• 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 process and apparatus for operating a turbocompressor having an output at an actual value of flow and pressure and a blow-off valve for regulating the output to prevent surging of the output above a surge limit and to prevent a reduction of the output below a minimum value, with a comparing unit for measuring the actual value, and a controller unit for controlling the blow-off valve in accordance with the output of the comparing unit comprising, forming a first difference value between the theoretical value and the actual value, forming a delayed value from the difference value and thereafter forming a second difference value between the delayed value and the first difference value to control the blow-off valve. The apparatus for effecting the process comprises summing units for forming the various difference values, a delay unit for delaying the first difference value and, in one embodiment, a limiter unit for limiting the second difference value which is thereafter added to the theoretical value before the resulting value is applied to the controller unit for controlling the blow-off valve.
    公开号:SU1041043A3
    申请号:SU792784150
    申请日:1979-06-27
    公开日:1983-09-07
    发明作者:Блотенберг Вильфрид
    申请人:Гутехоффнунгсхютте Штеркраде Аг (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to the protection of turbo compressors against surge.
    A known method of protection against surge of a turbo compressor, equipped with a regulator of the position of the gas bypass valve, by applying to the controller a control signal proportional to the difference between the measured flow rates and the pressure of the gas at the outlet of the compressor 1.
    The known method does not provide the required reliability of protection of the turbocharger against surge.
    The purpose of the invention is to increase reliability.
    This goal is achieved in that according to the surge protection method of a turbo compressor equipped with a gas bypass valve position regulator, by applying a control signal to the regulator input proportional to the difference between the measured flow rates and the gas pressure at the outlet of the compressor, the control signal is pre-amplified and reduced by the amount of time delayed control signal. In addition, control signal size is limited to ii & regulator inlet.
    The control signal is increased by the measured value of the gas pressure at the Compressor Outlet.
    FIG. 1 shows the block diagram of a device implementing a hand-operated method; in fig. 2 - the same, with automatic control.
    The device of FIG. 1 contains a functional converter 1, a first adder 2, a link 3 time delays, an amplifier 4, an electric accumulator 5, a block 6 for selecting the maximum signal, a block 7 for the regulator, a third cooler 8 and a block 9 for manual correction.
    The device of FIG. 2 contains a functional converter 10, a first adder 11, a Eveno 12 delay on time (the second adder 13 a limiter 14, a third adder 15 and a regulator block 16.
    The device of FIG. 1 operates as follows.
    The signal proportional to the measured value of the gas pressure at the outlet of the compressor, through the functional converter 1, is fed to the input of the first adder 2, to which the input of the signal is proportional to the measurement: the value of the gas flow. At the output of the first adder 2, a differential signal is generated, which is fed to the second adder 5 through the amplifier 4 and to the other input of the second cytmaTopa through the link 3 delay
    on time. The differential signal from the output of the second adder enters the regulator block 7 through block 6, realizing the selection of the maximum of the signals arriving at its inputs (a differential signal or a signal coming from the block 9 manual correction). From the output of the regulator, the signal goes to the actuator and simultaneously to the adder 8 to implement feedback during manual override. When the operating point of the supercharger is shifted to the boundary of bleeding, which is observed when approaching the surging zone, the magnitude of the signal transferred to the regulator block is the greater, the greater the speed of movement of the operating point, which is achieved by forming the time difference between the main and delayed signals. When the operating point of the supercharger is shifted from the edge of the bleed, the magnitude of the signal decreases, which is equivalent to a shift of the edge of the bleed closer to the surge area. If necessary, this effect can be prevented by introducing an additional link from the output of the first adder to the input of block b (in Fig. 1, the link is shown by a dotted line).
    In the device shown in FIG. 2, the method is implemented as follows.
    A signal proportional to the measured value of the gas pressure or the output from the compressor, through the functional converter 10, is fed to the input of the first adder 11, to the other input of which a signal is proportional to the measured value of the gas flow. At the output of the first adder, a differential signal is formed, which is fed to the second adder 13 directly and via link 12 of the time delay. The differential signal from the output of the second adder enters through the limiter 14 to the third adder 15, to the other input of which. The signal from the output of the functional converter 10 enters.
    The difference signal from the output of the third adder 15 is fed to the block 16 of the controller, and from the output of the block 16, the control signal is fed to the executive body.
    There is no manual correction in the device, and the limiter 14 ensures that the passing of the difference signals of only one polarity.
    Thus, strengthening the control signal and reducing it by the amount of time-delayed control signal, limiting the value of the control signal and increasing it by the measured value
    the pressure of the gas at the exit of the cochrössor allows for increased reliability of the protection of the compressor by eliminating the effects of interference that occur
    when adjusting the control signal with regard to the speed of its ejection, for example, using a differentiating chain.
    权利要求:
    Claims (3)
    [1]
    1. METHOD OF PROTECTING THE PUMP COMPRESSOR A FROM HURDRESS equipped with a regulator for positioning the gas bypass valve 'by supplying a control signal proportional to the difference between the measured values of gas flow and pressure at the compressor outlet, characterized in that, in order to increase reliability, the control signal is pre-amplified and reduced by the value of the time-delayed control signal. '
    [2]
    2. The method according to π. 1, with the fact that they limit the magnitude of the control signal at the input of the controller.
    [3]
    3. The method according to paragraphs. The first one is that the control signal is increased by the measured value of the gas pressure at the compressor outlet.
    I
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    同族专利:
    公开号 | 公开日
    BR7904099A|1980-03-25|
    CH645436A5|1984-09-28|
    IT7923923D0|1979-06-27|
    FR2429913B1|1984-01-27|
    DE2828124C2|1981-11-19|
    BE877261A|1979-10-15|
    JPS5510092A|1980-01-24|
    IT1125376B|1986-05-14|
    FR2429913A1|1980-01-25|
    NL7905016A|1980-01-02|
    NL183048B|1988-02-01|
    GB2064164A|1981-06-10|
    NL183048C|1988-07-01|
    DE2828124A1|1980-01-10|
    GB2064164B|1982-10-06|
    US4298310A|1981-11-03|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2519009C2|2009-04-06|2014-06-10|Турбомека|Air bleeder with inertial filter in compressor tandem rotor|CH482242A|1968-09-30|1969-11-30|Landis & Gyr Ag|PID controller|
    US3737252A|1971-02-23|1973-06-05|Carrier Corp|Method of and apparatus for controlling the operation of gas compression apparatus|
    US3809490A|1973-05-02|1974-05-07|United Aircraft Corp|Compressor surge sensor|
    DE2623899C3|1976-05-28|1989-06-08|Siemens Ag, 1000 Berlin Und 8000 Muenchen, De|
    US4139328A|1977-05-25|1979-02-13|Gutehoffnungshitte Sterkrade Ag|Method of operating large turbo compressors|
    US4164035A|1977-09-14|1979-08-07|Sundstrand Corporation|Surge control for variable speed-variable geometry compressors|DE3105376C2|1981-02-14|1984-08-23|M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 4200 Oberhausen|Procedure for operating turbo compressors|
    US4380893A|1981-02-19|1983-04-26|The Garrett Corporation|Compressor bleed air control apparatus and method|
    JPS605647B2|1981-09-21|1985-02-13|Kawasaki Steel Co|
    US4493608A|1982-12-27|1985-01-15|General Electric Company|Surge control in compressor|
    US4560319A|1983-08-01|1985-12-24|MAN Maschinenfabrik Unternehmensbereich GHH Sterkrade|Method and apparatus for controlling at least two parallel-connected turbocompressors|
    DE3346633C1|1983-12-23|1984-10-25|J.M. Voith Gmbh, 7920 Heidenheim|Method for pump limit regulation of axial fans|
    CH665455A5|1984-03-23|1988-05-13|Do Politekh Inst|METHOD AND DEVICE FOR PREVENTING THE PUMPING OF TURBO COMPRESSORS.|
    US4697980A|1984-08-20|1987-10-06|The Babcock & Wilcox Company|Adaptive gain compressor surge control system|
    DE3540088A1|1985-11-12|1987-05-14|Gutehoffnungshuette Man|METHOD FOR DETECTING PUMPS IN TURBO COMPRESSORS|
    DE3540087A1|1985-11-12|1987-05-14|Gutehoffnungshuette Man|METHOD FOR REGULATING TURBO COMPRESSORS|
    JPS62111992U|1985-12-28|1987-07-16|
    US4781524A|1987-02-12|1988-11-01|Man Gutehoffnungshuette Gmbh|Method and apparatus for detecting pressure surges in a turbo-compressor|
    DE3809881C2|1988-03-24|1990-05-10|Man Gutehoffnungshuette Ag, 4200 Oberhausen, De|
    US5083723A|1990-12-14|1992-01-28|Teledyne Industries, Inc.|Air-driven, turbine tow reel machine controlled according to towline velocity and vent door position|
    GB2273316B|1992-12-12|1996-02-28|Rolls Royce Plc|Bleed valve control|
    US5709526A|1996-01-02|1998-01-20|Woodward Governor Company|Surge recurrence prevention control system for dynamic compressors|
    DE19828368C2|1998-06-26|2001-10-18|Man Turbomasch Ag Ghh Borsig|Method and device for operating two-stage or multi-stage compressors|
    US6141951A|1998-08-18|2000-11-07|United Technologies Corporation|Control system for modulating bleed in response to engine usage|
    DE10001365A1|2000-01-14|2001-07-19|Man Turbomasch Ag Ghh Borsig|Regulating turbo compressor to prevent pumping involves using different delay time constants for increasing/decreasing difference signal for slower changes towards pump limiting line|
    DE102008058799B4|2008-11-24|2012-04-26|Siemens Aktiengesellschaft|Method for operating a multi-stage compressor|
    IT1402481B1|2010-10-27|2013-09-13|Nuovo Pignone Spa|METHOD AND DEVICE THAT PERFORM AN COMPENSATION OF THE DEAD TIME OF ANTI-PUMPING BASED ON MODEL|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE2828124A|DE2828124C2|1978-06-27|1978-06-27|Procedure to prevent pumping of turbo compressors|
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