CN103644340A - High-temperature and high-pressure difference regulating valve with large diameter - Google Patents
High-temperature and high-pressure difference regulating valve with large diameter Download PDFInfo
- Publication number
- CN103644340A CN103644340A CN201310676789.8A CN201310676789A CN103644340A CN 103644340 A CN103644340 A CN 103644340A CN 201310676789 A CN201310676789 A CN 201310676789A CN 103644340 A CN103644340 A CN 103644340A
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- China
- Prior art keywords
- valve
- spool
- cage
- part section
- upper segment
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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
- F16K1/42—Valve seats
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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
- F16K1/52—Means for additional adjustment of the rate of flow
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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
- F16K49/00—Means in or on valves for heating or cooling
Abstract
The invention relates to the field of a regulating valve, and discloses a high-temperature and high-pressure difference regulating valve with a large diameter. The valve comprises a valve body, an upper valve cap, a valve cage, a valve seat, a valve core and an actuating mechanism, wherein the inner diameter of an upper valve cage part section is larger than that of a lower valve cage part section, and valve cage windows are formed in the periphery of the lower valve cage part section; the valve core comprises a valve rod, an upper valve core part section and a lower valve core part section; the outer diameter of the upper valve core part section is larger than that of the lower valve core part section; a vertical distance between a junction of the upper valve cage part section and the lower valve cage part section and the valve seat is equal to a vertical distance between a junction of the upper valve core part section and the lower valve core part section and the valve seat; the diameter of the valve seat ranges from 250 mm to 320 mm; and a hard alloy is arranged in a build-up welding manner at the junction of the upper valve cage part section and the lower valve cage part section, the junction of the upper valve core part section and the lower valve core part section, the bottom of the valve core and a contact position with the valve core on the valve seat. The high-temperature and high-pressure difference regulating valve with the large diameter is large in valve seat diameter and can provide larger flow, and has the advantages of stable work, long service life, good sealing and zero closing leakage.
Description
Technical field
The present invention relates to modulating valve field, especially a kind of high-temp. high-pressure differential.
Background technique
Modulating valve has another name called control valve, and by accepting the control signal of regulation unit output, modulating valve removes to change fluid flow by power operation.High-temp. high-pressure differential is the modulating valve that is applicable to high temperature and high pressure gas, in prior art, high-temp. high-pressure differential diameter is generally no more than 250mm, pressure reduction is no more than 1MPa, cannot meet present production required, and make bigbore high-temp. high-pressure differential, easily occur the wild effects such as leakage.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of heavy-caliber high-temperature high-differential-pressure regulating valve.
Heavy-caliber high-temperature high-differential-pressure regulating valve disclosed in this invention comprises valve body, bonnet, valve cage, valve seat, spool and actuator, described bonnet is positioned at valve body top, described valve cage is positioned at valve body, described spool is positioned at valve cage, described valve seat is positioned at spool below, described actuator is connected with spool by push rod, valve inlet is positioned at valve body lower end, valve export is positioned at valve body side, described valve cage comprises valve cage upper segment and valve cage lower section, described valve cage upper segment internal diameter is greater than valve cage lower section internal diameter, described valve cage lower section has valve cage window around, described spool comprises valve rod, spool upper segment and spool lower section, described spool upper segment external diameter is greater than spool lower section external diameter, described valve cage upper segment and valve cage lower section intersection equal spool upper segment and spool lower section intersection to the vertical distance of valve seat to the vertical distance of valve seat, described seat diameter is 250mm～320mm, described valve cage upper segment and valve cage lower section intersection, spool upper segment and spool lower section intersection, on spool bottom and valve seat, be welded with cemented carbide with the contacting point Jun Dui of spool.
Preferably, described seat diameter is 300mm.
Preferably, described spool upper segment is provided with vent.
Preferably, described bonnet is connected by adjusting bolt with valve body.
Preferably, on described bonnet, be provided with radiating fin.
The invention has the beneficial effects as follows: the seat diameter of this heavy-caliber high-temperature high-differential-pressure regulating valve is large, larger flow can be provided, and this valve working is stable, long service life; Good airproof performance, closes zero leakage.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is the schematic diagram of valve cage in the present invention;
Fig. 3 is the schematic diagram of valve seat in the present invention;
Fig. 4 is the schematic diagram of spool in the present invention.
Mark in figure: 1-valve body, 2-bonnet, 201-radiating fin, 3-valve cage, 301-valve cage upper segment, 302-valve cage lower section, 303-valve cage window, 4-valve seat, 5-spool, 501-spool upper segment, 502-spool lower section, 503-valve rod, 504-vent, 6-actuator, 7-push rod, 8-valve inlet, 9-valve export, 10-cemented carbide, 11-adjusting bolt.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As Fig. 1, Fig. 2, shown in Fig. 3 and Fig. 4, heavy-caliber high-temperature high-differential-pressure regulating valve disclosed in this invention comprises valve body 1, bonnet 2, valve cage 3, valve seat 4, spool 5 and actuator 6, described bonnet 2 is positioned at valve body 1 top, described valve cage 3 is positioned at valve body 1, described spool 5 is positioned at valve cage 3, described valve seat 4 is positioned at spool 5 belows, described actuator 6 is connected with spool 5 by push rod 7, it is characterized in that: valve inlet 8 is positioned at valve body 1 lower end, valve export 9 is positioned at valve body 1 side, described valve cage 3 comprises valve cage upper segment 301 and valve cage lower section 302, described valve cage upper segment 301 internal diameters are greater than valve cage lower section 302 internal diameters, described valve cage lower section 302 has valve cage window 303 around, described spool 5 comprises valve rod 503, spool upper segment 501 and spool lower section 502, described spool upper segment 501 external diameters are greater than spool lower section 502 external diameters, described valve cage upper segment 301 and valve cage lower section 302 intersections equal spool upper segment 501 and spool lower section 502 intersections to the vertical distance of valve seat 4 to the vertical distance of valve seat 4, described valve seat 4 bores are 250mm～320mm, the 302 sections of intersections in described valve cage upper segment 301 and valve cage bottom, spool upper segment 501 and spool lower section 502 intersections, on spool 5 bottoms and valve seat 4, be welded with cemented carbide 10 with the contacting point Jun Dui of spool 5.During this heavy-caliber high-temperature high-differential-pressure regulating valve work, first, Open valve, by actuator 6, drive push rod 7 to move up, on push rod 7, on shipper pole movable valve plug 5, move, the valve cage window 303 of valve cage lower section 302 is exposed, valve opening, gas enters valve body 1 from the valve inlet 9 of valve body 1 lower end, and the valve cage window 303 exposing through valve cage lower section 302, from valve export 9 discharge valves.By moving the control of height on 6 pairs of spools 5 of actuator, thereby control the size of exposing valve cage window 303, so just can change the aperture of valve, control the size of the gas flow flowing through.Because valve cage upper segment 301 and valve cage lower section 302 intersections equal spool upper segment 501 and spool lower section 502 intersections to the vertical distance of valve seat 4 to the vertical distance of valve seat 4, so when spool 5 moves down, when spool upper segment 501 contacts with valve cage lower section 302, spool 5 will contact with valve seat 4, thereby make this valve closing, realize and close zero leakage.Valve seat 4 bores are that 250mm～320mm flow that can make this heavy-caliber high-temperature high-differential-pressure regulating valve pass through is larger, to meet production necessary requirement, certainly, now other valve parts also will increase according to the bore of valve seat 4, to support the circulation of large flow gas.In valve closing and opening process, spool 5 easily damages with valve seat 4 contacting points with valve cage 3 contacting points and spool 5, cause valve leak, affect valve working life, so be welded with cemented carbide 10 with the contacting point Jun Dui of spool 5 on valve cage upper segment 301 and valve cage lower section 302 intersections, spool upper segment 501 and 502 sections of spool bottoms intersection, spool 5 bottoms and valve seat 4, not only can improve the seal of this heavy-caliber high-temperature high-differential-pressure regulating valve, can also make valve working more stable, extend valve working life.Through test, the gas pressure intensity that this heavy-caliber high-temperature high-differential-pressure regulating valve can bear is up to 32MPa, and shut off differential pressure can reach 20MPa, is specially adapted in synthesis ammonia system and large-scale thermoelectricity plant.
In such scheme, required if less possibly of valve seat 4 bores cannot meet production, if valve seat 4 bores are too greatly, may cause destabilizing factor, so as mode of priority, described seat diameter is 300mm.It is required that the seat diameter of 300mm can meet production, can keep again higher stability and seal.
In such scheme, if spool 5 top air pressure and spool 5 bottom air pressure are inconsistent, may affect valve and normally work, so as optimal way, described spool 5 upper segment are provided with vent 504.Spool 5 top air pressure are communicated with spool 5 bottoms like this, make two place's air pressure consistent, are conducive to moving up and down of spool 5, alleviate actuator's 6 loads simultaneously.
In this heavy-caliber high-temperature high-differential-pressure regulating valve process of Installation and Debugging, may need adjusted, so as optimal way, described bonnet 2 is connected by adjusting bolt 11 with valve body 1.Make like this dismounting of this heavy-caliber high-temperature high-differential-pressure regulating valve and debug convenient.
During due to this heavy-caliber high-temperature high-differential-pressure regulating valve work, the gas temperature of circulation is higher, so, as optimal way, on described bonnet 2, be provided with radiating fin 201.The arranging of radiating fin 201 can make this heavy-caliber high-temperature high-differential-pressure regulating valve be 250 ℃ in circulated gases still normally to work.
Claims (5)
1. heavy-caliber high-temperature high-differential-pressure regulating valve, comprise valve body (1), bonnet (2), valve cage (3), valve seat (4), spool (5) and actuator (6), described bonnet (2) is positioned at valve body (1) top, described valve cage (3) is positioned at valve body (1), described spool (5) is positioned at valve cage (3), described valve seat (4) is positioned at spool (5) below, described actuator (6) is connected with spool (5) by push rod (7), it is characterized in that: valve inlet (8) is positioned at valve body (1) lower end, valve export (9) is positioned at valve body (1) side, described valve cage (3) comprises valve cage upper segment (301) and valve cage lower section (302), described valve cage upper segment (301) internal diameter is greater than valve cage lower section (302) internal diameter, described valve cage lower section (302) has valve cage window (303) around, described spool (5) comprises valve rod (503), spool upper segment (501) and spool lower section (502), described spool upper segment (501) external diameter is greater than spool lower section (502) external diameter, described valve cage upper segment (301) and valve cage lower section (302) intersection equal spool upper segment (501) and spool lower section (502) intersection to the vertical distance of valve seat (4) to the vertical distance of valve seat (4), described valve seat (4) bore is 250mm～320mm, described valve cage upper segment (301) and valve cage bottom (302) section intersection, spool upper segment (501) and spool lower section (502) intersection, spool (5) bottom and valve seat (4) contacting point Jun Dui upper and spool (5) is welded with cemented carbide (10).
2. heavy-caliber high-temperature high-differential-pressure regulating valve as claimed in claim 1, is characterized in that: described valve seat (4) bore is 300mm.
3. heavy-caliber high-temperature high-differential-pressure regulating valve as claimed in claim 1, is characterized in that: described spool upper segment (501) is provided with vent (504).
4. heavy-caliber high-temperature high-differential-pressure regulating valve as claimed in claim 1, is characterized in that: described bonnet (2) is connected by adjusting bolt (11) with valve body (1).
5. heavy-caliber high-temperature high-differential-pressure regulating valve as claimed in claim 1, is characterized in that: on described bonnet (2), be provided with radiating fin (201).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310676789.8A CN103644340A (en) | 2013-12-07 | 2013-12-07 | High-temperature and high-pressure difference regulating valve with large diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310676789.8A CN103644340A (en) | 2013-12-07 | 2013-12-07 | High-temperature and high-pressure difference regulating valve with large diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103644340A true CN103644340A (en) | 2014-03-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310676789.8A Pending CN103644340A (en) | 2013-12-07 | 2013-12-07 | High-temperature and high-pressure difference regulating valve with large diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103644340A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482222A (en) * | 2014-12-17 | 2015-04-01 | 杭州华惠阀门有限公司 | Steam regulating valve |
| CN106151531A (en) * | 2015-04-03 | 2016-11-23 | 无锡鑫华控阀业有限公司 | Pottery baiting valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3892394A (en) * | 1973-08-06 | 1975-07-01 | Pennsylvania Engineering Corp | Metallurgical vessel having restraining means |
| JPS6283564A (en) * | 1985-10-09 | 1987-04-17 | Yamatake Honeywell Co Ltd | Cage type regulating valve |
| CN201818868U (en) * | 2010-06-10 | 2011-05-04 | 杭州杭辅电站辅机有限公司 | High-temperature and high-pressure temperature and pressure relief valve |
| CN202431990U (en) * | 2012-01-10 | 2012-09-12 | 杭州佳能阀门有限公司 | Pneumatic hard seal quick switching valve |
| CN203067789U (en) * | 2012-12-14 | 2013-07-17 | 中核苏阀科技实业股份有限公司 | Double-hard-sealing sleeve type regulating valve with flexible structure |
| CN203189744U (en) * | 2013-04-18 | 2013-09-11 | 宣达实业集团浙江特种泵阀有限公司 | Regulating valve |
-
2013
- 2013-12-07 CN CN201310676789.8A patent/CN103644340A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3892394A (en) * | 1973-08-06 | 1975-07-01 | Pennsylvania Engineering Corp | Metallurgical vessel having restraining means |
| JPS6283564A (en) * | 1985-10-09 | 1987-04-17 | Yamatake Honeywell Co Ltd | Cage type regulating valve |
| CN201818868U (en) * | 2010-06-10 | 2011-05-04 | 杭州杭辅电站辅机有限公司 | High-temperature and high-pressure temperature and pressure relief valve |
| CN202431990U (en) * | 2012-01-10 | 2012-09-12 | 杭州佳能阀门有限公司 | Pneumatic hard seal quick switching valve |
| CN203067789U (en) * | 2012-12-14 | 2013-07-17 | 中核苏阀科技实业股份有限公司 | Double-hard-sealing sleeve type regulating valve with flexible structure |
| CN203189744U (en) * | 2013-04-18 | 2013-09-11 | 宣达实业集团浙江特种泵阀有限公司 | Regulating valve |
Non-Patent Citations (1)
| Title |
|---|
| 张清双等: "《阀门手册--选型》", 31 January 2013, 化学工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104482222A (en) * | 2014-12-17 | 2015-04-01 | 杭州华惠阀门有限公司 | Steam regulating valve |
| CN106151531A (en) * | 2015-04-03 | 2016-11-23 | 无锡鑫华控阀业有限公司 | Pottery baiting valve |
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| PB01 | Publication | ||
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Application publication date: 20140319 |