My remote village in Gujarat would otherwise been much peaceful if the clamours of acute water scarcity were eliminated beforehand. The cities here enjoyed all modern day technologies while the villages lacked much required technological benefits. I am an engineering grad from a famed university of Allahabad. While lots of golden opportunities would have outshined my career, I chose to go serve my village deal with acute water crisis.
Monsoon was on its full swing when my sister and mother still carried buckets of water from one municipality water supply installed half a kilometre away from my place. My feeble mother cried every day after the routine work to suffice our household water needs while it was my sister’s time to go get married. I had to do something! Lucky enough, I had really helpful hands extended from the city (that were those of my engineering peers) that I was able to address this water issue.
Our village had enough underground water. If deep well turbine pumps were installed, the problem could have addressed most efficiently. At least half the village would have seamless water supply at their own home with one pump installation. I talked with the nearby municipality and collector to help our village emerge out of this turmoil. They agreed! After a long haul of procedure, I along with my friends finally installed one. Now I am all knowledgeable about turbine pumps. I would like to share with you some insights!
What are Vertical Turbine pumps and how they work?
They are specialized centrifugal pumps that are used to move water from well or reservoir that is deep underground. The pumps are normally determined by an AC electric instigation engine or by a diesel motor through a right point drive. The pump end comprises of no less than one turning impeller that is appended to a pole and coordinates the well water into a diffuser packaging called a bowl.
Multi-stage arrangements utilize numerous impellers on the same shaft to make higher weight that would be required for more profound wells or higher obliged weight (head) at ground level.
They work when water enters the pump at the base through a BELL-formed part called the suction ringer. From that point it moves into the first stage impeller, which raises the water’s speed. The water then enters the diffuser bowl instantly over the impeller, where this high speed vitality is changed over into high weight. The dish additionally coordinates the liquid into the following impeller found quickly over the dish, and this procedure proceeds through the greater part of the phases of the pump.
After the water leaves the last diffuser dish, it goes through a long vertical section pipe as it ascends the well exhaust toward the surface. The turning shaft inside this section is bolstered at three- or five-foot interims with sleeve bushings that are mounted inside the segment and greased up by the water moving past them. At the surface is the pump release head, which permits the stream to alter course, around the release channel. A vertical high push A.C. engine is mounted over the release head.
Challenges during & after installation of pump:
Upthrust Problems created a lot of havoc while installing them. A vertical pump operates with pump shaft in downward thrust. Operating pump in upthrust with pump shaft being compressed can give rise several problems:
1. The compression load can break the shaft resulting into high radial vibration.
2. Excessive load can bow the shaft permanently.
3. The radial shaft vibration can cause wear and tear to the bearings and mechanical seals.
4. Excessive radial vibration and upward forces can result in failed couplings.
5. Pump impellers can be damaged owing to constant rubbing of bowl.
Tips during initial start up of a vertical pump:
1. Check the hold-down jolts on the engine, baseplate and release rib. Check all grease frameworks. Change the seal or pressing box organ; organ nuts ought to be finger-tight at start-up.
2. Verify the pump has adequate liquid in the sump or supply lines. Verify all suction valves are completely open on barrel-sort pumps. Try not to run any pump without liquid.
3. Confirm right wiring and turn of engine shaft:
a. For vertical empty shaft engine driven pumps, guarantee the top shaft nut (changing nut) and gib key are evacuated and the engine is not coupled to the pump. The pump shaft can turn unreservedly from the pump engine. As an included precautionary measure on an one (1) head shaft get together it is prudent to evacuate the engine drive grip plate to guarantee that it does not “rankle” or seize to the head shaft when the engine is ‘knock’. On the off chance that a two (2) piece head shaft is supplied it is exhorted not to introduce the upper head shaft until after the engine has been “knock” for rotational confirmation. Before evacuation of the engine drive grip plate for any reason, it is prescribed to ‘match stamp’ the segment at the first area to guarantee right re-establishment as this is an adjusted part. At this opportunity with the drive grasp plate evacuated, note if the head shaft is focused inside of the engine empty shaft. If not, a misalignment has likely happened amid establishment and ought to be researched and revised as of now.
b. For vertical strong shaft engines, guarantee the pump to engine pump coupling is not joined and the pump shaft can turn feely from the pump engine.
c. Guarantee all devices, hardware and staff are clear furthermore, far from every turning segment.
d. Check turn and right wiring of engine by flick beginning the engine. It is a bit much or alluring to empower the engine for more than ¼ of a second or license the engine to rushed to full speed.
e. As the engine shaft starts to moderate from the exceptionally concise association with its energy source, watch the engine shaft turn. The revolution ought to match the course bolt of the pump nameplate. In the event that this does not coordinate, a qualified electrical technician will need to change the leads on the engine association and the procedure above rehashed.
4. At the point when pivot is confirmed right, reconnect the pump and engine, and change the impellers (see guideline on modification).
5. Begin the pump and check amperage on the engine. Run the pump sufficiently long to establish that no unordinary clamour alternately vibration is available and that the mechanical seal or pressing box is working appropriately
After a challenging span of installation time for more than a month, my village now has enough water supplies to feed the daily needs of water. Technological advent has made us prosper with full bloom. Vertical turbine pumps just came as a boon for our village and it is a boon for others too, which the world is yet to witness!