Electric heating system for throttle hole of conveying pump

Abstract

The invention is applicable to a thermal insulation system and particularly relates to an electric heating system for a dry ash conveying pump. The system comprises a plurality of conveying pumps, two power source main junction boxes, sixteen electric control distribution boxes, a plurality of pore plates and a plurality of electric heating films, wherein the shapes, sizes and positions of the electric heating films correspond to those of the pore plates; the output end of each power source main junction box is connected with the input ends of eight electric control distribution box in parallel; the power source main junction box controls the disconnection and connection of each electric control distribution box and distributes a voltage for each electric control distribution box; two sides of each conveying pump are communicated with the plurality of pore plates; each pore plate is correspondingly provided with one electric heating film; each electric control distribution box is connected with the plurality of electric heating films on each conveying pump in parallel; the electric control distribution boxes convey transformed voltage to the electric heating film. By virtue of designs of the electric heating films and an automatic monitoring circuit, not only can freezing and choking phenomena of the conveying pump in an ash discharge period be solved, but also polling is clear at a glance, and the safety and reliability of ash discharge operation of the conveying pump are ensured.

Description

technical field [0001] The invention relates to a heating and heat preservation system, in particular to an electric heating system for an orifice plate of a dry ash conveying pump. Background technique [0002] Ash removal in thermal power plants has developed from the earliest hydraulic ash removal to pneumatic ash removal, from wet method to dry method. In the prior art pneumatic ash removal, in some cold regions, the air consumption of the dry ash conveying pump to convey the air source is too large, and the energy consumption is large; During the ash discharge cycle, the pump freezes and blocks due to low temperature; it causes ash leakage in valves and pipes, which seriously pollutes the environment. Contents of the invention [0003] The purpose of the present invention is to provide a delivery pump orifice heating and heat preservation system, which aims to solve the phenomenon of freezing and blockage of pipes and valves due to weather when the existing generator...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a delivery pump orifice heating and heat preservation system, which aims to solve the phenomenon of freezing and blockage of pipes and valves due to weather when the existing generator set discharges ash through the dry ash delivery pump. Poor discharge of dry ash leads to environmental pollution

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