Products Details

A Power Station Globe Valve, also known as a power station globe valve, is a valve widely used in power systems to cut off or connect media. They are suitable for a variety of media, including water, steam, oil, superheated steam, etc., and play a role in thermal power plants, petrochemical industry, metallurgical industry, as well as high-temperature and high-pressure water and steam pipeline systems.

The structural features of the power station stop valve include a pressure self-tightening seal structure, which helps to improve the sealing performance. The sealing surface of the valve disc and seat is usually made of cobalt-based cemented carbide spray welding, which makes the valve wear resistance, high temperature resistance, corrosion resistance and abrasion resistance. The stem is usually a monolithic forged structure, tempered and surface nitriding treatment, with good corrosion resistance and abrasion resistance.

The implementation standard for power station shut-off valves usually follows JB/T3595, which is a design specification that also specifies the structural length, welding groove, test and inspection, and pressure-temperature reference. In terms of performance parameters, the nominal diameter of the power station stop valve usually ranges from DN15 to DN100mm, the nominal pressure from PN10 to PN32MPa, and the applicable temperature can reach 570 ° C.

There are various types of power station stop valves, which can be classified according to different sealing surface materials, valve disc structure forms, flow channel forms, etc. For example, according to the sealing surface material can be divided into soft seal and hard seal two types; According to the structure of the valve disc can be divided into balanced and non-balanced; According to the form of the runner, it can be divided into straight flow, straight through, Angle and three way, etc.

The installation and use of power station shut-off valves should take into account fluid resistance, structural length, sealing performance and ease of operation. Compared with traditional gate valves, stop valves are simpler in structure and more convenient to manufacture and maintain. However, the fluid resistance of the stop valve is large, and the force required to open and close it is also large, which may increase the difficulty of operation and energy consumption.

When selecting the power station stop valve, the user needs to determine the appropriate model and specification according to the specific engineering requirements and media characteristics to ensure that the valve can operate safely and reliably in the power station system.