DE102008007332A1 - Intensimeter for use by professional user in industrial region, has sensor element measuring distribution of intensity of water jet, where compressive force exerted by jet on sensor element is converted into electrical or mechanical signal - Google Patents

Intensimeter for use by professional user in industrial region, has sensor element measuring distribution of intensity of water jet, where compressive force exerted by jet on sensor element is converted into electrical or mechanical signal Download PDF

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Publication number
DE102008007332A1
DE102008007332A1 DE102008007332A DE102008007332A DE102008007332A1 DE 102008007332 A1 DE102008007332 A1 DE 102008007332A1 DE 102008007332 A DE102008007332 A DE 102008007332A DE 102008007332 A DE102008007332 A DE 102008007332A DE 102008007332 A1 DE102008007332 A1 DE 102008007332A1
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Germany
Prior art keywords
sensor element
jet
water jet
intensity
converted
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DE102008007332A
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German (de)
Inventor
Michael Dipl.-Ing. Trübenbach
Frank Dipl.-Ing. Severin
Christian Prof. Dr. Ing. Schindler
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26FPERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00Severing by means other than cutting; Apparatus therefor
    • B26F3/004Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02Cleaning by the force of jets or sprays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

The intensimeter has a sensor element (1) measuring distribution of intensity of a water jet, where the measurement results are independent of a flat section nozzle and a material, and compressive force exerted by the jet on the element is converted into an electrical or mechanical signal. Jet distribution of intensity of nozzles lies within the range of intensity of high-pressure water jet when erosion quality is analyzed. A conical cover (6) is supported on a cylindrical housing (7), where a head of the cover has a bore hole through which a plunger (4) comes into contact with the water jet.

Description

Die Hochdruckwasserstrahltechnik ist ein weit verbreitetes Reinigungs- und Schneidverfahren in vielen Industriebereichen. Durch entsprechend hohen Druck und Variation der Durchflussmengen kann eine mehr oder weniger starke abrasive Wirkung erzielt werden. Dabei werden verschiedene Düsen wie z. B. Flachstrahl-, Rundstrahl- und Rotationsdüsen eingesetzt. Die Strahlintensitätsverteilung einer Düse gibt die Energie an, die der Wasserstrahl auf die Strahlfläche in einer bestimmten Zeit ausübt. Die Intensitätsverteilung ist besonders dann von Bedeutung, wenn die Abtragsqualität analysiert wird. Darunter versteht man die Oberflächengüte die durch den Abtragsvorgang erreicht wird. Je gleichmäßiger die Strahlintensitätsverteilung einer Düse ist, desto besser lässt sie sich in automatische Prozesse einbinden. Desweiteren lassen sich bessere Aussagen über das zu erwartende Abtragsbild treffen. Das Abtragsbild ist die charakteristische Geometrie, die die Materialoberfläche nach der Beanspruchung durch Hochdruckwasserstrahlen aufweist. Durch die Erfindung kann die Strahlintensität von Hochdruckwasserstrahlen gemessen werden. Die Apparatur ermöglicht die Erstellung eines Strahlintensitätsprofils unabhängig von der verwendeten Düsenart.The High-pressure water jet technology is a widely used cleaning and cutting processes in many industries. By accordingly high pressure and variation of flow rates can be one more or more less strong abrasive effect can be achieved. There are different Nozzles such. B. flat jet, round jet and rotary nozzles used. The beam intensity distribution gives a nozzle the energy that the water jet has on the jet surface in one time. The intensity distribution is particularly important if the Abtragsqualität analyzed becomes. By this one understands the surface quality by the removal process is reached. The more uniform the Beam intensity distribution a nozzle is the better they engage in automatic processes. Furthermore let get better statements about to meet the expected Abtragsbild. The removal image is the characteristic Geometry, the material surface after the stress by high pressure water jets. By the invention can the beam intensity be measured by high pressure water jets. The apparatus allows the Creation of a beam intensity profile independently of the type of nozzle used.

Die Optimierung der Abtragsergebnisse wurde bisher vielfach durch die Anordnung oder die Kombination von verschiedenen Düsen realisiert und durch Versuche an verschiedenen Materialien untersucht. Die genaueren Mechanismen, beziehungsweise Kräfteverteilungen innerhalb der Auftrefffläche des Strahls, die beim Abtrag auftreten, sind jedoch wenig bekannt.The Optimization of the removal results has often been achieved by the Arrangement or combination of different nozzles realized and tested by experiments on various materials. The more precise mechanisms, or distributions of forces within the incident However, the beam that occur during erosion are little known.

Nach dem bisherigen Stand der Technik wird zur Beurteilung der Intensitätsverteilung das Abtragsbild herangezogen. Dieses Abtragsbild ist immer abhängig von den Materialeigenschaften des jeweiligen Stoffes, und es lässt sich keine allgemein gültige Aussage treffen. Versuche haben ergeben, dass Flachstrahldüsen gegenüber Rotationsdüsen Lacke besonders effektiv von Blechen entfernen, dagegen in Sandstein die gegenteilige Abtragsleistung erreicht wird. Durch die Erfindung ist es möglich Hochdruckwasserstrahlen mit einer möglichst feinen Auflösung zu vermessen, um aussagekräftige Profile der Flächenbeanspruchung zu erhalten. Dabei wird entweder der Wasserstrahl über der Erfindung verfahren, oder die Erfindung unter dem Wasserstrahl bewegt, um so den Strahl komplett abzutasten.To The prior art is used to assess the intensity distribution used the Abtragsbild. This removal image is always dependent on the material properties of each substance, and it can be no general statement to meet. Experiments have shown that flat-jet nozzles compared to rotating nozzles coatings especially effectively remove from sheet metal, whereas in sandstone the opposite Abtragsleistung is achieved. By the invention it is possible high pressure water jets with one as possible fine resolution too presumptuous to meaningful Profiles of the surface stress to obtain. It is either the water jet over the Invention method, or the invention moves under the water jet to to scan the beam completely.

Das Messprinzip der Erfindung (siehe 1) beruht auf der Druckkraftmessung, indem die vom Wasserstrahl auf ein Material ausgeübte Druckkraft in ein elektrisches oder mechanisches Signal umgewandelt wird. Die Kraftmessung erfolgt durch die vom Wasserstrahl hervorgerufene Deformation des Sensorelements 1. Der Sensor kann jedoch nicht direkt im Wirkbereich des Wasserstrahls appliziert werden, da dieser den Sensor zerstören würde. Die Deformation erfolgt durch die Relativbewegung des Kraftüberträgers 2 und dem Boden 3 zueinander, zwischen denen das Sensorelement eingespannt ist. Der Boden 3 ist das Fundament der Messapparatur. Er übernimmt die Anbindung an eine Bewegungseinheit und die Auflagefläche für den Sensor. Um das Sensorelement gegenüber dem Wasserstrahl unempfindlich zu machen, wird es so in der Apparatur appliziert, dass der Wasserstrahl am Sensor vorbeiströmt. Für die Krafteinleitung sorgt ein zylindrischer Taststift 4 aus hochfestem Material mit einem kleinen Durchmesser, der in der Wirkzone des Wasserstrahls appliziert wird. Die Krafteinleitung auf den Sensor erfolgt über ein Übertragungselement, dem so genannten Stifthalter 5. Der Kraftüberträger 2 hat die Aufgabe den Kontakt des anströmenden Wassers mit dem Sensor zu verhindern und eine kraftschlüssige Verbindung zwischen Stifthalter 5 und Sensor 1 zu ermöglichen, damit der Kraftfluss vom Taststift 4 zum Sensor 1 nicht unterbrochen wird. Die feine Auflösung der Messergebnisse erfordert eine Abschirmung des Sensors 1 und des Stifthalters 5. Diese erfolgt in Form eines kegelförmigen Deckels 6. Der Deckel 6 stützt sich auf ein zylinderförmiges Gehäuse 7 ab. Der Deckel 6 hat in seiner Spitze eine Bohrung, durch die der Taststift 4 in Kontakt mit dem Wasserstrahl kommt.The measuring principle of the invention (see 1 ) is based on the pressure force measurement, in that the pressure force exerted by the water jet on a material is converted into an electrical or mechanical signal. The force measurement is effected by the deformation of the sensor element caused by the water jet 1 , However, the sensor can not be applied directly in the effective range of the water jet, as this would destroy the sensor. The deformation takes place by the relative movement of the force transmitter 2 and the floor 3 to each other, between which the sensor element is clamped. The floor 3 is the foundation of the measuring apparatus. It handles the connection to a movement unit and the support surface for the sensor. In order to make the sensor element insensitive to the water jet, it is applied in the apparatus so that the water jet flows past the sensor. For the introduction of force provides a cylindrical stylus 4 Made of high-strength material with a small diameter, which is applied in the effective zone of the water jet. The force is applied to the sensor via a transmission element, the so-called pen holder 5 , The power transmission 2 has the task to prevent the contact of the incoming water with the sensor and a non-positive connection between pen holder 5 and sensor 1 to allow for the flow of force from the stylus 4 to the sensor 1 is not interrupted. The fine resolution of the measurement results requires a shielding of the sensor 1 and the pen-keeper 5 , This takes place in the form of a conical lid 6 , The lid 6 rests on a cylindrical housing 7 from. The lid 6 has a hole in its tip through which the stylus 4 comes in contact with the water jet.

Durch die Erfindung kann erstmals die Intensitätsverteilung eines Wasserstrahls gemessen werden. Diese Messergebnisse sind unabhängig von der verwendeten Düse und dem Material. Aufgrund dieser Materialunabhängigkeit der Messergebnisse lassen sich allgemein gültige Aussagen über die Intensitätsverteilung des Hochdruckwasserstrahls treffen. Diese Erkenntnisse können z. B. für die Optimierung von Düsengeometrien verwendet werden. Weiterhin kann die Abtragsleistung und das Abtragsprofil eines Wasserstrahls durch die genauen Kenntnisse der Intensitätsverteilung optimiert werden. Für professionelle Anwender ergibt sich durch die Optimierung der Abtragsleistung und des Abtragsprofils eine Zeit- und Kostenersparnis.By The invention can for the first time the intensity distribution of a water jet be measured. These results are independent of the nozzle used and the Material. Due to this material independence of the measurement results can be universally valid Statements about the intensity distribution of the high-pressure water jet. These findings can z. For example the optimization of nozzle geometries be used. Furthermore, the removal rate and the removal profile a water jet through the exact knowledge of the intensity distribution be optimized. For Professional users result from the optimization of the removal rate and the Abtragsprofils a time and cost savings.

Claims (4)

Intensiometer für Wasserstrahlen dadurch gekennzeichnet, dass die Intensitätsverteilung eines Wasserstrahls gemessen werden kann.Intensiometer for water jets, characterized in that the intensity distribution of a water jet can be measured. Intensiometer nach Patentanspruch 1, dadurch gekennzeichnet, dass die Kraftmessung durch die vom Wasserstrahl hervorgerufene Deformation des Sensorelements erfolgt.Intensiometer according to claim 1, characterized that the force measurement caused by the water jet Deformation of the sensor element takes place. Intensiometer nach Patentanspruch 1 und 2, dadurch gekennzeichnet, dass die vom Wasserstrahl auf das Sensorelements ausgeübte Druckkraft in ein elektrisches oder mechanisches Signal umgewandelt wird.Intensiometer according to claim 1 and 2, characterized in that the water jet is applied to the sensor element pressure force is converted into an electrical or mechanical signal. Intensiometer nach Patentanspruch 1, 2, und 3 dadurch gekennzeichnet, dass die Messergebnisse unabhängig von der verwendeten Düse und dem Material sind.Intensiometer according to claim 1, 2, and 3 characterized in that the measurement results are independent of the nozzle used and the Material are.
DE102008007332A 2008-01-31 2008-01-31 Intensimeter for use by professional user in industrial region, has sensor element measuring distribution of intensity of water jet, where compressive force exerted by jet on sensor element is converted into electrical or mechanical signal Withdrawn DE102008007332A1 (en)

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Application Number Priority Date Filing Date Title
DE102008007332A DE102008007332A1 (en) 2008-01-31 2008-01-31 Intensimeter for use by professional user in industrial region, has sensor element measuring distribution of intensity of water jet, where compressive force exerted by jet on sensor element is converted into electrical or mechanical signal

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DE102008007332A DE102008007332A1 (en) 2008-01-31 2008-01-31 Intensimeter for use by professional user in industrial region, has sensor element measuring distribution of intensity of water jet, where compressive force exerted by jet on sensor element is converted into electrical or mechanical signal

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011008002A1 (en) 2011-01-04 2012-07-05 Jürgen Richter Device for measuring nozzle beam of media blasting tool during spraying of e.g. liquid medium, has impact element arranged in housing, where media blasting tool is partially inserted into openings that are formed in housing
EP3239405A4 (en) * 2014-12-24 2018-07-11 Chemical Grouting Co.Ltd. Determining device and determining method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011008002A1 (en) 2011-01-04 2012-07-05 Jürgen Richter Device for measuring nozzle beam of media blasting tool during spraying of e.g. liquid medium, has impact element arranged in housing, where media blasting tool is partially inserted into openings that are formed in housing
DE102011008002B4 (en) * 2011-01-04 2014-01-16 Jürgen Richter Jet measuring device
EP3239405A4 (en) * 2014-12-24 2018-07-11 Chemical Grouting Co.Ltd. Determining device and determining method
US10261004B2 (en) 2014-12-24 2019-04-16 Chemical Grouting Co., Ltd. Determining device and determining method

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R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee

Effective date: 20130801