During the start-up and shutdown process of the steam turbine, the jacking oil pump needs to provide high-pressure lubricating oil to form a stable jacking oil film, reduce bearing friction, and ensure the safe and stable operation of the unit. The jacking oil pump outlet filter DQ8302GA1H3.5C is an important part of the system, and its back pressure control directly affects the formation and stability of the jacking oil film.

Let’s explore the role of the DQ8302GA1H3.5C filter element in the jacking oil system of the steam turbine, analyze the impact of back pressure control on the formation of the jacking oil film, and propose optimization strategies to improve the reliability and operation efficiency of the system.

1. The formation principle of the jacking oil film

The formation of the jacking oil film depends on the following key factors:

Oil supply pressure: The pressure provided by the jacking oil pump must be sufficient to overcome the bearing load to form a complete oil film.

Flow distribution: Stable and uniform flow ensures the balance of oil film thickness.

Oil cleanliness: Lubricating oil with high cleanliness can reduce bearing surface wear and extend service life.

Back pressure regulation: Reasonable control of outlet back pressure affects the oil flow rate and oil film stability.

The main function of the jacking oil filter element DQ8302GA1H3.5C is to remove tiny particles and contaminants in the jacking oil, prevent impurities from entering the bearing gap, and ensure the uniformity and stability of the oil film.

2. The influence of back pressure control on the formation of jacking oil film

The back pressure regulation of the DQ8302GA1H3.5C filter element directly affects the supply characteristics of the jacking oil, which is specifically manifested as follows:

1 Appropriate back pressure helps stabilize the oil film

Properly increasing the outlet back pressure can avoid excessive oil flow rate and ensure uniform distribution of the oil film.

Maintaining a reasonable back pressure can reduce pressure fluctuations in the bearing area and improve the reliability of the jacking system.

2 Excessive back pressure may cause system overload

Excessive back pressure will increase the workload of the oil pump, which may increase the power consumption of the pump and even cause overheating or mechanical damage.

The oil supply in the bearing area may be blocked, resulting in uneven local oil film, which in turn increases friction and wear.

3 Too low back pressure may cause oil film rupture

Low back pressure will cause the oil flow rate to be too fast, the oil film thickness will decrease, and the load-bearing capacity will be reduced.

When the oil film is uneven or too thin, metal contact may occur in the bearings, increasing the risk of wear.

3. Back pressure optimization strategy

In order to ensure the best performance of the DQ8302GA1H3.5C filter element in the jacking oil system, the following optimization measures are recommended:

1 Adjust the filter element resistance to match the back pressure requirements

Select the appropriate filtration accuracy and flow rate to balance the oil film stability and system flow resistance.

Use multi-stage filtration to reduce the pressure loss of a single-stage filter element.

2 Configure an adjustable back pressure valve

Install an adjustable back pressure valve at the outlet of the jacking oil pump to adjust the system pressure in real time.

Adjust the back pressure according to the operating conditions to ensure that the system can maintain a stable oil film under different loads.

3 Monitor oil pressure and flow

Equipped with pressure and flow sensors to monitor the jacking oil supply in real time.

Combined with data analysis, optimize the back pressure control strategy and improve the system response speed.

4 Regularly replace the filter element to keep the oil clean

Based on the pollutant content monitoring data, reasonably formulate the filter element replacement cycle.

Use high-quality replacement filter elements to ensure that the oil cleanliness meets the system requirements.

DQ8302GA1H3.5C filter element plays a key role in the turbine jacking oil system, and its back pressure control directly affects the formation and stability of the jacking oil film. Appropriate back pressure can optimize the oil film thickness, improve the bearing support capacity, and reduce friction and wear, while unreasonable back pressure may cause oil film instability or system overload.

By optimizing the filter element resistance, configuring an adjustable back pressure valve, monitoring system parameters and regularly replacing the filter element, the stability of the jacking oil film can be effectively improved to ensure the safe and reliable operation of the turbine during startup and shutdown. Reasonable back pressure control can not only improve the equipment operation efficiency, but also extend the service life of bearings and oil pumps and reduce maintenance costs.

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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