CN103542115A - Axial-flow type multistage depressurization anti-cavitation regulating valve - Google Patents
Axial-flow type multistage depressurization anti-cavitation regulating valve Download PDFInfo
- Publication number
- CN103542115A CN103542115A CN201210238601.7A CN201210238601A CN103542115A CN 103542115 A CN103542115 A CN 103542115A CN 201210238601 A CN201210238601 A CN 201210238601A CN 103542115 A CN103542115 A CN 103542115A
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- China
- Prior art keywords
- valve
- spool
- cavitation
- valve core
- valve body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
- F16K1/38—Valve members of conical shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0254—Construction of housing; Use of materials therefor of lift valves with conical shaped valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/53—Mechanical actuating means with toothed gearing
- F16K31/54—Mechanical actuating means with toothed gearing with pinion and rack
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/04—Means in valves for absorbing fluid energy for decreasing pressure or noise level, the throttle being incorporated in the closure member
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Sliding Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention provides an axial-flow type multistage depressurization anti-cavitation regulating valve which comprises a valve body, a valve core and a driving shaft, wherein the driving shaft is fixed in the valve body through a stuffing sleeve, a backing ring and a lower bearing, the valve core penetrates through a valve core sleeve and a guiding sleeve and is fixed in the valve body through a compression ring, the valve core is a cascade valve core and is provided with a rack, and a gear is arranged on the driving shaft and is in meshing transmission with the rack. The axial-flow type multistage depressurization anti-cavitation regulating valve has the advantages that angular displacement of the driving shaft is converted into linear displacement of the valve core, action is steady, driving can be achieved by means of an angular travel executing mechanism, valve installation height is reduced, and space is saved; furthermore, the cascade valve core structure is high in flow capacity and anti-cavitation capacity, different throttling series are designed according to different kinds of differential pressure, and therefore scour-damage to the surface of the valve core from fluid is effectively reduced. The valve can be designed to be integral or split and can be installed and maintained conveniently.
Description
Technical field
The present invention relates to a kind of valve, particularly relate to a kind of modulating valve of controlling occasion for High Pressure Difference.
Background technique
At present, the High Pressure Difference controlling fileds such as the adjusting of power plant boiler cooling water, Minimum Flowrate of Feed Pump control, continuous blowdown, the adjusting that discharges water, main steam adjusting close, conventionally adopt multiple step plug or labyrinth structure pressure reduction with classification, with the infringement of avoiding flash distillation, cavitation, cavitation to cause valve pipe system.Common multilevel decompression modulating valve adopts Cascade spool more both at home and abroad, can solve the problem of cavitation producing under High Pressure Difference operating mode, but it is by valve rod straight line motion band movable valve plug moving linearly, and action is not steady and installing space is larger; Valve body often adopts smithwelding structure, and runner turns to suddenly, and flow resistance is large; Valve core housing adopts hot-mounting process, can not dismantle inconvenient maintenance after assembling again.
Summary of the invention
In order to overcome the shortcoming that existing straight journey multilevel decompression anti-cavitation modulating valve action is steady, installing space is large, flow resistance is large and dismounting is inconvenient, the invention provides a kind of axial flow multilevel decompression anti-cavitation modulating valve.
The technical solution adopted for the present invention to solve the technical problems is a kind of axial flow multilevel decompression anti-cavitation modulating valve, comprise valve body, spool, live axle, live axle is fixed in valve body by filler cover, gasket ring and lower bearing, spool runs through valve core housing and guide sleeve, by pressure ring, be fixed in valve body, spool is tandem spool, and spool is provided with tooth bar, live axle is provided with gear, the wheel and rack transmission of intermeshing.
Medium import is set in valve body, and import is axisymmetrical flow linear structure.
Spool can design different throttling progression.
Spool face has large breach, and large breach is positioned at the relative 90 degree positions of spool face, and 1 place is at least set.
Can be designed to integrated type and split-type structural.
Beneficial effect of the present invention is as follows:
1, built-in gear bar driven Design, is effectively converted into the angular displacement of live axle the straight-line displacement of spool, and stable action, can realize gapless driving, and can adopt angle stroke actuators to drive, and reduces valve installation height, saves space.
2, tandem valve core structure has higher negotiability and complete anti-cavitation ability, and tandem spool can be designed to according to different pressure reduction different throttling progression, effectively reduces the erosion damage of fluid to spool face.
3, spool face has large breach, is more suitable for dirty medium operating mode, and spool can be not stuck, flexible movements.
4, on valve body, medium import adopts axisymmetrical flow linear structure, makes medium turn to smoothness, reduces flow resistance, reduces energy loss, has effectively avoided turning to because of runner eddy current, the cavitation of unexpected generation.
5, utilize pressing plate standing valve core retainer plate, dismantle, keep in repair very convenient.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1 is the present embodiment monolithic construction figure
Fig. 2 is the present embodiment split-type structural figure
In Fig. 1, Fig. 2: 1. valve body; 2. packing seal pad; 3. gasket ring; 4. filler; 5. filler pressing sleeve; 6. filler cover; 7. live axle; 8. guide sleeve; 9. guide sleeve sealing gasket; 10. seal spool ring; 11. valve core housings; 12. spools; 13. valve core housing seal rings; 14. screws; 15. pressure rings; 16. lower bearings; 17. medium imports; 18. bolts; 19. main valve bodies; 20. auxiliary valve bodies.
Embodiment
As shown in Figure 1, a kind of axial flow multilevel decompression anti-cavitation modulating valve, comprise valve body 1, spool 12, live axle 7, live axle 7 by filler overlap 6, gasket ring 3 and lower bearing 16 be fixed in valve body 1, rear with filler pressing sleeve 5 fixing seals by filling filler 4 between live axle 7 and filler cover 6, between filler cover 6 and valve body 1, by packing seal pad 2, seal; Spool 12 runs through valve core housing 11 and guide sleeve 8, by pressure ring 15, utilize screw 14 to be fixed in valve body 1, between spool 12 and guide sleeve 8, by seal spool ring 10, seal, between guide sleeve 8 and valve core housing 11 and valve body 1, all by 9 sealings of pilot seal pad, valve core housing 11 is realized sealing by valve core housing seal ring 13 and valve body 1; Spool 12 is tandem spool, and spool 12 is provided with tooth bar, and live axle 7 is provided with gear, the wheel and rack transmission of intermeshing.
During work, medium enters from left end medium import 17, when driving mechanism provides certain moment of torsion to live axle 7, and the transmission of intermeshing of the rack segments on the gear segment on live axle 7 and spool 12, the axial direct linear displacement that the angular displacement of live axle 7 is transformed into spool 12, realizes the keying of valve.
When counterclockwise live axle 7 being applied to moment, spool 12 moves to opening direction, medium is through the multistage throttle of spool 12, thereby reach the object that regulates rate-of flow and pressure, and relative 90 degree positions, the surperficial many places of spool 12 have large breach, medium is in flow process, constantly change direction, step pressure reducing, reduces flow velocity, reaches the object that prevents cavitation and cavitation.
When clockwise direction applies moment to live axle 7, spool 12 moves to closing direction, until valve is closed completely, consists of the pressure pocket of a high leak tightness valve body 1, guide sleeve 8, valve core housing 11, spool 12 and pressure ring 15.
As shown in Figure 2, be the split-type structural figure of the present embodiment, split-type structural is that valve body is divided into main valve body 19 and auxiliary valve body 20 two-part, these two-part are fixing with bolt 18, during maintenance, take valve body apart, take out valve core housing, efficient and convenient.
Claims (5)
1. an axial flow multilevel decompression anti-cavitation modulating valve, comprise valve body, spool, live axle, live axle is fixed in valve body by filler cover, gasket ring and lower bearing, spool runs through valve core housing and guide sleeve, by pressure ring, be fixed in valve body, it is characterized in that: described spool is tandem spool, and spool is provided with tooth bar, described live axle is provided with gear, the wheel and rack transmission of intermeshing.
2. a kind of axial flow multilevel decompression anti-cavitation modulating valve according to claim 1, is characterized in that: medium import is set in described valve body, and described import is axisymmetrical flow linear structure.
3. a kind of axial flow multilevel decompression anti-cavitation modulating valve according to claim 1, is characterized in that: described spool can design different throttling progression.
4. according to a kind of axial flow multilevel decompression anti-cavitation modulating valve described in claim 1 or 3, it is characterized in that: described spool face has large breach, large breach is positioned at the relative 90 degree positions of spool face, and 1 place is at least set.
5. a kind of axial flow multilevel decompression anti-cavitation modulating valve according to claim 1, is characterized in that: can be designed to integrated type and split-type structural.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210238601.7A CN103542115A (en) | 2012-07-11 | 2012-07-11 | Axial-flow type multistage depressurization anti-cavitation regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210238601.7A CN103542115A (en) | 2012-07-11 | 2012-07-11 | Axial-flow type multistage depressurization anti-cavitation regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103542115A true CN103542115A (en) | 2014-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210238601.7A Pending CN103542115A (en) | 2012-07-11 | 2012-07-11 | Axial-flow type multistage depressurization anti-cavitation regulating valve |
Country Status (1)
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|---|---|
| CN (1) | CN103542115A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100513A (en) * | 2014-08-01 | 2014-10-15 | 随州亿丰泵业有限公司 | Performance test platform of high-pressure water pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3744424A1 (en) * | 1987-12-29 | 1989-07-13 | Wilhelm Odendahl | Throttle valve |
| CN2591350Y (en) * | 2002-12-06 | 2003-12-10 | 王金海 | Fast opening & closing sluice valve |
| US20040238050A1 (en) * | 2003-05-30 | 2004-12-02 | Hamblin Nathan J. | Control valve trim and seat design for valve trim with minimal unbalanced area |
| CN201428856Y (en) * | 2009-07-02 | 2010-03-24 | 大连亨利测控仪表工程有限公司 | High pressure difference particle fluid control valve |
| CN201599488U (en) * | 2010-01-08 | 2010-10-06 | 环球阀门集团有限公司 | High differential pressure regulating valve |
| CN202646726U (en) * | 2012-07-11 | 2013-01-02 | 江苏神通阀门股份有限公司 | Axial-flow type multistage decompression anti-cavitation adjusting valve |
-
2012
- 2012-07-11 CN CN201210238601.7A patent/CN103542115A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3744424A1 (en) * | 1987-12-29 | 1989-07-13 | Wilhelm Odendahl | Throttle valve |
| CN2591350Y (en) * | 2002-12-06 | 2003-12-10 | 王金海 | Fast opening & closing sluice valve |
| US20040238050A1 (en) * | 2003-05-30 | 2004-12-02 | Hamblin Nathan J. | Control valve trim and seat design for valve trim with minimal unbalanced area |
| CN201428856Y (en) * | 2009-07-02 | 2010-03-24 | 大连亨利测控仪表工程有限公司 | High pressure difference particle fluid control valve |
| CN201599488U (en) * | 2010-01-08 | 2010-10-06 | 环球阀门集团有限公司 | High differential pressure regulating valve |
| CN202646726U (en) * | 2012-07-11 | 2013-01-02 | 江苏神通阀门股份有限公司 | Axial-flow type multistage decompression anti-cavitation adjusting valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104100513A (en) * | 2014-08-01 | 2014-10-15 | 随州亿丰泵业有限公司 | Performance test platform of high-pressure water pump |
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Application publication date: 20140129 |