What Is The Hammer Effect?

THE HAMMER EFFECT (OR WATER HAMMER) CAN HARM VALVES, PIPES, AND GAUGES IN ANY WATER, OIL, OR GAS APPLICATION. IT OCCURS WHEN THE LIQUID PRESSURE IS TURNED FROM AN ON POSITION TO AN OFF POSITION ABRUPTLY.

WHEN WATER OR A LIQUID IS FLOWING AT FULL CAPACITY THERE IS A NORMAL, EVEN SOUND OF THE FLOW. YOU CAN TELL WHEN WATER HAMMER OCCURS BECAUSE THERE WILL TYPICALLY BE A BIG THUMP SOUND OR A SERIES OF THUDDING NOISES.

THAT NOISE IS THE IMPACT OF THE ENTIRE TRAIN OF WATER COMING TO A QUICK HALT CREATING A SHOCK WAVE.

IN THE CASE OF PRESSURE GAUGES, THIS SHOCK CAUSES A SPIKE THAT CAN DAMAGE THE GAUGE EVEN IF THE GAUGE IS THE CORRECT PRESSURE RANGE FOR THE PARTICULAR FLOW APPLICATION.

ORDINARILY PRESSURE SYSTEMS SHOULD HAVE AIR CHAMBERS (OR CUSHIONS) INSTALLED THAT SOFTEN THE IMPACT AND PREVENT THE HAMMER EFFECT.

ESSENTIALLY, AN AIR CHAMBER IS A VERTICAL SECTION OF PIPING WITH A CAP ON THE END THAT IS ATTACHED TO THE SUPPLY LINE NEAR THE SHUTOFF VALVE. IT IS FILLED WITH AIR THAT ABSORBS THE FORCE OF THE FAST-MOVING LIQUID BY COMPRESSING WITHIN THE CHAMBER. HOWEVER, SOMETIMES THOSE CHAMBERS CAN FAIL.

TO FURTHER COMBAT THE EFFECTS OF WATER HAMMER YOU CAN UTILIZE A WATER HAMMER ARRESTER. OTHER TOOLS YOU COULD USE ARE A PULSATION DAMPENER, SURGE SUPPRESSOR, OR A PRESSURE SNUBBER.

THE IDEA OF EACH OF THESE TOOLS IS THE SAME: TO DAMPEN OR REDUCE THE EFFECT OF THE FAST-MOVING LIQUID.

ANOTHER WAY TO HELP REDUCE THE HAMMER EFFECT IN SOME SCENARIOS IS TO TURN OFF THE FLOW OF LIQUID GRADUALLY INSTEAD OF TURNING THE VALVE OR FAUCET ABRUPTLY.

MOST PRESSURE SYSTEMS WILL EVENTUALLY HAVE WATER HAMMER ISSUES. SO IT IS IMPORTANT TO PLAN AHEAD AND TAKE STEPS TO PREVENT WATER HAMMER TO PRESERVE YOUR GAUGES, VALVES, AND PIPES.

此博客中的热门博文

Bill Gates-led Fund Invests in Startup That Built a New Hydropower Turbine

https://www.boland-hydroturbine.com/ Hydropower—converting moving water into energy—is the single biggest source of clean power in the world, but relies on a 200-year-old technology that hasn't changed all that much. Natel Energy Inc., a California-based hydro power startup, has developed a new turbine that updates that technology, and now the company is raising $11 million in a funding round led by Schneider Electric Ventures and Breakthrough Energy Ventures, a fund helmed by Bill Gates. The turbine lowers the construction cost of power plants, because it requires less cement and steel. It also allows for safer passage for fish, which has become a stringent environmental regulation for these types of projects in both the U.S. and Europe. Natel Energy was started by two engineers and siblings, Gia a...

阅读全文

How we can save hydropower

marketing@boland-hydroturbine.com Hydropower is the world’s third largest source of electricity and provides around 70% of the world’s renewable energy. However, dams – the traditional way we’ve harvested energy from water – are not as sustainable as you might think, disrupting the ecosystems within and around rivers, reducing biodiversity, and messing with water quality. Now, researchers are trying to find a way to make hydropower more environmentally friendly. “It’s only recently that people have started to realize that these dams fill up with sediment, that they are structurally unsound, some of them, and that something needs to be done with them,” says Carlos Garcia de Leaniz of Swansea University in Wales. But the world needs energy, and compared to other forms of renewable energy, hydropower is both flexib...

阅读全文

Baihetan Hydropower Station set to help with China’s carbon goal

The Baihetan Hydropower Station has officially started storing water as the gate of number two diversion bottom hole closed on April 6, meaning the world's largest hydropower project under construction has taken a critical step toward the goal for the first batch of hydropower units to start generating electricity on July 1. With the closing of the gate, the reservoir water level began to rise from 655 meters, according to a statement from Sinohydro Engineering Bureau 8 Co, adding that the reservoir water level will be stored to 775 meters in mid-June to meet the conditions for the first batch of hydropower-generating units to start operation. From August to September, the reservoir water will be stored to 800 meters, and then gradually stored to the normal storage level of 825 meters in June 2022. The total storage capacity of Baihetan Reservoir will be 20.627 billion cubic meters, which accounts for 91 percent of the Jinsha River Basin. The flood control reservoir is an i...

阅读全文

Boland Hydropower

搜索此博客