| 摘要 |
A binary power generation device is equipped with the flow path of a medium circulating through a heat exchanger, a turbine, a condenser, and a pump. A method for removing air that has intruded into the flow path of the medium includes: an air intrusion detection step of calculating, based on the pressure and temperature of a gas retaining portion communicatively connected to the flow path of the medium, a pressure threshold value obtained by adding the saturated vapor pressure of the medium and a margin value and of detecting, by comparing the pressure of a gas phase portion with the pressure threshold value, that air has intruded into the medium; a medium liquefaction step of producing a gas by pressurizing a mixed gas of the medium and air to reduce the amount of the medium in the mixed gas; and an exhaust step of exhausting the gas. |
| 主权项 |
1. A power plant comprising:
a vaporizer configured to exchange heat between a medium having a lower boiling point than water and a geothermal heat source to generate a medium gas; a turbine configured to receive a pressure of the medium gas supplied from the vaporizer to rotate; an electric generator configured to be connected to the turbine; a condenser configured to cool the medium gas discharged from the turbine, a cooling source of the condenser being the atmosphere; a circulation pump configured to supply the medium discharged from the condenser to the vaporizer; a medium flow path configured to pass through the vaporizer, the turbine, the condenser, and the circulation pump; and an air removing device configured to remove air intruding into the medium, the air removing device comprising:
a gas retaining portion provided on an outlet side of the condenser and configured to retain a gas in the medium,a pressure gauge configured to measure a pressure in the gas retaining portion,a thermometer configured to measure a temperature in the gas retaining portion,a controller configured to calculate a pressure threshold value based on a saturated vapor pressure value of the medium calculated using the temperature of the thermometer, and compare a pressure value of the pressure gauge and the pressure threshold value to determine whether or not the air has intruded into the medium, anda releaser configured to release the gas in the gas retaining portion when it is determined that the air has intruded, the releaser including
a first chamber to which the gas retained in the gas retaining portion is transferred when the controller determines that the air has intruded,a medium supplier configured to supply a liquid medium to the first chamber to compress the gas, the gas remaining in the first chamber being released after the medium is supplied, the medium supplier including
a liquid medium tank configured to store the liquid medium, anda liquid medium feed pump configured to supply the liquid medium from the liquid medium tank to an inside of the first chamber,a first valve provided in a pipe connecting the gas retaining portion and a lower portion of the first chamber,a second valve provided in a pipe connecting the liquid medium feed pump and the first chamber,a third valve provided in a pipe connecting an upper portion of the first chamber to a second chamber,a fourth valve configured to release the gas from the second chamber, anda fifth valve provided in a pipe connecting the gas retaining portion to the upper portion of the first chamber. |
