Raj Pumping Systems

Prabhat Road, Pune, Maharashtra

We are in to manufacturing of HYPN since 1994. More than 1000 installations are the testimony of our expertise and quality of manufacturing. We offer the following products and services.

• HYPNS with 1 to six pumps running in parallel
• Pumps in parallel and in series for high head application, with out break tank
• Pressure switch/VFD controlled systems
• Bladder vessel in pump room or at top level in the zone.
• PUMPS:We offer following types of pumps depending upon clients requirement/suitability at site
  • Vertical in line st. steel (AISI 304) Type- HYDRO BOOST-R
  • Mono submersible pumps for low and medium head application-HYDRO BOOST-SM
  • MONO BLOCK pumps for low and medium head , economical duties- Type HYDRO BOOST-M
  • Submersible pumps in casing pipe, Type- HYDRO BOOST SC
  • VERT/HORIZONTAL Submersible Pumps-HYDRO BOOST-S
• HYPN System DESIGN :We offer the systems as per consultants clients design. We also provide free design service upon getting full information from the client
• CONSTRUCTION :HYPN Systems are packaged units consisting, pumps, piping, bladder vessel, control panel duly piped and wired. All components are mounted on Base frame. At site it is only required to give suction and delivery connection, and one electrical connection. In some cases components are sent separately to avoid bulky packaging. These are assembled at site
• RANGE :The HYPNS are offered in wide range of duties, without any limit for Discharge and Head. HYPNS suitable for working efficiently in wide range of capacities. Low demands are met by Bladder vessels.The HYPNS can be offered in material of construction as per requirement.
• APPLICATIONS:
  • As a domestic and flushing water supply, Hot water supply units in Multistoried buildings, Colonies, Industry etc
  • As a water supply unit for curing water to cement plastered walls and ceilings

Water is distributed by gravity from ESRs located at a convenient place. ESRs are in turn are filled from a UGR which receives the water from main balancing reservoir, by using pumps. This gives great opportunity to save capital cost and running cost as seen in the following case study

RAHATNI PUMPING STATION- PIMPRI- PUNE MAHARASHTRA=INDIA
ESR capacity is 4.4 million liters.UGR capacity is 100, 000 liters. A 30 hp pump is used fill the tank in 22 hours. Connecting pipe to UGR is of 400MM DIA via rising main of 900mm dia. The inlet pressure is 2.0kg/cm sq. -Water was taken in UGR to avoid sucking from rising main and creating imbalance to other users connected to the system ESR served only 40000 people.

OUR SOLUTION :We provided online BOOSTER on 400 dia pipe, with Variable frequency Drive. It was possible to fill ESR in less than five hours. The power consumption at reduced speed was less than 30hp.

BENEFITS :ESR could be filled five times per day. The capital invested on ESR could be used for 2 lac people instead of 40 thousand people, apart from saving in energy costs.
The BOOSTER system is working satisfactorily for more than 10 years.

DESIGN :
The system consists of

• PUMPS
• CONTOL PANEL WITH VFD
• WATER HAMMER CONTROL DEVICES
• BY PASS LINES

• Transducers
• Civil structures
• Alarm systems
• Piping and valves

COMMENTS :. With modern control systems it is possible to modify the existing systems and put the invested capital for multiple fold usage. Millions of people can get better water facilities at marginal costs.

BOOSTER SYSTEMS- FOR LONG DISTANCE PUMPING

Long distance pumping is a highly challenging job.
VAN ENGGCo was engaged to conceptualize the Design for RAMAKRISHNA GODAVARI LIFT IRRIGATION SCHEME near AURANGABAD in Maharashtra State
( Total hp of pumps in all 3 stages=15000hp, with 1100 dia pipe and total length of RM=27 KM, to irrigate 10000 hectares )

• Single stage pumping was ruled out , because of high cost of heavy duty pipes, AND WATER HAMMER PROBLEMS.
• A three stage pumping was considered as per conventional method. With intermediate sumps
• Anticipated Problems
  • The sump had to be located in a village In case of imbalance in pumping, the water will overflow and flood the village and surrounding fields
  • Land availability will be a problem
  • Energy consumption was very high

Municipal corporations face water distribution problems, due to undulations in the citys landscape and/or extension of boundaries. These can be solved byINSTALLATION of BOOSTER SYSTEMS. Following case studies explain the application

PANCHAVATI AREA- PASHAN ROAD PUNE
The area is located on higher elevation. If ESR (6 million liter capacity) is kept full, then only 5000 residents would get 20- 25% of their requirement in 12-14 hours. For balance water , TANKERS were used by paying Rs 7000/day.

Pune Municipal Corporation (PMC), Proposed a UGR .ESR and Pumping machinery with a Budget og Rs 85 Lacs, and completion period of 14 months. Staff of four people Running cost of Rs 450/day, free land of 5000sq ft.

We atVAN ENGG COproposed to PMC that we would ensure supply of water in the same quantity and pressure with BOOSTER system, at Rs 17 lacs, complete the job in TWO months, system will be automatic, electricity charges will be Rs 200/day, the BOOSER SYSTEM can be installed below the road and it will not be affected by flooding
The BOOSTER SYSTEMis running with utmost satisfaction for last 15 years. .

Main components are

• Submersible pumps in casing pipe
• Valves and piping
• Water hammer control devices
• Control systems
• Civil work

APPLICATION :

• As water BOOSTERS, to correct the distribution problems.
• To increase the flow in the existing piping net work for quick results
• To improve the efficiency of the system
• Most Economical

We design, manufacture, supply, erect and commission complete

• Fire Hydrant Systems,
• SPRINKLER SYSTEMS,
• FOAM SYSTEMS
• SMOKE DETECTION & ALARM SYSTEMS

We supply erect and commission Pump house equipments consisting of following

• END SUCTION, OR HORIZONTAL SPLIT CASE PUMPS AS PER TAC SPECIFICATIONS
• Electric motors and control panels as per TAC SPECIFICATION
• Diesel Engine pump sets as per TAC Specifications
• Jockey pumps
• Pressurisation pumps from over head tanks
• Bladder vessels.

Hydro-Boost-M are packaged pumping systems incorporating Multiple Monoblock pumps, diaphragm tanks, control panel duly piped and wired and are dispatched in ready-for-installation condition. The Hydro Boost units are fully tested. The pumps motors, electrical are chosen from a wide range of reliable Manufacturers like Kirloskar, L & T, Siemens etc.

OPERATION :
The pumps start/stop automatically, sensing drop/rise in pressure, when outlets are opened/closed. The low demands are met by the diaphragm tanks. The running of appropriate pumps in their high efficiency zone, ensures, saving of energy from zero to peak load.

APPLICATION :
Multistoried Buildings, Bungalows, Apartments, Industries, Automatic Water Supply & Pressure Boosting. First Air Fire Fighting, for Cleaning & Washing, and Innumerable others.

SALIENT FEATURES

• Fully assembled, wired and preset HYDRO-BOOST ready for use.
• Easy Installation. One Electric and Two Hydraulic connections. Rigid foundation not required.
• Diaphragm Vessel with easily replaceable food quality diaphragm. Tank location not critical. If ensures noiseless, pulse free pumping.
• Easy operation and maintenance features at lower cost.
• Compact, energy efficient, economical too.
• Eliminates overhead tank, Can get any desired pressure in the system or change the pressure easily by simple modifications.
• Useful for new installation, can be retrofitted on existing and OLD installations.
• Custom design and operations available to meet any demanding situation. Different types of pump options possible.
• Single source responsibility for preselection assistance, design, installation commissioning and 12 months guarantee.

Taj Residency - Indore, Indian Hotel Co. - MumbaiHanns Inn Hotel - HubliHotel Airport Kohinoor - MumbaiMcdonalds Restaurant - Andheri. V.T. Pune, Charni Road, ThaneTaj Hotel - GoaSowbhagya Hotels - OotiWest Inn Ltd. Hotel - AhmadabadHotel Management institute - PuneTaj Hotel - Mumbai

Bladder vessels alleviate negative pressures more effectively, than other forms of water hammer protection, and they can maintain a positive pressure in the pipe line at all stages following pump trip. This is accomplished by forcing water out of the vessel in to cavity, otherwise created following pump trip or flow stoppage at upstream end. The pre charged compressed air forces water from the BLADDER vessel in to the pipe line allowing the water column travelling up the pipe line to maintain its momentum. Friction and other head losses tend to reduce the water velocity and therefore subsequent oscillations.

The outflow from the Bladder Vessel is throttled to some extent . The outflow line consists of a non return valve. The return flow back in to Bladder vessel is appropriately throttled by the smaller size by pass line, which is provided with a control valve to adjust the throttling as per site requirement.In this manner continuous deceleration occurs by returning water column and y by air cushion.

The vessel is made out of high tensile carbon steel and is manufactured to rigid quality standards, as burst vessels containing air are more dangerous than those containing only liquid. The Bladder is sandwiched between top and bottom flanges as shown in the catalogue. Entrapped air from the Bladder will be removed by the air valve located at the top flange.
For special application where it is essential to allow air entry in to pipeline, we can provide arrangement, such that, the Bladder vessel forces water and then the air to contain oscillation of water columns.

The Bladder is coated with food grade Butyl rubber for normal water application. For sewage water we can supply Bladders coated with Nitrile rubber. For petroleum products the pre charge will be of Nitrogen and Bladder will be coated with nitrile rubber.
We can design optimum size of the Bladder vessel for a particular site by using simplified monographs presented byD.Stephenson, F.ASCE

Features :

• Available in 6, 10, 16, 20 and 40 Bar working pressure
• Sizes from 8 to 10, 000 liters
• Larger inlet size to water chamber as per water hammer analysis.
• Min vessel thickness in 6 mm, inclusive of 2 mm corrosion allowance.
• Water does not come in contact with vessel.
• Full size floating Bladder reinforced with high strength nylon, coated with food grade impervious Butyle rubber for long life.
• Drain arrangement to check pre charge air pressure
• Optional, protection cover, and base frame
• Indigenous tailor made designs. Easy availability of products and spares.

Air chambers (also called as Hydro pneumatic tanks) have proved to be most effective devices for control of water hammer, but are complicated and expensive. VAN make BLADDER VESSELS are improved air vessels, and eliminate all inconveniences of old Air vessel designs. Indigenously designed and produced, more than 1000 Bladder vessels are in use, since last 20 years.

Application :

• For water hammer control. The Bladder vessel inlet should be connected to main line as near to non return valve as possible. In any case the distance should not exceed 5*D (D=Dia of NRV)
• If the pipe lines are long, one can install NRV at intermediate location. Bladder vessel can be installed after the NRV.
• The return wave water column forces water through by pass line at very high velocity, and this velocity is killed instantly in the large volume of the Bladder vessel, and will release dissolved air. The air escapes through air valve provided on the top of the vessel
• The Bladder vessels control the pressure wave shocks created by sudden stoppage of pumps due to power failure, or sudden stoppage of valves, or sudden starting of pumps.
• Special design are available for sewage water containing fibrous material.
• Small units are available for arresting water hammer shocks and unwanted noise in Domestic pumping systems.