GB564519A - Improved barring mechanism - Google Patents

Improved barring mechanism

Info

Publication number
GB564519A
GB564519A GB3525/43A GB352543A GB564519A GB 564519 A GB564519 A GB 564519A GB 3525/43 A GB3525/43 A GB 3525/43A GB 352543 A GB352543 A GB 352543A GB 564519 A GB564519 A GB 564519A
Authority
GB
United Kingdom
Prior art keywords
valve
pipes
oil
spring
pistons
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
GB3525/43A
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.)
SVENSKA TURBINFAB AB
Svenska Turbinfabriks Ljungstrom AB
Original Assignee
SVENSKA TURBINFAB AB
Svenska Turbinfabriks Ljungstrom AB
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 SVENSKA TURBINFAB AB, Svenska Turbinfabriks Ljungstrom AB filed Critical SVENSKA TURBINFAB AB
Publication of GB564519A publication Critical patent/GB564519A/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
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0716—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides with fluid passages through the valve member
    • 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
    • F01D25/00—Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/34—Turning or inching gear

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

564,519. Turning - gear. SVENSKA TURBINFABRIKS AKTIEBOLAGET LJUNGSTROM. March. 3, 1943, No. 3525. Convention date, April 9, 1942. [Class 7 (v)] [Also in Groups XXVI and XXIX] In a hydraulic barring mechanism for the rotors of turbines, engines, &c., in which fluidactuated pistons 11 act through pivoted pawls 14 engaging wheels 5 on the shafts 2 of the rotor 1, automatic means is provided for limiting the pressure of the fluid on the pistons at the end of their stroke by opening a fluid outlet under the control of the, fluid pressure ; the shafts 2 may be the oppositely rotating shafts of a radial-flow turbine of the double-rotation type. At the end of the return stroke, effected by a spring 17, the pawl is withdrawn from the wheel 5 by the engagement of a lug 18 on the pawl with a member 47. The supply of the pressure fluid (e.g. oil) from a pump 12 through pipes 23 is controlled by a two-way valve 15, Fig. 2, comprising pistons 261, 26<11> integral with a stem 26 and operated by a handle 28. In the normal position shown, the valve is pressed by a spring 27 against the bottom of the casing, the conduit 16 being connected to a return conduit 22 and the pipes 23 being cut off from the pump. Any liquid remaining in the pipes 23 can escape through a discharge pipe 34. On raising the valve to its -upper position, the conduits 16, 23 are connected and the pistons 11 operated. A spring-loaded safety valve 29 allows any excess pressure to escape to a discharge pipe 35. Oil from the hydraulic cylinders 7 may be conveyed by pipes 20 to the bearings 4 of the rotors 1 to facilitate the barring operation. In a modification, Fig. 5, oil for lubrication is conveyed from the twoway valve 15 direct to the rotor bearings before its admission to the hydraulic cylinders. For this purpose the valve member 26<11> is fitted with a sleeve valve 40 normally held by a spring 41. on a seat in the valve member 26<11> so that when the valve 15 is opened, oil from the pump conduit 16 first passes through an outlet 20 to the rotor bearings, until its pressure is sufficient to raise the valve 40 against its spring 41 and admit the oil through the pipes 23 to the hydraulic cylinders.
GB3525/43A 1942-04-09 1943-03-03 Improved barring mechanism Expired GB564519A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE564519X 1942-04-09

Publications (1)

Publication Number Publication Date
GB564519A true GB564519A (en) 1944-10-02

Family

ID=6567013

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3525/43A Expired GB564519A (en) 1942-04-09 1943-03-03 Improved barring mechanism

Country Status (1)

Country Link
GB (1) GB564519A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841119A (en) * 1949-12-12 1958-07-01 Segerstad Carl Gustaf Hard Af Operating mechanism
US4129064A (en) * 1976-04-08 1978-12-12 Fahim Atef E F Fluid operated stepping motor
US4267740A (en) * 1978-09-14 1981-05-19 Bbc Brown, Boveri & Co., Ltd. Shaft-turning device
GB2140130A (en) * 1983-05-18 1984-11-21 Joy Mfg Co Improvements in or relating to a hydraulic valve
CN101787905A (en) * 2010-04-12 2010-07-28 杭州汽轮机股份有限公司 Safe extracting device for electric barring gear
EP2757230A1 (en) 2013-01-16 2014-07-23 Alstom Technology Ltd Method for barring a rotor of a turbomachine and barring apparatus for conducting such method
CN108386241A (en) * 2018-04-20 2018-08-10 中国电建集团河南工程有限公司 Hydraulic chain automatic barring gear

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2841119A (en) * 1949-12-12 1958-07-01 Segerstad Carl Gustaf Hard Af Operating mechanism
US4129064A (en) * 1976-04-08 1978-12-12 Fahim Atef E F Fluid operated stepping motor
US4267740A (en) * 1978-09-14 1981-05-19 Bbc Brown, Boveri & Co., Ltd. Shaft-turning device
GB2140130A (en) * 1983-05-18 1984-11-21 Joy Mfg Co Improvements in or relating to a hydraulic valve
CN101787905A (en) * 2010-04-12 2010-07-28 杭州汽轮机股份有限公司 Safe extracting device for electric barring gear
CN101787905B (en) * 2010-04-12 2013-04-17 杭州汽轮机股份有限公司 Safe extracting device for electric barring gear
EP2757230A1 (en) 2013-01-16 2014-07-23 Alstom Technology Ltd Method for barring a rotor of a turbomachine and barring apparatus for conducting such method
US9970328B2 (en) 2013-01-16 2018-05-15 Ansaldo Energia Ip Uk Limited Method for barring a rotor of a turbomachine and barring apparatus for conducting such method
CN108386241A (en) * 2018-04-20 2018-08-10 中国电建集团河南工程有限公司 Hydraulic chain automatic barring gear
CN108386241B (en) * 2018-04-20 2023-09-29 中国电建集团河南工程有限公司 Hydraulic chain type automatic jigger

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