A large-diameter flange for pipelines that can be quickly installed and disassembled

Abstract

This utility model belongs to the field of flanges, specifically relating to a large-diameter flange for pipelines that can be quickly disassembled and assembled. It includes two flanges, with a connecting seat between them. Locating pins are fixedly connected to both sides of the connecting seat, penetrating the flanges and slidingly connected to them. The outer walls of both flanges are jointly secured with clamp one and clamp two, which are hinged together. This utility model uses separate clamps, with clamp one and clamp two hinged together, and then provides a locking mechanism consisting of a locking rod, a U-shaped block, and a non-standard nut on each clamp. Thus, the flange connection can be completed simply by rotating the locking rod and tightening the non-standard nut, significantly improving efficiency compared to traditional bolt circumferential tightening.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, and in particular to a large-diameter flange for pipelines that can be quickly disassembled and assembled. Background Technology

[0002] In industrial pipeline systems such as petrochemicals, power, shipbuilding, and water supply, flange connection is one of the most common pipeline connection methods. Especially under large-diameter and high-pressure conditions, the reliability and disassembly efficiency of flanges directly affect the maintenance cost and safety of the system.

[0003] A search revealed a utility model patent with authorization announcement number CN205402063U, which discloses a large-diameter flange, including a first flange and a second flange. The first flange is fitted onto one end of a plastic pipe for docking and fixing with the plastic pipe, and the second flange is fitted onto one end of a metal pipe for docking and fixing with the metal pipe. Circular holes are evenly arranged around the periphery of the first and second flanges, and the first and second flanges are fixed together by using nuts and bolts passing through the circular holes.

[0004] However, existing flanges, especially large-diameter flanges, typically require many high-strength bolts for fastening. During installation, they must be tightened in a crisscrossing sequence, which is time-consuming and labor-intensive, and the same applies to disassembly. Therefore, improvements are needed. Utility Model Content

[0005] This invention provides a large-diameter flange for pipelines that can be quickly disassembled and assembled, solving the problem of inconvenient disassembly and assembly of existing large-diameter flanges.

[0006] To solve the above-mentioned technical problems, this utility model provides a large-diameter flange for pipelines that can be quickly disassembled and assembled, including two flanges. The two flanges are in contact with a connecting seat. Locating pins are fixedly connected to both sides of the connecting seat. The locating pins penetrate the flanges and are slidably connected to the flanges. The outer ring walls of the two flanges are jointly clamped with clamp one and clamp two. Clamp one and clamp two are hinged to each other. A U-shaped block is fixedly connected to the outer ring wall of clamp one. A locking rod is hinged to clamp two. The locking rod is slidably connected to the groove of the U-shaped block. A non-standard nut is threadedly connected to the upper section of the locking rod. The bottom of the non-standard nut abuts against the upper end of the U-shaped block.

[0007] Preferably, the number of locating pins is multiple, and the multiple locating pins are distributed in a circular array along the circumference of the connecting seat. The locating pins are inserted into the original bolt holes of the flange without changing the shape of the flange.

[0008] Preferably, sealing rings are embedded on both the left and right sides of the connecting seat, and the sealing rings abut against the flanges. The use of sealing rings increases the sealing performance between the connecting seat and the two flange contact surfaces.

[0009] Preferably, a knob is fixedly connected to the top of the locking rod, and the knob and the locking rod are an integral structure. The knob facilitates the rotation of the locking rod.

[0010] Preferably, the non-standard nut has a locking pin that slides inside, the locking pin being inserted into a U-shaped block, and a spring inside the non-standard nut. One end of the spring is fixedly connected to the locking pin, and the other end of the spring is fixedly connected to the inner surface of the non-standard nut. The locking pin will be inserted into the U-shaped block under the elastic force of the spring, thereby achieving the purpose of preventing the non-standard nut from loosening.

[0011] Preferably, a lever is fixedly connected to the pin body of the locking pin, the lever is slidably connected to a non-standard nut, and a limit block is fixedly connected to the end of the lever. The lever facilitates control of the engagement and disengagement of the locking pin and the U-shaped block.

[0012] Preferably, a sliding sleeve is slidably fitted onto the outer side of the lever body, a connecting strip is fixedly connected to the circumferential surface of the sliding sleeve, and a rubber retaining bead is fixedly connected to the end of the connecting strip. The rubber retaining bead engages with a non-standard nut. The sliding sleeve, connecting strip, and rubber retaining bead provide anti-loosening protection for the lever and locking pin.

[0013] Compared with related technologies, the large-diameter flange for pipelines that can be quickly disassembled and assembled provided by this utility model has the following advantages:

[0014] This utility model provides a large-diameter flange for pipelines that can be quickly disassembled and assembled. It uses split clamps, with clamp one and clamp two hinged to each other. Then, a locking mechanism consisting of a locking rod, a U-shaped block and a non-standard nut is set on the two clamps. In this way, the flange connection can be completed simply by rotating the locking rod and tightening the non-standard nut. Compared with the traditional bolt circumferential fastening method, the efficiency is greatly improved.

[0015] This utility model provides a large-diameter flange for pipelines that can be quickly disassembled and assembled. By setting a locking pin with elastic extension and retraction by a spring inside a non-standard nut, and the locking pin having a lever, the locking pin can be inserted into the U-shaped block from above to form a mechanical interlock. At the same time, combined with the elastic engagement of the rubber ball and the sliding sleeve, a double anti-loosening effect can be achieved, which can ensure the stability of the connection between the two clamps and further ensure the stability of the connection between the two flanges. Attached Figure Description

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This utility model Figure 1 3D schematic diagram of local structure Figure 1 ;

[0018] Figure 3 This utility model Figure 1 3D schematic diagram of local structure Figure 2 ;

[0019] Figure 4 This utility model Figure 1 Side sectional view;

[0020] Figure 5 This utility model Figure 1 A front sectional view;

[0021] Figure 6 This utility model Figure 5 Enlarged view of point A.

[0022] In the diagram: 1. Flange; 2. Connecting seat; 3. Locating pin; 4. Sealing ring; 5. Clamp one; 6. Clamp two; 7. U-block; 8. Locking rod; 9. Non-standard nut; 10. Knob; 11. Locking pin; 12. Spring; 13. Lever; 14. Limit block; 15. Sliding sleeve; 16. Connecting strip; 17. Rubber ball. Detailed Implementation

[0023] Please see Figure 1 , Figure 2 , Figure 4 A large-diameter, quick-assembly flange for pipelines includes two flanges 1, with a connecting seat 2 in contact between them. Locating pins 3 are fixedly connected to both sides of the connecting seat 2. The locating pins 3 penetrate the flanges 1 and are slidably connected to them. Multiple locating pins 3 are arranged in a circular array along the circumference of the connecting seat 2. The locating pins 3 are inserted into the original bolt holes of the flanges 1 without altering their shape. Sealing rings 4 are embedded on both sides of the connecting seat 2, abutting against the flanges 1. The sealing rings 4 enhance the sealing performance of the contact surfaces between the connecting seat 2 and the two flanges 1.

[0024] Please see Figure 1 , Figure 3 , Figure 4 , Figure 5The outer ring walls of the two flanges 1 are jointly secured with clamp 5 and clamp 6, which are hinged together. A U-shaped block 7 is fixedly connected to the outer ring wall of clamp 5. A locking rod 8 is hinged to clamp 6, and the locking rod 8 is slidably connected to the groove of the U-shaped block 7. A non-standard nut 9 is threadedly connected to the upper section of the locking rod 8, and the bottom of the non-standard nut 9 abuts against the upper end of the U-shaped block 7. A knob 10 is fixedly connected to the top of the locking rod 8, and the knob 10 and the locking rod 8 are an integral structure. The knob 10 facilitates the rotation of the locking rod 8.

[0025] Please see Figure 5 , Figure 6 The non-standard nut 9 has a sliding locking pin 11 inside, which is inserted into the U-shaped block 7. A spring 12 is installed inside the non-standard nut 9; one end of the spring 12 is fixedly connected to the locking pin 11, and the other end is fixedly connected to the inner surface of the non-standard nut 9. The locking pin 11 inserts into the U-shaped block 7 under the elastic force of the spring 12, thus preventing the non-standard nut 9 from loosening. A lever 13 is fixedly connected to the pin body of the locking pin 11, and the lever 13 is slidably connected to the non-standard nut 9. A limit block 14 is fixedly connected to the end of the lever 13. The lever 13 facilitates the control of the engagement and disengagement of the locking pin 11 and the U-shaped block 7. A sliding sleeve 15 is slidably sleeved on the outer side of the lever 13. A connecting strip 16 is fixedly connected to the circumference of the sliding sleeve 15, and a rubber bead 17 is fixedly connected to the end of the connecting strip 16, which engages with the non-standard nut 9. The sliding sleeve 15, connecting strip 16, and rubber ball 17 provide anti-loosening protection for the lever 13 and locking pin 11.

[0026] Working principle: First, align the two flanges 1 end faces and place them on the left and right sides of the connecting seat 2. At the same time, insert the positioning pin 3 of the connecting seat 2 into the original bolt holes of the flange 1. At this time, the sealing ring 4 on the flange 1 and the connecting seat 2 will be in contact. Then, rotate the clamp 5 and clamp 6 along the hinge axis to close them and wrap around the outer ring of the flange 1. Then, rotate the locking rod 8 by the knob 10 so that the locking rod 8 rotates into the groove of the U-shaped block 7. Then, tighten the non-standard nut 9 to press the U-shaped block 7. Finally, control the locking pin 11 by the lever 13 so that it is inserted into the U-shaped block 7 from above. At the same time, insert the rubber ball 17 on the lever 13 into the corresponding slot on the non-standard nut 9.

Claims

1. A large-diameter flange for pipelines that can be quickly disassembled and assembled, comprising two flanges (1), characterized in that: A connecting seat (2) is in common contact between the two flanges (1). A positioning pin (3) is fixedly connected to both the left and right sides of the connecting seat (2). The positioning pin (3) passes through the flange (1) and is slidably connected to the flange (1). A clamp first (5) and a clamp second (6) are clamped together on the outer ring wall of the two flanges (1). The clamp first (5) and the clamp second (6) are hinged to each other. A U-shaped block (7) is fixedly connected to the outer ring wall of the clamp first (5). A locking rod (8) is hinged on the clamp second (6). The locking rod (8) is slidably connected to the groove of the U-shaped block (7). A non-standard nut (9) is threadedly connected to the upper part of the locking rod (8). The bottom of the non-standard nut (9) abuts against the upper end of the U-shaped block (7).

2. The large-diameter flange for pipelines that can be quickly disassembled and assembled according to claim 1, characterized in that: The number of positioning pins (3) is set to multiple, and the multiple positioning pins (3) are distributed in a ring array along the circumferential surface of the connecting seat (2).

3. A large-diameter flange for pipelines that can be quickly disassembled and assembled according to claim 1, characterized in that: Sealing rings (4) are embedded on both the left and right sides of the connecting seat (2), and the sealing rings (4) abut against the flange (1).

4. A large-diameter flange for pipelines that can be quickly disassembled and assembled according to claim 1, characterized in that: A knob (10) is fixedly connected to the top of the locking rod (8), and the knob (10) and the locking rod (8) are an integral structure.

5. A large-diameter flange for pipelines that can be quickly disassembled and assembled according to claim 1, characterized in that: The non-standard nut (9) has a sliding connection of a locking pin (11), which is inserted into a U-shaped block (7). The non-standard nut (9) has a spring (12) inside, one end of which is fixedly connected to the locking pin (11), and the other end of which is fixedly connected to the inner surface of the non-standard nut (9).

6. A large-diameter flange for pipelines that can be quickly disassembled and assembled according to claim 5, characterized in that: A lever (13) is fixedly connected to the pin body of the locking pin (11). The lever (13) is slidably connected to the non-standard nut (9). A limit block (14) is fixedly connected to the end of the lever (13).

7. A large-diameter flange for pipelines that can be quickly disassembled and assembled according to claim 6, characterized in that: The lever (13) has a sliding sleeve (15) slidably sleeved on the outside of the lever body. A connecting strip (16) is fixedly connected to the circumferential surface of the sliding sleeve (15). A rubber bead (17) is fixedly connected to the end of the connecting strip (16). The rubber bead (17) is engaged with a non-standard nut (9).

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