As an important power equipment in modern industry, the safe operation of steam turbine is of vital importance. The overspeed protection control solenoid valve group (hereinafter referred to as the solenoid valve group) is the core component of the steam turbine overspeed protection system. It is used to quickly cut off the steam supply when the turbine speed exceeds the safe range to prevent accidents. Here we will introduce in detail the sealing reliability of the solenoid valve set 165.31.56.03.01 under high temperature and high pressure environment, and explore its design features, working principles and performance under extreme working conditions.

I. Design features of solenoid valve group

Material selection

The solenoid valve set 165.31.56.03.01 is made of high temperature and high pressure resistant materials to ensure good sealing performance under extreme working conditions. The valve body and valve cover are usually made of high-strength alloy steel, and the seals are made of special rubber or metal materials that are resistant to high temperature and corrosion, such as fluororubber or metal graphite combination seals.

Sealing structure

The sealing structure design of the solenoid valve group 165.31.56.03.01 is the key to its reliability. A multi-stage sealing design is usually adopted, including dynamic seals and static seals. Dynamic sealing mainly relies on piston rings or O-rings, while static sealing is achieved through gaskets or metal surface contact. This multi-level sealing design can effectively prevent medium leakage and maintain a stable sealing effect even in high temperature and high pressure environments.

Surface treatment

In order to improve the sealing performance, the sealing surface of the solenoid valve 165.31.56.03.01 is specially hardened to enhance the surface hardness and wear resistance. These treatment measures not only improve the durability of the sealing surface, but also reduce the possibility of wear and corrosion, thereby improving the reliability of the seal.

Working principle

The working principle of the solenoid valve group 165.31.56.03.01 is based on the interaction between electromagnetic force and mechanical force. Under normal operating conditions, the solenoid valve group is in a power-off closed state, closing the discharge channel of the overspeed protection mother pipe oil. When the turbine speed exceeds the set safety value, the control system will quickly energize and open the solenoid valve to release the overspeed protection mother pipe oil, so that the regulating steam valve is quickly closed to prevent the turbine from overspeeding.

II. Performance under high temperature and high pressure environment

The influence of temperature on sealing performance

The high temperature environment poses a severe challenge to the sealing performance of the solenoid valve group. High temperature can cause the sealing material to age, harden or even melt, thus losing its sealing ability. However, the high temperature resistant materials and sealing structure design selected by the solenoid valve group 165.31.56.03.01 enable it to maintain stable sealing performance at temperatures up to 400°C. In addition, the multi-layer sealing design and surface treatment measures further enhance its sealing reliability at high temperatures.

The influence of pressure on sealing performance

The high pressure environment will also affect the sealing performance of the solenoid valve group. High pressure can cause deformation, increased wear and even rupture of the seal. The high-strength alloy steel valve body and multiple sealing structure used in the solenoid valve group 165.31.56.03.01 can withstand pressures up to 32MPa, ensuring that good sealing effects can be maintained under high pressure environments. In addition, the reasonable design of dynamic and static seals and high-quality sealing materials further improve its sealing reliability under high pressure conditions.

Long-term reliability

During long-term operation, the sealing performance of the solenoid valve group 165.31.56.03.01 remains stable. This is because its design takes into account the wear and aging problems of long-term operation, and adopts highly wear-resistant and aging-resistant sealing materials and structural designs. At the same time, regular maintenance and inspection can also timely discover and deal with potential sealing problems, ensuring the long-term reliability of the solenoid valve group under high temperature and high pressure environments.

As an important part of the turbine overspeed protection system, the solenoid valve group 165.31.56.03.01 has demonstrated excellent sealing reliability under high temperature and high pressure environments. The high temperature and high pressure resistant materials, multi-layer sealing design and special surface treatment measures it adopts ensure stable operation under extreme working conditions.

When looking for high-quality, reliable solenoid valves, YOYIK is undoubtedly a choice worth considering. The company specializes in providing a variety of power equipment including steam turbine accessories, and has won wide acclaim for its high-quality products and services. For more information or inquiries, please contact the customer service below:

E-mail: sales@yoyik.com
Tel: +86-838-2226655
Whatsapp: +86-13618105229

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