Exhaust device of 330MW steam turbine generator unit
key word：Heat exchange element
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Product description
Exhaust device of 330MW steam turbine generator unit
1. Introduction
1.1. Purpose
In the thermal cycle of steam power plant, the exhaust device connects the low-pressure cylinder with the cold source air cooler, receives the exhaust steam of the steam turbine, and continuously transmits the exhaust steam to the air cooler; meanwhile, the clean condensed water from the air cooler is recycled as the boiler feed water. A drain flash tank can be set inside the exhaust device to receive the drainage and exhaust steam from all parts of the system.
1.2. Structural features
The exhaust device is generally divided into upper, middle and lower parts. The upper part is the connection neck, including the installation support of expansion joint, extraction pipe, low-pressure heater and the connecting guard plate of three-stage temperature and pressure reducer; the middle part includes return water deoxidization structure, drain flash tank, exhaust pipe connection section and main rigid structure; the lower part includes condensate tank, foundation and limit structure.
2. Product appearance (see Figure 26-1)
3. Scope of supply
3.1. Exhaust device cost
3.2. Metal expansion joint.
3.3. Drain flash tank set on exhaust device
3.4. Pressure, temperature and water level measurement interface (including balance vessel, isolation valve, etc.).
3.5. Local indicating instruments (including connecting accessories, valves, etc.).
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