SE129373C1

SE129373C1 -

Info

Publication number: SE129373C1
Authority: SE
Publication date: 1950-01-01

Description

Uppfinnare: P. G. Lange. Inventor: P. G. Lange.

FOreliggande uppfinning hãnför sig till skovelringar for radialturbiner eller radialkompressorer och a-vser en enkel och tillforlitlig forbindning av skovlar och ringforband. Uppfinningen kannetecknas i huvudsak av att fran skovelfotterna mot ringforbanden utskjutande delar aro forsedda med periferiellt riktade tungor, vilka aro inbojda i periferiella spar i ringforbanden till ett lasande ingrepp. The present invention relates to vane rings for radial turbines or radial compressors and provides a simple and reliable connection of vanes and ring joints. The invention is mainly characterized in that parts projecting from the paddle feet towards the ring joints are provided with circumferentially directed tongues, which are bent in peripheral grooves in the ring joints for a lasing engagement.

Uppfinningen askadliggOres pa bifogade ritning. Fig. 1 visar i axialsnitt en forbindning mellan shovel och ringforband, vilket i det foljande benamnes barring, ehuru ringfOrbandet aven kan utgoras av en frail en skiva utskjutande, ringformig del. Fig. 2 visar forbindningen i tvarsnitt efter linjen II--Iii fig. 1 och fig. 3 visar samma fOrbindning, sedd radiellt inifran. Fig. 4 och 5 visa i axialsnitt och fig. 6, 7 och 8 visa i tvarsnitt enligt fig. 2 rthgra exempel pa andra utfOringsformer. Fig. 9 visar en forbindning enligt fig. 7 eller 8, sedd radiellt inifran. The invention is shown in the accompanying drawing. Fig. 1 shows in axial section a connection between the shovel and the annular joint, which in the following is called the barring, although the annular joint can also be formed by a frail protruding annular part. Fig. 2 shows the connection in cross section along the line II - Iii in Fig. 1 and Fig. 3 shows the same connection, seen radially from the inside. Figs. 4 and 5 show in axial section and Figs. 6, 7 and 8 show in cross section according to Fig. 2 further examples of other embodiments. Fig. 9 shows a connection according to Fig. 7 or 8, seen radially from the inside.

Vid infastningen enligt fig. 1, 2 och 3 liksom vid de &riga utforandena betecknar 1 en skovel med profilerad skovelfot 2. Skoveln hr forbunden med en barring 3, som liar en mot fotprofilen svarande sparprofil. Vid inneroch ytterperiferien är skovelfoten forsedd med utskjutande delar 4, 5 med periferiellt riktade tungor 6, 7, vilka erhallits genom att spar 8, 9 upptagits i delarna 4, 5 lampligen medelst frasning. Mellan delarna 4, 5 finnes ett fOrstärkande ingrepp, bestaende av en fain foten utskjutande del 10, som ar belagen i ett spar 11 i barringen. In the fastening according to Figs. 1, 2 and 3, as in the other embodiments, 1 denotes a paddle with a profiled paddle foot 2. The paddle is connected to a bar ring 3, which has a saving profile corresponding to the foot profile. At the inner and outer periphery, the paddle foot is provided with projecting parts 4, 5 with circumferentially directed tongues 6, 7, which are obtained by receiving grooves 8, 9 in the parts 4, 5 by means of milling. Between the parts 4, 5 there is a reinforcing engagement, consisting of a fine protruding part 10, which is covered in a groove 11 in the bearing.

Vid byggandet av en skovelring enligt uppfinningen samlas skovlarna till en ring pa en fixtur, varvid sparen 8, 9 lampligen redan aro frasta. I fixturen svarvas fotprofilerna vid skovlarnas hada andar, varefter barringarna skjutas pa fotterna axiellt. Vid urtagningarna i barringen for delarna 4, 5 finnas perife riella spar 12, 13. Lasningen av skovlar och barringar vid varandra sker genom att de uppslitsade tungorna 6, 7 medelst ett pressverktyg eller dylikt bojas ned i sparen 12, 13 till ett axiellt lasande ingrepp. I fig. 1 och 2 visas tungorna nedb8jda. During the construction of a paddle ring according to the invention, the paddles are assembled into a ring on a fixture, the grooves 8, 9 being suitably already frosted. In the fixture, the foot profiles are turned by the hot spirits of the blades, after which the bar rings are pushed axially on the feet. At the recesses in the barring for the parts 4, 5 there are peripheral grooves 12, 13. The welding of vanes and barrings to each other takes place by the slit tongues 6, 7 by means of a pressing tool or the like being bent down into the grooves 12, 13 for an axially lasing engagement . Figures 1 and 2 show the tongues bent down.

I fig. 4 visas en skovel med sned sidovagg. Har visas tungorna, innan dessa bojts. Fig. 4 shows a paddle with an oblique side cradle. Have shown the tongues, before these are bent.

Sasom visas i fig. 5 kan delen 10 vara riktad utat-uppat och inford i sparet 11 i barringen genom exempelvis ringens pakrympning. Da harvid ett lasande ingrepp erhalles hr det tillfyllest med en utskjulande del 5 med ingrepp enligt uppfinningen, eftersom sistnamnda ingrepp har her till huvudsaklig uppgift att forbattra infastningen med hansyn till de av tangentialkrafterna alstrade bOjningsmomenten. As shown in Fig. 5, the part 10 can be directed outwards and inwards into the groove 11 in the bar ring by, for example, the pack shrinkage of the ring. In this case a lasing engagement is obtained here with a concealing part 5 with engagement according to the invention, since the latter engagement has here mainly the task of improving the fastening in view of the bending moments generated by the tangential forces.

I fig. 6--9 visas nagra olika tungarrangemang. Varje lot hr enligt fig. 6 forsedd med fyra tungor och enligt fig. 7 och 8 med tva tungor, vilka ligga enligt fig. 7 mitt for varandra och enligt fig. 8 diagonalt. Figs. 6--9 show some different tongue arrangements. Each lot here according to Fig. 6 is provided with four tongues and according to Figs. 7 and 8 with two tongues, which lie according to Fig. 7 opposite each other and according to Fig. 8 diagonally.

Claims

Patent claim:

Paddle ring for radial turbines or radial compressors with blades, fastened between two or more ring joints, characterized in that parts (4, 5) projecting from the paddle feet (2) towards the ring joints (3) are provided with circumferentially directed tongues (6, 7). which are embedded in peripheral grooves (12, 13) in the ring joints for a lasing engagement.

Device according to claim 1, characterized in that the vane ring and the ring joint are further connected by means of an annular part (10) projecting from one part of Iran, which is fitted into a corresponding groove (11) in the other part.