DE102008060095B3 - Field device e.g. pressure transducer, for e.g. process instrumentation in technical process system, has base rings covering flange pressing side such that ends of half rings are provided between head or nut of fastening screws and side - Google Patents
Field device e.g. pressure transducer, for e.g. process instrumentation in technical process system, has base rings covering flange pressing side such that ends of half rings are provided between head or nut of fastening screws and side Download PDFInfo
- Publication number
- DE102008060095B3 DE102008060095B3 DE200810060095 DE102008060095A DE102008060095B3 DE 102008060095 B3 DE102008060095 B3 DE 102008060095B3 DE 200810060095 DE200810060095 DE 200810060095 DE 102008060095 A DE102008060095 A DE 102008060095A DE 102008060095 B3 DE102008060095 B3 DE 102008060095B3
- Authority
- DE
- Germany
- Prior art keywords
- flange
- rings
- field device
- fastening screws
- nut
- 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.)
- Expired - Fee Related
Links
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L41/00—Branching pipes; Joining pipes to walls
- F16L41/008—Branching pipes; Joining pipes to walls for connecting a measuring instrument
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/006—Attachments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L47/00—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics
- F16L47/20—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics
- F16L47/24—Connecting arrangements or other fittings specially adapted to be made of plastics or to be used with pipes made of plastics based principally on specific properties of plastics for joints between metal and plastics pipes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
- G01F15/185—Connecting means, e.g. bypass conduits
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/0007—Fluidic connecting means
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Fluid Mechanics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Die Erfindung betrifft ein Feldgerät zur Prozessinstrumentierung, das mit zumindest einem Prozessanschluss an einen Prozess anschließbar ist, wobei zumindest ein Flansch zur Befestigung an der Anschlussstelle vorgesehen ist, gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to a field device for process instrumentation with at least one process connection connectable to a process is, wherein at least one flange for attachment to the junction is provided, according to the preamble of claim 1.
In prozesstechnischen Anlagen werden zur Steuerung von Prozessen vielfältige Feldgeräte für die Prozessinstrumentierung eingesetzt. Beispielsweise dienen Messumformer, die auch als Sensoren bezeichnet werden, zur Erfassung von Prozessvariablen, wie beispielsweise Temperatur, Druck, Durchflussmenge, Füllstand oder Dichte eines Mediums. Durch Stellglieder, die häufig als Aktuatoren bezeichnet werden, kann der Prozessablauf in Abhängigkeit von erfassten Prozessvariablen entsprechend einer beispielsweise von einer Leitstation vorgegebenen Strategie beeinflusst werden. Als Beispiele für Stellglieder seien ein Regelventil, eine Heizung oder eine Pumpe genannt.In In process engineering plants, a variety of field devices for process instrumentation are used to control processes used. For example, transmitters, also referred to as sensors, are used be used to capture process variables, such as temperature, Pressure, flow rate, level or density of a medium. By actuators, often as Actuators can be called, the process flow depending on recorded process variables according to one example of a control station predetermined strategy are influenced. When examples for Actuators are a control valve, a heater or a pump called.
Aus
der
Weiterhin sind Feldgeräte bekannt, zum Beispiel Messumformer für Druck, Füllstand oder Temperatur, bei welchen lediglich ein Prozessanschluss mit Flansch vorhanden ist, beispielsweise zum Anbau an eine Wand einer Rohrleitung oder eines Behälters. Auch in diesem Fall ist üblicherweise der Flansch fest angebracht.Farther are field devices known, for example, transmitter for pressure, level or temperature at which only has a process connection with flange, for example, for attachment to a wall of a pipeline or a Container. Also in this case is common the flange is firmly attached.
Bei Verwendung eines Kunststoffmaterials als Flanschwerkstoff kann es vorkommen, dass sich der Flansch im Bereich der Befestigungsschrauben, mit welchen der Flansch des Feldgeräts mit einem entsprechenden Gegenstück an der Anschlussstelle verschraubt wird, stark verformt. Im Extremfall kann dies zu Dichtigkeitsproblemen an der Anschlussstelle oder zu einem Verlust der Stabilität der Verbindung führen.at Use of a plastic material as a flange material can happen that the flange in the area of the fastening screws, with which the flange of the field device with a corresponding counterpart screwed at the junction, severely deformed. In extreme cases This can lead to leakage problems at the junction or too a loss of stability lead the connection.
Aus
der
Der Erfindung liegt die Aufgabe zugrunde, ein Feldgerät zur Prozessinstrumentierung zu schaffen, das sich durch eine gleichmäßige Verteilung der Flanschandruckkraft selbst bei vergleichsweise weichem Flanschwerkstoff auszeichnet.Of the Invention is based on the object, a field device for process instrumentation to create that by an even distribution of Flanschandruckkraft even with comparatively soft flange material.
Zur Lösung dieser Aufgabe weist das neue Feldgerät der eingangs genannten Art die im kennzeichnenden Teil des Anspruchs 1 angegebenen Merkmale auf. Vorteilhafte Weiterbildungen sind in den abhängigen Ansprüchen beschrieben.to solution this task has the new field device of the type mentioned the features specified in the characterizing part of claim 1 on. Advantageous developments are described in the dependent claims.
Die Erfindung hat den Vorteil, dass sich die von den Befestigungsschrauben über den Unterlagring auf den Flansch eingeleiteten Andruckkräfte nahezu gleichmäßig auf die gesamte Flanschrückseite verteilen, ohne den Flansch punktuell übermäßig zu belasten oder den Flansch in unzulässiger Weise zu verformen. Aufgrund der Teilung des Unterlagrings in zwei Halbringe kann dieser selbst dann nachträglich auf die Flanschrückseite aufgelegt werden, wenn ein geschlossener Ring aufgrund der Form des Feldgeräts wegen eines zu geringen freien Innendurchmessers nicht über das Messrohr geschoben werden könnte. Die Halbringe können nämlich von der Seite her an den Flansch angebracht werden.The Invention has the advantage that the of the mounting screws on the Pad ring on the flange introduced pressure forces almost evenly distribute the entire flange back, without overloading the flange selectively or the flange in impermissible Way to deform. Due to the division of the lower bearing in two Half-rings can this even later on the flange backside be hung up when a closed ring due to the shape of the field device because of a too small free inner diameter not over the Measuring tube could be pushed. The half-rings can namely be attached to the flange from the side.
Eine alternative Ausführungsform der Halbringe, bei welcher die sich an den Stoßstellen einander gegenüberliegenden Enden der Halbringe im montierten Zustand mittig zwischen zwei Befestigungsschrauben liegen, hätte den Nachteil, dass sich die freien Enden der Halbringe von der Flanschrückseite wegbiegen und somit Kräfte in diesen Bereich schlechter übertragen könnten. Dies würde zu einer wesentlich ungleichmäßigeren Verteilung der Flanschandruckkräfte führen.A alternative embodiment the half-rings, in which the opposite at the joints Ends of the half-rings in the mounted state in the middle between two fixing screws lie, would have the disadvantage that the free ends of the half-rings from the flange back bend away and thus forces transferred to this area worse could. This would be too a much more uneven Distribution of flange pressure forces to lead.
Dieser Effekt wird in vorteilhafter Weise dadurch vermieden, dass sich die an den Stoßstellen einander gegenüberliegenden Enden der Halbringe unter einem Kopf oder einer Mutter einer Befestigungsschraube befinden und durch diese auf die Flanschrückseite gedrückt werden. Das neue Feldgerät zur Prozessinstrumentierung zeichnet sich somit durch einen Prozessanschluss mit guter Dichtwirkung und hoher Stabilität aus. Der aus zwei Halbringen bestehende Unterlagring ist nachträglich in einfacher Weise montierbar und erfordert keinerlei Änderung an der Form eines Kunststoffflanschs.This Effect is avoided in an advantageous manner that itself those at the joints one another opposite Ends of the half-rings under a head or a nut of a fastening screw located and pushed by this on the back of the flange. The new field device for process instrumentation is thus characterized by a process connection with good sealing effect and high stability. The two half rings existing pad ring is subsequently mounted in a simple manner and does not require any change on the shape of a plastic flange.
Eine besonders vorteilhafte Ausgestaltung der Erfindung wird darin gesehen, dass im montierten Zustand auf die Flanschrückseite zwei Unterlagringe aufgelegt sind, die um 90° um die Flanschachse gegeneinander gedreht sind. Das hat den Vorteil, dass eine weitere Verbesserung der Biegesteifigkeit der Unterlagringe und damit eine gleichmäßigere Verteilung der Flanschandruckkraft erreicht werden.A particularly advantageous embodiment of the invention is seen in the fact that in the mounted state on the flange back two pad rings are placed, which are rotated by 90 ° about the flange axis against each other. This has the advantage that a further improvement in the flexural rigidity of the pads and thus a more even distribution of Flanschandruckkraft can be achieved.
Als Kunststoffmaterial kann Polyvinylidenfluorid (PVDF) als Flanschwerkstoff eingesetzt werden. Diese Kunststoffart findet vorteilhaft Verwendung in der chemischen Prozessindustrie und der Wasserversorgung und hat weiterhin den Vorteil, dass sie für eine Sterilisierung mittels Heißwasser, Dampf, Chemikalien oder Ozon geeignet ist. PVDF zeichnet sich zudem durch hohe chemische Beständigkeit aus.When Plastic material can be polyvinylidene fluoride (PVDF) as a flange material be used. This type of plastic finds advantageous use in the chemical process industry and water supply and has the further advantage of being used for sterilization by means of Hot water, Steam, chemicals or ozone is suitable. PVDF also stands out by high chemical resistance out.
Anhand der Zeichnungen, in denen ein Ausführungsbeispiel der Erfindung dargestellt ist, werden im Folgenden die Erfindung sowie Ausgestaltungen und Vorteile näher erläutert.Based of the drawings, in which an embodiment of the invention are shown below, the invention and embodiments and Advantages closer explained.
Es zeigen:It demonstrate:
In den Zeichnungen sind gleiche Teile mit gleichen Bezugszeichen versehen.In the drawings are the same parts with the same reference numerals.
In
In
der Draufsicht gemäß
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810060095 DE102008060095B3 (en) | 2008-12-02 | 2008-12-02 | Field device e.g. pressure transducer, for e.g. process instrumentation in technical process system, has base rings covering flange pressing side such that ends of half rings are provided between head or nut of fastening screws and side |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200810060095 DE102008060095B3 (en) | 2008-12-02 | 2008-12-02 | Field device e.g. pressure transducer, for e.g. process instrumentation in technical process system, has base rings covering flange pressing side such that ends of half rings are provided between head or nut of fastening screws and side |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102008060095B3 true DE102008060095B3 (en) | 2010-06-10 |
Family
ID=42145878
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200810060095 Expired - Fee Related DE102008060095B3 (en) | 2008-12-02 | 2008-12-02 | Field device e.g. pressure transducer, for e.g. process instrumentation in technical process system, has base rings covering flange pressing side such that ends of half rings are provided between head or nut of fastening screws and side |
Country Status (1)
Country | Link |
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DE (1) | DE102008060095B3 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0101753A1 (en) * | 1982-08-26 | 1984-03-07 | HERMANN BERSTORFF Maschinenbau GmbH | Connection of cylinder and flange for screw extruder |
US5314215A (en) * | 1991-07-18 | 1994-05-24 | Karl Weinhold | Flange ring |
US6276729B1 (en) * | 1998-03-06 | 2001-08-21 | Buchi Labortechnik Ag | Connection element for connecting neighboring connection sections on tubes and/or container openings, in particular on laboratory apparatus |
US7082840B2 (en) * | 2003-11-03 | 2006-08-01 | Rosemount Inc. | Flanged vortex flowmeter with unitary tapered expanders |
-
2008
- 2008-12-02 DE DE200810060095 patent/DE102008060095B3/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0101753A1 (en) * | 1982-08-26 | 1984-03-07 | HERMANN BERSTORFF Maschinenbau GmbH | Connection of cylinder and flange for screw extruder |
US5314215A (en) * | 1991-07-18 | 1994-05-24 | Karl Weinhold | Flange ring |
US6276729B1 (en) * | 1998-03-06 | 2001-08-21 | Buchi Labortechnik Ag | Connection element for connecting neighboring connection sections on tubes and/or container openings, in particular on laboratory apparatus |
US7082840B2 (en) * | 2003-11-03 | 2006-08-01 | Rosemount Inc. | Flanged vortex flowmeter with unitary tapered expanders |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |