Ash conveying detection system of dedusting ash hopper

Abstract

The invention provides an ash conveying detection system for a dedusting ash hopper. The ash conveying detection system comprises at least one group of upper sampling devices and at least one group of lower sampling devices positioned below the upper sampling devices, each of the upper sampling device and the lower sampling device comprises a sampling pipe, one end of each sampling pipe penetrates through the side wall of the ash bucket and is communicated with the inner cavity of the ash bucket, and the other end of each sampling pipe is connected with a pressure measuring device, a sampling valve, a purging gas source and a purging valve in parallel; a level gage is arranged outside the ash hopper; the device further comprises a blanking pipe connected with an ash falling opening of the ash hopper, a blanking valve and an ash conveying pipeline are sequentially arranged on the downstream portion of the blanking pipe, and the ash conveying pipeline is provided with an ash conveying valve. At least one group of temperature measuring devices is arranged on the pipe wall of the blanking pipe, and each group of temperature measuring devices comprises one or more temperature measuring heads; and the pressure measuring device, the sampling valve, the purging valve, the blanking valve, the ash conveying valve and the temperature measuring head are electrically connected with the control system. The device has the advantages that the blanking condition in the ash hopper can be accurately measured, and whether blanking of the blanking pipe is smooth or not is monitored.

Description

technical field [0001] The invention relates to the field of dust removal equipment, in particular to a dust removal and ash hopper ash conveying detection system. Background technique [0002] In the dust removal and ash conveying system of thermal power plants, the inner wall of the ash hopper responsible for dust collection is easy to hang material, and the specific distribution position of the material in the ash hopper cannot be determined, which makes it difficult to accurately measure the actual material level; The internal temperature is relatively high, up to 120°C or even 130°C, and the working conditions all year round are in the process of ash erosion and wear, and the level gauge installed inside the ash hopper will inevitably wear over time, resulting in functional damage; During the operation of the unit, due to the high temperature and ash in the ash hopper, the material level gauge cannot be overhauled and maintained without stopping the machine. In addition...

AI Technical Summary

Problems solved by technology

[0002] In the dust removal and ash conveying system of a thermal power plant, the inner wall of the ash hopper used for dust collection is easy to hang material, and the specific distribution position of the material in the ash hopper cannot be determined, making it difficult to accurately measure the actual material level; during work, the ash hopper The internal temperature is high, up to 120°C or even 130°C, and the perennial working conditions are in the process of ash falling and erosion, and the level gauge installed inside the ash hopper will inevitably wear and tear over time, resulting in functional damage; and During the operation of the unit, due to the high temperature and ash in the ash hopper, the material level gauge cannot be inspected and maintained without stopping the machine; in addition, the ash discharge port under the ash hopper is blocked due to the accumulation of material and hardening, resulting in poor ash discharge and cannot be carried out. Effective monitoring, under special working conditions, it may lead to accidents such as the collapse of the ash hopper or even the entire dust removal system

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