CN210566850U

CN210566850U - Sealing flange connecting piece of natural gas transportation pipeline

Info

Publication number: CN210566850U
Application number: CN201921525068.6U
Authority: CN
Inventors: 王建东
Original assignee: Deyang Ruichen Pipe Industry Co ltd
Current assignee: Deyang Ruichen Pipe Industry Co ltd
Priority date: 2019-09-16
Filing date: 2019-09-16
Publication date: 2020-05-19
Anticipated expiration: 2029-09-16

Abstract

The utility model discloses a natural gas transportation pipeline's sealed flange joint spare, including first flange and second flange. The natural gas pipeline is clamped and fixed between the connecting cylinder and the inner ring, so that a worker can conveniently install the flange, the limiting plate on the inner ring not only has a fixing effect on the connecting cylinder, but also has a limiting effect on the natural gas transportation pipeline, and the protection pad arranged between the connecting cylinder and the natural gas pipeline can not only enhance the stabilizing effect of the connecting cylinder, but also prevent the natural gas in the pipeline from leaking from a gap between the connecting cylinder and the pipeline; the telescopic spring is arranged between the inner ring and the outer ring, so that the diameter of the inner ring can be changed, the flange can be more conveniently installed with workers, and resource waste caused by overlarge errors of the flange or a pipeline is avoided; the sealing plate arranged on the inner side of the flange inner ring can fill and plug a gap between the natural gas pipeline and the inner ring, and the sealing effect of the pipeline joint is ensured.

Description

Sealing flange connecting piece of natural gas transportation pipeline

Technical Field

The utility model belongs to the technical field of natural gas transportation pipeline connecting piece, particularly, relate to a natural gas transportation pipeline's sealed flange connecting piece.

Background

The flange connection is the most common connection form in petrochemical equipment and natural gas transportation pipeline, and the equipment pipeline is numerous, and flange joint is countless, and these connect in case the emergence is leaked, not only wasting resources, polluted environment, serious still can take place the combustion and explosion, cause the casualties, bring huge loss for the enterprise. Therefore, the sealing performance of the flange joint is always a key factor influencing the long-period safe operation of natural gas transportation and chemical production.

The typical structure of flange connection is by upper and lower flange, seal gasket, bolt and nut constitution, and pipeline flange connection is mainly through the effect of external force between seal gasket and the flange seal face, makes its inseparable laminating, reaches the effect of avoiding taking place to leak.

The existing sealing flange connecting piece for natural gas pipeline transportation has a plurality of defects:

1. the structure is complex, the installation is complicated, and the replacement and maintenance are not facilitated;

2. the existing flange is of a fixed size, errors exist in the size of the flange in actual production regardless of flange machining or natural gas transportation pipeline production, the error values are met, the use effect of the flange can be influenced, the flange can not be installed, or the flange is installed forcibly, and natural gas leakage is caused due to the fact that the joint is not sealed.

Therefore in order to solve the above problem, the utility model provides a natural gas transportation pipeline's sealed flange joint spare.

An effective solution to the problems in the related art has not been proposed yet.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a natural gas transportation pipeline's sealed flange joint spare to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing flange connecting piece of a natural gas transportation pipeline comprises a first flange and a second flange, wherein a first outer ring is arranged on one side of the first flange, a sealing ring is fixedly arranged at one end of the first outer ring, an expansion spring is fixedly arranged at the inner side of the first outer ring, one end of the extension spring is fixedly provided with a first inner ring, the inner side of the first inner ring is fixedly provided with a sealing plate, a limiting seat is fixedly arranged on the inner side of one end of the first inner ring, a first connecting cylinder is fixedly arranged at one end of the limiting seat, a gasket is fixedly arranged on the outer side of one end of the first connecting cylinder, a mounting seat is fixedly arranged at the top end of the first outer ring, the top fixed mounting of mount pad has the connecting block, the top fixed mounting of connecting block has first fixed plate, the one end of first fixed plate passes through threaded connection fixed mounting has fixing bolt.

Furthermore, one end of the second flange is provided with a second outer ring, a second inner ring is arranged in the second outer ring, the connection mode of the second inner ring and the second outer ring is the same as that of the first outer ring and the first inner ring, a second connecting cylinder is installed at one end of the second outer ring, a fixing rod is fixedly installed on the outer wall of the second outer ring, a second fixing plate is fixedly installed at one end of the fixing rod, and a through hole is formed in the second fixing plate.

Furthermore, the mounting seat, the connecting block and the first fixing plate are provided with two groups and are symmetrically distributed at the circle center of the first flange.

Furthermore, two groups of fixing rods and two groups of second fixing plates are arranged and are symmetrically distributed at the circle center of the second flange.

Furthermore, a natural gas transportation pipe is fixedly arranged between the first inner ring and the first connecting cylinder in a clamping mode.

Furthermore, the first fixing plate and the second fixing plate are located at corresponding positions, and the fixing bolt fixedly connects the first fixing plate and the second fixing plate through the through hole.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the natural gas pipeline block is fixed between connecting cylinder and inner circle, can be convenient for the staff to the installation of flange, and the limiting plate that circles in simultaneously is not only to play the fixed action to the connecting cylinder, still plays a limiting displacement to the natural gas transportation pipeline simultaneously, installs a protection pad between connecting cylinder and natural gas pipeline and not only can strengthen the stable effect of connecting cylinder, can prevent that the natural gas in the pipeline from leaking from the gap between connecting cylinder and the pipeline simultaneously.

2. The size of the diameter of the inner ring can be changed by installing the telescopic spring between the inner ring and the outer ring, so that the flange can be installed by workers more conveniently, and the problem that the flange cannot be installed due to the fact that the error of the flange or a pipeline is too large, and the resource waste is caused is avoided.

3. The sealing plate arranged on the inner side of the flange inner ring can fill and plug a gap between the natural gas pipeline and the inner ring, and the sealing effect of the pipeline joint is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and 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 these drawings without creative efforts.

Fig. 1 is a schematic view of the overall three-dimensional structure of the present invention;

fig. 2 is a schematic cross-sectional structure diagram of the present invention;

fig. 3 is a schematic view of a partial structure of the present invention.

Reference numerals:

1. a first flange; 101. a first outer race; 102. a first inner race; 103. a first connecting cylinder; 104. a tension spring; 105. a gasket; 106. a sealing plate; 107. a limiting seat; 108. a mounting seat; 109. connecting blocks; 110. a first fixing plate; 111. fixing the bolt; 112. a natural gas transport pipe; 113. a seal ring; 2. A second flange; 201. a second outer race; 202. a second inner race; 203. a second connecting cylinder; 204. fixing the rod; 205. a second fixing plate; 206. a through hole.

Detailed Description

The following, with reference to the drawings and the detailed description, further description of the present invention is made:

referring to fig. 1-3, a sealing flange connector for a natural gas transportation pipeline according to an embodiment of the present invention includes a first flange 1 and a second flange 2, a first outer ring 101 is disposed on one side of the first flange 1, a sealing ring 113 is fixedly mounted at one end of the first outer ring 101, a telescopic spring 104 is fixedly mounted on the inner side of the first outer ring 101, a first inner ring 102 is fixedly mounted at one end of the telescopic spring 104, a sealing plate 106 is fixedly mounted on the inner side of the first inner ring 102, a limiting seat 107 is fixedly mounted on the inner side of one end of the first inner ring 102, a first connecting cylinder 103 is fixedly mounted at one end of the limiting seat 107, a gasket 105 is fixedly mounted on the outer side of one end of the first connecting cylinder 103, a mounting seat 108 is fixedly mounted at the top end of the first outer ring 101, a connecting block 109 is fixedly mounted at the top end of the mounting seat, the top end of the connecting block 109 is fixedly provided with a first fixing plate 110, and one end of the first fixing plate 110 is fixedly provided with a fixing bolt 111 through threaded connection.

Through the above technical scheme of the present invention, one end of the second flange 2 is provided with a second outer ring 201, a second inner ring 202 is arranged in the second outer ring 201, the connection mode of the second inner ring 202 and the second outer ring 201 is the same as the connection mode of the first outer ring 101 and the first inner ring 102, one end of the second outer ring 201 is provided with a second connecting cylinder 203, the outer wall of the second outer ring 201 is fixedly provided with a fixing rod 204, one end of the fixing rod 204 is fixedly provided with a second fixing plate 205, and the second fixing plate 205 is provided with a through hole 206; two groups of mounting seats 108, two groups of connecting blocks 109 and two groups of first fixing plates 110 are arranged and are symmetrically distributed in the circle center of the first flange 1; two groups of fixing rods 204 and two groups of second fixing plates 205 are arranged and are symmetrically distributed in the circle center of the second flange 2; a natural gas transportation pipe 112 is fixedly clamped between the first inner ring 102 and the first connecting cylinder 103; the first fixing plate 110 and the second fixing plate 205 are positioned to correspond to each other, and the fixing bolt 111 fixedly connects the first fixing plate 110 and the second fixing plate 205 through the through hole 206.

In a specific application, firstly, one end of the natural gas transportation pipe 112 is clamped and fixed between the first inner ring 102 and the first connecting cylinder 103, when the clamping and fixing are performed, due to the fact that the expansion spring 104 has a certain expansion amount, a worker can change the diameter of the first inner ring 102, so that the natural gas transportation pipe 112 can be conveniently installed, the limiting seat 107 can limit the position of the natural gas transportation pipe 112, the gasket 105 can fill the gap between the first connecting cylinder 103 and the natural gas transportation pipe 112, the sealing plate 106 can fill the gap between the natural gas transportation pipe 112 and the first inner ring 102, the sealing ring 113 can fill the gap at the joint of the first flange 1 and the second flange 2, the sealing effect of the connecting piece on a pipeline is ensured, the first fixing plate 110 is connected with the second fixing plate 205 through the through hole 206 by the fixing bolt 111, the first flange 1 and the second flange 2 are fixedly connected, and the connection principle of the second flange 2 and the natural gas pipeline is the same as that of the first flange 1.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The sealing flange connecting piece of the natural gas transportation pipeline is characterized by comprising a first flange (1) and a second flange (2), wherein a first outer ring (101) is arranged on one side of the first flange (1), a sealing ring (113) is fixedly mounted at one end of the first outer ring (101), an expansion spring (104) is fixedly mounted on the inner side of the first outer ring (101), a first inner ring (102) is fixedly mounted at one end of the expansion spring (104), a sealing plate (106) is fixedly mounted on the inner side of the first inner ring (102), a limiting seat (107) is fixedly mounted on the inner side of one end of the first inner ring (102), a first connecting cylinder (103) is fixedly mounted at one end of the limiting seat (107), a gasket (105) is fixedly mounted on the outer side of one end of the first connecting cylinder (103), and a mounting seat (108) is fixedly mounted at the top end of the first outer ring (101), the top fixed mounting of mount pad (108) has connecting block (109), the top fixed mounting of connecting block (109) has first fixed plate (110), the one end of first fixed plate (110) passes through threaded connection fixed mounting has fixing bolt (111).

2. The sealing flange connection piece of a natural gas transportation pipeline according to claim 1, wherein a second outer ring (201) is arranged at one end of the second flange (2), a second inner ring (202) is arranged in the second outer ring (201), the connection mode of the second inner ring (202) and the second outer ring (201) is the same as that of the first outer ring (101) and the first inner ring (102), a second connecting cylinder (203) is arranged at one end of the second outer ring (201), a fixing rod (204) is fixedly arranged on the outer wall of the second outer ring (201), a second fixing plate (205) is fixedly arranged at one end of the fixing rod (204), and a through hole (206) is arranged on the second fixing plate (205).

3. The sealing flange connection piece for natural gas transportation pipelines according to claim 1, wherein the mounting seats (108), the connecting blocks (109) and the first fixing plates (110) are arranged in two groups and are symmetrically distributed around the center of the first flange (1).

4. The flanged connection for sealing of natural gas transportation pipelines according to claim 2, wherein there are two sets of the fixing rods (204) and the second fixing plate (205) and are symmetrically distributed around the center of the second flange (2).

5. The sealing flange connection piece for a natural gas transportation pipeline according to claim 1, wherein a natural gas transportation pipe (112) is fixedly mounted between the first inner ring (102) and the first connecting cylinder (103) in a clamping manner.

6. The sealed flange connection of a natural gas transportation pipeline of claim 2, wherein the first fixing plate (110) and the second fixing plate (205) are correspondingly positioned, and the fixing bolt (111) fixedly connects the first fixing plate (110) and the second fixing plate (205) through the through hole (206).