Steps to disassemble the Fiat Siena generator:
(1) Loosen the generator first
(2) Align the belt, then use it. Simply remove the bolts and nuts.
A generator is:
(1) A mechanical device that converts other forms of energy into electrical energy. It is driven by a water turbine, steam turbine, diesel engine or other power source. Machines for converting water and air flows. , the energy generated by fuel combustion or nuclear fission is converted into mechanical energy and transmitted to the generator, which is then converted into electrical energy by the generator.
(2) Generators are widely used in industrial and agricultural production, national defense, science and technology and daily life. There are many forms of generators, but their operating principles are all based on the law of electromagnetic induction and the lawof the electromagnetic force.
(3) Therefore, the general principle of its construction is: using suitable magnetic and conductive materials to form magnetic circuits and circuits that conduct electromagnetic induction with each other to generate electromagnetic energy and achieve the goal of energy conversion. .
When the hydraulic turbine loses load, a vacuum appears in the suction tube, causing reverse water hammer. When the hydraulic turbine enters the water pump working state, the generated water pump lift forms a. reverse water thrust. As long as the reverse direction If the axial force is greater than the total weight of the rotating part of the unit, it will lift the rotating part of the unit to a certain height. This phenomenon is called lift. The uplift phenomenon is common in axial flow turbines with low headswater and long suction tubes.
Measures to prevent machine lifting include:
(1) Provided that the speed of the unit does not exceed the specified limit after unloading, the time closing the guide The blade may be extended appropriately or the guide vane may be The blades are closed in sections;
(2) Take measures to reduce the vacuum in the channel chamber, like filling the canal chamber with compressed air. A vacuum cut-off valve installed on the top cover is required to continue operating steadily.
(3) Install a limit device that limits the lifting height. When the unit is lifted, the limit device limits. the lifting height within the permitted range to avoid damage to the equipment.