On-line detection device for corrosion protection of thermal system for hot water boiler

Abstract

The invention discloses an on-line detection device for corrosion protection of a thermal system for a hot water boiler. The upper part of the water boiler body is provided with a ventilation pipe and the end of the ventilation pipe is provided with a low-level thermal deaerator, the low-level thermal deaerator includes a tank body and an air inlet is provided on the left side of the tank body. The present invention is provided with a nitrogen conveying device at the input end of the hot water boiler, which can transport nitrogen in time when the hot water boiler is out of operation so as to evacuate the air in the hot water boiler and reduce corrosion. The upper part of the ventilation pipe is provided with a low-level thermal deaerator, the left side of the low-level thermal deaerator is provided with an air inlet, a magnetic flap water level gauge and a water seal cylinder are provided inside, and a pressure gauge and a temperature gauge are provided on the surface of the tank. , you can understand the internal situation of the tank in real time.

Description

technical field [0001] The invention relates to the technical field of online detection devices, in particular to an online detection device for corrosion protection of thermal systems used in hot water boilers. Background technique [0002] During the long-term shutdown of thermal power generation equipment, nitrogen filling protection method, dehumidification drying method or injection of ammonia-added demineralized water are usually adopted to prevent shutdown corrosion inside the thermal power system. The nitrogen filling protection method requires that the purity of nitrogen in the system reach more than 98%, and whether the nitrogen purity meets the requirements is determined by detecting the oxygen content in the system; the dehumidification drying method requires the relative humidity inside the system to be controlled in a lower range; the water injection protection method requires the internal The pH value of the protection solution reaches 10.0-10.5. All these pro...

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Problems solved by technology

[0004] The purpose of the present invention is to provide an on-line detection device for thermal system corrosion protection for hot water boilers, which solves the problem that most of the existing detection devices perform sampling detection under dynamic conditions, but cannot increase the pressure and monitor the internal medium when the filter is out of service parameters, the actual protection effect cannot be accurately regulated

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