Redundancy control circuit and redundancy control system

Abstract

The invention provides a redundancy control circuit and a redundancy control system and aims to solve the problems that as unstable factors in a cooling water system in the prior art cause abnormal cooling water supply, an air compressor system shuts down due to sharp raise of temperature, and the heavy losses of a production line is caused. The redundancy control circuit comprises a first branch circuit, a second branch circuit, a third branch circuit, a fourth branch circuit, a fifth branch circuit, a sixth branch circuit, a seven branch circuit and an eighth branch circuit, wherein the first branch circuit is connected with the second branch circuit in parallel, then is connected with the eighth branch circuit in series, then is connected with the third branch circuit and the fourth branch circuit in parallel, and then is connected with the normally closed contact (KH01) of a first thermal relay in series to form a first loop; the fifth branch circuit is connected with the sixth branch circuit in parallel, then is connected with the normally opened contact (KH02) of the first thermal relay in series to form a second loop; the first loop, the second loop and the seventh branch circuit are connected into a power supply main circuit in parallel. The scheme provided by invention is low in cost and safe and reliable, solves the problem that a cooling water pump and an electronic control system go wrong in the running process of an air compressor, and avoids the unplanned shutdown of production equipment.

Description

technical field [0001] The invention relates to the technical field of industrial production, in particular to a redundant control circuit and a redundant control system. Background technique [0002] In recent years, the air compressor system is an important means to improve production efficiency and realize the automation of the production process in modern industry. The stability of the air compressor system directly affects the safe production of the production line. Since the air compressor will generate a lot of heat during operation, if there are unstable factors in the cooling water system and the cooling water supply is insufficient or interrupted, it will directly cause the air compressor system to go down due to a sharp rise in temperature, which will cause major damage to the production line. loss. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a redundant control circuit and a redundant control sys...

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a redundant control circuit and a redundant control system. In order to solve the problem of insufficient or interrupted supply of cooling water caused by unstable factors in the cooling water system in the prior art, it will directly lead to failure of the air compressor system. Downtime caused by a sharp rise in temperature will cause significant losses to the production line

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