GB1604938A - Upstanding mounting structures for high-voltage multibreak circuit-breakers - Google Patents

Description

(54) IMPROVED UPSTANDING MOUNTING STRUCTURES FOR HIGH-VOLTAGE MULTI-BREAK CIRCUIT-BREAKERS (71) We, WESTINGHOUSE ELECTRIC CORPORATION of Westinghouse Building, Gateway Center, Pittsburgh, Pennsylvania, United States of AMerica, a corporation organised and existing under the laws of the State of Pennsylvania, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement:- This invention relates to a high-voltage multi-break circuit-interrupting assemblage structure.

The present invention includes a highvoltage, multi-break circuit interrupting assemblage structure, comprising a single upstanding hollow insulating first column, a first operating mechanism housing surmounting the first column, a first pair of second hollow columns mounted on and extending angularly from the first operating mechanism housing, a second operating mechanism housing surmounting each of the second hollow columns, a pair of V-shaped double-break arc-extinguishing interrupting units mounted on and extending angularly from each second mechanism housing, mechanical means comprising interconnecting insulating operating rods extending through the columns for actuating the units and comprising motion transfer means in the operating mechanism housings for interconnection of the operating rods, the mechanical means being coupled with the units to simultaneously actuate the units in a transmission-line circuit, and one of the arc extinguishing interrupting units on one of the second mechanism housings and one of the arc-extinguishing units on the other of the second operating mechanism housings, being interconnected and forming a rectangular assembly with said second hollow columns.

Obviously, where each second hollow column supports a pair of interrupting units, there results, from an overall standpoint, a high-voltage circuit-interrupter assemblage involving four series breaks for interrupting the higher-voltage transmission-line circuits.

Various types of interrupting structures, or arc-extinguishing units may, however, be employed, such as oil-break interrupting units, vacuum-type units, etc. where the feasibility, or other requirements, dictate a different type of interrupting unit, rather than a puffer-type, gas-blast interrupting unit. In other words, the instant application is directed, generally, to a mounting arrangement, for a multi-break interrupting assemblage and not merely to the use of any particular type of arc-extinguishing unit.

The invention will now be described, by way of example, with reference to the accompanying drawings in which: Figure 1 is an end elevational view of a single-phase, high-voltage, multi-break circuit-interrupter, the pole-unit comprising four breaks in electrical series, and indicating the overall structural mounting arrangement; Fig. 2 is a front elevational view of the single-phase circuit-interrupter assemblage of Fig. 1, taken generally along the line II--II of Fig. 1, looking in the direction of the arrows; Fig. 3 is a diagrammatic circuit arrangement of the four-break interrupting device of Fig. 1 with the separable contacts illustrated as being closed; Fig. 4 is a longitudinal, generally-vertical sectional view of one of the hollow columns of Fig. 1, taken generally along the line lV-IV of Fig. 1; Figs. 5 and 6 illustrate, in detail, one of the plurality of puffer-type interrupting units, with Fig. 5 illustrating such a puffer-unit in the closed-circuit position, and Fig. 6 illustrating such a puffer-type arc-extinguishing unit during an intermediate portion of the opening operation, with the contacts separated and the direction of gas-flow being indicated; and, Fig. 7 illustrates the metallic housing-andlinkage arrangement at the "first" mechanism housing surmounting the lower single, "first", upstanding hollow insulating column of Fig. 1, and indicating its adaptability for operating additional multi-break puffer units by the use of "second" insulating rods extending through angular, or slanted "second", hollow insulating columns surmounted on such a "first" lower-disposed mechanism housing, the linkage parts being indicated in the closed-circuit position; DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, and more particularly to Figs. 1 and 2 thereof, it will be observed that there is illustrated a singlephase, high-voltage circuit-interrupter assemblage, 1, in this instance being of the compressed-gas, multi-break puffer-type four breaks in electrical series, as illustrated in Fig. 3, and each of the puffer units 3 being of the type illustrated in Figs. 46.

With further reference being directed to Fig. 1, it will be observed that there is generally provided a lower-disposed single, sole, "first" hollow upstanding insulating column 5. Surmounted at the upper end of the first hollow single upstanding insulating column 5 is a "first" mechanism housing 8, illustrated more clearly in Fig. 7 of the drawings, and adapting a "first" lower operating rod 10, extending upwardly within the first lower column 5, to actuate additional upper-disposed "second" operating rods 13 extending angularly upwardly through additional slanted hollow, "second" columns 16 and 17.

Disposed at the outer free ends of the second, angularly-extending, slanted hollow columns 16, 17 are a pair of V-shaped, multibreak, interrupting assemblages "A" and "B", comprising a plurality of pairs of arms 19-22, each of which arms houses a puffertype interrupting unit 3 of the type illustrated in Figs. 5 and 6.

A pair of common, "second" operating mechanism housings 8A, also of the type illustrated in Fig. 7, are provided at the upper ends of the second columns 16, 17, thereby causing the simultaneous actuation of the cooperating puffer-type interrupting units 3 disposed within the upper "third" hollow Vshaped columns 2528.

Generally, the electrical circuit L,-L2 passes through the four-break assemblage 1 in the manner illustrated in Fig. 3.

Fig. 4 illustrates a longitudinal vertical sectional view taken generally along the line IV--IV of Fig. 1, to illustrate the interior structure of the left-hand, puffer-type interrupting unit 25. As is well known by those skilled in the art, each of the casings 2528 is gas sealed and includes a stationary piston 30, over which slides a movable operating cylinder 31 compressing gas 32 therebetween. The movable hollow operating cylinder 31 additionally carries the movable contact 34, which separates from the stationary contact 35, drawing an arc 37 axially through an insulating movable nozzle 40, also carried by the movable operating cylinder 31, in a manner more clearly illustrated in Fig. 6 of the drawings.

Gas flow. compressed within the compression chamber 41, passes through an apertured spider arrangement 43 and through the interior of the hollow insulating orifice 45 to effect extinction of the arc 37 established therein.

With the four-break device 1, as illustrated in Figs. I and 2. and as electrically diagrammatically illustrated in Fig. 3, it will be apparent that there are four such puffer-type interrupting units 3 (as shown in Figs. 5 and 6) in electrical series associated with the two V-shaped interrupting assemblages. designated by the letters "A" and "B" of Figs. 1 and 3.

In more detail. with further reference to Fig. 7, it will be observed that there is provided a bell-crank lever 49 fixedly mounted upon a horizontally-extending operating shaft 50, and having a pair of rotatable arms 51, 53 fixedly secured thereto.

At the outer end of each of the arms 51 and 53 are floating links 55 and 56, which pivotally connect to additional rotatable crank-arms 58 and 59 associated with the lower ends of each of the second, angularlyextending, or slanted hollow insulating columns 16 and 17. The two "second" insulating operating rods 13 link, additionally, with a further common mechanism housing 8A, which may, be of the same mechanical arrangement. as illustrated in Fig. 7, thereby giving rise to an additional pair of "third" operating rods 62 and 63, each of which effects actuation of an individual operating cylinder 31 (Figs. 5 and 6), which are enclosed within the upper angularly-extending, or slanted insulating hollow casings 25-28. The right-hand portion of the assemblage 1 of Fig. 1, that is to the right of the center line "X-X", is of similar construction, all resulting in a four-break device, involving four series puffer units 3, and all being simultaneously actuated during the opening operation by the single insulating lower-disposed main first operating rod 10 extending to a suitable operating mechanism 70 (Fig. 2) at ground potential, as more clearly illustrated with further reference to Fig. 2 of the drawings.

From the foregoing description, it will be apparent that there is provided an improved single-phase high-voltage, compressed-gas circuit-interrupting assemblage 1, as illustrated with respect to Figs. 1 and 2, having a single upstanding hollow lower-disposed 'first" insulating column 5, which at its upper end supports a common mechanism housing 8. Angularly-extending, or slanted second hollow insulating columns 16, 17 surmount such a common first mechanism housing 8, and at the outer free ends of each of these columns is an additional common mechanism housing 8A. as illustrated in Fig. 1.

giving rise to an additional pair of "third" insulating operating rods 62, 63, which effect, individually, a particular single puffer-type interrupting unit 3, as illustrated in Figs 5 and 6.

All of the puffer units 3 are electrically connected in electrical series, as illustrated in Fig. 3, and result in a four-break interrupting device. It will be observed that the shafts 65 and 66 of Fig. 7 are on the outside of the sealed casings 16 and 17, and effect operation of interiorly-disposed rotatable crank-arms 67 and 68, which effect operation of the interior, "second" insulating operating rods 13.

Although puffer-type, gas-blast, interrupting units 3 have been illustrated, it is to be clearly understood that the instant application is particularly directed to a structural mounting supporting arrangement, and not to the use of any particular type of interrupting units. In other words, oil-type arcextinguishing units, or vacuum-type interrupting units may be used in substitution of the gas-blast puffer-type units 3 illustrated in Figs. 5 and 6. Depending upon the voltage and current requirements, the environment and other considerations, arc-extinguishing units 3 of different types may lend themselves more readily to use. As mentioned, the instant application is directed importantly to the structural mounting arrangement, and the operating rods for effecting actuation of a plurality of units in electrical series, which, themselves, may, however, be individually of a wide variety of types, as mentioned.

WHAT WE CLAIM IS: 1. A high-voltage multi break circuitinterrupting assemblage structure comprising a single upstanding hollow insulating first column, a first operating mechanism housing surmounting the first column, a first pair of second hollow columns mounted on and extending angularly from the first operating mechanism housing, a second operating mechanism housing surmounting each of the second hollow columns, a pair of V-shaped double-break arc-extinguishing interrupting units mounted on and extending angularly from each second mechanism housing, mechanical means comprising interconnecting insulating operating rods extending through the columns for actuating the units and comprising motion transfer means in the operating mechanism housings for interconnection of the operating rods, the mechanical means being coupled with the units to simultaneously actuate the units in a transmission-line circuit, and one of the arc extinguishing interrupting units on one of the second mechanism housings and one of the arc extinguishing units on the other of the second operating mechanism housings being interconnected and forming a rectangular assembly with said second hollow columns.

2. A structure as claimed in claim 1 wherein each of the arc-extinguishing units is a puffer-type interrupting unit.

3. A structure as claimed in claim 1 to 2 wherein the first operating mechanism housing includes motion transfer means consisting of a bell-crank operating mechanism in which an insulating operating rod in the first column is mechanically linked to two angularly-extending second insulating operating rods in the second columns.

4. A structure as claimed in claim 1, wherein the first mechanism housing disposed at the upper end of the first column has bell-cranks associated therewith which transmit the motion of a single first insulating operating rod to two angularly-extending second insulating operating rods.

5. A structure as claimed in claim 3, wherein each of the second insulating operating rods mechanically operates a common linkage structure disposed at the outer free ends of the second hollow columns.

6. A high-voltage multibreak circuit interrupting assemblage structure, constructed and adapted for use substantially as herebefore described and illustrated with reference to the accompanying drawings.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. giving rise to an additional pair of "third" insulating operating rods 62, 63, which effect, individually, a particular single puffer-type interrupting unit 3, as illustrated in Figs 5 and 6. All of the puffer units 3 are electrically connected in electrical series, as illustrated in Fig. 3, and result in a four-break interrupting device. It will be observed that the shafts 65 and 66 of Fig. 7 are on the outside of the sealed casings 16 and 17, and effect operation of interiorly-disposed rotatable crank-arms 67 and 68, which effect operation of the interior, "second" insulating operating rods 13. Although puffer-type, gas-blast, interrupting units 3 have been illustrated, it is to be clearly understood that the instant application is particularly directed to a structural mounting supporting arrangement, and not to the use of any particular type of interrupting units. In other words, oil-type arcextinguishing units, or vacuum-type interrupting units may be used in substitution of the gas-blast puffer-type units 3 illustrated in Figs. 5 and 6. Depending upon the voltage and current requirements, the environment and other considerations, arc-extinguishing units 3 of different types may lend themselves more readily to use. As mentioned, the instant application is directed importantly to the structural mounting arrangement, and the operating rods for effecting actuation of a plurality of units in electrical series, which, themselves, may, however, be individually of a wide variety of types, as mentioned. WHAT WE CLAIM IS:

1. A high-voltage multi break circuitinterrupting assemblage structure comprising a single upstanding hollow insulating first column, a first operating mechanism housing surmounting the first column, a first pair of second hollow columns mounted on and extending angularly from the first operating mechanism housing, a second operating mechanism housing surmounting each of the second hollow columns, a pair of V-shaped double-break arc-extinguishing interrupting units mounted on and extending angularly from each second mechanism housing, mechanical means comprising interconnecting insulating operating rods extending through the columns for actuating the units and comprising motion transfer means in the operating mechanism housings for interconnection of the operating rods, the mechanical means being coupled with the units to simultaneously actuate the units in a transmission-line circuit, and one of the arc extinguishing interrupting units on one of the second mechanism housings and one of the arc extinguishing units on the other of the second operating mechanism housings being interconnected and forming a rectangular assembly with said second hollow columns.

2. A structure as claimed in claim 1 wherein each of the arc-extinguishing units is a puffer-type interrupting unit.

3. A structure as claimed in claim 1 to 2 wherein the first operating mechanism housing includes motion transfer means consisting of a bell-crank operating mechanism in which an insulating operating rod in the first column is mechanically linked to two angularly-extending second insulating operating rods in the second columns.

4. A structure as claimed in claim 1, wherein the first mechanism housing disposed at the upper end of the first column has bell-cranks associated therewith which transmit the motion of a single first insulating operating rod to two angularly-extending second insulating operating rods.

5. A structure as claimed in claim 3, wherein each of the second insulating operating rods mechanically operates a common linkage structure disposed at the outer free ends of the second hollow columns.

6. A high-voltage multibreak circuit interrupting assemblage structure, constructed and adapted for use substantially as herebefore described and illustrated with reference to the accompanying drawings.