HUE028902T2 - Csatlakozó extrém hideg cseppfolyósított közegekhez - Google Patents

Description

Congling for extremely eoid Ifonchnd tnedä«

Description

The invention retótés fo a ebupiog for extremely cold tiipeifod media tor connecting vaeata-insniatsd lines vitt a cotm; kg; socket andá coupling;plug, each of which are: equipped with a check valve which, in the uncoupled state?;, seals a ihroughilow opening arranged in the: respective coupling part against ingress of ant bient air. bat w hich automat. lea i iv opens this opening upon connection.

Couplings lor connecting lines fat -extremely «eld iiqneiedmedla are known in the apt;, Coupl togs of this kind are particularly used when fixed tank, installations containing cryogenic madia are refilled from a tanker vehicle. SS 4:,335,,747 At describes a: coupling: with :a conplihg plug and· a coupling: sbeket which are each equipped with: frbäh cock; arranged on thb labe Ä and are connected to one: Mother by means sf bolts, The coupling action in this msû takes place in two working steps: outward; sealing god connection of the throogkffow devices, la this case, however, separate shut-off valves are required tor the thttntghfoow Sines. In addition to this, the bail cocks are not: vacuum-fosaiated anti cryogenic fluid which escapes during onconpilug causes the Mii cocks to frees». Couplings designed according to ô similar principle to US 4,335,747 are those deseriised in DE 41 04 711 AS and DE 44 If $13 Ai,

The: subject matter of DE 115 U Í2Í €1 is a coupling for extremely cold liquefied media In which vacuum-insulated: line ends arc connected to one another via a coupling plug and a coupling socket. TSie liae ends have axially displaceable sealing means on their thee sides which are each displaced by a spring when the coupling is separated into a position in which they· seal the respective line end against the ingress of ant blent air. When the: coupling ping Is inserted into the coupling socket, the sealing means are automatically displaced spirtst fo© Spec of the spring Into their respective opening position, in which they free a flow path to the other eoup! in g part in each case, wherein the flow paths connected to one another are outwardly sshied:, do order to create a permanent connection, the coupling parts are screwed by means: of a untot) nut. With this subject matter, king of the line ends in the uncoupled state is avoided in just the same way as forog of the coupling during operation.

Documents PS 40OiS/O27hh3f ΛΙ hod PS 7 254 112 Bi disclose devices according to the preamble of Claim 1.

The problem: addressed by the invention is therefore that of creating a coupling for cryogénie media which offers effective protection against the breakaway of the line and at the same time allows quick iuehrefiliiog.

This; gfobfsih Is solved aeebrdfog to: the htven tipp with s: coupling having the features: indicated hr Claim 1, Advantageous de velopments of the: in verdien ore: specified in the dependent: skims.

The forward; and; rear section of the Coupling socket are Obniigured in such h: thshper that they are separated: from: one another Of a predefined tensile stress, as a. result of which the check valves in the couphng socket and; coupling plug automatically move into their respective closing position. The uneoah'Olled omílow <ff cryopiMc: .medium, is thene&amp;f effectively prevsasM. Tbs teshöM 'value of the: ttmslle sfess, above: wMds the fámmá section separates normally -$xm· ft« arear seeüo» sofifee coupling socket, is selected .aseerálng. to tbs circumstances is ibis case; in particular,: it mast "fee lower than és tesuúle stress of fee ©fear compostants of the coupling: or tire liste eosmeeted thereto, ihat: soffidetálf large to fee able to withstand the customary toasts occurring during « rtoroiul s-etillmp ps-oeass. The coupling according to the iwventiosf is particularly suitable far the production of a flow connection: between two: Mîtes for 1 spa Id nitrogen or &amp;? another extremely cold litpefisd gas, suchas liquefied Inert gas or statural gas, tor example. Particularly suitably, the coupling aecofohtg to the inventirm can he used as a quick-action coupling far the fuei-reSIMug of a reftigerated vehicle equipped with a storage container fór an extremely cold iiquefied men non front: a fixed storage tank, since its simple design which ostiy exhsfens lew (low resistance allows a quick stud uncomplicated connection of the lines, as well as rapid fisul* refilling, mod epsmequently offers a high degree of proteotiost apfost pf erypgeafo liqt3ld. A permanent magnet convoys a holding force IP a corresponding: fortomagnerie region of the otfeor eouplmg section,: this is a Section made sufsstantlally of iron, for example, or, for its part, a pertnauent magnet. The pemumetst magnet sob fee ferromagnetic region eorresportdlng thereto may each extend fet a ring shape shoot fee actual coupling regloss, for example, or a plurality ofperfoaemh rnrupets may he arranged at uniform angle intervals.

The means for connecting; the forward section of the cooping socket to the cooping plug preferably or a screw connection, forexampfe a smios* ont, which is tightened on a thread iffed to feu outside of the couping plug or fee forward section, do this way, fee forward section of fee cooping socket and coupling ping remain securely connected fo one: another, even after fee rear section has been separated.

The cheek valve of the conpiing plug and the check: valve of fee cooping socket are 1st each case preferably equipped with an axially displaceable closure: body, for example in the fotfe of a plafo of a :hais which cast he: displaced against fee effect of a return force from a cfosM position, sealing off fee iferonghflow openhtg of the respective coupling part, into: an open state, feeing fee through flow opening. In this case, fee closure elements are configured such feat when the cnhplmg parts ate connected they displace one another into their respeetlve opening: state apd ht this casé Iree a flow path between the lines which arc connected to one another fey the conpiing, ßfe esfolfasl, When fee coupling socket is separated from the cooping plug or when the rear section is separated irons fee forward seetkm of the coupling socket, the closure bodies move automatically info their respective closed position and thereby close off fee through flow openings of both eodplmg parts.

It is particularly advantageous for $ sealing element, for example a sealing ring, to fee arranged; m fee forward section and/or on the rear feetipp offee cpfeplmg: socket, which sealing element guarantees: the gas-fight eonneetiost of fee coupling epntrection. The: sealing ring is preferably of fompcrattup-reslslatn design and made of PTf£, for example, :&amp;n mtmplMf. inyerttiou is to be mtgistined in greater with. the %φ: of tim: drawings. Hie figures show is schematic views.: so longitudinal section ist gfefe case: J%, ! : the constituent parts of a eoupHng socket of a coupling according: |o the inyastldh: aeimrated front one smother, M%> 2: the ässetnbled congiiug sodiet hod the coupling plug of the coupling from· Figs ï &amp; &amp;? uncoupled státói:

Fig. 5: the coupling írom Fig. 1 sad Fig. 2 m the closed state

Fig,4: the coopting fe»Ftp. 1 to 3 following an eves« triggering the breakaway protection.

The coupling shown in Figs. I to 4 eonlignred as a quick-action coupling has s coupling socket {# with a forward section i i sod a rear section 12 cenoesiahle thereto. The rear sect too 12 equipped with S connection piece 13 tor connecting to a its® sot: shown here tor a cryogenic medium, for example a line tor liquid nitrogen, has a thermaiy weil«ppiatedt for example vaMpta-Msoiated?: housing 14* hf Ék Inside whereof a check valve IS is arraapd. The check valve 15 comprises a closure body 16 with a closing plats 12 which, when the coupling is open, closes an outlet 1¾ is the rear section 12 Mctmnally «oder the action of a pressure spring 21 ht a gas-tight maapn. The pressure spring 21 extends radially outwards on the closure hotly 16 between the dosing plate 12 and a valve seat 10 mounted securely in the inside of the bossing 14s which yttlys; seat has a central boro 211¾ through which Ée closure body 16 is movahiy conducted in an skiafly limited manner. On the face side of the housing 14 lying opposite the connection piece 1J is ípeatpd afiaoge 22 for ephnectlog to the forward section I f which Is produced Iron; a lerromsgnetic materiül;,: for example from iron; or a material with a high Iron content, in lise exemplary embodiment.

The forward section 11 of the eoupllng socket 18 comprises a housing 24 likewise equipped with thermal; Insulation which has a sealing: face: 2d equipped with a FIFE sealing ring 25 on its end facing the rear section: 12. The sealing face: 26 comprises a ferromagnetic material, ibr example iron or a material made predominantly of iron, ft is configured integrally with the housing 24 or fastened thereto by means of suitable connection means, for example by adhesion. Welding or screw-fastening, Á ring-shaped permanent magnet 27 is mounted on the scaling face which, on account of Its magnetic form Is fixed os the rear section 26. On the front part of the forward section 11 are arranged connecting elements for the secure feat separable connection to the coupling plug 30 of the coupling; m the exemplary embodiment, these are slots 2¾ 28 In a bayonet connection, A fnrthcr sealing; ring 31 made of F'fFE arranged m the inside of the forward section If is used to guarantee gas tightness fallowing the production Of a conn cellos to the eoppllhg ping 3d,

The assembled coupling: socket 10 Is shown m E!g, 3. *f$g fear potion || and forward sestiOn 1,1 are securely eppsteeted to one aaotftet by the three effect df the permanent magnet 23 on the: ferromagnetic flange 22 and thé sealing ihee 26 and can only he separated ffom one nuothef agái« by a tensile stress exceeding the magnet le three of the permanent magnet. The sealing ring 25 pressed between the forward section 1 1 and the rear section 12 ensures in this case that the connection is gas-fight, father than a magnetic connection, any other eomfeotiö® is: also likewise conceivable β« ft« hwniowolt of the invention which releases the connection between the rear section 12 and the forward section 11, for msmpte a hosded «onaoetistï, whsa &amp; deined, predetermined tensile stress is akiied.

The coupling ping <(i likewise shown in Fig. 2 comprises a thermally insulate« bousing 32 which is e^hppeb with stmls 3¾. 34 tó produce a seebm bid separable: pl«g%m4aii®|; connect»®: with lie: coupling socket 10, said studs corresponding » the slots 28, 29, Uadi as m the rear section 1:2 of the: coupling socket 1,0. a check valve 36 is arranged in the inside of the coupling plag; 3 b, The cheek valve 35 is similar in design to the cheek valve 15 of the coupling socket 10 and comprises a closure: body M with a closing plate 3? which in the state shown in Fig, 2 fictionally closes a tisronghflow opening 33 of Ute coupling plug JO ttndef the action of a pressure: sprlag 41 In a gasvtlgbi manner, The pressure speing 41 exfsads radially outwards m Été closure body between the closing plate 37 and a valve seat 34 ssdohtod secarsly I» the; housing 33 which is ««pipped with a central bore 4Ö, ihrpagh which the closure body is movably conducted in an axially limited manner. Furthermore, she housing 32 has a connection piece 43 fereooocelieg to a line not shown here for a cryogenic- medium.

The coup! trig is shown in Fig, 3 in the normally peopled state, ip this slate, the studs 33 , 34 of the hsyooat cosoeetioo: ard engaged with the corresponding 4*ots 28, 29 and in this way produce a secure connection between the coupling parts 10. 30. Other ways of applying force for the fitting together and connection of the coupling socket and coupling plug likewise also fell within the framework of the invention such as, for example:, the connection by »cans of a union out described in greater detail In DE 195 14 334 £: S > #0 their sides feeing one another, the closing plates 17, 37 are esptipped with tappets 45, 46 which are pressed agdlhot Oh«: another during the itting together of the coupling socket I# and the coupling iphtg: 39 and In this: case, as indicated fey arrows in Fig. 3, the closure bodies 16, 34 am displaced1 against the action of the spring force: of the gresstife springs 21:, 41 Into their respective opening: slate, in this ease:, in the region of the liwooghtey openings ;i|, 3.8 n Slow path Is shnuhsneonsly opened feetween the loner spaces of the coupling socket 10 atid the coupling ping 30, lb order to create a flow connection in the: direction of the connection pieces 13, 43. the valve seats 19, 39 arranged in the inside: pf the coupling: socket 10 end coupling ping 34 are each Ospippsd with ihrooghlldw openings 49;, 59· 1:0. the: region of She connection, the housing 32 of the coupling plug and the housing 24 of the forward section: 11 of the coupling socket 10 overlap one another radially,: The thermally insulated enthodimenf of the housing; 24, 32, preferably fey feeshs of a vacuum ring chafeher, effectively prevents Icing of the; coupling during the thro ughflow of cryogenic medium in this case, F|g, 4 shows a coupling following an evest triggering the breakaway protection. An “event triggering É6 breakaway protection” lit this ease refers to: an: event In which an mM fehsil«: Stress acting on the coupling is greater than the retaining feree of the germahbtbfeagmtt 27 Pd the flange 22. la this ease,, the rear section 12 of the coupling socket 1(1 is separated from the forward seeliea 11 of the coupling socket 10 which is still securely connected Id the coupling plug 39, In this cose, the confect between the tappets 45, 46 of the closure bodies 16, 3:6 of the check valve !5, 35 Is fest usd life check valves Id, 35: move; aulomatically into their eloped position: imbef the: effect: of the pressor® springs 31, 41 |as indicated by arrows isi Fig. 4); the flow connection 'bstwse». í&amp;e rear section 12 of fit® coupling soeket .10 andthe coupling plug 30 H closed In this way* when this kist! of event oceans* the coupling or part of like Use is effectively prevented fro® breaking and là« cryogenic medians being transported through tfes Mse escaping into tire mvmnmmt in as uncontrolled manner, yMsia&amp;siis 10, Coupling socket 11, Forward section 12, 1 ear section 13, Connection piece 14, Housing- (of the rear section) I S. Check va ive 36. Closure bodies !?. Closing plate 3 iS, Ost let 1$, Valve seat 20. Central bore '21., Pressure spring 22. Hange 23. 24. Mossing; (of the forward section) 25. Sealing ring 26. Sealing face 23. Perraaseaf sgagnet 21 Slot: 23, Slot 33, Coupling ping 31, Scaling ring 32, Housing Cof the coupling plug) 33, Stud 34, Stud 35, Cheek valve 36, Closure bodies 37, Closing plate 31 Throngbflow opening 39, Valve seat: 4Ô, Central bore 4L Pressure spring