Centrifugal Pump How Does It Work
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Date: 2023-11-17
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Comments and reviews: 22
Heat
The vanes accelerate the water in a circle, but the water molecules are not tethered to the rotating axis like the vanes are, the force imparted from the vane is thereforce only normal to the vane (plus a tiny amount of friction toward the center, so water's own inertia will keep it going mostly normal to the face of the vane. This causes the water to push up against the volute, having a backwards curve makes the normal closer to the volute and also probably helps reduce flow separation at the tip of the vane. At least, this is my postulation.
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The vanes accelerate the water in a circle, but the water molecules are not tethered to the rotating axis like the vanes are, the force imparted from the vane is thereforce only normal to the vane (plus a tiny amount of friction toward the center, so water's own inertia will keep it going mostly normal to the face of the vane. This causes the water to push up against the volute, having a backwards curve makes the normal closer to the volute and also probably helps reduce flow separation at the tip of the vane. At least, this is my postulation.
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Jim
Just a super cool topic thanks. can anyone explain what considerations need to be known to determine the best amount of clearance to have between the major outside diameter of an shielded impeller and the valute housing. I would guess as little as possible maybe ideally only a few thousandths of an inch or enough to handle wear and run-out. but something about past lectures in fluid Dynamics makes me think there may be more to it. Surely when moving screened solid waste. maybe when moving clear water also?
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Just a super cool topic thanks. can anyone explain what considerations need to be known to determine the best amount of clearance to have between the major outside diameter of an shielded impeller and the valute housing. I would guess as little as possible maybe ideally only a few thousandths of an inch or enough to handle wear and run-out. but something about past lectures in fluid Dynamics makes me think there may be more to it. Surely when moving screened solid waste. maybe when moving clear water also?
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Kenneth
Great descriptions. For the Impeller, and the inside of the Volute I would go for a material that does not react chemically to water. Instead of Iron I would use copper. Maybe even consider a bladeless impeller. For I know that Kaplan turbines are destroyed on a micro level by micro turbulence. And need maintenance every 5 - 10 years.
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Great descriptions. For the Impeller, and the inside of the Volute I would go for a material that does not react chemically to water. Instead of Iron I would use copper. Maybe even consider a bladeless impeller. For I know that Kaplan turbines are destroyed on a micro level by micro turbulence. And need maintenance every 5 - 10 years.
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Conan
Plunger or water pump. The correct shape of the blades reduces the electrical voltage. The design prevents water from reaching the electrical parts and extends the life of the engine. A question for fun. What is the relationship between air engineering and water engineering?
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Plunger or water pump. The correct shape of the blades reduces the electrical voltage. The design prevents water from reaching the electrical parts and extends the life of the engine. A question for fun. What is the relationship between air engineering and water engineering?
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Razumikhin
What are the pushing limits? For example, could a pump like that hold a column of water above it of 3 storeys, 10 storeys? Before it couldnt push the weight anymore. This is an interesting part of the physics I am curious about
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What are the pushing limits? For example, could a pump like that hold a column of water above it of 3 storeys, 10 storeys? Before it couldnt push the weight anymore. This is an interesting part of the physics I am curious about
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Yia
I've always wondered how they keep the space between the shaft and the housing sealed from water leaks? There has to be some kind of space between moving surfaces or else movement couldn't occur right?
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I've always wondered how they keep the space between the shaft and the housing sealed from water leaks? There has to be some kind of space between moving surfaces or else movement couldn't occur right?
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Ray
Belt drive on a centrifugal pump? That's a new one for me. The pump's good for 50 years but the belt has to be replaced every year or two? Sound's like a maintenance man's looking to make some hours.
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Belt drive on a centrifugal pump? That's a new one for me. The pump's good for 50 years but the belt has to be replaced every year or two? Sound's like a maintenance man's looking to make some hours.
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NiD
I have a kirloskar pump in my house that still works after damn 38 years! we replaced it hoping new motors will be more efficient. it still works and never had damage except capacitor replacement
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I have a kirloskar pump in my house that still works after damn 38 years! we replaced it hoping new motors will be more efficient. it still works and never had damage except capacitor replacement
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Sachin
Sir i need solution for selection of pump for agriculture land but the distance between land & pump set place is 1. 5 km &land area is Height of 30 feet from pump set place I need help
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Sir i need solution for selection of pump for agriculture land but the distance between land & pump set place is 1. 5 km &land area is Height of 30 feet from pump set place I need help
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Erik
I really appreciate your videos man! Im an HVAC service technician and I can safely say I feel more comfortable working on equipment after watching your videos. Thank you!
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I really appreciate your videos man! Im an HVAC service technician and I can safely say I feel more comfortable working on equipment after watching your videos. Thank you!
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Ibrahim
My only question is why does an area of low preassure form at the eye of the impellor when it spins?
What exactly is the physics behind that?
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My only question is why does an area of low preassure form at the eye of the impellor when it spins?
What exactly is the physics behind that?
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bence
2: 12 yes, this is how to make a friction water heater. Put oil in a closed in/outlet compressor and submerge the water for heat your house
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2: 12 yes, this is how to make a friction water heater. Put oil in a closed in/outlet compressor and submerge the water for heat your house
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Tesco
So is this is used for some boats to create thrust for the boat as water enters the outlet. If outlet was directed horizontally of course
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So is this is used for some boats to create thrust for the boat as water enters the outlet. If outlet was directed horizontally of course
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Moderax
As a noob who just wanted to know what those pumps do I must say its quite simple at the core but yet so beautifully executed.
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As a noob who just wanted to know what those pumps do I must say its quite simple at the core but yet so beautifully executed.
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Pj
Can you do videos on turbine pumps and how they work? I cant seam to comprehend the difference from centrifugal pumps in my head.
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Can you do videos on turbine pumps and how they work? I cant seam to comprehend the difference from centrifugal pumps in my head.
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Douglas
Thanks a lot, i work with theese kinds of pumps everyday but my knowledge of them is limited! Thanks again for this video!
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Thanks a lot, i work with theese kinds of pumps everyday but my knowledge of them is limited! Thanks again for this video!
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rhino2348
I've taken a class on turbomachinery, but this has explained it to me much better than I've ever seen before. Thank you
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I've taken a class on turbomachinery, but this has explained it to me much better than I've ever seen before. Thank you
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Daniel
Cool video the pump case where the impeller is located it reminds me so much of a turbo charger used on trucks and cars
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Cool video the pump case where the impeller is located it reminds me so much of a turbo charger used on trucks and cars
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JCFG
my buiding has these pumps, it's been more than 40 years and yes they requiere maintenance but they keep working. insane!
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my buiding has these pumps, it's been more than 40 years and yes they requiere maintenance but they keep working. insane!
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The
amazing vidoe, thank you, a suggestion, it would be great if you could talk louder and with a little more energy
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amazing vidoe, thank you, a suggestion, it would be great if you could talk louder and with a little more energy
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Kristopher
Great vid thanks! Is that blade shape the most efficient way to push all fluids or just water-like ones?
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Great vid thanks! Is that blade shape the most efficient way to push all fluids or just water-like ones?
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Abdul
Thank you sir, Sir pls tell me that can we use to pump sand from river using centrifugal pumps. Pls reply
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Thank you sir, Sir pls tell me that can we use to pump sand from river using centrifugal pumps. Pls reply
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