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What is a water filled rubber dam?
In water-filled rubber dams water pressure is created in the bladder is created to the principle of communicating vessels as a water column in a regulating shaft connected with the inside of the bladder by a pipeline (inlet/outlet pipe). The height of the water column in the regulating shaft determines the internal pressure and thus the height of the inflated bladder.
How does it work?
The water bag – and thus also the bladder – are filled by one or more filling pump(s). The water is taken from the supply shaft which is generally connected with the upstream water by one or more pipes.
The bladder is inflated by feeding water into the regulating shaft.
As soon as the pressure inside the bladder exceeds the sum of external forces (bladder weight and water load), the bladder starts to prop up. The inflated bladder retains the water in the retention area.
Unique product features
The crest of water-filled rubber dams is always horizontal, even when filled only in part. Therefore the overtopping water flows very evenly across the dam.
It can measure parameters like the water level in the retention area and on the downstream side.
It can also measure the bladder height if required.
As a consequence, water-filled dams make it possible to calculate the discharge rate in a certain range. In this way the discharge rate may be accounted for in the control system as a control parameter.
What is an inflatable gate? An inflatable gate is installed in a sewage water system to allow the use of the existing sewage duct as an intermediate reservoir. They are generally designed as air filled rubber gates. Depending on the design, the complete cross section of the sewage duct can be closed. Inflatable sewer gates are installed in sewage ducts of combined sewage systems.
Inflatable gates in sewage water systems
How does it work?
In combined sewage systems, rain water and wastewater are channeled together to the water treatment plant. As the collector duct and the water treatment plant are designed for a limited capacity, part of the sewage water from heavy rains must be stored temporarily to ensure that the water treatment plant’s capacity is not exceeded.
With an inflatable gate the discharge volume can be regulated in such way that the capacity of the connected sewage treatment plants is not exceeded.
Inflatable sewer gates offer several advantages:
They can easily be installed in existing sewage water systems.
The simple design of inflatable gates requires low maintenance.
Electro-mechanical components can be installed in easily accessible operating
shafts.
Existing sewage ducts can be used as buffer reservoirs for sewage water.
Hebei Heng Yang Equipment Manufacturing Co., Ltd
