newmans mud pump gpm free sample

Rig pump output, normally in volume per stroke, of mud pumps on the rig is  one of important figures that we really need to know because we will use pump out put figures to calculate many parameters such as bottom up strokes,  wash out depth, tracking drilling fluid, etc. In this post, you will learn how to calculate pump out put for triplex pump and duplex pump in bothOilfield and Metric Unit.

How to read a pump performance curve remains a topic of great interest across the food, dairy, beverage, and pharmaceutical processing industries, so in this post we provide important information on two of our most popular styles —

With manufacturing lead times growing, selecting the right pump the first time is more important than ever. At the same time, understanding the full range of each pump’s capabilities under specific operating conditions gives you a window to your options, so you’re not locked in to just a few choices during the selection process.

Also called a pump selection curve, pump efficiency curve, or pump performance curve, a pump curve chart gives you the information you need to determine a pump"s ability to produce flow under the conditions that affect pump performance. Reading pump curves accurately helps you choose the right pump based on application variables such as:

A pump has to produce enough pressure differential to overcome head loss created in pipe systems by friction, valves, and fittings. A pump curve shows the two performance factors on the X,Y axis so you can see the volume of fluids a pump can transfer under various pressure conditions.

For example, if you know the flow rate your application requires, you find the gallons per minute (or hour) rate along the bottom horizontal line of the curve and then draw a line up to the head/PSI you require. The curve will show you if the pump you have selected will perform in that application.

Centrifugal pump curves are useful because they show pump performance metrics based on head (pressure) produced by the pump and water-flow through the pump. Flow rates depend on pump speed, impeller diameter, and head.

Head is the height to which a pump can raise water straight up.Water creates pressure or resistance, at predictable rates, so we can calculate head as the differential pressure that a pump has to overcome in order to raise the water.

Common units are feet of head and pounds per square inch. (A pump curve calculator might offer different units such as Bar or meters of head). As Figure 1 illustrates, every 2.31 feet of head equals 1 PSI.

Flow is the volume of water a pump can move at a given pressure. Flow is indicated on the horizontal axis in units like gallons per minute, or gallons per hour, as shown in Figure 2.

Total Dynamic Head (TDH) is the amount of head or pressure on the suction side of the pump (also called static lift), plus the total of 1) height that a fluid is to be pumped plus 2) friction loss caused by internal pipe roughness or corrosion.

Let"s say you want to know the flow rate you can achieve from the pump in Figure 3 at 60 Hz when the design pressure is 80 PSI. In this case, the curve shows that the pump can achieve a flow rate of 1321 gallons per hour at 80 PSI of discharge pressure.

Because some centrifugal pumps operate across a range of horsepower, their curves will include additional information. Figure 4, for example, features a pump that can operate from 2 to 10 horsepower depending on desired performance.

Reducing impeller size enables you to limit the pump to specific performance requirements. The curve above shows maximum pump performance with a full-trim impeller, minimum pump performance with a minimum-trim impeller, and performance delivered by the design-trim impeller, or the impeller trim closest to the design condition. Impellers are typically trimmed 0.20 inches (or 5mm) at a time.

In addition to pressure and flow, the curve at the bottom of Figure 4 indicates NPSHr, which stands for Net Positive Suction Head Required.NPSHr is the minimum amount of pressure required on the suction side of the pump to avoid cavitation, or the introduction of air into the fluid stream. NPSHr is determined by the pump. You always want NPSHa>NPSHr.

Good pump efficiency means that a pump is not wasting energy in order to maintain its performance point. No pump is 100% efficient, however, in the work it has to do to transfer liquids.

When selecting a pump and motor combination, consider not only the total current demand but future demand to ensure your selection has the capacity to meet changing requirements. To that end, sizing the pump for performance variables rather than peak efficiency is a common practice.

For example, while the middle of the pump efficiency curve is generally where a pump is operating at maximum efficiency in terms of pressure and flow rate, moving right on the curve above shows an increase in horsepower needed to maintain a flow rate as head increases. For example, 2 hp is required for a flow rate of 40 gpm with 80 feet of head, but maintaining 40 gpm of flow at 110 feet of head would require a 3 hp motor.

You can audit pumping systems using pump performance characteristics. Once you determine the best efficiency point (BEP) for your application, you can make adjustments to improve overall system efficiency, such as adding a variable frequency drive (VFD) and changing the diameter of the pump impeller. Controlling flow rate by adjusting pump speed via VFD instead of pressure valves can result in better efficiency and greater energy savings.

When using pumps in parallel, you can increase flow rate at the same rate of head.As figure 5 illustrates, using pumps in parallel gives you a flow rate that is the sum of pump A and pump B’s flow rates.

A positive displacement (PD) pump produces the same flow at a given speed (in revolutions per minute--RPM) no matter what the discharge pressure. Positive displacement pump curves give you the information you need to determine a pump"s ability to produce flow under the conditions that affect pump performance.

As RPM increases, the pump flow increases, from 0 gallons per minute or (GPM) at 0 RPM, to about 130 GPM at 500 RPM. Remember that some performance curve calculators might include units such as liters per minute (LPM), so check calculation units when using calculators.

Fig. 7. A PD pump curve indicates pump capacity, on the horizontal lines, in units per minute. In this example, the curve indicates gallons per minute (GPM)andliters per minute (LPM)in the left margin and the vertical lines indicates pump speed in revolutions per minute (RPM).

Positive displacement pumps deliver a constant flow of fluid at a given pump speed. When viscosity increases, however, resistance to flow increases, so to maintain system flow at higher viscosities, pumps require more horsepower.

Low viscosity also affects pump performance in the form of slip. Slip is the internal recirculation of low viscosity fluid from the discharge side of the pump back to the suction side of the pump.The amount of slip in a PD pump is influenced by the fluid’s viscosity and the discharge pressure.

As discharge pressure increases, keeping viscosity constant, more fluid slips from the discharge side to the suction side of the pump, so the pump must spin at a higher RPM to maintain output.

In Fig. 8, a positive displacement pump curve shows the influence of viscosity on slip with a correction chart. With changes in viscosity and pressure, slip correction indicates that flow capacity drops from a high of about 7 GPM to a low of about 3.5 GPM. Once viscosity is over 1000 cPs, slip basically doesn’t occur in liquid sanitary pumps. If slip is not a factor, use the 0 PSI line to determine flow rate.

Because PD pumps generate flow to transport relatively high viscosity fluids, PD pump selection requires analysis of three key influences on fluid transfer:

Dynamic viscosity is a measure of a fluid’s resistance to flow. By common sense alone, we can imagine that water is less viscous, or resistant to flow, than corn syrup, so corn syrup has a higher viscosity than water. We measure internal resistance to flow as absolute viscosity (also referred to as dynamic viscosity). It is critical for the viscosity used to be consistent with “in pump” shear conditions, or shear rates of 800 or more s-1 (inverse seconds). As the following comparison shows, differences in viscosity vary dramatically by fluid:

Shear-sensitive liquids change viscosity when under stress,such as when they are hit by an impeller inside a pump. Some liquids become less viscous with increased force (called shear thinning), while others become more viscous with increased force (called shear thickening).

Continuing with the ketchup processing example, the next section discusses additional important information on pump curves: work horsepower (WHP), viscous horsepower (VHP), and Net Positive Suction Head required (NPSHr).

When you size a PD pump it will be important to select the correct brake horsepower. Brake horsepower (BHP) is the power the pump requires to overcome the discharge pressure. BHP is determined by adding the work horsepower (WHP) and the viscous (VHP) horsepower.

Work horsepower (WHP) is the horsepower required for the selected PD pump to achieve the desired flow rate considering the anticipated pressure drop from system components. Components like valves, heat exchangers, and filter/strainers, to name a few. WHP is sometimes called external horsepower.

Fig. 9. Work horsepower (WHP), is the horsepower required to operate a Positive Displacement Pump. As pressure from the discharge side of the pump increases, the pump requires additional horsepower to operate. For example, at 300 RPM and with 150 PSI, the pump requires 6.7 working horsepower.

Maintaining pump capacity at various viscosities requires meeting horsepower minimums, as shown in Fig. 10. There is a certain minimum horsepower requirement to force the rotating parts of the pump to turn, considering the viscosity of the fluid in the pump. VHP is sometimes called internal horsepower.

Fig. 10. Viscous Horsepower (VHP) is the power needed to turn rotating parts of the pump against the fluid inside the pump. At 300 RPM and a viscosity of 500 CPS, a pump requires 4 VHP.

As you processor, you need a pump that transfers product safely and efficiently from point A to point B. But with such a large variety of pumps, motors, and applications, picking the right pump can be difficult.That"s where we come in!

CSI is known as the experts in the specification, sizing, and supplying of pumping technology for hygienic industry processes. Speak with our knowledgeable pump team today and be confident in your next pump purchase!

Central States Industrial Equipment (CSI) is a leader in distribution of hygienic pipe, valves, fittings, pumps, heat exchangers, and MRO supplies for hygienic industrial processors, with four distribution facilities across the U.S. CSI also provides detail design and execution for hygienic process systems in the food, dairy, beverage, pharmaceutical, biotechnology, and personal care industries. Specializing in process piping, system start-ups, and cleaning systems, CSI leverages technology, intellectual property, and industry expertise to deliver solutions to processing problems. More information can be found at www.csidesigns.com.

This guide is intended for engineers, production managers, or anyone concerned with proper pump selection for pharmaceutical, biotechnology, and other ultra-clean applications.

The 2,200-hp mud pump for offshore applications is a single-acting reciprocating triplex mud pump designed for high fluid flow rates, even at low operating speeds, and with a long stroke design. These features reduce the number of load reversals in critical components and increase the life of fluid end parts.

The pump’s critical components are strategically placed to make maintenance and inspection far easier and safer. The two-piece, quick-release piston rod lets you remove the piston without disturbing the liner, minimizing downtime when you’re replacing fluid parts.

Pump Assembly, M1432HDD Mud Pump w/4 NPT X 2 NPT FLUID END, GOLD PISTON, AR VALVE ASSEMBLIES, SPLINED SHAFT, AUBURN #8, 5.5;1 GEAR BOX, LINER WASH SYSTEM