Steam turbine generator
Steam turbine generator (steam turbine generator) refers to a generator driven by a steam turbine. The superheated steam generated by the boiler enters the steam turbine to expand and work, and the blades rotate to drive the generator to generate electricity. The waste steam after the work is sent back to the boiler for recycling through the condenser, circulating water pump, condensate water pump, feed water heating device, etc.
The steam turbine generator is a generator matched with the steam turbine. The speed is usually 3000 rpm (frequency 50 Hz) or 3600 rpm (frequency 60 Hz). In order to reduce the mechanical stress caused by centrifugal force and reduce wind abrasion, high-speed turbogenerators generally have smaller rotor diameters and larger lengths (ie, slender rotors). This slender rotor limits the rotor size of large high-speed turbogenerators. After the 1970s, the maximum capacity of turbo-generators reached 1.3 to 1.5 million kilowatts.
Turbine generator is a kind of synchronous generator. It is an electrical equipment that uses a steam turbine as the prime mover to drag the rotor to rotate and uses electromagnetic induction to convert mechanical energy into electrical energy. It is mainly used in thermal power plants or nuclear power plants.
There are many reasons for the design, installation and operation of turbo-generators. The failure of turbo-generators is latent, which often causes the failure rate of operating units to be high in the actual production process. The purpose of the state monitoring and fault diagnosis of the turbo-generator is to check the defects of the turbo-generator in the initial stage of the fault, and to arrange the maintenance of the unit in a planned manner to avoid the occurrence of major accidents. At the same time, extend its average trouble-free time and shorten the average repair time, reduce downtime, reduce maintenance costs, and improve the equipment utilization rate of power generation equipment
A steam turbine generator is a power generation device that uses a steam turbine as the prime mover to drag the rotor to rotate and uses the principle of electromagnetic induction to convert mechanical energy into electrical energy. After the direct current is passed into the generator rotor winding, the rotor magnetic field is established. This magnetic field is called the main magnetic field, and it rotates with the turbine generator rotor. The magnetic flux comes out of one magnetic pole of the rotor, passes through the air gap, the stator core, and the air gap, and then enters another adjacent magnetic pole of the rotor, thereby forming a main magnetic flux circuit. As the generator rotor rotates with the steam turbine, the generator magnetic pole rotates once, the magnetic field lines of the main magnetic pole are cut in sequence by the u, v, w three-phase windings (wires) installed in the stator core. According to the law of electromagnetic induction, the three-phase stator Three-phase alternating electromotive force with different phases is induced in the winding.
Assuming that the turbine generator rotor has a pair of magnetic poles (that is, an N pole and an S pole), when the turbine generator rotor and the turbine rotor rotate coaxially at high speed, such as when the turbine rotates at 3000 rpm, such a generator rotor Rotate at a constant speed of 50 cycles/second, the polarity of the magnetic pole must also change 50 times, then the induced electromotive force in the generator stator winding also changes 50 times, and three-phase alternating electromotive force with different phases is induced in the three-phase winding of the stator. That is, a three-phase alternating electromotive force with a frequency of 50 Hz. At this time, if the end of the three-phase winding of the generator stator (that is, the neutral point) is connected to ground, and the lead wire of the three-phase winding of the generator stator is connected to the electrical equipment, there will be current flowing through this process. The process of converting mechanical energy input to the turbine rotor into electrical energy.
The steam turbine designed by Dayang can be equipped with various vegetable oil extraction enterprises, or other industries.
Frequency 50-60 Hz
Suitable for boiler 1,36Mpa-8.83Mpa