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Supercritical steam turbine nozzle chamber

Supercritical steam turbine nozzle chamber

The supercritical nozzle chamber is a key component used in high-pressure internal cylinder steam turbines. In conventional steam turbines, the steam pressure is often limited by critical points and cannot be further increased. The introduction of the supercritical nozzle chamber breaks this limitation, allowing the steam turbine to operate at higher pressures and temperatures, improving the heat exchange efficiency.

  • Brand name :

    SANXIN
  • Net weight range(t) :

    1.6t

In a conventional steam turbine, steam is generated by a boiler, conditioned into a high-pressure cylinder, then enters the turbine vanes from a nozzle, where it is cooled and discharged. The supercritical nozzle chamber changes the design and working principle of the nozzle so that the steam undergoes a supercritical process in the nozzle.

A supercritical process is in which steam is heated by a nozzle at a pressure that exceeds the critical pressure, followed by rapid expansion, releasing energy with little to no phase change. This process allows the steam to reach high temperatures and pressures, which increases the thermal efficiency of the turbine.

The key to a supercritical nozzle chamber is to select the appropriate nozzle design and operating parameters to ensure that the steam works under supercritical conditions. Nozzle chambers need to undergo precise thermal calculations and engineering optimization to provide the right temperature and pressure conditions while maintaining fluid stability and nozzle reliability.

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