Supporting device for coal quantity weighing of raw coal bunker of thermal power plant and weighing raw coal bunker

Abstract

The invention relates to a supporting device for coal quantity weighing of a raw coal bunker of a thermal power plant and a weighing raw coal bunker. The supporting device comprises a base, a positioning sleeve, an upper supporting seat and a weighing sensor, a sensor groove is arranged at the middle of the base, the weighing sensor is arranged in the sensor groove, and the positioning sleeve covers the base. A positioning hole is formed in the middle of the positioning sleeve, the upper supporting seat is movably inserted into the positioning hole, the bottom face of the upper supporting seat penetrates through the positioning hole to abut against the top face of the weighing sensor, and the raw coal bunker adopts the supporting device. Compared with the prior art, according to the supporting device for coal quantity weighing of the raw coal bunker of the thermal power plant and the weighing raw coal bunker, the weighing requirement of the raw coal bunker is effectively met, the structure is simple, safety and reliability are achieved, installation is convenient, the weighing requirement of the raw coal bunker can be met, the requirements of firm fixation and safe operation of the raw coal bunker can be guaranteed, and meanwhile the function that the weighing sensor is convenient to overhaul and replace is achieved.

Description

technical field [0001] The invention relates to the field of weighing raw coal bunkers, in particular to a supporting device for weighing raw coal bunkers in thermal power plants and a weighing raw coal bunker. Background technique [0002] The raw coal bunker is a coal storage device set up in thermal power generation enterprises to ensure the stability of coal for power generation. It specializes in storing primary crushed coal (particle size ≤ 30mm), and the coal output from the raw coal bunker enters the pulverizing equipment through a coal feeder. In the system, coal finally meets the requirements of combustion power generation, so the raw coal bunker is an essential equipment in the coal thermal power generation system. [0003] The measurement of the amount of coal stored in the raw coal bunker mainly indirectly determines the quality of the coal in the bunker by measuring the accumulation height of coal in the raw coal bunker, so as to control the coal delivered to t...

AI Technical Summary

Problems solved by technology

For this reason, even if the newly built raw coal bunker with weighing function is mainly installed with a hinged fulcrum on one side, the other side is directly supported on the load cell. In this method, the weight of one side is measured indirectly. Feedback the weight of coal in the entire raw coal bunker. Due to the uneven distribution of coal accumulation in the bunker, the measurement accuracy is low, and it is difficult to meet the needs of accurate measurement in actual production. In addition, for some raw coal bunkers with multiple support points, such as raw coal There are 8 support points in the bunker, and it is difficult to arrange the position of the hinged fulcrum concentrically, so it is not suitable for the method of hinged fulcrum. It is difficult to arrange the load cell in the fixed structure of this type of coal bunker.

Unless the supporting structure of the raw coal bunker and the supporting base of the civil engineering are greatly modified, the installation requirements of the sensor can be met, which obviously will greatly increase the cost of investment.

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