Power plant with heat reservoir
一种发电厂、存储器的技术，应用在机器/发动机、蒸汽机装置、机械设备等方向，能够解决辅助蒸汽压力低、限制保温的温度等问题，达到提高热容的效果
Inactive Publication Date: 2019-04-02
SIEMENS ENERGY GLOBAL GMBH & CO KG
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
However, the auxiliary vapor pressure is relatively low, which in turn strongly limits the temperature used for holding
[0008] Furthermore, auxiliary steam generators generally require relatively expensive natural gas or electricity to provide the required amount of energy, whereby this method has economical disadvantages
Method used
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Embodiment approach
[0055] Figure 4 An embodiment of the method according to the invention for operating the power plant described above is shown, said method comprising the following steps:
[0056] - introducing thermally treated water from the high pressure section (11) or the medium pressure section (12) to the heat store (20) for loading (first method step 101);
[0057] - Leading liquid water back to the medium pressure section (12) by means of a return line (24) (second method step 102);
[0058] - interrupting the introduction of heat-treated water when a preset pressure or a preset temperature is reached in the thermal store (third method step 103);
[0059] - Discharging the water stored in the thermal store after the interruption to the medium-pressure part ( 12 ), the low-pressure part ( 13 ) or the steam turbine ( 4 ) by means of the discharge line ( 26 ) (fourth method step 104 ).
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The invention relates to a power plant (1) having a steam circuit (2) which can be supplied, in the region of a heat recovery steam generator (3), with thermal energy for producing steam, the steam circuit (2) comprising, in the region of the heat recovery steam generator (3), a high pressure part (11), a medium pressure part (12) and a low pressure part (13). In addition, a heat reservoir (20) which has a phase change material (21) and which is not situated in the region of the heat recovery steam generator (3) is included, wherein, in order to supply the heat reservoir (20) with thermally processed water, a supply line (25) which leads out from the high pressure part (11) or the medium pressure part (12) is included and a discharge line (26) which leads into the medium pressure part (12), the low pressure part (13) or a steam turbine (4) is included for discharging thermally processed water from the heat reservoir (20).
Description
technical field [0001] The invention relates to a power plant having a steam circuit which can be supplied with thermal energy in the region of a waste heat steam generator to generate steam, and to a method for operating such a power plant. Background technique [0002] Today's energy market requires power plants that allow flexible operation in order to simultaneously be able to cover a large power range in addition to relatively fast switching-on and switching-off times. Especially since there are large fluctuations in the electrical energy supplied and sought in the electricity supply network, such a power plant is extremely advantageous, said power plant being able to quickly export power to the supply network or to quickly extract power from said Extract power from the supply network. Furthermore, the power plant should satisfy a high power range for use in peak load operation as well as in low part load operation. [0003] Due to the required alternating load operat...
Claims
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IPC IPC(8): F01K3/06F01K3/00F01K23/10
CPCF01K3/004F01K3/06F01K23/10F01K23/106F01K13/02F01K13/003F01K3/14
Inventor 斯特凡·贝克埃里希·施密德
Owner SIEMENS ENERGY GLOBAL GMBH & CO KG