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DE102004028876A1 - Sealing device for connecting openings, has two seals placed one behind other between adjacent opening areas, and sealing space sealed against outer space by seals, such that space is subjected to high pressure against one of two rooms - Google Patents

Sealing device for connecting openings, has two seals placed one behind other between adjacent opening areas, and sealing space sealed against outer space by seals, such that space is subjected to high pressure against one of two rooms Download PDF

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Publication number
DE102004028876A1
DE102004028876A1 DE200410028876 DE102004028876A DE102004028876A1 DE 102004028876 A1 DE102004028876 A1 DE 102004028876A1 DE 200410028876 DE200410028876 DE 200410028876 DE 102004028876 A DE102004028876 A DE 102004028876A DE 102004028876 A1 DE102004028876 A1 DE 102004028876A1
Authority
DE
Germany
Prior art keywords
seals
space
sealing
rooms
sealing device
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.)
Withdrawn
Application number
DE200410028876
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German (de)
Inventor
Rüdiger Dipl.-Ing. Nebelsiek
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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 DaimlerChrysler AG filed Critical DaimlerChrysler AG
Priority to DE200410028876 priority Critical patent/DE102004028876A1/en
Publication of DE102004028876A1 publication Critical patent/DE102004028876A1/en
Withdrawn legal-status Critical Current

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/22Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/225Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for welds
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/025Details with respect to the testing of engines or engine parts

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Pressure Vessels And Lids Thereof (AREA)

Abstract

The device has a hollow body (5) attached to a connecting piece (4), and seals (6, 7) placed one behind the other between adjacent opening surrounding areas at a distance from one another along a direction of flow. A sealing space (8) is formed between the seals and sealed against an outer space by the seals, such that the sealing space can be subjected to a high pressure against one of two rooms.

Description

Die Erfindung betrifft eine Dichteinrichtung für eine Verbindung zweier Räume nach dem Oberbegriff des Patentanspruchs 1.The The invention relates to a sealing device for a connection of two rooms the preamble of claim 1.

Derartige Dichteinrichtungen können beispielsweise eingesetzt werden in Prüfeinrichtungen, in denen Hohlkörper auf Dichtheit geprüft werden. In diesen Fällen werden die zu prüfenden Hohlkörper über eine in diesen vorhandene Öffnung auf einen Stutzen dicht aufgesteckt und im Inneren unter Druck beispielsweise mit einem Prüfgas abgedrückt. Bei Dichtheit des Hohlkörpers und der Dichtung zu dem Stutzen, durch das Druckgas aufgegeben wird, darf kein Prüfgas nach außen austreten. Um bei einer vorhandenen Undichtigkeit diese erkennen zu können, erfolgt die Prüfung in einer den Hohlkörper als zu prüfendes Teil umgebenden abgeschlossenen Kammer. Festgestellt wird eine Undichtigkeit bei diesem Prüfsystem durch ein Detektieren von in die Kammer ausgetretenem Prüfgas, das eine gegenüber der Kammeratmosphäre andersartige Zusammensetzung besitzt. Liegt die Dichtung zwischen der Öffnung des zu prüfenden Hohlkörpers und des Anschlussstutzens für das Prüfgas innerhalb der Kammer, so muss auch die Dichtung absolut dicht sein, da anderenfalls durch diese austretendes Prüfgas eine im Grunde nicht vorhandene Undichtigkeit in der Außenwand des zu prüfenden Hohlkörpers fälschlich annehmen lassen könnte.such Sealing devices can For example, be used in testing facilities in which hollow body Tightness tested become. In these cases will be the ones to be tested Hollow body over a in this existing opening attached to a nozzle tight and inside under pressure, for example with a test gas pulled the trigger. For tightness of the hollow body and the seal to the nozzle, is given by the pressurized gas, may no test gas outward escape. To recognize this in case of an existing leak to be able to the exam in a the hollow body as to be tested Part surrounding enclosed chamber. A leak is found in this test system by detecting test gas leaked into the chamber, the one opposite the chamber atmosphere has different composition. Is the gasket between the opening of the test to be tested hollow body and the connecting piece for the test gas inside the chamber, so the seal must be absolutely tight, otherwise due to this leaking test gas basically nonexistent Leakage in the outer wall of the test to be tested hollow body false could accept.

Bei beispielsweise Dichtungen für derartige Anwendungsfälle beschäftigt sich die Erfindung mit dem Problem, absolut sicherzustellen, dass zumindest kein Prüfgas in die Außenkammer eintreten kann und zwar auch dann nicht, wenn die Dichtungen nicht absolut dicht schließen sollten.at for example, gaskets for such applications employed The invention deals with the problem of absolutely ensuring that at least no test gas in the outer chamber can not occur even if the seals are not Close absolutely tight should.

Gelöst wird dieses Problem bei einer gattungsgemäßen Dichteinrichtung erfindungsgemäß durch eine Ausbildung nach dem kennzeichnenden Merkmal des Patentanspruchs 1.Is solved this problem in a generic sealing device according to the invention by An education according to the characterizing feature of the claim 1.

Eine vorteilhafte und zweckmäßige Ausgestaltung ist Gegenstand des Unteranspruchs.A advantageous and expedient embodiment is the subject of the claim.

Die Erfindung beruht auf dem allgemeinen Gedanken, den Raum zwischen zwei strömungsmäßig hintereinander liegenden Dichtungen mit Druck derart zu beaufschlagen, dass zumindest gegenüber einem der gegeneinander gedichteten Räume eine Leckage lediglich von dem zwischen den beiden Dichtungen liegenden Raum in diesen hinein und nicht umgekehrt möglich ist.The Invention is based on the general idea of the space between two fluidly behind each other lying pressures to be applied with pressure such that at least opposite one of the sealed rooms leakage only from that between the two seals Space into them and not vice versa is possible.

Bei dem eingangs beschriebenen Anwendungsfall kann hierdurch sichergestellt werden, dass aus dem zu prüfenden Hohlkörper kein Prüfgas in die umgebende Kammer durch die Dichtung strömen kann. Hierdurch wird mit einer solchen Dichtung sicher vermieden, dass durch eine eventuell undichte Dichtung ein an sich dichter Hohlkörper während des Prüfprozesses fälschlicherweise als undicht angezeigt wird.at the application described above can thereby be ensured be that out of the one to be tested hollow body no test gas into the surrounding chamber through the seal. This is with Such a seal certainly avoided by any leaky seal a self-dense hollow body during the test process falsely is displayed as leaking.

Als besonders vorteilhaft erweist sich eine solche Dichtung in Anwendungsfällen, in denen ein Steckverschluss zur Dichtung zwischen zwei Stutzen dient.When Particularly advantageous, such a seal proves in applications, in which is a plug-in closure for sealing between two nozzles.

Ein nachstehend noch näher erläutertes Ausführungsbeispiel ist in der Zeichnung dargestellt.One in more detail below explained embodiment is shown in the drawing.

In dieser zeigt die einzige:In this shows the only one:

1 einen Schnitt durch eine Prüfeinrichtung mit über einen gedichteten Steckverschluss miteinander verbundene Räume. 1 a section through a test device with a sealed plug closure interconnected spaces.

Auf einem Prüftisch 1 ist eine Glocke 2 zur Bildung einer geschlossenen Prüfkammer 3 dicht aufgesetzt.On a test table 1 is a bell 2 to form a closed test chamber 3 close up.

Von dem Prüftisch 1 führt ein Stutzen 4 in das Innere der Prüfkammer 3.From the test table 1 leads a neck 4 into the interior of the test chamber 3 ,

Auf den Stutzen 4 über einen Steckverschluss dicht aufgesetzt ist ein auf Dichtheit zu prüfender Hohlkörper 5. Die Dichtung zwischen dem Hohlkörper 5 und dem Stutzen 4 ist durch eine Radialdichtung 6 und eine Axialdichtung 7 gegeben. Zwischen den beiden Dichtungen 6 und 7, die eine Art Labyrinthdichtung bilden, befindet sich ein dicht eingeschlossener Dichtungsraum 8. In den Hohlkörper 5 kann durch einen den Stutzen 4 durchdringenden Kanal 9 Prüfgas unter Druck eingebracht werden.On the neck 4 A leak-proofed hollow body is placed tightly over a plug-in closure 5 , The seal between the hollow body 5 and the neck 4 is through a radial seal 6 and an axial seal 7 given. Between the two seals 6 and 7 , which form a kind of labyrinth seal, is a tightly sealed sealing space 8th , In the hollow body 5 can through a the neck 4 penetrating channel 9 Test gas can be introduced under pressure.

Der Dichtungsraum 8 steht über einen weiteren, in dem Prüftisch 1 vorgesehenen Kanal 11 mit einem Außenbereich in Verbindung. Dieser Außenbereich kann beispielsweise von einer in der Zeichnung nicht dargestellten Druckquelle gebildet sein. Mit Hilfe dieser Druckquelle kann der Dichtungsraum 8 unter einen Druck gesetzt werden, der höher ist als der im Inneren des Hohlkörpers 5 angelegte Prüfdruck. Dies bedeutet, dass bei einer geringfügig undichten Radialdichtung 6 allenfalls Gas von dem Dichtungsraum 8 in das Innere des Hohlkörpers 5, nicht jedoch umgekehrt strömen kann. Hierdurch ist sichergestellt, dass unter keinen Umständen Prüfgas aus dem Hohlkör per 5 in den Prüfkammerraum 3 gelangen und dort die Dichtheitsprüfung mit Bezug auf den Hohlkörper verfälschen kann.The seal room 8th is about another, in the test table 1 provided channel 11 with an outdoor area in connection. This outdoor area may be formed for example by a pressure source, not shown in the drawing. With the help of this pressure source, the seal chamber 8th be placed under a pressure which is higher than that in the interior of the hollow body 5 applied test pressure. This means that with a slightly leaky radial seal 6 if necessary, gas from the sealing space 8th into the interior of the hollow body 5 , but not vice versa can flow. This ensures that under no circumstances test gas from the Hohlkör by 5 into the test chamber space 3 reach and there falsify the leak test with respect to the hollow body.

Claims (2)

Dichteinrichtung für eine Verbindung zweier einander zugeordneter Öffnungen miteinander kommunizierender Räume mit zwischen den angrenzenden Öffnungsrandbereichen bei einer Leckage strömungsmäßig beabstandet hintereinander liegenden Dichtungen (6, 7), dadurch gekennzeichnet, dass ein zwischen zwei hintereinander liegenden Dichtungen (6, 7) befindlicher, durch diese Dichtungen (6, 7) nach außen gedichteter Dichtungsraum (8) mit einem zumindest gegenüber einem der beiden kommunizierenden Räume höheren Druck beaufschlagbar ausgebildet ist.Sealing device for a connection of two mutually associated openings communicating spaces with each other between the adjacent opening edge regions in a leakage fluidly spaced successive seals ( 6 . 7 ), characterized in that a between two successive seals ( 6 . 7 ), through these seals ( 6 . 7 ) to the outside sealed sealing space ( 8th ) is designed to be acted upon by a higher pressure at least opposite one of the two communicating spaces. Dichteinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Verbindung der beiden Räume in der Form eines einfach und schnell betätigbaren Steckverschlusses ausgebildet ist.Sealing device according to claim 1, characterized that the connection of the two rooms in the form of a quick and easy operable plug closure is trained.
DE200410028876 2004-06-15 2004-06-15 Sealing device for connecting openings, has two seals placed one behind other between adjacent opening areas, and sealing space sealed against outer space by seals, such that space is subjected to high pressure against one of two rooms Withdrawn DE102004028876A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE200410028876 DE102004028876A1 (en) 2004-06-15 2004-06-15 Sealing device for connecting openings, has two seals placed one behind other between adjacent opening areas, and sealing space sealed against outer space by seals, such that space is subjected to high pressure against one of two rooms

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200410028876 DE102004028876A1 (en) 2004-06-15 2004-06-15 Sealing device for connecting openings, has two seals placed one behind other between adjacent opening areas, and sealing space sealed against outer space by seals, such that space is subjected to high pressure against one of two rooms

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Publication Number Publication Date
DE102004028876A1 true DE102004028876A1 (en) 2006-01-05

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047040B3 (en) * 2006-10-02 2008-03-06 Boehringer Ingelheim Pharma Gmbh & Co. Kg Sterile vial package tightness determining apparatus, has spacer provided with different characteristics, thickness and diameter for introducing distance between stopper positions so that leakage is generated to guide test gas to tester
RU2418305C1 (en) * 2010-01-11 2011-05-10 Государственное образовательное учреждение высшего профессионального образования Самарский государственный аэрокосмический университет имени академика С.П. Королева (СГАУ) Device for checking air-tightness of spacecraft structural components
CN109297649A (en) * 2018-11-28 2019-02-01 首都航天机械有限公司 A device for rapid helium mass spectrometry leak detection of circular welds in diaphragms
CN115962891A (en) * 2022-11-28 2023-04-14 广东贝洛新材料科技有限公司 Take central hole diaphragm class product to exempt from to wear inner core airtight test structure in advance

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762212A (en) * 1971-07-15 1973-10-02 Advanced Technologies Inc Leak testing apparatus and methods
DE2802645A1 (en) * 1978-01-21 1979-07-26 Leybold Heraeus Gmbh & Co Kg METHOD AND DEVICE FOR LEAK TESTING
DE2816687A1 (en) * 1978-04-18 1979-10-31 Leybold Heraeus Gmbh & Co Kg Testing integrity of hollow article - involves using leak detection procedure by placing article in sealed test chamber
DE4212938A1 (en) * 1992-04-18 1993-10-21 Rexroth Mannesmann Gmbh Seal testing appts. e.g. for testing vehicle shock absorber - has pressure source for filling first chamber with gas and uses pressure sensor to determine pressure increase in second chamber

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3762212A (en) * 1971-07-15 1973-10-02 Advanced Technologies Inc Leak testing apparatus and methods
DE2802645A1 (en) * 1978-01-21 1979-07-26 Leybold Heraeus Gmbh & Co Kg METHOD AND DEVICE FOR LEAK TESTING
DE2816687A1 (en) * 1978-04-18 1979-10-31 Leybold Heraeus Gmbh & Co Kg Testing integrity of hollow article - involves using leak detection procedure by placing article in sealed test chamber
DE4212938A1 (en) * 1992-04-18 1993-10-21 Rexroth Mannesmann Gmbh Seal testing appts. e.g. for testing vehicle shock absorber - has pressure source for filling first chamber with gas and uses pressure sensor to determine pressure increase in second chamber

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006047040B3 (en) * 2006-10-02 2008-03-06 Boehringer Ingelheim Pharma Gmbh & Co. Kg Sterile vial package tightness determining apparatus, has spacer provided with different characteristics, thickness and diameter for introducing distance between stopper positions so that leakage is generated to guide test gas to tester
RU2418305C1 (en) * 2010-01-11 2011-05-10 Государственное образовательное учреждение высшего профессионального образования Самарский государственный аэрокосмический университет имени академика С.П. Королева (СГАУ) Device for checking air-tightness of spacecraft structural components
CN109297649A (en) * 2018-11-28 2019-02-01 首都航天机械有限公司 A device for rapid helium mass spectrometry leak detection of circular welds in diaphragms
CN109297649B (en) * 2018-11-28 2020-10-23 首都航天机械有限公司 Device for quickly detecting leakage of inner circular welding seam of diaphragm by helium mass spectrometer
CN115962891A (en) * 2022-11-28 2023-04-14 广东贝洛新材料科技有限公司 Take central hole diaphragm class product to exempt from to wear inner core airtight test structure in advance

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8127 New person/name/address of the applicant

Owner name: DAIMLERCHRYSLER AG, 70327 STUTTGART, DE

8127 New person/name/address of the applicant

Owner name: DAIMLER AG, 70327 STUTTGART, DE

8130 Withdrawal