• 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:
    A high-pressure trip valve useful in hydraulic protection systems such as emergency trip systems applied to rotating fluid-driven machinery. Hydraulic pressure is applied to opposite faces of a piston head which controls the seating and unseating of a pilot valve. The piston also controls a main valve. Unseating the pilot valve causes the trip mechanism to be reset while unseating the main valve causes the trip mode to be completed. Therebetween a special relief means will cause a trip when the pilot valve is almost seated and the main valve is almost unseated.
    公开号:SU820672A3
    申请号:SU742007284
    申请日:1974-03-22
    公开日:1981-04-07
    发明作者:Андриан Эггенбергер Маркус
    申请人:Дженерал Электрик Компани (Фирма)；
    IPC主号:
    专利说明:

    (54) DISCONNECT VALVE
    I
    The invention relates to pipe fittings, namely, valves used in pressure regulators of the working fluid in emergency shutdown systems for rotating devices with a hydraulic motor.
    A shut-off valve for regulating the flow of fluid from a high pressure source to a sensitive device of a turbine control system and a relief tank is known, which contains a main distribution valve and a spool coaxially integrated into it, which is rigidly connected to the piston and controlled by the solenoid valve 1.
    A disadvantage of this device is its low reliability, due to the fact that a slight fluctuation in the pressure of the working medium in the spool can lead to an involuntary closing of the valve.
    The purpose of the invention is to increase the reliability of the device.
    This objective is achieved in that the housing is divided into four coaxial chambers, the first of which, representing the overgap cavity, is connected to an external solenoid relief valve, the second, representing the chaff cavity, is connected to an external high pressure source and a solenoid relief valve, the third chamber Zana with a sensitive device, and the fourth - with a tank. The spool has openings connecting the second and third chambers, 44 the third and fourth chambers are connected by a valve slit, which is blocked by the main distribution valve.
    The drawing shows a longitudinal section of the proposed valve.
    The shut-off valve contains a main control valve 1, controlled by a spool 2 coaxially embedded in it, rigidly connected to the piston 3. The shut-off valve body 4 is divided into four coaxial chambers A, B, C, G. The first A of which is an adrenal cavity is connected to an external solenoid relief valve 5, the second B is a pod fistula, connected to an external high pressure source 6 and a solenoid valve 5, a third chamber C is connected to a sensitive device 7, and a fourth chamber G is connected to a cut reset rvoir 8. In gold
    权利要求:
    Claims (3)
    [1]
    Claim
    A shut-off valve for regulating the flow of fluid from a high pressure source to a sensitive device of the turbine control system and a discharge tank, comprising a main control valve and coaxially controlled spool integrated therein, rigidly connected to the piston and controlled by a solenoid valve, characterized in that, in order to increase a reliable ty body is divided into four coaxial chambers, the first of which, representing the supra-piston cavity, is connected to an external solenoid relief valve, the second A piston cavity that is connected to an external high pressure source and a relief solenoid valve, the third chamber is connected to a sensitive device, and the fourth to a discharge reservoir.
    [2]
    2. Valve according to π. 1, characterized in that the spool holes are made connecting the second and third chambers.
    [3]
    3. The valve according to paragraphs. 1 and 2, characterized in that the third and fourth chambers of the housing are connected by a valve slit overlapped by the main distribution valve.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU820672A3|1981-04-07|Cut off valve
    US4586533A|1986-05-06|Non-flowing modulating pilot operated relief valve
    US3636969A|1972-01-25|Relief and unloading valve
    US3174410A|1965-03-23|Relief valve devices for hydraulic power systems
    US4061271A|1977-12-06|Control system for high pressure hydraulic system
    GB1406326A|1975-09-17|Hydraulic actuator controls disazo pigment
    GB1427503A|1976-03-10|Control system for fluid-driven motors
    GB1508842A|1978-04-26|Automatic pump control system
    US3457941A|1969-07-29|Unloader valve
    US2420890A|1947-05-20|Fluid pressure control system
    EP0050926B1|1984-07-25|Improved expansible tube type valve
    GB1452486A|1976-10-13|Hydraulic fluid flow control valve
    GB576167A|1946-03-21|Improvements in or relating to fluid pressure regulating valves
    US2700983A|1955-02-01|Fluid pressure regulator
    GB1297541A|1972-11-22|
    US3710824A|1973-01-16|High pressure relief valve
    GB1288129A|1972-09-06|
    US3064687A|1962-11-20|Combined accumulator-relief valve
    US2687743A|1954-08-31|Pressure reducing valve with overpressure release
    GB711129A|1954-06-23|Improvements in or relating to fluid pressure operated controlling devices
    GB2151339A|1985-07-17|Pressure relief valves
    US3656708A|1972-04-18|Dump valve
    US4351357A|1982-09-28|Fail safe compensator used in a hydraulic servo control system
    US2431210A|1947-11-18|Valve assembly for hydraulic braking systems
    US3402734A|1968-09-24|Balanced piston relief valve
    同族专利:
    公开号 | 公开日
    DE2407177C3|1981-06-25|
    CH584862A5|1977-02-15|
    DE2407177A1|1974-11-21|
    JPS5834641B2|1983-07-28|
    US3840050A|1974-10-08|
    DE2407177B2|1980-09-11|
    CA996838A|1976-09-14|
    GB1466796A|1977-03-09|
    JPS5029904A|1975-03-26|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2213488A|1938-09-20|1940-09-03|Dowrick Thomas|Whistle valve|
    DE814978C|1949-05-14|1951-09-27|Samson Appbau A G|Control valve with piston balanced single-seat valve cone|
    US2926680A|1957-04-26|1960-03-01|Gen Electric|Emergency governing system for a steam turbine|
    FR1273935A|1960-09-06|1961-10-20|E Huot Soc Nouv Ets|Self-draining valve|
    US3403699A|1965-09-09|1968-10-01|Wagner Electric Corp|Supply and exhaust type control valve|
    US3428090A|1966-06-07|1969-02-18|Atwood & Morrill Co Inc|Shut-off valve|JPS60137839U|1984-02-24|1985-09-12|
    JPH0517446Y2|1987-04-30|1993-05-11|
    US7244222B2|2004-03-05|2007-07-17|S.C. Johnson Home Storage, Inc.|Apparatus for and method of positioning a slider on mating zipper elements|
    US7163133B2|2004-03-05|2007-01-16|S.C. Johnson Home Storage, Inc.|Apparatus for and method of moving a slider along mating zipper elements|
    EP2510197A2|2009-12-11|2012-10-17|BSH Bosch und Siemens Hausgeräte GmbH|Steam removal system, steam station and valve unit|
    CN102644772A|2012-05-08|2012-08-22|温州市金星阀门有限公司|Multifunctional multi-way multi-valve group with ultrahigh pressure|
    CN103511006B|2013-09-26|2015-11-25|浙江华元汽轮机械有限公司|A kind of emergency governor pilot valve|
    US9896962B2|2014-02-28|2018-02-20|General Electric Company|Trip manifold assembly for turbine systems|
    US20200240284A1|2015-12-17|2020-07-30|Mitsubishi Heavy Industries Compressor Corporation|Emergency shut-off device|
    US10337411B2|2015-12-30|2019-07-02|General Electric Company|Auto thermal valvefor dual mode passive cooling flow modulation|
    US10260648B2|2016-04-28|2019-04-16|Technologies Holdings Corp.|Actuating dump valve|
    DE102020201178A1|2020-01-31|2021-08-05|Robert Bosch Gesellschaft mit beschränkter Haftung|Stop valve for a fuel cell system, fuel cell system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US35453073|US3840050A|1973-04-26|1973-04-26|High-pressure trip valve|
    [返回顶部]