IPT SCREW PUMP , 3-SCREW PUMP & TWIN SCREW PUMP

Working Principle
A pair of specially profiled screw, machined integral from solid stock and well supported on antifriction bearings run in precision bored interchangeable casing liners.Each screw set has one

"IPT" - a leading name in the field of Positive Displacement Rotary pumps since 1968 introduced for the first time in India the concept of "Three Screw Pumps" already in 1970's. Foreseeing the growing demand for totally reliable fuel and lube oil pumps for Thermal and Hydel Power Plants, Fertilizer, Chemical and Steel Projects a beginning was made by importing critical components and building pumps locally. Over decades, thousands Three Screw pumps have been manufactured and delivered. Valuable experience gained and modern manufacturing and testing facilities established under joint collaboration from world-renowned German company.

Todayp IPT is undisputed leader not only in Three Screw pump technology but equally in the other types - namely Twin Screw, Single Screw/ Progressing Cavity - as well as the conventional types like Shuttle Block, Internal Gear, External Gear, Trochoidal and Vane types. This unique position, combined with years of Application Engineering expertise and knowledge of Process Engineering requirements offers direct benefit to customers by the right choice of the pump design selection for almost any given duty parameters.  IPT pumps are on the OEM list of practically all major plant and equipment manufacturers, consulting organizations and has met with approvals from third party inspection agencies - national and international. Reliable performance of thousands of  IPT Three Screw pumps in India and overseas - over decades is the silent testimonial of the hard and dedicated efforts behind this success. Working Principle IPT Three Screw pumps employ just three screw elements - one power screw and two idler screws running in the three precision bores in the housing or liner. The screws are so profiled that they form a liquid tight seal between the thread. As the screws rotate, pockets/ cavities are formed where liquid gets trapped and conveyed from one end of the infinite stroke. This results in smooth, pulsation free flow with extremely low noise and vibration levels, almost impossible to be achieved by any other design of positive displacement or other types. The power rotor does not drive the idlers as commonly believed. The hydraulic forces acting on screw flanks turn the idlers torquelessly thus reducing the friction. The idlers simply roll over the root diameter of idler dia.reduce the unit pressure, centralize the power rotor and absorb the radial loads. A balance piston integrally machined on power rotor takes care of axial thrusts. While in operation, the screws are in hydrodynamic balance on film lubrication and do not require any additional bearings. The one ball bearing often used is only for axial positioning of rotor and safer operation of mechanical seals. Small rotor dimensions enable the pump to be operated at high speeds directly coupled 3000 or 3600 RPM motors or other prime movers. Such unique design and features has demonstrated excellent reliability with pumps in operation continuously non-stop for decades together without replacement of any components or maintenance on clean fluids.

Salient Features

High reliability High speed capability Long service life Insensitive to viscosities Negligible maintenance High pressure capability High efficiency Axial flow - no churning, chewing or shearing Self priming Excellent suction capability Smooth pulsation free flow Hydraulic balancing of forces eliminates need for any bearings Low noise and vibrations

Performance Range

TYPES CAPACITY LPM PRESSURE Kg/cm2 VISCOSITY RANGE cSt TEMPERATURE °C T 3S FP 10~100 40 3~750 180 T 3S L 20~500 16 3~750 180 T 3S N 20~2500 64 3~1500+ 180* T 3S M 20~2000 120 3~1000+ 180* T 3S H 20~1000 250 3~1500 180 Figures given are indicative for range only considering speeds upto 2900 RPM. Three screw pumps can run to speeds upto 10000 RPM under special conditions. + Higher viscosities can be handled upto 50, 000 cSt or more. * Higher temperatures upto 250°C can be handled with special execution.

Typical Applications

Fuel Oil Service: Fuel oil burner service for Thermal Power Plant/ Industrial Package, Boilers, Furnaces, Kilns and Combustion systems.Fuel transfer and booster service for Captive Diesel/ Gas Turbine Plants and Industrial Combustion Systems, Fuel Oil Circulations and Centrifuge Feeding. Tank farm tank to tank transfers. Hydraulic Duties : Hydraulic governing service for Water Turbines, Inlet Penstock Valves. Low and medium pressure hydraulic applications, high pressure jacking oil service for rotor lifting for Turbines/ Compressors/ Alternators. Lubricating Duty : Pressure lubrication and cooling of bearings for Turbo Machinery, Gear Boxes, Bearing Lubrication of Coal Mills, ID/FD Fans, Diesel Engines, Steel Rolling Mills, Air pre-heater guide bearings, Compressors. Seal Oil Service : Hydrogen cooled Generators, Gas and Refrigeration Compressors.

Two Spindle Screw Pump ( Series IPT TD

IPT E &C Twin Screw pumps employ a unique principle that makes it the only choice for certain applications. No other design of Positive  Displacement Rotary pumps offer so much versatility in the operating parameters with guaranteed total reliability and maintenance-free service. Working Principle A pair of specially profiled screw, machined integral from solid stock and well supported on antifriction bearings run in precision bored interchangeable casing liners.Each screw set has one RH and one LH screw engaging with a similar but opposite hand screw pair.

A pair of hardened and profile ground timing gears synchronize the screws to maintain a small but positive clearance between the flanks thus ensuring no metal to metal contact. The pumps can therefore run dry for sometime without any damage. This unique feature enables to run the pump even dry and handle fluids that do not have enough lubricating value and also very low or high viscous products. Consequently, since there is no metal to metal contact; wear and tear is reduced to the minimum, ensuring extremely long service life. With two pairs of screws running in the same casing, the internal velocities are very small - consequently the NPSHR is practically the lowest even when the pumps run at motor speeds and while handling viscous products. Opposed screw pitches totally eliminate axial thrusts. Relatively small diameters of screws enables the pump to operate at high speeds directly coupled to prime movers - without the need for speed reducers even while handling high sealings always under suction pressure, thus making use of simple, inexpensive seals. The axial flow without turbulence, rotation, churning, chewing guarantees gentle handling of products. Noise and vibration or ---- levels are about the lowest. Positive clearance between running parts makes it easier to construct the pump in different materials safely, especially in stainless steel, without the fear of seizing. Thus a variety of fluids can easily be handled by selecting the right materials of construction. IPT E& C PUMPS have earned a reputation of being the most reliable Positive Displacement Pumps for practically any given application since 1968 due to the widest choice of designs available and excellent knowledge of application engineering. Continuous Research and Development together with modernization with CNC machines and testing facilities has enabled us to accept challenging jobs. Thousands of IPT E &C pumps in operation to the total satisfaction of the users in core industries throughout the country and abroad are a silent testimony.

Salient Features

Positive clearance between rotors Insensitive to varying viscosities No metal to metal contact between rotors Long maintenance free service Dry running capability Lowest NPSHR Negligible wear over years Shaft sealing at suction pressures Axial smooth steady flow Axial thrusts completely eliminated High speed running Interchangeable liner Pulsation free output Adaptability of various MOC Negligible vibrations

Typical Parameters

Temperature: -30 to +350°C Viscosity: 1cSt to 50,000 cSt or more Pressure: Normal 16 bar/ 24bar, with special designs upto 50 bar Specialties: Partial heating/ complete heating/ cooling arrangements Sealing: Stuffing box/ mechanical seal with or without quenching/ heating/ cooling Mounting: Horizontal foot mount/ vertical pedestal Accessories: Relief valves, base frame, coupling, coupling guard, companion flanges, pressure gauges, electric motor/ diesel engines, variable speed drives and as per customer requirements.

Typical Applications

Loading / unloading of fuel oil and other products from: Railway wagon rakes, Truck tankers, Barges, Ships and Tankers. Bulk cargo handling. Lubrication, circulation and cooling. Process pumping of high viscous products, bitumen, molasses, soap and similar products. Long distance pipeline pumping of viscous products.

Typical Liquid List

Additives Paraffin Base oils Petroleum products Bitumen Polyester Fuel oils - all grades Residues Lubricating oils - all grades Soap Lyes Vegetable oils Molasses

Major Industries

Petroleum refineries, Terminals, Depots, Oil blending stations, Thermal power plants, Steel plants, Fertilizer industries, Petrochemical plants, Carbon black, Sugar, Paper and Pulp, Marine.

Two Spindle Screw Pump ( Series IPT  TS )

Typical Applications call for IPT Uploading all grades of fuel oils from wagons Loading / Uploading of road tankers Cargo oil off - loading from Barges and Ships Transfer and circulation of lubrication, cooling and circulation Handling of viscous products like molasses, soap, bitumen and other similar fluids.   Typical Liquid List mastered by IPT Additives Bitumen Form Furnace Oil Glycerin LDO LSHS Lubricating Oil Molasses Soap Stock Tar Vegetable oils And a host of other fluids including petroleum products, Naptha, Kerosene and even water or sea water. Advantages make Tushaco the leader Self priming even in adverse condition Rotating elements free from metal to metal contact Reduced friction loss No damage on dry run Negligible wear and tear High section lift Very low NPSHR value Efficient to handle low or high viscous materials In - built mechanism to clear entrapped gas / air Designed to run at high speed while handling high viscous materials No need for any gear reducers - saves cost, power and space Compact installation - horizontal or vertical Maintenance free Capability of cold starting Key Industries rely on Tushaco Petroleum Refineries Petroleum Terminal and Depots Steel Plants Thermal Power Station Petro Chemical Industries Food Processing Plants Fertilizer Plants Captive Diesel Power Plants Marine applications IPT TS Series Data Model TS Intel outlet size ANSI 150 # or Din NP 16 Capacity range @ 1450 rpm M3 / Hr. 105 3" ( NB 80 ) 10 to 24 135 6" ( NB 150 ) 20 to 100 180 8" ( NB 200 ) 80 to 150 Temperature of pumped liquid up to 1800C Inlet pressure up to 6 bars Outlet Pressure up to 16 bars Viscosity range 0.6 to 1500 cSt Relief Valve  built on Jacketing Arrangement optional

Executions : Internal bearings, External bearings, Horizontal / Vertical of road tankers, Relief Valve and other features. MOC: CI, CS, SS 304 / 316 or other.