High-strength high-sealing butt welding flange

Abstract

The utility model discloses a high-strength high-sealing butt welding flange which comprises a first flange, a second flange, first screw holes, a sealing washer, a connecting groove, second screw holes, a connecting protrusion and a locking assembly, the second flange is arranged on one side of the first flange, the first screw holes are formed in the first flange, the sealing washer is arranged above the first screw holes, and the connecting protrusion is arranged above the second screw holes. A first screw hole is formed in the first flange, a bolt is arranged in the first screw hole, a connecting groove is formed in the end of the first flange, a particle coating is arranged on the inner wall of the connecting groove, a second screw hole corresponding to the first flange is formed in the second flange, and a locking assembly is clamped at the joint of the first flange and the second flange. The butt welding flange is provided with the inner wall which is in transition from thick to thin, the butt welding flange can gradually adapt to the wall thickness change of a pipeline when the pipeline is connected, the sealing performance and the anti-seismic performance of the flange are improved through the arranged sealing washer, meanwhile, the connecting groove and the connecting protrusion are arranged, connection between the flanges is reinforced, and the connecting effect is good. And the strength and the sealing performance of the welding neck flange are better improved.

Description

Technical Field

[0001] The utility model belongs to the technical direction of butt-welding flanges, and specifically relates to a high-strength and high-sealing butt-welding flange. Background Art

[0002] Butt welding flanges are widely used in many industries. In the petrochemical industry, they are often used for pipeline connections, especially for high-pressure, high-temperature, and highly corrosive media transmission pipelines; in the shipbuilding industry, as a connection method for connecting pipelines and valves, they can ensure the strength and sealing of the pipeline system. The main features of butt welding flanges include not easy to deform, high pressure and high temperature resistance, low installation difficulty, high connection strength, and long service life.

[0003] However, most of the butt-weld flanges currently produced have the problem of stress discontinuity due to their internal structure. With the continuous development of science and technology, the connection requirements for pipelines are becoming higher and higher, and the requirements for the strength and sealing effect of butt-weld flanges are also higher. This phenomenon has become a problem that needs to be urgently solved by people in this field. Utility Model Content

[0004] The utility model aims to provide a high-strength and high-sealing butt-welding flange for existing devices to solve the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions: a high-strength and high-sealing butt-welding flange, comprising a first flange, a second flange is arranged on one side of the first flange, first screw holes are evenly arranged on the end surface of the first flange, a sealing gasket is arranged on one side of the first screw hole, and a bolt is passed through the first screw hole;

[0006] A symmetrical connecting groove is provided on the end surface of the first flange, a particle coating is provided on the inner wall of the connecting groove, a second screw hole is provided on the end surface of the second flange, a symmetrical connecting protrusion is provided on the end surface of the second flange, and a locking assembly is provided on the outer side of the second flange.

[0007] The utility model further illustrates that the inner wall of the first flange is a slope structure.

[0008] The utility model further describes that the end surface of the first flange is in contact with the end surface of the second flange.

[0009] The utility model further illustrates that the first screw hole corresponds to the second screw hole one by one, a bolt is connected to the inner thread of the first screw hole, and a bolt is connected to the inner thread of the second screw hole.

[0010] The utility model further illustrates that the connection groove corresponds to the connection protrusion, a particle coating is glued on the inner wall of the connection groove, and the connection protrusion is frictionally connected inside the connection groove.

[0011] The utility model further describes that the locking assembly includes a connecting plate, a telescopic spring, and a positioning plate. A connecting plate is arranged on the outer side of the first flange, telescopic springs are arranged on the inner walls on both sides of the connecting plate, and positioning plates are arranged on the ends of the telescopic springs.

[0012] The utility model further describes that a positioning plate is arranged above the end surface of the first flange.

[0013] Compared with the prior art, the beneficial effects achieved by the utility model are: the utility model,

[0014] (1) The sealing gasket is provided to enhance the sealing and seismic resistance of the flange. At the same time, the inner wall structure of the butt-welded flange from thick to thin is combined to improve the stress discontinuity, thereby increasing the overall strength and rigidity of the flange and improving the overall bearing capacity of the flange.

[0015] (2) By providing a locking assembly, the sealing between the butt-welding flanges is enhanced, the installation of the butt-welding flanges is facilitated, and the work efficiency is improved. In addition, the locking assembly has a simple structure and is convenient and quick to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 It is a cross-sectional view of the first flange of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the second flange of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the locking assembly of the utility model;

[0021] In the figure: 1. first flange; 2. second flange; 3. first screw hole; 4. sealing gasket; 5. bolt; 6. connecting groove; 7. particle coating; 8. second screw hole; 9. connecting protrusion; 10. locking assembly; 101. connecting plate; 102. telescopic spring; 103. positioning plate. DETAILED DESCRIPTION

[0022] The following is a further non-limiting detailed description of the technical solution of the utility model in conjunction with the preferred embodiments and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a high-strength and high-sealing butt-welding flange, comprising a first flange 1, characterized in that: a second flange 2 is connected to one side of the first flange 1, first screw holes 3 are evenly opened on the end surface of the first flange 1, a sealing gasket 4 is installed on one side of the first screw hole 3, and a bolt 5 is passed through the first screw hole 3;

[0024] A symmetrical connecting groove 6 is opened on the end face of the first flange 1, and a particle coating 7 is fixed on the inner wall of the connecting groove 6. A second screw hole 8 is opened on the end face of the second flange 2, and symmetrical connecting protrusions 9 are welded on the end face of the second flange 2. A locking assembly 10 is fixed on the outer side of the second flange 2.

[0025] A positioning plate 103 is disposed above the end surface of the first flange 1 , and a firm fit between the first flange 1 and the second flange 2 is achieved through the connection between the positioning plate 103 and the end surface of the first flange 1 .

[0026] The locking assembly 10 includes a connecting plate 101, a telescopic spring 102, and a positioning plate 103. The connecting plate 101 is arranged on the outer side of the first flange 1, and the telescopic springs 102 are arranged on the inner walls on both sides of the connecting plate 101. The positioning plates 103 are arranged at the ends of the telescopic springs 102. After one end of the connecting plate 101 is pressed against the upper end surface of the first flange 1, the upper end of the connecting plate 101 is pressed, so that the telescopic spring 102 contracts and clamps the second flange 2 into the upper part of the positioning plate 103 below, thereby realizing a firm connection between the first flange 1 and the second flange 2.

[0027] The connecting groove 6 corresponds to the connecting protrusion 9, and a particle coating 7 is glued on the inner wall of the connecting groove 6. The connecting protrusion 9 is frictionally connected inside the connecting groove 6. The connection is achieved by inserting the connecting protrusion 9 into the connecting groove 6. A connection method similar to the tongue and groove type is adopted, which further improves the sealing between the first flange 1 and the second flange 2.

[0028] The first screw hole 3 corresponds to the second screw hole 8 one by one. The first screw hole 3 is internally threaded with a bolt 5 , and the second screw hole 8 is internally threaded with a bolt 5 . The bolt 5 is inserted to realize the basic connection between the first flange 1 and the second flange 2 .

[0029] The end surface of the first flange 1 is in contact with the end surface of the second flange 2, thereby forming a sealing barrier between the flange end surfaces to effectively prevent leakage of the medium.

[0030] The inner wall of the first flange 1 is a sloped structure, and after the pipeline is connected to the first flange 1, the problems of stress concentration and leakage are avoided.

[0031] Working principle: connect the connecting ends of the first flange 1 and the second flange 2 to the pipeline, and then align the connecting groove 6 with the connecting protrusion 9 to make a preliminary connection between the first flange 1 and the second flange 2. At this time, clamp the locking assembly 10 to the connection between the first flange 1 and the second flange 2, so that the first flange 1 and the second flange 2 fit tightly, and then insert the bolt 5 into the first screw hole 3 and the second screw hole 8. The multi-layer connection makes the butt-welding flange have higher strength and sealing, and the anti-seismic performance of the butt-welding flange is improved by the sealing gasket 4.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them. Although the utility model is described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. A high-strength and high-seal butt-welding flange, comprising a first flange (1), characterized in that: A second flange (2) is provided on one side of the first flange (1); first screw holes (3) are evenly arranged on the end surface of the first flange (1); a sealing gasket (4) is provided on one side of the first screw hole (3); and a bolt (5) is inserted into the first screw hole (3); A symmetrical connecting groove (6) is provided on the end surface of the first flange (1), a particle coating (7) is provided on the inner wall of the connecting groove (6), a second screw hole (8) is provided on the end surface of the second flange (2), a symmetrical connecting protrusion (9) is provided on the end surface of the second flange (2), and a locking assembly (10) is provided on the outer side of the second flange (2).

2. A high-strength and high-seal butt-welding flange according to claim 1, characterized in that: The inner wall of the first flange (1) is a sloped structure.

3. The high-strength and high-seal butt-welding flange according to claim 1 is characterized in that: The end surface of the first flange (1) is in contact with the end surface of the second flange (2).

4. The high-strength and high-seal butt-welding flange according to claim 1, characterized in that: The first screw hole (3) corresponds to the second screw hole (8) in a one-to-one manner; the first screw hole (3) is internally threadedly connected to a bolt (5); and the second screw hole (8) is internally threadedly connected to a bolt (5).

5. The high-strength and high-seal butt-welding flange according to claim 1 is characterized in that: The connection groove (6) corresponds to the connection protrusion (9), a particle coating (7) is glued onto the inner wall of the connection groove (6), and the connection protrusion (9) is frictionally connected inside the connection groove (6).

6. The high-strength and high-seal butt-welding flange according to claim 1, characterized in that: The locking assembly (10) comprises a connecting plate (101), a telescopic spring (102), and a positioning plate (103); the connecting plate (101) is arranged on the outer side of the first flange (1); the telescopic springs (102) are arranged on the inner walls on both sides of the connecting plate (101); and the positioning plates (103) are arranged at the ends of the telescopic springs (102).

7. The high-strength and high-seal butt-welding flange according to claim 6, characterized in that: A positioning plate (103) is arranged above the end surface of the first flange (1).

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