CN103292027B - Valve buffer - Google Patents
Valve buffer Download PDFInfo
- Publication number
- CN103292027B CN103292027B CN201310033806.6A CN201310033806A CN103292027B CN 103292027 B CN103292027 B CN 103292027B CN 201310033806 A CN201310033806 A CN 201310033806A CN 103292027 B CN103292027 B CN 103292027B
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- piston
- cylinder body
- valve
- end cap
- flap
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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, and connecting rod driven plunger produces relative movement in cylinder body; In the initial stage of valve closing and the latter stage of unlatching, flap is away from the adjacent domain of valve seat, piston moves in the imperial palace cavity of cylinder body, the fluid of piston left and right sides can by the mutual free-flow in large annular pass formed between cylindrical outer wall and imperial palace cavity inner wall, flap moves freely under the effect of external force, realizes the quick opening and closing of valve; At the latter stage of valve closing and the initial stage of unlatching, flap is in the adjacent domain of valve seat, piston moves in the little inner chamber body of cylinder body, the fluid of piston left and right sides can be flowed each other by damping hole and piston and cylinder gap, and produce corresponding damping, flap can be made slowly to leave or close to valve seat, play buffer function, flap slowly being left or close to valve seat.
Description
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 closed condition, progressively open, ducted fed sheet of a media will by valve to dirty motion, if the opening speed of valve is too fast, be rapidly to flows downstream by the medium of valve, be easy to produce water hammer or gas hammer phenomenon, cause the damage of pipeline breaking and equipment, equally, 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, water hammer or gas hammer phenomenon can be produced equally, cause the damage of pipeline breaking and equipment.So, we wish the initial stage of latter stage at valve closing and unlatching, flap is in the adjacent domain of valve seat, flap can be made slowly to leave or close to valve seat, play the effect of slowly unlatching or 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 opening and closing of valve, 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, at the latter stage of valve closing and the initial stage of unlatching, flap is in the adjacent domain of valve seat, flap can be made slowly to leave or close to valve seat, playing the effect of slowly unlatching or slowly closing, avoiding because impacting the pipeline breaking and device damage that cause, simultaneously, can ensure that again flap is in the adjacent domain away from valve seat, realizes the quick opening and closing of valve.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); 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 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 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; 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, the fluid of described piston (8) left and right sides can pass through left connection road (14), damping hole (16), right access (17) and the outer wall of piston (8) and the inwall of little inner chamber body (7) gap flow each other, and produce corresponding damping, play buffer function, valve buffer is in buffering 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 (19), described right plunger (13) has right pin-and-hole (20).
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; In the initial stage of valve closing and the latter stage of unlatching, flap is away from the adjacent domain of valve seat, piston moves in the imperial palace cavity of cylinder body, large annular pass is formed between the cylindrical outer wall of piston and the imperial palace cavity inner wall of cylinder body, the fluid of piston left and right sides can by the mutual free-flow in large annular pass, flap moves freely under the effect of external force, and realize the quick opening and closing of valve, valve buffer is in servo-actuated working state; At the latter stage of valve closing and the initial stage of unlatching, flap is in the adjacent domain of valve seat, piston moves in the little inner chamber body of cylinder body, formed between piston with cylinder body and coordinate, the fluid of piston left and right sides can be flowed each other by damping hole and piston and cylinder gap, and produces corresponding damping, plays buffer function, flap is slowly left or close to valve seat, valve buffer is in buffering working state.
Use the present invention, valve, in the process of opening or close, can realize different working methods.Flap is away from the adjacent domain of valve seat, and valve buffer is in servo-actuated working state, does not have an impact to the movement velocity of flap, and valve realizes opening and closing fast; Flap is in the adjacent domain of valve seat, fluid flowing in valve buffer produces damping, flap is slowly left or close to valve seat, play buffer function, valve realizes slowly opening and closing, 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.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; 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; 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, the fluid of piston 8 left and right sides can be flowed each other by the gap of left connection road 14, damping hole 16, right access 17 and the outer wall of piston 8 and the inwall of little inner chamber body 7, and produce corresponding damping, play buffer function, valve buffer is in buffering 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 19, right plunger 13 has right pin-and-hole 20.
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; In the initial stage of valve closing and the latter stage of unlatching, flap is away from the adjacent domain of valve seat, piston 8 is mobile in the imperial palace cavity 10 of cylinder body, large annular pass 18 is formed between the cylindrical outer wall of piston 8 and imperial palace cavity 10 inwall of cylinder body, the fluid of piston 8 left and right sides can by the free-flow each other of large annular pass 18, flap moves freely under the effect of external force, and realize the quick opening and closing of valve, valve buffer is in servo-actuated working state; At the latter stage of valve closing and the initial stage of unlatching, flap is in the adjacent domain of valve seat, piston 8 is mobile in the little inner chamber body 7 of cylinder body, formed between piston with cylinder body and coordinate, the fluid of piston 8 left and right sides can be flowed with cylinder gap each other by damping hole 16 and piston 8, and produces corresponding damping, plays buffer function, flap is slowly left or close to valve seat, valve buffer is in buffering working state.
Use the present invention, valve, in the process of opening or close, can realize different working methods.Flap is away from the adjacent domain of valve seat, and valve buffer is in servo-actuated working state, does not have an impact to the movement velocity of flap, and valve realizes opening and closing fast; Flap is in the adjacent domain of valve seat, fluid flowing in valve buffer produces damping, flap is slowly left or close to valve seat, play buffer function, valve realizes slowly opening and closing, 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.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), 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), 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), the cylindrical outer wall of described piston (8) does not arrange seal ring, screw plug (15) is installed in described piston (8), damping hole (16) is offered in 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 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, 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. according to the valve buffer described in 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; 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, the fluid of described piston (8) left and right sides can pass through left connection road (14), damping hole (16), right access (17) and the outer wall of piston (8) and the inwall of little inner chamber body (7) gap flow each other, and produce corresponding damping, play buffer function, valve buffer is in buffering working state.
3. according to the valve buffer described in 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. according to the valve buffer described in claim 1, it is characterized in that: between the left part of described 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.
5. according to the valve buffer described in claim 1, it is characterized in that: described left plunger (1) has left pin-and-hole (19), described right plunger (13) has right pin-and-hole (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033806.6A CN103292027B (en) | 2013-01-29 | 2013-01-29 | Valve buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310033806.6A CN103292027B (en) | 2013-01-29 | 2013-01-29 | Valve buffer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103292027A CN103292027A (en) | 2013-09-11 |
| CN103292027B true CN103292027B (en) | 2015-09-02 |
Family
ID=49093364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310033806.6A Expired - Fee Related CN103292027B (en) | 2013-01-29 | 2013-01-29 | Valve buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103292027B (en) |
Citations (6)
| 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 |
| CN201396390Y (en) * | 2009-05-13 | 2010-02-03 | 东南大学 | Stiction damper with adjustable damping force |
| CN201772072U (en) * | 2010-08-19 | 2011-03-23 | 江阴市普泰隆阀业有限公司 | Pneumatic integrated feeding control valve for reduction furnace |
| 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 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438475A (en) * | 1977-08-30 | 1979-03-23 | Nippon Telegr & Teleph Corp <Ntt> | Damper |
| JP2003269520A (en) * | 2002-03-13 | 2003-09-25 | Kurimoto Ltd | Shock absorber for valve |
| JP2003278820A (en) * | 2002-03-27 | 2003-10-02 | Tokico Ltd | Damper |
| JP2006064098A (en) * | 2004-08-27 | 2006-03-09 | Kayaba Ind Co Ltd | Front fork |
-
2013
- 2013-01-29 CN CN201310033806.6A patent/CN103292027B/en not_active Expired - Fee Related
Patent Citations (6)
| 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 |
| CN201396390Y (en) * | 2009-05-13 | 2010-02-03 | 东南大学 | Stiction damper with adjustable damping force |
| CN201772072U (en) * | 2010-08-19 | 2011-03-23 | 江阴市普泰隆阀业有限公司 | Pneumatic integrated feeding control valve for reduction furnace |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103292027A (en) | 2013-09-11 |
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Granted publication date: 20150902 Termination date: 20180129 |