GB1231981A - - Google Patents

Info

Publication number
GB1231981A
GB1231981A GB1231981DA GB1231981A GB 1231981 A GB1231981 A GB 1231981A GB 1231981D A GB1231981D A GB 1231981DA GB 1231981 A GB1231981 A GB 1231981A
Authority
GB
United Kingdom
Prior art keywords
valve
pressure
regulator
steam
servopiston
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
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 filed Critical
Publication of GB1231981A publication Critical patent/GB1231981A/en
Expired legal-status Critical Current

Links

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
    • 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
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/02—Shutting-down responsive to overspeed
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K9/00—Plants characterised by condensers arranged or modified to co-operate with the engines
    • F01K9/04—Plants characterised by condensers arranged or modified to co-operate with the engines with dump valves to by-pass stages

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Control Of Turbines (AREA)

Abstract

1,231,981. Steam turbines. SULZER BROS Ltd. Jan. 6, 1970 [Jan. 8, 1969], No.632/70. Heading F1T. [Also in Division G3] A spill valve 10 in a branch 9 of a line 2 connecting a steam generator 1 to a steam turbine 3, 4 is operated by a servopiston 12 in dependence on the pressure upstream of the valve and is moved to fully open position when the pressure exceeds a predetermined valve and causes a bypass valve 26 to inter-connect the opposite sides of the piston. In the illustrated embodiment, three by-pass valves 26, 26<SP>1</SP>, 26<SP>11</SP> are provided to increase reliability and each valve is controlled by an electromagnet energized by a pressure-sensitive switch 21, 21<SP>1</SP>, 21<SP>11</SP> which may also be arranged to energize one of three switches 40, 40<SP>1</SP>, 40<SP>11</SP> controlling an electromagnetically actuated valve 35. This valve, which may also be operated by an oilpressure failure in the control system, isolates the servopiston 12 from a pilot valve 17 controlled by a regulator 16 having integral action, responsive to steam pressure in the line 2 and supplied with a set valve from a second regulator 43 which adjusts the firing of the steam generator in accordance with the load. The second regulator may also be used to vary the pressure at which the switch controlling the by-pass valve opens. The load 3, 4 consists of high and low-pressure turbines connected by a reheater 5 and provided with speed-responsive valves 7, 8 and a safety valve 6. In a simplified arrangement, the regulator 43 and the valve 35 are omitted and only one bypass valve is provided.
GB1231981D 1969-01-08 1970-01-06 Expired GB1231981A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH16269A CH502513A (en) 1969-01-08 1969-01-08 Overflow valve arranged between the steam generator and consumer

Publications (1)

Publication Number Publication Date
GB1231981A true GB1231981A (en) 1971-05-12

Family

ID=4180663

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1231981D Expired GB1231981A (en) 1969-01-08 1970-01-06

Country Status (8)

Country Link
BE (1) BE744129A (en)
CH (1) CH502513A (en)
DE (1) DE1905769B1 (en)
ES (1) ES375227A1 (en)
FI (1) FI48875C (en)
FR (1) FR2027935A1 (en)
GB (1) GB1231981A (en)
NL (1) NL143680B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982319A1 (en) * 2011-11-07 2013-05-10 Snecma SYSTEM FOR CONTROLLING A TURBOMACHINE PNEUMATIC VALVE

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3524732C1 (en) * 1985-07-11 1986-09-04 Deutsche Babcock Werke AG, 4200 Oberhausen Safety overflow valve

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091577B (en) * 1956-08-18 1960-10-27 C Herbert Zikesch Dipl Ing Switching of a safety valve operated by a control valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982319A1 (en) * 2011-11-07 2013-05-10 Snecma SYSTEM FOR CONTROLLING A TURBOMACHINE PNEUMATIC VALVE

Also Published As

Publication number Publication date
FI48875C (en) 1975-01-10
NL6903158A (en) 1970-07-10
CH502513A (en) 1971-01-31
ES375227A1 (en) 1972-03-16
NL143680B (en) 1974-10-15
FR2027935A1 (en) 1970-10-02
FI48875B (en) 1974-09-30
BE744129A (en) 1970-07-07
DE1905769B1 (en) 1970-10-01

Similar Documents

Publication Publication Date Title
US3998134A (en) Load responsive fluid control valves
US3865514A (en) Power transmission
GB1508842A (en) Automatic pump control system
ES8102632A1 (en) Turbine control system for sliding or constant pressure boilers
ES8503599A1 (en) Engine speed control in propeller pitch control systems
GB1235804A (en) Improvements in valve actuating mechanisms
US3385312A (en) Fluid regulator circuit
GB1306786A (en) Safety operation of fluid-pressure control systems
JPS57171042A (en) Control system for series including internal-combustion engine and hydraulic pump
GB1453750A (en) Hydraulic servo system for steam turbines
GB1267590A (en) Automatic extraction and exhaust pressure type turbine control system
GB1273806A (en) Improvements in or relating to the control of water turbines
GB1231981A (en)
GB1513417A (en) Pressure fluid actuated rapid closure and non-return valve for steam and gas turbines
GB994766A (en) Improvements in and relating to steam power plant
GB1288129A (en)
US3621657A (en) Control installation for the automatic adjustment of the movable guide blades especially of the output turbine of a gas turbine drive unit
GB795345A (en) Arrangement for testing the overspeed safety devices of steam turbines
GB1313971A (en) Ram attitude control system
DE897251C (en) Steam turbine for operation with reheating
GB828858A (en) Improvements in or relating to control systems for variable pitch propellers
GB1037346A (en) A steam turbine system
GB891136A (en) Steam power plants with intermediate reheating
GB1163251A (en) Oil Burner Systems with a least Two Parallel-Fed Burners or at least Two Groups of Parallel-Fed Burners
SU840418A1 (en) Steam turbine control valve drive

Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years