Dredging system and dredging method during boiler coal bin shed coal

Abstract

The invention discloses a dredging system and dredging method during boiler coal bin shed coal. The dredging system comprises a vibrating motor, a high pressure gas impacting device, a coal bin dredger, a coal interruption signal sensor and a DCS (Distributed Control System) control system, wherein the vibrating motor is mounted at a coal bin feed opening; the high pressure gas impacting device is mounted at an opening at the middle lower part of a coal bin; the coal bin dredger is mounted on the inner wall of the coal bin; the coal interruption signal sensor is mounted on a boiler-front belt; the coal interruption signal sensor is connected to a signal input end of the DCS control system; and a control end of the DCS control system is connected with the vibrating motor, an electromagnetic valve of the high pressure gas impacting device and a relay of the coal bin dredger. Through the adoption of the technical scheme, the dredging operation of the boiler coal bin shed coal is automatic, boiler coal bin shed coal phenomenon is fundamentally solved, the safety of a boiler in operation is enhanced, and labor intensity of a worker is reduced.

Description

technical field [0001] The invention relates to a boiler coal bunker, in particular to a dredging method for a boiler coal bunker. Background technique [0002] With the high price of coal, many thermal power plants have to use relatively cheap low-quality coal, which can not only greatly reduce production costs, but also reduce storage space and environmental pollution. Low-quality coal is generally by-products of coal washing plants, mining slag, etc., with low calorific value and large consumption, resulting in poor heat storage capacity of the boiler; and high water content, it is easy to cause the coal bunker to not leak, and the top coal hangs in the air to form a natural arch, which is called " shed coal". When encountering coal in the coal bunker, dredging by manual hammering and throwing coals is very ineffective and takes too long, which is likely to cause a furnace accident and have a great impact on the production of the power plant. Therefore, dredging the coal...

AI Technical Summary

Problems solved by technology

When encountering coal in the coal bunker, dredging by manual hammering and throwing coals is very ineffective and takes too long, which is likely to cause a furnace accident and have a great impact on the production of the power plant. Therefore, dredging the coal in the boiler coal bunker The problem has become an important topic that must be studied and solved

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