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Constant pressure water supply system adopts inverter energy saving scheme

Dec 07, 2020

Constant pressure water supply system adopts inverter energy saving scheme

Preface:


For most water supply companies, the daily operating costs of traditional water supply pumps are too high, the cost of water supply remains high, and the energy consumption per unit of water supply is too large. It is troublesome to seek the best cost performance between water supply and energy consumption. A long-term problem for enterprises. At present, the water supply pumps of various water supply plants are designed according to the most unfavorable conditions of maximum head and maximum flow. The pumps run below the design efficiency most of the time. As a result, large horse-drawn cart problems often occur between the motor and the water pump. Therefore, how to solve the imbalance between water supply and energy consumption and seek an overall solution to improve water supply efficiency is one of the focus issues of various water supply enterprises.

Using variable frequency constant pressure water supply, it has the advantages of high efficiency, energy saving, stable pressure, reliable operation, simple operation, small area, low noise, no pollution, low investment, and high efficiency.


With the increasing maturity of frequency converter technology, frequency conversion speed regulation technology has been widely used in various fields. Variable frequency speed regulation and constant pressure water supply equipment, with its advantages of energy saving, safety, and high-quality water supply, play a great role in community water supply and factory water supply control. Using variable frequency constant pressure water supply, it has the advantages of high efficiency, energy saving, stable pressure, reliable operation, simple operation, small area, low noise, no pollution, low investment, and high efficiency. Therefore, frequency converters have been widely used in constant pressure water supply control systems.

Equipment configuration instructions


The frequency conversion constant pressure water supply system is mainly composed of a frequency conversion control cabinet, a pressure sensor, and a water pump. The frequency conversion control cabinet is composed of frequency converter, PLC, transformer, fuse, circuit breaker, contactor, intermediate relay, button switch and other control systems. Among them, the frequency converter and programmable controller are the main control equipment of the frequency conversion constant pressure water supply system.

1. Introduction

SAFESAVE photovoltaic inverter SN360 is a high-performance inverter that uses direct torque control technology and combines many advanced manufacturing processes. It has a wide power range, excellent speed control and torque control characteristics, complete protection functions and flexible programming capabilities, high reliability and small size.


The photovoltaic inverter SN360 can directly control all the core variables of AC motors, and can realize precise control of motor speed and torque without speed feedback. There are many application macros of the inverter. All the corresponding parameters can be automatically set by one-key setting of the application macro during operation. The input and output terminals will also be automatically configured, which saves a lot of debugging time and reduces the probability of error.

2. Programmable Controller

As another core control component, the programmable controller is a modular small PLC system that can meet applications with medium performance requirements; the NA type CPU unit with built-in analog channels can greatly reduce its cost; this PLC has a large range The various functional modules of the can meet and adapt to the automatic control task very well, and the expansion module can be added for various expansions;


The simple and practical ladder diagram structure makes the application very flexible; when the control tasks increase, the programmable controller can be expanded freely, and the additional module can expand the programmable controller at any time, basically meeting customer needs.