High and low pressure supply water heater

发布时间 2019-01-08
0


技术参数 ( Technical parameters ):


NameShell sideTube side
Design pressure(MPa)1.91.7
Design temperature(℃)350/230250
Hydraulic test pressure(MPa)2.5927.6
Operating mediumSteam,waterWater
Medium charactera part of 
the first group
a part of 
the first group
Corrosion allowance(mm)11
Welded joint coefficientφ11
Number of passes12
Heat exchange area /m210210
Material of
 main pressure part
Q345R16Mn
Heat exchange 
tube  20G
Heat exchange 
tube  20G
Tube plate 16MnTube plate 16Mn



产品介绍 ( Product Presentation )

High pressure supply water heater uses discharge steam from steam turbine to heat supply water of boiler, and makes supply water to reach required temperature so as to improve thermal efficiency of power plant and to ensure output of the unit.


Low pressure supply water heater uses low pressure discharge steam from steam turbine to heat low pressure supply water of condensation pump, makes supply water reach required temperature so as toimprove thermal economic performance of power plan. Our company uses different design plansaccording to different requirements of users, selects optimal steam and water flow speeds, ensures good heat transfer and small steam resistance, and makes vibration calculation, earthquakecalculation
of base, thrust and thrust torque calculation of pipe seat. Low pressure heatexchangers designed by our company include various types such as vertical smooth U shape pipe and straight pipe. According to different needs, heat exchange pipes can use copper pipe, steel pipe and stainless steel pipe, etc. Reliable safety protective system isused, each low pressure supply water heater has water level indicator, adjustment device and warning device, discharge water level is adjusted automatically, warning is given out at high water level so as to turn off the low pressure heater. Safety valves are set on pipe side and casing side so as to prevent overpressure.


High pressure supply water heater: U tube type heat exchanger of DIU900-17/1.9-210-5/16-2I model is a part of Ⅲ category of vessel.


High and low pressure supply water heater

High and low pressure supply water heater


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