ES339981A1 - Improvements in or relating to Overload Protection Apparatus for the Propulsive Engines of Ships having Variable Pitch Blade Screws. - Google Patents

Improvements in or relating to Overload Protection Apparatus for the Propulsive Engines of Ships having Variable Pitch Blade Screws.

Info

Publication number
ES339981A1
ES339981A1 ES339981A ES339981A ES339981A1 ES 339981 A1 ES339981 A1 ES 339981A1 ES 339981 A ES339981 A ES 339981A ES 339981 A ES339981 A ES 339981A ES 339981 A1 ES339981 A1 ES 339981A1
Authority
ES
Spain
Prior art keywords
pitch
contactor
ram
cam
ships
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
ES339981A
Other languages
Spanish (es)
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.)
Financ Et Ind Des A & C B Soc
Original Assignee
Financ Et Ind Des A & C B Soc
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 Financ Et Ind Des A & C B Soc filed Critical Financ Et Ind Des A & C B Soc
Publication of ES339981A1 publication Critical patent/ES339981A1/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H3/00—Propeller-blade pitch changing
    • B63H3/10—Propeller-blade pitch changing characterised by having pitch control conjoint with propulsion plant control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2710/00—Control of valve gear, speed or power
    • F01L2710/006—Safety devices therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Ocean & Marine Engineering (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Control Of Eletrric Generators (AREA)
  • Transmission Devices (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Overloading of an engine driving a ships variable (reversible) pitch propeller is prevented by a cam A connected to a controller or the engine fuel pump actuating a contactor 1 which de-energizes a solenoid operated valve E1, thereby stopping flow to and from the hydraulic ram V of the pitch changing mechanism, thus arresting change of pitch, further movement of the cam A resulting in further overload actuating a second contactor 2 which causes energization of the valve E1 resulting in supply to the hydraulic ram V in a direction to bring about a change of pitch in the reverse direction, i.e. if blade pitch is being increased actuation of contactor 1 arrests the increase and subsequent actuation of contactor 2 will then reduce the pitch. Hydraulic supply is through a valve E2 which is closed on operation of the contactor 1 so that the supply is through a restricted by-pass RD, the ram V thus operating slowly in the overload range. Reversers I1-I4, normally open when the ram V is in the zero pitch position, are closed one way or the other by a cam B whose movement corresponds to the movement of the ram V when the latter is in a position corresponding to ahead or astern pitch.
ES339981A 1966-06-07 1967-04-29 Improvements in or relating to Overload Protection Apparatus for the Propulsive Engines of Ships having Variable Pitch Blade Screws. Expired ES339981A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR64505A FR1489156A (en) 1966-06-07 1966-06-07 Improvements to protection against overload of propulsion engines on board ships fitted with steerable propellers

Publications (1)

Publication Number Publication Date
ES339981A1 true ES339981A1 (en) 1968-05-16

Family

ID=8610346

Family Applications (1)

Application Number Title Priority Date Filing Date
ES339981A Expired ES339981A1 (en) 1966-06-07 1967-04-29 Improvements in or relating to Overload Protection Apparatus for the Propulsive Engines of Ships having Variable Pitch Blade Screws.

Country Status (5)

Country Link
DE (1) DE1506824B2 (en)
ES (1) ES339981A1 (en)
FR (1) FR1489156A (en)
GB (1) GB1172766A (en)
SE (1) SE336541B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3225168A1 (en) * 1982-07-06 1984-01-12 J.M. Voith Gmbh, 7920 Heidenheim OVERLOAD PROTECTION DEVICE FOR SHIP PROPELLERS, IN PARTICULAR CYCLOIDAL PROPELLERS

Also Published As

Publication number Publication date
GB1172766A (en) 1969-12-03
FR1489156A (en) 1967-07-21
DE1506824B2 (en) 1977-06-23
DE1506824A1 (en) 1969-10-30
SE336541B (en) 1971-07-05

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