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Central Water Supply System
Water supply system is an indispensable part of the production of an important part. Water supply equipment are basically unattended, requiring good performance control system, not only can automatically operate normally, in the event of a recoverable fault state should be timely protection and automatic recovery after the fault is removed, the system appears unrecoverable fault Should be able to alarm, and minimize downtime to ensure continuous water supply equipment.

Central Water Supply System Description:


     Water supply system is an indispensable part of the production of an important part. Traditional water supply covers an area of large area, water quality is easy to pollution, infrastructure investment and more, and the most important drawback is that the water pressure can not be constant, resulting in some equipment can not work properly. Water supply equipment is directly for the production equipment, water supply, put into operation after the perennial work, basically no maintenance period during operation, so the reliability of the high. Water supply equipment are basically unattended, requiring good performance control system, not only can automatically operate normally, in the event of a recoverable fault state should be timely protection and automatic recovery after the fault is removed, the system appears unrecoverable fault Should be able to alarm, and minimize downtime to ensure continuous water supply equipment.

Frequency control technology is a new type of mature AC motor stepless speed control technology, which with its unique and excellent control performance is widely used in the field of speed control, especially in the water supply industry. Due to the special needs of safety production and water quality, there are strict requirements on the pressure of constant pressure water supply, so the frequency control technology has been more in-depth application. Constant pressure water supply technology advanced technology, constant water pressure, easy operation, reliable operation, energy saving, high degree of automation. Equipment does not need to be equipped with full-time operators.


Frequency control technology intelligent control system core part of Siemens, Mitsubishi programmable logic controller, the preparation and design of the program software by senior professional and technical personnel fully based on the operation of the pump characteristics of many years of water supply project based on the experience carefully compiled from equipment with Intuitive interface, easy to operate and reliable, stable performance, high intelligence and many other features.


working principle:

      Constant pressure water supply equipment works according to changes in water consumption automatically adjust the number of running pumps and a pump speed, the pump outlet pressure remains constant. Constant pressure water supply equipment When the user's water consumption is less than a pump out of water, the control system based on water changes have a water pump frequency adjustment operation, when the water consumption increases when the pressure drop within the pipeline system, then the pressure sensor to detect The signal is sent to the computer control unit, through the microcomputer running judgment, sends the instruction to the frequency changer, controls the water pump electrical machinery, causes the rotational speed to accelerate in order to guarantee the system pressure constant, on the contrary when when uses the water quantity to reduce, causes the pump rotational speed to slow down, maintains the constant pressure. When the water consumption is greater than one pump out of water, the first pump to switch to power frequency operation, the second pump to start frequency conversion operation, when the water consumption is greater than two pumps, it will automatically stop the operation of one or two pumps . Throughout the operation, the constant pressure water supply equipment always maintain constant system pressure, the pump always work in the high-efficiency area, both to ensure that the user constant pressure water supply, but also save energy. The actual pressure of the pipe network is compared with the given pressure after feedback. When the pressure in the pipe network is not enough, the inverter will increase the output frequency and the speed of the pump will be increased. The water supply will increase, forcing the pipe network pressure to rise. Conversely, pump speed slows, water supply decreases, pipe network pressure drops, to maintain constant pressure water supply.


中央供水冷冻水原理图201705.jpg中央供水冷却水原理图.jpg


Features:

1, to maintain constant water pressure, constant pressure water supply technology due to the use of frequency changer to change the motor power frequency, and to adjust the pump speed to change the pump outlet pressure than by regulating the pump outlet pressure control means to reduce the pipeline resistance greatly reduce the closure loss Effectiveness. Multiple pumps automatically switch to run;

2, due to variable pump work in variable frequency conditions, at its outlet flow is less than the rated flow, pump speed reduced, reducing the bearing wear and heat, extend the pump and motor mechanical life.

3, the pump motor using soft-start mode, according to the set acceleration time to accelerate, to avoid the impact of the current when the motor starts, the voltage fluctuations caused by the grid, but also to avoid a sudden motor acceleration

Surge into pump system. Complete elimination of water hammer phenomenon;

4, Can be manually / automatically run to achieve constant pressure automatic control, do not require frequent operator operations, reducing the labor intensity of staff, saving manpower;

5, adjust PID parameters online

6, pump and line protection detection alarm, signal display;



Construction guarantee:


First, in strict accordance with IS09001 quality management system standard organization and implementation of the implementation, highlighting the construction process and process control, according to the standard construction.


Second, in strict accordance with the "duration, quality, safety," the three major controls, and through a variety of incentive policies to maximize the mobilization of staff enthusiasm and creativity. Strengthen production organization, implement network plan control, carry out tasks and responsibilities at various levels, and transmit the pressure step by step, and strive to achieve operational measures in place, direct command in place, coordination and coordination in place, services in place, interlocking construction projects, rapid Orderly and efficiently.


Third, the project vigorously adopt prefabrication, assembly of the construction level, relying on the technical difficulties to overcome, science and technology to the construction period, to the quality, efficiency, to the level to ensure that projects excellence standards.




Service commitment:
All equipment sold by our factory warranty for one year, FOC repairs during the warranty period (except for improper operation). After receiving customer notice of repair, maintenance Guangdong Province, arrived at the scene within 24 hours outside the province rushed to the scene within 72 hours and resolve the problem.
In SOXI , service is a rigorous and p
ragmatic attitude, which covers smooth communication, strict quality control and perfect after-sale work.