Fire-fighting inspection cabinet

Abstract

The invention discloses a fire-fighting inspection cabinet, which comprises a programmable logic controller (PLC). The PLC is connected with a touch screen through a RS232 interface and connected witha fire-fighting control center through a RS485 interface, an output terminal of the PLC is connected with a multifunctional terminal of a frequency converter, and the multifunctional terminal in thefrequency converter is arranged to have a multi-channel-speed function and be connected with a fire-fighting pump and a spray pump; the frequency converter has a manual inspection mode and a PID inspection mode; the PLC is adopted as a control core to display / input set parameters together with the touch screen, the frequency converter is adopted as a water pump driver for low-frequency inspection,and the fire-fighting pump and the spray pump are both water pumps; and the water pump flow and the water pump rotating speed are directly proportional, the water pump lift and the square of the water pump rotating speed are directly proportional, the water pump shaft power is equal to the product of the flow and the lift, thus the water pump shaft power and the cube of the water pump rotating speed are directly proportional, and that is, the water pump shaft power and the cube of the power supply frequency are directly proportional.

Description

technical field [0001] The invention belongs to the field of fire-fighting equipment and relates to a fire-fighting inspection cabinet. Background technique [0002] Fire-fighting water supply equipment is an important part of the fire-fighting system. Regardless of whether the fire-fighting linkage alarm system or other automatic fire control equipment judges the disaster situation and gives corresponding alarm information, the ultimate fundamental purpose is to start the corresponding fire control cabinet. Thereby starting the fire water pump correspondingly controlled by the control cabinet. [0003] Nowadays, there is a common problem in all kinds of fire-fighting water supply equipment: when a fire occurs in a building, a considerable number of fire-fighting water pumps cannot start the water pump after receiving the fire-fighting linkage alarm start signal, thus delaying the fire-fighting opportunity and causing damage to national property and people. The main reason ...

AI Technical Summary

Problems solved by technology

[0003] Nowadays, there is a common problem in all kinds of fire-fighting water supply equipment: when a fire occurs in a building, a considerable number of fire-fighting water pumps cannot start the water pump after receiving the fire-fighting linkage alarm start signal, thus delaying the fire-fighting opportunity and causing damage to national property and people. The main reason for the above phenomenon is that the fire pumps do not stop and start when there is no disaster or danger. Most of the fire pumps purchased by enterprises are not made of stainless steel. Over time, in the humid environment of the pump room, the pump shaft, impeller and shaft sleeve inside the fire pump will rust and die

At the same time, the fire pump management personnel were negligent in management and did not conduct periodic inspections and maintenance

[0004] In order to make up for the long-term idleness of firefighting equipment, the failure to start due to reasons such as fire pump rust has caused serious consequences to national property and people's lives.

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