Safety signal valve automatically discharging dust for dust remover dust hopper in severe dust accumulating state

Abstract

The invention provides a safety signal valve automatically discharging dust for a dust remover dust hopper in a severe dust accumulation state. The safety signal valve is installed on a dust discharging pipeline. The dust discharging pipeline is provided with a dust inlet pipe stretching in a hopper body and a dust discharging pipe stretching out of the hopper body. The hopper body is provided with a design bearing material level and a high-material-level warning material level, wherein the dust inlet pipe is located between the design bearing material level and the high-material-level warning material level. The safety signal valve comprises a detection opening flange fixedly arranged at a pipe opening of the dust discharging pipe, an elastic pressure applying assembly fixedly connected with the detection opening flange, and a door rod, wherein one end of the door rod is connected with a valve deck used for sealing the pipe opening, and the other end of the door rod is connected with the elastic pressure applying assembly. The safety signal valve can be matched with the dust discharging pipe to conveniently judge whether the dust remover dust hopper is in a normal state or an abnormal state; and in addition, automatic dust discharging can be conducted after the design dust storing bearing capability of the dust remover is exceeded, and meanwhile, sound-light alarming of the dust remover in the accidental dust accumulation state is achieved.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to dust removal equipment, and in particular to a safety signal valve for automatically releasing dust in a dust hopper of a dust collector under serious dust accumulation. Background technique [0002] The ash hopper of the dust collector equipped in the thermal power plant is often due to ash discharge failure, and the phenomenon of short-term dust accumulation in the ash hopper often occurs, which is a normal phenomenon. Correspondingly, within the time frame of returning to normal dust removal, there will be no harm to the dust collector. Therefore, the cases where dust accumulation in the dust hopper of the dust collector caused harm to the dust collector were all due to untimely troubleshooting, which made the dust accumulation in the dust hopper of the dust collector exceed the storage capacity allowed by the design of the dust collector. [0003] There have...

AI Technical Summary

Problems solved by technology

However, in the harsh environment in the dust hopper of the dust collector, false alarms and damage to the radio frequency admittance level switch are still unavoidable. misleading

In addition, the radio frequency admittance level gauge needs to be debugged before use. During debugging, it needs to go through two states of ash and no ash to accurately calibrate the level gauge. In this way, there are defects in the ash removal system of the dust collector, such as ash removal When the designed conveying capacity is insufficient and the airflow distribution of the dust collector is uneven, there will be great risks and hidden dangers in the operation of the ash removal system

However, for passive nuclear level gauges, there is also the possibility of failure due to failure. In addition, passive nuclear level gauges have not been tested and verified under emergency conditions, so even if passive nuclear level gauges are used instead The radio frequency admittance material level switch cannot completely avoid the serious dust accumulation hazard of the dust collector

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