GB356856A - Improvements in or relating to control gear associated with stop valves - Google Patents

Improvements in or relating to control gear associated with stop valves

Info

Publication number
GB356856A
GB356856A GB20377/30A GB2037730A GB356856A GB 356856 A GB356856 A GB 356856A GB 20377/30 A GB20377/30 A GB 20377/30A GB 2037730 A GB2037730 A GB 2037730A GB 356856 A GB356856 A GB 356856A
Authority
GB
United Kingdom
Prior art keywords
valve
spring
gear
control
pressure
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
GB20377/30A
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.)
Siemens Schuckertwerke AG
Siemens AG
Original Assignee
Siemens Schuckertwerke AG
Siemens AG
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 Siemens Schuckertwerke AG, Siemens AG filed Critical Siemens Schuckertwerke AG
Publication of GB356856A publication Critical patent/GB356856A/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
    • F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
    • F01D21/16—Trip gear
    • F01D21/18—Trip gear involving hydraulic means
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

356,856. Engine stop-gear. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. July 4, 1930, No. 20377. Convention date, July 5, 1929. [Class 122 (iv).] A control gear for large steam driven machines comprises several rapid action stop valves connected in parallel, one of which is adapted to close automatically by a spring under the control of liquid pressure controlled by emergency auxiliary gear, while the remaining valves are provided with hydraulic gear controlled by hand whereby they are adapted to be closed gradually in addition to the control by emergency auxiliary gear whereby they are enabled to close rapidly under the action of a spring. The valve 1 is opened and held open agains the action of a spring by liquid pressure supplied through a pipe 13, the opening being regulated by a hand-wheel 50. The valve 2 is loaded by a spring 18 and is opened by liquid pressure acting on a piston 17 under the control of a relay piston valve. The relay valve comprises a pair of pistons 26, 27 connected by a spindle 25 and operates to connect the pressure chamber 21 either to the pressure supply pipes 19 or to the exhaust 24 and spring chamber 22. To operate the valve slowly the control valve 30 is turned to admit pressure from the pipe 13 to the space above the piston 26, when the spring 28 gradually moves the valve to shut off the pressure supply and open the exhaust. To close the valve rapidly the pressure is relieved in the pipe 19 by auxiliary emergency gear.
GB20377/30A 1929-07-05 1930-07-04 Improvements in or relating to control gear associated with stop valves Expired GB356856A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE356856X 1929-07-05

Publications (1)

Publication Number Publication Date
GB356856A true GB356856A (en) 1931-09-17

Family

ID=6290394

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20377/30A Expired GB356856A (en) 1929-07-05 1930-07-04 Improvements in or relating to control gear associated with stop valves

Country Status (2)

Country Link
FR (1) FR698283A (en)
GB (1) GB356856A (en)

Also Published As

Publication number Publication date
FR698283A (en) 1931-01-29

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