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Draining and oxygen adding method for full-automatic heater

A heater, fully automatic technology, applied in the direction of chemical instruments and methods, lighting and heating equipment, heat exchange equipment, etc., can solve the problems of reported, hydrophobic and oxygenation treatment, etc.

Active Publication Date: 2013-07-31
ZHEJIANG ZHENENG TECHN RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The current oxygenation treatment is mainly aimed at the oxygenation treatment of feed water, and there is no related report on the oxygenation treatment for hydrophobicity

Method used

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  • Draining and oxygen adding method for full-automatic heater
  • Draining and oxygen adding method for full-automatic heater
  • Draining and oxygen adding method for full-automatic heater

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Experimental program
Comparison scheme
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Embodiment Construction

[0056] Taking the existing boiler water vapor circulation system as an example, the fully automatic heater hydrophobic oxygenation device and method of the present invention will be further described:

[0057] Such as figure 2 As shown, the heater of the present invention is three high-pressure heaters whose tube side is connected in series between the water outlet of the deaerator and the water inlet of the economizer; the shell sides of the three high-pressure heaters are also connected in series in sequence, respectively #1 Heaters, #2 High Pressure Heater and #3 High Pressure Heater. There are three stages of pumping at the outlet of the steam turbine to enter the shell side of #1 high-pressure heater, #2 high-pressure heater and #3 high-pressure heater to turn into hydrophobic, and the hydrophobic in the shell side of the high-pressure heater flows into the deaerator step by step, and then It enters the tube side of the high pressure heater through the deaerator. Among...

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Abstract

The invention discloses a draining and oxygen adding device for a full-automatic heater. The device comprises the following components: a PLC; a pressure detector for collecting a pressure signal in pipeline at an oxygen adding point, and transmitting the pressure signal to the PLC; a dissolved oxygen content detector for collecting a dissolved oxygen content at a detecting point and transmittingthe dissolved oxygen content signal to the PLC; an oxidation-reduction potential detector for collecting an oxidation-reduction potential at the detecting point and transmitting the oxidation-reduction potential signal to the PLC; a hydrogen conductivity detector for collecting hydrogen conductivity at the detecting point and transmitting the hydrogen conductivity signal to the PLC; and a flow controller connected with an oxygen source and for controlling oxygen addition flow according to the PLC command. The invention also discloses a draining and oxygen adding method for the automatic heater. The oxygen adding device of the invention can avoid clogging of a drainage valve on a high-pressure heater shell side pipeline, and maintain safe and economical operation of the unit at an OT working conditions.

Description

technical field [0001] The invention belongs to the technical field of electric power and power engineering control, and in particular relates to a fully automatic heater hydrophobic oxygenation device and method. Background technique [0002] The structures of the water-steam circulation system of the once-through boiler and the drainage system of the high-pressure heater of the existing super (super) critical thermal power generating unit are as follows: figure 1 and figure 2 shown. [0003] Such as figure 1 As shown, in a once-through boiler, after the feed water of the deaerator is boosted by the feed water pump, it flows sequentially through the high-pressure heater tube side, the economizer, and the water wall system to complete the heating and evaporation of the feed water, and go through three stages of superheating The heating surface such as the boiler becomes superheated steam, which is sent out of the boiler and enters the high-pressure cylinder of the steam ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/00F28F17/00F28F19/00
Inventor 刘春红施国忠谢尉扬陈统钱缪盛华王宏义
Owner ZHEJIANG ZHENENG TECHN RES INST
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