FR2567230A1 - Fire-resistant stuffing box - Google Patents

Fire-resistant stuffing box Download PDF

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Publication number
FR2567230A1
FR2567230A1 FR8410603A FR8410603A FR2567230A1 FR 2567230 A1 FR2567230 A1 FR 2567230A1 FR 8410603 A FR8410603 A FR 8410603A FR 8410603 A FR8410603 A FR 8410603A FR 2567230 A1 FR2567230 A1 FR 2567230A1
Authority
FR
France
Prior art keywords
compression
annular
cable gland
seal
wall
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.)
Granted
Application number
FR8410603A
Other languages
French (fr)
Other versions
FR2567230B1 (en
Inventor
Robert De Vienne
Jacky Lienard
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.)
Capri Codec SA
Original Assignee
Capri Codec SA
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 Capri Codec SA filed Critical Capri Codec SA
Priority to FR8410603A priority Critical patent/FR2567230B1/en
Publication of FR2567230A1 publication Critical patent/FR2567230A1/en
Application granted granted Critical
Publication of FR2567230B1 publication Critical patent/FR2567230B1/en
Expired legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/18Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
    • F16J15/184Tightening mechanisms
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16JPISTONS; CYLINDERS; SEALINGS
    • F16J15/00Sealings
    • F16J15/16Sealings between relatively-moving surfaces
    • F16J15/18Sealings between relatively-moving surfaces with stuffing-boxes for elastic or plastic packings
    • F16J15/20Packing materials therefor
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L5/00Devices for use where pipes, cables or protective tubing pass through walls or partitions
    • F16L5/02Sealing
    • F16L5/06Sealing by means of a swivel nut compressing a ring or sleeve
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/02Details
    • H02G3/06Joints 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
    • H02G3/0616Joints for connecting tubing to casing
    • H02G3/0625Joints for connecting tubing to casing with means for preventing disengagement of conductors
    • H02G3/0658Joints for connecting tubing to casing with means for preventing disengagement of conductors with means constricting the conductor-insulation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Installation Of Indoor Wiring (AREA)
  • Gasket Seals (AREA)

Abstract

Fire-resistant stuffing box for static elongate elements compressing a metallic annular body 1 comprising fastening means 2, 3 on either side of the wall 4 to be passed through and having a progressive internal narrowing 5 for axial blocking with compression of an annular sealing gasket 6 as well as an annular member 7 for compressing the gasket, characterised in that the sealing gasket 6 is composed of a multitude of coaxial layers of expanded graphite compacted into an annular preform part then shaped by compression, in the stuffing box itself, against the narrowing 5 and the elongate element 8 by the compression member 7, then held under a compression force.

Description

Presse-étoupe coupe-feu. Fire-resistant cable gland.

La présente invention concerne les presse-étoupe, plus particulièrement destinés à être éventuellement soumis à des températures très élevées pouvant atteindre l.OOOoC.  The present invention relates to cable glands, more particularly intended to be optionally subjected to very high temperatures which can reach l.OOOoC.

Ces presse-étoupe peuvent être utilisés pour le passage de câbles électriques ou de tuyaux, ou encore de tiges à travers une paroi. These cable glands can be used for the passage of electric cables or pipes, or of rods through a wall.

Les presse-étoupe classiques sont généralement en métal ou en matière plastique. L'étanchéité est obtenue par compression d'une garniture en matériau élastique, caoutchouc ou autre polymère. Conventional cable glands are generally made of metal or plastic. The seal is obtained by compression of a lining made of elastic material, rubber or other polymer.

Le métal, généralement du laiton,a une bonne résistance aux températures élevées. Par contre, les garnitures n'y résistent pas, ce qui présente un danger en cas d'incendie et prohibe l'usage des presse-étoupe dans des ambiances à très hautes températures. Metal, usually brass, has good resistance to high temperatures. On the other hand, the linings do not withstand it, which presents a danger in the event of a fire and prohibits the use of cable glands in environments at very high temperatures.

L'invention a pour but un presse-étoupe susceptible de résister à des températures très élevées, 10000C ou plus. The object of the invention is to provide a cable gland capable of withstanding very high temperatures, 10000C or more.

L'invention a pour objet un presse-étoupe coupefeu pour éléments allongés statiques comprenant un corps annulaire métallique comportant des moyens de fixation de part et d'autre de la paroi à traverser et présentant un rétrécissement intérieur progressif de blocage axial avec compression d'une garniture d'étanchéité annulaire ainsi qu'un organe annulaire de compression de garniture caractérisé en ce que la garniture d'étanchéité est constituée par une pluralité de couches coaxiales de graphite expansé compactées en une préforme annulaire puis conformées par compression, dans le presse-étoupe lui-même, contre le rétrécissement et l'élément allongé par l'organe de compression, puis maintenue sous un effort de compression.  The subject of the invention is a fire-rated cable gland for static elongated elements comprising a metallic annular body comprising means for fixing on either side of the wall to be crossed and having a progressive internal narrowing of axial locking with compression of a annular seal and an annular seal compression member characterized in that the seal consists of a plurality of coaxial layers of expanded graphite compacted into an annular preform and then compression-compressed in the gland itself, against the narrowing and the element elongated by the compression member, then maintained under a compression force.

L'effort de compression constant auquel doit etre soumise la garniture peut être assuré dans les limites de déformations élastiques du métal constituant au moins le corps du presse-étoupe et éventuellement aussi l'organe annulaire de compression de la garniture ou encore par : - la paroi élastiquement compressible de l'élément allongé statique traversant le presse-étoupe qui est déforméeélastiquement par la pression exercée par la garniture comprimée, ou encore - par au moins un ressort de compression intercalé entre une rondelle d'appui sur la garniture d'étanchéité et l'organe de compression. The constant compression force to which the packing must be subjected can be ensured within the limits of elastic deformations of the metal constituting at least the body of the cable gland and possibly also the annular compression member of the packing or by: - the elastically compressible wall of the static elongate element passing through the cable gland which is elastically deformed by the pressure exerted by the compressed gasket, or else - by at least one compression spring interposed between a bearing washer on the gasket and the compression member.

Comme ressort, on peut utiliser de préférence des rondelles Belleville, éventail ou ondulées dont l'encombrement est moindre que celui des ressorts spirales. Pour constituer la garniture, on pourra utiliser notamment les bagues préformées en graphite souple et pur élaborées à partir de paillettes de graphite naturel traité thermiquement avant autoagglomération et orientation mécanique par compression sous pression relativement faible. De telles rondelles sont commercialisées notamment par la société Le Carbone-Lorraine, sous la marque PAPYEX. As a spring, it is preferable to use Belleville, fan or wavy washers whose size is less than that of the spiral springs. To form the lining, it is possible in particular to use the preformed rings in flexible and pure graphite produced from flakes of natural graphite heat treated before auto-agglomeration and mechanical orientation by compression under relatively low pressure. Such washers are sold in particular by the company Le Carbone-Lorraine, under the PAPYEX brand.

On peut aussi utiliser d'autres formes de graphites compressibles, notamment sous forme de microbilles frittées. It is also possible to use other forms of compressible graphite, in particular in the form of sintered microbeads.

L'invention sera mieux comprise à la lecture de la description détaillée qui va suivre et à l'examen des dessins annexés qui représentent à titre d'exemple non limitaif un mode de réalisation de l'invention. The invention will be better understood on reading the detailed description which follows and on examining the appended drawings which represent by way of nonlimiting example an embodiment of the invention.

La figure 1 est une vue schématique, éclatée, en demi-coupe axiale d'un presse étoupe suivant l'invention,
La figure 2 est une vue schématique, éclatée,.
FIG. 1 is a schematic exploded view in axial half-section of a cable gland according to the invention,
Figure 2 is a schematic exploded view.

en demi-coupe axiale du presse-étoupe de la figure 1. in axial half-section of the cable gland of Figure 1.

Sur les dessins les différents éléments sont affectés des mêmes repères numériques. In the drawings, the various elements are given the same reference numerals.

Le presse-étoupe représenté sur les figures est essentiellement constitué d'un corps tubulaire 1 en métal, laiton ou acier inoxydable dont une extrémité filetée 12 traverse une paroi 4 et sur laquelle vient visser un écrou 3 de l'autre cté de la paroi. Une rondelle d'étanchéité en graphwtesouple 9 est interposée entre la paroi 4 et logée danstane rainure circulaire d'un épaulement 2 du corps 1.  The cable gland shown in the figures essentially consists of a tubular body 1 made of metal, brass or stainless steel, one threaded end 12 of which passes through a wall 4 and onto which a nut 3 is screwed on the other side of the wall. A graphwtesouple sealing washer 9 is interposed between the wall 4 and housed in the circular groove of a shoulder 2 of the body 1.

L'intérieur du corps 1 est traversé par un perçage axial présentant un rétrécissement 5 progressif en direction de la partie filetée 12 ainsi qu'un taraudage 13 à l'entrée. A l'intérieur de ce taraudage 13 est comprimée une garniture 6 en graphite souple bloquée contre le rétrécissement 5 et un câble 8 à paroi élastique traversant le presse-étoupe par une rondelle intercalaire 11 sollicitée en direction du rétrécissement 5 par un chapeau fileté 7 vissant dans le taraudage 13. The interior of the body 1 is traversed by an axial bore having a progressive narrowing 5 in the direction of the threaded part 12 as well as a thread 13 at the inlet. Inside this internal thread 13 is compressed a lining 6 made of flexible graphite blocked against the narrowing 5 and a cable 8 with elastic wall passing through the stuffing box by an intermediate washer 11 biased towards the narrowing 5 by a threaded cap 7 screwing in the internal thread 13.

Sur la figure 2, on a indiqué en outre, en pointillés, un ressort 10 constitué par l'association de deux rondelles
Belleville opposées. Ces rondelles peuvent être utilisées dans tous les cas pour assurer une pression constante sur l'élément allongé traversant le presse-étoupe. Elles sont particulièrement indiquées dans le cas d'éléments allongés rigides tels que des tuyaux métalliques épais ou des-tiges métalliques. Elles peuvent être omises dans d'autres cas tels que lorsque l'élément allongé présente une paroi extérieure élastiquement compressible.
In Figure 2, there is also indicated, in dotted lines, a spring 10 formed by the association of two washers
Belleville opposite. These washers can be used in all cases to ensure constant pressure on the elongated element passing through the cable gland. They are particularly indicated in the case of rigid elongated elements such as thick metal pipes or metal rods. They can be omitted in other cases such as when the elongate element has an elastically compressible outer wall.

Claims (4)

REVENDICATIONS 1. Presse-étoupe coupe-feu pour éléments allongés statiques comprenant un corps annulaire métallique 1 comportant des moyens de fixation 2, 3 de part et d'autre de la paroi 4 à traverser et présentant un rétrécissement intérieur progressif 5 de blocage axial avec compression d'une garniture d'étanchéité annulaire 6 ainsi qu'un organe annulaire 7 de compression de la garniture, caractérisé en ce que la garniture d'étanchéité 6 est constituée par une pluralité de couches coaxiales de graphite expansé compactées en préforme annulaire puis conformées par compression, dans le presse-étoupe lui-même, contre le rétrécissement 5 et l'élément allongé 8, par l'organe de compression 7, puis maintenue sous un effort de compression. 1. Fire-resistant cable gland for static elongated elements comprising a metallic annular body 1 comprising fixing means 2, 3 on either side of the wall 4 to pass through and having a progressive internal narrowing 5 of axial locking with compression an annular seal 6 as well as an annular member 7 for compressing the seal, characterized in that the seal 6 is formed by a plurality of coaxial layers of expanded graphite compacted into an annular preform then shaped by compression, in the cable gland itself, against the narrowing 5 and the elongated element 8, by the compression member 7, then maintained under a compression force. 2. Presse-étoupe, suivant la revendication 1, caractérisé en ce qu'il comprend également au moins un joint annulaire d'étanchéité 9 en graphite interposé entre le corps et au moins une face de la paroi traversée 4. 2. Cable gland according to claim 1, characterized in that it also comprises at least one annular seal 9 made of graphite interposed between the body and at least one face of the wall passed through 4. 3. Presse-étoupe suivant la revendication 1 ou 2, caractérisé en ce qu'il renferme au moins un ressort de compression 10 intercalé entre une rondelle d'appui 11 sur la garniture d'étanchéité 6 et l'organe de compression 7. 3. Cable gland according to claim 1 or 2, characterized in that it contains at least one compression spring 10 interposed between a support washer 11 on the seal 6 and the compression member 7. 4. Presse-étoupe suivant la revendication 1 caractérisé en ce qu'il est associé à un élément allongé statique 8 à paroi élastiquement compressible.  4. Cable gland according to claim 1 characterized in that it is associated with an elongated static element 8 with an elastically compressible wall.
FR8410603A 1984-07-04 1984-07-04 FIRE PROTECTION Expired FR2567230B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8410603A FR2567230B1 (en) 1984-07-04 1984-07-04 FIRE PROTECTION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8410603A FR2567230B1 (en) 1984-07-04 1984-07-04 FIRE PROTECTION

Publications (2)

Publication Number Publication Date
FR2567230A1 true FR2567230A1 (en) 1986-01-10
FR2567230B1 FR2567230B1 (en) 1989-01-27

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ID=9305786

Family Applications (1)

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FR8410603A Expired FR2567230B1 (en) 1984-07-04 1984-07-04 FIRE PROTECTION

Country Status (1)

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FR (1) FR2567230B1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019106412A1 (en) * 2017-11-30 2019-06-06 Kioto Clear Energy, S.A. De C.V. Corrugated pipe seal
WO2019206547A1 (en) * 2018-04-26 2019-10-31 Rubinetterie Bresciane Bonomi S.P.A. Sealing joint for passing through walls and combination of the joint and of a duct
EP3722558A1 (en) * 2019-03-26 2020-10-14 United Technologies Corporation Egress seal fitting

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7017481A (en) * 1981-05-06 1982-11-11 Westward Investments Limited Cable gland

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU7017481A (en) * 1981-05-06 1982-11-11 Westward Investments Limited Cable gland

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019106412A1 (en) * 2017-11-30 2019-06-06 Kioto Clear Energy, S.A. De C.V. Corrugated pipe seal
WO2019206547A1 (en) * 2018-04-26 2019-10-31 Rubinetterie Bresciane Bonomi S.P.A. Sealing joint for passing through walls and combination of the joint and of a duct
EP3722558A1 (en) * 2019-03-26 2020-10-14 United Technologies Corporation Egress seal fitting
US11070041B2 (en) 2019-03-26 2021-07-20 Raytheon Technologies Corporation Egress seal fitting

Also Published As

Publication number Publication date
FR2567230B1 (en) 1989-01-27

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