CN110725948A

CN110725948A - Flexible self-sealing self-tightening flange

Info

Publication number: CN110725948A
Application number: CN201911033299.XA
Authority: CN
Inventors: 张小立; 段佳玮; 郭颖; 王熠柔; 张付峰
Original assignee: Zhongyuan University of Technology
Current assignee: Zhongyuan University of Technology
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-01-24

Abstract

The invention provides a flexible self-sealing self-tightening flange which comprises a hoop and sockets, wherein the hoop clamps the sockets, sealing rings are arranged between the sockets, and the sealing rings and the sockets are in streamline coupling. The invention uses the flexible design method of streamline coupling, when the flange connecting part is under the fluid pressure, the flange connecting part is not easy to damage and lose efficacy, the flexible seal is gradually fastened, the pressure is more and more fastened, and the part failure or deformation can not occur due to the streamline design. In addition, the screw rod sheath design is adopted at the connecting position of the two parts of the flange, and the flange can be manually unscrewed when maintenance is needed, so that the flange is very convenient.

Description

Flexible self-sealing self-tightening flange

Technical Field

The invention relates to the field of flange preparation, in particular to a flexible self-sealing self-tightening flange.

Background

Container seals can be divided into strong side seals and self-tightening seals by principle. The strong side sealing is realized by pulling the bolt tightly, pressing the gasket tightly and filling and plugging the micro gap of the sealing surface by depending on the plasticity of the gasket; the self-tightening sealing is mainly realized by pressing the sealing element by the operating pressure of the container so as to seal the joint.

The high-pressure self-tightening flange is a novel high-pressure flange which is more beneficial to pipeline connection under severe working conditions such as high pressure, high temperature, high corrosion and the like. The traditional high-pressure flange consists of a pair of flanges, a flange gasket and a plurality of bolts and nuts. The flange gasket is arranged between the two flanges, and after the nut is screwed down, the pressure on the surface of the sealing gasket reaches a certain value, the sealing gasket is subjected to plastic deformation, so that the joint is sealed and does not leak. The traditional flange is sealed by plastic deformation of a sealing gasket, and belongs to soft sealing. The core of the high-pressure self-tightening flange is a unique novel seal, namely, the seal is formed by means of elastic deformation of a sealing lip (T-shaped arm) of a sealing ring, and the high-pressure self-tightening flange belongs to a hard seal. The combination of the sleeve joint, the cutting sleeve and the sealing ring forms a strong rigid body, so that the strength of the connecting part is far greater than the strength of the pipe parent metal. When the pressure is applied, the ribs and the lips respectively play roles in strength and sealing, so that the self-tightening sealing can be realized, the pipeline can be reinforced, the overall strength of the connecting part is greatly enhanced, and the method is an epoch-making progress in the field.

However, the existing self-tightening flange seal principle is that the elastic deformation of the T-shaped arm forms a seal (fig. 6), which belongs to a hard seal, and when pressed, the T-shape is forced forward to form a seal. The T-arm seal is a vulnerable component during repeated pressure relief, load cycles. And the existing self-tightening flange can be dismantled only by means of a special tool, so that the disposal of some emergency situations is not facilitated.

Disclosure of Invention

The invention provides a flexible self-sealing self-tightening flange, which adopts a self-tightening design method that flexibility can bear any pressure, and the sealing is tighter, and flexible sealing parts are not easy to damage; the higher the pressure, the tighter the seal; is a self-tightening flange which can be manually disassembled.

The technical scheme for realizing the invention is as follows:

the utility model provides a flexible self sealss are from tight flange, includes clamp and socket, the clamp presss from both sides tight socket, is equipped with the sealing ring between the socket, adopt streamlined coupling's mode between sealing ring and the socket.

The clamp utilizes the bolt fastening, is equipped with gasket I and gasket II between bolt and the clamp, and the bolt adopts fastener and nut to fix.

The invention has the beneficial effects that: the invention uses the flexible design method of streamline coupling, when the flange connecting part is under the fluid pressure, the flange connecting part is not easy to damage and lose efficacy, the flexible seal is gradually fastened, the pressure is more and more fastened, and the part failure or deformation can not occur due to the streamline design. In addition, the screw rod sheath design is adopted at the connecting position of the two parts of the flange, and the flange can be manually unscrewed when maintenance is needed, so that the flange is easy and convenient to disassemble.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view A-A;

FIG. 3 is view B;

FIG. 4 is a schematic view of a seal ring structure;

FIG. 5 is a schematic view of a gasket construction;

fig. 6 is a conventional seal ring design.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments of the present invention, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.

As shown in figure 2, the flexible self-sealing self-tightening flange comprises a clamp 4 and a socket 2, wherein the clamp 4 clamps the socket 2, a sealing ring 3 is arranged between the sockets 2, and a streamline coupling mode is adopted between the sealing ring 3 and the sockets 2.

The sealing ring 3 adopts a flexible design method of streamline coupling (figure 4), when the flange connecting part is subjected to fluid pressure, the flexibility is tight, namely the trapezoid part 3-1 is gradually sealed and fastened, the pressure is fastened more and more, and due to the streamline design, part failure or deformation cannot occur.

The clamp 4 is fixed by the bolt 1 (figure 1), a gasket I5 and a gasket II 7 (figures 5 and 3) are arranged between the bolt 1 and the clamp 4, and the bolt 1 is fixed by a fastener 8 and a nut 6.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a flexible self sealss flange from sealing, includes clamp (4) and socket (2), its characterized in that: the clamp (4) clamps the sockets (2), a sealing ring (3) is arranged between the sockets (2), and a streamline coupling mode is adopted between the sealing ring (3) and the sockets (2).

2. A flexible self-sealing self-tightening flange according to claim 1, wherein: the clamp (4) is fixed by the bolt (1), a gasket I (5) and a gasket II (7) are arranged between the bolt (1) and the clamp (4), and the bolt (1) is fixed by the fastener (8) and the nut (6).