SE128564C1

SE128564C1 -

Info

Publication number: SE128564C1
Authority: SE
Publication date: 1950-01-01

Description

KLASS 46 f:8/03 BESKRIVNING OFFENTLIGGJORD AV KUNGL. PATENT- OCH REGISTRERINGSVERKET BEVILJAT DEN 13 APRIL 1950 PATENTTID FRAN DEN 10 DEC. 1946 PUBLICERAT DEN 20 JUNI 19 Ans. den '/„ 1946, nr 10853/1946. Heirtill en riffling. CLASS 46 f: 8/03 DESCRIPTION PUBLISHED BY KUNGL. THE PATENT AND REGISTRATION AGENCY GRANTED ON 13 APRIL 1950 PATENT PERIOD FROM 10 DEC. 1946 PUBLISHED ON 20 JUNE 19 Ans. den '/ „1946, No. 10853/1946. Heirtill en riffling.

GEBRTMER SULZER AKTIENGESELLSCHAFT, WINTERTHUR, SCHWEIZ. GEBRTMER SULZER AKTIENGESELLSCHAFT, WINTERTHUR, SWITZERLAND.

Skovellas vid. turbomaskiner. Skovellas vid. turbomachines.

Tippfinnare: T. Gabler. Tip finder: T. Gabler.

Prioriiet begard frail den 4 maj 1946 (Schweiz). Prioriiet begard frail den 4 mai 1946 (Schweiz).

Foreliggande uppfinning har avseende pa ett skovellas vid turbomaskiner, vilkas lophjul är fiirsett med atminstone en skovelkrans, vars skovelfotter aro inforda i ett spar i skovelbararen vid atminstone ett genom en sidourtagning i sparet utbildat inforingsstalle, varvid vid skovellaset är insatt en slutskovel I skovelbararen, vilken slutskovel fasthalles genom profilerade fyllnadsstycken, som med sina profilerade delar ingripa saval i spar i slutskovelns fot som i spar i sidourtagningen. The present invention relates to a paddle shaft in turbomachines, the impellers of which are provided with at least one paddle ring, the paddle feet of which are inserted into a groove in the paddle bar at at least one insertion plate formed by a side recess in the slot. end paddle is secured by profiled filler pieces, which with their profiled parts engage the saliva in the groove in the foot of the end paddle as in the groove in the side recess.

Det har redan tidigare foreslagits att valja langden av skovellas i rotorer for turbomaskiner ett flertal ganger langden av slutskovlarnas fOtter, sã att en serie fyllnadsstycken, som endast aro nagot kortare an skovelf8tterna, kunna insattas. Vid insattandet av skovlarna hava darvid fyllnadsstyckena sammanskjutits dels i ena och dels i andra riktningen, sh att till fOljd av fyllnadsstyckenas mindre langd i forhallande till skovelfo tternas vid mitten tillracklig plats blivit fri for inforandet av de olika slutskolvarna. Efter inforandet av alla slutskovlarna hava darpa fyllnadsstyckena ater skjutits tillbaka sâ, att varje fyllnadsstycke kan fasthalla tvenne angransande skovlar utefter en del av dessas langd. I luckorna mellan fyllnadsstyckena bar man darefter insatt distansstycken, vilka fOr att sakras mot att falla ut hava deformerats. En dylik konstruktion uppvisar den oldgenheten, att rotorn till foljd av den Mrstorade inforingsoppningen hos laset forsvagats i hog grad. Dessutom an icke endast en utan flera slutskolvar utsatt for en fOrsvagning vid deras infastning. It has already been previously proposed to select the length of vanes in rotors for turbomachines several times the length of the feet of the final vanes, so that a series of filler pieces, which are only slightly shorter than the vane feet, can be inserted. During the insertion of the vanes, the filler pieces have been pushed together partly in one direction and partly in the other, so that due to the smaller length of the filler pieces in relation to the sufficiently sufficient place of the vane feet in the middle, the introduction of the various end pistons has become free. After the insertion of all the end vanes, the darpa filler pieces have been pushed back so that each filler piece can hold two adjacent vanes along a part of their length. Spacers were then inserted in the gaps between the filling pieces, which were deformed in order to be secured against falling out. Such a construction has the antiquity that the rotor has been weakened to a great extent as a result of the enlarged insertion opening of the laser. In addition, not only one but several end pistons are subjected to a weakening during their attachment.

De ovan angivna olagenheterna vid de kanda losningarna undanrojas i enlighet med fOreliggande uppfinning darigenom, aft sidourtagningens langd är nagot storre an langden av slutskovelns fot samt att sidourtagningen ãr forsedd med en extra urtagfling, vars langd endast uppgar till en del av slutskovelfotens langd och genom vilken fyllnadsstyckena var for sig kunna inforas i sidourtagningen, varefter det sista fyllnadsstycket pa lampligt satt infores och sakras vid skovelbararen. I enlighet med en modifikation av uppfinningen kan den extra urtagningen vara upptagen i slutskovelns fot. The above-mentioned disadvantages of the known solutions are eliminated in accordance with the present invention thereby, since the length of the side recess is somewhat greater than the length of the foot of the end vane and that the side recess is provided with an extra recess flap, the length of which only amounts to a part of the end vane foot. the filler pieces can each be inserted into the side recess, after which the last filler piece is suitably inserted and secured at the paddle bar. In accordance with a modification of the invention, the additional recess may be accommodated in the foot of the final vane.

Uppfinningen kommer i det foljamle att nfirmare forklaras i samband med tvenne a bifogade ritning askadliggjorda utforingsformer. Vid den fOrsta utfOringsformen (fig. 13) är den extra urtagningen anordnad i slutskovelfoten, medan urtagningen vid den andra utforingsformen (fig. 4-6) an anordnad i skovelinforingsstallets vagg. The invention will hereinafter be explained in more detail in connection with two embodiments of the embodied appended drawings. In the first embodiment (Fig. 13) the additional recess is arranged in the end vane foot, while in the second embodiment (Figs. 4-6) the recess is arranged in the cradle of the vane insertion stable.

Skovlarna 1 (fig. 1-6) aro med sina fotter 2 inforda i det rakt, cirkelformigt eller skruvformigt forlopande sparet 3 i skovelbararen, I. ex. en kapa, eller ett lophjul. Sparet 3 ãr for infOrande av skovlarna forsett med ett Ids, vilket an bildat genom en sidourtagning 4. Denna sidourtagning uppvisar en langd, som endast obetydligt overstiger sko-velfotens langd. Efter inforandet av samtliga skovlar sa nar som pa den sista insattes en slutskovel 5, vars fot 6 skiljer sig fran de ovriga shovelfotterna darigenom, att den vid den mot sidourtagningen vanda sidan Or nfigot indragen. The paddles 1 (fig. 1-6) are with their feet 2 inserted in the straight, circular or helical running groove 3 in the paddle bar, I. ex. a cutter, or a flywheel. The spar 3 is for inserting the vanes provided with an Ids, which is formed by a side recess 4. This side recess has a length which only slightly exceeds the length of the vane foot. After the insertion of all the vanes, as on the last one, a final vane 5 was inserted, the foot 6 of which differs from the other vane feet in that it is retracted at the side facing the side recess Or nfigot.

For att sakra slutskoveln i det insatta 10-get insattes i sidourtagningen till skovelinfOringsstallet ett fyllnadsstycke, vilket i skovelsparets 3 omkretsriktning dr uppdelat i fern delar 7 och 8. Delarna 7 inforas genom en extra urtagning vid inforingsstallet i den for skovlarnas inforande tjanande urtagningen i sparet. Slutligen infores slutdelen 8 i den extra urtagningen. To secure the end vane in the inserted 10-get, a filling piece was inserted in the side recess to the vane insertion stall, which in the circumferential direction of the vane pair 3 is divided into four parts 7 and 8. The parts 7 are inserted through an extra recess at the insertion stall in . Finally, the end part 8 is inserted into the additional recess.

Den extra urtagningen 9 Or vid den forsta utfOringsformen (fig. 1-3) anordnad i slutskovelns 5 fot B. Sedan samtliga delar 7 (vilka for att underlatta desammas handhavande till att btirja med kunna vara forsedda med ett forlangningsstycke 10) Oro inforda genom den extra inforingsurtag,ningen 9 i skovelinforingsoppningen, infores slutligen slutdelen 8 i den extra urtagningen 9 och sakras i detta lage med tillhjalp av ett stilt 11. Efter avlagsnandet av forlangningsstyckena 2— sakras vidare i sin tur stiftet 11 genom deformering av slutdelen 8 vid det med 12 betecknade stallet. The additional recess 9 Or in the first embodiment (Figs. 1-3) is arranged in the foot B. of the end vane 5. extra insertion recess, the opening 9 in the vane insertion opening, the end part 8 is finally inserted into the extra recess 9 and secured in this layer with the aid of a shaft 11. After the removal of the extension pieces 2, the pin 11 is further secured 12 denoted the stable.

Vid den andra utforingsformen (fig. 4-6) ar den extra urtagningen 13 upptagen sjalva skovelbararen. Sedan slutdelen 8 är inford i den extra urtagningen 13, upptages radian skovelbararen och slutdelen en i ha- daingaende, med gangor forsedd ur- harming, i vilken insattes en lasskruv 14. Efter det att forlangningarna 10 och lasskruyen avtagits i plan med skovelbararens yta, sakras lasskruven i delta lhge genom deformering, I. ex. genom kOrrislag. In the second embodiment (Figs. 4-6), the additional recess 13 is occupied by the paddle bar itself. After the end part 8 has been inserted into the additional recess 13, the radius of the paddle bar and the end part is accommodated in a hand-provided, passage-provided impregnation, into which a welding screw 14 is inserted. the welding screw is secured in the delta lhge by deformation, I. ex. by kOrrislag.

Claims

Patent claims:

1. -1. Buckets for turbocharged machines, the impellers of which are fitted with at least one paddle conveyor, the paddle feet of which are inserted into a groove in the paddle bar at at least one infeeded stall formed by a side recess in the groove, -profiled filler pieces, which with their profiled parts engage the saliva in grooves in the barrel of the final vane as in grooves in the side recess, can be drawn. if the length of the side recess is slightly greater than the length of the foot (6) of the end vane (5) and that the side recess (4) is provided with an extra recess (13), Nuy's length only tips to a part of the length of the end vane foot (6) and through which the filling pieces (7) can each be inserted into the side recess (4), after which the last filling piece (8) is inserted and secured to suitable padding at the paddle bar.

Modification of the bucket load specified in patent claim 1, characterized in that the additional recess (9) is accommodated in the barrel (6) of the final vane (5). Stockholm 15O Kbagl.Boktr.r. A, ilorstedt & Mier -560089 GENERAL STABENS LITOGR. INSTITUTION