• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1522468 Helico-centrifugal pumps SUNDSTRAND CORP 18 April 1977 [7 May 1976] 15987/77 Heading F1C Two diffusers 21, 22 are provided to receive the discharge from the pump impeller 16, the larger diffuser 21 being closed at low flow-rates by means of an axially slidable sleeve valve 23. Each diffuser comprises two volutes, approximately 180 degrees apart, discharging to an outlet pipe 26 in the case of the diffuser 21 and to an outlet pipe 29 in the case of the diffuser 22. The pump supplies fuel to an aircraft engine. When a high fuel flow-rate is demanded, the engine fuel control unit 48 supplies a pressure signal via a line 50 to shift a spool valve 47 to the left to admit fuel from the outlet pipe 29 to a chamber 37 to counterbalance the pressure within a chamber 36, whereupon the difference between the pressures acting on the ends 31, 30 of the sleeve valve 23 shifts the latter to the right to open the diffuser 21.
    公开号:SU784808A3
    申请号:SU772479556
    申请日:1977-05-06
    公开日:1980-11-30
    发明作者:Л.Брэккен Роберт
    申请人:Сандстр Энд Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to the field of pump construction, in particular to centrifugal pumps, for example, as an aircraft engine fuel pump.
    A centrifugal pump is known that contains an impeller mounted on a shaft in a housing with a suction and main discharge nozzles, the latter of which is provided with an axially movable gate valve made in the form of a sleeve located concentrically with the impeller and driven in the form of a hydraulic control valve flj. 15
    A disadvantage of the known pump is the impossibility of automatically adjusting its performance, which is dictated by the mode of operation of the pump in the fuel system 20 of the aircraft engine.
    The aim of the invention is to automate, regulate pump performance.
    The goal is achieved by the fact that the pump 25 is provided with an additional pressure pipe located coaxially with the main pipe, an annular groove is made in the housing, and the sleeve has a collar placed in the latter with the formation of 30
    Two cavities, one of which is located on the suction side of the demo pipe, are in communication with an additional pressure pipe, the other with a control valve, the latter being spring-loaded and connected to the suction pipe and an additional pressure pipe.
    FIG. 1 schematically shows a centrifugal pump, a longitudinal section; FIG. 2 - part of the pump with the extreme left position of the sleeve; in fig. 3 - the same, with the extreme right position of the sleeve.
    The pump contains the impeller 1, the installation of narwhal 2 in the housing 3, having a suction 4 and the main pressure 5 nozzles, respectively. The main pressure nozzle 5 is provided with an axially movable gate valve made in the form of a sleeve 6, which is located concentric with the impeller 1 and is actuated in the form of a hydraulic control valve 7.
    权利要求:
    Claims (1)
    [1]
    1. Swiss patent number 578686, cl. F 04 D 15/00, 1976.
    2 /
    f at.f
    类似技术:
    公开号 | 公开日 | 专利标题
    SU784808A3|1980-11-30|Centrifugal pump
    US5442922A|1995-08-22|Fuel staging system
    GB1445016A|1976-08-04|Fluid delivery systems
    US2410774A|1946-11-05|Fuel injection metering mechanism
    US3067689A|1962-12-11|Variable capacity fluid supply
    US3356034A|1967-12-05|Fluid pump flow bypass control
    US2837148A|1958-06-03|Fuel metering valve
    US2566734A|1951-09-04|Liquid fuel combustion system
    US2785634A|1957-03-19|Fluid pressurizing apparatus
    US3490377A|1970-01-20|Pump
    US3658440A|1972-04-25|Dual-element centrifugal pump pressure responsive flow regulator means
    US3360940A|1968-01-02|Fuel supply system for a jet propulsion engine including reheaters
    GB1058926A|1967-02-15|Gas turbine engine control apparatus
    US1374747A|1921-04-12|Changeable centrifugal pump
    US2874766A|1959-02-24|Liquid fuel supply systems for gas turbine engines
    RU2289708C2|2006-12-20|Gas-turbine engine control device
    US2988885A|1961-06-20|Pump control
    SU883559A2|1981-11-23|Centrifugal pump
    GB608860A|1948-09-22|Improvements in fuel supply systems
    GB1112481A|1968-05-08|Fuel supply systems for jet propulsion engines
    SU754113A1|1980-08-07|Multistage centrifugal pump
    GB1072378A|1967-06-14|Improvements in or relating to hydraulically actuated flexible chamber pumps
    US2879716A|1959-03-31|Control means for motor driven pumps
    GB720526A|1954-12-22|Improvements in booster pumps
    GB1470254A|1977-04-14|Centrifugal pump with regulating mechanism
    同族专利:
    公开号 | 公开日
    JPS644079B2|1989-01-24|
    IL51923A|1980-05-30|
    US4094613A|1978-06-13|
    FR2350483B1|1984-01-13|
    DE2716546A1|1977-11-24|
    IL51923D0|1977-06-30|
    JPS52135402A|1977-11-12|
    FR2350483A1|1977-12-02|
    GB1522468A|1978-08-23|
    CA1060265A|1979-08-14|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH133892A|1928-07-18|1929-06-30|Sulzer Ag|Centrifugal pump.|
    US2341871A|1939-07-29|1944-02-15|Oerlikon Maschf|Centrifugal blower with spiral casing|
    DE719458C|1940-01-14|1942-04-09|Schiff Und Maschb Ag Deutsche|Centrifugal blower for reversible internal combustion engines|
    GB559840A|1942-02-13|1944-03-07|Oerlikon Maschf|Improvements in or relating to centrifugal blowers|
    US2435836A|1944-12-13|1948-02-10|Gen Electric|Centrifugal compressor|
    CH309294A|1951-12-15|1955-08-31|Reinecke Hans|Housing for centrifugal pumps.|
    US2786420A|1952-03-27|1957-03-26|Stanley G Harwood|Pressure controlled pump|
    GB1036407A|1963-08-10|1966-07-20|Lucas Industries Ltd|Centrifugal pumps|
    DE1628369B1|1967-10-25|1971-02-04|Rheinstahl Henschel Ag|Radial fan or pump with two or more blade rings|
    US3504986A|1968-03-12|1970-04-07|Bendix Corp|Wide range inducer|
    BE793550A|1971-12-29|1973-04-16|Gen Electric|CENTRIFUGAL PUMP WITH ADJUSTABLE DIFFUSER|
    CH555981A|1972-09-05|1974-11-15|Saurer Ag Adolph|SYSTEM FOR MIXING AND CIRCULATION OF HEAT CARRIERS.|DE2804308A1|1978-02-01|1979-09-06|Siemens Ag|PROCEDURE FOR EQUIPPING CIRCUIT BOARDS WITH COMPONENTS USING AN EQUIPMENT AID|
    US4643639A|1984-12-24|1987-02-17|Sundstrand Corporation|Adjustable centrifugal pump|
    US5082428A|1990-08-16|1992-01-21|Oklejas Robert A|Centrifugal pump|
    US5214920A|1990-11-27|1993-06-01|Leavesley Malcolm G|Turbocharger apparatus|
    WO2001055597A1|2000-01-26|2001-08-02|Tesma International, Inc.|Variable flow water pump|
    CA2385897C|2001-05-10|2010-07-27|Tesma International Inc.|Variable flow impeller-type water pump with movable shroud|
    US7251925B2|2004-10-14|2007-08-07|Hamilton Sundstrand Corporation|Pressure-based fuel metering unit|
    AU2010363355A1|2010-11-03|2013-03-14|Danfoss A/S|Centrifugal compressor with fluid injector diffuser|
    DE102011113040B3|2011-09-09|2012-04-26|Geräte- und Pumpenbau GmbH Dr. Eugen Schmidt|Controllable coolant pump for supplying coolant to e.g. cylinder head of internal combustion engine, has outflow opening enclosed by ring seal, which is arranged in chamber rear wall and actively connected with disk in rear end position|
    EP2898220B1|2012-09-18|2016-11-30|Grundfos Holding A/S|Pump device|
    CN105051372B|2013-01-31|2017-05-31|丹佛斯公司|The centrifugal compressor of the opereating specification with extension|
    US9382911B2|2013-11-14|2016-07-05|Danfoss A/S|Two-stage centrifugal compressor with extended range and capacity control features|
    US10962016B2|2016-02-04|2021-03-30|Danfoss A/S|Active surge control in centrifugal compressors using microjet injection|
    RU170010U1|2016-09-28|2017-04-11|Валентина Ильинична Жушман|SINGLE AUGER PUMP PUMP|
    FR3112823A1|2020-07-23|2022-01-28|Safran Aircraft Engines|double volute centrifugal pump with non-linear increasing section|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US05/684,335|US4094613A|1976-05-07|1976-05-07|Variable output centrifugal pump|
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