Introduction to Relevant Knowledge Points for Turbine Installation

Determination of the critical speed for turbine installation: When the vibration meter is started at a speed between 3,400 and 3,900 rpm, the amplitude should not exceed 0.15 millimeters. Turbine installation vibration measurement: As the starting speed increases to 5,550 rpm, use a vibration meter to measure the amplitude—vertically, axially, and laterally—near the bearings; the amplitude should not exceed 0.03 millimeters.

Main Procedures for Turbine Installation

The main procedures for turbine installation include acceptance of the foundation and equipment, installation of the turbine unit itself, and installation of other systems (including installation of unit accessories and flushing of the oil system). The cleaning of steam pipelines and flushing of the hydraulic oil system consist of three parts.

Technical Key Points for Turbine Installation

Key technical points for the combined installation of low-pressure cylinders in steam turbine installation: The combined assembly of the low-pressure outer lower cylinder includes the following steps: First, position the rear section of the low-pressure outer lower cylinder (on the motor side) and the front section of the low-pressure outer lower cylinder (on the steam side) respectively. Then, adjust their horizontal alignment, raise their elevation, and locate their center. Once these requirements are met, separate the front and rear sections by a certain distance and thoroughly clean and inspect the vertical mating surfaces...

What is the working principle of a small steam turbine generator set?

A small steam turbine is a rotary prime mover that converts the thermal energy of steam into mechanical energy. It belongs to the machinery industry and serves as the primary power equipment in modern thermal power plants. It is also used in the metallurgical, chemical, and marine propulsion industries. The basic principle of a small steam turbine is as follows: Steam at a certain pressure and temperature enters the turbine and flows through nozzles, where it expands, gaining high rotational speed. The high-speed steam then passes over the moving blades on the turbine rotor, doing work in the process.

What is the market outlook for small steam turbines?

Small steam turbine generator sets operate by utilizing the pressure and temperature differences between the inlet and exhaust steam. After the steam has done work in the turbine, its quality changes. With the exception of a small amount of steam leakage, the flow rates of the inlet and exhaust steam are essentially equal. So, what is the market outlook for small steam turbines? Small steam turbines are primarily used in industrial applications, especially by small companies such as chemical plants, paper mills, and sugar refineries.

What is the function of a small steam turbine?

Small steam turbines are auxiliary equipment for steam turbines in thermal power plants. Simply put, a 600-MW power turbine requires a boiler weighing over 1,000 tons, and the boiler is supplied with water by two feedwater pumps. The capacity of these two feedwater pumps must exceed 12 MW. Therefore, if electric motors were chosen instead, the auxiliary power requirements of the thermal power plant would increase significantly, making it economically inefficient.