CN103090087A

CN103090087A - Pipeline leakage automatic blocking valve

Info

Publication number: CN103090087A
Application number: CN2013100607490A
Authority: CN
Inventors: 张晖
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-02-27
Filing date: 2013-02-27
Publication date: 2013-05-08
Anticipated expiration: 2033-02-27
Also published as: CN103090087B

Abstract

The invention belongs to the field of risk source pipeline blocking devices, and particularly relates to a pipeline leakage automatic blocking valve. The pipeline leakage automatic blocking valve comprises a valve body (1), wherein the valve body (1) comprises a main channel (2) and an automatic cut-off mechanism, and a cut-off mouth (3) is fixedly arranged inside the main channel (2). The automatic cut-off mechanism comprises an air cylinder (4), a piston (5) and a valve (6), and the piston (5) is movably matched with the inner wall of the air cylinder (4), and is fixedly connected with the valve (6) through a connection rod (16). A thrust spring (7) is fixedly arranged between the top portion of the piston (5) and the top portion of the air cylinder (4). A first drainage branching (8) and a second drainage branching (9) are fixedly assembled on two sides of the air cylinder (4), and two end mouths of the first drainage branching (8) and the second drainage branching (9) are respectively communicated with the inner cavity of the main channel (2) and the bottom portion area of the inner cavity of the air cylinder (4). The pipeline leakage automatic blocking valve is simple in structure, few in assembling unit, short in assembling time, high in safety, small in dielectric loss, and ideal in blocking effect.

Description

Pipe leakage automatic plugging valve

Technical field

The invention belongs to risk source pipeline blocking device field, relate in particular to and a kind ofly occur to leak in emergency circumstances at risk source pipeline, risk source pipeline is implemented the pipe leakage automatic plugging valve of quick blocking.

Background technique

mainly there is the agent injecting type non-stop plugging in existing pipeline leakage plugging, the external sealing type leak stopping, the binding type leak stopping, the stopper leak stopping, the metal leak stopping, pouring-in leak stopping and stick type leak stopping pattern, agent injecting type non-stop plugging utensil mainly comprises fixture, injection valve, the high pressure injection gun, ready-packaged joint, high-pressure pipeline, oil return afterbody joint, the element of construction such as oil pressure selector valve joint and manual hydraulic oil pump, the flange that is mainly used in chemical accident is revealed, and mainly adopt the taper stopper to carry out shutoff for the pipeline fracture, and the external sealing type leak stopping, the binding type leak stopping mainly comprises air bag, outer surface that can only blocking pipe leaks, leak also inapplicable for straight mouthful of pipeline.The stick type leak stopping mainly utilizes the characteristic of adhesive to glue benefit to pipeline appearance leak site, after adhesive solidifies, withdraws from external force, reaches the purpose of sealing.For the leakage of oil delivering pipe, carrying out the attention that pipe plugging will be especially when speedily carrying out rescue work, when getting angry a little away from valve, in order to reduce to greatest extent oil and gas leakage, this adopts partial sealing technology in pipeline often, blocks gas stream, band oil is got angry to become without oil get angry.

Above-mentioned shutoff utensil and method for blocking Main Problems thereof are: need to stop operating manually after fed sheet of a media, its system architecture is complicated again, and assembly parts is many, and installation time is long, and plugging effect is not bery desirable.

Summary of the invention

The present invention is intended to overcome the deficiencies in the prior art part and provides a kind of simple in structure, and assembly parts is few, and installation time is short, and is safe, and dielectric loss is little, the pipe leakage automatic plugging valve that plugging effect is desirable.

For solving the problems of the technologies described above, the present invention realizes like this.

A kind of pipe leakage automatic plugging valve, it comprises valve body; Described valve body comprises the main passage and automatically shuts down mechanism; Be fixed with the pass fracture in described main passage; The described mechanism that automatically shuts down comprises cylinder, valve and is placed in the interior piston of cylinder; Described piston and cylinder inner wall movingly, its geometrical center is fixedly connected through connecting rod and valve; Be fixed with thrust spring between the top of described piston and the top of cylinder; The working surface of described valve is corresponding with the pass fracture, to guarantee the folding of main passage; Fixedly be furnished with the first drainage shunt and the second drainage in the both sides of described cylinder along separate routes; Described the first drainage communicates with main passage inner chamber and cylinder inner cavity bottom section respectively with the second drainage two-port along separate routes along separate routes.

As a kind of preferred version, the present invention is fixed with respectively the first spherical valve and the second spherical valve along separate routes with in the second drainage along separate routes successively in described the first drainage.

As another kind of preferred version, the present invention is fixed with the cylinder attaching nut between described cylinder and main passage; Be fixed with the connecting rod nut on described cylinder attaching nut; The outer wall of described connecting rod and connecting rod nut inner wall are movingly.

The present invention automatically shuts down mechanism by arranging on valve body, occur to leak in emergency circumstances at risk source pipeline, can implement automatic quick blocking to risk source pipeline.The present invention is simple in structure, and assembly parts is few, and installation time is short, and is safe, and dielectric loss is little, and plugging effect is desirable.

Description of drawings

The invention will be further described below in conjunction with the drawings and specific embodiments.Protection scope of the present invention not only is confined to the statement of following content.

Fig. 1 is overall structure schematic diagram of the present invention.

In figure: 1, valve body; 2, main passage; 3, close fracture; 4, cylinder; 5, piston; 6, valve; 7, thrust spring; 8, the first drainage along separate routes; 9, the second drainage along separate routes; 10, the first spherical valve; 11, the second spherical valve; 12, cylinder attaching nut; 13, connecting rod nut; 14, seal ring; 15, adpting flange; 16, connecting rod.

Embodiment

As shown in the figure, pipe leakage automatic plugging valve, it comprises valve body 1; Described valve body 1 comprises main passage 2 and automatically shuts down mechanism; Be fixed with in described main passage 2 and close fracture 3; The described mechanism that automatically shuts down comprises cylinder 4, valve 6 and is placed in the interior piston 5 of cylinder 4; Described piston 5 and cylinder 4 inwalls movingly, its geometrical center is fixedly connected through connecting rod 16 and valve 6; Be fixed with thrust spring 7 between the top of the top of described piston 5 and cylinder 4; The working surface of described valve 6 is corresponding with pass fracture 3, to guarantee the folding of main passage 2; Fixedly is furnished with the first drainage the 8 and second drainage shunt 9 along separate routes in the both sides of described cylinder 4; Described the first drainage 8 communicates with main passage 2 inner chambers and cylinder 4 intracavity bottom zones respectively with the two-port of the second drainage shunt 9 along separate routes.

The present invention is fixed with respectively the first spherical valve 10 and the second spherical valve 11 in the 8 and second drainage shunt 9 along separate routes successively in described the first drainage.

The present invention is fixed with cylinder attaching nut 12 between described cylinder 4 and main passage 2; Be fixed with connecting rod nut 13 on described cylinder attaching nut 12; The outer wall of described connecting rod 16 and connecting rod nut 13 inwalls are movingly.As shown in the figure, 14 is seal ring, with the sealing of guarantee system inside; 15 is adpting flange.

The present invention is applicable to the colliery, chemical industry, and the various pipelines such as oil, when causing that when coal mine gas from explosion or because of reasons such as other machineries piping facility damages, it has the function of the above pipeline of moment automatic plugging fracture location.Reaction time of the present invention is 10 milliseconds, can guarantee calamity after pipeline gas (or other types medium) normally is provided.Non-transformer of the present invention is controlled, and installation and maintenance are simple and convenient, and very economical, can be the various facility calamities of taking refuge such as colliery after normal operation supply press wind.The mode of action of the present invention is that pressure reduction presses off formula.

The present invention first by designing requirement, is fitted to the main passage 2 of valve body 1 key node of medium transport pipeline in use.Close the second drainage shunt 9, open the first spherical valve 10; When the urgency of leakage occurs in the risk source pipeline of instantly going, descending inner cavity of pipe is together with the first drainage shunt 8 inner chamber decompressions, piston 5 under the effect of pressurized gas the moment of this moment in cylinder 4 moves down, and connecting rod 16 promotes valves 6, will close fracture 3 by thrust spring 7 and shut.At this moment, whole medium transport pipeline is by automatic plugging.After leaking the urgency eliminating, need to restart pipe leakage automatic plugging valve, at this moment, open the second drainage shunt 9, close the first spherical valve 10.At this moment, the piston 5 in cylinder 4 returns back to original position under the pressure of transfer line medium, again closes at last the second drainage shunt 9 again, opens the first spherical valve 10, thereby completes the one action circulation of pipe leakage automatic plugging valve.

The above is only the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims

1. a pipe leakage automatic plugging valve, comprise valve body (1); It is characterized in that, described valve body (1) comprises main passage (2) and automatically shuts down mechanism; Be fixed with in described main passage (2) and close fracture (3); The described mechanism that automatically shuts down comprises cylinder (4), valve (6) and is placed in the interior piston (5) of cylinder (4); Described piston (5) and cylinder (4) inwall movingly, its geometrical center is fixedly connected through connecting rod (16) and valve (6); Be fixed with thrust spring (7) between the top of the top of described piston (5) and cylinder (4); The working surface of described valve (6) is corresponding with pass fracture (3), to guarantee the folding of main passage (2); Fixedly be furnished with the first drainage (8) and the second drainage shunt (9) along separate routes in the both sides of described cylinder (4); Described the first drainage along separate routes two-port of (8) and the second drainage shunt (9) communicates with main passage (2) inner chamber and cylinder (4) intracavity bottom zone respectively.

2. pipe leakage automatic plugging valve according to claim 1, is characterized in that: be fixed with respectively successively the first spherical valve (10) and the second spherical valve (11) on (9) in described the first drainage shunt (8) along separate routes with the second drainage.

3. pipe leakage automatic plugging valve according to claim 2, is characterized in that: be fixed with cylinder attaching nut (12) between described cylinder (4) and main passage (2); Be fixed with connecting rod nut (13) on described cylinder attaching nut (12); The outer wall of described connecting rod (16) and connecting rod nut (13) inwall are movingly.