SU700687A1 - Method of protecting turbocompressor against surging - Google Patents

Method of protecting turbocompressor against surging

Info

Publication number
SU700687A1
SU700687A1 SU782564768A SU2564768A SU700687A1 SU 700687 A1 SU700687 A1 SU 700687A1 SU 782564768 A SU782564768 A SU 782564768A SU 2564768 A SU2564768 A SU 2564768A SU 700687 A1 SU700687 A1 SU 700687A1
Authority
SU
USSR - Soviet Union
Prior art keywords
signal
turbocharger
surge
signs
protecting
Prior art date
Application number
SU782564768A
Other languages
Russian (ru)
Inventor
Юрий Александрович Семенов
Светлана Ивановна Федосова
Original Assignee
Предприятие П/Я А-3884
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 Предприятие П/Я А-3884 filed Critical Предприятие П/Я А-3884
Priority to SU782564768A priority Critical patent/SU700687A1/en
Application granted granted Critical
Publication of SU700687A1 publication Critical patent/SU700687A1/en

Links

Landscapes

  • Supercharger (AREA)

Claims (1)

Изобретение относитс  к области компрессоростроени  частности к способам защиты турб окомпрессороБ от помпа жа. Известен способ защиты турбокомпрес сора от помпажа путем измерени  расхода и давлени  газа в линии нагнетани , вычислени  производных по времени от измеренных величин и выработки сигнала помпажа по сигналам производных ll, Способ обладает тем недостатком, чт осуществл ет зашиту турбокомпрессора, не достигшего режима помпажа, и тем с мым снижает надежность и экономичность использовани  компрессора. Целью изобретени   вл етс  повышение надежности определени  помпажа. Цель достигаетс  тем, что дополнител но измер ют частоту вращени  вала турбокомпрессора , определ ют производную этой величины, а сигнал помпажа вырабатывают при одновременном совпадении знаков Ъсех трех производных. На чертеже представлена блок-схема устройства дл  реализации предлагаемого способа. На схеме имеютс  датчик 1 измерени  расхода и датчик 2 давлени  в линии нагнетани , датчик 3 частоты вращени  вала турбокомпрессора 4, диференпирующие блоки 5, 6 и 7, логические блоки И 8 и 9 и дроссель 10. Защита турбокомпрессора от помпажа 1о данному способу осуществл етс  еле- цующим образом. При работе турбокомпрессора 4 в устойчивой зоне в случае изменени  расхода и давлени , сигналы с выходов дифференцирующих , блоков 5 и 6 имеют различные знаки. На выходе логического блока И 9 нет сигнала, следовательно не возникает сигнала на выходе блока И 8, на который через блок 7 подаетс  сигнал датчика 3 с обратным знаком. При возникновении помпажа совпадают знаки производных сигналов от датчиков расхода , давлени  и частоты вращени  с ков 5, 6 и 7. Вследствие совпадени  Знаков входных сигналов по вл етс  выходной сигнал на выходе логического бло ка 9 и соответственно сигнал поиска на выходе логического блока 8. Таким образом дополнительное измерение частоты вращени  вала турбокомпрессора , определение производной этой величины и выработка сигнала помпажа при одновременном совпадении знаков всех трех производных, дает положитель ный эффект, заключающийс  в том, что Повышаетс  надежность обнаружени  пом п:ажа. Применение способа позволит увеличи брьк эксплуатации компрессора. 7 Формула изобретени  Способ защиты турбокомпрессора от помпажа путем измерени  расхода и давлени  газа в линии нагнетани , вычис- лени  производных по времени от измеренных величин и выработки сигнала помпажа по сигналам производных, о т л и- чающийс  тем, что, с целью повышени  надежности определени  помпа- жа, дополнительно измер ют частоту вращени  вала турбокомпрессора, отдел ют производную этой величины, а сигнал помпажа вырабатывают при одновременном совпадении знаков всех трех поизводных. Источники информации, прин тые во внимание при экспертизе 1. Патент США № 4046490, кл. 417.28, опублик. 1977.The invention relates to the field of compressor engineering, in particular, to methods for protecting the turbine from the pump. A known method of protecting a turbocharger against surge by measuring the flow rate and pressure of gas in the injection line, calculating the time derivatives of the measured values and generating a surge signal from the derivative signals II. The method has the disadvantage of protecting the turbocharger that has not reached the surge mode, and however, it reduces the reliability and economy of the compressor. The aim of the invention is to increase the reliability of the determination of surge. The goal is achieved by additionally measuring the rotational speed of the turbocharger shaft, determining the derivative of this magnitude, and generating a surge signal while simultaneously coinciding the signs of B all three derivatives. The drawing shows the block diagram of the device for implementing the proposed method. The diagram has a flow sensor 1 and a pressure sensor 2 in the discharge line, a sensor 3 for the rotational speed of the shaft of the turbocharger 4, diffusion blocks 5, 6 and 7, logic blocks AND 8 and 9 and a throttle 10. The protection of the turbocharger against surge 1 in a curious way. When the turbocharger 4 operates in a stable zone in case of changes in flow and pressure, the signals from the outputs of the differentiating units 5 and 6 have different signs. There is no signal at the output of the AND 9 logic block, therefore no signal is output at the output of the AND 8 block, to which the signal of sensor 3 with the opposite sign is supplied through block 7 When a surge occurs, the signs of the derived signals from the flow, pressure and rotational speed sensors from 5, 6 and 7 coincide. Due to the coincidence of the Signs of the input signals, the output signal of the logic block 9 and, accordingly, the search signal at the output of the logic block 8 appear. Thus, the additional measurement of the rotational speed of the turbocharger shaft, the determination of the derivative of this magnitude and the generation of a surge signal with the simultaneous coincidence of the signs of all three derivatives, gives a positive effect, consisting In that the detection reliability increases. The application of the method will allow increasing the compressor operation blk. 7 The claims of a method for protecting a turbocharger from surging by measuring the flow rate and gas pressure in the injection line, calculating the time derivatives of the measured values, and generating a surging signal from the derivative signals, in order to improve the reliability of determining surging, the rotational speed of the turbocharger shaft is measured, a derivative of this magnitude is separated, and the surge signal is generated while the signs of all three derivatives coincide. Sources of information taken into account in the examination 1. US Patent No. 4046490, cl. 417.28, pub. 1977. Всос 8амие Сигнвл н нетомиеSignature Netom
SU782564768A 1978-01-04 1978-01-04 Method of protecting turbocompressor against surging SU700687A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU782564768A SU700687A1 (en) 1978-01-04 1978-01-04 Method of protecting turbocompressor against surging

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU782564768A SU700687A1 (en) 1978-01-04 1978-01-04 Method of protecting turbocompressor against surging

Publications (1)

Publication Number Publication Date
SU700687A1 true SU700687A1 (en) 1979-11-30

Family

ID=20742346

Family Applications (1)

Application Number Title Priority Date Filing Date
SU782564768A SU700687A1 (en) 1978-01-04 1978-01-04 Method of protecting turbocompressor against surging

Country Status (1)

Country Link
SU (1) SU700687A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384818A (en) * 1978-12-06 1983-05-24 Gutehoffnungshutte Sterkrade Aktiengesellschaft Method and apparatus for limiting the end thrust of turbo compressors by means of a blowoff control
US4971516A (en) * 1988-05-04 1990-11-20 Exxon Research & Engineering Company Surge control in compressors
RU2454571C2 (en) * 2006-09-05 2012-06-27 Конокофиллипс Компани Control method of system using turbine for bringing first compressor into action

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4384818A (en) * 1978-12-06 1983-05-24 Gutehoffnungshutte Sterkrade Aktiengesellschaft Method and apparatus for limiting the end thrust of turbo compressors by means of a blowoff control
US4971516A (en) * 1988-05-04 1990-11-20 Exxon Research & Engineering Company Surge control in compressors
RU2454571C2 (en) * 2006-09-05 2012-06-27 Конокофиллипс Компани Control method of system using turbine for bringing first compressor into action

Similar Documents

Publication Publication Date Title
KR850004830A (en) Compressor Rotation Stall Detection and Alarm System
US4984456A (en) Device for detecting a mass flow of air fed into an engine cylinder
US3872292A (en) Sonic means for detecting compressor stall
SU700687A1 (en) Method of protecting turbocompressor against surging
JPS5666727A (en) Knocking detection system
RU2003134681A (en) METHOD FOR PROTECTING A COMPRESSOR IN UNSTABLE OPERATION OF A GAS TURBINE ENGINE
SU1101585A1 (en) Method of determining efficiency of pump
SU985449A1 (en) Apparatus for protecting centrifigal compressor from surging
RU2246711C1 (en) Method and device for measuring parameters of flow in compressor
SU850931A1 (en) Method of determining stable-operation reserve of natural-gas supercharger
SU1245760A1 (en) Method of protecting compressor from surging
SU918554A1 (en) Method of detecting surging of centrifugal blower
SU909327A1 (en) Method of protecting multistage turbocompressor from surging
SU503149A1 (en) Turbine-Tangential Converter
SU1203986A1 (en) The way to prevent surge compressor turbojet engine and device for its implementation
SU974190A1 (en) Internal combustion engine turbo-compressor bench testing method
JPS58148274A (en) Ignition timing measuring device
SU734743A1 (en) Device for determining reduced r.p.m. of gas-turbine rotor
SU779638A1 (en) Method of controlling compressor station of main gas pipeline
JP2003161158A (en) Overrun detecting method for variable vane turbo system
SU1425499A1 (en) Device for displaying internal combustion engine
SU1114143A1 (en) Method of diagnosis of gas-turbine engine of gas-pumping plant
SU983483A1 (en) Internal combustion engine cylinder condition evaluation method
SU1460648A1 (en) Apparatus for detecting cracks in working blades of turbomachines
JPS59206632A (en) Method and device for supplying mixture of air and fuel to internal-combustion engine