Custom Steam Turbo Expander Generator Set Dcs Plc Control System - China

Custom Steam Turbo Expander Generator Set DCS / PLC Control System Steam differential pressure turbo-expander generator set I General In recent years, increasingly greater importance is attached to energy saving and efficiency improvement in oil refining, chemical, metallurgy, steel and other industries.

As one of the critical measures for energy saving and consumption reduction, industrial waste heat & pressure recovery has important social and economic benefit.

For the purpose of process flow depressure in the industrial systems, usually throttle valve is used, but the depressure process by throttle valve will inevitably cause such problems as energy loss, increased power consumption, cavitation damage, reduced product ratio and etc.

The steam differential pressure turbo-expander generator set developed by SMDERI is an efficient energy saving device to replace the temperature and pressure reducer in the steam network of industrial systems.

Taking advantage of the steam pressure difference, it drives the turbo-expander to realize almost isentropic depressuring process and recovers the residual pressure energy of steam to generate power to obtain substantial comprehensive benefit in energy saving and consumption reduction.

II Work principle/process All HP steam entering the volute will evenly distribute the working medium to the nozzle ring along the flow channels inside the volute.

After the nozzle, the working medium obtains acceleration and converts the pressure energy into kinetic energy and then it flows to the impeller radially.

When the impeller performs external work, the pressure energy and kinetic energy are converted into the kinetic energy of rotor to drive it to run at high speed.

With work effect produced by almost isentropic expansion process of HP steam in the turbine, the steam differential pressure turbo-expander converts the energy contained in the HP steam into mechanical energy and delivers it through the main shaft so as to fulfill the residual pressure recovery.

Fig.

1 Work process sketch IIIComponents - - - - No.

| Item | Description | 1 | Turbo-expander | Rotor (impeller, main shaft) | Nozzle | Casing | Shaft seal | Volute | 2 | Gear box | Large gear ratio type | 3 | Generator | synchronous/asynchronous generator | 4 | Lube oil system | Forced oil supply lubrication system consisting of oil station and oil piping.

The oil station is made up of oil tank, cooler, filter, separator, valves and etc.

| 5 | Measuring system | Vibration sensor Temperature sensor Pressure sensor Rotation speed sensor | 6 | Control system | DCS/PLC | - - - - Based on the inlet pressure, five models are available.

- - - - Model | Inlet pressure | Outlet pressure | Flow rate | Output | ST-HHP | 5.0~6.0 MPa | 4.0~5.0 MPa | 20 t/h | 300~500 kW | ST-HP | 3.8~4.4 MPa | 1.6~2.2MPa | 80t/h | 2500~4800kW | ST-MP | 2.0~3.4 MPa | 1.0~1.7 MPa | 50t/h | 2000~2400kW | ST-LP | 0.8~1.2 MPa | 0.4~0.6 MPa | 30 t/h | 800~1400 kW | ST-LLP | 0.4~0.6 MPa | 0.2~0.3 MPa | 20 t/h | 700~900 kW | - - - - IV Advantages 1)Customized design to adapt to the user demand; 2)Designed with turbine thermal calculation optimization method and full 3D viscous aerodynamic calculation; 3)Design optimized with computational fluid dynamics (CFD) and finite element analysis; 4)Advanced reliability analysis technology; 5)The main shaft of steam differential pressure turbine integrates with the high speed shaft of gearbox and results in compact size and better economic performance.

Company Contact:

• Posted By: Shanghai Marine Diesel Engine Research Institute

• Phone: 86-21-51151156

• Address: No. 3111, Huaning Road, Shanghai, 201108, P. R. China, Shanghai , Shanghai , China

• Email:

• Website: https://www.elevatedflaresystem.com

• Business Description: Shanghai Marine Diesel Engine Research Institute (hereafter called as SMDERI) located in Shanghai, P.
  
  R.
  
  China was founded in 1963 and under the jurisdiction of China Shipbuilding Industry Corporation and now is the sole national level research center on marine diesel engines in China.