CN103267168A - Valve buffer - Google Patents
Valve buffer Download PDFInfo
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- CN103267168A CN103267168A CN201310034714XA CN201310034714A CN103267168A CN 103267168 A CN103267168 A CN 103267168A CN 201310034714X A CN201310034714X A CN 201310034714XA CN 201310034714 A CN201310034714 A CN 201310034714A CN 103267168 A CN103267168 A CN 103267168A
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Abstract
The invention relates to a valve buffer. By the valve buffer, when a valve is opened or closed, a valve clack rotates to drive a connecting rod to swing, and the connecting rod drives a piston to relatively move in a cylinder; in the initial stage of closing the valve, the valve clack is far away from an adjacent area of a valve seat, the piston moves in a large inner cavity of the cylinder, and when the piston moves left, oil on the right side can flow to the right side and the valve is quickly closed; in the terminal stage of closing the valve, the valve clack is positioned in the adjacent area of the valve seat, oil flows through a damping hole and generates a corresponding damping effect to realize the buffer function, the valve buffer is in a buffer working state, and the valve is slowly closed; in the initial stage of opening the valve, the oil flows to the left side of the piston through a one-way valve and the damping hole, the valve buffer is in a follow-up working state, and the valve can be quickly opened; and in the terminal stage of opening the valve, the valve clack is far away from the adjacent area of the valve seat, the oil flows to the left side of the piston through a large annular channel, the valve buffer is in the follow-up working state, and the valve can be quickly opened.
Description
Technical field
The present invention relates to a kind of hydraulic bjuffer, especially a kind of valve buffer.
Background technique
At present, pipeline is carried and is widely used in electric power, oil, chemical industry, iron and steel and other fields, and the medium that pipeline is carried comprises liquids and gases etc.In carrying, pipeline inevitably need use valve, valve is from opening state, progressively close, originally the medium that flows in pipeline can progressively slow down, flow until stopping, if the closing velocity of valve is too fast, on the one hand, the synergy of the kinetic energy that the too fast movement velocity of flap possesses and the power of surging etc., flap can produce bigger impact force to valve seat, causes valve to damage easily, influences the working life of valve, on the other hand, originally the medium that flows fast stops suddenly, and it kinetic energy that possesses 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, can make flap slowly near valve seat, play the effect of slowly closing, avoid the pipeline breaking and the device damage that cause because of impact, simultaneously, can guarantee that again flap away from the adjacent domain of valve seat the time, realizes the quick closedown of valve; The valve buffer does not produce damping function when valve opening, and valve can be opened fast.Therefore, must develop a kind of brand-new valve buffer at 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 near valve seat, play the effect of slowly closing, avoid the pipeline breaking and the device damage that cause because of impact, simultaneously, can guarantee flap again in the adjacent domain away from valve seat, realize the quick closedown of valve; The valve buffer does not produce damping function when valve opening, and valve can be opened fast.This valve buffer is specially adapted to large-scale safety check.
In order to achieve the above object, major technique of the present invention thes contents are as follows:
A kind of valve buffer comprises a left side pin head (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 pin head (13), screw plug (15), damping hole (16), one-way valve (19); Have little inner chamber body (7) and big inner chamber body (10) in the 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 installed in 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 the described piston (8), offer damping hole (16) in the 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; One-way valve (19) is installed in the described piston (8), and 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 left end of described left piston bar (4) passes from left end cap (5) by the little inner chamber body (7) of cylinder body (6), and stretches in the connecting sleeve inner chamber (3); The right-hand member of described right piston rod (12) passes from right end cap (11) by the big inner chamber body (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 side pin head (1); The right-hand member of described right piston rod (12) is connected with right pin head (13).
When above-mentioned piston (8) is mobile in the big inner chamber body (10) of cylinder body (6), form big annular pass (18) between big inner chamber body (10) inwall of the cylindrical outer wall of piston (8) and cylinder body (6), the fluid of described piston (8) left and right sides can be by big annular pass (18) free-flow each other, and the 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), form between little inner chamber body (7) inwall of the cylindrical outer wall of piston (8) and cylinder body (6) and cooperate, the gap of the outer wall that the fluid in described piston (8) left side can be by left connection road (14), damping hole (16), right access (17) and piston (8) and the inwall of little inner chamber body (7) flows to piston (8) right side, and produce corresponding damping, play buffer function, the valve buffer is in the buffering working state; In the little inner chamber body (7) of piston (8) at cylinder body (6), and move to big inner chamber body (10) direction from the little inner chamber body (7) of cylinder body (6), on the one hand, the fluid on piston (8) right side can pass through right access (17), damping hole (16), the gap of the inwall of the outer wall of left connection road (14) and piston (8) and little inner chamber body (7) flows to the left side of piston (8), on the other hand, the fluid on piston (8) right side can also pass through the right access of one-way valve (19), one-way valve (19), the left connection road of one-way valve (19) flows to the left side of piston (8), and the valve buffer is in servo-actuated working state.
Above-mentioned cylinder body (6) is provided with oil hole, and the valve buffer can pass through the oil hole oiling, and the oil hole on the described cylinder body (6) seals by plug (9) and Sealing after the valve buffer is finished oiling.
Between the left part of above-mentioned cylinder body (6) and the left end cap (5) seal arrangement is installed, between the right part of described cylinder body (6) and the right end cap (11) seal arrangement is installed.
Dustproof, sealing, guiding device are installed between above-mentioned left piston bar (4) and the left end cap (5), dustproof, sealing, guiding device are installed between described right piston rod (12) and the right end cap (11).
Have left pin-and-hole (20) on the above-mentioned left side pin head (1), have right pin-and-hole (21) on the described right pin head (13).
By technique scheme, the present invention has following advantage at least:
Valve opening or when closing, flap rotates, and realize swing by the bearing pin drivening rod, connecting rod produces the movement with respect to cylinder body by right pin head, 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 big inner chamber body of cylinder body, and fluid can flow to the piston right side by big annular pass, and the 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 flows by damping hole, and produces corresponding damping, plays buffer function, and the valve buffer is in the buffering working state, and valve realizes that buffering closes; At the valve opening initial stage, fluid flows to the piston left side by one-way valve and damping hole, and the 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 to the piston left side by big annular pass, and the valve buffer is in servo-actuated working state, can realize quick unlatching.
Use the present invention, valve can be realized different working methods in the process of opening or closing, and at the valve closing initial stage, realizes quick closedown; Valve closing latter stage, realize that buffering closes, play buffer function, avoid valve in the process of opening or closing, to produce water hammer or gas hammer phenomenon, cause the damage of pipeline breaking and equipment.Simultaneously, valve can also be realized 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.
Description of drawings
The structural representation of Fig. 1 during for the servo-actuated working state of the present invention;
Structural representation when Fig. 2 cushions working state for the present invention.
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
As shown in Figure 1 and Figure 2, a kind of valve buffer comprises left side pin 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 pin 13, screw plug 15, damping hole 16, one-way valve 19; Have little inner chamber body 7 and big inner chamber body 10 in the 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 installed in 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 the piston 8, offer damping hole 16 in the screw plug 15, the left connection road 14 that passes on left of damping hole 16 is connected with piston 8 left side oil pockets, the right side of damping hole 16 is connected with piston 8 right side oil pockets by right access 17, and piston 8 left side oil pockets are connected by left connection road 14, damping hole 16, right access 17 with piston 8 right side oil pockets; One-way valve 19 is installed in the piston 8, and the oil outlet of one-way valve 19 is connected by the oil pocket of left connection road with piston 8 left sides, and the filler opening of one-way valve 19 is connected by the oil pocket of right access with piston 8 right sides; The left end of left piston bar 4 passes from left end cap 5 by the little inner chamber body 7 of cylinder body 6, and stretches in the connecting sleeve inner chamber 3; The right-hand member of right piston rod 12 passes from right end cap 11 by the big inner chamber body 10 of cylinder body 6, and devices such as dustproof, sealing, guiding are installed between right piston rod 12 and the 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 and left side pin 1 is connected; The right-hand member of right piston rod 12 is sold 13 and is connected with right.
When piston 8 is mobile in the big inner chamber body 10 of cylinder body 6, form big annular pass 18 between big inner chamber body 10 inwalls of the cylindrical outer wall of piston 8 and cylinder body 6, the fluid of described piston 8 left and right sides can be by the 18 mutual free-flows of big annular pass, and the valve buffer is in servo-actuated working state; When piston 8 is mobile in the little inner chamber body 7 of cylinder body 6, form between little inner chamber body 7 inwalls of the cylindrical outer wall of piston 8 and cylinder body 6 and cooperate, the gap of the outer wall that the fluid in piston 8 left sides can be by left connection road 14, damping hole 16, right access 17 and piston 8 and the inwall of little inner chamber body 7 flows to piston 8 right sides, and produce corresponding damping, play buffer function, the valve buffer is in the buffering working state; In the little inner chamber body 7 of piston 8 at cylinder body 6, and move to big inner chamber body 10 directions from the little inner chamber body 7 of cylinder body 6, on the one hand, the gap of the outer wall that the fluid on piston 8 right sides can be by right access 17, damping hole 16, left connection road 14 and piston 8 and the inwall of little inner chamber body 7 flows to the left side of piston 8, on the other hand, the fluid on piston 8 right sides can also be by one-way valve 19 right access, one-way valve 19, the left connection road of one-way valve 19 flow to the left side of piston 8, the valve buffer is in servo-actuated working state.
As preferred version, above-mentioned cylinder body 6 is provided with oil hole, and the valve buffer can pass through the oil hole oiling, and the oil hole on the cylinder body 6 seals by plug 9 and Sealing after the valve buffer is finished oiling.
As preferred version, between the left part of above-mentioned cylinder body 6 and the left end cap 5 seal arrangement is installed, between the right part of cylinder body 6 and the right end cap 11 seal arrangement is installed.
As preferred version, devices such as dustproof, sealing, guiding are installed between above-mentioned left piston bar 4 and the left end cap 5, devices such as dustproof, sealing, guiding are installed between right piston rod 12 and the right end cap 11.
As preferred version, have left pin-and-hole 20 on the left side pin 1, have right pin-and-hole 21 on the right pin 13.
Valve opening or when closing, flap rotates, and realize swing by the bearing pin drivening rod, connecting rod produces the movement with respect to cylinder body by right pin 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 big inner chamber body 10 of cylinder body, and fluid can flow to piston 8 right sides by big annular pass 18, and the 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 flows by damping hole 16, and produces corresponding damping, plays buffer function, and the valve buffer is in the buffering working state, and valve realizes that buffering closes; At the valve opening initial stage, fluid flows to piston 8 left sides by one-way valve 19 and damping hole 16, and the 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 to the piston left side by big annular pass 18, and the valve buffer is in servo-actuated working state, can realize quick unlatching.
Use the present invention, valve can be realized different working methods in the process of opening or closing, and at the valve closing initial stage, realizes quick closedown; Valve closing latter stage, realize that buffering closes, play buffer function, avoid valve in the process of opening or closing, to produce water hammer or gas hammer phenomenon, cause the damage of pipeline breaking and equipment.Simultaneously, valve can also be realized quick unlatching.Above-mentioned valve buffer is specially adapted to large-scale safety check.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, any simple modification that foundation 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 (6)
1. a valve buffer is characterized in that: comprise a left side pin head (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 pin head (13), screw plug (15), damping hole (16), one-way valve (19); Have little inner chamber body (7) and big inner chamber body (10) in the 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 installed in 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 the described piston (8), offer damping hole (16) in the 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; One-way valve (19) is installed in the described piston (8), and 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 left end of described left piston bar (4) passes from left end cap (5) by the little inner chamber body (7) of cylinder body (6), and stretches in the connecting sleeve inner chamber (3); The right-hand member of described right piston rod (12) passes from right end cap (11) by the big inner chamber body (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 side pin head (1); The right-hand member of described right piston rod (12) is connected with right pin head (13).
2. valve buffer according to claim 1, it is characterized in that: when described piston (8) is mobile in the big inner chamber body (10) of cylinder body (6), form big annular pass (18) between big inner chamber body (10) inwall of the cylindrical outer wall of piston (8) and cylinder body (6), the fluid of described piston (8) left and right sides can be by big annular pass (18) free-flow each other, and the 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), form between little inner chamber body (7) inwall of the cylindrical outer wall of piston (8) and cylinder body (6) and cooperate, the gap of the outer wall that the fluid in described piston (8) left side can be by left connection road (14), damping hole (16), right access (17) and piston (8) and the inwall of little inner chamber body (7) flows to piston (8) right side, and produce corresponding damping, play buffer function, the valve buffer is in the buffering working state; In the little inner chamber body (7) of piston (8) at cylinder body (6), and move to big inner chamber body (10) direction from the little inner chamber body (7) of cylinder body (6), on the one hand, the fluid on piston (8) right side can pass through right access (17), damping hole (16), the gap of the inwall of the outer wall of left connection road (14) and piston (8) and little inner chamber body (7) flows to the left side of piston (8), on the other hand, the fluid on piston (8) right side can also pass through the right access of one-way valve (19), one-way valve (19), the left connection road of one-way valve (19) flows to the left side of piston (8), and the valve buffer is in servo-actuated working state.
3. valve buffer according to claim 1, it is characterized in that: described cylinder body (6) is provided with oil hole, the valve buffer can pass through the oil hole oiling, and the oil hole on the described cylinder body (6) seals by plug (9) and Sealing after the valve buffer is finished oiling.
4. valve buffer according to claim 1 is characterized in that: between the left part of described cylinder body (6) and the left end cap (5) seal arrangement is installed, between the right part of described cylinder body (6) and the right end cap (11) seal arrangement is installed.
5. valve buffer according to claim 1, it is characterized in that: dustproof, sealing, guiding device are installed between described left piston bar (4) and the left end cap (5), dustproof, sealing, guiding device are installed between described right piston rod (12) and the right end cap (11).
6. valve buffer according to claim 1 is characterized in that: have left pin-and-hole (20) on the described left side pin head (1), have right pin-and-hole (21) on the described right pin head (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034714.XA CN103267168B (en) | 2013-01-29 | 2013-01-29 | Valve buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310034714.XA CN103267168B (en) | 2013-01-29 | 2013-01-29 | Valve buffer |
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| Publication Number | Publication Date |
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| CN103267168A true CN103267168A (en) | 2013-08-28 |
| CN103267168B CN103267168B (en) | 2015-10-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310034714.XA Expired - Fee Related CN103267168B (en) | 2013-01-29 | 2013-01-29 | Valve buffer |
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| CN (1) | CN103267168B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696419A (en) * | 2015-01-14 | 2015-06-10 | 上海上材减振科技有限公司 | Viscous damper provided with automatic temperature-control pressure relief devices |
| CN106321559A (en) * | 2016-10-20 | 2017-01-11 | 太原重型机械集团工程技术研发有限公司 | Modular hydraulic equipment and protecting device thereof |
| CN107255134A (en) * | 2017-08-16 | 2017-10-17 | 中车青岛四方车辆研究所有限公司 | Viscoelastic medium buffer |
| CN108626296A (en) * | 2018-04-02 | 2018-10-09 | 徐州徐工液压件有限公司 | A kind of one-way damper valve on hydro-pneumatic suspension system |
| CN113446419A (en) * | 2021-06-28 | 2021-09-28 | 中阀科技(长沙)阀门有限公司 | Axial-flow slow-closing check valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438475A (en) * | 1977-08-30 | 1979-03-23 | Nippon Telegr & Teleph Corp <Ntt> | Damper |
| CN2426930Y (en) * | 2000-03-17 | 2001-04-18 | 东南大学 | Engineering structure damping fluid bumper |
| CN101022058A (en) * | 2006-02-28 | 2007-08-22 | 浙江开关厂有限公司 | Gradual damping oil buffer |
| CN201396390Y (en) * | 2009-05-13 | 2010-02-03 | 东南大学 | Stiction damper with adjustable damping force |
-
2013
- 2013-01-29 CN CN201310034714.XA patent/CN103267168B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5438475A (en) * | 1977-08-30 | 1979-03-23 | Nippon Telegr & Teleph Corp <Ntt> | Damper |
| CN2426930Y (en) * | 2000-03-17 | 2001-04-18 | 东南大学 | Engineering structure damping fluid bumper |
| CN101022058A (en) * | 2006-02-28 | 2007-08-22 | 浙江开关厂有限公司 | Gradual damping oil buffer |
| CN201396390Y (en) * | 2009-05-13 | 2010-02-03 | 东南大学 | Stiction damper with adjustable damping force |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696419A (en) * | 2015-01-14 | 2015-06-10 | 上海上材减振科技有限公司 | Viscous damper provided with automatic temperature-control pressure relief devices |
| CN104696419B (en) * | 2015-01-14 | 2017-02-01 | 上海上材减振科技有限公司 | Viscous damper provided with automatic temperature-control pressure relief devices |
| CN106321559A (en) * | 2016-10-20 | 2017-01-11 | 太原重型机械集团工程技术研发有限公司 | Modular hydraulic equipment and protecting device thereof |
| CN107255134A (en) * | 2017-08-16 | 2017-10-17 | 中车青岛四方车辆研究所有限公司 | Viscoelastic medium buffer |
| CN107255134B (en) * | 2017-08-16 | 2019-04-30 | 中车青岛四方车辆研究所有限公司 | Viscoelastic medium buffer |
| CN108626296A (en) * | 2018-04-02 | 2018-10-09 | 徐州徐工液压件有限公司 | A kind of one-way damper valve on hydro-pneumatic suspension system |
| CN113446419A (en) * | 2021-06-28 | 2021-09-28 | 中阀科技(长沙)阀门有限公司 | Axial-flow slow-closing check valve |
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| Publication number | Publication date |
|---|---|
| CN103267168B (en) | 2015-10-07 |
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