CN1015325B - 安全阀控制装置 - Google Patents
安全阀控制装置Info
- Publication number
- CN1015325B CN1015325B CN89107892A CN89107892A CN1015325B CN 1015325 B CN1015325 B CN 1015325B CN 89107892 A CN89107892 A CN 89107892A CN 89107892 A CN89107892 A CN 89107892A CN 1015325 B CN1015325 B CN 1015325B
- Authority
- CN
- China
- Prior art keywords
- valve
- chamber
- servopiston
- piston
- lid
- 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.)
- Expired
Links
Images
Classifications
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/10—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve
- F16K17/105—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with auxiliary valve for fluid operation of the main valve using choking or throttling means to control the fluid operation of the main valve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
- Y10T137/7764—Choked or throttled pressure type
- Y10T137/7768—Pilot controls supply to pressure chamber
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7722—Line condition change responsive valves
- Y10T137/7758—Pilot or servo controlled
- Y10T137/7762—Fluid pressure type
- Y10T137/7769—Single acting fluid servo
- Y10T137/777—Spring biased
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Lift Valve (AREA)
Abstract
安全阀阀盖有在伺服活塞腔中活动的伺服活塞。设先导阀，其阀盖上加关闭方向的预定力，在与这力相当的压力下开启。先导阀两端面各在一活塞腔中。一腔与防过压安全阀保护的腔相通，另一与先导阀流入侧相通，又通过限流器与受保护腔相连。设装置产生活塞对先导阀盖的操纵作用，活塞截面积大于先导阀盖承受另活塞腔压力的面积。先导阀盖的流出侧与伺服活塞远离主盖的一侧相通。在阀体中的布置为先导盖开启时主盖因伺服活塞加载而开放。
Description
本发明与一种安全阀控制装置有关，其阀盖（主盖）有伺服活塞在伺服活塞腔中活动，装置有一个先导阀，其阀盖承受关闭方向的预定的力，而随压在上面的相当于这力的压力反应时开启，一个与先导阀相关的活塞，其两端面各伸入一个活塞腔，一个活塞腔与防过压安全阀保护的腔连接，而另一活塞腔与先导阀的进流侧连接，通过限流器与受保护腔连接，设有装置产生活塞对先导阀盖的操作作用，活塞截面积大于承受另一活塞腔压力的阀盖的截面积。
这种控制装置专利EP.PS110，210号中有揭示，其主盖放在阀体内，使伺服活塞被固定加压到关闭的安全状态，超过安全压力时，先导阀盖开放作卸荷，因而安全阀开放。在这装置中，在安全状态下承受固定加压的伺服活塞腔，可一定程度充注受保护腔室中的蒸汽凝成的冷凝液。先导阀开启时冷凝液蒸发，蒸汽阻止安全阀迅速开放。
本发明的目的，是以此改进上述类型的控制装置，安全阀的开阀动作不因蒸汽形成而受阻。
因此，在本发明中，先导阀盖的出流侧与伺服活塞的远离主盖的一侧接通，在阀体中的安排为：当先导阀盖开启时，伺服活塞的载荷将主阀盖开启。
因此，当伺服活塞腔在关闭的安全状态下，固定保持减压，从而冷凝液不能在腔中形成或收集。仅在先导阀随安全压力的突升反应而开放时，主盖在无障碍下开启，蒸汽流入相应的伺服腔，在伺服活塞上加载。
因此，在安全阀开启前，伺服活塞腔不能收集冷凝液。
下面参照附图详细说明本发明的某些实施方案，附图内容如下：
图1为通过本发明的安全阀的纵向简略剖视，
图2及3各示活塞装置的一种改型。
参看图1右侧，可见安全阀1主要有一阀体2，一个活动阀盖3（主盖）和用一个杆4与之刚性连接的伺服活塞5。阀体2有一个进流腔6，有要求作防过压保护的蒸汽管路（未示）与之连接。阀体2还有一个流出腔7，连接横向孔8，流出管路或排出管路可与之连接。在阀体2中，在腔6及7间设置阀座表面9，与主盖3的匹配密封表面配合。
阀体2中伺服活塞5的两侧，各设一个伺服腔11、12，通过相应导管13、14与孔8连接。一个限流器15设在导管14中的与导管13连接处的上方。一个弹簧16放在腔11中;当安全阀中无压力时，弹簧16将伺服活塞5压到图中上部的位置上，主盖3与阀座表面9密封接触。
图1的阀体2中的安全左阀侧，放置一个先导阀10，阀盖20的顶端（图1）从阀体2上伸出。一个弹簧盘件22放在阀盖20的端上，与弹簧23相连，弹簧23将先导阀盖20，压在阀体2中的阀座表面24上。一个流出腔21围绕表面24上方的先导阀盖20，通过导管25与伺服活塞腔12接通。
一个活塞26和分别围绕活塞26两端面的活塞腔27、28与先导阀10相关。腔27通过导管29与流入腔6接通，并通过有限流器31的导管30，与活塞腔28接通。活塞26有一个杆状延长部32对先导盖20作用。活塞26的直径D，大于先导阀盖20的座表面的内径d。
控制装置运行如下：当含有安全阀1的动力装置正常运行时，主盖3处在关闭位置上，流入腔6中有增压蒸汽。导管29、30与分别相关的活塞腔27、28中也有相同的压强。由于先导阀盖20也在关闭位置上，则腔21、11、12、7中的压强或者低于流入腔6中蒸汽的压强，或无加压。
当流入腔6中的压力增高到临界值时，一旦达到这压力先导阀盖20
便上升，蒸汽便从腔28流入腔21，又从腔21通过导管25流入腔12。由于先导阀盖20的开阀动作，腔28中的压力下降，如果没有活塞26时，便会引起先导阀10迅速关闭。然而，由于腔27中有最高的蒸汽压力作用，而腔28中压力下降，活塞26在差压下被向上推，突出部32接触先导阀盖20，将其进一步开大，并保持开放。于是向伺服活塞腔12继续供给蒸汽，在其中产生压力，在伺服活塞5上作用，将图1中的阀盖3下压。于是阀盖3开放安全阀，蒸汽从腔7及孔8中通过。当腔6中的蒸汽压力突降到先导阀10的闭阀压力以下时，弹簧23将先导阀盖20退到图示的闭阀位置，活塞26退到其原始位置。伺服腔12中的压力，通过导管14及限流器15下降，由于阀盖3上有差压作用，伺服活塞5上升，直至回到其关闭位置上。
因为有活塞26，便可避免将先导阀10连续开闭，即可避免阀的颤动。
图2中方案为图1方案的改型，导管29′不从流入腔6开始，而通过一个直接与阀体2连接的管路（未示），和里面放作防过压保护的腔的储压器（未示）连接。这腔还按图中未示的方法，和安全阀流入腔6连接。但是，如图1的举例，有限流器31的导管30和流入腔6连接。
在图3的方案中，导管29′直接与压力罐连接，有限流器31的导管30不流入腔6的支管，而流入导管29′的支管。
图2及3中方案的运行方式，基本都和图1的控制装置相似。
Claims (1)
1、阀盖(主盖)有伺服活塞在伺服活塞腔中活动的安全阀控制装置，装置有一个先导阀，其阀盖承受关阀方向的一个预定的力，并随与这力相当的压力反应而开放，有一个与先导阀关连的活塞，其两端面各伸入一个活塞腔，一个腔通过防过压安全阀与受保护的腔直接相连，另一腔与先导阀的流入侧相连，并通过一个限流器与受保护的腔相连，设装置产生活塞对先导阀盖的操纵作用，活塞的截面积大于承受另活塞腔的压力的阀盖面积，特征在于先导阀盖的流出侧，与伺服活塞的远离主阀盖的一侧相通，其在阀体中的布置为：当先导阀开启时，主阀盖因伺服活塞加载而开放。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH3822/88 | 1988-10-13 | ||
| CH3822/88A CH675901A5 (zh) | 1988-10-13 | 1988-10-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1041817A CN1041817A (zh) | 1990-05-02 |
| CN1015325B true CN1015325B (zh) | 1992-01-22 |
Family
ID=4264214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89107892A Expired CN1015325B (zh) | 1988-10-13 | 1989-10-12 | 安全阀控制装置 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4977925A (zh) |
| EP (1) | EP0364397A1 (zh) |
| JP (1) | JP2638222B2 (zh) |
| CN (1) | CN1015325B (zh) |
| BR (1) | BR8905180A (zh) |
| CH (1) | CH675901A5 (zh) |
| ZA (1) | ZA897764B (zh) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4041418A1 (de) * | 1990-12-21 | 1992-06-25 | Siemens Ag | Anordnung zur druckabsicherung eines druckbehaelters |
| US5275202A (en) * | 1992-10-15 | 1994-01-04 | Knappco Corporation | Adjustable emergency relief vent with surge protection |
| DE19816463C1 (de) | 1998-04-14 | 1999-06-02 | Siemens Ag | Federbelastetes Tandem-Steuerventil |
| DE19824494C1 (de) * | 1998-06-02 | 1999-08-19 | Siemens Ag | Steuereinrichtung für ein Sicherheitsventil |
| CN1089414C (zh) * | 1998-06-19 | 2002-08-21 | 赵文轩 | 新型安全阀 |
| DE102006007363A1 (de) * | 2006-02-17 | 2007-08-23 | Robert Bosch Gmbh | Vorgesteuertes Druckbegrenzungsventil |
| US8162619B2 (en) * | 2006-08-11 | 2012-04-24 | Hale Products, Inc. | Method for controlling the discharge pressure of an engine-driven pump |
| DE102012006041A1 (de) * | 2012-03-27 | 2013-10-02 | Areva Gmbh | Druckhaltersystem, insbesondere für ein Kernkraftwerk |
| US9435449B2 (en) * | 2012-04-05 | 2016-09-06 | The Boeing Company | Pilot valve controlled positive and negative pressure relief valves |
| DE102016117607A1 (de) * | 2016-09-19 | 2018-03-22 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Druckregelventil für ein Luftaufbereitungssystem eines Nutzfahrzeugs |
| CN110778760B (zh) * | 2019-11-15 | 2021-06-01 | 浙江卡达阀门有限公司 | 一种安全阀 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US833062A (en) * | 1905-09-23 | 1906-10-09 | Foster Engineering Co | Relief-valve. |
| US1110320A (en) * | 1913-06-23 | 1914-09-15 | Chaplin Fulton Mfg Company | Gas relief-valve. |
| US2304323A (en) * | 1941-05-20 | 1942-12-08 | Irvin E Wiegers | Pressure operated throttling valve |
| US2587212A (en) * | 1946-04-20 | 1952-02-26 | Placette Theodore | Relief valve |
| US2573231A (en) * | 1947-12-26 | 1951-10-30 | Bendix Aviat Corp | Pilot-operated relief valve |
| FR1577361A (zh) * | 1968-04-05 | 1969-08-08 | ||
| US3589390A (en) * | 1968-10-23 | 1971-06-29 | White Sales Corp Graham | Pressure relief valve for diesel locomotive compressed air systems |
| DE2202959A1 (de) * | 1972-01-21 | 1973-08-02 | Zvu Chemicka A Potravinarska Z | Hilfsgesteuertes sicherheitsventil |
| US4398393A (en) * | 1981-09-25 | 1983-08-16 | General Electric Company | Steam turbine control apparatus |
| CH663259A5 (de) * | 1982-11-30 | 1987-11-30 | Sulzer Ag | Einrichtung zum steuern eines sicherheitsventils. |
| FR2538493B1 (fr) * | 1982-12-23 | 1986-03-14 | Commissariat Energie Atomique | Soupape de surete a pilotage integre |
-
1988
- 1988-10-13 CH CH3822/88A patent/CH675901A5/de not_active IP Right Cessation
-
1989
- 1989-09-19 EP EP89810703A patent/EP0364397A1/de not_active Withdrawn
- 1989-10-04 US US07/416,877 patent/US4977925A/en not_active Expired - Lifetime
- 1989-10-12 JP JP1264095A patent/JP2638222B2/ja not_active Expired - Lifetime
- 1989-10-12 CN CN89107892A patent/CN1015325B/zh not_active Expired
- 1989-10-12 BR BR898905180A patent/BR8905180A/pt not_active IP Right Cessation
- 1989-10-13 ZA ZA897764A patent/ZA897764B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN1041817A (zh) | 1990-05-02 |
| JPH02146379A (ja) | 1990-06-05 |
| CH675901A5 (zh) | 1990-11-15 |
| EP0364397A1 (de) | 1990-04-18 |
| JP2638222B2 (ja) | 1997-08-06 |
| US4977925A (en) | 1990-12-18 |
| BR8905180A (pt) | 1990-05-15 |
| ZA897764B (en) | 1990-08-29 |
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| C13 | Decision | ||
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