GB783101A - Improvements relating to steam valves - Google Patents

Improvements relating to steam valves

Info

Publication number
GB783101A
GB783101A GB3284254A GB3284254A GB783101A GB 783101 A GB783101 A GB 783101A GB 3284254 A GB3284254 A GB 3284254A GB 3284254 A GB3284254 A GB 3284254A GB 783101 A GB783101 A GB 783101A
Authority
GB
United Kingdom
Prior art keywords
valve
valves
diaphragm
spindle
steam
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
Application number
GB3284254A
Inventor
Reginald George Whitehouse
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB3284254A priority Critical patent/GB783101A/en
Publication of GB783101A publication Critical patent/GB783101A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/42—Applications, arrangements, or dispositions of alarm or automatic safety devices
    • F22B37/44—Applications, arrangements, or dispositions of alarm or automatic safety devices of safety valves
    • F22B37/446—Safety devices responsive to overpressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D17/00—Regulating or controlling by varying flow
    • F01D17/10—Final actuators
    • F01D17/12—Final actuators arranged in stator parts
    • F01D17/14—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits
    • F01D17/141—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path
    • F01D17/145—Final actuators arranged in stator parts varying effective cross-sectional area of nozzles or guide conduits by means of shiftable members or valves obturating part of the flow path by means of valves, e.g. for steam turbines
    • 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
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
    • F16K31/143—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a piston

Abstract

783,101. Valves. BRITISH THOMSONHOUSTON CO., Ltd. Nov. 11, 1955 [Nov. 12, 1954], No. 32842/54. Class 135. In an hydraulicallyoperated emergency stop valve for a steam turbine, comprising a balanced main steam valve 5 mounted in the valve inlet chamber 1 and a pilot by-pass valve 6, the operating spindle 8 common to both valves is made in two parts connected together by a thrust bearing 11, the lower rotatable part being operable through bevel gearing and a handwheel 10 and screwthreadedly connected to a spring-loaded, piston-like member 4 engageable with a seating 15. The member 4 carries a flexible diaphragm 18 which coacts with a seating 16 prior to the engagement of the seating 15 by the member 4. To set the valve in its normal open position the handwheel 10 is first rotated in a valve closing direction to move the member 4 upwardly against its spring to seat the diaphragm 18. Emergency trip gear is then set to establish oil pressure beneath the diaphragm which opposes the steam pressure and the spring whence the valves 5 and 6 may be manually opened and will remain open until the emergency gear trips or a failure in the oil supply occurs. When the valves are open leakage of steam past the upper part of the spindle is prevented by the engagement of a piston member 13 on a spindle guide bush 9. The flexibility of the diaphragm ensures that when the valves are open the member 13 and the diaphragm 16 both remain seated despite any expansion differences between the spindle and valve body. A strainer is fitted in the inlet chamber and any leakage past the spindle that might occur escapes through an outlet 14. Specification 611,691 is referred to.
GB3284254A 1954-11-12 1954-11-12 Improvements relating to steam valves Expired GB783101A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3284254A GB783101A (en) 1954-11-12 1954-11-12 Improvements relating to steam valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3284254A GB783101A (en) 1954-11-12 1954-11-12 Improvements relating to steam valves

Publications (1)

Publication Number Publication Date
GB783101A true GB783101A (en) 1957-09-18

Family

ID=10344798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3284254A Expired GB783101A (en) 1954-11-12 1954-11-12 Improvements relating to steam valves

Country Status (1)

Country Link
GB (1) GB783101A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073824B (en) * 1960-01-21 Ateliers de Constructions Metalliques et Mecaniques GIOVANOLA Freres S.A., Monthey (Schweiz) Valve with closing spring for pressure medium and manual drive
CN102191953A (en) * 2011-05-26 2011-09-21 山东青能动力股份有限公司 Steam turbine single-valve adjusting valve
CN102787871A (en) * 2012-07-10 2012-11-21 东方电气集团东方汽轮机有限公司 Main steam valve of steam turbine
WO2017213160A1 (en) * 2016-06-10 2017-12-14 株式会社荏原エリオット Main stop valve
CN108397240A (en) * 2018-05-12 2018-08-14 王艺凤 A kind of steam turbine is into the steam control valve institution of distributing gas
CN113280180A (en) * 2021-05-25 2021-08-20 梁秋荧 Pneumatic actuator internal transmission mechanism with self-locking function
CN114575940A (en) * 2022-03-09 2022-06-03 中国船舶重工集团公司第七0三研究所 Integrated marine valve cavity structure of arranging

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073824B (en) * 1960-01-21 Ateliers de Constructions Metalliques et Mecaniques GIOVANOLA Freres S.A., Monthey (Schweiz) Valve with closing spring for pressure medium and manual drive
CN102191953A (en) * 2011-05-26 2011-09-21 山东青能动力股份有限公司 Steam turbine single-valve adjusting valve
CN102191953B (en) * 2011-05-26 2013-08-21 山东青能动力股份有限公司 Steam turbine single-valve adjusting valve
CN102787871A (en) * 2012-07-10 2012-11-21 东方电气集团东方汽轮机有限公司 Main steam valve of steam turbine
CN102787871B (en) * 2012-07-10 2014-12-10 东方电气集团东方汽轮机有限公司 Main steam valve of steam turbine
WO2017213160A1 (en) * 2016-06-10 2017-12-14 株式会社荏原エリオット Main stop valve
CN108397240A (en) * 2018-05-12 2018-08-14 王艺凤 A kind of steam turbine is into the steam control valve institution of distributing gas
CN113280180A (en) * 2021-05-25 2021-08-20 梁秋荧 Pneumatic actuator internal transmission mechanism with self-locking function
CN113280180B (en) * 2021-05-25 2022-12-13 郝工自控阀门有限公司 Pneumatic actuator internal transmission mechanism with self-locking function
CN114575940A (en) * 2022-03-09 2022-06-03 中国船舶重工集团公司第七0三研究所 Integrated marine valve cavity structure of arranging

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