CN109882612A

CN109882612A - A kind of binary channel check-valves

Info

Publication number: CN109882612A
Application number: CN201910271202.2A
Authority: CN
Inventors: 雷向锋; 张琦; 韩冰; 徐东; 刘浩
Original assignee: Jiangsu Normal University
Current assignee: Jiangsu Normal University
Priority date: 2019-04-04
Filing date: 2019-04-04
Publication date: 2019-06-14

Abstract

A kind of binary channel check-valves, including main line pipeline, isocon, bypass line and check-valves, the isocon are mounted between main line pipeline and bypass line, and are equipped with check-valves in the bypass line；The inside of the isocon has branch A and branch B, and the inner rotation of the isocon is connected with for one of them shunting plectrum of the opening/closing branch A and branch B；Check-valves in parallel there are two being set in pipeline, and it is equipped between main line pipeline and bypass line and shunts plectrum, air-flow is passed through by a branch in normal state, after the check-valves in this branch blocks, fluid flows back before the check-valves of blocking, makes to shunt plectrum rotation, another branch is connected, the branch of blocking is closed simultaneously, it thus can be to avoid in valve blockage, it is necessary to valve is repaired or replaced after pressure release of stopping.

Description

A kind of binary channel check-valves

Technical field

The present invention relates to natural gases to transport, and in particular to a kind of binary channel check-valves.

Background technique

Shale gas is a kind of Unconventional gas, shale gas be in a manner of adsorbing and dissociate preservation in shale and mudstone stratum And its natural gas in interlayer.The shale gas resource very abundant in China, with the progress of production technique, domestic shale natural gas It is rapidly developed, the current country has built up multiple shale gas gas fields, but each gas field is due to the geography of its own Location circumstances, geological conditions, gas reservoir condition, the difference of workable reserves, the shale natural gas production for resulting in each gas field are set Standby and production technology is different, and generally existing pipeline instrument and equipment is easily blocked in process of production.

Since pipeline medium viscosity is big and containing the medium more than abrasive grain, leads to valve blocks, repaired after the pressure release that needs to stop or more Valve is changed, after closing check-valves front and back stop valve, check-valves is unloaded and places under repair or replace, the influence to pipeline conveying is very big.

Summary of the invention

In order to overcome the problems, such as, the present invention provides a kind of binary channel check-valves.

Technical solution of the present invention is specific as follows:

A kind of binary channel check-valves, including main line pipeline, isocon, bypass line and check-valves, the isocon installation Check-valves is installed between main line pipeline and bypass line, and in the bypass line；

There is branch A and branch B, the inner rotation of the isocon to be connected with for opening/closing for the inside of the isocon One of them shunting plectrum of the branch A and branch B；

The isocon is taken over by main line pipeline and is detachably connected with the main line pipeline, and the isocon passes through branch Pipeline adapter tube is detachably connected with the bypass line.

Preferably, the inside of the isocon is fixed with limited block, and the inner wall of the branch A and the branch B are fixed with With the seal block of the shunting plectrum cooperation.

Preferably, it is rotatablely connected between the shunting plectrum and the isocon by shaft, the outside of the isocon Equipped with state instruction button, the state instruction button is fixedly connected with the shaft, and the outer wall of the state instruction button is fixed with finger Show that needle, the outer wall of the isocon are additionally provided with the state dial plate with indicator cooperation.

Preferably, pin hole is offered in the indicator, the outer wall of the state instruction button offers limit hole, the shape Pin shaft, the pin shaft and the pin hole, limit hole transition fit are removably connected on state dial plate.

Preferably, the outside for shunting plectrum is equipped with sealing strip in one week.

Compared with prior art, beneficial effects of the present invention:

1. the present invention is set in the duct, there are two check-valves in parallel, and are equipped between main line pipeline and bypass line Plectrum is shunted, air-flow is passed through by a branch in normal state, and after the check-valves in this branch blocks, fluid is being blocked Check-valves before flow back, make to shunt plectrum rotation, another branch be connected, while the branch of blocking being closed, thus may be used To avoid in valve blockage, it is necessary to valve is repaired or replaced after pressure release of stopping, maintains the smooth and equipment fortune of pipeline gas transmission Capable continuity；

2. simultaneously, can due to being switched in another normal pipeline equipped with the state instruction button being connect with shunting plectrum To be seen to be the valve damage of which branch, therefore the valve of blocking can be replaced or be tieed up in the case where not parking It repairs, therefore gas transmission operation will not be stopped over, while being safeguarded again to gas pipeline.

Detailed description of the invention

Fig. 1 is a kind of structural schematic diagram of binary channel check-valves described in the embodiment of the present invention 1；

Fig. 2 is isocon structural schematic diagram described in the embodiment of the present invention 1；

Fig. 3 is state instruction button structure schematic diagram described in the embodiment of the present invention 1；

Fig. 4 is shunting plectrum structure schematic diagram described in the embodiment of the present invention 1；

In figure 1 above -4,1, main line pipeline；2, isocon；201, branch A；202, branch B；21, main line pipeline is taken over； 22, bypass line is taken over；23, limited block；24, seal block；3, bypass line；4, check-valves；5, plectrum is shunted；51, shaft； 52, sealing strip；6, state instruction button；601, limit hole；61, indicator；611, pin hole；62, state dial plate；63, pin shaft.

Specific embodiment:

The present invention is described further with reference to the accompanying drawings.

Embodiment 1

As shown in Figure 1, a kind of binary channel check-valves, including main line pipeline 1, isocon 2, bypass line 3 and check-valves 4, Isocon 2 is mounted between main line pipeline 1 and bypass line 3, and check-valves 4 is equipped in bypass line 3；Main line pipeline 1 passes through It is divided into two bypass lines 3 after crossing isocon 2, a check-valves 4 is equipped with above two bypass lines 3, latter two right branch Pipeline 3 carries out gas transmission in being incorporated into main line pipeline 1 and supplies gas, can be in a bypass line 3 by two bypass lines 3 of setting When failure, using another progress gas transmission, therefore maintenance shut-downs can be avoided the problem that a certain extent.

As shown in Fig. 2, the inside of isocon 2 has branch A201 and branch B202, the inner rotation of isocon 2 is connected with For one of them shunting plectrum 5 of opening/closing branch A201 and branch B202；The inside of isocon 2 is fixed with limited block 23, branch The inner wall of road A201 and branch B202 are fixed with the seal block 24 cooperated with shunting plectrum 5, and isocon 2 is connect by main line pipeline Pipe 21 is detachably connected with main line pipeline 1, and isocon 2 is detachably connected by bypass line adapter tube 22 and bypass line 3, is shunted Plectrum 5 is the plate of two angled fixations, shunts plectrum 5 because of its design feature, can only stop a branch, and another One is conducting, therefore, when shunting plectrum 5 and being in initial position, a branch being on, such as branch B202, At this point, shunting pressure of 5 right half part of plectrum by air-flow, there is the trend rotated counterclockwise, and can be with by limited block 23 The position for shunting plectrum 5 is defined, and shunts 5 left-half edge of plectrum and is contacted with seal block 24, sealing is played and makees With therefore, air-flow passes through branch B202 always, and when the check-valves 4 in branch B202 blocks, air-flow reversely blows shunting 5 right half part of plectrum, therefore shunt plectrum 5 and rotate clockwise, until carrying out restraining position by limited block 23, and there is up time The trend of needle rotation, at this point, branch A201 is connected, and branch B202 is closed.

It is rotatablely connected between plectrum 5 and isocon 2 by shaft 51 as shown in figure 3, shunting, the outside of isocon 2 is equipped with State instruction button 6, state instruction button 6 are fixedly connected with shaft 51, and the outer wall of state instruction button 6 is fixed with indicator 61, are shunted The outer wall of pipe 2 is additionally provided with the state dial plate 62 cooperated with indicator 61, offers pin hole 611, state instruction button 6 in indicator 61 Outer wall offer limit hole 601, be removably connected with pin shaft 63 on state dial plate 62, pin shaft 63 and pin hole 611, limit hole 601 transition fits can be according to the instruction situation of state instruction button 6, indicator 61 and state dial plate when operating personnel's maintenance Instruction state between 62 dismantles the check-valves 4 of failure, and when disassembly, pin shaft 63 is taken out from state dial plate 62, inserts In pin hole 611 and corresponding limit hole 601, the location status for shunting plectrum 5 is kept, shunts plectrum after preventing disassembly 5 occur unexpected overturning.

As shown in figure 4, the outside for shunting plectrum 5 is equipped with sealing strip 52 in one week, shunting can be improved by sealing strip 52 Leakproofness and reliability between plectrum 5 and isocon 2.

Claims

1. a kind of binary channel check-valves, including main line pipeline (1), isocon (2), bypass line (3) and check-valves (4), special Sign is that the isocon (2) is mounted between main line pipeline (1) and bypass line (3), and pacifies in the bypass line (3) Equipped with check-valves (4)；

The inside of the isocon (2) has branch A (201) and branch B (202), and the inner rotation of the isocon (2) connects Have for one of them shunting plectrum (5) of the opening/closing branch A (201) and branch B (202)；

The isocon (2) is detachably connected by main line pipeline adapter tube (21) with the main line pipeline (1), the isocon (2) it is detachably connected by bypass line adapter tube (22) with the bypass line (3).

2. a kind of binary channel check-valves according to claim 1, which is characterized in that the inside of the isocon (2) is fixed Have limited block (23), the inner wall of the branch A (201) and the branch B (202) are fixed with to be cooperated with the shunting plectrum (5) Seal block (24).

3. a kind of binary channel check-valves according to claim 1, which is characterized in that the shunting plectrum (5) and described point It is rotatablely connected between flow tube (2) by shaft (51), the outside of the isocon (2) is equipped with state instruction button (6), the state Instruction button (6) is fixedly connected with the shaft (51), and the outer wall of the state instruction button (6) is fixed with indicator (61), described The outer wall of isocon (2) is additionally provided with the state dial plate (62) with the indicator (61) cooperation.

4. a kind of binary channel check-valves according to claim 3, which is characterized in that offer pin on the indicator (61) The outer wall in hole (611), the state instruction button (6) offers limit hole (601), is detachably connected on the state dial plate (62) Have pin shaft (63), the pin shaft (63) and the pin hole (611), limit hole (601) transition fit.

5. a kind of binary channel check-valves according to claim 2, which is characterized in that the outside one for shunting plectrum (5) Sealing strip (52) are installed in week.