The gas turbine lubrication system is a critical component of gas turbines in the power generation and aviation industries. It ensures the smooth operation of these machines by providing lubrication, cooling, and protection against wear and tear.

Gas Turbine Lubrication System, is the heart of any gas turbine. This part functions by providing essential lubrication, cooling, and cleaning to critical components. It starts with an oil reservoir, pumps circulate oil, filters remove contaminants, and heat exchangers cool the oil. Valves and control mechanisms regulate oil flow, while monitoring systems ensure optimal operation. Regular maintenance is key to its performance and longevity.

In the realm of gas turbines, comprehending the main components of the lubrication system is pivotal. Let’s delve into these critical elements that ensure the smooth operation of these powerful machines.

1-Main Oil Pump

The main oil pump serves as the lifeblood of the system. Its primary responsibility is to circulate the primary turbine oil throughout the system, delivering vital lubrication to essential components. This continuous oil flow is crucial for minimizing friction and wear, allowing the turbine to operate efficiently and reliably.

2-Auxiliary Oil Pump

Auxiliary oil pumps has an important duty in enhancing the reliability of the lubrication system. These pumps serve as backups or additional pumps to ensure continuous oil circulation. In the event of a primary pump failure, auxiliary pumps step in, preventing oil starvation and safeguarding the turbine’s health.

3-Emergency Oil Pump

Emergency oil pumps are the last line of defense in critical situations. These pumps are designed to activate under extreme and hard conditions, ensuring lubrication and cooling system, even when all else fails. Their robustness and reliability are paramount for preventing catastrophic turbine failures.

‍The lube oil pumps are divided into AC auxiliary lube oil pump, DC emergency lube oil pump, auxiliary hydraulic pump and HWY pre-starting hydraulic pump. Among them, AC auxiliary lube oil pump and DC emergency lube oil pump are single-stage, single-suction vertical centrifugal pumps. The auxiliary hydraulic pump and pre-starting hydraulic pump are vane pumps. The auxiliary hydraulic pump is installed vertically and the pre-starting hydraulic pump is installed horizontally.

The AC auxiliary lube oil pump and auxiliary hydraulic pump are equipped with AC motors, while the DC emergency lube oil pump and pre-starting hydraulic pump are equipped with DC motors. They are suitable for gas turbine models such as 6B, 6F.01, 6F.03, 9E, etc., and are used to supply lubricating oil or hydraulic control oil to the gas turbine power generation units.

Performance range: Flow rate 0.42-216 m³/h, Head 18-90 m.
Temperature range: +10℃ to +70℃

Structural features:
AC auxiliary lube oil pump and DC emergency lube oil pump are both single-stage and single-suction vertical centrifugal oil pumps..
The impeller is submerged in oil, making it easy to start.
The pump's inlet is located at the bottom of the pump and is axially suctioned. The pump's outlet is divided into upper and lower discharge ports, and can be single or multiple discharge ports.
The rotating part of the pump is supported and positioned at the top end by a rolling bearing, and is assisted by a sliding bearing at the bottom.
The pump is connected to the prime mover by means of an internal gear type elastic coupling or a diaphragm coupling.
The connection dimensions between the pump and the oil tank, the installation height, the position of the pump outlet, etc. can be determined or modified according to the customer's requirements.

The auxiliary hydraulic pump and the pre-starting hydraulic pump are both vane pumps.
The auxiliary hydraulic pump is installed vertically, while the pre-starting hydraulic pump is installed horizontally.
The inlet and outlet positions of the pump can be arranged in the same direction, or they can be set at 90 degrees or 180 degrees.