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

A technology of safety signal and dust collector, which is applied in the direction of safety valve, balance valve, valve device, etc., can solve the problems of uneven air distribution of dust collector, insufficient dust removal design and conveying capacity, misleading understanding of operation management personnel, etc., and achieve reliable failure Effects of exclusion and early warning, improvement of safety and stability, and possibility of eliminating failures

Pending Publication Date: 2017-10-20
DATANG ENVIRONMENT IND GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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

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Embodiment Construction

[0042] First explain the working principle of the present invention:

[0043]The ash hopper of the dust collector has the following characteristics due to its structure and working environment: First, when the dust collector is in operation, if the ash hopper is in an empty state without ash, the inside of the ash hopper will be in a negative pressure state, which means that If the hole connecting the ash hopper to the outside atmosphere is opened, the outside air will enter the inside of the ash hopper through the hole under the action of negative pressure. Secondly, when the ash hopper of the dust collector is in the state of ash accumulation, due to the high fluidity of the ash, which has a certain fluid property, the tension of the ash makes the ash spray outward from the hole where the ash hopper is connected to the external atmosphere, and the ash above the hole The higher the ash accumulation, the greater the ash ejection power.

[0044] Utilizing the characteristics o...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K17/04
CPCF16K17/0413
Inventor 吕群王长清王力腾曲红建
Owner DATANG ENVIRONMENT IND GRP
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