GB822084A - Apparatus for maintaining a constant pressure at varying capacity or a constant capacity at variable pressure in a centrifugal compressor - Google Patents

Apparatus for maintaining a constant pressure at varying capacity or a constant capacity at variable pressure in a centrifugal compressor

Info

Publication number
GB822084A
GB822084A GB12297/57A GB1229757A GB822084A GB 822084 A GB822084 A GB 822084A GB 12297/57 A GB12297/57 A GB 12297/57A GB 1229757 A GB1229757 A GB 1229757A GB 822084 A GB822084 A GB 822084A
Authority
GB
United Kingdom
Prior art keywords
pressure
bellows
pipe
closure
constant
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
GB12297/57A
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.)
Maschinenfabrik Oerlikon AG
Original Assignee
Maschinenfabrik Oerlikon 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 Maschinenfabrik Oerlikon AG filed Critical Maschinenfabrik Oerlikon AG
Publication of GB822084A publication Critical patent/GB822084A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
    • F04D27/02—Surge control
    • F04D27/0253—Surge control by throttling
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/01—Control of flow without auxiliary power
    • G05D7/0193—Control of flow without auxiliary power using hydraulic or pneumatic amplifiers, relays or transmitters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2250/00—Geometry
    • F05D2250/50—Inlet or outlet
    • F05D2250/51—Inlet

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Positive-Displacement Air Blowers (AREA)
  • Centrifugal Separators (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)

Abstract

822,084. Centrifugal compressors. MASCHINENFABRIK OERLIKON. April 15, 1957 [May 22, 1956], No. 12297/57. Class 110 (1). [Also in Group XXIX] The impellers 3 of parallel centrifugal compressors 1, 2 each feed a conduit 12 via a non- return valve 6, venturi 7 and a valve 8 whilst the pressures p1, p2 across the venturi 7 are taken to an anti-surging control 4 and fed into pipes 13, 14, each incorporating a check valve 10; the control 4 is connected to a throttle valve 5 which varies the inlet section of the impeller ducts. The pipe 13 opens directly into a chamber 30 of a regulating device 16 whilst pipe 14 opens into the same chamber when a hinged closure 23 is unseated, which closure is joined by rods 21 to a pair of spring bellows 17, 18, the interior of the former being open to the conduit 12 by a pipe 15. The force exerted by a spring 24 loading the closure 23 may be adjusted manually or by a motor 29. The interior of bellows 18 is open to atmosphere. With the valves 10 open and the pressure px in pipe 15 below the preset value, i.e. that required to overcome the spring 24, the closure 23 remains seated; when the pressure px exceeds the preset value, the pressure in bellows 17 is greater than that in bellows 18 so that the closure 23 is unseated and interconnects pipes 13, 14 whereupon the pressure difference p1-p2 at the control 4 is lessened due to a baffle 9, and the throttle 5 is adjusted until the pressure px again reaches the required level and the system is in equilibrium. The compressors are thereby controlled to give a constant pressure with a variable capacity. In order to maintain a constant capacity with variable pressure a flow meter 31 is provided in the input to the compressors, the pressures on either side of which are fed to the bellows 17, 18 whilst the pipe 15 is disconnected from the bellows 17. In a modification, the chamber 30 opens to atmosphere instead of the pipe 13.
GB12297/57A 1956-05-22 1957-04-15 Apparatus for maintaining a constant pressure at varying capacity or a constant capacity at variable pressure in a centrifugal compressor Expired GB822084A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH822084X 1956-05-22

Publications (1)

Publication Number Publication Date
GB822084A true GB822084A (en) 1959-10-21

Family

ID=4539536

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12297/57A Expired GB822084A (en) 1956-05-22 1957-04-15 Apparatus for maintaining a constant pressure at varying capacity or a constant capacity at variable pressure in a centrifugal compressor

Country Status (1)

Country Link
GB (1) GB822084A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3142259A (en) * 1960-06-15 1964-07-28 Dowty Fuel Syst Ltd Liquid pressure supply system
US4205941A (en) * 1977-05-16 1980-06-03 Office National D'etudes Et De Recherches Aerospatiales (O.N.E.R.A.) Methods and apparatuses for avoiding surging phenomena in compressors
US4662817A (en) * 1985-08-20 1987-05-05 The Garrett Corporation Apparatus and methods for preventing compressor surge
US5827044A (en) * 1997-03-26 1998-10-27 Yazici; Muammer Fan system with variable air volume control

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3142259A (en) * 1960-06-15 1964-07-28 Dowty Fuel Syst Ltd Liquid pressure supply system
US4205941A (en) * 1977-05-16 1980-06-03 Office National D'etudes Et De Recherches Aerospatiales (O.N.E.R.A.) Methods and apparatuses for avoiding surging phenomena in compressors
US4662817A (en) * 1985-08-20 1987-05-05 The Garrett Corporation Apparatus and methods for preventing compressor surge
US5827044A (en) * 1997-03-26 1998-10-27 Yazici; Muammer Fan system with variable air volume control

Similar Documents

Publication Publication Date Title
GB906329A (en) Method and system for controlling a pipeline pump station
US2998256A (en) Vacuum systems
GB1298875A (en) System for supplying gaseous material to a flow of liquid
US2661145A (en) Antisurge control for refrigeration compressors
GB736003A (en) Improvements in or relating to pressure-ratio sensitive mechanisms
GB822084A (en) Apparatus for maintaining a constant pressure at varying capacity or a constant capacity at variable pressure in a centrifugal compressor
US3997282A (en) Pump pressure control device
US2986327A (en) Axial flow centrifugal compressor and surge control system therefor
US2618286A (en) Pneumatic reverse acting relay
US2485113A (en) Isobaric control valve
US2993640A (en) Method of and apparatus for maintaining a constant pressure at varying capacity or a constant capacity at variable pressure in a turbo-compressor
GB847594A (en) Improvements in or relating to gas turbine engine controls
GB915544A (en) Improvements in or relating to apparatus for controlling centrifugal compressors having a variable intake pressure
US2560213A (en) Antidetonant injection system
US2324236A (en) Blower automatic throttle
US2962366A (en) Device for feeding a combustion motor with liquified petroleum gas
GB859668A (en) Improvements relating to control means for air conditioning systems
US2576541A (en) Back-pressure relief valve
US2860657A (en) Regulating valve
ES297849A1 (en) Compressor control valve
GB806219A (en) Multi-stage radial flow compressor and method of operating same
GB888328A (en) Improvements in fuel systems for aircraft gas turbine engines
US2112564A (en) Starting unloader for multistage compressors
GB798709A (en) Improvements in or relating to pressure regulating devices
US3057540A (en) Fluid pressure system