced ultra-high pressure integrated molded PFA elbow with a high strength anti-corrosion lining structure that can withstand high pressure.

[0004] Technical Solution: The steel-reinforced ultra-high pressure integrated molded PFA elbow provided by this utility model includes an outer bend, a combined bend, and an anti-corrosion liner; the combined bend is coaxially installed inside the outer bend; the anti-corrosion liner covers the inner wall of the outer bend and wraps around the combined bend; a butt flange and a limiting flange are respectively provided at the two ends of the outer bend; a loose flange for snapping onto the limiting flange is movably installed on the outer bend; a limiting flange is integrally provided at both ends of the anti-corrosion liner; the two limiting flanges are respectively pressed tightly onto the butt flange and the limiting flange.

[0005] Furthermore, the combined bend is composed of multiple arc-shaped pieces; a snap-fit ​​strip is provided on one side edge of the arc-shaped piece, and a snap-fit ​​groove is provided on the opposite side edge; the snap-fit ​​strip of each arc-shaped piece snaps into the snap-fit ​​groove of the adjacent arc-shaped piece; multiple fixing strips are fixed at intervals and at an angle on the inner wall of the outer bend; a positioning strip is fixed on each arc-shaped piece; the edge of each positioning strip snaps into the fixing strip and the inner wall of the outer bend.

[0006] Furthermore, multiple limiting holes are provided on each arc-shaped piece, and the anti-corrosion lining penetrates through each limiting hole.

[0007] Furthermore, limit rings are fixed on the inner walls of both ends of the outer bend; the two limit rings are pressed tightly against the two end faces of the combined bend; the limit rings are wrapped with an anti-corrosion lining.

[0008] Compared with the prior art, the advantages of this utility model are as follows: The use of a combined bend can improve the structural strength of the anti-corrosion lining and the outer bend. Compared with traditional anti-corrosion pipes composed of steel pipes and linings, this utility model has higher structural strength, can withstand high pressure, and has a lower probability of deformation and breakage of the anti-corrosion lining and the outer bend; the anti-corrosion lining covers the inner wall of the outer bend and wraps the combined bend, enabling the anti-corrosion lining to provide chemical corrosion protection and high-temperature protection for both the outer bend and the combined bend; the use of a loose flange facilitates docking with the outer bend; and the use of a limiting flange allows for compression during installation and docking, ensuring a tight fit with the flange of the outer bend and achieving a good sealing effect, while also guaranteeing the structural strength of the two pipe openings of the anti-corrosion lining. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is an assembly drawing of the combined bent pipe of this utility model;

[0011] Figure 3 This is a partial cross-sectional view of the present invention;

[0012] In the diagram: 1. External bend; 2. Arc-shaped plate; 3. Corrosion-resistant lining; 4. Limiting ring; 5. Loose flange; 6. Limiting flange; 7. Limiting hole; 8. Positioning strip; 9. Snap-on strip; 10. Fixing strip; 11. Butt flange. Detailed Implementation

[0013] 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.

[0014] 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.

[0015] 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.

[0016] Example 1:

[0017] like Figure 1-3 As shown, the present invention provides a steel-reinforced ultra-high pressure integrated molded lined PFA elbow, comprising: an outer bend 1, a combined bend, and an anti-corrosion liner 3; the combined bend is coaxially installed inside the outer bend 1, and the anti-corrosion liner 3 covers the inner wall of the outer bend 1 and wraps around the combined bend; a butt flange 11 and a limiting flange are respectively provided at the two ends of the outer bend 1; a loose flange 5 for snapping onto the limiting flange is movably installed on the outer bend 1; a limiting flange 6 is integrally provided at both ends of the anti-corrosion liner 3; the two limiting flanges 6 are respectively pressed tightly onto the butt flange 11 and the limiting flange.

[0018] The use of a combined bend improves the structural strength of the anti-corrosion lining 3 and the outer bend 1. Compared with traditional anti-corrosion pipes composed of steel pipes and linings, this invention has higher structural strength, can withstand high pressure, and has a lower probability of deformation and breakage of the anti-corrosion lining 3 and the outer bend 1. The anti-corrosion lining 3 covers the inner wall of the outer bend 1 and wraps the combined bend, enabling the anti-corrosion lining 3 to provide chemical corrosion protection and high-temperature protection for the outer bend 1 and the combined bend. The loose flange 5 facilitates docking with the outer bend. The limiting flange 6 is squeezed during installation and docking, tightly fitting with the flange of the outer bend, achieving a good sealing effect, while ensuring the structural strength of the two pipe openings of the anti-corrosion lining 3.

[0019] Furthermore, the combined bend is composed of multiple arc-shaped pieces 2; a snap-fit ​​strip 9 is provided on one long side of the arc-shaped piece 2, and a snap-fit ​​groove is provided on the other long side; the snap-fit ​​strip 9 of each arc-shaped piece 2 is snapped into the snap-fit ​​groove of the adjacent arc-shaped piece 2; multiple fixing strips 10 parallel to the axis are fixed at intervals on the inner wall of the outer bend 1, and the edges of the fixing strips 10 are inclined towards the axis; a positioning strip 8 is fixed on each arc-shaped piece 2; the edges of each positioning strip 8 are snapped between each fixing strip 10 and the inner wall of the outer bend 1.

[0020] By utilizing the cooperation between the fixing strip 10 and the positioning strip 8, each arc-shaped piece 2 can be limited during installation and use, so that the combined bend is positioned axially and radially. At the same time, the positioning strip 8 can act as a reinforcing rib to improve the structural strength of the arc-shaped piece 2. The way the arc-shaped pieces 2 form the combined bend facilitates individual installation and position adjustment. After installation, the mating edges of every two arc-shaped pieces 2 can be fixed by welding to ensure the integrity of the combined bend and its structural strength.

[0021] Furthermore, multiple limiting holes 7 are provided on each arc-shaped piece 2, and the anti-corrosion liner 3 penetrates and fills each limiting hole 7. By using the anti-corrosion liner 3 to penetrate and fill each limiting hole 7, the bonding degree between the combined bend and the anti-corrosion liner 3 can be effectively improved. At the same time, when the anti-corrosion liner 3 is hot-pressed, it can be ensured that the anti-corrosion liner 3 can pass through the arc-shaped piece 2 and be hot-pressed to cover the inner wall of the outer bend 1, and fill the gap between the combined bend and the outer bend 1, thus ensuring its chemical corrosion protection and high temperature protection for both the combined bend and the outer bend 1.

[0022] Furthermore, limiting rings 4 are fixed on the inner walls of both openings of the outer bend 1; the two end faces of the combined bend are respectively pressed tightly against the inner end faces of the two limiting rings 4; the anti-corrosion lining 3 wraps around the limiting rings 4. The two limiting rings 4 are used to axially limit the combined bend, preventing the anti-corrosion lining 3 from axially displacing from the combined bend.

[0023] In the steel-reinforced ultra-high pressure integrated molded PFA elbow provided by this utility model, the anti-corrosion liner 3 is made of PFA plastic, which is fusible polytetrafluoroethylene. Its material properties give the anti-corrosion liner 3 excellent corrosion resistance and high temperature resistance.

[0024] 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 elbow, characterized in that: It includes an external bend (1), a combined bend, and an anti-corrosion liner (3); the combined bend is coaxially installed inside the external bend (1); the anti-corrosion liner (3) covers the inner wall of the external bend (1) and wraps the combined bend; a butt flange (11) and a limiting flange are respectively provided at the two pipe openings of the external bend (1); a loose flange (5) for snapping onto the limiting flange is movably installed on the external bend (1); a limiting flange (6) is integrally provided at both pipe openings of the anti-corrosion liner (3); the two limiting flanges (6) are respectively pressed tightly onto the butt flange (11) and the limiting flange.

2. The steel-reinforced ultra-high pressure integrated molded PFA elbow according to claim 1, characterized in that: The combined bend is composed of multiple arc-shaped pieces (2); a snap-fit ​​strip (9) is provided on one side edge of the arc-shaped piece (2), and a snap-fit ​​groove is provided on the opposite side edge; the snap-fit ​​strip (9) of each arc-shaped piece (2) is snapped into the snap-fit ​​groove of the adjacent arc-shaped piece (2); multiple fixing strips (10) are fixed at intervals on the inner wall of the outer bend (1); a positioning strip (8) is fixed on each arc-shaped piece (2); the edge of each positioning strip (8) is snapped between each fixing strip (10) and the inner wall of the outer bend (1).

3. The steel-reinforced ultra-high pressure integrated molded PFA elbow according to claim 2, characterized in that: Multiple limiting holes (7) are provided on each arc-shaped piece (2), and the anti-corrosion lining (3) passes through each limiting hole (7).

4. The steel-reinforced ultra-high pressure integrated molded PFA elbow according to claim 1, characterized in that: Limiting rings (4) are fixed on the inner walls of the two openings of the outer bend (1); the two limiting rings (4) are pressed tightly on the two end faces of the combined bend; the anti-corrosion lining (3) wraps the limiting rings (4).

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