SU709914A1 - Method of automatoc control of power-generating unit feed pump effectiveness - Google Patents
Method of automatoc control of power-generating unit feed pump effectiveness Download PDFInfo
- Publication number
- SU709914A1 SU709914A1 SU782620082A SU2620082A SU709914A1 SU 709914 A1 SU709914 A1 SU 709914A1 SU 782620082 A SU782620082 A SU 782620082A SU 2620082 A SU2620082 A SU 2620082A SU 709914 A1 SU709914 A1 SU 709914A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- feed pump
- pump
- power
- automatoc
- control
- Prior art date
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- Jet Pumps And Other Pumps (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
Description
Изобретение отно:;итс к области автоматизации котельных агрегатов, а именно к способам автоматического регулировани питани котлов. Известен способ автоматического регулировани производительности питательного насоса энергетического бло ка с многопоточным парогенератором и турбиной путем измерени расхода воды и последующего изменени производительности насоса 1. Недостатком известного способа в л етс то, что при топочных возмущени х и работе впрысков на пылеугольных котлах может наблюдатьс дефицит или избыток воды по данному потоку ввиду большой инерционности в регулировании из-за мертвого хода полностью открытого регулирующего питательного клапана. Посто нные колебани расхода воды доход т до 10 от расхода воды по потоку. Это приво дит к колебани м температуры поверхности нагрева котла, что значительно сокращает срок его службы. Целью насто щего изобретени вл етс повышение качества регулировани путем снижени колебани расхода воды по потокам. . Поставленна цель достигаетс тем, что дополнительно измзр ют давление питательной воды за насосом и давление пара перед турбиной, определ ют их разность и по полученному сигналу корректируют производительность питательного насоса. На чертеже показана схема реализации данного способа регулировани производительности питательного насоса I с многопоточным парогенератором 2 и турбиной 3. Схема содержит датчики 4 расхода воды по потокам 5, подключенные через измерительный блок 6 к регул тору 7 производительности насоса 1. Регул тор 7 соединен с клапаном 8, установленным на паропроводе 9 отбора из турбины 3 на; привод насоса 1. К измерительному блоку 6 дополнительно подключены датчик 10 давлени питательной воды и датчик 11 давлени пара перед турбиной 3 . Работает схема следующим образом. Сигналы от датчиков 4, 10 и 11 поступают на измерительный блок 6 регул тора 7 производительности питательного насоса 1. Сигналы по давлению питательной воды за насосом иThe invention relates:; to the field of automation of boiler units, in particular, to methods for automatic regulation of boiler power. There is a method for automatically controlling the performance of a power unit feed pump with a multi-flow steam generator and a turbine by measuring the flow rate of water and then changing the performance of the pump 1. A disadvantage of the known method is that there may be a shortage or excess during furnace disturbances and operation of injections in pulverized coal water through this flow due to the large inertia in the regulation due to the dead stroke of the fully open control valve. Constant fluctuations in water flow income up to 10 from the flow of water downstream. This leads to fluctuations in the temperature of the heating surface of the boiler, which significantly reduces its service life. The purpose of the present invention is to improve the quality of regulation by reducing fluctuations in water flow through the streams. . This goal is achieved by additionally measuring the feedwater pressure downstream of the pump and the vapor pressure in front of the turbine, determining their difference and adjusting the performance of the feedwater pump according to the received signal. The drawing shows a diagram of the implementation of this method of controlling the performance of the feed pump I with a multithreaded steam generator 2 and turbine 3. The circuit contains sensors 4 for water flow through flows 5 connected via measuring unit 6 to controller 7 for pump performance 1. Regulator 7 is connected to valve 8 installed on the steam line 9 selection of the turbine 3 on; pump drive 1. The feed water pressure sensor 10 and the steam pressure sensor 11 in front of the turbine 3 are additionally connected to the measuring unit 6. The scheme works as follows. The signals from sensors 4, 10 and 11 are fed to the measuring unit 6 of the regulator 7 of the feed pump 1 performance. The feed pressure signals behind the pump and
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782620082A SU709914A1 (en) | 1978-05-24 | 1978-05-24 | Method of automatoc control of power-generating unit feed pump effectiveness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU782620082A SU709914A1 (en) | 1978-05-24 | 1978-05-24 | Method of automatoc control of power-generating unit feed pump effectiveness |
Publications (1)
Publication Number | Publication Date |
---|---|
SU709914A1 true SU709914A1 (en) | 1980-01-15 |
Family
ID=20766524
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU782620082A SU709914A1 (en) | 1978-05-24 | 1978-05-24 | Method of automatoc control of power-generating unit feed pump effectiveness |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU709914A1 (en) |
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1978
- 1978-05-24 SU SU782620082A patent/SU709914A1/en active
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