GAS FLOW CONTROLLER Russian patent published in 2014 - IPC G05D7/00 G01N30/02 

Abstract RU 2509334 C1

FIELD: power engineering.

SUBSTANCE: gas flow controller is proposed for a gas chromatograph, comprising a pressure stabiliser, the inlet of which is connected to a gas manifold, a gas flow sensor, a programmer - a gas flow setter. It contains an electronic controller containing a low-frequency filter with proportionate-integral-differential (PID) law of regulation, one of inlets of which "setting action" is connected with the "control" outlet of the programmer-setter of gas flow, and the second "signal" inlet is connected with the signal outlet of the gas flow sensor, which represents a converter of mass gas flow - voltage, at the same time the flow sensor is connected by its gas outlet with the gas inlet of the analytic part of the chromatograph, and the gas inlet is connected with the gas outlet of the pressure stabiliser, which represents an electronic pressure controller "downstream" and including a pneumatic proportionate valve with electronic control, connected pneumatically between the inlet of the gas manifold and the outlet of the pressure stabiliser. The electromagnet of the drive is connected with the outlet of the comparison circuit, one of inlets of which is connected with the control outlet of the controller with the proportionate-integral-differential law of control, and the second inlet with the signal outlet of the converter pressure-voltage, connected pneumatically to the gas outlet of the pressure stabiliser.

EFFECT: increased absolute and relative accuracy to maintain gas flow and analysis accuracy in chromatographs.

4 cl, 1 dwg

Similar patents RU2509334C1

Title Year Author Number
PNEUMATIC GAS FLOW RATE CONTROLLER FOR CHROMATOGRAPH 0
  • Kolojdenko Aleksandr Leonidovich
SU705332A1
DEVICE FOR GAS CONSUMPTION REGULATOR 0
  • Ageev Aleksej Aleksandrovich
  • Dyakonov Lev Ivanovich
  • Matveev Dmitrij Dmitrievich
  • Sinchuk Boris Iosifovich
  • Sorokina Valentina Leonidovna
SU951246A1
DEVICE FOR ADJUSTING GAS FLOW RATE 0
  • Ageev Aleksej Aleksandrovich
  • Sinchuk Boris Iosifovich
  • Skitin Anatolij Borisovich
SU1118968A1
DEVICE FOR PROGRAMMING CARRIER GAS FLOWRATE 0
  • Lozinskij Georgij Yakovlevich
  • Falko Mikhail Matveevich
  • Malakhov Valerij Borisovich
SU832467A1
CHROMATOGRAPH 0
  • Ajrapetyan Aram Surenovich
SU1658083A1
METHOD OF CHROMATOGRAPHIC ANALYSIS 0
  • Lapin Vladimir Avangardovich
SU1481677A1
0
  • Amol Yurij Dmitrievich
  • Kolojdenko Aleksandr Leonidovich
  • Meshalkina Zinaida Sidorovna
  • Mikhajlenko Valerij Ivanovich
  • Shchabelskij Andrej Andreevich
SU554496A1
CHROMATOGRAPH WITH PROGRAMMED GAS CARRIER PRESSURE BY A.S. AYRAPETYAN 0
  • Ajrapetyan Aram Surenovich
SU705331A1
GAS CHROMATOGRAPH 0
  • Berezkin Viktor Grigorevich
  • Davydenkov Anatolij Konstantinovich
  • Zelikman Aleksandr Moiseevich
  • Lipavskij Vitalij Naumovich
  • Romanov Dmitrij Grigorevich
SU721748A1
0
SU446036A1

RU 2 509 334 C1

Authors

Lapin Vladimir Avangardovich

Mukhin Igor' Pavlovich

Dates

2014-03-10Published

2013-02-22Filed