DE841798C - manometer - Google Patents

manometer

Info

Publication number
DE841798C
DE841798C DED5246A DED0005246A DE841798C DE 841798 C DE841798 C DE 841798C DE D5246 A DED5246 A DE D5246A DE D0005246 A DED0005246 A DE D0005246A DE 841798 C DE841798 C DE 841798C
Authority
DE
Germany
Prior art keywords
bourdon tube
filled
balls
gas
glass
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
Application number
DED5246A
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Priority to DED5246A priority Critical patent/DE841798C/en
Application granted granted Critical
Publication of DE841798C publication Critical patent/DE841798C/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L7/00Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
    • G01L7/02Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
    • G01L7/04Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges in the form of flexible, deformable tubes, e.g. Bourdon gauges

Description

Bei Manometern besteht die Gefahr, daß bei' einem Aufreißen der Rohrfeder, wie z. B. beim Abspringen des weich aufgelöteten Rohrfederendstückes, das Druckgas schlagartig in den Gelläuse= raum expandiert und daß durch die schnelle, übermäßige Druckerhöhung die Glasscheibe herausgedrückt wird. Durch die wegfliegenden Splitter kann Sehaden entstehen. Um Unfälle zu verhindern, hat .man 'bereits vorgeschlagen, an dem Gehäuse Entlüftungsöffnungen in der Gehäuserückwand einzusetzen, damit das gegebenenfalls expandierende Gas entweichen .kann. Die Öffnungen reichen aber meistens für das notwendig schnelle Entweichen des Gases nicht aus. Um auch in diesem Fall Schaden durch die wegfliegenden Glasteile zu verhindern, hat man bereits vorgeschlagen, die Glasscheibe zu verstärken oder vor ihr ein Gitter anzuordnen.With pressure gauges there is a risk that if the Bourdon tube rips open, such as B. when jumping off the softly soldered Bourdon tube end piece, the compressed gas suddenly expanded into the gellouse space and that due to the rapid, excessive Pressure increase the glass pane is pushed out. By the splinters flying away Sehaden can arise. To prevent accidents, 'man' has already suggested that to insert ventilation openings in the rear wall of the housing so that the possibly expanding gas can escape. The openings are usually sufficient for the necessary rapid escape of the gas is not sufficient. To even in this case It has already been proposed to prevent damage from the glass parts flying off to reinforce the pane of glass or to place a grille in front of it.

Die Erfindung beseitigt die Nachteile und schlägt einen anderen Weg zur Lösung dieser Nachteile vor. Ihr liegt der Gedanke zugrunde, das Rohrfedervolumen selbst sehr klein zu halten. Zu diesem Zweck besteht die Erfindung darin, daß die Rohrfeder mit festen, die Bewegung der Rohrfeder nicht hemmenden Körpern, wie Kugeln, Streifen usw., ausgefüllt ist. Als derartige feste Körper können alle gegen das zu messende Gas indifferenten Stoffe verwendet werden. So können z. B. Glaskugeln, entsprechend feingekörnter Sand, oder Kugeln aus anderen Stoffen, wie Metallen, verwandt werden. Weiterhin können zur Füllung der Rohrfeder ein oder mehrere, gegebenenfalls zu Paketen vereinte Streifen von Metall, Kunststoff od: ,dgl. dienen. Durch die Verminderung des Rohrfedervolumens wird erreicht, daß beim Rohrfederbruch nur verhältnismäßigwenig Gas schlagartig in das Gehäuse expandiert. Die Gasmenge reicht zur Zerstörung des,Gehäuses nicht aus.The invention overcomes the disadvantages and proposes a different approach to solve these disadvantages. It is based on the idea, the Bourdon tube volume keep it very small. To this end, the invention consists in that the Bourdon tube with fixed bodies, such as balls, which do not inhibit the movement of the Bourdon tube, Stripes, etc., is filled. As such solid bodies, all can against that gas-indifferent substances to be measured are used. So z. B. glass balls, appropriately fine-grained sand, or balls made of other materials, such as metals, be used. Furthermore, one or more, optionally strips of metal, plastic or the like, combined to form packages. to serve. Through the Reduction of the Bourdon tube volume is achieved that only relatively little when the Bourdon tube breaks Gas suddenly expands into the housing. The amount of gas is enough to destroy the housing not from.

. In der Zeichnung sind zwei Ausführungsformen &et Erfindung schematisch dargestellt, und zwar Abb. i ein Manometer mit einer Rohrfeder, die mit Glaskugeln @bzw. Sand gefüllt ist, und "Abb. 2 eine Rohrfederfüllung aus Blechstreifen; Abb. 3 zeigt einen Schnitt durch .die Rohrfeder nach Abb.2.. In the drawing two embodiments & et invention are schematic shown, namely Fig. i, a pressure gauge with a Bourdon tube with glass balls @respectively. Sand is filled, and "Fig. 2 a tube spring filling made of sheet metal strips; Fig. 3 shows a section through .the Bourdon tube according to Fig.2.

Bei beiden Ausführungsformen ist der Anschlußstutzen mit i und das Gehäuse mit 2 bezeichnet. In dem oberen Teil des Anschlußstutzens ist die Rohrfeder 3 eingelötet, die an ihrem freien Ende 4 mit dem Übertragungswerk 5 verbunden ist. Auf diesem sitzt der Zeiger 6.In both embodiments, the connection piece is marked with i and that Housing designated with 2. The Bourdon tube is in the upper part of the connecting piece 3 soldered in, which is connected to the transmission mechanism 5 at its free end 4. The pointer 6 sits on this.

Die Rohrfeder der Ausführungsform nach Abb. i ist mit kleinen Glaskugeln gefüllt.The Bourdon tube of the embodiment according to Fig. I has small glass balls filled.

Die Rohrfeder nach Ausführung der Abb. 2 ist mit Blechstreifen 7 gefüllt, wie insbesondere Abb. 3 im Querschnitt zeigt.The Bourdon tube according to the embodiment of Fig. 2 is filled with sheet metal strips 7, as especially Fig. 3 shows in cross section.

Claims (1)

PATENTANSPRUCH: Manometer, dadurch gekennzeichnet, daß die Rohrfeder mit festen, die Bewegung der Rohrfeder nicht hemmenden Körpern, wie Kugeln, Streifen usw., gefüllt i4- PATENT CLAIM: Pressure gauge, characterized in that the Bourdon tube is filled with solid bodies, such as balls, strips, etc., which do not hinder the movement of the Bourdon tube.
DED5246A 1950-08-12 1950-08-12 manometer Expired DE841798C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED5246A DE841798C (en) 1950-08-12 1950-08-12 manometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED5246A DE841798C (en) 1950-08-12 1950-08-12 manometer

Publications (1)

Publication Number Publication Date
DE841798C true DE841798C (en) 1952-06-19

Family

ID=7031335

Family Applications (1)

Application Number Title Priority Date Filing Date
DED5246A Expired DE841798C (en) 1950-08-12 1950-08-12 manometer

Country Status (1)

Country Link
DE (1) DE841798C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2262744A1 (en) * 1972-12-21 1974-07-04 Franklin Gerald Reick Elastic type low pressure gauge - using bladder inside parallel spring blades
US3934479A (en) * 1972-12-06 1976-01-27 Haenni & Cie Aktiengesellschaft Measurement apparatus influenced by disturbing ambient temperature fluctuations
DE3610946A1 (en) * 1986-04-02 1987-10-08 Bosch Gmbh Robert PRESSURE SENSOR

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3934479A (en) * 1972-12-06 1976-01-27 Haenni & Cie Aktiengesellschaft Measurement apparatus influenced by disturbing ambient temperature fluctuations
DE2262744A1 (en) * 1972-12-21 1974-07-04 Franklin Gerald Reick Elastic type low pressure gauge - using bladder inside parallel spring blades
DE3610946A1 (en) * 1986-04-02 1987-10-08 Bosch Gmbh Robert PRESSURE SENSOR

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