Dynamic weighing device for coal-fired boiler

Abstract

The invention relates to a weighing device for a coal-fired boiler. The device comprises a coal bucket, a bracket and a cantilever beam, wherein the coal bucket is provided with a rotatable rocker arm; the bracket is provided with a rotary joint matched with the rocker arm; the rocker arm is connected with the cantilever beam on the top of the bracket through a lifting rope; a pulley is arranged at the rotary joint; the rocker arm is fixedly connected with the wheel axle of the pulley; a chute of the pulley is blocked inside a rotary groove of the bracket; the cantilever beam is provided witha pressure sensor which is connected with a weighing control system; the weight of coal in the coal bucket can be measured by an S type sensor on the cantilever beam in a gravity compensation way to avoid the cheating action of weighing only by the bottom when the coal bucket does not fully fall to the ground.

Description

technical field [0001] The invention relates to a discontinuous feeding coal-fired boiler, in particular to a coal hopper for discontinuous feeding coal-fired boiler with weighing function. Background technique [0002] As a commonly used steam and hot water generating device, coal-fired boilers are widely used in various industries. At present, most coal-fired boilers add coal through coal hoppers or conveyor belts. Continuously fed coal-fired boilers often add coal through conveyor belts, while non-continuously fed coal-fired boilers usually use coal hoppers to add coal. For boilers that use traditional coal scuttles to add coal, it will cost a lot to replace the existing coal scuttles, and the replaced coal scuttles can no longer be used effectively, which also increases the cost virtually. And the cheating behavior of using the load cell to weigh when the coal scuttle is not fully put down when the coal scuttle is not fully put down cannot be completely avoided by utili...

AI Technical Summary

Problems solved by technology

For boilers that use traditional coal scuttles to add coal, it will cost a lot to replace the existing coal scuttles, and the replaced coal scuttles can no longer be used effectively, which also increases the cost virtually. And the use of the existing device cannot completely avoid the cheating behavior of using the load cell to weigh when the coal scuttle is not completely put down when the coal is weighed

The weight of coal fired in a coal-fired boiler using a coal scuttle often needs to be weighed by a weighing device first, which increases the time for adding coal invisibly. There are errors and complicated operating procedures in the coal hopper

[0003] Therefore, there is an urgent need to provide a dynamic weighing coal scuttle for coal-fired boilers, which can weigh the loaded coal during the process of adding coal to the coal scuttle, and by setting sensors at its key load-bearing parts, it can effectively prevent The cheating behavior that the weighing sensor at the bottom cannot accurately weigh the coal weight when the coal scuttle is not fully lowered during the weighing process

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