DE102007062864A1 - Vibration damping casing e.g. plastic hose, for use in tubular spring of pressure manometer, has shrink tube made of polyolefin, polyvinyl fluoride, PVC or PTFE, where casing is in form of plastic hose and is slid on tubular spring - Google Patents

Vibration damping casing e.g. plastic hose, for use in tubular spring of pressure manometer, has shrink tube made of polyolefin, polyvinyl fluoride, PVC or PTFE, where casing is in form of plastic hose and is slid on tubular spring Download PDF

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Publication number
DE102007062864A1
DE102007062864A1 DE200710062864 DE102007062864A DE102007062864A1 DE 102007062864 A1 DE102007062864 A1 DE 102007062864A1 DE 200710062864 DE200710062864 DE 200710062864 DE 102007062864 A DE102007062864 A DE 102007062864A DE 102007062864 A1 DE102007062864 A1 DE 102007062864A1
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Germany
Prior art keywords
rubber
bourdon tube
tube
casing
tubular spring
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DE200710062864
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German (de)
Inventor
Achim Gruber
Christian Geubert
Ulrich Dr. Liedtke
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Carl Freudenberg KG
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Carl Freudenberg KG
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Priority to DE200710062864 priority Critical patent/DE102007062864A1/en
Publication of DE102007062864A1 publication Critical patent/DE102007062864A1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/10—Elements for damping the movement of parts

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The casing has a shrink tube made of polyolefin, polyvinyl fluoride, PVC or PTFE. The casing in the form of a plastic hose (4) is slid on a vibration damped tubular spring (2). A form-fit or force-fit connection is established between a damping layer and the tube spring using adhesive, foaming or heat-shrinking. The tubular spring is surrounded by the layer. The hose is pulled by the tubular spring.

Description

Technisches GebietTechnical area

Die Erfindung betrifft ein mechanisches Anzeigeinstrument zur Druckmessung, umfassend eine Rohrfeder, wobei die Rohrfeder von mindestens einer Schicht kraft- und formschlüssig umhüllt ist. Die Schicht hat die Aufgabe, Schwingungen, welche aus dem Umfeld des Anzeigeinstrumentes auf die Rohrfeder übertragen werden, abzuschwächen.The The invention relates to a mechanical indicating instrument for measuring pressure, comprising a tube spring, wherein the tube spring of at least one Layer is wrapped non-positively and positively. The layer has the task of vibrations, which from the environment of the indicating instrument are transferred to the Bourdon tube, mitigate.

Stand der TechnikState of the art

Aus dem Stand der Technik ist bekannt, dass die Füllung des Anzeigeraumes mit Flüssigkeiten wie z. B. Silikonöl oder Glyzerin Schwingungen, welche über die Rohrfeder auf die Anzeigenadel übertragen werden, dämpfen. Nachteil der Erfindung ist, dass der Anzeigeraum gegen das Auslaufen der Dämpfungsflüssigkeit gesichert werden muss. Weiterhin muss das Anzeigeinstrument in der Zuleitung mit einer Drossel versehen sein, wie in DT 1773458 C3 beschrieben wird, damit bei Undichtigkeit der Rohrfeder der Druck im Anzeigeraum nicht schlagartig ansteigen kann, was zum Bersten des Schauglases führen kann und Personen im Umfeld schädigen könnte.From the prior art it is known that the filling of the display space with liquids such. As silicone oil or glycerol vibrations, which are transmitted via the Bourdon tube on the indicator needle, dampen. Disadvantage of the invention is that the display room must be secured against the leakage of the damping fluid. Furthermore, the meter in the supply line must be equipped with a throttle, as in DT 1773458 C3 is described so that in case of leakage of the Bourdon tube, the pressure in the display room can not rise abruptly, which can lead to the bursting of the sight glass and could harm people in the environment.

Weiterhin ist, wie in DT 2532720 beschrieben, ein hydraulisches Dämpfungselement bekannt, welches im Anzeigeraum die auf die Anzeigenadel übertragene Schwingungen dämpft. Nachteil der Erfindung ist die sehr aufwendige Montage.Furthermore, as in DT 2532720 described, a hydraulic damping element known which dampens the transmitted to the display needle vibrations in the display room. Disadvantage of the invention is the very complex installation.

Darstellung der ErfindungPresentation of the invention

Der Erfindung liegt die Aufgabe zu Grunde, Schwingungen, welche aus dem Umfeld des Druckanzeigeinstrumentes auf die Rohrfeder und damit auf die Anzeigenadel übertragen werden, zu dämpfen. Erfindungsgemäß wird die voranstehende Aufgabe mit den Merkmalen des Patentanspruchs 1 gelöst. Danach werden die Schwingungen durch die schwingungsdämpfenden Eigenschaften des Umhüllungsmaterials der Rohrfeder wesentlich verringert.Of the Invention is based on the object, vibrations, which from the environment of the pressure gauge on the Bourdon tube and thus to be transmitted to the indicator needle to attenuate. According to the invention the above object with the features of the claim 1 solved. After that, the vibrations are damped by the vibration Characteristics of the envelope material of the Bourdon tube essential reduced.

Es ist bekannt, das Kunststoffe dämpfende Eigenschaften besitzen. Des Weiteren ist bekannt, dass Kunststoffe ihre dämpfende Wirkung umso besser entfalten können, je besser die mechanische Energie in den Kunststoff eingeleitet wird. Komplexe Formen wie z. B. Rohrfedern können nur aufwendig mit einem geeigneten Kunststoffmaterial so umhüllt werden, dass ein vollflächiger Kontakt des Kunststoffs mit der Rohrfederoberfläche hergestellt ist.It It is known that plastics have damping properties. Furthermore, it is known that plastics have their dampening effect The better the mechanical effect, the better the effect Energy is introduced into the plastic. Complex forms like z. B. bourdon tubes can only consuming a suitable Plastic material are wrapped so that a full-surface Contact of the plastic made with the tube spring surface is.

Besonders vorteilhaft werden zur Dämpfung der Rohrfeder schlauchartige Kunststoffschichten verwendet, die auf die zu dämpfende Rohrfeder aufgeschoben werden und diese ummanteln. Durch eine kraft- und formschlüssige Verbindung zwischen Kunststoff und Rohrfeder entzieht der Kunststoff der schwingenden Rohrfeder seine Schwingungsenergie.Especially Be advantageous for damping the tubular spring hose-like Plastic layers used on the to be damped Bend spring are pushed and encase this. Through a force and positive connection between plastic and Bourdon tube withdraws the plastic of the oscillating Bourdon tube vibrational energy.

Durch die Wahl der Ummantelungsdicke und durch die Wahl des Ummantelungskunststoffes kann die Dämpfungswirkung gezielt eingestellt werden.By the choice of sheathing thickness and the choice of sheathing plastic the damping effect can be adjusted specifically.

In einer bevorzugten Ausführungsform wird die kraft- und formschlüssige Verbindung zwischen Dämpfungsschicht und zu dämpfender Rohrfeder durch einbringen von Klebstoff zwischen Dämpfungsschicht und zu dämpfender Rohrfeder erzielt.In a preferred embodiment, the non-positive and positive Connection between damping layer and to be damped Bourdon tube by introducing adhesive between damping layer and achieved to be damped Bourdon tube.

In einer weiteren bevorzugten Ausführungsform wird die kraft- und formschlüssige Verbindung zwischen Dämpfungsschicht und zu dämpfender Rohrfeder durch Ausschäumen erzielt.In In another preferred embodiment, the force and positive connection between the damping layer and to be damped Bourdon tube by foaming achieved.

In einer besonders bevorzugten Ausführungsform wird die kraft- und formschlüssige Verbindung zwischen Dämpfungsschicht und zu dämpfender Rohrfeder durch thermisches Aufschrumpfen erzielt.In In a particularly preferred embodiment, the force and positive connection between the damping layer and to be damped Bourdon tube by thermal shrinking achieved.

Die Erfindung wird im folgenden anhand einer bevorzugten Ausführungsform der erfindungsgemäßen Umhüllung der Rohrfeder mit einem dämpfenden Umhüllungsmaterials anhand der beigefügten Figur näher beschrieben, wobei jedoch eine Einschränkung der Erfindung auf die beschriebene Ausführungsform nicht beabsichtigt ist.The Invention will be described below with reference to a preferred embodiment the enclosure according to the invention of the Bourdon tube with a cushioning wrapping material the attached figure, wherein however, a limitation of the invention to the described Embodiment is not intended.

1 zeigt eine Ausführungsform der erfindungsgemäßen schwingungsgedämpften Rohrfeder 2 in einem Druckmanometer 1. Die über die Rohrfeder 2 übertragenen Schwingungen auf die Anzeigenadel 3 werden durch einen Kunststoffschlauch 4, welcher über die Rohrfeder 2 gezogen und thermisch aufgeschrumpft wird, gedämpft. 1 shows an embodiment of the vibration-damped Bourdon tube according to the invention 2 in a pressure gauge 1 , The over the Bourdon tube 2 transmitted vibrations on the indicator needle 3 be through a plastic tube 4 , which over the bourdon tube 2 pulled and thermally shrunk, steamed.

ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION

Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Zitierte PatentliteraturCited patent literature

  • - DT 1773458 C3 [0002] - DT 1773458 C3 [0002]
  • - DT 2532720 [0003] - DT 2532720 [0003]

Claims (5)

Schwingungdämpfende Ummantelung einer Rohrfeder in einem Druckmanometer (x), wobei die zu dämpfende Rohrfeder (x) mit einer kraft- und formschlüssigen Kunststoffummantelung (x) versehen ist.Vibration damping jacket of a Bourdon tube in a pressure gauge (x), wherein the bourdon tube to be damped (x) with a positive and positive plastic casing (x) is provided. Schwingungdämpfende Ummantelung einer Rohrfeder (x) in einem Druckmanometer (x), nach Anspruch 1, wobei die schwingungsdämpfende Kunststoffummantelung (x) aus einem Schrumpfschlauch besteht, dadurch gekennzeichnet, dass der Schrumpfschlauch aus Polyolefin, Polyvinylidenfluorid, Polyvinylchlorid oder Polytetrafluorethylen besteht.Vibration damping jacket of a Bourdon tube (x) in a pressure gauge (x) according to claim 1, wherein the vibration-damping plastic sheath (x) consists of a heat-shrinkable tube, characterized that the shrink tube made of polyolefin, polyvinylidene fluoride, Polyvinyl chloride or polytetrafluoroethylene. Schwingungdämpfende Ummantelung einer Rohrfeder (x) in einem Druckmanometer (x), nach Anspruch 1, dadurch gekennzeichnet, dass die Kunststoffummantelung (x) in Form eines Elastomerschlauches auf die Rohrfeder (x) aufgeschoben wird und der Elastomerschlauch aus Isoprenkautschuk, Styrol-Butadien-Kautschuk, Butadien-Kautschuk, Butyl-Kautschuk, Ethylen-Propylen-Terpolymerisat (EPDM), Acrylnitril-Butadien-Kautschuk, Epichlorhydrin-Kautschuk, Chloropren-Kautschuk, chlorsulfoniertem Polyethylen, Urethan-Kautschuk, Polysulfid-Kautschuk, Silikon-Kautschuk, Fluor-Silikon-Kautschuk, Fluorkautschuk, Polyacrylat-Kautschuk, Polyurethan oder Polytetrafluorethylen (PTFE) besteht.Vibration damping jacket of a Bourdon tube (x) in a pressure gauge (x), according to claim 1, characterized that the plastic sheath (x) in the form of an elastomer hose is pushed onto the tube spring (x) and the elastomer tube of isoprene rubber, styrene butadiene rubber, butadiene rubber, butyl rubber, Ethylene-propylene terpolymer (EPDM), acrylonitrile butadiene rubber, Epichlorohydrin rubber, chloroprene rubber, chlorosulfonated Polyethylene, urethane rubber, polysulfide rubber, silicone rubber, Fluoro-silicone rubber, fluororubber, polyacrylate rubber, Polyurethane or polytetrafluoroethylene (PTFE) exists. Schwingungdämpfende Ummantelung einer Rohrfeder (x) in einem Druckmanometer (x), nach Anspruch 3, wobei die schwingungsdämpfende Kunststoffummantelung (x) mit einem Klebstoff kraft- und formschlüssig mit der Rohrfeder (x) verbunden ist.Vibration damping jacket of a Bourdon tube (x) in a pressure gauge (x) according to claim 3, wherein the vibration-damping plastic sheath (x) with an adhesive frictionally and positively with the Bourdon tube (x) is connected. Schwingungdämpfende Ummantelung einer Rohrfeder (x) in einem Druckmanometer (x), nach Anspruch 3, wobei die schwingungsdämpfende Kunststoffummantelung (x) durch Ausschäumen kraft- und formschlüssig mit der Rohrfeder (x) verbunden ist.Vibration damping jacket of a Bourdon tube (x) in a pressure gauge (x) according to claim 3, wherein the vibration-damping plastic sheath (x) frictional and form-fitting by foaming with the bourdon tube (x) is connected.
DE200710062864 2007-12-21 2007-12-21 Vibration damping casing e.g. plastic hose, for use in tubular spring of pressure manometer, has shrink tube made of polyolefin, polyvinyl fluoride, PVC or PTFE, where casing is in form of plastic hose and is slid on tubular spring Withdrawn DE102007062864A1 (en)

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DE200710062864 DE102007062864A1 (en) 2007-12-21 2007-12-21 Vibration damping casing e.g. plastic hose, for use in tubular spring of pressure manometer, has shrink tube made of polyolefin, polyvinyl fluoride, PVC or PTFE, where casing is in form of plastic hose and is slid on tubular spring

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DE200710062864 DE102007062864A1 (en) 2007-12-21 2007-12-21 Vibration damping casing e.g. plastic hose, for use in tubular spring of pressure manometer, has shrink tube made of polyolefin, polyvinyl fluoride, PVC or PTFE, where casing is in form of plastic hose and is slid on tubular spring

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103342844A (en) * 2013-06-06 2013-10-09 安徽旺达铜业发展有限公司 Cable sheath material containing aluminum sulfate film-coated powder
US20160294033A1 (en) * 2013-11-01 2016-10-06 Etegent Technologies Ltd. Broadband Waveguide
US10352778B2 (en) 2013-11-01 2019-07-16 Etegent Technologies, Ltd. Composite active waveguide temperature sensor for harsh environments
US10852277B2 (en) 2014-04-09 2020-12-01 Etegent Technologies, Ltd. Active waveguide excitation and compensation
US11473981B2 (en) 2017-04-10 2022-10-18 Etegent Technologies Ltd. Damage detection for mechanical waveguide sensor

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1773458C3 (en) 1968-05-17 1975-12-04 G.L. Rexroth Gmbh, 8770 Lohr Safety device for pressure gauges filled with damping fluid
DE2532720A1 (en) 1974-07-26 1976-02-05 Vilter Manufacturing Corp PRESSURE METER CONNECTOR BASE

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1773458C3 (en) 1968-05-17 1975-12-04 G.L. Rexroth Gmbh, 8770 Lohr Safety device for pressure gauges filled with damping fluid
DE2532720A1 (en) 1974-07-26 1976-02-05 Vilter Manufacturing Corp PRESSURE METER CONNECTOR BASE

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103342844A (en) * 2013-06-06 2013-10-09 安徽旺达铜业发展有限公司 Cable sheath material containing aluminum sulfate film-coated powder
CN103342844B (en) * 2013-06-06 2016-04-20 安徽旺达铜业发展有限公司 A kind of cable jacket material containing Tai-Ace S 150 film-coated powder
US20160294033A1 (en) * 2013-11-01 2016-10-06 Etegent Technologies Ltd. Broadband Waveguide
US20190157733A1 (en) * 2013-11-01 2019-05-23 Etegent Technologies Ltd. Broadband Waveguide
US10352778B2 (en) 2013-11-01 2019-07-16 Etegent Technologies, Ltd. Composite active waveguide temperature sensor for harsh environments
US10854941B2 (en) * 2013-11-01 2020-12-01 Etegent Technologies, Ltd. Broadband waveguide
US10852277B2 (en) 2014-04-09 2020-12-01 Etegent Technologies, Ltd. Active waveguide excitation and compensation
US11982648B2 (en) 2014-04-09 2024-05-14 Etegent Technologies, Ltd. Active waveguide excitation and compensation
US11473981B2 (en) 2017-04-10 2022-10-18 Etegent Technologies Ltd. Damage detection for mechanical waveguide sensor
US11686627B2 (en) 2017-04-10 2023-06-27 Etegent Technologies Ltd. Distributed active mechanical waveguide sensor driven at multiple frequencies and including frequency-dependent reflectors

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Effective date: 20141223