As a key control unit of modern generator sets, the operating efficiency and reliability of the steam turbine EH oil system are directly related to the overall performance of the unit. As one of the core components of the EH oil system, the circulating pump inlet filter HQ25.600.2Z bears the important responsibility of ensuring the cleanliness of the oil and reducing system wear. How can it improve the overall efficiency of the EH oil system through the pre-filtration function? Let’s explore it together.

1. The core role of pre-filtration in the EH oil system

The EH oil system uses high-pressure fire-resistant oil as the working medium, and its physical and chemical stability directly affects the response speed of the actuator and the control accuracy of the valve. As the inlet filter of the circulating pump, the core function of filter HQ25.600.2Z is ​​to remove solid particles and pollutants in the EH oil, thereby improving the overall efficiency of the system. Its advantages are mainly reflected in the following aspects:

1 Improve oil cleanliness and extend equipment life

HQ25.600.2Z filter element uses high-precision filter materials, which can effectively filter particulate pollutants of 25μm and above, so that the cleanliness of EH oil reaches NAS level 7 or better, thereby reducing the wear of oil on valves, pumps, servo mechanisms and other components, and improving the service life of equipment.

2 Reduce system blockage and improve response speed

The control valve and servo valve of the EH oil system are extremely sensitive to oil contamination. The HQ25.600.2Z oil filter element can significantly reduce the accumulation of pollutants, reduce the risk of valve core jamming, and ensure the rapid response of the adjustment system.

3 Protect the circulation pump and reduce maintenance costs

As the core equipment of the EH oil system, the life and performance of the circulation pump are closely related to the cleanliness of the oil. The HQ25.600.2Z filter element effectively reduces the pollutants at the pump inlet, improves the operating efficiency of the pump, and reduces the maintenance and replacement costs caused by wear.

4 Prevent oil oxidation and extend the oil change cycle

Tiny particulate pollutants in the oil will catalyze the oxidation process of phosphate ester oil. The HQ25.600.2Z pump inlet filter element can intercept these particles, reduce oxidation deposition, and reduce the rate of acid value growth, thereby extending the service life of EH oil and reducing the frequency of oil changes.

2. Coordinated optimization path of pre-filtration and system energy efficiency

Linkage management with regeneration device

EH oil system is usually equipped with diatomaceous earth adsorption device and ion exchange resin regeneration device. Pre-filtration can reduce the clogging frequency of filter material in the regeneration device by intercepting solid impurities. It is recommended to link the pressure difference alarm threshold (usually 0.35 MPa) of HQ25.600.2Z with the start signal of the regeneration device to form a graded purification mechanism.

Improvement of oil temperature control strategy

The viscosity of the oil decreases with the increase of temperature, affecting the filtration efficiency of the filter element. A temperature sensor can be installed downstream of the filter element to adjust the power output of the oil tank electric heater or cooler in real time to stabilize the oil temperature in the optimal working range of 40±2℃. This closed-loop control keeps the filter element in a high-efficiency filtering state at all times.

3. Installation and maintenance of HQ25.600.2Z filter element

In order to ensure the best filtering effect of the HQ25.600.2Z filter element, the following points should be noted during installation and maintenance:

- Standard installation to ensure sealing

1. Before installing a new filter element, the filter housing and pipeline should be thoroughly cleaned to avoid residual contaminants.

2. Ensure that the filter element and the filter housing are well sealed to prevent bypass leakage.

3. Avoid external force extrusion or deformation of the filter element to maintain the best filtering effect.

- Regular inspection and replacement

1. Monitor the pressure difference of the EH oil system. When the inlet and outlet pressure difference reaches 0.2MPa, the filter element should be replaced in time.

2. According to the operating status of the equipment and the degree of oil contamination, it is recommended to check the filter element status every 3000-5000 hours and replace it.

3. Use a replacement filter element that meets the requirements to avoid a decrease in filtering effect due to inferior filter elements.

- Cooperate with oil testing to optimize maintenance strategies

1. Regularly conduct oil testing (such as particle size analysis and acid value determination) to determine the health status of the oil.

2. Combined with the oil test results, timely adjust the filter element replacement cycle to improve the pertinence of system maintenance.

3. Use online monitoring equipment to grasp the oil contamination situation in real time and improve maintenance efficiency.

Although the HQ25.600.2Z circulating oil filter element is an auxiliary component of the EH oil system, its pre-filtration efficiency has a leverage effect on the safe and economical operation of the unit. Through the strategy of combining structural optimization, intelligent monitoring and refined management, the technical potential of the filter element can be maximized.

When looking for high-quality, reliable steam turbine oil filters, 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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