In the use of the steam turbine, because of the high energy and almost no heat loss, so
If you use it to generate electricity, you can say that the output is a little bit higher, and the energy that happens is a little bit more. We should also be alert at any time to whether the steam consumption rate decreases, because the decrease of the steam consumption rate will affect the normal use of equipment:
First, factors affecting steam consumption rate
The factors affecting steam turbine consumption rate mainly consist of two parts: the power of through-flow part and the power of steam power cycle steam consumption rate. If the steam consumption rate is high in the through-flow power and steam power cycle, the heat consumption rate is low.
1. Power of the current part
The power of the through-flow part depends on its design, manufacture and installation level, and depends on the power of the high-pressure cylinder, medium-pressure cylinder and low-pressure cylinder of the turbine as well as the saving and loss of the high-pressure steam distribution organization.
2. steam power cycle steam consumption rate power
The steam consumption rate of steam power cycle depends on the cycle mode and the initial and final steam parameters.
3. Tightness of thermal system
Thermal system tightness is poor, internal and external leakage phenomenon, steam turbine heat consumption rate increases.
Two, reduce the steam consumption rate
1. Improve steam consumption rate management methods.
2. Improve the power of steam turbine through flow.
3. Improve reheat cycle power, strengthen operation adjustment, improve reheat steam temperature. Reduce the amount of water sprayed by reheater during operation as much as possible.
4. Improve the water supply heat return cycle power, strengthen equipment protection and operation adjustment, improve the high input rate and water supply temperature. Keep the surface of the heater pipe clean, the tightness of the bypass valve, keep the normal water drain level of the heater in operation, and reduce the difference of the heater end.
5. Maintain the tightness of the thermal system, establish the leakage criteria of the thermal system, and timely eliminate internal and external leakage phenomena such as drainage system and bypass system.
Therefore, to reduce steam turbine consumption rate not only requires the selection of new technology, new equipment, but also to strengthen the scientific management of unit operation, so that it can play a better effect, prolong the service time, reduce the frequency of maintenance. The equipment should also be protected and maintained regularly.
