Nuclear power valve
The valve products provided for nuclear power stations by our company include:
Hydraulic-control slow-closing butterfly check valves and electric butterfly valves at the pump outlet of circulating water system, electric butterfly valves at the contact wells, and various types of expansion joints.
All products above are designed and manufactured independently by our company, and our company owns the technical patents of these leading products, of which, the core technology and quality own leading advantages in the domestic industry.
1 Hydraulic-control slowly-closing butterfly check valves
1.1 Specifications
- Nominal diameter: DN 500-4000 mm
- Nominal pressure: PN 0.6, 1.0, 1.6, 2.5MPa
- Applicable medium: Seawater
- Installation method: Horizontal layout
- Shell test pressure: 1.5 PN
- Leak test pressure: 1.1 PN
- Opening time: 30-120 s
- Closing time: Quickly-closing time ,Adjustable in 3-30 s
Quickly-closing angle,65±10°
Slowly-closing time,Adjustable in 5-90 s
Slowly-closing angle,25±10°
1.2 Application
- It is installed at the outlet of the circulating water pump to prevent the back flow of the medium.
- It is controlled interlocking with the pump, and can be closed in two stages according to pre-adjusted procedures, which can effectively stop the pump-stopping water hammer.
1.3 Applicable working conditions
It is installed at the outlet of circulating water pump at the nuclear power station as block valve and slowly-closing check valve.
1.4 Introduction of products
It is a hydraulic-control slow-closing butterfly check valve with two-stage valve closing features independently researched and developed by our company, which can be divided into energy storage tank type and heavy punch type according to the drive source to close the valves, and the national patent has been applied for such two types of products.
1.5 Features and advantages of products
Seawater is generally adopted as the medium of circulating water system in the nuclear power station, rubber liner, heavy-duty coating and ceramic coating are generally adopted for the valve body and flow-passing surface of the butterfly plate, and anti-corrosive stainless steel is adopted for the valve shaft, fasteners and other flow-passing components. The hydraulic system is safe and reliable, and PLC system has a high automatic degree.
2 Electric butterfly valves
2.1 Specifications
- Nominal diameter: DN 500-6000 mm
- Nominal pressure: PN 0.6, 1.0, 1.6, 2.5MPa
- Applicable medium: Seawater
- Installation method: Horizontal or vertical layout
- Shell test pressure: 1.5 PN
- Leak test pressure: 1.1 PN
- Opening time: 30-240 s
- Closing time: 30-240 s
2.2 Application
It is installed in the circulating water pipe system and condenser inlet and outlet as communication or cut-off medium.
2.3 Applicable working conditions
- It is installed at the front end of hydraulic-control slowly-closing butterfly check valves of circulating water pump outlet as service valve.
- It is installed in the contact wells of circulation water pipe as a switching valve between the pipes.
- It is installed at the condenser inlet and outlet as communication and block valve of the medium.
2.4 Introduction of products
The valves are the leading products of our company. The design, manufacture and acceptance of butterfly valves comply with the relevant national standards and relevant international standards.
2.5 Features and advantages of products
Seawater is generally adopted as the medium of circulating water system in the nuclear power station, rubber liner, heavy-duty coating and ceramic coating are generally adopted for the valve body and flow-passing surface of the butterfly plate, and anti-corrosive stainless steel is adopted for the valve shaft, fasteners and other flow-passing components.