DK158276B

DK158276B - SLIDE COMPENSATOR FOR A PIPE PIPE

Info

Publication number: DK158276B
Application number: DK258883A
Authority: DK
Inventors: Ilpo Suominen
Original assignee: Safematic Ltd Oy
Priority date: 1983-06-07
Filing date: 1983-06-07
Publication date: 1990-04-23
Also published as: DK258883D0; DK258883A

Description

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DK 158276 BDK 158276 B

Opfindelsen angår en glidekompensator til en rørledning, og som omfatter to rørformede udligningselementer, der er forsynet med fastgørelsesorganer til at fastgøre udligningselementerne på indbyrdes aksialt bevægelige 5 rørkanaldele i rørledninger, og en mellem udlignings- elementerne liggende ringformet glidepakning til at tilvejebringe tætning mellem elementerne, samt spænde-organer til at påføre en til glide pakningen hørende pakningsring en sådan radialkraft, at mindst ét område 10 på pakningsringen trykkes ind mod det ene udlignings- element .BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a sliding compensator for a pipeline comprising two tubular equalizing elements provided with fasteners for securing the equalizing elements to mutually axially movable tubular portions of pipelines, and an annular sliding gasket between the equalizing elements and clamping means for applying a radial force to a sliding gasket associated with the gasket such that at least one region 10 of the gasket ring is pressed against the one equalizing element.

I rørkanalsystemer, hvor aksial bevægelse ofte forekommer, kræver almindelige, sammentrykkelige bælgudligningsanordninger stor monteringsplads. Hvis rørkanalsystemet 15 planeres således, at den radiale bevægelse er lille, kan den aksiale bevægelse kompenseres med en såkaldt glidekompensator. Man har tidligere i sådanne kompensatorer anvendt sædvanlige, flettede pakninger, som er blevet anordnet i en aksialt spændbar pakningslomme. Problemet 20 i disse konstruktioner har været, at det er svært med aksial spænding at opnå et, hvad tætheden angår, tilstrækkeligt radialt tryk i pakningen. Selv om man med en massiv spændeflange og en pakningslomme skulle opnå en tilstrækkelig tæthed, tillader en sådan konstruktion 25 ingen radial bevægelse.In duct systems where axial movement often occurs, common compressible bellows equalizers require large mounting space. If the duct system 15 is designed such that the radial movement is small, the axial movement can be compensated with a so-called sliding compensator. Previously, such compensators have used conventional braided gaskets which have been arranged in an axially tensionable gasket pocket. The problem 20 in these designs has been that it is difficult with axial tension to obtain a sufficiently radial pressure in the gasket in terms of density. Although with a massive clamping flange and a gasket pocket sufficient density should be obtained, such a construction 25 does not allow radial movement.

Fra patentskriftet US 3 455 582 kendes desuden et koblingsorgan til .sammenkobling af to rørender. I dette tilfælde er der på hver af rørenderne fastsvejst en flange, og disse flanger holdes i indbyrdes afstand af et stift 30 afstandsstykke og sammenlåses med dette ved hjælp af et stift ydre rørstykke med to om udadvendende vulster på flangerne og afstandsstykket sluttende U-formede ring-dele. Denne konstruktion er imidlertid på det nærmeste fuldstændig stiv og tillader ingen radial eller aksial 35 bevægelse mellem rørenderne, bortset fra en eventuelFrom the patent US 3,455,582 a coupling means for connecting two pipe ends is also known. In this case, a flange is welded to each of the pipe ends and these flanges are spaced apart by a rigid 30 spacer and interlocked therewith by means of a rigid outer tube piece with two outwardly extending beads on the flanges and the spacer terminating U-shaped ring -parts. However, this construction is almost completely rigid and allows no radial or axial movement between the pipe ends except for any

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2 fleksibilitet i selve materialet.2 flexibility in the material itself.

Det er formålet med opfindelsen at anvise en glidekom-pensator af den indledningsvis nævnte art, som eliminerer ovennævnte ulemper, og som med en enkelt konstruk-5 tion bedre end hidtil kendt tillader såvel radial som aksial bevægelighed i kompensatoren, samtidigt med, at der opretholdes en tilfredsstillende tætning.SUMMARY OF THE INVENTION It is an object of the invention to provide a sliding compensator of the kind mentioned above, which eliminates the aforementioned disadvantages and which, with a single construction, allows better than radial as well as axial movement in the compensator, while maintaining a satisfactory seal.

Dette opnås ved, at glidekompensatoren ifølge opfindelsen er ejendommelig ved, at pakningsringen er fast-10 gjort på det andet udligningselement, og at det ved sit nævnte område er således radialt fleksibelt, at området med tilhørende spændeorganer følger det ene udligningselements radiale bevægelpe og det andet udligningselements radiale bevægelse. Rørledningens rør-15 ender kan herved såvel aksialt som radialt bevæge sig i betydelig grad i forhold til hinanden, uden at dette formindsker forbindelsens tæthed, da størrelsen af gli-depakningens radiale tilspænding er i alt væsentligt uafhængig af de indbyrdes bevægelser. Glidekompensato-20 ren får desuden en enkel konstruktion og bliver hurtig og nem at montere.This is achieved in that the sliding compensator according to the invention is characterized in that the packing ring is fixed to the second equalizing element and that at its said area it is radially flexible so that the area with associated clamping means follows the radial movement of one compensating element and the other. radial motion of the compensating element. The pipe ends of the conduit can hereby move axially as well as radially to a considerable extent relative to each other, without this reducing the density of the connection, since the size of the radial tension of the slip packing is substantially independent of the mutual movements. The sliding compensator 20 also has a simple construction and becomes fast and easy to install.

Opfindelsen forklares nedenfor under henvisning til tegningen, hvor fig. 1 viser en rørledning med en glidekompensator iføl-25 ge opfindelsen, fig. 2 viser skematisk i større skala, kompensatoren set fra enden, fig. 3 viser en fordelagtig udførelsesform for kompensatoren i planbillede,The invention is explained below with reference to the drawing, in which fig. 1 shows a pipeline with a sliding compensator according to the invention; FIG. Figure 2 is a schematic view on a larger scale, the compensator seen from the end; 3 shows an advantageous embodiment of the compensator in plan view,

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3 fig. 4 viser et tværsnit af kompensatoren langs linien IV-IV i fig. 3, fig. 3, 6 og 7 viser i tværsnit tre udførelsesformer for en slidring, og 5 fig. 8 viser et til fig. 4 svarende tværsnit, men i en anden udførelsesform for kompensatoren.3 FIG. 4 shows a cross section of the compensator along line IV-IV in FIG. 3, FIG. 3, 6 and 7 show in cross section three embodiments of a wear ring, and 5 fig. 8 is a view of FIG. 4, but in another embodiment of the compensator.

I tegningens fig. 1 og 2 antyder henvisningstallene 1 og 2 to ved hjælp af en glidekompensator 3 sammenkoblede rørkanaldele, som kan udføre aksiale og radiale 10 bevægelser i forhold til hinanden.In the drawing FIG. 1 and 2, reference numerals 1 and 2 indicate two tubular duct portions interconnected by a sliding compensator 3 which can perform axial and radial 10 movements relative to each other.

Kompensatoren 3 omfatter ifølge fig. 3 og 4 et første udligningselement, som dannes af et cylinderformet, indvendigt rør 4, og et andet udligningselement, som dannes af et udvendigt rør 5, som omslutter røret 4 15 koaksialt. Rørenderne har flanger 6 og 7 til fastgørel se af rørene i rørkanaldelene 1 henholdsvis 2.According to FIG. 3 and 4 are a first equalizing element formed by a cylindrical inner tube 4, and a second equalizing element formed by an outer tube 5 which coaxially surrounds the tube 4. The pipe ends have flanges 6 and 7 for attachment of the pipes in the pipe channel parts 1 and 2 respectively.

Mellem rørene dannes en ringformet slids, i hvilken en glidepakning 8 er monteret. Denne omfatter en af et cylinderformet bånd dannet slidring 9, som med sin 20 inderflade ligger an mod det indvendige rørs ydre kap pe, og af en af et cylinder formet væv dannet pakningsring 10, som med sin midterdel ligger an mod slidringens yderflade, og som ved begge endepartierne fastgøres ved hjælp af lister 11 og bolte 12 mod rørets 5 inder-25 kappe.An annular slit is formed between the tubes in which a sliding gasket 8 is mounted. This comprises a wear ring 9 formed by a cylindrical band, which with its inner surface abuts against the outer cap of the inner tube, and a sealing ring 10 formed by a cylindrical web, which with its middle part abuts against the outer surface of the wear ring. at both end portions are secured by means of strips 11 and bolts 12 to the inner 25 of the tube 5.

Pakningsringen danner med sin midterdel en U-formet pose eller rende 10a. Mod rendens bund ligger en spæn-dering 13 an, som forløber rundt om" pakningen, og som er forsynet med på ringens omkreds på afstand af hin-30 anden beliggende, fjederbelastede spændeskruer 14.The sealing ring forms with its center part a U-shaped bag or trough 10a. Against the bottom of the gutter is a tension 13 extending around the package and provided at the circumference of the ring at a distance from each other, spring-loaded tensioning screws 14.

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44

Ved ringens spændesteder findes i det ydre rør 5 åbninger 15, gennejp hvilke spændeskruerne skyder ud. Med spænderingen trykkes den i pakningsringen 10 fastgjorte slidring 9 mod det indre rør 4. De på spændeskruerne 5 anordnede fjedre 16 holder spændetrykket tilstrække ligt stort, selv når slidringens glideflade slides.At the ring tensioning points, the outer tube 5 has openings 15, reapplying which the screws extend. With the clamping ring, the wear ring 9 fixed in the sealing ring 10 is pressed against the inner tube 4. The springs 16 arranged on the clamping screws 5 hold the tensioning pressure sufficiently large even when the sliding ring of the wear ring is worn.

Når rørene bevæger sig aksialt i forhold til hinanden, sker en glidning mellem slidringen og det indre rør. Spænderingen holder slidringen aksialt på plads i for-10 hold til kanalrøret, medens ringen støttes mod åbnin gernes 15 kanter. Når rørene bevæger sig radialt i forhold til hinanden, sker bevægelsen derimod mellem slidringen og det ydre rør, medens slidringen og spænderingen følger det indre rør. Posen, som dannes i iso-15 leringsbåndet, tillader slidringens radiale bevægelse over en i fig. 4 vist strækning R fra den i figuren viste stilling.As the tubes move axially to each other, a slip occurs between the wear ring and the inner tube. The clamping ring holds the wear ring axially in place relative to the duct tube, while the ring is supported against the edges of the openings 15. On the other hand, when the tubes move radially relative to one another, the movement occurs between the wear ring and the outer tube, while the wear ring and the tension ring follow the inner tube. The pouch formed in the insulating band allows the radial movement of the wear ring over one in FIG. 4 from the position shown in the figure.

I den enkleste udførelse består pakningsringen og slid-ringen af samme vævede materiale. Pakningsringens gli-20 deflade er herved forstærket og/eller smurt. Paknings- ringen er valgt til at tætne mod trykket i det medium, som strømmer i rørledningen og til at modstå mediets indvirkning.In the simplest embodiment, the packing ring and the wear ring consist of the same woven material. The sliding surface of the packing ring is thereby reinforced and / or lubricated. The gasket is selected to seal against the pressure in the medium flowing in the pipeline and to withstand the action of the medium.

Fig. 5-7 viser separat slidringe, som består af kant-25 forstærkninger og et vævbånd 18. Som kantforstærknin- ger i slidringen 19 i fig. 5 anvendes et snoet bånd 17, i slidringen 27 i fig. 6 en valset flettet pakning 27 og i slidringen 29 i fig. 7 en tråd 37.FIG. 5-7 show separate wear rings consisting of edge reinforcements and a weaving band 18. As edge reinforcements in the wear ring 19 of FIG. 5, a twisted belt 17 is used in the wear ring 27 of FIG. 6 shows a rolled braided gasket 27 and in the wear ring 29 in FIG. 7 a thread 37.

Ved monteringen af slidringen på det indre rør, opmåles 30 først en passende mængde slidringsbånd, som derefter afkortes og vikles omkring røret, hvorefter enderne sammenføjes. Pakningsringen fastgøres i det ydre rør,When mounting the wear ring on the inner tube, a suitable amount of wear ring tape is first measured, which is then shortened and wound around the tube, after which the ends are joined. The gasket is attached to the outer tube,

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5 hvorefter røret skydes på det indre rør. Til slut spæn-\ des spænderingen for at trykke pakmingsringen mod slidringen .5 after which the tube is pushed on the inner tube. Finally, the tension ring is tightened to press the gasket ring against the wear ring.

Fig. 8 viser en glidekompensator, s:om kun afviger fra 5 den foregående udførelsesform ved, at to glidepakninger 8, 8' er arrangerede mellem rørene. Mellemrummet 20 mellem rørene kan forsynes med en liwge 21, gennem hvilken mellemrummet kan rengøres, eller et smøremiddel eller en luftart med ønsket tryk kam indføres, når et 10 højt tryk råder i rørkanalsystemet.FIG. 8 shows a sliding compensator, s: if only deviating from 5 the previous embodiment in that two sliding gaskets 8, 8 'are arranged between the tubes. The gap 20 between the pipes may be provided with a spigot 21 through which the gap can be cleaned, or a lubricant or a gas of the desired pressure comb is introduced when a high pressure prevails in the pipe duct system.

Claims

A pipeline slip compensator comprising two tubular equalizing elements (4, 5) provided with fasteners (6, 7) for securing the equalizing elements to mutually axially movable tubular portions (1, 2) of the pipeline, and an annular sliding gasket (8) lying between the equalizing elements to provide sealing between the elements, and clamping means (13, 14) for applying a gasket ring (10) to the sliding gasket (8) such that radial force such that at least one region (10a) on the packing ring (10) is pressed against one equalizing element (4), characterized in that the packing ring (10) is fixed to the second equalizing element (5) and is thus radially flexible at its said area (10a). in that the region (10a) with associated clamping means (13, 14) follows the radial movements of one equalizing element (4) and the axial movements of the other equalizing element (5).

Sliding compensator according to claim 1, characterized in that the radially flexible region (10a) of the packing ring (10) is provided with a band-shaped wear ring (9) along the side facing the equalizing element (4).

Sliding compensator according to claim 1 or 2, characterized in that the side edges of the packing ring (10) are fixed to the second equalizing element (5) and that the radially flexible region (10a) is a central region lying between these side edges. spacing from the second equalizing element (5) and forming an annular groove facing the first equalizing element (4), the inside of which abuts the outside of the wear ring (9).

A sliding compensator according to claim 1, 2 or 3, characterized in that the clamping means (13, 14) comprise a DK 158276 B clamping (13) which lies at the bottom of the flexible center region (10a) formed on the gasket ring (10). ), and provided with clamping mechanisms (14) for radially clamping the clamping ring (13).

Sliding compensator according to an electric bearing several of claims 1-4, characterized in that the tubular equalizing elements (4, 5) axially overlap with each other, that the wear ring (9), the sealing ring (10) and the tension ring (13) are arranged between the two equalizing elements. (4, 5) and extends around the first, innermost equalizing element (4), while the second, outer equalizing element (5) has at least one opening (15) for the clamping mechanisms (14) of the clamp (13).

Sliding compensator according to claim 5, characterized in that the packing ring (10) comprises two gutter-shaped flexible regions (10a, 10a ") located at axially spaced apart spaced apart sides of the ring (9, 9 ') and clamp (13, 13 ';) ..

Sliding compensator according to claim 6, characterized in that the outer equalizing element (5) has an opening (21) located between the two clamping rings (13, 13 ') leading into it between the flexible regions. (10a, 10a ') with associated wear rings (9, 9. formed compartments (20).

Sliding compensator according to one or more of claims 25 to 7, characterized in that the wear ring (9) and the packing ring (10) are formed in one of the same web piece.