A high temperature gas-cooled reactor secondary circuit flushing system and flushing method

A high-temperature gas-cooled reactor and flushing system technology, which is applied in the field of nuclear power, can solve the problems of increasing the control difficulty and processing cost of flushing wastewater, and achieve the effects of flexible flushing control mode, reducing wastewater discharge and improving flushing effect.

Active Publication Date: 2022-07-26
HUANENG SHANDONG SHIDAOBAY NUCLEAR POWER CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal flushing of the secondary circuit of the high-temperature reactor can only be carried out after the reactor is critical, with "nuclear" flushing, which greatly increases the difficulty of controlling the flushing wastewater and the treatment cost

Method used

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  • A high temperature gas-cooled reactor secondary circuit flushing system and flushing method

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Effect test

Embodiment 1

[0046] This embodiment provides a specific implementation of the secondary circuit flushing system of the high temperature gas-cooled reactor, such as figure 1 As shown, the flushing system includes a steam turbine 1 , a condenser 2 , a condensate pump 4 , a deaerator 6 , a feed water pump 7 and a steam generator 8 . The steam turbine 1 communicates with the condenser 2, the condenser 2 communicates with the condensate pump 4 through a first pipeline 18, and the condensate pump 4 communicates with the deaerator through a second pipeline 19. 6 is communicated, the deaerator 6 is communicated with the feed water pump 7 through the pipeline, the feed water pump 7 is communicated with the steam generator 8 through the third pipeline 20, and the steam generator 8 is communicated through the fourth pipe The road 21 communicates with the steam turbine 1 . A fifth pipeline 22 is communicated between the third pipeline 20 and the condenser 2, and the fifth pipeline 22 is connected to ...

Embodiment 2

[0054] This embodiment provides a specific implementation of the flushing method, using the flushing system in Example 1, including the following steps: closing the fourth valve 13 to isolate the finishing device 5, closing the first valve 14 and the second valve 15 to isolate the Steam generator 8, close the third valve 16 to isolate the steam turbine 1, open the trap valve 17; start the condensate pump 4, so that the condensed water in the condenser 2 passes through the first pipeline 18 and the second pipeline 19 to the deaerator 6 , and then start the feed water pump 7 to return the feed water in the deaerator 6 to the condenser 2 through part of the third pipeline 20 and the fifth pipeline 22, so as to realize the cold circulation flushing of the secondary circuit water system; start the electric boiler 9, A part of the steam generated by the electric boiler 9 enters the condenser 2 through the steam trap 17, and flushes the fourth pipe in a hot state. At the same time, th...

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Abstract

The invention provides a high-temperature gas-cooled reactor secondary-circuit flushing system and flushing method, belonging to the technical field of nuclear power. The flushing system comprises: a steam turbine; a condenser; a condensate pump; a finishing device; a deaerator; Shaft seals; vacuuming devices; steam generators; strainers; valves and pipes. When the steam generator is isolated, the condensed water passes through the deaerator and then returns to the condenser through the feed water pump for secondary circuit cold-state circulating flushing. At the same time, the electric boiler is started to perform hot flushing on the steam pipeline, heating the water in the condenser, improving the flushing effect of the condensate water, and heating the feed water through the deaerator to realize the hot circulating flushing of the secondary circuit. It can be put into a finishing device to quickly improve the water quality to meet the water inlet requirements of the steam generator and reduce the entire flushing cycle of the unit.

Description

technical field [0001] The invention relates to the technical field of nuclear power, in particular to a high-temperature gas-cooled reactor secondary-circuit flushing system and flushing method. Background technique [0002] The water quality of the secondary circuit is an important control indicator of the nuclear power plant. In the initial stage of the unit start-up, the secondary circuit needs to be flushed to meet the requirements of the operating water quality. The traditional PWR secondary-circuit flushing method is to perform cold flushing first, and then heat it by the primary-circuit main pump to perform hot flushing. The high-temperature gas-cooled reactor steam generator is a direct-current coil type, which has no online sewage discharge function, and the material is different from that of the pressurized water reactor steam generator, so it has extremely high requirements on the water quality of the secondary circuit. In the initial stage of start-up, nitrogen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G21D1/02B08B9/032
CPCG21D1/02B08B9/0321B08B2209/032Y02E30/00
Inventor 洪雨佳叶林赵峰马喜强黄鹏李振宇文发龙王锐崔鹏王磊
Owner HUANENG SHANDONG SHIDAOBAY NUCLEAR POWER CO LTD
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