System and method for controlling liquid level in a vessel
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0959554
(2007-12-19)
|
등록번호 |
US7931041
(2011-04-12)
|
발명자
/ 주소 |
- Mehendale, Charudatta Subhash
- Norman, Bruce Gordon
- Karaca, Erhan
- Kumar, Rajeeva
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
8 인용 특허 :
0 |
초록
▼
A system includes sensors configured to measure vessel parameters. A signal processing unit receives sensor output signals and generates a first, second, third, fourth, and fifth filtered output signals representative of liquid level, gas flow rate, feed-liquid flow rate, vessel pressure, and vessel
A system includes sensors configured to measure vessel parameters. A signal processing unit receives sensor output signals and generates a first, second, third, fourth, and fifth filtered output signals representative of liquid level, gas flow rate, feed-liquid flow rate, vessel pressure, and vessel temperature, respectively. A flow demand control unit receives the first filtered output signal and generates an output signal representative of feed-liquid flow demand. A shaping unit receives the second, fourth, and fifth filtered output signals and generates an output signal representative of shaped gas flow rate. A liquid level control unit controls the liquid level within predetermined limits by controlling one or more components based on the output signals from the flow demand control unit, the shaping unit, and the third filtered output signal.
대표청구항
▼
The invention claimed is: 1. A method for controlling a liquid level in a vessel having a two-phase medium; the system comprising:measuring parameters related to the vessel using sensors; wherein the parameters comprise liquid level in the vessel; gas flow rate from the vessel; pressure in the vesse
The invention claimed is: 1. A method for controlling a liquid level in a vessel having a two-phase medium; the system comprising:measuring parameters related to the vessel using sensors; wherein the parameters comprise liquid level in the vessel; gas flow rate from the vessel; pressure in the vessel, temperature of the vessel; and feed-liquid flow rate into the vessel;generating a first filtered output signal representative of liquid level in the vessel, a second filtered output signal representative of gas flow rate from the vessel, a third filtered output signal representative of feed-liquid flow rate into the vessel, a fourth filtered output signal representative of pressure in the boiler drum, and a fifth filtered output signal representative of temperature of the boiler drum based on the measured parameters;generating an output signal representative of feed-liquid flow demand from the first filtered output signal;generating an output signal representative of shaped gas flow rate as a function of pressure, temperature, or combination thereof in the vessel from the second, fourth, and fifth filtered output signals; andcontrolling the liquid level in the vessel within predetermined limits by controlling one or more components coupled to the vessel based on the output signal representative of feed-liquid flow demand, the output signal representative of shaped gas flow rate, and the third filtered output signal.
이 특허를 인용한 특허 (8)
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Singh, Anurag; Di Palma, Steven, Control of machinery with calibrated performance model.
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Petzen, John, Control of steam temperature in combined cycle power plant.
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Tiwari, Awadesh Kumar; Abrol, Sidharth; Kalwit, Rasika Suresh; Pandey, Achalesh Kumar; Petzen, John Alexander; Weidner, Charles William, Controlling boiler drum level.
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Bruckner, Jan; Effert, Martin; Thomas, Frank, Method for operating a recirculating waste heat steam generator.
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Kumar, Rajeeva; Minto, Karl Dean; Mehendale, Charudatta Subhash; Karaca, Erhan, System and method for controlling liquid level in a vessel.
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Kumar, Rajeeva; Weidner, Charles William; Di Palma, Steven, System and method for drum level control.
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Nenmeni, Vijay Anand Raghavendran; Estrada, Kelvin Rafael; Chriswindarto, Wulang Edwien, System and method for drum level control in a drum of a heat recovery steam generator.
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Unnikrishnan, Sunil Puthen Veedu; Chebiyyam, Giriprasad Venkata Narasimha; Weidner, Charles William, System and method for drum level control with transient compensation.
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