US1838897A

US1838897A - Baffle for pull rods

Info

Publication number: US1838897A
Application number: US138201A
Authority: US
Inventors: Aalborg Christian
Original assignee: Westinghouse Electric and Manufacturing Co
Current assignee: CBS Corp
Priority date: 1926-09-28
Filing date: 1926-09-28
Publication date: 1931-12-29
Anticipated expiration: 1948-12-29

Description

Dec. 29, 1931. c; AALBORG 1,838,897

' BAFFLE FOR FULL RODS Filed Sept. 28; 1926 2 Sheets-Sheet 1 ATTORNEY Dec; 29, 1931. I c. AA'LBORG #8 BAFFLE FOR FULL RODS Filed Sept. 28,- 1926 2 sheets-$11961 -2" WITNESSES: I INVENTOR /57 64/757700 fia/boxy M I W v ATTORNEY Patented Dec. 29 1931 uNiTeosrAfrEs ,IPATENVT' OFFICE cnms'rmnnamaono, or rrrrsnnaen, rmns wami, ASSIGNOR 'ro WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY, A; CORPORATION OFPENNSYLVANIA arns r03 BULL nons Application and September 2a,.i92e. Serial No. 133,201.

" My invention relates"; to circuit interrupters and particularly to operating mechanism therefor. One'object of my inventionis to provide a connection between the actuating mechanism'for a group of circuit interrupters and the operating mechanisms of the several circuit interrupters that shall prevent the access of gases generated within" the several circuit interrupters to the actuating mechanism. 1 Another object of myinventionis to provide an inter-connection between the several circuit'interruptersof a polyphase circuitinterrupter' bank and the actuating mechanism therefor that shall prevent the pressure waves generated in the several circuit interrupters from being transmitted to the other circuit interrupters and the actuating mech anism. 1

In the patent to HarrisNo. 1,031,789, issued July 9, 1912, is shown and described a combination of circuit interrupters and an actuating mechanism that are connected by suitable link mechanisms that extend through pipe or tube sections between the several circuit interrupters, and between them and the actuating mechanism.

. In constructions embodying, the principles 0f the above mentioned Harris patent, the

operating links extend directly through the several circuit interrupters and are, accordingly, exposed to the gases and pressure waves generated within the several circuit-interrupter casings upon the operation of the interrupters. Under conditions of severe service, oil and gases have occasionally been transmitted through the pipe or tube sections from one circuit interrupter to another and to the actuating mechanism.

I propose to avoid the foregoing conditions by providing separate compartments for the circuit-interrupteroperating mechanism and the connections to the actuating linkage. Adjacent compartment are separated by a wall through which a shaft, or other suitable moving element extends for transmittingenergy from the actuating linkage to the operating mechanism of the associated circuit interrupter, without permitting the transfer of gases and /or oil from the circuit interrupter to the pipe or tube sections, encasing the actuating linkage.

In the accompanying drawings,

Fig. 1 is a sectional view of a circuit interrupter embodying my invention, taken along the section line II of Fig. 2;

' Fig. 2 is a view, partially in elevation and partially in section, of a circuit interrupter embodying'my invention, taken along the section line 11-11 of Fig.1;

Fig. 3 is an elevational view of a circuit interrupter embodying my invention; and

Fig. 4 is a view, partially in elevation and partially in section, of such circuit interrupter taken along the section line IVIV of Fig. 1'.

Figs. 2, 3 and 4 collectively, represent a bank of circuit interrupters and their common actuating mechanism for controlling a three-phase circuit.

Referring to Figs. 1 and 2, my invention comprises,-in general, a circuit interrupter that includes a pull rod 2 for controlling the connection between aplurality of relatively movablei contact members (not shown) an operating mechanism 3 for actuating the pull rod 2 and a shaft 4 that extends into a compartment 5 containing mechanism 6 for connecting the shaft 4 to alink mechanism 7 which, in turn, extends, through suitable pipevor tube section 8, to an actuating mechanism 9. U vThe mechanical details of the pull rod 2 and the operating mechanism 3 may be of any preferred type,.although. I- prefer to employ the type shown and described in my Patent No. 1,652,508 issued Dec. 13, 1927.

The operating .mechanism 3 is mounted partially within the circuit-interrupter. casing 1 and partially'in a compartment 11 formed in the casing cover 12. Awall 13 separates the compartments 5 and 11 and is of sufficient rigidity to withstand the pressures incidental to theoperation of the associated circuit interrupter 1. The shaft 4 by an arm 15, to the linkage mechanism 7 and, in all but the last of the circuit interrupter units, the links 7 are connected to a pin 16 that is connected to the arms in order that the several links 7 shall be kept in alinement during movement of the shafts 4 and the arms 5.

hen it is desired to operate one or more of the circuit interrupters 1, the actuating mechanism 9 is energized to move the link age mechanism longitudinally of the pipe or tube sections 8 in the proper direction to open or close the interrupter, as desired. The linear motion of they links 7 is trans? mitted, through the several arms 15 and shafts 4:, to the operating mechanism, or mechanisms, of the circuit interrupter, or circuit interrupters l and the latter are opened or closed, as desired.

\Vhen each circuit interrupter 1 is opened, an appreciable amount of gas is generated, the oil contained therein is violently agitated, and a pressure wave is developed by the are drawn within the circuit interrupter. Such pressure wave and the gases incident thereto are confined within the compartment 11 and are prevented, by the walls 13, from passing into the con ipartn'ient 5,.

Accordingly, the danger of gases and hot insulating oil traversing the several pipe or tube sections 8 to adjacent circuit interrupter units 1 and the actuating mechanism 9, is prevented. When the circuit interrupters 1 are closed, very little arcing occurs and, accordingly, my invention is designed primarily for protecting the operating mechanism 9 when the circuit interrupters 1 are opened.

It will thus be seen that I have devised a connection between a single actuating mocha nism and one or more circuit interrupt-ers that characterized by the transmission of energy from the actuating mechanism to the several circuit interrupters without the danger of gases. and insulating oil being transmitted between the several circuit interrupters and between the circuit interrupters and the actuating mechanism.

I accomplish the above, mentioned result by providing separate compartments in each of the circuit interrupters for the operating mechanism and for the connection of the actuating mechanism thereto. The two compartments are separated by a barrier through which a movable member extends and with which it makes a tight joint.

While I have shown but one embodiment of my invention, it will be apparent to those skilled in the art that various changes, modifications, substitutions, additions and omis? sions may be made in the apparatus illustrated without departing from the spirit and scope of my invention, as set forth in the appended claims.

I claim as my invention:

In a circuit interrupter, a casing defining a plurality of compartments, operating mechanism for the circuit interrupter disposed in one of the compartments, actuating means for the operating mechanism disposed in another compartment, a shaft connecting the said two mechanisms passing hrough the a l. of he comp r ment forming a gas tight joint therewith.

2. In a circuit interrupter, a casing defining a plurality of compartments, operating'mechanismfor the circuit interrupter disposed in one of the compartments, actuating means for the operating mechanism disposed in another compartment, and a rotatable shaft extending between the com Jartmeats pas ing through the Wal thereof or ing a gas t ght seal therewit 3. In combination, a plurality oi circuit int rrupt rs a h hav ng an p ating me ani m. nd c ntact m mbe s W thin a ch ber, a s af havinga rank o ach f it nd supported n a its mid, portion by th wall o a h said hamben mean n the sa walls forming a seal with the said shafts, a ngi udinally xtend ng link int co ect ing he cranks on th ou sid o t e chamb an act ating mecha i m f t l nk a d a ontainer mem er or n l ning the la said ranks, he l and th actua ng me han sm.

In tes imony wh eo I have h r un o u s ibed my ame thi 1 th ay f Septcmb 1.926-

CHRISTIAN AALBOB-G.

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