US851658A - Reactance-coil. - Google Patents

Description

PATENTED APR. 30, 1907 REAOTANCE COIL. APPLICATION FILED M123, 1906.

2 SHEETS-SHEET 1.

INVENTOR WITNESSES ATTORN EY UNITED STATES PATENT OFFICE.

CHARLES LE G. FOltlliStll'li, ()l \YlLlilXSlEl'ltG. ll'lXNbYLVAXiA, ASSIGNOR TO 'ESTINGHOTISE lildCUlltltI {X1 MAXllZdUllflilNG COMPANY, A' COR- PORATION OF PTLNNHYLVANIA.

REACTANCE-COlL.

Specification of Letters Patent.

Patented April 30, '1907.

Application filed Marci. 23, 1906. Serial No. 307,732.

To rr/./ 'u'imm 1T1 luv/l, conic/aria.

Be it known that 1, CHARLES lit: (1. FOR TESGUE, a subject of the liing of (treat Brit-- ain, and a resident of Vt'ilkinslnirg, in the 5 county of i-kllegheny and State of Pennsylvw nia, have invented a new and useful lmrovement in Reac'tai'1ce;(.oils, of which the ollowing is a specification.

My invention relates to electric apparatus IO and it has for its object to provide transformers or reactance coils which shall be adapted for use in connection with polyphase electriccircuits and shall embody a. specially advantageous and symmetrical design.

It is often desirable to use transformers and reactance coilsin connection with rotary converters or for similar purposes and l pro Vide, according to my present invention, a 20 c il group which comprises in general, magnetizable core members which are symmetrically disposed and are supported by a nonmagnetizable frame structure and means for magnetically interconnecting the several core members. The aforesaid non-magnetizable supporting frame may be relatively light since all the el' tromagnetic stresses are balanced by reason of the symmetrical distribution of the flux A further advantage of my improved coil group lies in the fact that the inductance may readily be adjusted without disturbing the symmetry of the arrangement.

1n the accompanying drawings, Figure l is a plan view, of a reactance coil group which is adapted for use with three-phase altcrnating current circuits and which is constructwl in accordance with my invention, certain of the parts being broken away to more full 4o disclose the structure. Fig. 2 is av view, partially in elevation and partially in section, of the group shown in Fig. l.

1 ltel'ei ring to the drawings, the device illustrated comprises laminated core members 1 2 and 3, the longitudinal axes of which are parallel and symmetrically disposed and which h eve the general form of souarc brisms. The four corners of each core incinher are similarly provided with notches t to 50 lit a suitablesupporting frame. 7

llcactance coils 5, (i and 7 are wound upon cylindrical spools S, t) and l which are fitted over the core members 1, L and 3, and the 1 several core mei'nbers are of sufficient length to extend a short distance beyond the spools at each end.

The positions of the spools upon the core members and the relative. positions of the several core members are determined by a noii-magnetizable frai'ne structure which is 60 comprised of two similar triangular clamps 1] and 1'3. 1 The triangular clamps are notched to engage the corners, and the notches t, of the core Inen'ibers and have beveled edges to lit together. The beveled edges of the clamps are bound together by suitable bolts 13 and the upper and lower clamps are fastened together by strips 14 which are parallcl to the core mcmlmrs and are attached to the three sides of the triangular clamps near their middle points in order to avoid interference with the spools on which the coils are wound. The three core members are further supported by spacing strips 15, which are fastened to the side strips of the triangular clamps opposite the strips 14 and the ends of which are beveled to engage the inner corner notches of the core members. The triangular clamps l 1 and 12, the connecting strips H and the spacing strips 15 are preferably constructed of wood and are of such thiclc ness that their surface is ilush with the ends of the core members when they are attached thereto.

The core members 1, 2 and 3 are interconnected magnctiiadly by laminated ring core members 16 and 17, that are constructed by vinding magnetizable strap upon spools formed by center blocks 20 to which their disks 21 of non-magnctizable material are at tachcd. The difference between the outer and inner radii of the rings is substantially equal to the width of the core members 1, 2 and .3 and the inside diameters are such that the ring core members are adapted to engage the entire end surfaces of the core members. 'lliesc rings serve to symmetrically distribute the flux, and the magnetic forces produced when the coils are energized tendto hold the ring against the ends of the other core incinbcrs so that all the parts are readily held togethcr by a relatively light frame structure and vibrations of the core are avoided.

The ring core members are held in position against, the prismatic core members by tri armed supports 18 which comprise an upper rsngement shows, but me readily be en'sbodlecl in transformers or reectance struc tures having any number of coils, and I de sire that variations in size and errs'ngeinent of details which do not depart from the spirit of my invention shall be included Within its scope. I

I claim ss my invention:

, 1. The combination with core members, of coils Wound on said members, in:'1gn eti zebie end rings which interconnect ssirl core menibers, end a supporting frame of nonrneg netizsble materiel.

2. The combination .vith cylindrical coils, a. core member for each soil, and magnetizsble end rings, of s laminated structure for interconnecting ssid core members.

3. The combination with cylindrical coils, miignetizsble cores therefor heving longi' tudinsl grooves and s noi'i-nisignetissble supporting frame for said members which is adapted to engage said grooves, of m egnetizable end rings of laminate-(l structure that are adapted to magnetically interconnect ssid sore members. 7

l. The combination with three coils which are symmetrically disposed at the corsets of a triangular non-magnetiznble support, and interconnecting rings therefor, which are wound with insgnetizeble strep and which.

are adopted to engage theenlls of ssideore members, of means for binding the several parts together.

5. The combination with eni'lring mean hers of megnetizsble materiel, prismatic core members 01" equal length that are located between the ring members, coils that Wound upon said core members and a frame ofnon megnetizable materiel for maintaining a. relstive lateral position of the severehfiarts, of means for holding the rings in position against the ends of the core members.

6. The combination with end ring members of megnetizsble materiel, pi 'sm s'itie core members of equal length that are loeated be tween the ring ineinbers,'coils that are Wound upon ssid core members and frame of nonmsgnetizable material for maintaining a relative lateral position of the several parts,

of ineens for holding the rings in position against the ends of the core members, that comprises an upper and "3; lower bracket snol e bolt which passes through the center of the end rings end binds the two brackets together.

7. The combination with end ring members of-insgnetizable materiel, prisi'nstic core ii'iernbors of equel. length that are symmetric ally disposed between the ring members', 7o-

coils that are Wound upon said core members and 9, frame of soi'i-msgnetisable material for maintaining 11 relative lateral position of the several parts, of means for holding the rings in position against the ends ol the core mem 7 5 hers. that comprises an upper and a lower bracket and e bolt which passes througl'i the center of the end rings end binds the two brackets together.

8. The combination with end ring memhere that are construe ed of mngnetizsblc strap and laminates p inetic core members of equal length that symmetrically (l1sposed between the ring members, of coils that are wound upon said core members and a frame of non- Inagnetizeble material for nminteining a relative lateral position of the several parts. 9. 'l he combination with end ring members that are constructed of ms 'uetimble e trap, laminated prismatic core members of equal length that are synunetriosll disposed between the ring members, coi s that are wound upon seirl core members end a frame of non "esgnetizsble materiel for maintaining it relative lateral position of the several parts, of means for holding the rings the ends of the core memhere, that comprises an upper and 0. lower brecket end a bolt which passes through the I00 center of the end rings and binds the two' brackets together.

testimony whereof, I have hereunto subscribed my name this 22nd day of March,

CHARLES LE liQltl. QSCUE.

Witnesses:

Horzome ll. lbononsxrrr, BIRNEY limes.

Images