GB750343A - Improvements in control gear for steam turbines - Google Patents

Improvements in control gear for steam turbines

Info

Publication number
GB750343A
GB750343A GB2381553A GB2381553A GB750343A GB 750343 A GB750343 A GB 750343A GB 2381553 A GB2381553 A GB 2381553A GB 2381553 A GB2381553 A GB 2381553A GB 750343 A GB750343 A GB 750343A
Authority
GB
United Kingdom
Prior art keywords
servomotor
valve
pressure
turbine
actuating
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
GB2381553A
Inventor
William Twynham
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB2381553A priority Critical patent/GB750343A/en
Publication of GB750343A publication Critical patent/GB750343A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
    • F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
    • F01D17/26—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical fluid, e.g. hydraulic

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Turbines (AREA)

Abstract

750,343. Fluid-pressure servomotor-control systems. ENGLISH ELECTRIC CO., Ltd. Aug. 27, 1954 [Aug. 28, 1953], No. 23815/53. Class 135. A hydraulic system including a servomotor for actuating the main steam valve of a turbine is controlled from a speed governor and by boiler pressure, and the variable hydraulic pressure actuating the servomotor is controlled by a leak responsive to boiler pressure in the sense of reducing the steam supply to the turbine with falling boiler pressure down to a quantity corresponding to a predetermined minimum load to be left on the turbine. The invention is described in connection with the control system disclosed in Specification 677,097. The pressure controlling the servomotor 25 actuating the turbine inlet valve 28 is subject to two variable leaks, one under the control of the speed governor 1 and the other, 152, under the control of the boiler pressure. The latter is applied to a bellows 129 which, through a floating lever 105, actuates a valve 115 controlling a servomotor 125 actuating the needle leak valve 152, and a feedback from the servomotor to valve 115 is obtained by connecting the servomotor to the floating lever 105. The control pressure produced in conduit 154 is fed back to act on a cylinder 119 which constitutes a seat for valve 115 and when, on a falling boiler pressure, the pressure acting on cylinder 119 falls sufficiently low for it to be overcome by the adjustable loading spring 118 of the cylinder, the latter will be moved down to recentre valve 115, and the turbine inlet valve 28 will be arrested at the position corresponding to the minimum load it is desired to keep on the turbine.
GB2381553A 1953-08-28 1953-08-28 Improvements in control gear for steam turbines Expired GB750343A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2381553A GB750343A (en) 1953-08-28 1953-08-28 Improvements in control gear for steam turbines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2381553A GB750343A (en) 1953-08-28 1953-08-28 Improvements in control gear for steam turbines

Publications (1)

Publication Number Publication Date
GB750343A true GB750343A (en) 1956-06-13

Family

ID=10201760

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2381553A Expired GB750343A (en) 1953-08-28 1953-08-28 Improvements in control gear for steam turbines

Country Status (1)

Country Link
GB (1) GB750343A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932306A (en) * 1958-06-10 1960-04-12 Westinghouse Electric Corp Regulator for a prime mover utilizing an elastic motive fluid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932306A (en) * 1958-06-10 1960-04-12 Westinghouse Electric Corp Regulator for a prime mover utilizing an elastic motive fluid

Similar Documents

Publication Publication Date Title
US2978166A (en) Compressor bleed control
GB994766A (en) Improvements in and relating to steam power plant
GB750343A (en) Improvements in control gear for steam turbines
GB1185578A (en) Improvements in Control Systems for Steam Turbine Power Plant
GB459893A (en) Improvements in or relating to fluid-operated regulators
US2630814A (en) Stability of hydraulic turbine regulators
GB866985A (en) Multiple purpose hydraulic valve
US3095702A (en) Afterburner fuel control
ES330880A1 (en) Improvements in fuel regulation devices. (Machine-translation by Google Translate, not legally binding)
GB1080124A (en) Gas turbine engine fuel control
GB937168A (en) Steam temperature regulation in steam generators
US2911790A (en) Computing device for fuel control
US3953968A (en) Apparatus and method for governing speed and acceleration of a gas turbine system
GB1219716A (en) Load dividing control for multiple engine drive
GB845013A (en) Regulation of thermal power plants
US3277911A (en) Governor control for a fuel system of a gas turbine engine
GB498351A (en) Improvements in and relating to governing mechanism for elastic fluid turbines
US3011310A (en) Fuel supply system
US3662546A (en) Fluid pressure actuated device and a gas turbine fuel control system incorporating such device
US3274773A (en) Governor control for a fuel system of a gas turbine power-producing plant
GB859687A (en) Means for controlling a physical variable
GB998758A (en) Improvements relating to the control of feed for forced-flow steam boilers
GB949031A (en) Improvements in the pitch control of variable pitch vanes in axial flow compressors
GB923035A (en) Regulation of vapour generators of the forced-flow, once-through type
ES273311A1 (en) Isochronous governor