SU629601A1 - Electric machine with cryogenic cooling - Google Patents

Description

The invention is in the field of electrical engineering, in particular for electrical machines with cryogenelm cooling.

A cryogenic-cooled electric machine is known, comprising a rotor with a superconducting excitation winding, a shaft, a screen and end-plates mounted on the shaft, filled with external and internal walls and partitions, between which the communicating with the said channels ij are formed, are connected to the coolant supply and discharge channels. .

However, such a machine does not provide an increase in cooling efficiency, since the screen is not cooled.

An electric machine with cryogenic cooling is also known, which contains a rotor with a superconducting excitation winding and is made with channels for supplying and discharging the coolant shaft and an electrothermal screen with end elements mounted on the shaft 121.

However, in this machine, there is an insufficient shielding of the cryostat from its end elements, despite the fact that the channels inside the shaft shanks as it passes through them, the gels remove most of the external heat load. In addition, large centrifugal loads acting on the electrothermal screen imply the presence of sufficiently strong and, consequently, massive supporting end elements, which causes an increased heat transfer between the screen and the shaft, which have different temperature levels. A large number of radial pipes for supplying and discharging refrigerant to an electric thermal screen, which must be connected vacuum-tightly, introduce an element of unreliability into the design of the machine.

The aim of the invention is to increase cooling efficiency by increasing the reliability of thermal protection of the end parts of the superconducting field winding, as well as lowering its temperature by additional pumping of refrigerant vapors, providing a shock-free flow of cooling gas and reducing the heat influx to the electrothermal screen from the side of the warm rotor shaft, i.e. from the coolant outlet side of their screen into the rotor shaft.

This is achieved by the fact that in the proposed machine, the end elements are made with external and internal walls and partitions, between which the cavities communicating with the measuring channels and channels are formed, some of which, communicating with the coolant supply channels, are located in the zone of the green wall, and others , I tell you; with drainage channels, in the zone of the outer wall.

The machine can be equipped with a sleeve with holes and blades located in a cavity placed on the inner wall of the

The machine can be equipped with a sleeve with holes, a diffuser is fixed on KCVIOPO-I, the following is performed: D In: 1 type of plates J located in the cavity: - 1/1 in the cavity, and OTBEOCTJ F Sun K; ah performed with nakloisd radkusu: In FIG. i sk-zmati. ches. ioob}: -: the proposed electric watch is ash1-na and is a general view; fig 2 - o / e-; tg:.:; s; s: 1O-screen of the cryostat, spread; ny ;;; -. the cavity of the rotor, kotsro y: ;;.: - ::; o .-: o.h: h: - :: s blades, section; vg fgao yolost rotor, in which ::: -; -: -: - v; i diffuser, section.

; Electric; about::: ;; rotor 1 with superg1pBoag: 1p J s; -:.;. (excitation 2, zakuumnog kg-: G: - -.,) with stator winding 4. On; sat:; the rotor coaxially fitted bushings b, which form the channels 7. refrigerant walking :, al opposed :; on bearings 8 and italat on ko-g:; - x collecting devices 5 for oTJio Ujimero. coolant. A cryostat to a rotor;: ;; - 1-.г; le-г51: chen relative to polleope G1lso;.; Och. and consists of its own property c. j .- :: 10, in which it was developed: ;; -; -.:.:.: -lZ:

TYAMI of sleeves 6 with RAD5-1Al -; b | ;. Oi -; rOT5

, mi 11 and 12 for the passage: cooled helium, and electrotheric., with colorful elements: iOjjo.o. vKeffii-ao ;; i Korah :::: r1uz 13 and the inner 14 walls n ps; ::. argski 15 Between the latter, the annular cavities 17, 18, aolDi: o communicate with the channel. t supply hll.dah; it is located in the zone of the inner wall 14, and the cavities 17 are connected t; refrigerant drainage channels to the oas are still in the area of external c-gank -. On the sleeve b with a hole, 1 J can be fixed the blade 19, the wicked saline cavities 18, On the spout 6 a diffuser 2.3 can be fixed, made in the form of plates 21, spatially spiraled in the cavity 17 ,

When the rotor rotates, the evaporation point: helium under the action of forces through the holes 11 in the necks of the cryostat. enters the cavity 18, flows:; the perimeters that cool it forming it will renin the walls of the end elements, Radial blades 19 when turning; up to 1: n :;

Oyuyu Oi1; oka GA with a gas l soooooooooooooooooooooooooo. m., resulting in very much jienTpoo jiO-iHi forces, tg-; c (j (; fiapa from cryostat, Dat — its helium, and

; IVGOVIM K2. Chalec J. b in 1: .. rlc.

B Daii; a ate:; | -y;,; ) O}: ak l h h cue speed, TJiajL-iO ghsdm G; Og:) Ral diffusers 2C in the colloid of the outer walls — 13 tons; 1%; D; ne-54: vf; . It cools it and .jTrgguQ vm: oh; hl e oa-a.1Y 7 cooling

o ma; 1e, o, ostkgatsya high: -; did; eKTHE choo jo. jauiHTU overupc3c, D; iio7::, smsg1kk e s-; o t rael-gchnyh 9Mi; ooa;.; / :-) jiKiv urg :: h, -th i-opOGHb; -: evil, o.pe, -: T: -; 3io: i; zl. v; opMO3KpaH. C o / O0., Ge-k, flowing from the axis T- :; ;.: 1 oo ;:; co; 1 1 and reverse obdu

: -joi.io :: and j e :: -: mo: 1 ibi, in 5 {open ,, ,,, ....., .. ,,,. - ....-.,. .,. ,,, j-., parties;.;: from-: .ojjjbf; TOloI:;. :: X OSTEOIKOZ

DOI; O. Chromo TO-rOf is one of the tortle ojO-- oi; t iso and sylvm-; about p: -; :: - ::: .. ait i olele i rotote p-io e: pa n, of, - ;. .; lol:; about 0 the amount of radioioi-CT oi i / oo. oo pa - K iJibiieB- sH according to OiiiH o o o ::; :: ii a ei crypt of the cryostat: -jaHii: -i С11-obmo1 km rotor For resultix-,;., i:; aHI; l h about P CCH e :; ; OZ HOKyySvSHOV GOLCHO lio cryooags, allows 4trj oolgzki in it pressure ras -; gh d; lat; and ok working temperatures,

lah g. about, about-zero :; their necks are koios (-;:, o--. o4-: o o.ooKDaE4; M, installation ;: logigcho cat ;; osho -.p vragdeint; ioa oOOOUfl Ti; j; ::, L; ar-ouTy circumferential jooro, CH1-O in terms of: pa chao-oo effect, This is quality - oioo.- ;; ss. oo-5o; i s; ooh1; from:; - L.-j: riyooai ve Gilravly; truck - ..: B.illOpilOH STUPON-U .. IN THE CURRENT,

The base size of the foam chona in the outer: approx r opJicHbJX zlementoz, on the basis of which:, -; flows from the electrothermo screen: o-; 3: 3.o; Kl rotor, located the pattern;:,., D1f ;; You are wired in uiaoop-j spirally, oviHo; - :: otrOn .., it allows you to get: Tb; ..; Common input i ,; gas outlet

.noy: -f.; ip - big gras; t rtsinej jQ tours for increase -

Claims (1)

paths .dl ;;; KeUi-n cooling gas, 7 this kc; tse; yyu provided / darns.o ttscheii O ;;::. la: r: yes a11 his ge ,, Bq: ron: yes1 about Kl iop-guilt cryos:. he prod:; ,, ;; yyy, V.; o, chos; .oi hGez RLP pa bivL-x OOP ppoiH-; : 2, the latter are inclined to the radius, for example, tangentially. This also applies to the holes that.1 and the screw channels are connected to the coolant shaft ends with cavities,. Claims 1. Electric machine with cryogenic cooling /, containing a rotor with a superconducting excitation winding and made with water channels and coolant outlet shaft and electrothermal screen end elements mounted on the shaft, I lj -Chayu, c, to increase the cooling efficiency, the end elements are made with outer and inner walls and partitions, between which the annular cavities are formed together with said channels, some of which are bschayuschies with channels for supplying a refrigerant, taken in the area of the inner wall, while other channels with soobschak tsies outlet, - in the area of the outer wall. 2 MaDJHHa pop. 1, distinguished by the fact that it is equipped with a sleeve with holes and blades located in the cavity, the B zone of the inner wall being mixed in. 3, The machine according to claim 1, characterized by the fact that it is equipped with a sleeve with holes, on which a diffuser is fixed, made in the form of plates arranged in a spiral in a cavity placed in the zone of the outer wall; 4, Claim 1, which differs from the fact that the holes in the sleeves are inclined to the radius. Sources of information taken in BHiiMaHf-re during examination: 1. USSR Author's Certificate No. 262240, H 02 K 9/16, 1968. 2 For Vk № 1972945/07, cl., H 02 K 9/16, -1973, according to which the decision was made to issue the author with B KG; e te e with c and a 9 (yg / g. J ff W eleven(