CN103016804B - Shear type pipe explosion flow-limiting valve - Google Patents
Shear type pipe explosion flow-limiting valve Download PDFInfo
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- CN103016804B CN103016804B CN201210579498.2A CN201210579498A CN103016804B CN 103016804 B CN103016804 B CN 103016804B CN 201210579498 A CN201210579498 A CN 201210579498A CN 103016804 B CN103016804 B CN 103016804B
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Abstract
The invention belongs to a control device on a medium pipeline and particularly relates to a shear type pipe explosion flow-limiting valve which can effectively control the flow speed of the medium in the pipeline in the case of explosion of the pipeline. The shear type pipe explosion flow-limiting valve comprises a valve body which is provided with medium flowing pipes at the two ends; a flow guider, a flow limiter, a supporting and shifting structure, a slider and a sliding rod are arranged in the valve body; the shear type pipe explosion flow-limiting valve further comprises a damping piece arranged outside the valve body for damping the movement of the slider and a shear trigger structure which is arranged on a shell of the valve body and is connected with the slider. The shear type pipe explosion flow-limiting valve is reasonable and simple in structural arrangement and flexible in motion, and is particularly suitable for limiting the flow of large-scale water pipelines in case of explosion in places without power supply.
Description
Technical field
The invention belongs to the control gear on medium pipeline, be specifically related to one when after pipeline generation pipe explosion accident, can effectively control the shearing booster flow-limiting valve of velocity of medium in pipeline.
Background technique
Long apart from medium output pipeline, such as large-scale water supply line, water supply line lays along the long distance of geography.Existing pipeline control design all adopts the layout control valves such as conventional valve opening and closing.When occurring pipeline breaking on pipeline, when the accidents such as booster, ducted medium can be rapidly from breaking, the ejection of booster place, thus cause pipe waterflooding accident; Ducted pressure change sharply simultaneously can produce greatly and impact in pipeline, for aqueduct, can produce impact of water hammer, affects the safety of pipeline miscellaneous part.How to address the above problem, when occurring after booster on large-scale water supply line, the pressure that can realize in water supply line changes slowly, even can automatically large-scale water supply line be closed, for valve manufacture, user, are all urgent problems, particularly, in the area that there is no power supply, how to address the above problem equal not relevant utilization in prior art.
Summary of the invention
The object of the present invention is to provide one in the time of pipeline medium transport, when occurring after booster, can realize pressure medium in pipeline and slowly discharge, even close the shearing booster flow-limiting valve of pipeline, thereby address the above problem.
The technological scheme of booster flow-limiting valve of the present invention is: it comprises that two ends offer the valve body of MEDIA FLOW siphunculus, and it also comprises:
In valve body, establish:
Deflector, described deflector is arranged in the cavity of valve body housing formation in face of media flow direction, between the guide face of described deflector and valve body inner walls, forms water conservancy diversion runner;
Current limliting body, described current limliting body and described deflector be opposing is connected setting, between described current limliting body current limliting face and described valve body inner walls, forms flow-restricting flowpath;
Support moving structure, described deflector and described current limliting body are supported on and support between moving structure;
Slide block, is connected with described deflector and described current limliting body;
Slide bar, described slide block both sides are provided with at least one slide bar;
It also comprises and being located at outside valve body:
The damping device that slide block moves, is connected with one end of described slide bar;
It also comprises and is located at the trigger architecture of being cut being connected with slide block on valve body housing.
In the technical program: the deflector arranging in valve body guarantees in the time that pipeline normally moves, when medium process booster flow-limiting valve, the normal pressure that deflector on the one hand bears medium, on the other hand, forms water conservancy diversion runner between it and valve body inner walls and reduces to greatest extent the linear loss of pressure medium; After pipe explosion accident occurs, deflector bears medium acutely increases pressure simultaneously.
Between the current limliting body of setting in valve body and valve body inner walls, form flow-restricting flowpath; In the time of normal medium transport, flow-restricting flowpath reduces the normal conveying of the linear loss assurance medium of pressure medium to greatest extent; After pipe explosion accident occurs, the movement of current limliting body, making to form flow-restricting flowpath between current limliting body and valve body inner walls narrows little, to the mobile formation damping function of medium, the outer vent flow of less medium, the moving process of current limliting body is realized the slow variation of pressure medium, thereby after solution booster, the acute variation of pipeline internal medium pressure, realize throttling, prevent the impact of the acute variation of booster pressure medium, for aqueduct, the water hammer solving in pipeline has problems, and avoids the generation of booster water hammer accident.
Support moving structure and realize deflector and the support of current limliting body in valve cavity, realize deflector and the rectilinear movement of current limliting body in valve cavity simultaneously.
Slide block can be gone out the pressure transmission of medium, can move with the rectilinear movement of deflector and current limliting body simultaneously.
Slide bar is for the pressure of Transfer Medium.
The effect of the damping device that slide block moves is after the pressure of Transfer Medium that affords slide bar, and slide bar and slide block are implemented to reaction force, hinders the movement of slide block, hinders the movement of deflector and current limliting body, reduces the great change of pressure medium.
Cut trigger architecture and guarantee to be used in and occur after booster, slide block and the deflector being connected with slide block and current limliting body could move; In the time that pipeline normally moves, cut the normal pressure enforcement of the medium reaction force that trigger architecture bears deflector, avoid deflector and current limliting body to move in the time that pipeline normally moves.Cut trigger architecture and can be adopted power free mechanical structure;
Above-mentioned deflector and current limliting shape are similar to bullet shape, the resistance while being conducive to reduce media flow.
The structure of further optimizing: deflector is identical with the shape of current limliting body.Arranging on the one hand of same shape can cut down finished cost, and is convenient to install simultaneously, do not have the reverse problem of installing.
Deflector in the present invention and current limliting body play function separately while preventing booster unidirectional;
Also can while preventing booster, play a role two-way,, in the time of the pipeline burst of the rear end of booster flow-limiting valve, deflector plays water conservancy diversion carrying effect, and current limliting body plays mobile metering function; In the time of the pipeline burst of the front end of booster flow-limiting valve, deflector plays mobile metering function, and current limliting body plays water conservancy diversion carrying effect.
The realization of above-mentioned functions can realize by the similar shape of deflector and current limliting body.
The structure of further optimizing, described valve body comprises front valve shell and rear valve body, connects sealing between front valve shell and rear valve body.The installation that the structure of front valve shell and rear valve body is conducive to valve inner structure is connected.
The structure of further optimizing, described valve body housing is provided with the mounting hole for internals is installed, and mounting hole is provided with valve gap and valve seal outward.
The structure of further optimizing, forms water conservancy diversion runner between the guide face of described deflector and valve body inner walls, valve gap inwall; Between described current limliting body current limliting face and described valve body inner walls, valve gap inwall, form flow-restricting flowpath.
The support moving structure of optimizing: comprise the supporting track being fixed in valve body, be arranged at the moving member on supporting track, described moving member is connected with described deflector and described current limliting body.
Described moving member can have various structures, such as adopting the single slide block structure being connected with track, or vehicle structure with roller etc.Supporting moving structure can arrange one or more according to the size of caliber carrying.
The structure of further optimizing, described in cut trigger architecture and comprised the hole of offering on valve body housing, top, hole is provided with cover plate, the part in hole is provided with spliced body structure, is provided with shear pin and is connected with slide block in spliced body structure.This structure is conducive to cover plate to open and change shear pin conveniently.
Described spliced body structure comprises the stake body being connected with valve body, has the hinge last that axis is vertical with media flow direction in stake body, is provided with shear pin in hinge last, and the other end of shear pin is stuck in the hole of offering on slide block.
This mechanical type is cut trigger architecture, its essence is and is connecting the weak section of a shearing force carrying of valve body and slide block, and when pressure medium is greater than after the shearing force limit that shear pin can bear, shear pin fracture, excites deflector and current limliting body to move.It can be by adopting brittle material and/or small cross sections to realize.Shear pin is the latch made from a brittle material, ties down deflector, and in the time that deflector is subject to fluid thrust to be normal thrust, shear pin intensity is enough, and when thrust is much larger than normal condition (when booster), shear pin is cut off.
The structure of further optimizing, described valve body housing is provided with guide cylinder, and described slide bar passes guide cylinder, between slide bar and guide cylinder, is provided with seal arrangement.This structure has solved the mobile guide problem of slide bar, has solved slide bar at the sealing problem passing in valve body process simultaneously.
The structure of further optimizing, described slide bar comprises the first slide bar and the second slide bar that are located at slide block both sides, and the first damping device that the first slide bar moves with slide block is connected, and the second damping device that the second slide bar moves with slide block is connected.
Said structure solves the problem of transmission that is connected power of slide bar and slide block, and meanwhile, also when realizing two-way booster current limliting, deflector and current limliting body effect exchange provide architecture basics.
It also comprises support, and described support one end is connected with deflector, and the other end of described support is connected with current limliting body; Described support is also connected with slide block.Support is arranged between deflector and current limliting body, and deflector and current limliting body are connected into overall assembly, is conducive to reduce the pressure loss to pipeline medium simultaneously.
Booster flow-limiting valve working principle is as follows:
1, in the time that pipeline normally moves, system flow rate is little, and the thrust that liquid acts on deflector to flow direction is less, the shearing strength of now being cut trigger architecture is enough, can fix slide block, makes the mediate position of damage by water coefficient minimum of deflector, now valve resistance is little, reduces system damage by water;
2, when after valve when somewhere pipeline section generation booster, pipeline flow velocity improves rapidly, the thrust that liquid acts on deflector raises greatly, the shearing strength of being cut trigger architecture is not enough far away, and shear pin is cut off, and deflector runs along support moving structure under hydraulic action, and (guide rail and support unit adopt roller structure, resistance is very little), current limliting body moves thereupon, reduces the sectional area of flow-restricting flowpath, reduces the outer vent flow of medium; Meanwhile, slide block is encountered slide bar, encounters the damping device being connected with slide bar, movement slows down, and in this process, damping device can be to the mobile generation damping of deflector and current limliting body;
3, deflector advance to stroke limit unit set position time, halt, now pipeline by booster flow-limiting valve limited flow rate to setting flow;
4, in the time that attendant finds pipe explosion accident, close the service valve of installing before booster flow-limiting valve, the hydraulic damping device of manually-operable simultaneously, is pushed into valve neutral position, valve reset by deflector; Change and cut trigger architecture simultaneously, open by the cover plate on valve body housing, change inner shear pin;
When before valve when booster, working principle is identical with 3,4, and just direction becomes and comes.
Booster flow-limiting valve main technical points is:
Induction booster carry out current limliting close valve to be cut trigger architecture mechanics unit be shear pin, reliability is high, does not have unexpected factor;
The action of valve booster current limliting is cut trigger architecture from booster and is ruptured and close slowly to unrestricted motion to current limliting quick closing valve to current limliting, and multistage motion is closed, and effectively limits booster flow velocity and eliminates simultaneously and close valve water hammer;
Valve motion relies on waterpower self-characteristic completely, drives without any external force, installs for large-scale pipeline field, low according to patience to environment, condition;
Aperture after valve pass puts in place is adjustable, even can close completely.
Valve can have beidirectional feature, no matter be that after the front booster of valve or valve, booster all can carry out effective current limliting to pipeline.
This valve mechanism arranges rationally simple, and flexible movements are specially adapted to the booster current limliting of the large-scale waterpipe in non-transformer area.
Accompanying drawing explanation
Fig. 1 is that booster flow-limiting valve structure master looks schematic diagram.
Fig. 2 is that scheme two booster flow-limiting valve structure masters look schematic diagram.
Fig. 3 is for being cut trigger architecture schematic diagram.
Embodiment
The present invention, after occurring based on booster, stops pipeline internal medium pressure, flow sharply to change, and controls pressure medium, flow in pipeline and slowly changes and propose.Under technical solution of the present invention, there is multiple embodiment; the following example is only with the concrete enforcement structure of explanation the present invention; protection scope of the present invention is not limited to following concrete enforcement structure, and the structure that those skilled in the art implements to be different from following concrete enforcement structure in technological scheme disclosed by the invention is also within protection scope of the present invention.
As shown in Figure 1, valve body comprises front valve shell 101 and rear valve body 102, between front valve shell 101 and rear valve body 102, is connected sealing by front valve shell 101 with the flange arrangement 103 arranging on rear valve body 102.As shown in Figure 2, valve body housing is provided with the mounting hole 116 for internals is installed to another kind of scheme, outer valve gap 114 and the valve seal of being provided with of mounting hole 116, and valve gap 114 seals by bolt 115 with valve body.
Install in cavity 106 and be provided with support moving structure, in the present embodiment, according to caliber, suffered carrying, is installing cavity 106 top and the bottom, and left and right portion (Fig. 1 or 2) is equipped with support moving structure and forms stable movable support.Also can be according to caliber, suffered being carried on installed 106 of cavitys and one or two or three are set are supported moving structures.
Support moving structure and comprise the supporting track 201 being fixed in valve body, be arranged at the moving member 202 on supporting track.Moving member 202 can adopt and supporting track 201 slide blocks, also can adopt lower bassinet structure.In the present embodiment, adopt lower bassinet structure, lower bassinet structure comprises connection dunnage 203, connects in dunnage 203 and is connected with roller 204, and this structure connection is supported more stable, and moving resistance is little simultaneously.Between supporting track 201 and moving member 202, stroke limit structure can be provided with, the structure (not shown) such as limiting stopper, block can be adopted.
Install in cavity 106 and establish deflector 301, the shape of deflector is a part of ellipsoidal shape; Or by the tangent solid of rotation shape forming of multiple arc sections; Or by the tangent solid of rotation forming of multiple arc sections, the shape of the end of solid of rotation and cylindrical body or the tangent formation of Rotary-table; Or ball-crown body shape; Or by ball-crown body and cylindrical body or the tangent shape forming of Rotary-table.
In the present embodiment, the shape of deflector 301 is by the tangent solid of rotation shape forming of multiple arc sections, as sub warhead.
The fluid 302 of limiting in cavity 106 is installed, and the shape of current limliting body is a part of ellipsoidal shape; Or by the tangent solid of rotation shape forming of multiple arc sections; Or by the tangent solid of rotation forming of multiple arc sections, the shape of the end of solid of rotation and cylindrical body or the tangent formation of Rotary-table; Or ball-crown body shape; Or by ball-crown body and cylindrical body or the tangent shape forming of Rotary-table.
In the present embodiment, the shape of current limliting body 302 is by the tangent solid of rotation shape forming of multiple arc sections, as sub warhead.
In the present embodiment, deflector 301 is identical with the outer shape of current limliting body 302, and while all needing to implement booster current limliting for booster flow-limiting valve front end, rear end, the effect of deflector 301 and current limliting body 302 can be exchanged.
The setting of supporting or opposing of deflector 301 and current limliting body 302; Support 303 is located between deflector 301 and current limliting body 302; Support 303 front ends are connected with deflector 301, and the rear end of support 303 is connected with current limliting body 302.
Between current limliting body 302 current limliting faces and described valve body inner walls, valve gap 114 inwalls, form flow-restricting flowpath 111.
Between valve interior wall and deflector and/or current limliting body, be provided with deflector, current limliting body moves limit structure, for being provided with deflector between the structure valve interior wall of two-way booster current limliting and deflector and current limliting body, current limliting body moves limit structure; Move limit structure for being provided with current limliting body between the structure valve interior wall of unidirectional booster current limliting and current limliting body.Mobile limit structure can be limiting stopper.
Valve body housing be provided be connected with slide block 304 cut trigger architecture 501.
As shown in Figure 3, cut trigger architecture 501 and comprised the hole 109 of offering on valve body housing, 109 tops, hole are provided with cover plate 701, cover plate 701 is connected with valve body by bolt 702, a part in hole 109 is provided with spliced body structure, and spliced body structure comprises the stake body 113 being connected with valve body, has the hinge last 112 that axis is vertical with media flow direction in stake body 113, in hinge last 112, be provided with shear pin 502, the other end of shear pin 502 is stuck in the hole 305 of offering on slide block 304.
As shown in Figure 1 or 2, slide block 304 both sides are provided with at least one slide bar.
All need to implement the structure of booster current limliting for booster flow-limiting valve front end, rear end:
Slide bar comprises the first slide bar 401 and the second slide bar 402.Be provided with guide cylinder 107, guide cylinder 108 with front valve shell 101 and the rear valve body 102 of slide block 304 relative positions; The first slide bar 401 is through guide cylinder 107 sealing with it.Sealing configuration can adopt between the first slide bar 401 and the surface of contact of guide cylinder 107 seal ring is set.The second slide bar 402 is through guide cylinder 108 sealing with it.Sealing configuration can adopt between the second slide bar 402 and the surface of contact of guide cylinder 108 seal ring is set.
The first damping device 601 that the first slide bar 401 moves with slide block is connected, and the second damping device 602 that the second slide bar 402 moves with slide block is connected.
For the structure of only requiring booster flow-limiting valve rear end enforcement booster current limliting, only need the first slide bar 401, and be connected with the damping device 601 that slide block moves in the outer end of the first slide bar 401.
Damping device is realized moving slowly of slide bar, can adopt damping oil cylinder, and damping oil cylinder is simple in structure, is convenient to arrange on valve body; Preferably there is the damping oil cylinder of Multi-stage damping effect, as ZL2010101502736 valve slow opening Slow Close damping device.
For needing current limliting until the valve body structure of closing, the valve seat of setting and deflector and/or current limliting body fitted seal in valve body.
The content that this specification is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (10)
1. a shearing booster flow-limiting valve, it comprises that two ends offer the valve body of MEDIA FLOW siphunculus, it is characterized in that it also comprises:
In valve body, establish:
Deflector, described deflector is arranged in the cavity of valve body housing formation in face of media flow direction, between the guide face of described deflector and valve body inner walls, forms water conservancy diversion runner;
Current limliting body, described current limliting body and described deflector be opposing is connected setting, between described current limliting body current limliting face and described valve body inner walls, forms flow-restricting flowpath;
Support moving structure, described deflector and described current limliting body are supported on and support between moving structure;
Slide block, is connected with described deflector and described current limliting body;
Slide bar, described slide block both sides are provided with at least one slide bar;
It also comprises and being located at outside valve body:
The damping device that slide block moves, is connected with one end of described slide bar;
It also comprises and is located at the trigger architecture of being cut being connected with slide block on valve body housing.
2. shearing booster flow-limiting valve as claimed in claim 1, is characterized in that described valve body comprises front valve shell and rear valve body, connects sealing between front valve shell and rear valve body.
3. shearing booster flow-limiting valve as claimed in claim 1, is characterized in that described valve body housing is provided with the mounting hole for internals is installed, and mounting hole is provided with valve gap and valve seal outward.
4. shearing booster flow-limiting valve as claimed in claim 1, is characterized in that forming water conservancy diversion runner between the guide face of described deflector and valve body inner walls, valve gap inwall; Between described current limliting body current limliting face and described valve body inner walls, valve gap inwall, form flow-restricting flowpath.
5. shearing booster flow-limiting valve as claimed in claim 1, is characterized in that described support moving structure comprises the supporting track being fixed in valve body, is arranged at the moving member on supporting track, and described moving member is connected with described deflector and described current limliting body.
6. shearing booster flow-limiting valve as claimed in claim 1, described in it is characterized in that, cut trigger architecture and comprised the hole of offering on valve body housing, top, hole is provided with cover plate, and the part in hole is provided with spliced body structure, is provided with shear pin and is connected with slide block in spliced body structure.
7. shearing booster flow-limiting valve as claimed in claim 6, it is characterized in that described spliced body structure comprises the stake body being connected with valve body, in stake body, have the hinge last that axis is vertical with media flow direction, be provided with shear pin in hinge last, the other end of shear pin is stuck in the hole of offering on slide block.
8. shearing booster flow-limiting valve as claimed in claim 1, is characterized in that described valve body housing is provided with guide cylinder, and described slide bar passes guide cylinder, between slide bar and guide cylinder, is provided with seal arrangement.
9. shearing booster flow-limiting valve as described in claim 1 or 8, it is characterized in that described slide bar comprises the first slide bar and the second slide bar that are located at slide block both sides, the first damping device that the first slide bar moves with slide block is connected, and the second damping device that the second slide bar moves with slide block is connected.
10. shearing booster flow-limiting valve as claimed in claim 1, is characterized in that it also comprises support, and described support one end is connected with deflector, and the other end of described support is connected with current limliting body; Described support is also connected with slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579498.2A CN103016804B (en) | 2012-12-27 | 2012-12-27 | Shear type pipe explosion flow-limiting valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210579498.2A CN103016804B (en) | 2012-12-27 | 2012-12-27 | Shear type pipe explosion flow-limiting valve |
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| Publication Number | Publication Date |
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| CN103016804A CN103016804A (en) | 2013-04-03 |
| CN103016804B true CN103016804B (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210579498.2A Active CN103016804B (en) | 2012-12-27 | 2012-12-27 | Shear type pipe explosion flow-limiting valve |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2076917A (en) * | 1980-06-03 | 1981-12-09 | Alpha Process Control | Break-away coupling for incorporation in hoselines or pipelines |
| CN201779323U (en) * | 2010-09-27 | 2011-03-30 | 重庆四联油气设备制造有限公司 | Liquefied natural gas (LNG) dispenser release coupler |
| CN201896979U (en) * | 2010-01-29 | 2011-07-13 | 张润忠 | Pressure control valve and solar water heater |
| CN202032144U (en) * | 2011-05-09 | 2011-11-09 | 成都安迪生测量有限公司 | Pull-apart valve |
| CN203023571U (en) * | 2012-12-27 | 2013-06-26 | 武汉大禹阀门股份有限公司 | Shear type pipe burst flow limiting valve |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7156119B2 (en) * | 2004-01-16 | 2007-01-02 | Freudendahl Erling A | Hydrant knock-off combination flow stop and backflow check valve |
-
2012
- 2012-12-27 CN CN201210579498.2A patent/CN103016804B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2076917A (en) * | 1980-06-03 | 1981-12-09 | Alpha Process Control | Break-away coupling for incorporation in hoselines or pipelines |
| CN201896979U (en) * | 2010-01-29 | 2011-07-13 | 张润忠 | Pressure control valve and solar water heater |
| CN201779323U (en) * | 2010-09-27 | 2011-03-30 | 重庆四联油气设备制造有限公司 | Liquefied natural gas (LNG) dispenser release coupler |
| CN202032144U (en) * | 2011-05-09 | 2011-11-09 | 成都安迪生测量有限公司 | Pull-apart valve |
| CN203023571U (en) * | 2012-12-27 | 2013-06-26 | 武汉大禹阀门股份有限公司 | Shear type pipe burst flow limiting valve |
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| CN103016804A (en) | 2013-04-03 |
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Denomination of invention: Shear type burst pipe flow limiting valve Effective date of registration: 20230420 Granted publication date: 20140521 Pledgee: Bank of China Limited Wuhan Economic and Technological Development Zone sub branch Pledgor: WUHAN DAYU VALVE Co.,Ltd. Registration number: Y2023420000169 |