EP1478467A1 - Detecteur acoustique d'obstruction dans un dispositif d'ecoulement de fluide par vortex - Google Patents
Detecteur acoustique d'obstruction dans un dispositif d'ecoulement de fluide par vortexInfo
- Publication number
- EP1478467A1 EP1478467A1 EP02702192A EP02702192A EP1478467A1 EP 1478467 A1 EP1478467 A1 EP 1478467A1 EP 02702192 A EP02702192 A EP 02702192A EP 02702192 A EP02702192 A EP 02702192A EP 1478467 A1 EP1478467 A1 EP 1478467A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrocyclone
- fluid
- acoustic probe
- sand
- outlet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
- G01N29/046—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks using the echo of particles imparting on a surface; using acoustic emission of particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0045—Plurality of essentially parallel plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0057—Settling tanks provided with contact surfaces, e.g. baffles, particles with counter-current flow direction of liquid and solid particles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/24—Feed or discharge mechanisms for settling tanks
- B01D21/2488—Feed or discharge mechanisms for settling tanks bringing about a partial recirculation of the liquid, e.g. for introducing chemical aids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/26—Separation of sediment aided by centrifugal force or centripetal force
- B01D21/267—Separation of sediment aided by centrifugal force or centripetal force by using a cyclone
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/302—Active control mechanisms with external energy, e.g. with solenoid valve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/30—Control equipment
- B01D21/34—Controlling the feed distribution; Controlling the liquid level ; Control of process parameters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C11/00—Accessories, e.g. safety or control devices, not otherwise provided for, e.g. regulators, valves in inlet or overflow ducting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
- G01F1/666—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters by detecting noise and sounds generated by the flowing fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/222—Constructional or flow details for analysing fluids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/36—Detecting the response signal, e.g. electronic circuits specially adapted therefor
- G01N29/42—Detecting the response signal, e.g. electronic circuits specially adapted therefor by frequency filtering or by tuning to resonant frequency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/024—Mixtures
- G01N2291/02416—Solids in liquids
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/025—Change of phase or condition
- G01N2291/0258—Structural degradation, e.g. fatigue of composites, ageing of oils
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/02836—Flow rate, liquid level
Definitions
- This invention relates to physico-chemical systems for the treatment of industrial water, and in particular to an acoustic detection system in the extreme extremes of non-standard densitometric fluctuations of an insoluble and liquid solid-component circulatory fluid involved in such a system. water treatment.
- this service water does not come from a municipality's drinking water system, but rather directly from a natural source of raw water such as a lake or a river. Therefore, variations in raw water quality from natural water sources require pretreatment to clarify the water and to stabilize this clarified water at a level below drinking water standards.
- Such pre-treatment of raw water may for example comprise a settling process in a water filtration unit comprising settling ponds connected in series.
- a coagulation reagent may first be injected with raw water upstream of the water filtration unit. The water then enters a basin of rapid mixing where the colloidal particles are destabilized. The coagulated raw water then goes to the injection stage of a polymer and fine sand. This sand serves as ballast to the flakes. The addition of polymer and moderate agitation accelerate the formation of bonds between micro-flakes, suspended matter and fine sand. Larger and denser flakes are trained.
- the sand-weighted flakes can settle rapidly in the lamellar zone, and end in the hopper or thicken the sludge.
- the clarified water is collected by a series of chutes, while the sludge at the bottom of the hopper is pumped continuously to a hydrocyclone, allowing the separation of sand and flakes.
- the function of the hydrocyclone is to reintroduce the sand into the injection basin and to evacuate the sludge.
- fine sand typically between 20 and 300 micrometers particle size
- coagulation zone which is kept turbulent and in which is mixed with this water in a controlled proportion a coagulating reagent
- This water treatment process treats turbidity, color, olfactory and taste characteristics, algae growth, suspended solids and metals.
- a problem associated with such a settling system occurs when the hydrocyclone clogs with the sludge, which prevents the fine sand from borrowing the hydrocyclone outlet and causing the fine sand to flow back into the overflow outlet. with the sludge that had to be separated from the fine sand. The sand is no longer recycled in the circuit, which leads to the degradation of the water treatment process. For the moment, only the passage in front of the hydrocyclone of the operator in a regular way with visual controls, makes it possible to prevent this kind of problem, which represents high costs in manpower not to mention a reliability not guarantee.
- the main object of the invention is therefore to provide a means for detecting signals before hydrocyclone blocking runners of an industrial water treatment unit, before this occurs, which makes it possible to alert the maintenance service to correct the situation before the beginning of the degradation of the water treatment process begins.
- a more specific purpose is to provide such a means of detecting blocking warning signals of this hydrocyclone, which will improve the control of abnormal losses of fine sand used to maintain a method of decanting raw water with recycling sand, in optimal operating mode.
- a corollary aim of the invention is to propose an improvement to the raw water treatment unit by settling after fine sand ballasting, as described in the European patent application No. EP 954000873.6 filed on April 19
- An important object of the invention is to ensure consistent quality over time of clarified water by the raw water treatment unit described in EP 95400873.6, supra, regardless of the conditions upstream of raw water.
- the invention relates in particular to a device for acoustically controlling the densimetric fluctuations of a fluid comprising fine sand and sludge and being able to circulate through a hydrocyclone, the hydrocyclone permitting the segregation of fine sand from the sludge of said fluid and comprising a tubular body.
- control device consisting of: a) a acoustic probe, sensitive to noise radiated by the flow of said sandy fluid in the hydrocyclone and intended to be applied against the outer pardi of said body of the hydrocyclone generally in the plane of sadite fluid inlet, said acoustic probe being sensitive at least at very low frequencies; and b) a microprocessor, operably connected to said acoustic probe and capable of transmitting an alert signal when said acoustic probe detects a non-standard amplitude variation of said radiated noise exceeding a threshold value.
- Said warning signal can be transmitted when said acoustic probe detects in high amplitude a 1/3 octave band centered on a frequency of 25 Hertz or 200 Hz.
- the invention also relates to a hydrocyclone for recycling fine sand used in an industrial water clarification unit, the hydrocyclone comprising: a) a tubular body having an outer wall and having at a first end a fluid inlet, to receive sludge and fine sand, a first sludge outlet transverse to said fluid inlet, for discharging said sludge, and at a second end a second sand outlet, for recovering said sand; b) an acoustic sensor, sensitive to noise radiated by the flow of said fluid in the hydrocyclone and applied against said outer wall of said body of the hydrocyclone, generally in the plane of said fluid inlet, said acoustic probe being sensitive at least at low frequencies between 25 and 500 Hertz; and c) a microprocessor, operably connected to said acoustic probe and capable of transmitting an alert signal when said acoustic probe detects an amplitude variation of said radiated noise exceeding a threshold value.
- Said acoustic probe could also be sensitive to the flow of fluid through said first outlet (overflow) of fluid.
- Said acoustic probe will preferably occupy a position on said hydrocyclone at an angle of about 45 degrees to a longitudinal axis formed by said fluid inlet.
- Said acoustic probe may be a sub-centimeter microphone, and then will further include a flexible elastomeric adapter, anchoring said microphone to said outer body wall of the hydrocyclone.
- the present invention also provides a method for determining flow parameters of a solid and liquid component fluid in a hydrocyclone, comprising the steps of: a) passing said fluid through an inlet of said hydrocyclone; b) creating a vortex inside said hydrocyclone, in order to segregate said fluid into a first pasty component, discharged through a first outlet of the hydrocyclone, and a second solid component, recovered through a second outlet of the hydrocyclone; hydrocyclone; c) detecting by means of an acoustic probe the noise radiated by the flow of said fluid in the vortex of the hydrocyclone; d) subjecting said radiated noise to a radio frequency analysis, and isolating the frequencies within the range of 25 to 500
- said transmission of the warning signal could be delayed until a 1/3 octave band centered on a frequency of 25 Hertz or 200 Hertz at a level exceeding said threshold value amplitude.
- the invention also relates to a device for electromagnetic control of the densimetric fluctuations of a fluid with solid and liquid components that can circulate through a hydrocyclone, the hydrocyclone permitting the segregation of the solid component of the fluid and comprising a tubular body having a first end a fluid inlet and a first outlet for the liquid component of said fluid transverse to said fluid inlet, and at a second end a second outlet for the solid component of said fluid, said control device consisting of: a) means electromagnetic sensors capable of remotely detecting electromagnetic emission generated by the flow of fluid in the hydrocyclone; and b) a data processing unit, operably connected to said electromagnetic means and capable of transmitting an alert signal when said electromagnetic means detect a non-standard amplitude variation of said electromagnetic emission.
- Figure 1 is a vertical section of a water clarification unit, comprising a fluid recirculation pipe with hydrocyclone;
- Figure 2 shows an enlarged elevational view of the hydrocyclone of Figure 1;
- Figure 3 is a broken longitudinal sectional view of the two opposite end portions of the hydrocyclone of Figure 2, and showing the acoustic probe according to the invention; and Fig. 4 is a cross-sectional view of the upper portion of the hydrocyclone, including the acoustic probe and its electrical control box. DESCRIPTION OF THE PREFERRED MODEL OF THE INVENTION
- FIG. 1 of the drawings shows an industrial water treatment unit.
- This unit 10 is for example prefabricated stainless steel.
- Unit 10 supports a water clarification process comprising:
- the unit 10 thus comprises at a first end a first coagulation tank 12.
- This tank 12 is supplied with raw water E through an inlet 14a formed at an intermediate section in height of a vertical wall 14 of the unit 10.
- a coagulation reagent (not shown) is injected into the raw water upstream of the unit 10.
- the coagulated raw water passes in a second injection basin, 18, in which polymers (not shown) and fine sand S are injected into coagulated raw water to form flakes.
- Fine sand S serves as flake ballast. The addition of polymers and moderate agitation accelerate the formation of bonds between microflakes, suspended matter and fine sand.
- the sludge consisting of flakes and sand S sediment and accumulate by gravity at the bottom of the hopper 26A, while the clarified water is collected in an upper basin 28 to be discharged through a washing water outlet 30 to be recovered economically afterwards.
- Some of the water clarified can also be filtered by a gravity filter 32, before being discharged through a filtered water outlet 33 at the bottom of the unit 10 and recovered economically thereafter.
- a line 34 with circulatory pump 36 connects the bottom of the hopper 26A to a point vis-à-vis the upper surface of the injection basin 18 spaced therefrom.
- a hydrocyclone 38 is installed at the upper end of the pipe 34, so that the sludge at the bottom of the hopper 26A can be pumped continuously to this hydrocyclone 38.
- the function of the hydrocyclone 38 is to separate the flocs from the Sand S, and therefore comprises an upstream inlet 38A, a first downstream outlet 38B, called the hydrocyclone, to return and recover economically by vortexing the fine sand S in the injection basin 18, and a second downstream outlet 38C, said overflow, of the hydrocyclone, to evacuate by vortex and throw through another pipe 40 the flakes without sand.
- the outlet 38C forms a pipe whose upstream portion 39 of its lumen is of restricted diameter, and thus forming a bottleneck with respect to its opposite downstream portion.
- this upstream portion 39 of overflow outlet tubing 38C is internally offset in the body 42 of the hydrocyclone 38 relative to the inlet 38A, so that the fluids coming from the inlet 38A can not penetrate through the upstream portion 39 of the overflow outlet 38C, unless it has traveled along baffles or vortex streams 41 in the vortex 43 of the hydrocyclone 38.
- FIG. 2 shows a hydrocyclone 38, comprising a conical body 42 having an inner surface 42A and an outer surface 42B delimiting a conical inner lumen 47.
- the inlet 38A is transverse to the longitudinal axis of the conical body 42, while the outlets 38B and 38C are coaxial with this longitudinal axis.
- the inlet 38A and the sludge outlet 38B are coaxial with each other.
- the input 38 A will for example be horizontal, while the outputs 38B, 38C, will for example be vertical.
- an acoustic probe 44 (FIGS. 3 and 4) is installed against the outer wall 42B of the conical body with respect to the inlet 38 A. This acoustic probe 44 occupies the same transverse plane as the entry 38A.
- This control box 46 is connected to this probe 44 by an electrical wire 48.
- This control box 46 may include a small microprocessor 50, which can control an alarm tone (not shown) when certain predetermined acoustic parameters are reached.
- the acoustic probe 44 may consist of a microphone of about 0.6 cm, for example the MFS 100 model of the American company GREYLINE INSTRUMENTS, inc. (Massena, New York). This model MFS 100 is effective on a fluid pipe with a minimum diameter of 6.5 millimeters.
- a switch in this microphone 44 will respond to noise radiated in the hydrocyclone 38 by the fluid flow, when this noise will exceed an adjustable preset level, detect it, amplify it, and then control a control relay.
- This microphone will be installed on the outer wall 42B of the hydrocyclone, with a simple greenhouse; there will be no direct contact with the circulating fluid, no obstruction with it. There is no hole to be drilled in the wall of the hydrocyclone 38.
- This microphone 44 is however modified to be sensitive to the extreme low frequencies, namely, below 500 Hz.
- This microphone 44 may be applied to the outer wall 42B of the feed flute 45 of the hydrocyclone, and in particular in the region of the vortex 43 as illustrated in FIGS. 3 and 4, via a flexible elastomeric adapter, for example made of neoprene, in order to establish close contact with the different fluid flow zones of the hydrocyclone to be monitored, while minimizing the contribution of the background noise (such as pumps, stirrers, compressors, and the like) at this microphone.
- the microprocessor 50 may, for example, be provided with either 16-bit two-channel analysis software per via a programmable preamplifier; a second microprocessor (not shown) could be used in parallel with the first, and would then be connected to a second data acquisition system channel via a sound level meter.
- the co-inventors have unexpectedly detected large variations in the amplitude of the sound levels in the third octaves of frequencies present in the range between 25 and 500 Hertz, and in particular in the third octave around 25 Hz or 200 Hz where the system appeared to resonate, especially at the level of the vortex 43 or overflow 38C of the hydrocyclone 38.
- Such a situation allows the detection of clogging of this hydrocyclone 38 even before it starts the evacuation of the sand S to the overflow 38C, along with the mud.
- the hydrocyclone 38 may be coated with elastomer gaskets, for example neoprene or polyurethane.
- the present acoustic detection system for changes in fluid flow parameters is not limited to industrial water treatment with hydrocyclone, but could extend to other similar domains, including a component fluid.
- we talk about fine sand we do not exclude any granular material not soluble in the liquid of the circulatory fluid.
- sludge it may mean all kinds of natural debris or not, macro or microparticulate, linked together more or less loose as a deformable set like a paste or the like.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Physical Water Treatments (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CA2002/000233 WO2003070377A1 (fr) | 2002-02-25 | 2002-02-25 | Détecteur acoustique d'obstruction dans un dispositif d'écoulement de fluide par vortex |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1478467A1 true EP1478467A1 (fr) | 2004-11-24 |
Family
ID=27739988
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02702192A Withdrawn EP1478467A1 (fr) | 2002-02-25 | 2002-02-25 | Detecteur acoustique d'obstruction dans un dispositif d'ecoulement de fluide par vortex |
Country Status (6)
Country | Link |
---|---|
US (1) | US20050173354A1 (fr) |
EP (1) | EP1478467A1 (fr) |
AU (1) | AU2002235688A1 (fr) |
CA (1) | CA2473046A1 (fr) |
MX (1) | MXPA04008202A (fr) |
WO (1) | WO2003070377A1 (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
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CA2503275A1 (fr) * | 2005-04-07 | 2006-10-07 | Advanced Flow Technologies Inc. | Systeme, methode et dispositif pour mesure acoustique d'ecoulement des fluides |
FR2904621B1 (fr) | 2006-08-01 | 2011-04-01 | Otv Sa | Procede de traitement d'eau par flocation-decantation lestee comprenant une mesure en continu du lest et installation correspondante |
US20100213123A1 (en) | 2007-01-09 | 2010-08-26 | Marston Peter G | Ballasted sequencing batch reactor system and method for treating wastewater |
US8470172B2 (en) | 2007-01-09 | 2013-06-25 | Siemens Industry, Inc. | System for enhancing a wastewater treatment process |
US20110036771A1 (en) | 2007-01-09 | 2011-02-17 | Steven Woodard | Ballasted anaerobic system and method for treating wastewater |
AU2008205247B2 (en) | 2007-01-09 | 2010-07-01 | Evoqua Water Technologies Llc | A system and method for removing dissolved contaminants, particulate contaminants, and oil contaminants from industrial waste water |
WO2011019823A1 (fr) | 2009-08-11 | 2011-02-17 | Cidra Corporate Services Inc. | Surveillance de la performance d'hydrocyclones individuels à l'aide d'une mesure d'un écoulement de boue basée sur sonar |
FR2984765B1 (fr) * | 2011-12-22 | 2014-02-28 | Iteca Socadei Sas | Dispositif de detection des risques de blocage d'un cyclone dans la fabrication du ciment |
CN104395246A (zh) | 2012-06-11 | 2015-03-04 | 伊沃夸水处理技术有限责任公司 | 使用固定膜工艺和压载沉降的处理 |
CA2881703C (fr) | 2012-09-26 | 2020-12-22 | Evoqua Water Technologies Llc | Systeme permettant de mesurer la concentration de ballast magnetique dans une boue |
JP6265822B2 (ja) * | 2013-05-07 | 2018-01-24 | 新日鐵住金株式会社 | 凝集沈殿装置及び凝集沈殿方法 |
AU2016211428B2 (en) * | 2015-01-28 | 2021-05-20 | Cidra Corporate Services Inc. | Detection of cyclone wear or damage using individual cyclone overflow measurement |
US10690530B2 (en) * | 2016-11-29 | 2020-06-23 | Texas Instruments Incorporated | Hydraulic system for ultrasonic flow measurement using direct acoustic path approach |
MA52026A (fr) * | 2018-03-15 | 2021-01-20 | Vulco Sa | Système et procédé de surveillance d'hydrocyclone |
CA3103033A1 (fr) * | 2018-07-23 | 2020-01-30 | Veolia Water Solutions & Technologies Support | Appareil d'elimination de grains par tourbillon avec generateur de foucault |
US11475717B2 (en) | 2019-01-11 | 2022-10-18 | Cnh Industrial America Llc | System and method for detecting worn or damaged components of an agricultural machine based on acoustic data |
US11319247B2 (en) * | 2019-10-21 | 2022-05-03 | Rdp Technologies, Inc. | Fine grit classifier |
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US3724484A (en) * | 1971-07-13 | 1973-04-03 | Us Air Force | Particle density control system for colloid core nuclear reactor |
SE8006732L (sv) * | 1980-09-26 | 1982-03-27 | Alfa Laval Ab | Anordning for att overvaka separerat sediment, som kastas ut genom munstycken hos en centrifugalseparator |
US4357603A (en) * | 1980-11-24 | 1982-11-02 | The United States Of America As Represented By The Depart Of Energy | Method and apparatus for acoustically monitoring the flow of suspended solid particulate matter |
SU1152663A1 (ru) * | 1983-05-03 | 1985-04-30 | Киргизский сельскохозяйственный институт им.К.И.Скрябина | Способ управлени работой гидроциклона |
SU1165473A1 (ru) * | 1983-11-09 | 1985-07-07 | Научно-Производственное Объединение "Техэнергохимпром" | Способ автоматического управлени аэродинамическим режимом циклонного аппарата |
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SU1443973A2 (ru) * | 1987-01-23 | 1988-12-15 | Научно-Производственное Объединение "Техэнергохимпром" | Способ определени степени обесфторивани кормовых фосфатов в теплотехническом аппарате |
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US5257530A (en) * | 1991-11-05 | 1993-11-02 | Atlantic Richfield Company | Acoustic sand detector for fluid flowstreams |
DE4327291C2 (de) * | 1993-08-13 | 1997-07-31 | Krauss Maffei Ag | Verfahren und Vorrichtung zur Bestimmung von Meßgrößen einer Zentrifuge |
US5635632A (en) * | 1994-04-26 | 1997-06-03 | Cytec Technology Corp. | Settling process analysis device and method |
FR2719234B1 (fr) * | 1994-05-02 | 1999-08-13 | Omnium Traitement Valorisa | Procédé et installation de traitement d'un écoulement brut par décantation simple après lestage au sable fin. |
US5840195A (en) * | 1995-05-01 | 1998-11-24 | Omnium De Traitement Et De Valorisation | Method and installation for treating an untreated flow by simple sedimentation after ballasting with fine sand |
DE69618989T2 (de) * | 1995-12-01 | 2002-09-26 | Baker Hughes Inc | Verfahren und vorrichtung zum regeln und überwachen einer durchlaufzentrifuge |
AUPQ152499A0 (en) * | 1999-07-09 | 1999-08-05 | Commonwealth Scientific And Industrial Research Organisation | A system for monitoring acoustic emissions from a moving machine |
-
2002
- 2002-02-25 MX MXPA04008202A patent/MXPA04008202A/es unknown
- 2002-02-25 EP EP02702192A patent/EP1478467A1/fr not_active Withdrawn
- 2002-02-25 CA CA002473046A patent/CA2473046A1/fr not_active Abandoned
- 2002-02-25 AU AU2002235688A patent/AU2002235688A1/en not_active Abandoned
- 2002-02-25 US US10/503,903 patent/US20050173354A1/en not_active Abandoned
- 2002-02-25 WO PCT/CA2002/000233 patent/WO2003070377A1/fr not_active Application Discontinuation
Non-Patent Citations (1)
Title |
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See references of WO03070377A1 * |
Also Published As
Publication number | Publication date |
---|---|
MXPA04008202A (es) | 2004-11-26 |
WO2003070377A1 (fr) | 2003-08-28 |
CA2473046A1 (fr) | 2003-08-28 |
US20050173354A1 (en) | 2005-08-11 |
AU2002235688A1 (en) | 2003-09-09 |
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