DE1886361U - SEALING RING FOR TUBE FITTINGS. - Google Patents

Description

IA.783838 ^ -5 / 1263

DR.FRITZWALTBR DIPL.-ING.BRNICKE

PATENT LAWYERS

ΤΕΙΪΓΟΝ 88 * 4 ΤΓΟ 7815 AUGSBURG

.: TECHNIKRAT ATJQ-SBTTRe TTLR IC H S PLATZ 12

DATE: FILE -_

CBITXB ZIXIHItEOT

„Τ ρ si XY ? Fo 1 Ψ ^ t * ej fi'h 0> i fl If fr & 1 P ¹ ρ Inn T ¹

Sealing ring for lofarTersefa-raubimges

■ The "Brfiöduög - refers to a. Sealing ring - 'made of plastically deformable! But -elastic properties possessing metal with'conical;' bevelled end faces on which the screwing parts with Lindesian an annular e-edge act when tightening and a targeted plastic deformation of the sealing ring material he-ryorru-fenp '.'- ■ _' ■

The special effect of this object is that when the union nut is screwed on, the kink edge first penetrates the surface of the conically bevelled sealing ring and causes plastic deformation of the sealing ring material there. This deformation is not left to its own devices, but is purposefully displaced into a conically tapering gap between the union nut and the pipe surface, so that the material experiences a radial contraction evenly distributed over the circumference collar-like ER · furtherance of which presents itself as an imprint of the pressure surfaces of the nut or the middle Verschraubungsteiles (Üfeuptstück) "In this case the -Mittelbereich," sealing ring Spiel.gegenüber the Rohrober- ^chew: area have · Wesentlich.ist, that-- At the sealing points an intensive adhesive bond with the chrome surface is created5 which at the same time has the effect of shearing -'- aoaexi. "This function is - essential for the 'firm holding of the sealed pipe in the screw connection around the seal ünbeeinflußbar against Stöbe and vibration -to mow-n.- T his © ibschergosea -besitzen a very active günstig® ung, .if, the'-slaterial 'of the seal-'tui'igsrisges is plastically deformable but after- '.- ■ -

subsequent deformation again with elastic properties is provided *

The consequence of this sealing is an extraordinarily high compressive strength, so that maa is able _{to reach the market with at least five} drill roughening with at least tier «= up to five times the security.

However, practical experience has shown that with regard to the compressive strength that can be achieved, fluctuations in the compressive strength occur from time to time. Furthermore, with some forms of construction there was the danger that when the "union nut" was tightened, the sealing ring would twist during its plastic deformation, so that, as a result of the adhesive bond that was formed between the sealing ring and the bore, the pipe was ultimately also twisted. participated. Strangely, these manifestations could not be foreseen and controlled, read was able to compare numerous pipe fittings from the same production series and found that most of the pipe fittings did not show this turning of the pipe, whereas aisig ©. 'These fittings had this disadvantage ... . It was @e in principle not possible _r differences between - determine custody Ib of 'effect' distinctive tube fittings.

The invention is now based on the task of avoiding twisting of the sealing ring and the pipe to be sealed through the special shaping of the screwing waä sealing parts, in order to increase the compressive strength of the screwing and above all else on the other hand, this compressive strength with allan manufactured screw connections. to be maintained with certainty »

The invention consists in "that the mating surfaces of the" sealing ring and the screw connection parts in the area of the main body are larger than the areas of the union nut, the latter being treated with relbungs «reducing agents _$ for example cad-» miert ssiE fcsaa «

By öies © special Flächanausbildung succeeds bb _v that the friction between the sealing ring and HauptkUrpe is greater tey as swisehea DiGütusgsring and Überwurfmut. "In consequence of this frictional difference is the DiübtuEgsriQg trots represents Yerärehimg of-Überwurfauttor in its position., So that it is compressed only in the longitudinal direction and in the area of the inclined frontal face it becomes plastically ves ^ fonat. If the friction difference is large due to the different spatial plate pressure on both end faces of the sealing ring

& "

are enough, no additional measures to reduce friction need to be taken in the area of the union nut ), decrease m *.

A particularly advantageous embodiment of the charge consists in that the sealing ring is designed in the manner of a truncated cone on one end face and at least one groove-like surface in each of the two truncated cones. Recess is provided «Such a truncated cone surface receives measure, for example, by aaass an aa both end faces. conically bevelled? Sealing ring on one of these surfaces, as far as "is turned flat ,; that on this .front side a flat end face and.in addition then an inclined face is present. At. this end face-thus-forms-the bore wall of the sealing ring with the outer sloping 'face-. do not face an acute angle, it goes from this one Borehole wall first of all the plan ©. Face off.

Here it recommends. in particular that the cord-like surface of the truncated cone surfaces is approximately the same

- 5th

Inclination angle like the conical © contact surface of the Main body, -feesitgfi- to the day- sealing ring aage- ■ is pressed *

It also proves to be advantageous that the apex of the recess provided in the planar face lies in a circular line, which has approximately the same radius as the circular line passing through the kink of a screw connection part. In this design, the axial flow of force in the sealing ring is distributed evenly over the edges formed by the recesses on the flat end face, or narrow ring surfaces "so that these edges fit perfectly and evenly against the sealing surfaces of the main body" the recesses a kind of labyrinth seal Qit of the effect; that the medium in the pipe that is under pressure is relaxed, provided that it succeeds in passing through the outer sealing shear zone. thereby no © possibility is given »; to reach hindurph through oils outer shear zones ,: ■ ·. ■ _. ·, ■.

Another advantage of the invention results in siufa invent « according to daäurcb, öass ii -regions 'der-, truncated cone »' like developed end face öes Dichtungsi'ir ^ es i.i.asinaea gstießcts mlstaFtig © fsifdiefcuag lit- f. ·? II: £ ;; = ■ · - "

cut mainly triangular profile is provided ο This thickening is see yöf of the end face of the pipe to be sealed Stop for the pipe and prevent the end face from ■ before the Kohres with the main body in appeal KoEimes can lead to unbearable states of tension would »The special © trofiling of the thickening / c; ie through double-sided conical drilling of the sealing insert can be formed, -has the advantage that tolerances is -pipe diameter no Sinfluence on the stop, own and "-. Ladders ία * that the outer © front edge-B ci © r ·.

on meets' and thus -by the .hohe'specific © FIIc; h © pressung eioa susätaiiche-. lbc.icöiüagsst@ll Brille 'bild @ t _t .

The teaching of the Brfiaauag can only be fulfilled through the cone-shaped formation of one end face of the sealing line, so that some means can also be used to increase the effect of the sealing ring there is greater friction in relation to the main body than in relation to ü @ t wurfiQutter "besiisto Flir .diassn; -, Zweck can recommend ee \ sicö, for example, as- Haupttörpar apart from the kink-. kante Eoeh more - H @ b @ aka "at @ ß. vorsus-3lieia _i --an deaen'from the beginning the face of a sealing ring aaliegoa

target. There is also the option of the front face of the sealing ring to be provided with such edges, so that the contact surface between the sealing ring and the main body gets bigger «

These and other features of the invention result .sich from the. Drawing. In ^ ifar the invention is schematic!] and shown for example, and show it?

Fig. 1: a schematic longitudinal section through .a screwed pipe connection ₅ in which the main body .with

several ring edges. is provided, Fig. 2% a schematic partial longitudinal section cliirct '© ine' variant "of the pipe screw with <§Ib © q sealing ring, which" on one end face '". cone""

is formed like a truncated and '"Pig" 3s a scbematisohen, partial longitudinal section through a tube fitting ,, in eggs DichtuDgsring exactly Pig _e 2-.sur seal as a shock ring .is used. "-.

In the implementation example 1 of the P | g. 1 is * with 1'spharaai the part of the deformation iss Diehtungeringes 3 partiiefcaeaäi area of the main body ·. and .with 2 a union nut shownp The. Sealing ring. 5 surrounds the Eaä © fles "ab-

closing tube 4 _S with a play between »Ma * '* :! and pipe 4 kanne be present The end faces "OK blocks sealing Ungar Inge 3 are conically bevelled. The Boimi £ .gs wall of the ring 3 may be as provided one or both front sides with grooves 9 or other protrusions and depressions * which serve to ₉ the Hg fiver bund to favor the Bohr 4 o ·. ■.

The main body 1 and the union nut 2 have j © a so-called kink 5, through which the contact surfaces these two screwing parts in kossisefce Partial areas 6 ® »d 7 are subdivided.« Di © Inclination-wiE.-kel of these surfaces aind eo 'susgebiläet that when' put on the screwing parts sueret the conical Kink edge 5 on the conical face 10 äes Mch * - tungsr Inges meets "

In practice, a © version has proven its worth. in which the leigUQgswiiikel äar! "eil area 6 was about -10 that of the sub-area 7 etia 20 degrees and that of the end face 10 of the sealing ring 3 was about 15 H »

The effect of the Äusfiiarungsform governed according to Figure _t. 1 exists. in that bite screwing on the union nut £ oils

Corrugated edge 5 into the lower region represents 1Ö end face of the sealing ring 3 while penetrating eim plastic deformation of the sealing ring material s. causes. " As the union nut 2 continues to be tightened, the sealing ring material displaced by the edge 5 is jigged into the conically tapering housing 1t cast cover nut 2 and pipe surface 4, after the screwing has been completed, the deformed sealing ring 3 has a collar-shaped collar on at least one end face. Ggstall, which is an imprint of the two partial areas S ₉ ? represents "In Hingrauis 11- the-displaced® -Dish""tungsringmaisrial a radial contraction, which leads to the formation of fixed shear-offs on the - surface 4" The same effect is present in the area of the main body 1 "'

das- Verdrebe-n'.des.pichiuggsriages 3 and given-

if the Ηο! ^ && ^: -4 - "- belsrfofteliei ^ the Überwurfiut-ΦβΓ -2 to avoid ^" Is © rf isausgsgssaäB irorgesefaenj that öi © Beibaog between the sealing ring 3-.and lanptkSrper 1 ser als zwisshsn Diöbtiingsriag 3 and Üheieri 2 is ο this task we: rä in the Siss® des LusfüteuögsbeispiS 'les geisäß FIg ₀ t solved by »that the. Main body 1 next to the kink edge 5 plus additional life edges 5 ^! '-' possesses, which in the ilafang sii on egg sloping end face 10

of the sealing ring 3 should be in contact. .Far den FaI *. _The invention seeks that this area enlargement in the area of the main body 1 is insufficient. The friction between the union nut 2 and the sealing ring is tightened ₄ An advantageous possibility for this purpose is given by at least the pressing surfaces 6, 7 of the union nut 2 being provided with a coating which reduces the numbering of such a coating for example, can Gadmieren ^ be formed? also has it see as. proved to be advantageous to grease the 'molding surfaces 6,7 dar union nut 2 before tightening '. ■ ■

The task on which the invention is based can have a particularly advantageous effect through a particular shape of the sealing ring. 3 'in the sense of Figs. 2 and 3 This sealing ring 5 * -b @ sits -on the string in contact with the union nut 2-the same or similar design as is the embodiment of Fig. 1, in Areas of the main body. 1, however, the end face of the sealing ring 3 ^{1 is} conical shaped »'The invention sees' here the conical © end face. 12 and. the plan® front face 14 on the other side? $ obei additional in this area. 12 nid "14 recesses 13 and 15 are provided, .'- which the original-'surfaces. 12, 14 in several, ring-shaped fil- = ·"

Dissolve surfaces »Here, ee proves to be advantageous if the conical surface 12 has approximately the same angle of solution as the partial surface 7 of the main body 1» In this case, it is ensured that the Bei ™. The gap between sealing ring 3 * and main body 1 is much greater than that between sealing ring 3 ^S and union nut 2 »The additional recesses 13 and 15 have the effect of a labyrinth. Should the medium conducted under pressure in the pipe 4 break through the inner sealing zone, it will be in the areas of the recesses 13 or ". 15 so'-throttled that it cannot get through the outer separation zone.

The special advantage of nasty sealing rings - 3 ^! beste'at "still in it" that this both sls Rphrverschraubungsdichtungsring be used as a shock ring, '' fie in particular aas Figo 3 is apparent _s, can the plan © face 14 of the. sealing ring 3 'to Abdickten de? plenums end face 19 of the Apparatus connecting part 13 can be used without a change in shape "of the sealing ring 3 ^{1" is} necessary. In this case, the recess 15 acts as a labyrinth * Furthermore, it has proven to be advantageous * to form the kinked edge 5 of the union nut 2 approximately in the same Hadius ^ ie ctea Seheitel of the recess 15 «Ba from the kinked edge 5 of the

Union nut 2 is the center of gravity of the axial thrust, it is understandable: .that -in an .ösr-- '. like Badius dimensioning * this-axial thrust '■ * -. sioh evenly on the surfaces. 14. 'to both: -Seiten'de? Recess 15 Divides. As a result, both surfaces lie 14 evenly on the surface 19 of the app'par'ate part 18-: to »■

In economic. Regarding, there is the special gate part of the formation of the sealing ring. 3 'in' tas stock assortment Does all. · -Möglichen Verschraubung'sartsn to 'limit a minimum m. ! fen, can 'of the same. Sealing ring both for screwdriving ale .. also for butt screwing ^- 'Teroming. Relevant for:? '' ■ the size and shape of the ■ sealing ring 5 ^{Ψ is} only one diameter of the boiire to be sealed 4-

According to the exemplary embodiment in FIGS. 2 and 3, the invention also provides that areas of the frustoconical end face of the sealing ring 3 "have an inward-going bead starter 16, -the In the lätgasofanitt at the front bmlleh'eindreckiges profile basitstc "This profile of the thickening. 16 can. for example. be. formed. ₉ that the ■ sealing ring is bent conically from two sides. _e

Until the task "of this feräickiiag 16 consists in it, as a 'stop for the front surface of the ahsuäichbenden Hobr ^ s 4 sä üieLea and the' impact of the sobratira surface ihi Ί4-as well as-of the recess - 15 convey a larger lläsliesu., So that the Dichtusg'sri-üg, as. This place not recommended? Irch Finally 'testaht. An i @ i = -' external effect öer ¥ erdick.uGg_i6 · Iaria _s that -the "" outer® end face of the pipe -4 sufl the inclined end face -17: 1er Veräiflka3g.16- meets and.-on algae eggs specific, specific plate pressing-an additional ifeflöhtiisg point formed Ubsröiea - fiieasfi äi-3 koEisefaea Plächea 17 nad IS c «ss Dislituügsriag & s 3 ^{: i} der'Zentrierung 'flee -Bieh- ■ jungsringses' which at BöhrTersohraubaüg ßia @ large © .. *. Dsd © i'.tun.-3 5: ukcffläit _o ■ '- ■ ■■'. ·. ■ '■

Claims (5)

dr. fritz walter dipl, -ing.ernicb: e PATENTANWiIXE tTND 7 8:15. AUGSBURG T] äM & E.: TECHKIKHATATjeSBtrEe TTE1RIC HSPLATZ 12 DATE: oh.utzans'P-rücbe. 1) Sealing ring made of plastically deformable, but elastic properties, metal with a conical beveled face on which the screw. Exercise parts with at least one ring-shaped kink - ^: edge-e with aiawirfeeu uad elae- targeted plastic .Vsrforaung of the sealing ring material - call .Qii ,. thereby gek e'n η draws, -that . eofMsandertende surfaces 'of the sealing ring' and ■ of the screwing parts in the Berelctie. of the main body ^: ' ■ is larger than in the area of the ·. Union nut _R where the latter can be cadmized with friction-reducing agents -.- l »'^. 2) Sealing ring naph 'claim 1, thereby g e ■■ k e η η « draws t ₅ ; since the sealing ring is in a forehead« Side truncated cone-like. educated and everyone is, cer ..; both truncated cone surfaces at least grooved " like recess is provided «i 3) sealing ring according to claim 2, characterized ge k en η draws that the conical surface © the-cone-i obtuse surfaces have about the same angle of inclination as the conical.'Aapreßfiäohe des main body "has ,,; aa ■. '. which the sealing ring is pressed on. . . ■■ ".." ■■ Sealing ring according to claim 2 or 3 # characterized in that: gek e η η ζ ei c. hn -e -t that OCE apex of the in; of the planar end face provided recess.ia "■ a circular line; lies, which approximately the same-Hadius.: again through the- Kaickkoate of a YerschraubuBgs.« * " ^: - part: going circular line-'possesses«; ■. '..' .., ..- 5) Sealing ring according to "Aü & prueh 1 or consequently," .- thereby - _: geke'QD ζ eic lia e . $ ■ -, äai'iffi areas of the ke- \. ^: 'gel stump-like designa the end face of the sealing ring an inward-going, bead-like thickening _; with in the longitudinal section, mainly ^; triangular Prof ^il:. vorgesehen'ist ''_■:;"- ■ '.-".' ■ _: - -6) Sealing ring sack claim 1 _r "thereby g * e-.k * eaa: * = · .ι ' .draws that on the main body, apart from the kink edge, further / secondary sections are provided, against which the end face of the sealing ring should rest from the start. Dr ₀ -F.'Walter tind'D-ipl '.- Ing.' Ernlöke
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