CN103292028B - Valve buffer - Google Patents

Valve buffer Download PDF

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Publication number
CN103292028B
CN103292028B CN201310034712.0A CN201310034712A CN103292028B CN 103292028 B CN103292028 B CN 103292028B CN 201310034712 A CN201310034712 A CN 201310034712A CN 103292028 B CN103292028 B CN 103292028B
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CN
China
Prior art keywords
piston
valve
cylinder body
buffer
end cap
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Expired - Fee Related
Application number
CN201310034712.0A
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Chinese (zh)
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CN103292028A (en
Inventor
钱雪松
钱子凡
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Changzhou Campus of Hohai University
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Changzhou Campus of Hohai University
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Priority to CN201310034712.0A priority Critical patent/CN103292028B/en
Publication of CN103292028A publication Critical patent/CN103292028A/en
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Publication of CN103292028B publication Critical patent/CN103292028B/en
Expired - Fee Related legal-status Critical Current
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Abstract

The present invention relates to a kind of valve buffer, use the present invention, when valve opening or closedown, flap rotates, and drivening rod realizes swinging, the relative movement in cylinder body of connecting rod driven plunger; At the valve closing initial stage, flap is away from the adjacent domain of valve seat, and piston is in the imperial palace cavity of cylinder body, and fluid can flow on the right side of piston by large annular pass, and valve buffer is in servo-actuated working state, realizes quick closedown; Valve closing latter stage, flap is in the adjacent domain of valve seat, and fluid is flowed by damping hole, and produces corresponding damping, plays buffer function, and valve buffer is in buffering working state, and valve realizes buffering and closes; At the valve opening initial stage, fluid flows on the left of piston by one-way valve and damping hole, and valve buffer is in servo-actuated working state, can realize quick unlatching; In the valve opening later stage, flap is away from the adjacent domain of valve seat, and fluid flows on the left of piston by large annular pass, and valve buffer is in servo-actuated working state, can realize quick unlatching.

Description

Valve buffer
Technical field
The present invention relates to a kind of hydraulic bjuffer, especially a kind of valve buffer.
Background technique
At present, Cemented filling is widely used in electric power, oil, chemical industry, iron and steel and other field, and the medium of Cemented filling comprises liquids and gases etc.Inevitably need to use valve in Cemented filling, valve is from opening state, progressively close, the medium originally flowed in the duct can progressively slow down, until stop flowing, if the closing velocity of valve is too fast, on the one hand, the synergy of kinetic energy and hydraulic power etc. that the too fast movement velocity of flap possesses, flap can produce larger impact force to valve seat, valve is caused easily to damage, affect the working life of valve, on the other hand, the originally medium of flowing fast, unexpected stopping, it kinetic energy possessed can produce too high pressure to pipeline and equipment, produce water hammer or gas hammer phenomenon, cause the damage of pipeline breaking and equipment.So we wish the latter stage at valve closing, flap can be made slowly close to valve seat, playing the effect of slowly closing, avoiding because impacting the pipeline breaking and device damage that cause, simultaneously, can ensure that again flap is when the adjacent domain away from valve seat, realizes the quick closedown of valve; When valve opening, valve buffer does not produce damping function, and valve can be opened fast.Therefore, a kind of brand-new valve buffer must be developed for above-mentioned requirements.
Summary of the invention
The object of the present invention is to provide a kind of valve buffer, in the latter stage of valve closing, make flap slowly close to valve seat, play the effect of slowly closing, avoid because impacting the pipeline breaking and device damage that cause, meanwhile, can ensure that again flap is in the adjacent domain away from valve seat, realizes the quick closedown of valve; When valve opening, valve buffer does not produce damping function, and valve can be opened fast.This valve buffer is specially adapted to large-scale safety check.
In order to achieve the above object, main technical content of the present invention is as follows:
A kind of valve buffer, comprises left plunger (1), connecting sleeve (2), left piston bar (4), left end cap (5), cylinder body (6), piston (8), right end cap (11), right piston rod (12), right plunger (13), screw plug (15), damping hole (16), one-way valve (19); Have little inner chamber body (7) and imperial palace cavity (10) in described cylinder body (6), the left part of described cylinder body (6) is connected with left end cap (5); The right part of described cylinder body (6) is connected with right end cap (11); Described piston (8) is arranged on the inside of cylinder body (6), and the left part of described piston (8) is connected with the right-hand member of left piston bar (4), and the right part of described piston (8) is connected with the left end of right piston rod (12); Screw plug (15) is installed in described piston (8), damping hole (16) is offered in described screw plug (15), the left connection road (14) that passes on left of described damping hole (16) is connected with piston (8) left side oil pocket, the right side of described damping hole (16) is connected with piston (8) right side oil pocket by right access (17), and described piston (8) left side oil pocket is connected by left connection road (14), damping hole (16), right access (17) with piston (8) right side oil pocket; Be provided with one-way valve (19) in described piston (8), the oil outlet of described one-way valve (19) is connected by the oil pocket of left connection road with piston (8) left side, and the filler opening of one-way valve (19) is connected by the oil pocket of right access with piston (8) right side; The cylindrical outer wall of described piston (8) is provided with seal ring (20); The left end of described left piston bar (4) is passed from left end cap (5) by the little inner chamber body (7) of cylinder body (6), and stretches in connecting sleeve inner chamber (3); The right-hand member of described right piston rod (12) is passed from right end cap (11) by the imperial palace cavity (10) of cylinder body (6); The right-hand member of described connecting sleeve (2) is connected with the left part of left end cap (5), and the left end of described connecting sleeve (2) is connected with left plunger (1); The right-hand member of described right piston rod (12) is connected with right plunger (13).
When above-mentioned piston (8) is mobile in the imperial palace cavity (10) of cylinder body (6), large annular pass (18) is formed between the cylindrical outer wall of piston (8) and imperial palace cavity (10) inwall of cylinder body (6), the fluid of described piston (8) left and right sides can by large annular pass (18) free-flow each other, and valve buffer is in servo-actuated working state; When described piston (8) is mobile in the little inner chamber body (7) of cylinder body (6), formed between the cylindrical outer wall of piston (8) and little inner chamber body (7) inwall of cylinder body (6) and coordinate, and form sealing by seal ring (20), the fluid in piston (8) left side can only pass through left connection road (14), damping hole (16), right access (17) flow on the right side of piston (8), and produce corresponding damping, play buffer function, valve buffer is in buffering working state; When piston (8) is in the little inner chamber body (7) of cylinder body (6), and move from the little inner chamber body (7) of cylinder body (6) to imperial palace cavity (10) direction, on the one hand, the left side that fluid can pass through right access (17), damping hole (16), left connection road (14) flow to piston (8) on piston (8) right side, on the other hand, the fluid on piston (8) right side can also flow to the left side of piston (8) by the left connection road of the right access of one-way valve (19), one-way valve (19), one-way valve (19), and valve buffer is in servo-actuated working state.
(6) are provided with oil hole to above-mentioned cylinder body, and valve buffer can pass through oil hole oiling, and the oil hole on described cylinder body (6) is sealed by plug (9) and Sealing after valve buffer completes oiling.
Between the left part of above-mentioned cylinder body (6) and left end cap (5), seal arrangement is installed, between the right part of described cylinder body (6) and right end cap (11), seal arrangement is installed.
Be provided with between above-mentioned left piston bar (4) and left end cap (5) dust-proof, sealing, guiding device, be provided with between described right piston rod (12) and right end cap (11) dust-proof, seal, guiding device.
Above-mentioned left plunger (1) has left pin-and-hole (21), described right plunger (13) has right pin-and-hole (22).
By technique scheme, the present invention at least has following advantages:
When valve opening or closedown, flap rotates, and realizes swinging by bearing pin drivening rod, and connecting rod produces the movement relative to cylinder body by right plunger, right piston rod driven plunger in cylinder body; At the valve closing initial stage, flap is away from the adjacent domain of valve seat, and piston is in the imperial palace cavity of cylinder body, and fluid can flow on the right side of piston by large annular pass, and valve buffer is in servo-actuated working state, can realize quick closedown; Valve closing latter stage, flap is in the adjacent domain of valve seat, and fluid is flowed by damping hole, and produces corresponding damping, plays buffer function, and valve buffer is in buffering working state, and valve realizes buffering and closes; At the valve opening initial stage, fluid flows on the left of piston by one-way valve and damping hole, and valve buffer is in servo-actuated working state, can realize quick unlatching; In the valve opening later stage, flap is away from the adjacent domain of valve seat, and fluid flows on the left of piston by large annular pass, and valve buffer is in servo-actuated working state, can realize quick unlatching.
Use the present invention, the valve closing initial stage, valve, in the process of opening or close, can realize different working methods, at the valve closing initial stage, realize quick closedown; Valve closing latter stage, realize buffering and close, play buffer function, avoid valve to produce water hammer or gas hammer phenomenon in the process of opening or close, cause the damage of pipeline breaking and equipment.Meanwhile, valve can also realize quick unlatching.Above-mentioned valve buffer is specially adapted to large-scale safety check.
The specific embodiment of the present invention is provided in detail by following examples and accompanying drawing thereof.
Accompanying drawing explanation
Structural representation when Fig. 1 is the present invention's servo-actuated working state;
Fig. 2 is the structural representation of the present invention when cushioning working state.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.
As shown in Figure 1 and Figure 2, a kind of valve buffer, comprises left plunger 1, connecting sleeve 2, left piston bar 4, left end cap 5, cylinder body 6, piston 8, right end cap 11, right piston rod 12, right plunger 13, screw plug 15, damping hole 16, one-way valve 19; Have little inner chamber body 7 and imperial palace cavity 10 in cylinder body 6, the left part of cylinder body 6 is connected with left end cap 5, and the right part of cylinder body 6 is connected with right end cap 11; Piston 8 is arranged on the inside of cylinder body 6, and the left part of piston 8 is connected with the right-hand member of left piston bar 4, and the right part of piston 8 is connected with the left end of right piston rod 12; Screw plug 15 is installed in piston 8, damping hole 16 is offered in screw plug 15, the left connection road 14 that passes on left of damping hole 16 is connected with oil pocket on the left of piston 8, the right side of damping hole 16 is connected with oil pocket on the right side of piston 8 by right access 17, and on the left of piston 8, oil pocket is connected by left connection road 14, damping hole 16, right access 17 with oil pocket on the right side of piston 8; Be provided with one-way valve 19 in piston 8, the oil outlet of one-way valve 19 is connected with the oil pocket on the left of piston 8 by left connection road, and the filler opening of one-way valve 19 is connected with the oil pocket on the right side of piston 8 by right access; The cylindrical outer wall of piston 8 is provided with seal ring 20; The left end of left piston bar 4 is passed from left end cap 5 by the little inner chamber body 7 of cylinder body 6, and stretches in connecting sleeve inner chamber 3; The right-hand member of right piston rod 12 is passed from right end cap 11 by the imperial palace cavity 10 of cylinder body 6, is provided with the devices such as dust-proof, sealing, guiding between right piston rod 12 and right end cap 11; The right-hand member of connecting sleeve 2 is connected with the left part of left end cap 5, and the left end of connecting sleeve 2 is connected with left plunger 1; The right-hand member of right piston rod 12 is connected with right plunger 13.
When piston 8 is mobile in the imperial palace cavity 10 of cylinder body 6, large annular pass 18 is formed between the cylindrical outer wall of piston 8 and imperial palace cavity 10 inwall of cylinder body 6, the fluid of described piston 8 left and right sides can by the free-flow each other of large annular pass 18, and valve buffer is in servo-actuated working state; When piston 8 is mobile in the little inner chamber body 7 of cylinder body 6, formed between the cylindrical outer wall of piston 8 and little inner chamber body 7 inwall of cylinder body 6 and coordinate, and form sealing by seal ring 20, fluid on the left of piston 8 can only flow on the right side of piston 8 by left connection road 14, damping hole 16, right access 17, and produce corresponding damping, play buffer function, valve buffer is in buffering working state; When piston 8 is in the little inner chamber body 7 of cylinder body 6, and move from the little inner chamber body 7 of cylinder body 6 to imperial palace cavity 10 direction, on the one hand, fluid on the right side of piston 8 can flow to the left side of piston 8 by right access 17, damping hole 16, left connection road 14, on the other hand, fluid on the right side of piston 8 can also flow to the left side of piston 8 by the left connection road of the right access of one-way valve 19, one-way valve 19, one-way valve 19, valve buffer is in servo-actuated working state.
Preferably, above-mentioned cylinder body 6 is provided with oil hole, valve buffer can pass through oil hole oiling, and the oil hole on cylinder body 6 is sealed by plug 9 and Sealing after valve buffer completes oiling.
Preferably, between the left part of above-mentioned cylinder body 6 and left end cap 5, seal arrangement is installed, between the right part of cylinder body 6 and right end cap 11, seal arrangement is installed.
Preferably, the devices such as dust-proof, sealing, guiding are installed between above-mentioned left piston bar 4 and left end cap 5, the devices such as dust-proof, sealing, guiding are installed between right piston rod 12 and right end cap 11.
Preferably, left plunger 1 has left pin-and-hole 21, right plunger 13 has right pin-and-hole 22.
When valve opening or closedown, flap rotates, and realizes swinging by bearing pin drivening rod, and connecting rod produces the movement relative to cylinder body by right plunger 13, right piston rod 12 driven plunger 8 in cylinder body; At the valve closing initial stage, flap is away from the adjacent domain of valve seat, and piston 8 is in the imperial palace cavity 10 of cylinder body, and fluid can flow on the right side of piston 8 by large annular pass 18, and valve buffer is in servo-actuated working state, can realize quick closedown; Valve closing latter stage, flap is in the adjacent domain of valve seat, and fluid is flowed by damping hole 16, and produces corresponding damping, plays buffer function, and valve buffer is in buffering working state, and valve realizes buffering and closes; At the valve opening initial stage, fluid flows on the left of piston 8 by one-way valve 19 and damping hole 16, and valve buffer is in servo-actuated working state, can realize quick unlatching; In the valve opening later stage, flap is away from the adjacent domain of valve seat, and fluid flows on the left of piston 8 by large annular pass 18, and valve buffer is in servo-actuated working state, can realize quick unlatching.
Use the present invention, the valve closing initial stage, valve, in the process of opening or close, can realize different working methods, at the valve closing initial stage, realize quick closedown; Valve closing latter stage, realize buffering and close, play buffer function, avoid valve to produce water hammer or gas hammer phenomenon in the process of opening or close, cause the damage of pipeline breaking and equipment.Meanwhile, valve can also realize quick unlatching.Above-mentioned valve buffer is specially adapted to large-scale safety check.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.

Claims (5)

1. a valve buffer, is characterized in that: comprise left plunger (1), connecting sleeve (2), left piston bar (4), left end cap (5), cylinder body (6), piston (8), right end cap (11), right piston rod (12), right plunger (13), screw plug (15), damping hole (16), one-way valve (19), have little inner chamber body (7) and imperial palace cavity (10) in described cylinder body (6), little inner chamber body (7) is directly connected with imperial palace cavity (10), and the left part of described cylinder body (6) is connected with left end cap (5), the right part of described cylinder body (6) is connected with right end cap (11), described piston (8) is arranged on the inside of cylinder body (6), the left part of described piston (8) is connected with the right-hand member of left piston bar (4), the right part of described piston (8) is connected with the left end of right piston rod (12), screw plug (15) is installed in described piston (8), damping hole (16) is offered in described screw plug (15), the left connection road (14) that passes on left of described damping hole (16) is connected with piston (8) left side oil pocket, the right side of described damping hole (16) is connected with piston (8) right side oil pocket by right access (17), described piston (8) left side oil pocket and piston (8) right side oil pocket are by left connection road (14), damping hole (16), right access (17) is connected, be provided with one-way valve (19) in described piston (8), the oil outlet of described one-way valve (19) is connected by the oil pocket of left connection road with piston (8) left side, and the filler opening of one-way valve (19) is connected by the oil pocket of right access with piston (8) right side, the cylindrical outer wall of described piston (8) is provided with seal ring (20), the left end of described left piston bar (4) is passed from left end cap (5) by the little inner chamber body (7) of cylinder body (6), and stretches in connecting sleeve inner chamber (3), the right-hand member of described right piston rod (12) is passed from right end cap (11) by the imperial palace cavity (10) of cylinder body (6), the right-hand member of described connecting sleeve (2) is connected with the left part of left end cap (5), and the left end of described connecting sleeve (2) is connected with left plunger (1), the right-hand member of described right piston rod (12) is connected with right plunger (13).
2. valve buffer according to claim 1, it is characterized in that: when described piston (8) is mobile in the imperial palace cavity (10) of cylinder body (6), large annular pass (18) is formed between the cylindrical outer wall of piston (8) and imperial palace cavity (10) inwall of cylinder body (6), the fluid of described piston (8) left and right sides can by large annular pass (18) free-flow each other, and valve buffer is in servo-actuated working state; Described piston (8) (7) when moving towards the direction deviating from imperial palace cavity (10) in the little inner chamber body of cylinder body (6), formed between the cylindrical outer wall of piston (8) and little inner chamber body (7) inwall of cylinder body (6) and coordinate, and form sealing by seal ring (20), the fluid in piston (8) left side can only pass through left connection road (14), damping hole (16), right access (17) flow on the right side of piston (8), and produce corresponding damping, play buffer function, valve buffer is in buffering working state; When piston (8) is in the little inner chamber body (7) of cylinder body (6), and move from the little inner chamber body (7) of cylinder body (6) to imperial palace cavity (10) direction, on the one hand, the left side that fluid can pass through right access (17), damping hole (16), left connection road (14) flow to piston (8) on piston (8) right side, on the other hand, the fluid on piston (8) right side can also flow to the left side of piston (8) by the left connection road of the right access of one-way valve (19), one-way valve (19), one-way valve (19), and valve buffer is in servo-actuated working state.
3. valve buffer according to claim 1, it is characterized in that: (6) are provided with oil hole to described cylinder body, valve buffer can pass through oil hole oiling, and the oil hole on described cylinder body (6) is sealed by plug (9) and Sealing after valve buffer completes oiling.
4. valve buffer according to claim 1, is characterized in that: be provided with seal arrangement between the left part of described cylinder body (6) and left end cap (5), is provided with seal arrangement between the right part of described cylinder body (6) and right end cap (11).
5. valve buffer according to claim 1, is characterized in that: described left plunger (1) has left pin-and-hole (21), and described right plunger (13) has right pin-and-hole (22).
CN201310034712.0A 2013-01-29 2013-01-29 Valve buffer Expired - Fee Related CN103292028B (en)

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CN103292028B true CN103292028B (en) 2015-12-23

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109027098B (en) * 2018-08-31 2020-05-12 温州临界科技有限公司 Hydraulic positioning buffer
CN111021988A (en) * 2020-01-03 2020-04-17 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 Control device for drilling string and application

Citations (5)

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Publication number Priority date Publication date Assignee Title
GB1581198A (en) * 1978-05-30 1980-12-10 Ti James Gibbons Ltd Hydraulic check
CN2426930Y (en) * 2000-03-17 2001-04-18 东南大学 Engineering structure damping fluid bumper
CN1605785A (en) * 2004-10-26 2005-04-13 大众阀门有限公司 Two speed hydraulic cylinder for valve
CN101022058A (en) * 2006-02-28 2007-08-22 浙江开关厂有限公司 Gradual damping oil buffer
CN202629289U (en) * 2012-07-09 2012-12-26 重庆山能仪表有限公司 Double-cylinder executing mechanism of regulating valve

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Publication number Priority date Publication date Assignee Title
JP2003269520A (en) * 2002-03-13 2003-09-25 Kurimoto Ltd Shock absorber for valve

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1581198A (en) * 1978-05-30 1980-12-10 Ti James Gibbons Ltd Hydraulic check
CN2426930Y (en) * 2000-03-17 2001-04-18 东南大学 Engineering structure damping fluid bumper
CN1605785A (en) * 2004-10-26 2005-04-13 大众阀门有限公司 Two speed hydraulic cylinder for valve
CN101022058A (en) * 2006-02-28 2007-08-22 浙江开关厂有限公司 Gradual damping oil buffer
CN202629289U (en) * 2012-07-09 2012-12-26 重庆山能仪表有限公司 Double-cylinder executing mechanism of regulating valve

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Granted publication date: 20151223

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