Hydropower Knowledge

There are many types of hydroelectric generators. Today, I will introduce the axial flow hydroelectric generators in detail. The application of axial flow turbine generators in recent years is mainly the development of high head and large size. Domestic axial-flow turbines are developing rapidly....Read more »

Progression, referring to this, you may think of the progression of obtaining professional certificates, such as CET-4 and CET-6. In the motor, the motor also has stages. The series here does not refer to the height of the motor, but to the synchronous speed of the motor. Let’s take level 4...Read more »

Hydro generator is composed of rotor, stator, frame, thrust bearing, guide bearing, cooler, brake and other main components (see Figure). The stator is mainly composed of frame, iron core, winding and other components. The stator core is made of cold-rolled silicon steel sheets, which can be made...Read more »

1、 Division of capacity and grade of hydro generator At present, there is no unified standard for the classification of capacity and speed of hydro generator in the world. According to China’s situation, its capacity and speed can be roughly divided according to the following table: Classi...Read more »

1. Before maintenance, the size of the site for the disassembled parts shall be arranged in advance, and sufficient bearing capacity shall be considered, especially the placement of rotor, upper frame and lower frame in overhaul or extended overhaul. 2. All parts placed on the terrazzo ground sha...Read more »

China current power generation forms mainly include the following. (1) Thermal power generation. A thermal power plant is a factory that uses coal, oil, and natural gas as fuels to produce electricity. Its basic production process is: fuel combustion turns the water in the boiler into steam, and ...Read more »

The U.S. Energy Information Administration (EIA) recently released a report stating that since the summer of this year, extreme dry weather has swept the United States, causing hydropower generation in many parts of the country to decline for several consecutive months. There is a shortage of ele...Read more »

1. What are the six types of correction and adjustment items in machine installation? How to understand the allowable deviation of electromechanical equipment installation? Answer: item: 1) flat, horizontal and vertical plane. 2) The roundness, center position and center degree of the cylindrical...Read more »

AC frequency is not directly related to the engine speed of hydropower station, but it is indirectly related. No matter what type of power generation equipment, it needs to transmit power to the power grid after generating power, that is, the generator needs to be connected to the grid for power ...Read more »

The counterattack turbine is a kind of hydraulic machinery that uses the pressure of the water flow to convert water energy into mechanical energy. (1) Structure. The main structural components of the counterattack turbine are the runner, the water diversion chamber, the water guiding mechanism a...Read more »

Output drop of hydro generator (1) Cause Under the condition of constant water head, when the guide vane opening has reached the no-load opening, but the turbine does not reach the rated speed, or when the guide vane opening is greater than the original at the same output, it is considered that...Read more »

1. What are the six calibration and adjustment items in the machine installation? How to understand the allowable deviation of electromechanical equipment installation? Answer: Items: 1) The plane is straight, horizontal and vertical. 2) The roundness of the cylindrical surface itself, the cent...Read more »