CN210716420U

CN210716420U - Connection structure of gas circuit pipeline

Info

Publication number: CN210716420U
Application number: CN201920705632.6U
Authority: CN
Inventors: 陈彦岗; 杨春涛; 杨春水
Original assignee: Anhui Jingyi Automation Equipment Technology Co Ltd
Current assignee: Anhui Jingyi Automation Equipment Technology Co Ltd
Priority date: 2019-05-17
Filing date: 2019-05-17
Publication date: 2020-06-09
Anticipated expiration: 2029-05-17

Abstract

The utility model discloses a connection structure of gas circuit pipeline relates to the pipe connection field, including last connecting pipe, looper flange, pressure cover, sealing washer, welded flange, lower connecting pipe, connecting plate and bolt, the utility model discloses it is not high to device processing size precision requirement, because the connected mode is that the snap ring is connected, allows to have certain dimensional error, the utility model discloses can also solve the unable zonulae occludens that the connecting pipe exists in the hard joint and the not good problem of sealed effect to simple to operate can repeatedly dismantle, reduces the device consumption, the on-the-spot maintenance of being convenient for, and because the sealing washer is not direct with the exhaust gas contact of transport, make the sealing washer be difficult to corroded the destruction, guarantee sealed effect, the utility model discloses reduce the device required precision, simple to operate reduces the loss, and sealed effectual.

Description

Connection structure of gas circuit pipeline

Technical Field

The utility model relates to a pipe connection field, concretely relates to connection structure of gas circuit pipeline.

Background

In the semiconductor manufacturing industry, there are a large number of metal pipeline connections, mainly including welding, flange connection, and ferrule connection, which are hard connections.

The welding mode is that materials of a joint and a hard tube are fused by various welding methods, so that sealed connection is formed, the flatness of a welding surface is difficult to ensure in the connecting mode, the connection size error is large, and meanwhile, smoke dust and splashes are generated to influence the smoothness of the tube wall;

the flange connection mode has high requirements on the smoothness and the flatness of a sealing surface of a matched flange, the requirement on the position size is strict in online installation, the flange gasket is added at the joint of the flange connection to ensure sealing, and the flange gasket is usually made of flexible materials such as rubber, graphite, asbestos and the like, so that the flange gasket can be always contacted with liquid or gas in a pipeline, and is easily corroded and damaged by industrial waste liquid or waste gas to cause the damage to the sealing effect;

the cutting ferrule is connected and is generally applicable to DN25 a pipe diameter and connects, and when the bore exceeded DN25, the installation moment of torsion was big, is difficult to field operation.

The connection mode has a common defect, the requirement on the space position of the connecting pipe is strict, and the processing and production difficulty is increased. If the spatial position has deviation, the connection can not be performed or is not tight enough, the sealing reliability is reduced, and in severe cases, gas leakage is caused to pollute the environment of a factory.

Disclosure of Invention

An object of the utility model is to provide a connection structure of gas circuit pipeline, the utility model discloses it is not high to device processing size required precision, because the connected mode is the snap ring connection, allows there is certain dimensional error, the utility model discloses can also solve the unable zonulae occludens that the connecting pipe exists in the hard joint and the not good problem of sealed effect to simple to operate can repeated the dismantlement, reduces the device and consumes, the on-the-spot maintenance of being convenient for, and because the sealing washer is direct not contacted with the waste gas of transport, make the sealing washer be difficult to the corruption, guarantee sealed effect, the utility model discloses reduce device required precision, simple to operate reduces the loss, and sealed effectual.

A connecting structure of a gas path pipeline comprises an upper connecting pipe, a loop flange, a pressing sleeve, a sealing ring, a welding flange, a lower connecting pipe, a connecting plate and a bolt;

the loop flange cup joints on last connecting pipe, welding flange welds on connecting pipe down, it is located down the connecting pipe to go up the connecting pipe, the sealing washer cup joints on last connecting pipe and is located the connecting pipe down, press the cover cup joint last connecting pipe and with last connecting pipe sliding connection, the pressure cover of telling is located the sealing washer top and is located between loop flange and the welding flange, loop flange and welding flange pass through bolt fixed connection.

Preferably, the loose flange comprises a plug-in half ring, a sleeve half ring and an inner hexagon bolt, an annular anti-slip strip is arranged on the inner wall of the loose flange, a positioning insertion block is fixed on the end face of the plug-in half ring, a positioning insertion block groove matched with the positioning insertion block is formed in the end face of the sleeve half ring, a threaded hole is formed in the sleeve half ring, a T-shaped through hole matched with the threaded hole is formed in the plug-in half ring, and the inner hexagon bolt penetrates through the T-shaped through hole and is in threaded connection with the threaded hole to realize the connection and fixation of the plug-in half.

Preferably, the connecting plate is welded to the lower connecting pipe.

Preferably, the seal ring is made of a fluororubber material.

The utility model has the advantages that: simple structure, it is nimble to use, it is not high to device processing size required precision, because the connected mode is that the snap ring is connected, allows to have certain dimensional error, the utility model discloses can also solve the unable zonulae occludens that the connecting pipe exists in the hard joint and the problem that sealed effect is not good to simple to operate can repeated dismantlement, reduces the device consumption, the on-the-spot maintenance of being convenient for, and because the sealing washer is direct not contacted with the waste gas of carrying, make the sealing washer be difficult to by the corruption, guarantee sealed effect, the utility model discloses reduce device required precision, simple to operate reduces the loss, and sealed effectual.

Drawings

FIG. 1 is a schematic view of the overall structure of the device of the present invention;

FIG. 2 is a schematic view of the assembly of the device of the present invention;

fig. 3 is a cross-sectional view of the inventive apparatus;

FIG. 4 is a schematic structural view of a pressing sleeve in the device of the present invention;

FIG. 5 is a schematic structural view of a looper flange in the device of the present invention;

FIG. 6 is a schematic view of the structure of a half ring of the plug-in unit of the present invention;

FIG. 7 is a schematic view of the structure of the half ring of the external member of the device of the present invention;

FIG. 8 is a schematic view of a screw structure of the device of the present invention;

the connecting device comprises an upper connecting pipe 1, an upper connecting pipe 2, a loose flange 20, an insert semi-ring 200, a T-shaped through hole 201, a positioning insert block 21, an insert semi-ring 210, a threaded hole 211, a positioning insert block groove 22, a bolt hole 23, an anti-slip strip 24, an inner hexagon bolt 240, a hexagon groove 3, a pressing sleeve 4, a sealing ring 5, a welding flange 6, a lower connecting pipe 7 and a connecting plate.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention easy to understand, the invention is further explained by combining the specific embodiments.

As shown in fig. 1 to 8, a connection structure of a gas path pipeline includes an upper connection pipe 1, a looper flange 2, a pressing sleeve 3, a seal ring 4, a welding flange 5, a lower connection pipe 6, a connection plate 7, and a bolt 8; the requirement on the processing size precision of the device is not high, and a certain size error is allowed because the connection mode is the snap ring connection.

Loop flange 2 cup joints on last connecting pipe 1, welding flange 5 welds under on connecting pipe 6, it is located connecting pipe 6 down to go up connecting pipe 1, sealing washer 4 cup joints on last connecting pipe 1 and is located connecting pipe 6 down, press cover 3 cup joint last connecting pipe 1 and with last connecting pipe 1 sliding connection, the pressure cover 3 of telling is located sealing washer 4 top and is located between loop flange 2 and welding flange 5, loop flange 2 and welding flange 5 pass through bolt 8 fixed connection. Insert last connecting pipe 1 in connecting pipe 6 down, fill in sealing washer 4 in connecting pipe 6 down again, connect and lock looper flange 2 and welding flange 5 through locking bolt 8, looper flange 2 extrusion pressure cover 3 among the locking process, looper flange 2 mounted position is hugging closely pressure cover 3, pressure cover 3 extrusion sealing washer 4 makes sealing washer 4 warp, hold connecting pipe 1 tightly and be filled up the gap between connecting pipe 1 and the connecting pipe 6 down, form sealedly. Simple to operate can repeated dismantlement, reduces the device consumption, and the on-the-spot maintenance of being convenient for to because sealing washer 4 is not direct and the waste gas contact of carrying, make the sealing washer be difficult to by the corruption destruction, guarantee sealed effect.

The loose flange 2 comprises a plug-in half ring 20, a sleeve half ring 21 and an inner hexagon bolt 24, an annular anti-slip strip 23 is arranged on the inner wall of the loose flange 2, a positioning insertion block 201 is fixed on the end surface of the plug-in half ring 20, a positioning insertion block groove 211 matched with the positioning insertion block 201 is formed in the end surface of the sleeve half ring 21, a threaded hole 210 is formed in the sleeve half ring 21, a T-shaped through hole 200 matched with the threaded hole is formed in the plug-in half ring 20, and the inner hexagon bolt 24 penetrates through the T-shaped through hole 200 and is in threaded connection with the threaded hole 210 to realize the connection and fixation of the plug-in half ring. The mounting position of the hexagon socket head cap screw 24 is perpendicular to the end face of the half ring, the plug-in half ring 20 and the external member half ring 21 are sleeved on the upper connecting pipe 1, the positioning insertion block 201 is inserted into the positioning insertion block groove 211, the T-shaped through hole 200 and the threaded hole 210 are positioned on the same axis, then the hexagon socket head cap screw 24 is inserted into the positioning insertion block groove and screwed, the hexagon socket head cap screw 24 firmly fixes the plug-in half ring 20 and the external member half ring 21 together, meanwhile, the anti-skid strip 23 is tightly extruded on the surface of the connecting pipe 1, the cross section of the anti-skid strip 23 is triangular, namely, the outer end is sharp. The loop flange 2 is very flexible and convenient to use, and can be fixed even on the surface of a smooth pipeline.

The connecting plate 7 is welded to the lower connecting pipe 6. The connecting plate 7 is used for fixing the whole mechanism at a certain position and keeping the connection position stable.

The seal ring 4 is made of a fluororubber material. And the sealing ring 4 is of a circular truncated cone-shaped annular structure and has heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance.

One end of the hexagon socket head cap screw 24 is provided with a hexagon groove 240. The hexagon socket head cap screw 24 uses a hexagon socket head cap wrench, and is simple and convenient to install.

The specific implementation mode and principle are as follows:

when the device is required to be installed, firstly, the pressing sleeve 3 and the sealing ring 4 are sequentially sleeved on the upper connecting pipe 1, the sealing ring 4 is positioned below the pressing sleeve 3, then, the lower end of the upper connecting pipe 1 is inserted into the lower connecting pipe 6, and then, the sealing ring 4 is plugged into the lower connecting pipe 6;

then, a loop flange 2 is sleeved at a proper position on an upper connecting pipe 1, the installation position of the loop flange 2 is preferably tightly attached to a pressing sleeve 3 and is positioned above the pressing sleeve 3, when the loop flange 2 is installed, an insert half ring 20 and a sleeve half ring 21 are sleeved on the upper connecting pipe 1, a positioning insert block 201 is inserted into a positioning insert block groove 211, a T-shaped through hole 200 and a threaded hole 210 are positioned on the same axis, an inner hexagonal bolt 24 is inserted into the positioning insert block groove and is screwed, the insert half ring 20 and the sleeve half ring 21 are firmly fixed together by the inner hexagonal bolt 24, and meanwhile, an anti-slip strip 23 is extruded on the surface of the connecting pipe 1, the cross section of the anti-slip strip 23 is triangular, namely the outer end is sharp, the position is clamped, and the loop flange 2 cannot slide in the up and down;

finally, the looper flange 2 and the welding flange 5 are connected and locked through the locking bolt 8, the looper flange 2 extrudes the pressing sleeve 3 in the locking process, the pressing sleeve 3 extrudes the sealing ring 4, the sealing ring 4 deforms, the sealing ring 4 tightly holds the upper connecting pipe 1 and is fully plugged in a gap between the upper connecting pipe 1 and the lower connecting pipe 6 to form sealing;

when the pipe needs to be checked and maintained and disassembled, the upper connecting pipe 1 can be pulled out from the lower connecting pipe 6 only by unscrewing the bolts 8, and the loop flange 2 can be loosened by unscrewing the hexagon socket head cap screws 24 when necessary so as to adjust the position of the loop flange 2.

Based on the above, the utility model discloses simple structure, it is nimble to use, it is not high to device processing size precision requirement, because the connected mode is that the snap ring is connected, allows to have certain dimensional error, the utility model discloses can also solve the unable zonulae occludens that the connecting pipe exists in the hardlink and sealed not good problem of effect to simple to operate can repeated dismantlement, reduces the device and consumes, the on-the-spot maintenance of being convenient for to because sealing washer 4 is not direct with the waste gas contact of transport, make the sealing washer be difficult to by the corruption, guarantee sealed effect, the utility model discloses reduce device required precision, simple to operate reduces the loss, and sealed effectual.

It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of the invention or which are equivalent to the scope of the invention are embraced by the invention.

Claims

1. The connecting structure of the gas path pipeline is characterized by comprising an upper connecting pipe (1), a loop flange (2), a pressing sleeve (3), a sealing ring (4), a welding flange (5), a lower connecting pipe (6), a connecting plate (7) and a bolt (8);

loop flange (2) cup joints on last connecting pipe (1), welding flange (5) welding is under on connecting pipe (6), it is located connecting pipe (6) down to go up connecting pipe (1), sealing washer (4) cup joint on last connecting pipe (1) and are located connecting pipe (6) down, press cover (3) to cup joint at last connecting pipe (1) and with last connecting pipe (1) sliding connection, the institute tells to press cover (3) to be located sealing washer (4) top and be located between loop flange (2) and welding flange (5), loop flange (2) and welding flange (5) are through bolt (8) fixed connection.

2. The connecting structure of an air path pipe according to claim 1, wherein: the movable sleeve flange (2) comprises a plug-in half ring (20), a sleeve half ring (21) and an inner hexagon bolt (24), an annular anti-slip strip (23) is arranged on the inner wall of the movable sleeve flange (2), a positioning insertion block (201) is fixed on the end face of the plug-in half ring (20), a positioning insertion block groove (211) matched with the positioning insertion block (201) is formed in the end face of the sleeve half ring (21), a threaded hole (210) is formed in the sleeve half ring (21), a T-shaped through hole (200) matched with the threaded hole is formed in the plug-in half ring (20), and the inner hexagon bolt (24) penetrates through the T-shaped through hole (200) and is in threaded connection with the threaded hole (210) to achieve connection and fixation of the plug-in half ring (20).

3. The connecting structure of an air path pipe according to claim 1, wherein: the connecting plate (7) is welded on the lower connecting pipe (6).

4. The connecting structure of an air path pipe according to claim 1, wherein: the sealing ring (4) is made of fluororubber.