Nuclear power Gate valve

Nuclear power gate valve is a valve used in various system pipelines of nuclear power plants, mainly for cutting off or connecting pipeline media, suitable for non corrosive media such as water and steam.

Application location and importance: It is widely used in the nuclear island (NI), conventional island (CI), and auxiliary facilities of nuclear power plants, as well as in the nuclear island (BOP) system of power plants. It is one of the most commonly used control devices for transporting flowing media in nuclear power plants and plays a crucial role in the safe and stable operation of nuclear power plants.

The advantages of nuclear power gate valves are reflected in safety, reliability, environmental resistance, and special function adaptation, as follows:

1. Extremely high safety and sealing

Double sealing design: usually adopts a metal hard seal+auxiliary sealing structure to ensure zero leakage under high temperature and high pressure, preventing the leakage of radioactive media.

Seismic and impact resistance: The structural design meets the seismic standards of nuclear power and can withstand extreme loads such as earthquakes and pipeline water hammer, avoiding safety accidents caused by valve failure.

2. Superb environmental resistance performance

High temperature and high pressure resistance: The valve body, gate and other components are made of special stainless steel or nickel based alloys, which can withstand high temperatures above 300 ℃ and high pressures above 15MPa for a long time.

Radiation and corrosion resistance: The material needs to undergo radiation hardening treatment to resist material embrittlement caused by long-term neutron radiation; The sealing surface is wear-resistant and corrosion-resistant, suitable for special media such as boron containing water.

3. Long lifespan and high reliability

Low wear design: The gate and valve seat adopt streamlined structure to reduce medium scouring wear; During the opening and closing process, the gate does not come into direct contact with the medium, which prolongs the service life of the sealing surface.

Long maintenance free cycle: Through precision manufacturing and strict testing, it ensures stable performance in over 100000 opening and closing cycles of nuclear power, reducing the need for shutdown maintenance.