CN205494764U - High pressure fire pump low frequency inspection device - Google Patents

Abstract

The utility model provides a high pressure fire pump low frequency inspection device, including high -voltage motor, transformer, converter, programmable controller, the touch -sensitive screen, the water pump, its characterized in that: programmable controller is connected to the touch -sensitive screen, and the converter is connected to programmable controller's analogue calculation output, and the transformer is connected to the output of converter, and the high -voltage motor is connected to the output of transformer. That the converter is given in programmable controller's output is 0~10V's frequency signal. The utility model has the advantages that utilize the low pressure converter, the transformer, programmable controller, touch -sensitive screen carry out logic control, and automatic, the high -pressure pump is patrolled and examined to manual low frequency, reaches the effect of patrolling and examining of not giving pipe network increased pressure.

Description

A kind of high-pressure service fire pump low frequency inspection device

Technical field

This utility model relates to a kind of inspection device, particularly low voltage frequency converter and patrols and examines the high-pressure service fire pump low frequency inspection device of high-pressure service fire pump through transformer boost low frequency speed governing.

Background technology

The Starting mode of high-pressure service fire pump typically all total head directly initiates, and the full voltage starting when patrolling and examining at ordinary times, owing to fire_fighting pipe network is to close, water cannot be gone out, big to fire_fighting pipe network impact, and the phenomenons such as booster easily occur, and brings loss to client.And want the outlet valve of manual control water pump to adjust mouth pressure, operate the most loaded down with trivial details, operation mistake easily occurs.The most existing high-pressure service fire pump is improved, to overcome current problem.

Summary of the invention

The purpose of this utility model is to solve the variety of problems that existing high-pressure service fire pump occurs when patrolling and examining, it is provided that one i.e. saves manpower, can protect again the normal high-pressure service fire pump low frequency inspection device used of client's fire-fighting equipment to the full extent.Because booster is not only to lose some pipelines, client can be allowed the when of serious to suspend operations for consolidation, bring heavy losses to client.A kind of high-pressure service fire pump low frequency inspection device of this utility model design, including high-voltage motor, transformator, converter, Programmable Logic Controller, touch screen, water pump, it is characterised in that: touch screen connects Programmable Logic Controller, and the simulation trial outfan of Programmable Logic Controller connects converter, the outfan connection transformer of converter, the outfan of transformator connects high-voltage motor.The output of Programmable Logic Controller is the frequency signal of 0 ~ 10V to converter.The utility model has the advantages that and utilize low voltage frequency converter, transformator, Programmable Logic Controller, touch screen implementation logic control, automatically, manual low frequency patrols and examines high-pressure pump, reaches not increase the stressed effect patrolled and examined to pipe network.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Detailed description of the invention

Fig. 1 includes high-voltage motor 1, transformator 2, converter 3, Programmable Logic Controller 4, touch screen 5, water pump 6.nullIts operation principle is exactly that touch screen gives Programmable Logic Controller digital quantity (such as 0HZ，10HZ，The frequency patrolled and examined 50HZ)，Programmable Logic Controller exports the frequency signal of corresponding 0 10V to control running frequency (0HZ correspondence 0V of converter through DA conversion (digital quantity is converted to analog quantity) after receiving digital signal,50HZ correspondence 10V,10HZ correspondence 2V)，Converter exports corresponding frequency according to the actual analog input voltage signal received and runs (0V correspondence 0HZ，10V correspondence 50HZ,2V correspondence 10HZ)，(without pressure operating during owing to patrolling and examining，So within patrol frequency is typically set in 10HZ，Numeral more than more than 10HZ cannot be set on touch screen) converter output voltage through transformer boost to motor rated voltage start motor low-speed running.To reach the purpose that not supercharging is patrolled and examined.

Claims (2)

1. a high-pressure service fire pump low frequency inspection device, including high-voltage motor, transformator, converter, Programmable Logic Controller, touch screen, water pump, it is characterised in that: touch screen connects Programmable Logic Controller, and the simulation trial outfan of Programmable Logic Controller connects converter, the outfan connection transformer of converter, the outfan of transformator connects high-voltage motor.

2. a kind of high-pressure service fire pump low frequency inspection device as described in claim 1, it is characterised in that: the output of Programmable Logic Controller is the frequency signal of 0 ~ 10V to converter.