CN201166191Y - Labyrinth type multilevel decompression control valve - Google Patents
Labyrinth type multilevel decompression control valve Download PDFInfo
- Publication number
- CN201166191Y CN201166191Y CNU2008200118272U CN200820011827U CN201166191Y CN 201166191 Y CN201166191 Y CN 201166191Y CN U2008200118272 U CNU2008200118272 U CN U2008200118272U CN 200820011827 U CN200820011827 U CN 200820011827U CN 201166191 Y CN201166191 Y CN 201166191Y
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- valve
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- multistage step
- runner
- control valve
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Abstract
The utility model relates to a labyrinth multistage depressurization control valve, which is composed of a valve body, a valve cover, a valve internal part, a valve rod and a filler, wherein the valve internal part is composed of an depressurization valve cage, a valve plug and a valve seat which are made of multistage choke discs, multiple groups of medium flow passages whose sections are rectangular are arranged on the choke discs, the flow passages are formed through connecting a plurality of straight through segments and a plurality of elbow segments whose bend angles are 90 degrees, the valve plug is installed on the end portion of the valve rod, the side wall of the valve plug is matched with the inner loop wall of the loop choke discs group of the multistage depressurization valve cage, and the front end of the valve plug is matched with the valve seat. The labyrinth multistage depressurization control valve has the advantages of compact and reliable structure, convenient and rapid disc replacement, good versatility, long service life and high resistance to shock. Damages to the device due to cavitation erosion, noise and oscillation can be effectively eliminated, the maintenance and repairing cost is reduced, different discs can be adopted according to different medium conditions, and different Cv values and discharge characteristics can be realized. The labyrinth multistage depressurization control valve adopts different flow directions and is applied in liquid and gas.
Description
Technical field
The utility model relates to control valve, relates in particular to the multistage step-down control valve of the mazy type of being made up of multithread road mazy type disc
Background technique
In process control, many control valves of working under high pressure, High Pressure Difference condition are arranged, under this condition, when medium was liquid, control valve can produce cavitation phenomenon, caused trim to damage rapidly, and then control valve was lost efficacy, can the generation accident when serious.Cavitation erosion be since medium under the effect of control valve throttle element, pressure descends, and its drop-out value is lower than the saturated vapor pressure of liquid, has produced numerous air-bubble at liquid internal, be called flash distillation, behind throttle element, during pressure recovery, its pressure is higher than the saturated vapor pressure of liquid again, the bubble that produce this moment breaks under the high pressure effect, bubble breaks trim is produced strong destruction, causes damaging, and is called cavitation erosion; Can produce noise, vibration when medium is gas, this is that under high pressure, High Pressure Difference effect, its flow velocity can surpass 80m/s because gas is compressible, and trim is produced high-flow-speed outwash, wire drawing phenomenon, causes great noise and valve to damage.
More than two kinds of phenomenons all the reliable use of control valve is produced adverse influence, even cause whole automatic control process to lose efficacy.For addressing the above problem, available technology adopting the multistage dropping valve of mazy type.The valve cage that the multistage dropping valve of existing mazy type is made up of valve body, valve gap, valve rod, valve plug, a plurality of step-down disc usually, valve seat, filler etc. are formed, and actuator can adopt pneumatic or electric actuator.Form the medium runner that the step-down disc is provided with axially and hole radially constitutes of valve cage, a plurality of such disc soldering group lump together and have constituted valve cage.During work, medium through repeatedly turning to, is finished step-down along the flow passage of being made up of the hole on the disc.Medium runner in the prior art on the step-down disc of composition valve cage is vertical runner, promptly along current downflow on the hole on the disc.Pressure reduction on the top and bottom of the valve cage of the multistage dropping valve of mazy type of this structure is bigger; Valve cage is being formed the distortion that welding process easily causes disc.
Summary of the invention
It is the horizontal multistage step-down control valve of mazy type that the purpose of this utility model provides a kind of medium runner.The technical solution of the utility model is:, the multistage step-down control valve of mazy type, by valve body, valve gap, trim, valve rod, filler is formed, trim is by multistage step-down valve cage, valve plug, valve seat is formed, multistage step-down valve cage is by the valve cage base, the disc group of pressing plate and the addition of a plurality of ring-like throttling disc pack is formed, each sheet throttling disc is provided with medium runner, it is characterized in that the medium runner on each disc of described multistage step-down valve cage constitutes by many groups, medium runner is that the cross section is the groove of rectangle, groove is connected to form by a plurality of straight-through section and a plurality of curved logical section ecto-entads on the ring surface of disc that are 90 ° of bent angles, each medium runner is by the sequential loop setting of " 90 ° of curved logical section → straight-through sections of straight-through section → change counterclockwise → change clockwise 90 ° of curved logical sections ", one cover " 90 ° of curved logical section → straight-through sections of straight-through section → change counterclockwise → change clockwise 90 ° of curved logical sections " is a circulation, each runner is made of 1～12 circulation, described valve plug is the open circles tubbiness, valve plug is installed in the valve rod end, the sidewall of valve plug matches with the ring-like throttling disc group internal ring wall of multistage step-down valve cage, and the front end of valve plug matches with valve seat.
The multistage step-down control valve of mazy type described in the utility model, its structure are that the many groups runner on each disc of multistage step-down valve cage of described multistage step-down control valve is into the even number set setting, and the runner group is symmetrical distribution on disc.
The multistage step-down control valve of mazy type described in the utility model, its structure is the multistage step-down valve cage that is formed by stacking by disc of described multistage step-down control valve, be provided with fixed hole between the every adjacent channels group on each disc, the fixed hole that positioning bolt passes on each disc is fixed on disc between valve cage base and the pressing plate.
The multistage step-down control valve of mazy type described in the utility model, its structure is the runner on each disc of multistage step-down valve cage of described multistage step-down control valve, the groove of runner is narrow by ring end in the disc, and is wide by disc outer shroud end, from inside to outside becomes radial continuously.
Working principle of the present utility model is: by valve plug upper and lower mobile cooperation in the multistage step-down valve cage of mazy type, finish the switch of control valve and the flow of control media.When valve plug tightly was pressed on the valve seat, valve was in closed condition, and medium does not flow.When valve plug moved up, the medium runner of valve cage was opened, and medium enters multistage step-down valve cage, flowed into labyrinth path, and the height of valve plug mobile position has determined the quantity of labyrinth path break-make, thereby had determined the size by the rate-of flow of control valve.In the work, when medium was liquid, liquid medium entered valve by the right side runner of valve body; When medium was gas, gas medium entered valve by the left side runner of valve body.Because the runner of multistage step-down valve cage has a plurality of bent angles to constitute, fluid has all consumed the kinetic energy of fluid whenever by a bent angle, has reduced rate of flow of fluid, plays the effect of one-level step-down, and the overall process that medium flows in runner is exactly the process of multistage step-down.
When control valve control be liquid medium the time, because being the right side runner by valve body, liquid medium enters valve, the flow direction of liquid medium is to internal flow by the disc outside, because runner is symmetrically distributed, can clash into mutually when runner flows out at the disc interior media, thereby underspeed head, the step-down each time of liquid medium all is no more than the saturation vapour pressure Pv of fluid, thereby avoid the generation of flash distillation, cavitation erosion, reduce noise source simultaneously.When control valve control be gas medium the time, because gas medium enters valve by the left side runner of valve body, the flow direction of gas medium is to flows outside by disc inside, because runner is interior narrow outer wide, helps the expansion of gas, by repeatedly convection current expansion, flow rate of fluid is reduced, thereby underspeed head, reduce the generation intensity of noise, reduce the erosion of fluid trim.
The setting of the setting of the loop number of each runner and disc upper runner group number on the disc is specifically determined according to medium kind and running parameter.
The utlity model has following advantage:
1, compact structure, versatility is good, the integrated type trim, reliable in structure is changed convenient, fastly, can realize the different Cv values and the exchange of Flow characteristics.
2, operating range is wide, can adopt the valve cage of different step-down progression, adapts to the needs of different pressures, pressure reduction.
3, liquid towards adopts different flow directions with gaseous medium, and applicability is strong.
4, can greatly prolong the working life of trim and control valve, improve the anti-vibration performance.The device damage that elimination is caused by cavitation erosion, noise and vibration.Reduce equipment downtime, reduce the maintenance, repair cost, increase plant capacity.
5, satisfy high temperature, high pressure and High Pressure Difference, the high flow rate medium is controlled requirement reliably, satisfies the requirement of noise limit, realizes effective noise control.
Description of drawings
Drawings attached 4 width of cloth of the present invention, wherein:
Fig. 1 is the overall structure schematic representation of the multistage dropping valve of mazy type of the present utility model.
Fig. 2 is the multistage dropping valve inner parts structure of the mazy type schematic representation of the multistage dropping valve of mazy type of the present utility model.
Fig. 3 is the single disc chip architecture schematic representation of the multistage dropping valve of mazy type of the present utility model.
Fig. 4 is that the liquid medium and the gas medium of the multistage dropping valve of mazy type of the present utility model flows to schematic representation.In the accompanying drawing, 1, valve rod; 2, pressing plate; 3, filler; 4, attaching nut; 5, packing spring; 6, valve gap; 7, valve cage; 8, valve body; 9, the multistage step-down disc group of valve cage; 10, valve seat; 11, valve plug; 12, disc pressing plate; 13, disc base; 14, fixed hole; 15, medium runner; 16, liquid medium flows to import; 17, gas medium flows to import.
Embodiment
As shown in drawings, the multistage dropping valve of mazy type is made up of valve body 8, valve gap 6, trim, valve rod 1, filler, trim is made up of multistage step-down valve cage 7, valve plug 11, valve seat 10, multistage step-down valve cage is made up of the disc group 9 of disc base 13, disc pressing plate and 18 ring-like throttling disc stacks, each sheet throttling disc is provided with four groups of medium runners 15, the runner group is symmetric arrangement, be provided with fixed hole 14 between the adjacent channels group, the fixed hole 14 that positioning bolt passes on each disc is fixed on disc between disc base 13 and the disc pressing plate 12.Medium runner 15 is that the cross section is the groove of rectangle, and each runner is made up of three circulations, and the groove of runner is narrow by ring end in the disc, and is wide by disc outer shroud end, from inside to outside becomes radial continuously.Valve plug 11 is the open circles tubbiness, and valve plug 11 is installed in valve rod 1 end, and the sidewall of valve plug 11 matches with the internal ring wall of the ring-like throttling disc group of multistage step-down valve cage, and the front end of valve plug 11 matches with valve seat 10.Valve plug is upper and lower moving in the multistage step-down valve cage of mazy type, is directed on the multistage step-down cage of the mazy type valve.Valve body 8 is the fundamental parts that bear pressure medium and hold other parts.Present embodiment is applicable to liquid medium, also is applicable to gas medium, and its Cv value scope is: 1～1100, and Flow characteristics is: straight line or correction equal percentage.
Claims (4)
1, the multistage step-down control valve of mazy type, by valve body (8), valve gap (6), trim (7,11,10), valve rod (1), filler is formed, trim is by multistage step-down valve cage (7), valve plug (11), valve seat (10) is formed, multistage step-down valve cage is by disc base (13), the disc group (9) of disc pressing plate (12) and the addition of a plurality of ring-like throttling disc pack is formed, each sheet throttling disc is provided with medium runner (15), it is characterized in that the medium runner (15) on each disc of described multistage step-down valve cage constitutes by many groups, medium runner (15) is that the cross section is the groove of rectangle, groove is connected to form by a plurality of straight-through section and a plurality of curved logical section ecto-entads on the ring surface of disc that are 90 ° of bent angles, each medium runner is by the sequential loop setting of " 90 ° of curved logical section → straight-through sections of straight-through section → change counterclockwise → change clockwise 90 ° of curved logical sections ", one cover " 90 ° of curved logical section → straight-through sections of straight-through section → change counterclockwise → change clockwise 90 ° of curved logical sections " is a circulation, each runner is made of 1～12 circulation, described valve plug (11) is the open circles tubbiness, valve plug (11) is installed in valve rod (1) end, the sidewall of valve plug matches with the internal ring wall of the ring-like throttling disc group of multistage step-down valve cage, and the front end of valve plug (11) matches with valve seat (10).
2, the multistage step-down control valve of mazy type according to claim 1 is characterized in that the many groups runner on each disc of multistage step-down valve cage of described multistage step-down control valve is into the even number set setting, and the runner group is symmetrical distribution on disc.
3, the multistage step-down control valve of mazy type according to claim 1, the multistage step-down valve cage that is formed by stacking by disc that it is characterized in that described multistage step-down control valve, be provided with fixed hole (14) between the every adjacent channels group on each disc, the fixed hole that positioning bolt passes on each disc is fixed on disc between disc base (13) and the disc pressing plate (12).
4, the multistage step-down control valve of mazy type according to claim 1, it is characterized in that the runner on each disc of multistage step-down valve cage of described multistage step-down control valve, the groove of runner is narrow by ring end in the disc, and is wide by disc outer shroud end, from inside to outside becomes radial continuously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200118272U CN201166191Y (en) | 2008-03-28 | 2008-03-28 | Labyrinth type multilevel decompression control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200118272U CN201166191Y (en) | 2008-03-28 | 2008-03-28 | Labyrinth type multilevel decompression control valve |
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| Publication Number | Publication Date |
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| CN201166191Y true CN201166191Y (en) | 2008-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200118272U Expired - Fee Related CN201166191Y (en) | 2008-03-28 | 2008-03-28 | Labyrinth type multilevel decompression control valve |
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| CN (1) | CN201166191Y (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2435739A1 (en) * | 2009-05-28 | 2012-04-04 | Control Components, Inc. | Short stroke flow control valve |
| CN102777645A (en) * | 2011-10-31 | 2012-11-14 | 费希尔久安输配设备(成都)有限公司 | Flow adjuster, valve and trim assembly |
| CN102927296A (en) * | 2012-11-10 | 2013-02-13 | 无锡智能自控工程股份有限公司 | Structure of array type flow rate control valve suitable for compressible fluid |
| CN102937188A (en) * | 2012-11-10 | 2013-02-20 | 无锡智能自控工程股份有限公司 | Array flow velocity control valve structure suitable for incompressible fluid |
| CN103462490A (en) * | 2013-09-04 | 2013-12-25 | 浙江爱仕达电器股份有限公司 | Multistage pressure adjusting valve of pressure cooker |
| EP2716945A1 (en) * | 2012-10-05 | 2014-04-09 | Severn Glocon Limited | Flow trim for a valve |
| CN103821979A (en) * | 2014-02-25 | 2014-05-28 | 杭州杭氧工装泵阀有限公司 | Multistage depressurization valve |
| CN103867729A (en) * | 2014-04-01 | 2014-06-18 | 苏州道森阀门有限公司 | Labyrinth type minimum flow valve |
| CN103953786A (en) * | 2014-02-18 | 2014-07-30 | 章华 | Damping and decelerating structure for labyrinth disk |
| CN104110523A (en) * | 2013-04-18 | 2014-10-22 | 江苏神通阀门股份有限公司 | High-pressure-difference adjusting valve sleeve |
| CN105605305A (en) * | 2015-11-23 | 2016-05-25 | 南通龙源电站阀门有限公司 | Novel anti-scouring adjusting valve |
| CN105626957A (en) * | 2016-03-25 | 2016-06-01 | 吴忠仪表有限责任公司 | Cavitation-resisting and pressure-lowering lamination valve cage |
| CN105972223A (en) * | 2016-05-10 | 2016-09-28 | 伯特利阀门集团有限公司 | Labyrinth type regulating valve with porous sleeves |
| CN106439206A (en) * | 2016-11-08 | 2017-02-22 | 上海发电设备成套设计研究院 | Structure preventing washing erosion of sealing face of high-pressure adjusting valve |
| CN106795972A (en) * | 2014-10-08 | 2017-05-31 | Spx流动有限公司 | Balance two-seater globe valve with flexible plugs |
| CN108397562A (en) * | 2018-02-24 | 2018-08-14 | 江苏亿阀股份有限公司 | A kind of High Pressure Difference intelligent regulating valve |
| CN109027289A (en) * | 2018-08-29 | 2018-12-18 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of cage valve |
| CN109340449A (en) * | 2018-11-13 | 2019-02-15 | 广东粤电靖海发电有限公司 | A kind of multistage accumulation of energy buck configuration regulating valve |
-
2008
- 2008-03-28 CN CNU2008200118272U patent/CN201166191Y/en not_active Expired - Fee Related
Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2435739A1 (en) * | 2009-05-28 | 2012-04-04 | Control Components, Inc. | Short stroke flow control valve |
| EP2435739A4 (en) * | 2009-05-28 | 2014-04-09 | Control Components | Short stroke flow control valve |
| CN102777645A (en) * | 2011-10-31 | 2012-11-14 | 费希尔久安输配设备(成都)有限公司 | Flow adjuster, valve and trim assembly |
| CN102777645B (en) * | 2011-10-31 | 2015-08-12 | 费希尔久安输配设备(成都)有限公司 | Fluid conditioner, valve and trim assemblies |
| EP2716945A1 (en) * | 2012-10-05 | 2014-04-09 | Severn Glocon Limited | Flow trim for a valve |
| CN102927296A (en) * | 2012-11-10 | 2013-02-13 | 无锡智能自控工程股份有限公司 | Structure of array type flow rate control valve suitable for compressible fluid |
| CN102937188A (en) * | 2012-11-10 | 2013-02-20 | 无锡智能自控工程股份有限公司 | Array flow velocity control valve structure suitable for incompressible fluid |
| CN104110523A (en) * | 2013-04-18 | 2014-10-22 | 江苏神通阀门股份有限公司 | High-pressure-difference adjusting valve sleeve |
| CN103462490A (en) * | 2013-09-04 | 2013-12-25 | 浙江爱仕达电器股份有限公司 | Multistage pressure adjusting valve of pressure cooker |
| CN103462490B (en) * | 2013-09-04 | 2015-08-19 | 浙江爱仕达电器股份有限公司 | A kind of pressure cooker Multi-stage pressure regulating valve |
| CN103953786A (en) * | 2014-02-18 | 2014-07-30 | 章华 | Damping and decelerating structure for labyrinth disk |
| CN103821979A (en) * | 2014-02-25 | 2014-05-28 | 杭州杭氧工装泵阀有限公司 | Multistage depressurization valve |
| CN103867729A (en) * | 2014-04-01 | 2014-06-18 | 苏州道森阀门有限公司 | Labyrinth type minimum flow valve |
| CN106795972A (en) * | 2014-10-08 | 2017-05-31 | Spx流动有限公司 | Balance two-seater globe valve with flexible plugs |
| CN106795972B (en) * | 2014-10-08 | 2019-07-09 | Spx流动有限公司 | Balance two-seater globe valve with flexible plugs |
| CN105605305A (en) * | 2015-11-23 | 2016-05-25 | 南通龙源电站阀门有限公司 | Novel anti-scouring adjusting valve |
| CN105626957A (en) * | 2016-03-25 | 2016-06-01 | 吴忠仪表有限责任公司 | Cavitation-resisting and pressure-lowering lamination valve cage |
| CN105626957B (en) * | 2016-03-25 | 2019-01-25 | 吴忠仪表有限责任公司 | Anti-cavitation is depressured lamination valve cage |
| CN105972223A (en) * | 2016-05-10 | 2016-09-28 | 伯特利阀门集团有限公司 | Labyrinth type regulating valve with porous sleeves |
| CN106439206A (en) * | 2016-11-08 | 2017-02-22 | 上海发电设备成套设计研究院 | Structure preventing washing erosion of sealing face of high-pressure adjusting valve |
| CN108397562A (en) * | 2018-02-24 | 2018-08-14 | 江苏亿阀股份有限公司 | A kind of High Pressure Difference intelligent regulating valve |
| CN109027289A (en) * | 2018-08-29 | 2018-12-18 | 普雷沃流体控制科技（芜湖）有限公司 | A kind of cage valve |
| CN109340449A (en) * | 2018-11-13 | 2019-02-15 | 广东粤电靖海发电有限公司 | A kind of multistage accumulation of energy buck configuration regulating valve |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081217 Termination date: 20140328 |