Gas Station Load Automatic Control System

Abstract

The invention relates to the technical field of automatic control, in particular to an automatic coal gas station load control system. The control system comprises a high-pressure coal gas pressure control loop, a low-pressure coal gas pressure control loop and an amplitude limiter. After a low-pressure coal gas pressure set value and actual pressure data collected by a low-pressure coal gas pressure transmitter are subjected to comparison operation through a low-pressure coal gas pressure regulator, a signal is outputted to a blower frequency converter, a blower is controlled to regulate air volume to further control pressure of a low-pressure coal gas main, meanwhile the low-pressure coal gas pressure transmitter transmits measured low-pressure coal gas pressure information to the high-pressure coal gas pressure control loop through the amplitude limiter, pressure regulation of the high-pressure coal gas pressure control loop is subjected to amplitude limitation, the two control loops restrict each other during pressure regulation, safety in the whole control process is guaranteed, potential risk that the low-pressure coal gas pressure is ultrahigh and ultralow due to frequent change of coal gas demand of users is eliminated, and stable regulation of coal gas production is realized.

Description

technical field [0001] The invention relates to the technical field of automatic control, in particular to an automatic load control system for a gas station. Background technique [0002] At present, producer gas uses air and steam as gasification agents, and is converted into gaseous fuel by gasification reaction of coal in a gasifier. Producer gas equipment has the characteristics of low investment, simple structure, easy operation, and strong adaptability to coal types. It has been widely used in iron and steel, refractory materials, ceramics, building ceramics, glass products, chemicals, machinery and other industries. [0003] Due to differences in working systems and production methods, the load of gas furnaces needs to be adjusted according to user needs to maintain a balance between production and gas consumption, avoid gas station safety accidents due to untimely operation, and stabilize the gas furnace condition , Reduce heat loss and improve energy efficiency. ...

AI Technical Summary

Problems solved by technology

However, in actual operation, the saturated air temperature cannot fully reflect the ratio of the gasification agent, especially in northern regions where the temperature difference between day and night is large. The amount of air supplied varies greatly, resulting in unstable gas furnace conditions, increasing the difficulty of gas furnace operation, and affecting gas production rate

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