IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0055997
(2002-01-28)
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발명자
/ 주소 |
- Konezciny, Stephan
- Suter, Franz
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출원인 / 주소 |
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대리인 / 주소 |
Burns, Doane, Swecker & Mathis, L.L.P.
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인용정보 |
피인용 횟수 :
31 인용 특허 :
2 |
초록
▼
The present invention relates to a gas-storage power plant, comprising a gas reservoir (8) in which a gas can be stored under pressure, a turbogroup (2) which has at least one turbine (3, 5), a gas-supply line (9) which leads from the gas reservoir (8) to the turbogroup (2), and a valve arrang
The present invention relates to a gas-storage power plant, comprising a gas reservoir (8) in which a gas can be stored under pressure, a turbogroup (2) which has at least one turbine (3, 5), a gas-supply line (9) which leads from the gas reservoir (8) to the turbogroup (2), and a valve arrangement (12) which is arranged in the gas-supply line (9) and throttles a storage pressure (PS) applied on the inlet side to a working pressure (PA) by closed-loop and/or open-loop control. In order to improve the reliability of the valve arrangement (12), it has at least two control valves (13, 14) arranged in series. A leading first control valve (13) throttles the storage pressure (PS) applied on the inlet side to an intermediate pressure (PZ) by closed-loop or open-loop control. A subsequent second control valve (14) throttles the pressure (PZ) applied on the inlet side to the working pressure (PA) by closed-loop control.
대표청구항
▼
1. A gas-storage power plant, having a gas reservoir in which a gas can be stored under pressure, having a turbogroup which has at least one turbine, having a gas-supply line which leads from the gas reservoir to the turbogroup, and having a valve arrangement which is arranged in the gas-suppl
1. A gas-storage power plant, having a gas reservoir in which a gas can be stored under pressure, having a turbogroup which has at least one turbine, having a gas-supply line which leads from the gas reservoir to the turbogroup, and having a valve arrangement which is arranged in the gas-supply line and throttles a storage pressure (PS) applied on the inlet side to a working pressure (PA), by closed-loop and/or open-loop control, wherein the valve arrangement has at least two control valves arranged in series, having a leading first control valve for throttling the storage pressure (PS) applied on the inlet side at the first control valve to an intermediate pressure (PZ) and a further control valve for throttling a pressure applied on the inlet side at the further control valve to the working pressure (PA). 2. The gas-storage power plant as claimed in claim 1, wherein the valve arrangement has two control valves arranged in series, and the pressure applied at the second control valve on the inlet side corresponds to the intermediate pressure (PZ) at the outlet side of the first control valve. 3. The gas-storage power plant as claimed in claim 1, wherein the valve arrangement has actuators for driving the control valves, the actuators each being connected to a control device which is interconnected in a feedback control circuit or a plurality of feedback control circuits for the purpose of feeding values of the storage pressure (PS), of the intermediate pressure (PZ) and/or of operating variables of the turbogroup to the control device. 4. The gas-storage power plant as claimed in claim 1, wherein the first control valve and/or the further control valve is designed as a relieved single-seat valve. 5. The gas-storage power plant as claimed in claim 1, wherein the first control valve and/or the further control valve is designed as a pilot-controlled valve. 6. The gas-storage power plant as claimed in claim 1, wherein the valve arrangement has a bypass valve which is connected between the outlet of the first control valve and th turbogroup. 7. A method of operating a gas-storage power plant as claimed in claim 1, wherein the first control valve is controlled in a closed-loop system for generating an essentially constant intermediate pressure (PZ). 8. The method as claimed in claim 7, wherein the first control valve is controlled in a closed-loop system as a function of a setpoint/actual-value deviation of a predetermined intermediate pressure (PZ). 9. A method of operating a gas-storage power plant as claimed in claim 1, wherein the first control valve is controlled in an open-loop system according to a predetermined valve-lift position, as a result of which a variable intermediate pressure (PZ) is generated. 10. The method as claimed in claim 8, wherein the second control valve is controlled in a closed-loop system by means of values of the output of the turbogroup and/or of the speed of the rotor of the turbogroup as command variables of a feedback control circuit, and the working pressure (PA) is set in accordance with these command variables. 11. The method as claimed in claim 10, wherein the second control valve is controlled in a closed-loop system as a function of a setpointlactual-value deviation of the currently required command variable or command variables. 12. The method as claimed in claim 7, wherein the predetermined intermediate pressure (PZ) or the intermediate pressure (PZ) which occurs is greater than or equal to the maximum working pressure (PA) which occurs.
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