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.

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.

CN113889291BActive Publication Date: 2022-07-26HUANENG SHANDONG SHIDAOBAY NUCLEAR POWER CO LTD +1
4 Cites 0 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A high temperature gas-cooled reactor secondary circuit flushing system and flushing method

Examples

Experimental program
Comparison scheme
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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
26 Jul 2022
Publication
CN113889291B
IPC
G21D1/02; B08B9/032
CPC
G21D1/02; B08B9/0321; B08B2209/032; Y02E30/00
Inventors
洪雨佳; 叶林