Butt welding flange

Abstract

The utility model discloses a welding neck flange, and relates to the technical field of flanges. Comprising a flange body and a connecting neck pipe, the flange body and the connecting neck pipe are attached to each other, a plurality of interior angle bolts are embedded into one side of the outer wall of the flange body along the circumferential surface at equal intervals in a sliding mode, one ends of the outer walls of the interior angle bolts are embedded into the connecting neck pipe in a threaded mode, and the outer wall of the connecting neck pipe extends to form an extension ring; a plurality of external angle bolts are embedded into one side of the outer wall of the extension ring along the circumferential surface in an equidistant sliding mode, and one end of the outer wall of each external angle bolt is embedded into the flange body in a threaded mode. By means of the connecting neck pipe, the inner angle bolt, the extension ring and the outer angle bolt, the flange body and the connecting neck pipe can be connected and separated, rotation of the inner angle bolt is limited through the limiting block, connection of the flange body and the connecting neck pipe is prevented from loosening, the overall performance of the flange is improved, and the application range of the flange is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flange technical field, concretely is a butt joint flange. BACKGROUND

[0002] The butt joint flan, also called high neck flan, is a special flange connecting piece, which is different from other flanges in that there is a long and inclined high neck from the welding position of the flange and the pipe to the flange plate. The wall thickness of this high neck gradually transitions to the pipe wall thickness along the height direction, thereby improving the discontinuity of stress and increasing the flange strength.

[0003] The high neck part of the current butt joint flange is integrated with the flange, and cannot be separated from the flange body. The high neck part of different materials and structures has different effects on pipe connection, and the entire flange needs to be replaced, resulting in lack of overall performance and application range of the butt joint flange. SUMMARY

[0004] The utility model provides a butt joint flange, through connecting neck pipe, inner angle bolt, extension ring and outer angle bolt, can make the connection of flange body and connecting neck pipe part and separate, and utilize the restriction piece to limit the rotation of inner angle bolt, prevent the connection of flange body and connecting neck pipe from being loose, strengthen the overall performance and application range of flange.

[0005] To achieve the above purpose, the utility model realizes the following technical scheme: a butt joint flange, comprising:

[0006] The flange body and the connecting neck pipe are mutually attached. A plurality of inner angle bolts are slidably embedded on the outer wall of the flange body at equal distances along the circumferential surface. The outer ends of the plurality of inner angle bolts are threadedly embedded on the connecting neck pipe. An extension ring is provided on the outer wall of the connecting neck pipe. A plurality of outer angle bolts are slidably embedded on the outer wall of the extension ring at equal distances along the circumferential surface. The outer ends of the plurality of outer angle bolts are threadedly embedded on the flange body.

[0007] As a butt joint flange of the utility model, a plurality of flange holes are slidably embedded on the outer wall of the flange body along the circumferential surface at equal distances.

[0008] As a butt joint flange of the utility model, a main sealing ring is slidably embedded on one side of the flange body.

[0009] As a butt joint flange of the utility model, a plurality of restriction pieces are provided on the outer wall of the main sealing ring at equal distances along the circumferential surface on both sides. The outer walls of the plurality of restriction pieces are respectively slidably embedded in the plurality of inner angle bolts.

[0010] The utility model provides a butt welding flange, the flange body and the connecting neck pipe are slidingly embedded with the auxiliary sealing ring.

[0011] The utility model provides a butt welding flange.

[0012] (1) the butt welding flange, through connecting neck pipe, inner angle bolt, extension ring and outer angle bolt, can make the connection and separation of flange body and connecting neck pipe part, and utilize the limit block to limit the rotation of inner angle bolt, prevent the connection of flange body and connecting neck pipe from producing the loosening, has strengthened the overall performance and application scope of flange. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the front view of the utility model;

[0014] Fig. 2 It is the sectional view of the utility model;

[0015] Fig. 3 It is the explosion drawing of the utility model.

[0016] In the drawing: 1, flange body;2, connecting neck pipe;3, inner angle bolt;4, extension ring;5, outer angle bolt;6, flange hole;7, main sealing ring;8, limit block;9, auxiliary sealing ring. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiment will be described clearly and completely below in combination with the drawings in the embodiment. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0018] Please refer to Figs. 1-3 The utility model provides a technical scheme: a butt welding flange, comprising:

[0019] The flange body 1 and the connecting neck pipe 2 are mutually adhered, a plurality of inner angle bolts 3 are slidably embedded on the outer wall of the flange body 1 at equal distances along the circumferential surface, the outer wall of the connecting neck pipe 2 is provided with an extension ring 4, a plurality of outer angle bolts 5 are slidably embedded on the outer wall of the extension ring 4 at equal distances along the circumferential surface, and the outer wall of the extension ring 4 is provided with an extension ring 4.

[0020] In the embodiment, the inner corner bolts 3 can make the one side of the connecting neck pipe 2 closely adhere to the flange body 1, and the extension ring 4 extended from the connecting neck pipe 2 is fixed to the flange body 1 by the outer corner bolts 5, so as to enhance the connection and fixation of the flange body 1 and the connecting neck pipe 2.

[0021] Specifically, the outer wall of the flange body 1 is slidably embedded with the plurality of flange holes 6 along the circumferential surface at equal distances.

[0022] In the embodiment, the flange holes 6 can be connected and fixed with other flanges.

[0023] Specifically, the flange body 1 is slidably embedded with the main sealing ring 7 on one side of the plurality of inner corner bolts 3.

[0024] In the embodiment, the main sealing ring 7 can increase the sealing property of the connection of the flange body 1.

[0025] Specifically, the outer wall of the main sealing ring 7 is extended with the plurality of limiting blocks 8 at equal distances along the circumferential surface on both sides, and the outer wall of the plurality of limiting blocks 8 is slidably embedded in the plurality of inner corner bolts 3.

[0026] In the embodiment, the limiting blocks 8 can prevent the rotation of the inner corner bolts 3 and avoid the loosening of the connection of the flange body 1 and the connecting neck pipe 2.

[0027] Specifically, the flange body 1 and the connecting neck pipe 2 are slidably embedded with the secondary sealing ring 9.

[0028] In the embodiment, the secondary sealing ring 9 can increase the sealing property of the connection between the flange body 1 and the connecting neck pipe 2.

[0029] In use, the inner corner bolts 3 can make the one side of the connecting neck pipe 2 closely adhere to the flange body 1, and the extension ring 4 extended from the connecting neck pipe 2 is fixed to the flange body 1 by the outer corner bolts 5, so as to enhance the connection and fixation of the flange body 1 and the connecting neck pipe 2, the flange holes 6 can be connected and fixed with other flanges, the main sealing ring 7 can increase the sealing property of the connection of the flange body 1, the limiting blocks 8 can prevent the rotation of the inner corner bolts 3 and avoid the loosening of the connection of the flange body 1 and the connecting neck pipe 2, the secondary sealing ring 9 can increase the sealing property of the connection between the flange body 1 and the connecting neck pipe 2, the flange body 1 and the connecting neck pipe 2 can be connected and separated, and the limiting blocks 8 can limit the rotation of the inner corner bolts 3, prevent the loosening of the connection of the flange body 1 and the connecting neck pipe 2, and enhance the overall performance and application range of the flange.

[0030] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A butt welded flange, characterized in that, Include: Flange body (1) and connecting neck pipe (2), the flange body (1) and connecting neck pipe (2) are mutually pasted, the outer wall one side of the flange body (1) is slidably embedded with a plurality of inner angle bolts (3) along the circumferential surface equidistantly, the outer wall one end of a plurality of the inner angle bolts (3) is threadedly embedded on the connecting neck pipe (2), the outer wall of the connecting neck pipe (2) is extended with extension ring (4), the outer wall one side of the extension ring (4) is slidably embedded with a plurality of outer angle bolts (5) along the circumferential surface equidistantly, the outer wall one end of a plurality of the outer angle bolts (5) is threadedly embedded on the flange body (1).

2. A butt welded flange according to claim 1, characterised in that: The outer wall of the flange body (1) is slidably embedded with a plurality of flange holes (6) along the circumferential surface equidistantly.

3. A butt welded flange according to claim 2, characterised in that: The flange body (1) is slidably embedded with main sealing ring (7) on one side of a plurality of inner angle bolts (3).

4. A butt welded flange according to claim 3, characterised in that: The outer wall of the main sealing ring (7) is slidably embedded with a plurality of limiting blocks (8) along the circumferential surface equidistantly on both sides, the outer wall of a plurality of the limiting blocks (8) is respectively slidably embedded in a plurality of inner angle bolts (3).

5. A butt welded flange according to claim 4, characterised in that: The flange body (1) and connecting neck pipe (2) are slidably embedded with secondary sealing ring (9).

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