Material level detecting device for pulverized coal bunker of power system

Abstract

The invention provides a material level detecting device for a pulverized coal bunker of a power system. The material level detecting device comprises a heavy hammer, a winding roller, a pulling rope,a dustproof sleeve sleeved on the pulling rope and a dustproof cavity, wherein the dustproof cavity is a conical cavity body, the bottom surface of the dustproof cavity body is further fixed to the top of the pulverized coal bunker; one end of the pulling rope is fixed to the winding roller, the other end is arranged inside the pulverized coal bunker through a first measuring port and a second measuring port, the heavy hammer is connected with the pulling rope, and a dustproof sleeve is further arranged at the first measuring port. The dustproof sleeve comprises a sliding sleeve and a buffercylinder arranged outside the sliding sleeve, the buffer cylinder comprises a first buffer cylinder, a spring and a second buffer cylinder, wherein both the spring and the second buffer cylinder are arranged inside the first buffer cylinder, the second buffer cylinder further comprises two semi-cylindrical buffer walls; the sliding sleeve is sleeved outside the pulling rope, and one end of the sliding sleeve is further arranged with an outer edge which is extending to the outside of the sliding sleeve. According to the material level detecting device for pulverized coal bunker of power system,the pulverized coal will not be leaked from the pulverized coal bunker during the material level measuring process, so that resource conservation and storage environmental protection are achieved.

Description

technical field [0001] The invention belongs to the field of coal used for electric power, and in particular relates to a material level detection device for a pulverized coal bunker in an electric power system. Background technique [0002] Thermal power generation is a common power generation method at present. Thermal power generation refers to a power generation method that uses combustibles, such as coal, to generate heat energy during combustion, and then converts heat energy into electrical energy through a power generation device. Thermal power generation uses Coal, which accounts for more than 50% of industrial coal, is the main way to use coal in the field of power coal. The pulverized coal in thermal power plants is usually transported, dried and upgraded to the pulverized coal bunker for backup. Usually, a material level detector is used to detect the amount of pulverized coal in the pulverized coal bunker, and the ratio is compared with the real-time demand for ...

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Problems solved by technology

The current pulverized coal bunkers mostly use conveying pipelines to transport the coal from the upper part of the pulverized coal bunker to the pulverized coal bunker, and then take out the pulverized coal bunker through the coal outlet at the bottom of the pulverized coal bunker. The existing material level gauge has Hammer detection type material level gauge, nuclear radiation type material level gauge and ultrasonic material level gauge, etc. Among them, the weight detection type material level gauge is used as a simple material level detection method to measure the material level of coal powder bins. During the detection process of the weight detection type material level gauge, since the weight in the pulverized coal bin and the winding device outside the pulverized coal bin need to be connected by a wire rope, it is necessary to open a through hole for the wire rope to pass through on the top of the pulverized coal bin. The pulverized coal has an extremely fine particle size, which is easy to float in the air. During the process of measuring the material level in the pulverized coal bin, lifting the weight can easily cause the pulverized coal to leak, causing waste of resources and environmental pollution.

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