Fire pump discharge pressure full-automatic balancing system

Abstract

The invention discloses a fire pump discharge pressure full-automatic balancing system, which comprises a CPU microprocessor, a power isolation voltage stabilizing module, a power isolation module and an operation panel, wherein the operation panel and the power isolation voltage stabilizing module are respectively connected to the CPU microprocessor; the fire pump outlet pressure full-automatic balancing system also comprises a pressure sensor connected to the CPU microprocessor through an operational amplifier, a rotational speed sensor connected to the CPU microprocessor through a photocoupling module; the power isolation module is respectively connected to the pressure sensor and the rotational speed sensor; and the CPU microprocessor is connected to an automobile ECU accelerator control port through a high-isolation photocoupling amplifier. Compared with the prior art, the fire pump outlet pressure full-automatic balancing system has the advantages of using the method for controlling the vehicle-mounted fire pump pressure through changing the rotational speed of an automobile engine to automatically balance the working pressure of the fire pump under the set pressure of a user, thereby changing a plurality of defects caused by manual pressure adjusting and mechanical pressure balancing of the vehicle-mounted fire pump. The fire pump outlet pressure full-automatic balancing system has the advantages of accurate balancing pressure numerical value, short balancing time and easy mounting.

Description

technical field [0001] The invention relates to a fire pump water outlet system for a fire truck, in particular to a fire pump water outlet pressure automatic balancing system. Background technique [0002] In recent years, the industry has paid sufficient attention to the control of the water outlet pressure of the fire pump, and how to ensure the safety of fire equipment and firefighters during the fire extinguishing operation has also attracted attention. The national standard GB7956-2008 (Trial Draft) puts forward higher requirements on how to protect the safety of firefighting equipment and firefighters. [0003] Due to the discreteness of the fire pump parameters, the complexity of the firefighting scene, and the negligence of the firefighters in the hasty operation, when the fire is being extinguished, the water pressure of the fire pump often rises suddenly, causing the fire hose to burst due to overpressure, and the backseat of the water gun The sudden increase of ...

AI Technical Summary

Problems solved by technology

The biggest disadvantage of this device: 1. Once the predetermined pressure is adjusted, the water outlet system can only work under this pressure. If you want to change to other pressure control points, you need to adjust repeatedly, and the adjusted pressure cannot be calibrated by non-professional manufacturers; 2. 1. The device is large in size, complicated in pipelines, and many accessories, which bring great inconvenience to installation and use; 3. The pressure value at the balance pressure point is not accurate, and the balance time is long (about 5-7 seconds); doesn't work

On the national III emission standard EFI engine, steel wires and springs are used to pull the accelerator pedal to change the relative position of the accelerator position sensor to change the engine speed. The method is very backward, the reliability is poor, and the installation is very cumbersome.

Images