PUMPCONTROLLEDEXPANSIONSYSTEM

The system has capability of pressure balancing in high precision compared to the conventional membrane expansion vessels. Considering the thermal expansion and contraction of water due to the temperature variation, the amount of water changes in the system. The device keeps the pressure in the installment in balance with 0,1 bar precision by transmitting the water among the tank and installment.

Thanks to the measurement sensors which the device equipped with, the water level and pressure of the system is consistently kept under control. In this way, the accumulation of air caused by change in pressure and water level and the associated heating problems are prevented.

Automatic Pump Controlled Expansion system has a tank which 99% of the volume is utalizable; thus the space saving is ensured by meeting the need with an average of 65% smaller tank capacity compared to conventional type membrane expansion vessels. This ratio is even higher in plants where operating pressure is higher.

The pumps in the device are individually controlled by frequency inverters, which ensure vibration-free pressurization. Thanks to this control provided by automation, while the pumps work with a soft start-stop system, they offer long-lasting use with the adjustable co-aging technique used in other pressure balancing equipment.

While the Pump Controlled Expansion System is commissioned, the automatic filling invention provided by the automation system functions. With this feature, which hedge the pumps against overloading and shortening their life, the water in the main is transmitted directly to the installation in a controlled manner and automatic filling is possible.

The automation system enables to monitor the amount of water collected from the main with pulse-out water meter, the amount of water reduced due to evaporation and leak is measured and water is supplied from the main line to the installation. It is also capable of detecting the static level of the leakage points in the installation, shutdown the system when dangerous limits are approached, and give visual and audible warnings.

The device has a user-friendly automation system with a color & touch screen, a functional menu and an internet module. The internet module offers remote monitoring and has the capability of sending fault alarm to the defined phone and e-mail addresses. The automation system keeps track of the last 20 faults in addition to the 15-day data logs.

Since there is no membrane and pressurized nitrogen gas in the Pump Controlled Expansion System; against the risk of membrane rupture, there is no membrane replacement and annual maintenance obligation at least every three years, which is a requirement in conventional systems.

Because there is no membrane in new generation expansion system; the pressurized nitrogen gas (pressurized air) is not needed in the tank; atmospheric air pressure is sufficient. Since the expansion tank is pump controlled, the tank used in the system does not operate under pressure.