DE4026460A1 - Monitoring fluid stream from aperture esp. of hydro- and aero-cyclones - using solid body noise detector near outlet nozzle and evaluation electronics - Google Patents

Monitoring fluid stream from aperture esp. of hydro- and aero-cyclones - using solid body noise detector near outlet nozzle and evaluation electronics

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Publication number
DE4026460A1
DE4026460A1 DE4026460A DE4026460A DE4026460A1 DE 4026460 A1 DE4026460 A1 DE 4026460A1 DE 4026460 A DE4026460 A DE 4026460A DE 4026460 A DE4026460 A DE 4026460A DE 4026460 A1 DE4026460 A1 DE 4026460A1
Authority
DE
Germany
Prior art keywords
flow
noise
hydro
aperture
cyclones
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.)
Granted
Application number
DE4026460A
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German (de)
Other versions
DE4026460C2 (en
Inventor
Jan Leinemann
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Individual
Original Assignee
Individual
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Publication date
Application filed by Individual filed Critical Individual
Priority to DE4026460A priority Critical patent/DE4026460A1/en
Publication of DE4026460A1 publication Critical patent/DE4026460A1/en
Application granted granted Critical
Publication of DE4026460C2 publication Critical patent/DE4026460C2/de
Granted legal-status Critical Current

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Classifications

    • 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
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
    • B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
    • B05B12/085—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to flow or pressure of liquid or other fluent material to be discharged

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Cyclones (AREA)

Abstract

Monitoring the flow (5) of a fluid from an aperture (2) involves continuously measuring the amplitude of the flow noise. A solid body noise detector (3) is arranged in the region of the flow outlet aperture (2). The detector feeds a signal corresp. to the fluid flow noise to evaluation electronics which monitor the noise for exceeding or falling below a desired level of intensity. USE/ADVANTAGE - Hydro- and aerocyclones used in separating particles by wt. Specific flow noise of reject material from lower outlet nozzle can be determined.

Description

Die Erfindung bezieht sich auf ein Verfahren zur Überwachung des Durchflusses eines in einem Strahl aus einer Öffnung austretenden Fluids, insbesondere zur Überwachung von Aero- und Hydrozyklonen.The invention relates to a method for monitoring the flow of one in a jet from one Opening of escaping fluid, especially for monitoring of aero and hydrocyclones.

Zyklone werden für die Leicht- und/oder Schwerteilabtrennung eingesetzt.Cyclones are used for light and / or heavy part separation used.

Zyklone bewirken je nach konstruktiver Gestaltung und Betriebsweise (Konuswinkel, Einlaufdruck, Auslaufdruck, Düsendurchmesser) entwederCyclones, depending on the design and effect Operating mode (cone angle, inlet pressure, outlet pressure, Nozzle diameter) either

  • a) bevorzugt eine Eindickung, d. h. der Feststoff wird möglichst vollständig im Unterlauf ausgetragen,a) preferably a thickening, d. H. the solid becomes carried out as completely as possible in the lower reaches,
  • b) bevorzugt eine Klassierung, d. h. Trennung nach der Korngröße,b) preferably a classification, d. H. Separation after the Grain size,
  • c) bevorzugt eine Dichte - Sortierung, d. h. eine Trennung nach der stofflichen Zusammensetzung.c) preferably density sorting, d. H. a Separation according to the material composition.

Ein Nachteil eines bekannten Hydro- oder Aerozyklons besteht darin, daß die Unterlaufdüse durch ihre konische Verjüngung auf nur 0,1 . . . 10% des Querschnittes der Zulaufleitung dazu neigt, sich mit Akzept und/oder Rejekt zuzusetzen, woraufhin der Akzept mit Rejekt verunreinigt wird und damit die Sortierwirkung aufgehoben ist.A disadvantage of a known hydro or aero cyclone is that the underflow nozzle through its conical Tapering to just 0.1. . . 10% of the cross section of the inlet pipe tends to deal with acceptance and / or reject add, whereupon the acceptance contaminated with reject and the sorting effect is canceled.

Da die mit einem Hydro- oder Aerozyklon zu klassierende Stoffmenge relativ gering und der Akzeptanteil im Rejekt relativ hoch ist, werden in der Industrie kaskadierte Parallelschaltungen von bis zu 500 Zyklonen in einer Anlage betrieben. Because the one to be classified with a hydro or aero cyclone The amount of substance is relatively low and the percentage of acceptance in the reject is relatively high, are cascaded in industry Parallel connections of up to 500 cyclones in one Plant operated.  

In derartigen Anordnungen ist es vielfach nur durch Sichtkontrolle möglich, zugesetzte Unterlaufdüsen ausfindig zu machen, um dann die betroffenen Zyklone durch Absperrung der Zulauf-, Akzept- und Rejektleitungen von der Anlage für die Instandsetzung zu trennen.In such arrangements, it is often only through Visual inspection possible, clogged underflow nozzles found to make the affected cyclones Shutting off the supply, acceptance and reject lines from separate the system for repair.

Die Erfindung betrifft eine Einrichtung zur Überwachung von Hydro- und Aerozyklonen unter Anwendung eines Körperschallaufnehmers, der das spezifische Strömungsgeräusch des aus der Unterlaufdüse austretenden Rejekts aufnimmt.The invention relates to a device for monitoring of hydro and aero cyclones using a Structure-borne noise sensor, which is the specific flow noise of the reject emerging from the underflow nozzle records.

Die Einrichtung dient, wie der nachfolgenden Tabelle 1 zu entnehmen ist, die Erkennung aller Fehlfunktionen von Zyklonen:The device serves as shown in Table 1 below is the detection of all malfunctions of Cyclones:

Tabelle 1 Table 1

Zur Erläuterung der Erfindung ist in der Figur schematisch ein Ausführungsbeispiel dargestellt und im folgenden beschrieben.The figure is schematic to explain the invention an embodiment shown and below described.

An einem Hydrozyklon (1) für die Schwerteilabtrennung aus einer Suspension mit Sortiergutzulauf (12) und Akzeptaustritt (13) ist an der Unterlaufdüse (2) im Bereich des Rejektstrahlaustritts (5) ein Körperschallaufnehmer (3) angebracht. Das von dem Wirbel (4) im Zyklon und dem aus der Unterlaufdüse austretenden Strahl erzeugte Strömungsgeräusch wird durch den Körperschallaufnehmer 3 einer Auswerteelektronik (6 . . . 10) zugeführt. Über einen Tiefpaß (6) gefiltert, von einem Verstärker (7) im Signalpegel angehoben und im Gleichrichter (8) gleichgerichtet gelangt das Signal zu einem Komparator (9), der das Strömungsgeräusch auf Grenzwertunter- beziehungsweise Überschreitung eines Sollwertes, der mittels eines Sollwertgebers (10) vorzuwählen ist, überwacht. Für Einstellarbeiten ist ein Analoginstrument (11) vorgesehen.A structure-borne noise sensor ( 3 ) is attached to the underflow nozzle ( 2 ) in the area of the reject jet outlet ( 5 ) on a hydrocyclone ( 1 ) for the separation of heavy parts from a suspension with sorting material inlet ( 12 ) and accept outlet ( 13 ). The flow noise generated by the vortex ( 4 ) in the cyclone and the jet emerging from the underflow nozzle is fed through the structure-borne noise sensor 3 to an electronic evaluation unit ( 6 ... 10 ). Filtered via a low-pass filter ( 6 ), raised in signal level by an amplifier ( 7 ) and rectified in the rectifier ( 8 ), the signal reaches a comparator ( 9 ) which detects the flow noise when the setpoint falls below or exceeds a setpoint. 10 ) is to be selected, monitored. An analog instrument ( 11 ) is provided for adjustment work.

Claims (5)

1. Verfahren zur Überwachung des Durchflusses eines in einem Strahl aus einer Öffnung austretenden Fluids, insbesondere zur Überwachung von Hydro- und Aerozyklonen, dadurch gekennzeichnet, daß aus der kontinuierlich gemessenen Größe des Strömungsgeräusches des austretenden Fluids der Durchfluß ermittelt wird.1. A method for monitoring the flow of a fluid emerging from an opening in a jet, in particular for monitoring hydro- and aerocyclones, characterized in that the flow is determined from the continuously measured size of the flow noise of the emerging fluid. 2. Einrichtung zur Durchführung des Verfahrens nach Anspruch 1, gekennzeichnet durch einen im Bereich der Austrittsöffnung (2) des Strahls (5) befindlichen Körperschallaufnehmer (3).2. A device for implementing the method according to claim 1, characterized by a contained of the beam (5) in the region of the outlet opening (2) acoustic emission sensor (3). 3. Einrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der Körperschallaufnehmer (3) das Strömungsgeräusch des austretenden Fluids einer Auswerteelektronik zuführt.3. Device according to claim 2, characterized in that the structure-borne noise sensor ( 3 ) supplies the flow noise of the emerging fluid to an electronic evaluation system. 4. Einrichtung nach Anspruch 2 und 3, dadurch gekennzeichnet, daß das Strömungsgeräusch des austretenden Fluids in Bezug auf Unter- und Überschreitung eines Intensitätssollwertes überwacht wird.4. Device according to claim 2 and 3, characterized characterized that the flow noise of the escaping fluid in relation to falling short and falling short an intensity setpoint is monitored. 5. Einrichtung zur Durchführung des Verfahrens nach Anspruch 1, gekennzeichnet durch einen im Signalweg befindlichen Tiefpaß (6) zur Herausfilterung von niederfrequenten Störgeräuschen.5. A device for performing the method according to claim 1, characterized by a low-pass filter ( 6 ) located in the signal path for filtering out low-frequency noise.
DE4026460A 1990-08-17 1990-08-17 Monitoring fluid stream from aperture esp. of hydro- and aero-cyclones - using solid body noise detector near outlet nozzle and evaluation electronics Granted DE4026460A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4026460A DE4026460A1 (en) 1990-08-17 1990-08-17 Monitoring fluid stream from aperture esp. of hydro- and aero-cyclones - using solid body noise detector near outlet nozzle and evaluation electronics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4026460A DE4026460A1 (en) 1990-08-17 1990-08-17 Monitoring fluid stream from aperture esp. of hydro- and aero-cyclones - using solid body noise detector near outlet nozzle and evaluation electronics

Publications (2)

Publication Number Publication Date
DE4026460A1 true DE4026460A1 (en) 1991-03-21
DE4026460C2 DE4026460C2 (en) 1992-09-24

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DE4026460A Granted DE4026460A1 (en) 1990-08-17 1990-08-17 Monitoring fluid stream from aperture esp. of hydro- and aero-cyclones - using solid body noise detector near outlet nozzle and evaluation electronics

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19830442A1 (en) * 1998-07-08 2000-01-13 Rossendorf Forschzent Acoustic volume determination device e.g. for level monitoring or pressure measuring
EP1161999A1 (en) * 2000-06-06 2001-12-12 AKW Apparate + Verfahren GmbH & Co. KG Device for sensing the underflow of a hydrocyclone
WO2003070377A1 (en) * 2002-02-25 2003-08-28 John Meunier Inc. Acoustic sensor for obstruction in a device circulating vortex-flow fluid
WO2007033977A1 (en) * 2005-09-23 2007-03-29 Vorwerk & Co. Interholding Gmbh Method for generating a signal for changing a filter bag and vacuum cleaner comprising a suction blower
WO2011157590A1 (en) * 2010-06-16 2011-12-22 Akw Apparate + Verfahren Gmbh Method and arrangement for scanning the underflow stream of a hydrocyclone

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936619A (en) * 1958-07-10 1960-05-17 Gulton Ind Inc Device for measuring liquid flow
US3958458A (en) * 1974-08-26 1976-05-25 Grumman Aerospace Corporation Acoustic emission flow measurement system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2936619A (en) * 1958-07-10 1960-05-17 Gulton Ind Inc Device for measuring liquid flow
US3958458A (en) * 1974-08-26 1976-05-25 Grumman Aerospace Corporation Acoustic emission flow measurement system

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DE-Buch: Lehr- und Handbuch der Abwassertechnik Band 2, Verlag Wilhelm Ernst & Sohn, Berlin, München, Düsseldorf, 1978, S. 270 *
Patents Abstracts of Japan 55-78214(A) *

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19830442A1 (en) * 1998-07-08 2000-01-13 Rossendorf Forschzent Acoustic volume determination device e.g. for level monitoring or pressure measuring
DE19830442B4 (en) * 1998-07-08 2004-04-29 Forschungszentrum Rossendorf E.V. Arrangement for acoustic volume determination
EP1161999A1 (en) * 2000-06-06 2001-12-12 AKW Apparate + Verfahren GmbH & Co. KG Device for sensing the underflow of a hydrocyclone
WO2003070377A1 (en) * 2002-02-25 2003-08-28 John Meunier Inc. Acoustic sensor for obstruction in a device circulating vortex-flow fluid
WO2007033977A1 (en) * 2005-09-23 2007-03-29 Vorwerk & Co. Interholding Gmbh Method for generating a signal for changing a filter bag and vacuum cleaner comprising a suction blower
WO2011157590A1 (en) * 2010-06-16 2011-12-22 Akw Apparate + Verfahren Gmbh Method and arrangement for scanning the underflow stream of a hydrocyclone

Also Published As

Publication number Publication date
DE4026460C2 (en) 1992-09-24

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OP8 Request for examination as to paragraph 44 patent law
8122 Nonbinding interest in granting licenses declared
D2 Grant after examination
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