In the operation of high-parameter steam turbine units, the electro-hydraulic servo valve is a key control element, and its performance stability and reliability are crucial to the safe operation of the unit. The G761-3003B electro-hydraulic servo valve has been widely used in high-parameter steam turbine units with its excellent dynamic response, high reliability and anti-pollution ability. This paper will focus on analyzing the anti-interference ability of the G761-3003B electro-hydraulic servo valve in the operation of high-parameter steam turbine units.

1. Structural design and anti-interference basis

The G761-3003B electro-hydraulic servo valve adopts an advanced structural design, which lays the foundation for its excellent anti-interference ability in high-parameter steam turbine units.

Double nozzle flapper valve pilot stage: The valve uses a double nozzle flapper valve as the pilot stage. This structural design has a high dynamic response characteristic and can quickly and accurately control the movement of the valve core. The double nozzle flapper valve design can effectively reduce the impact of pollutants in the oil on the valve performance and improve the anti-pollution ability of the servo valve.

Dry torque motor: The use of dry torque motor reduces the oil pollution to electrical components and improves the reliability of the electrical part.

Mechanical feedback structure: The mechanical feedback structure can provide accurate valve core position feedback, improve the control accuracy and stability of the servo valve. This feedback mechanism improves the anti-vibration ability of the valve.

2. Analysis of anti-interference mechanism

The anti-interference ability of G761-3003B electro-hydraulic servo valve in the operation of high-parameter steam turbine units is mainly reflected in the following aspects:

Environmental adaptability:

G761-3003B electro-hydraulic servo valve can operate stably in harsh environments such as high temperature and high pressure, thanks to its excellent material selection and structural design. The environment in which high-parameter steam turbines operate is often accompanied by dust and high temperature. The G761-3003B valve body has good sealing and can adapt to harsh environments.

Anti-pollution ability:

The hydraulic system of high-parameter steam turbine units has extremely high requirements for the cleanliness of the oil. The G761-3003B electro-hydraulic servo valve has a high anti-pollution ability and can effectively reduce the impact of pollutants in the oil on the valve performance. The fine structure inside the servo valve is very sensitive to oil contamination, and the valve has very strict requirements for oil filtration.

Electrical anti-interference:

The electrical environment of high-parameter steam turbine units is complex. The G761-3003B electro-hydraulic servo valve adopts an effective electrical anti-interference design, which can effectively resist electromagnetic interference and ensure the stable transmission of control signals.

Digital control technology and protection function:

Today’s electro-hydraulic servo valves are often equipped with digital control technology, which can control the valve more accurately and has a self-diagnosis function, which can improve the reliability of the valve.

Digital control technology can timely feedback the operating status of the valve and provide protection functions. When the valve is abnormal, the valve operation is stopped in time to avoid accidents.

3. Maintenance strategy

In order to ensure the long-term stable operation of G761-3003B electro-hydraulic servo valve in high-parameter steam turbine units, effective maintenance strategies need to be adopted:

Regular maintenance:

Regularly inspect and maintain the electro-hydraulic servo valve, replace worn parts in time, and ensure the normal operation of the valve.

Strict oil filtration:

Ensure the cleanliness of the oil in the hydraulic system and filter the oil strictly in accordance with the manufacturer’s requirements.

Regular calibration:

Electro-hydraulic servo valves need regular calibration to ensure the accuracy of the valve.

G761-3003B electro-hydraulic servo valve has been widely used in high-parameter steam turbine units due to its advanced structural design and excellent anti-interference ability. By adopting a double nozzle flapper valve pilot stage, a dry torque motor and a mechanical feedback structure, the G761-3003B electro-hydraulic servo valve has high dynamic response characteristics and control accuracy. At the same time, the valve has good environmental adaptability and anti-pollution ability, and can operate stably in harsh environments. By adopting effective maintenance strategies, the long-term stable operation of the G761-3003B electro-hydraulic servo valve in high-parameter steam turbine units can be guaranteed, providing reliable guarantee for the safe and stable operation of high-parameter steam turbine units.

When looking for high-quality, reliable Servo 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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