DE2259832C2 - Cooled radial bearing within a support tube - Google Patents

Description

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protruding from the end of the shrunk bearing, bearing play and passport, ng

(24) executed, and its opposite- ^mc £ ^r ^! f? * _{d F ,, 7Cij} , _en the execution of the end in fits 32) on the inside diameter D e Fig. 1 and b g. - ■ w-.fc. _d storage yield

ser of the bearing support tube (2) and marked with a *> Racl.-allagers' «" ^^^ / "^" X ^^ dargc Mounting sleeve (19) is connected with between the pipe, namely d.e * "t Ifrad 7 and teaching«! 1 ^ the projecting bearing body (23) and the filter Tragiöhr2 neb "impeller Tu nd Le ^ ta, αϊ Bearing carrier (2) formed, insulated annular gap of the conventional filling and g. -

(25), which is connected via bores (27) with a .so the execution according to the ^ f.ndung Her en cold water space (28), the, 5 The bearing body 23 ^IS \ <with an auxiliary support tube executed in a known manner 2, as a fre. "F" J conveyor (30) is in communication, the F in the overhanging Lnde ISTJ% _η? "Turn shrunk over a receiving space (31) with the other end is ⁱⁿ ™ ^sun &<-. ^N the annular gap (25) is, and of the wider 32 on the inner diameter of the bearing support tube 2 fcc ren the cold water space (28) via bores 30 and with, the Mon ^a ß ^chuls ° J? * £ ™ ^ j * _m (37) with a 7wei.en annular gap (36) between the protruding layer body 23 and a second mounting sleeve (20) and the pump bearing support tube 2 is cn R ngspaIt 25 Gebrtdet Gc penwCle f22, and from there bores (38) with F ^ 2 «rf. n ^ ^ ragrohr ^ eme ^ Isoh r with a space between a sealing collar (35) sleeve ZO inserted, un ^ _lnf , _p "_fi; | _{lten or eva} . a" aiosc, M,> n, a _f e "ü, _s c and do _m L _ag or (M) v _e r- _Js gjm ^^^ "Xf ^^ L · ^{bundcn 1Sl} ·« ind one or more bores 27 so arranged

that the annular gap 25 is connected to the isolated cold water space 28. Between the holes

ihd bearing bodies ^

room 28 connected

The invention relates to a pump shaft 40 27 and the bearing 24 is ^ wiper ^ the passage opening of a pressure vessel, in particular 23 and the D.chtbund 35 m D.chtspa a reactor pressure vessel penetrating, hot-De insulation takes place ζ ^^ "e

wasscrumstrom.es support tube for receiving the pump through an Isoherhulse 29 which, like the pen bearings for a coolant circulation pump, can be implemented. For i "" ^ ils self-supporting tube housing a contact-free in 45 encloses e, ne Montagehulse_ _"e protrudes the pressure vessel and practice 36 pumpenseittgen end within the pressure vessel bearing 24 facing away Se.te at its upper, DEND, the shaft 22 of the Spau, 'inter alia, for the inclusion of a cooled radial bearing with the Kalfwasserraum 28 ^{and designed} for the pump shaft. Sealing gap at the collar 35 and the L.

Such a design of a bearing support tube ₅ holes and bores 38 with d «J is already in connection with the German patent application stiom. Proposed on the ^ «™ P-> 2 24 853.9-15. It has gers is a well-known VVuse out but still the night that system incidents such as conveyor system 3β initiated which ^ the storage

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supply, thermal insulation arrangement and cooling water supply - 60 and the holes 38. Through tion, the solution being that the bearing 30 is a partial flow through the annular gap 25 and body (also like the bearing support tube) as freely tra- bores 27 superimposed on the bearing cooling flow. the gender cantilever with in its protruding end insulating sleeve 26 prevents heating of the Executed shrink-fit bearing bush and its partial flow when flowing through the gap 25. The opposite end in fits on the inner 65 bearing body 23 is from the outside through the partial flow diameter of the bearing support tube and cooled with it. In the area of the fits 32 there is a higher one a Moniagehülse is connected, with between the temperature of the bearing body 23 is desired. The iso protruding Bearing body and the bearing support tube lierhülse 29 allows a higher temperature in

2 259 S32

disem part of the bearing body 23 and prevents the liquid in the space 28 from heating up this arrangement and through a suitable choice of material for parts 2 and 23, the fits remain 32 in a cold and warm state in a fixed connection.

If the cold sealing water, which is used for cooling the bearing, fails, durc !; the special arrangement of the flow guide of the partial flow driven by the device 30, which is then cooled again because of the sealing gap at the collar 35 through the entire cold water chamber 28 via the bores 37 and 38 to the bearing 24 so that the bearing running clearance 34 is not too small. The flow direction imposed by the delivery device 30 prevents liquid from penetrating from the space 31 into the bearing in the event of a cold water seal failure. The temperature of the liquid in the space 31 rises because of the failure of the sealing water and is higher than that of the space 28. Due to the flow guidance through the gap 25 , the bearing body 23 is heated from the outside. Via the bores 27, the partial flow reaches the space 28 filled with cooler water, is mixed and thereby cooled and then flows through the bores 37, the gap 36 and the bores 38

ίο Bearings outside and inside the protective sleeve 33 via the conveyor 30 back into the room 31. This measure prevents that the thin-walled shaft sleeve 33 heats up and expands faster than the thick-walled

's Gere Bearing Carrier 23. A growing of the bearing gap 34, which would result in a failure of the camp, will be missed.

1 sheet of drawings

Claims (1)

"C formed isolated annular gap, which is connected via Boh- J.LUIIUCIC1I1 _ _, · ....." ν., Itu.-n "prraum . S ₁ = SSvS and d s Fälks, penetrating, hot water flowed gap connectedι and d s * ^ Support tube to accommodate the pump bearings for space over the ^Boh ™ ⁿ . eme Kühlmi.tclumwülz Pump, which as a self- / wipe a second - ™ ^nM g £ _{with a cm} , protruding tubular housing contact-free in the pen shaft and ^ from there over to h Pressure vessel protrudes and in its upper, io space between a ^{Ü! <| J'öunu}