Flushing system for secondary circuit of high-temperature gas cooled reactor
A high-temperature gas-cooled reactor and flushing system technology, applied in liquid degassing, boiler cleaning equipment, separation methods, etc., can solve the problems of not designing cold flushing and hot flushing, and design flushing standards, etc., to avoid corrosion The effect of dirt
Pending Publication Date: 2021-07-09
XIAN THERMAL POWER RES INST CO LTD
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Problems solved by technology
The thermal system of the high temperature gas-cooled reactor secondary loop is similar to a once-through furnace, and the steam parameters (14MPa, 575°C) are much higher than those of the pressurized water reactor, so the flushing water quality standard is also higher than that of the pressurized water reactor, but the design , there is no design for cold flushing and hot flushing, and there is no design-related flushing standard
Method used
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Embodiment Construction
[0020] The present invention is described in further detail below in conjunction with accompanying drawing:
[0021] refer to figure 1 and figure 2 , the high-temperature gas-cooled reactor secondary circuit flushing system of the present invention includes a condensate replenishment pump 1, a condenser 2, a condensate pump 6, a finishing device 3, a shaft seal heater 4, a finishing bypass, and No. 5 low-pressure heating No. 5, No. 4 low-pressure heater 9, No. 3 low-pressure heater 8, deaerator 7, No. 1 feed water pump 14, No. 1 high-pressure heater 15, No. 1 steam generator 16, No. 1 steam-water separator 17, 2 No. 1 feed water pump 10, No. 2 high-pressure heater 11, No. 2 steam generator 12, No. 2 steam-water separator 13 and flushing discharge pipe; the outlet of condensate replenishment pump 1 is connected with the inlet of condenser 2, and the condenser The outlet of 2 is divided into two paths after passing through the condensate pump 6, one of which is connected to t...
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The invention discloses a flushing system for a secondary circuit of a high-temperature gas cooled reactor. The flushing system comprises a condensed water make-up pump, a condenser, a condensed water pump, a fine treatment device, a shaft seal heater, a fine treatment bypass, a fifth low-pressure heater, a fourth low-pressure heater, a third low-pressure heater, a deaerator, a first water feeding pump, a first high-pressure heater, a first steam generator, a first steam-water separator, a second water feeding pump, a second high-pressure heater, a second steam generator, a second steam-water separator and a flushing discharging pipe. By means of the system, cold-state flushing and hot-state flushing can be achieved before a unit is started.
Description
technical field [0001] The invention belongs to the technical field of chemical nuclear power in power plants, and relates to a secondary circuit flushing system for a high-temperature gas-cooled reactor. Background technique [0002] Before starting the unit, the system must be flushed to purify the water quality and prevent corrosion and scaling of the thermal system. Thermal power unit flushing is divided into cold state flushing and hot state flushing. The system performs cold state flushing first, and the cold state flushing ends after the iron ions are qualified; the boiler is ignited to perform hot state flushing, and the hot state flushing is completed after the iron ions are qualified to start the unit. For pressurized water reactor nuclear power units, considering safety issues and low steam parameters, generally only cold flushing is performed, and the unit is started after the flushing is qualified. The thermal system of the high temperature gas-cooled reactor s...
Claims
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Login to View More IPC IPC(8): F22D1/50F22B37/26F22B37/52F22B37/50
CPCF22B37/26F22B37/50F22B37/52F22D1/50
Inventor 张瑞祥余俨纪园园高玉峰武方杰姚尧
Owner XIAN THERMAL POWER RES INST CO LTD