Liquid Dynamics - Pulsation Analysis, Diagnostics, and Software Models


	Liquid Dynamics Fluid Flow Control Animations Piping Manifolds / Pipe Base Blocks Pulsation Dampeners Pumps: Centrifugal Pumps, Vane Pumps, Lobe Pumps, More... Pulsation Dampeners Applications Pulsation Analysis / Hydraulic Analysis Pulsation Dampeners Disassembly Fluid / Mass Flow Control Meters with Valves Pipeline Shock / Surge / Water Hammer (Hardware) Hydraulic Accumulators / Hydropneumatic Volume Storage Analysis / Diagnostics LDi: Removing the Mystery LDi: Oscillograph Pulsation Signatures LDi: Measuring, Recording, Data Capture LDi: Modeling a Pipe System LDi: Design Detail Do's and Dont's LDi: Quasi Static Expressions Liquid Dynamics Elastomer Availibility Hydraulic Analysis Sitemap / Catalog Pulsation Dampeners Shock / Surge Alleviators Hydraulic Accumulators

DIAGNOSTICS
Pub 3 Main Menu

PulseDoctor, ShockDoctor & Pipe-Doctor

WitchDoctor - Which Analyst

PDF CATALOG
CONTACT US

LDi Catalog Printable PDF22

Example: Suction pressure too high. Driving the pump, instead of it "doing its thing".

Diagnostics
You have the hardware already? LDi has the tools. Certified calibrated signal conditioned transducers, Real time massive paper rate, oscillograph printers, GPIB data stream capture laptops, with FFT analysis, Yes even stethoscopes! Let us identify the heart of the problem on site.

"Joukowsky" velocity jump, excites RV.
Analysis
For more on the example please see LDi Pub.1 P.7

The answer is simple, as usual it’s the pipe,
it is stopping one cylinder filling – too long..

Pipe-Doctor Picture
For more on the "manifolding" examples, please see Octopussies LDi Pub. 5. P34, 35.
Survey
We will survey your pumping system pipe and advise where:
1. They are oversized
2. Direction changes are causing instability
3. "T’s" & "Hard 90’s" need replacing
NO = RPM doubled from 1950’s design, valves driven off seats by suction column oscillation
YES = Stop valves from "talking" to each other.
NO WAY = Typical manifold, turns pulse into an "orchestra"
YOU BET = intercepts

Liquid Dynamics International provides pipeline and pump user problem analysis, diagnostics, prediction by software, pulsation analysis, piping system analysis, and piping system simulation. For water hammer and shock solutions pulsation dampening and shock alleviating devices can be obtained from our associate websites.

PulseGuard Inc., and Ltd. for further information about pulsation dampeners / pulsation dampers.
PulseGuard. USA: Pulsation Dampeners | Pulsation-Dampeners.com: Pulsation Dampeners
PulseGuard Limited: Pulsation Dampers | PulseGuard für Deutschland: Pulsationsdämpfer

Large pressure vessels, jumbo bladders, float separator / big bellows type pipeline surge attenuators and
expansion / contraction volume compensators, surge alleviators, and shock alleviators.
Shock-Guard. USA: Surge Alleviators | Water-Hammer.com: Water Hammer
ShockGuard.co.uk: Shock Alleviators | Suction-Stabilizers: Suction Stabilizers

Information about energy saving in pumping systems, standby emergency power, safety shutdown systems,
hydraulic accumulators, and hydropneumatic accumulators.
Accumulators-Hyd: Hydraulic Accumulators
Accumulators.co.uk: Hydropneumatic Accumulators | HydroTrole: Hydraulic and Control Engineering

Protection against excess flow. Protect against toxic spills when pipes burst, guard against gushers and fluid
loss when hoses split. Flow-Guard against excess flow floods with flow fuses and breather bags.
FlowGuard: Flow-Guard - Flow Fuses and Breather Bags