EP2005548A1 - Passage de conduite résistant à la chaleur - Google Patents

Passage de conduite résistant à la chaleur

Info

Publication number
EP2005548A1
EP2005548A1 EP06807703A EP06807703A EP2005548A1 EP 2005548 A1 EP2005548 A1 EP 2005548A1 EP 06807703 A EP06807703 A EP 06807703A EP 06807703 A EP06807703 A EP 06807703A EP 2005548 A1 EP2005548 A1 EP 2005548A1
Authority
EP
European Patent Office
Prior art keywords
limiting means
sealing
line
cable bushing
leitungsdurchfuhrung
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Withdrawn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
EP06807703A
Other languages
German (de)
English (en)
Inventor
Heinrich Bertke
Sven Meineke
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.)
Elster GmbH
Original Assignee
Elster GmbH
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 Elster GmbH filed Critical Elster GmbH
Priority to EP06807703A priority Critical patent/EP2005548A1/fr
Publication of EP2005548A1 publication Critical patent/EP2005548A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/22—Installations of cables or lines through walls, floors or ceilings, e.g. into buildings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G15/00—Cable fittings
    • H02G15/02—Cable terminations
    • H02G15/04—Cable-end sealings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02—Details
    • H02G3/06—Joints for connecting lengths of protective tubing or channels, to each other or to casings, e.g. to distribution boxes; Ensuring electrical continuity in the joint
    • H02G3/0616—Joints for connecting tubing to casing
    • H02G3/0625—Joints for connecting tubing to casing with means for preventing disengagement of conductors
    • H02G3/0675—Joints for connecting tubing to casing with means for preventing disengagement of conductors with bolts operating in a direction parallel to the conductors

Definitions

  • the present invention relates to a heat resistant cable feedthrough.
  • the invention relates to a cable feedthrough for a gas meter housing.
  • Such cable bushings have sealing means which consist of a first material which is stable and sealed in a temperature range below a first temperature. Cable bushings serve the purpose of enabling a targeted exchange of substances, energy or signals through a barrier. In counters for fuel or other consumption meter voltage signals between a housing interior and an exterior space to be replaced or a power supply should be provided. However, the cable bushing must seal the housing interior against uncontrolled mass transfer to the outside. At such a seal different requirements are made depending on the application of the housing. When gas meter housings to ensure that the interior of the gas meter housing is gas-tight sealed from the outside. Since the gas pressure in most gas meter housings is low, a suitably shaped and flexible elastomer or plastic seal is usually sufficient for sealing under standard conditions.
  • heat-resistant bushings are known in the prior art, in which the sealing means are formed of a ceramic material. Through this material electrical lines are guided. The ceramic body withstands the temperatures occurring in the event of fire for a sufficiently long time. It is sufficient that the implementation until the ignition temperature of the gas sufficient seals, because above this temperature escaping gas is immediately flared and there is no risk of explosion.
  • seals with ceramic sealants are expensive to assemble, expensive to manufacture and inflexible to handle, since each individual, uninsulated lines are enclosed in a ceramic. It is an object of the invention to provide a heat-resistant cable feedthrough for a gas meter housing, which offers an easily assembled structure.
  • the line feedthrough according to the invention has limiting means which are formed from a second material which is stable in a temperature range above the first temperature and which are designed in such a way that a gas stream flowing through the line feedthrough can be limited to a predetermined volume per unit of time.
  • the limiting means are provided separately or connected to the sealing means.
  • the limitation by the limiting means takes place in particular when the sealants do not develop any (or only diminished) sealing effect, eg because they are braised, melted or burnt due to the action of heat. In this case, the line feedthrough of gas can be flowed through.
  • the first temperature below which the sealants are resistant and develop a sealing effect is to pretend that under normal environmental conditions of the gas meter, the first temperature is not exceeded.
  • the temperature range in which the first material is resistant and sealing may range from a minimum temperature to the first temperature. Typical values for the first temperature are between 80 ° C. and 200 ° C.
  • There are numerous materials which are suitable as sealing materials and which seal appropriately below a temperature from this range eg silicone, Viton, NBR-nitrile butadiene rubber). However, other materials such as fibers or resins may be used as the material for the sealants.
  • the limiting means are usually also resistant in the entire temperature range, in which the sealants are resistant. However, it is essential to the invention that they be stable in a temperature range above the first temperature. This condition is fulfilled, for example, by thermosetting plastics, metals, ceramics or glasses. Thermosetting plastics are particularly favorable in the production.
  • the restriction means are to be arranged in the passage so that they can limit the gas flow through the passage. For example, they occupy a part of the cross section of the line feedthrough, in order to free up space for the line to be carried out in normal operation.
  • the free cross-section which is not blocked by the limiting means, however, is chosen so that above the first temperature and at a maximum expected pressure difference between the interior and exterior of the gas meter housing, a flowing gas flow is limited.
  • the free cross-section is to be dimensioned so that even if the sealant is completely absent and the pressure difference to be expected is the highest possible. Gas volume is lower than a volume which can form an explosive mixture.
  • the first material from which the sealants are formed includes a flexible elastomer or a plurality of flexible elastomers, such as rubber. Rubber, Viton or others.
  • a flexible elastomer or a plurality of flexible elastomers such as rubber. Rubber, Viton or others.
  • sealing plastics are particularly well suited for forming a gastight connection with simple mechanical means.
  • sealants may e.g. be designed as a plug, skins or rings.
  • a conduit may be passed past or through the sealing means and the sealing means may be pressed or crimped to seal the free cross-section of the conduit passage.
  • the second material from which the boundary means are formed preferably contains a thermosetting plastic.
  • these materials are usually at least temporarily heat-resistant at the temperatures which occur in the event of fire, and are also easy to process and shape.
  • the limiting means can therefore be easily brought into the desired shape.
  • a thermoset material for example, a plastic based on a phenol-formaldehyde resin is suitable.
  • Fillers may also be incorporated in the material, e.g. Glass fibers and minerals, which ensure the dimensional stability at high ambient temperatures.
  • plastics are cheaper to manufacture.
  • the limiting means can be designed such that the cross-section of the passage blocked by them under normal operating conditions. (low temperature) is less than the blocked cross section at higher temperatures (fire). It is essential that, in the event of a fire, the cross-section released by the limiting means causes an uncritical amount of gas per unit of time to flow through the passage at the expected pressure differences.
  • the sealing means have a recess for receiving a conduit or / and the limiting means have a recess for receiving a conduit.
  • the recess may be adapted to ensure the best possible sealing effect between the sealant and line.
  • the formation of a corresponding receptacle in the limiting means ensures in particular that the line without bruising and damage to the limiting means over or can be guided therethrough.
  • the bushing preferably has a socket or sleeve which is secured by fastening means, e.g. a thread, in a corresponding bore or counter-mount in the housing of the gas meter can be fastened.
  • the sealing means and limiting means may be arranged in the socket preferably axially one behind the other. The line to be passed can then be passed through the sealing and limiting means, so that they surround the line.
  • the limiting means are designed in several parts.
  • a multi-part design of the limiting means facilitates in particular the assembly of a cable bushing according to the invention. Since the limiting means need not be designed for the complete sealing of the bushing cross-section, gaps between the individual parts of the limiting means may well remain. It is also possible to form the sealing means and the limiting means as an integral component, eg by having a free cross-section in the limiting means with the material. rial of the sealant is filled, through which the line is guided. Also, for example, a metal plug may be provided as a limiting means with a flexible jacket or sealing ring. In the event of fire, the sealing action of the flexible jacket or sealing ring is omitted, but the metal plug still blocks sufficient parts of the cross-section of the passage to limit the gas flow.
  • Figure 1 shows a schematic front view of a ceramic Kaus sacrificed according to the prior art.
  • FIG. 2 shows a perspective view of the ceramic lead bushing from FIG. 1.
  • FIG. 3 shows a schematic exploded view of a line feedthrough according to the invention.
  • Figure 4 shows the Kirs press gagung according to Figure 3 in the assembled state.
  • Figure 1 shows a ceramic bushing 1 with a metallic frame or shell 2, in which a ceramic material 3 is arranged.
  • a ceramic material 3 is arranged in the ceramic material 3 .
  • e- lectric conductor 4 are baked.
  • a gas-tight connection is formed Rankg each.
  • Figure 2 shows the für ung perspective view.
  • the lines 4 are uninsulated and unmarked guided by the ceramic material 3.
  • FIG. 3 shows an exploded view of a cable feedthrough according to the invention.
  • the implementation is to be mounted in a wall 10 of a Gasiereergehauses.
  • an opening 11 is formed which is bounded by a thread 12.
  • a sleeve 13, with an internal thread 12 corresponding external thread 14 can be screwed into the opening 11.
  • the sleeve 13 is made of metal (eg measuring sing) and has inside a conical bore, which in the direction of the outer space (in the drawing plane left) is rejuvenated.
  • a with its dimensions adapted to the tapered bore formed in the sleeve 13 truncated cone 15 is made of an elastomer (for example, NBR nitrile-butadiene-rubber).
  • the truncated cone 15 can be inserted into the conical bore of the sleeve 13 and can be pressed therein as a sealant packing, so that a tight connection is created between the truncated cone 15 and the sleeve 13.
  • a through hole 16 is formed, through which a ribbon cable (not shown) can be guided.
  • the recess is therefore formed as the profile of the ribbon cable matched through slot along the axis of symmetry of the truncated cone.
  • two half-shell metal parts 17 and 18 are formed, each having almost semicircular front surfaces 17A and 18A.
  • the radially outer boundaries 17B and 18B are adapted in their slope to the slope of the tapered bore in the sleeve 13.
  • a union nut 19 with an internal thread 20 is dimensioned such that it can be screwed onto a corresponding external thread 14A of the sleeve 13.
  • the union nut has a recess 21 through which the lead to be performed is navigable.
  • the union nut 19 completes the Kirs notebook satinung on the housing inside of the Gasiereergehauses.
  • FIG. 4 shows the components of the cable guide according to the invention shown in FIG. 3 in the assembled state.
  • the sleeve 13 is screwed with its external thread 14 in the internal thread 12 of the wall 10.
  • the union nut 19 slides on the half-shelled parts 17 and 18 and prints them into the conical bore.
  • the sealing truncated cone 15 bears sealingly against the conical bore of the sleeve 13.
  • the half-shells 17 and 18 of the limiting means are located in the housing inner side facing end face of the truncated cone 15 and compress the truncated cone in the direction of the tapered tapered bore in the sleeve 13 to ensure the sealing effect.
  • the passage heats up and the material of the sealant becomes soft, porous or fused and loses its sealing effect.
  • a cross section is released by the sleeve 13, the parts 17 and 18 of the limiting means of heat-resistant materials, by which a gas flow is limited to a maximum and tolerable level.
  • the free cross-section can be smaller, if the material of the parts 17 and 18 (here made of metal) expands with increasing temperature.
  • the parts 17 and 18 can be printed by the gas pressure in the interior further in the direction of the tapered bore in the sleeve, since then the resistance of the truncated cone 15 decreases. This contributes to a further narrowing of the gas passage.
  • This embodiment of the invention is simple and inexpensive to install manually or by machine and requires no expensive components.
  • the bushing is also suitable for many types of lines.
  • recesses adapted to the ducts may be provided, e.g. as holes, slots or recesses in the edge area.
  • a sheet of heat-resistant material may have a feed-through opening through which a flat cable is routed, the space between flat cable and limiting means being sealed by a flexible plastic as a sealant (e.g., by injection).
  • a sealant e.g., by injection

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Insulating Bodies (AREA)
  • Cable Accessories (AREA)
  • Gasket Seals (AREA)
  • Measuring Volume Flow (AREA)

Abstract

L'invention concerne un passage de conduite résistant à la chaleur pour un boîtier de compteur de gaz. Le passage de conduite comporte des joints (15) qui sont composés d'un premier matériau étanche résistant dans une zone de température inférieure à une première température. Le passage de conduite comporte également des moyens de limitation (17, 18) qui sont formés au moins d'un deuxième matériau résistant dans une zone de température supérieure à la première température. Les moyens de limitation (17, 18) sont fabriqués de telle sorte qu'un courant de gaz circulant dans le passage de conduite est limité à un volume donné par unité de temps. Les moyens de limitation garantissent qu'en cas d'actions de la chaleur qui feraient perdre leur étanchéité aux joints (15), le courant de gaz circulant à travers le passage de conduite ne dépasse pas un volume maximal tolérable par unité de temps.
EP06807703A 2006-03-31 2006-10-31 Passage de conduite résistant à la chaleur Withdrawn EP2005548A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06807703A EP2005548A1 (fr) 2006-03-31 2006-10-31 Passage de conduite résistant à la chaleur

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06112089A EP1841032A1 (fr) 2006-03-31 2006-03-31 Traversée de conduite résistant à la chaleur
PCT/EP2006/067998 WO2007118515A1 (fr) 2006-03-31 2006-10-31 Passage de conduite résistant à la chaleur
EP06807703A EP2005548A1 (fr) 2006-03-31 2006-10-31 Passage de conduite résistant à la chaleur

Publications (1)

Publication Number Publication Date
EP2005548A1 true EP2005548A1 (fr) 2008-12-24

Family

ID=36732156

Family Applications (2)

Application Number Title Priority Date Filing Date
EP06112089A Withdrawn EP1841032A1 (fr) 2006-03-31 2006-03-31 Traversée de conduite résistant à la chaleur
EP06807703A Withdrawn EP2005548A1 (fr) 2006-03-31 2006-10-31 Passage de conduite résistant à la chaleur

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06112089A Withdrawn EP1841032A1 (fr) 2006-03-31 2006-03-31 Traversée de conduite résistant à la chaleur

Country Status (4)

Country Link
EP (2) EP1841032A1 (fr)
CN (1) CN101401270B (fr)
RU (1) RU2398334C2 (fr)
WO (1) WO2007118515A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2383547A1 (fr) 2010-04-30 2011-11-02 Elster GmbH Compteur de fluide

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Publication number Priority date Publication date Assignee Title
DE102008049863A1 (de) * 2008-09-03 2010-03-04 Winkler Gmbh Wanddurchführung
DE102010046857B3 (de) * 2010-09-29 2011-12-15 Adc Gmbh Kabeldurchführung und Verfahren zur Durchführung eines Kabels durch eine Öffnung in einer Wand- oder Bodenplatte
DE102011110380B3 (de) 2011-08-17 2012-07-26 Johnson Electric Dresden Gmbh Fluiddichte Kabeldurchführung für Flachbandkabel
DE102015112284A1 (de) * 2015-07-28 2017-02-02 R. Stahl Schaltgeräte GmbH Explosionsgeschützte Anordnung und Verfahren zu deren Herstellung
DE102015112287A1 (de) * 2015-07-28 2017-02-02 R. Stahl Schaltgeräte GmbH Explosionsgeschützte Anordnung und Verfahren zu deren Herstellung
DE102015112285A1 (de) * 2015-07-28 2017-02-02 R.Stahl Schaltgeräte GmbH Explosionsgeschützte Anordnung und Verfahren zu deren Herstellung
US10008362B1 (en) * 2016-12-27 2018-06-26 Mapper Lithography Ip B.V. Optical fiber feedthrough device and fiber path arrangement
DE102018210841A1 (de) * 2018-07-02 2020-01-02 Volkswagen Aktiengesellschaft Durchführungselement sowie System aus einer Trennschicht und einem Durchführungselement
RU2705620C1 (ru) * 2018-12-24 2019-11-11 Василий Алексеевич Прусаков Огнестойкая кабельная проходка для стен и перекрытий зданий
CN110504560B (zh) * 2019-08-26 2020-11-10 中国商用飞机有限责任公司 密封穿墙装置和使用该装置的方法
DE102023202542A1 (de) 2023-03-22 2024-09-26 Robert Bosch Gesellschaft mit beschränkter Haftung Anschlussbaugruppe für ein Tankventil, Tankventil mit Anschlussbaugruppe

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EP0655817A1 (fr) * 1993-11-29 1995-05-31 RXS Kabelgarnituren Gesellschaft mit beschränkter Haftung Dispositif à vissage pour entrée de câble dans un manchon ou un logement
DE19742321A1 (de) * 1997-09-25 1999-04-01 Bosch Gmbh Robert Kabeldurchführung für Anschlußkabel eines Meßfühlers
DE20017583U1 (de) * 2000-10-13 2002-02-28 Reiku GmbH, 51674 Wiehl Durchführungsarmatur für ein Kabel oder Rohr
CN2716812Y (zh) * 2004-07-19 2005-08-10 宣国平 燃气表导线密封组件

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US4061344A (en) * 1976-06-23 1977-12-06 General Signal Corporation Fitting for penetration through fire rated barriers
GB8325444D0 (en) * 1983-09-22 1983-10-26 Bicc Plc Cable glands and terminations
DE3481467D1 (de) * 1984-02-28 1990-04-05 Werner Hauff Durchfuehrung fuer mindestens ein elektrisches kabel durch eine wandoeffnung.
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JP3925257B2 (ja) * 2002-03-15 2007-06-06 セイコーエプソン株式会社 気密チャンバにおける接続ラインの貫通構造およびこれを備えた吐出装置、並びに液晶表示装置の製造方法、有機ｅｌ装置の製造方法、電子放出装置の製造方法、ｐｄｐ装置の製造方法、電気泳動表示装置の製造方法、カラーフィルタの製造方法、有機ｅｌの製造方法、スペーサ形成方法、金属配線形成方法、レンズ形成方法、レジスト形成方法および光拡散体形成方法
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EP0655817A1 (fr) * 1993-11-29 1995-05-31 RXS Kabelgarnituren Gesellschaft mit beschränkter Haftung Dispositif à vissage pour entrée de câble dans un manchon ou un logement
DE19742321A1 (de) * 1997-09-25 1999-04-01 Bosch Gmbh Robert Kabeldurchführung für Anschlußkabel eines Meßfühlers
DE20017583U1 (de) * 2000-10-13 2002-02-28 Reiku GmbH, 51674 Wiehl Durchführungsarmatur für ein Kabel oder Rohr
CN2716812Y (zh) * 2004-07-19 2005-08-10 宣国平 燃气表导线密封组件

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See also references of WO2007118515A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2383547A1 (fr) 2010-04-30 2011-11-02 Elster GmbH Compteur de fluide

Also Published As

Publication number Publication date
RU2008143230A (ru) 2010-05-10
EP1841032A1 (fr) 2007-10-03
RU2398334C2 (ru) 2010-08-27
WO2007118515A1 (fr) 2007-10-25
CN101401270A (zh) 2009-04-01
CN101401270B (zh) 2011-06-08

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