The duct of the generator. According to the query on China.com, the resistance of the 14-import guide generator can be seen at the duct of the generator, along the position of the blower outlet pipe. Resistance is a physical quantity. In physics, it represents the resistance of a conductor to current flow. The greater the resistance of a conductor, the greater the resistance of the conductor to current flow.
1. The steam turbine body
Mainly consists of the following parts:
(1) Steam distribution mechanism: including main Steam ducts, automatic main steam valves, regulating valves, etc.;
(2) Steam turbine rotor: refers to the combination of all rotating parts of the steam turbine, mainly including working blades, impellers, shafts, etc.;
(3) Steam turbine stator: refers to the stationary part of the steam turbine, including cylinders, partitions, nozzles, shaft seals and bearings, etc.
2. Regulating security oil system
Mainly includes governor, oil motor, regulating valve, oil tank, main oil pump, auxiliary oil pump and security equipment, etc. .
3. Condensation and air extraction system
The main equipment includes condenser, condensate pump, air extractor, circulating water pump and cooling water tower.
4. Regenerative heating system
The main equipment includes low-pressure heater, deaerator and high-pressure heater.
Types of steam turbines
1. According to structure
There are single-stage steam turbines and multi-stage steam turbines; single-cylinder steam turbines with each stage installed in one cylinder, and Multi-cylinder steam turbines in which each stage is installed in several cylinders; single-shaft steam turbines in which each stage is installed on one shaft; and double-shaft steam turbines in which each stage is installed on two parallel shafts.
2. According to the working principle
There are impulse turbines in which steam mainly expands in nozzles (or stator vanes) at all levels; reaction turbines in which steam expands in both stator vanes and moving vanes. Type steam turbine; and speed-stage steam turbine in which the kinetic energy of steam expanded in the nozzle is utilized on several rows of moving blades.
3. According to thermal characteristics
There are types such as condensing steam turbine, heating type, back pressure steam turbine, extraction steam turbine and saturated steam turbine. The steam discharged from the condensing steam turbine flows into the condenser. The exhaust steam pressure is lower than the atmospheric pressure, so it has good thermal performance and is the most commonly used steam turbine.
The heating steam turbine not only provides power to drive generators or other machinery, but also provides heat for production or domestic use, and has a high thermal energy utilization rate.
Back pressure steam turbine is a steam turbine whose exhaust pressure is greater than atmospheric pressure; extraction steam turbine is a steam turbine that can extract steam from the intermediate stage for heat supply; saturated steam turbine uses saturated steam as new steam. steam turbine.