Multi-input single-output compressed air foam system based on PLC and control method

A compressed air foam, single-output technology, applied to controllers with specific characteristics, electric controllers, etc., can solve problems such as immature control methods, ineffective fire extinguishing effects, and unstable control

Active Publication Date: 2021-09-07
XIAN UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to provide a PLC-based multi-input single-output compressed air foam system, which solves the problem of immature control methods of compressed air foam devices in the prior art, unstable control, unreliable results, and insignificant fire extinguishing effects , The problem of unstable foam quality

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  • Multi-input single-output compressed air foam system based on PLC and control method
  • Multi-input single-output compressed air foam system based on PLC and control method
  • Multi-input single-output compressed air foam system based on PLC and control method

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Embodiment Construction

[0041] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] The multi-input and single-output compressed air foam system based on PLC in the present invention has a structure such as figure 1 As shown, including the water flow detection unit, the water flow detection unit is also connected to the foam circuit control algorithm unit and the air circuit control algorithm unit, and the water flow detection unit, the foam circuit control algorithm unit, and the air circuit control algorithm unit are all connected to the PLC controller , The PLC controller is also connected with the alarm.

[0043] Wherein, the specific structure of the water flow detection unit is: comprising a mixing chamber 12, one end of the water pipe 26 is connected to the water source, the other end of the water pipe 26 is connected to the mixing chamber 12, and the water pipe 26 between the water source and the mixing chamber ...

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Abstract

The invention discloses a multi-input single-output compressed air foam system based on a PLC. The system comprises a water flow detection unit connected with a foam loop control algorithm unit and an air loop control algorithm unit. The water flow detection unit, the foam loop control algorithm unit and the air loop control algorithm unit are all connected with the PLC, and the PLC is further connected with the alarm. The invention further discloses a control method of the multi-input single-output compressed air foam system based on the PLC. The problems that in the prior art, a compressed air foam device is immature in control method, unstable in control, unreliable in result, unobvious in fire extinguishing effect and unstable in foam quality are solved.

Description

technical field [0001] The invention belongs to the technical field of industrial automation fire protection, and relates to a PLC-based multi-input single-output compressed air foam system, in particular to a control method for a PLC-based multi-input single-output compressed air foam system. Background technique [0002] Compressed Air Foam System (CAFS, Compressed Air Foam System) is a new type of fire extinguishing system that has developed rapidly abroad in recent years. It has the advantages of high fire extinguishing efficiency, light weight, and less water consumption. This article introduces the principle of compressed air foam fire extinguishing And characteristics, and at the same time introduce the design requirements of the compressed air foam fire extinguishing system, according to the design requirements of the compressed air foam system, a simple overview of the system and the corresponding control ideas. Contents of the invention [0003] The purpose of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B11/42
CPCG05B11/42
Inventor 王建渊李英杰何东克谭万奇王海啸魏勤坡
Owner XIAN UNIV OF TECH
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