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US3007021A - Servicing device for handling a circuit-interrupting assembly - Google Patents

Servicing device for handling a circuit-interrupting assembly Download PDF

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Publication number
US3007021A
US3007021A US845547A US84554759A US3007021A US 3007021 A US3007021 A US 3007021A US 845547 A US845547 A US 845547A US 84554759 A US84554759 A US 84554759A US 3007021 A US3007021 A US 3007021A
Authority
US
United States
Prior art keywords
circuit
assemblage
mono
rail
interrupting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US845547A
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English (en)
Inventor
Thomas O Prunty
Jr Robert G Colclaser
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Priority to US845547A priority Critical patent/US3007021A/en
Priority to DEW28589A priority patent/DE1263896B/de
Priority to CH1076360A priority patent/CH387129A/de
Application granted granted Critical
Publication of US3007021A publication Critical patent/US3007021A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/02—Details
    • H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
    • H01H33/56—Gas reservoirs
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
    • H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
    • H02B13/035—Gas-insulated switchgear

Definitions

  • This invention relates to a mono-rail device for handling a circuit-interrupting assembly, and more particularly to improved constructional features for such a mono-rail servicing device.
  • a general object of the invention is to provide an improved mono-rail device for handling the interrupting assembly of a circuit interrupter so that a minimum of manpower need be provided to properly handle the device.
  • a more specific object of the present invention is to provide an improved two part mono-rail device, which is inexpensive, light to handle, and is highly efiicient in effecting the removal of a circuit-interrupting assemblage from an enclosing tank, or inserting the circuitinterrupting assemblage into the enclosing tank for operation.
  • Another object of the present invention is to provide an improved mono-rail device, of two-part construction, for handling a circuit-interrupting assemblage, in which one of the parts is provided with lifting lugs for facilitating handling and maintenance operations upon the circuit-interrupting assemblage following its withdrawal from the circuit-interrupting tank.
  • Another object of the present invention is to provide simplified and improved constructional features for such a mono-rail device whereby proper handling of the circuit-interrupting assemblage may be obtained without the danger of the assemblage slipping off of the monorail device.
  • FIGURE 1 is an end elevational view of a three-pole circuit interrupter, with which the mono-rail handling device of the invention may be used;
  • FIG. 2 is a longitudinal sectional view taken through one of the three tank housings, showing the disposition of the interiorly disposed arc-extinguishing assemblage, with the contact structure shown in the closed-circuit position;
  • FIG. 3 is a somewhat diagrammatic view indicating the manner in which the two-part mono-rail handling device of the present invention is bolted into position, and illustrating how the circuit-interrupting assemblage may be withdrawn out of the tank structure;
  • FIG. 4 is a fragmentary detailed view showing how the mono-rail device may be bolted into position, and taken generally along the line IVIV of FIG. 3;
  • FIG. 5 is an enlarged, perspective, detailed view showing how the two-part mono-rail device may be positioned in end-to-end relationship;
  • FIG. 6 is a fragmentary, detailed view showing how a circuit-interrupting assemblage may be fixedly mounted into position upon the removable mono-rail part;
  • FIG. 7 is a sectional, detailed view showing how the supporting feet for the mono-rail device may be adjustably arranged.
  • FIG. 8 illustrates another sectional detailed view of a modified type of mounting feet, which may be used in place of the mounting feet illustrated in FIG. 7.
  • the reference numeral 1 generally designates a three-pole circuit interrupter, including three laterally spaced metallic grounded tanks 2, within each of which is disposed an arc-extinguishing assemblage 3, shown more clearly in FIG. 2 of the drawings.
  • each tank 2 has upper mounting extensions 4, to the upper ends of which are clamped spaced lineterminal bushings, generally designated by the reference numeral 5.
  • Line connections L and L are atfixed to the upper extremities of the terminal bushings 5, as well known by those skilled in the art.
  • a mechanism housing compartment 6 Secured to the end tank structure 2 is a mechanism housing compartment 6, within which may be disposed a suitable operating mechanism, which is required to effect simultaneous contact movement within each of the three tank structures 2.
  • a high-pressure reservoir chamber 13 Disposed interiorly within the tank structure 2 is a high-pressure reservoir chamber 13, a blast-valve mechanism, generally designated by the reference numeral 14, and three serially related arc-extinguishing units, designated by the reference numerals 15, 16 and 17.
  • An arc is drawn within each of the three arc-extinguishing units, and is extinguished by a flow of compressed gas from the high-pressure tank 13 by actuation of the blast-valve mechanism 14.
  • Blast tubes 18 and 19 are provided to conduct the high-pressure blast of gas to the separated contact structures.
  • the movable contact assemblage 20 generally comprises a pair of longitudinally extending insulating operating rods 21, which have bridging bars 22 extending therebetween.
  • the rod-shaped movable contacts, not shOWn, are secured to the mid portions of the bridging bars 22, and move with the movable contact assemblage 20.
  • the left-hand end bridging bar 22 is biased by an opening accelerating spring 23, which tends to bias the movable contact assemblage 24 in the opening direction, that is toward the left, as viewed in FIG. 2.
  • a suitable bumper 24 is provided to limit the leftward opening movement of the movable contact assemblage 20.
  • the movable contact assemblage 20 is latched in the closed-circuit position by the latching device associated with the mechanism, disposed within the mechanism compartment 6 (FIG. 1).
  • a high-pressure feed line 25 extends within the tank 2, and has an insulating tube extension 26 to conduct high-pressure gas into the highpressure tank reservoir 13.
  • the present invention is particularly concerned with the provision of an elongated removal device or a mono-rail device 33, comprising an I-beam or other elongated track structure, preferably of two-part construction, the interior part 32 of which is bolted to the lower feet 31 of the terminal bushings 5 in a manner more clearly shown in FIG. 4 of the drawings.
  • the interior part 32 of the mono-rail device 33 is detachably adjusted in end-to-end relation with the external part 34 of the mono-rail device 33 in a manner more clearly illustrated in FIG. 5 of the drawrngs.
  • a perforated bracket 35 is welded, as at 36, to the left-hand extremity of the external part 34 of the mono-rail device 33.
  • the perforated bracket 35 matches with upstanding pins 37 secured to the right-hand end of the interior part 32, so that the two parts 32 and 34 are disposed in endto-end relation, as indicated in FIG. 3 of the drawings.
  • Rollers 33 are associated with the circuit-interrupting assemblage 3, adjacent opposite ends thereof, as indicated in FIGS. 1 and 3 of the drawing.
  • the rollers 38 are mounted upon brackets 29, 3b which are formed as a part of the casting structures of the circuit-interrupting as serrrblage 3.
  • the outer external part 34 is positioned, as indicated in FIG. 3.
  • the circuitinterrupting assemblage 3 may then be rolled out of the tank 2 along the mono-rail device 33 to an external position, as indicated in FIG. 3.
  • the external part 3% is provided with lifting lugs 43, which may be lifted by chains extending from a suitable crane.
  • bolts 45 may extend through suitably provided apertures provided in the contact brackets 29, 30, and also through the web portion 46 of the I-beam mono-rail device 33, as indicated in FIG. 6 of the drawings.
  • each end foot 47 of the mono-rail device 33 may be adjustable, as indicated in FIG. 7 of the drawings. More particularly, each end foot 47 may include a two-part device, a lower foot portion 48 being perforated to receive a removable bolt 49, the upper end of the foot portion 48 sliding within a channel 50 provided in an upper foot portion 51.
  • the upper ends of the two feet 47 may be Welded to an end plate 52, the latter being suitably secured to the end of the external part 34 of the mono-rail device 33. Rollers 54 may also be provided.
  • rollers 54 are provided at the lower end of legs 55, the upper ends of which are welded to a perforated support plate 56.
  • the perforated support plate 56 may be adjustably secured to an end plate 57, likewise having holes, the plate 57 being welded to the end of the external part 34 of the mono-rail device 33.
  • an improved mono-rail handling device 33 particularly adapted for the servicing of an interrupting assembly 3, which is preferably handled as a unit. Since the circuit-interrupting assemblage 3 is periodically removed from the pole-unit for field inspection and maintenance, the employment of the present mono-rail device 33 results in rapid removal and insertion of the circuit-interrupting assemblage 3. Since the monorail device 33 is a two-part structure, the two parts thereof 32, 34 may be easily stored without taking up too much space. In addition, by having a two-part structure, each part is light in Weight, and only a single man is required for employing the device.
  • the two-section rail 33 may be formed of aluminum, and hence will be light to handle.
  • the outside removable portion of the rail 34 may be an integral portion of the interrupter assemblage 3 during assembly, or shipping, greatly facilitating handling.
  • the end support 47 for the two-section rail 33 is preferably adjustable, as shown in FIGS. 7 and 8, to allow for variations in height, and is more rigid.
  • the rollers 54 By employing the rollers 54, the device may enable a man to move the interrupter assembly 3 easily by a lift truck at one end and also obviates the necessity for crane facilities.
  • the shortened length of the pieces 32, 34 allows one man to handle, install, or remove the mono-rail device 33. Maintenance time is reduced, since only one man is required per pole-unit.
  • circuit-interrupter tank structure having a pair of terminal bushings extending therein, the interior end of each terminal bushing having a foot support, a circuit-interrupting assemblage having rollers bridging the two feet support and clamped thereto for normal operation, a removable mono-rail l-beam handling device bolted to the terminabbushing feet support to accommodate said rollers for rolling the circuit-interrupting assemblage as a unit externally of the tank structure for maintenance operation, and said mono-rail I- beam handling device being removed for normal circuitinterrupter operation.
  • a two-part mono-rail handling device having an internal part and an external part, a longitudinally extending circuit-interrupter tank having a pair of terminal bushings extending downwardly thereinto, each terminal bushing having a lower mounting foot, a unitary removable arc-extinguishing assemblage bridging the terminal-bushing feet and clamped thereto, means for detachably bolting said internal part of the monorail handling device to the terminal-bushing mounting fee a d means for sliding the circuit-interrupting assemblage out of the tank onto the external part of the mono-rail handling device.
  • a two-part mono-rail handling device having an internal part and an external part, a longitudinally extending circuit-interrupter tank having a pair of terminal bushings extending downwardly thereinto, each terminal bushing having a lower mounting foot, a unitary removable arc-extinguishing assemblage having rollers bridging the terminal-bushing feet and clamped thereto, means for detachably bolting said internal part of the mono-rail handling device to the terminal-bushing mounting feet, and means for rolling the circuit-interrupting assemblage out of the tank onto the external part of the mono-rail handling device.
  • a two-part mono-rail handling device having an internal part and an external part with lifting lugs, a longitudinally extending circuit-interrupter tank having a pair of terminal bushings extending downwardly thereinto, each terminal bushing having a lower mounting foot, a unitary removable arc-extinguishing assemblage bridging the terminal-bushing feet and clamped thereto, means for detachably bolting said internal part of the mono-rail handling device to the terminal-bushing mounting feet, and means for sliding the circuit-interrupting assemblage out of the tank onto the external part of the mono-rail handling device.
  • a two-part mono-rail handling device having an internal part and an external part, a longitudinally extending circuit-interrupter tank having a pair of terminal bushings extending downwardly th-ereinto, each terminal bushing having a lower mounting foot, a unitary removable arc-extinguishing assemblage bridging the terminal-bushing feet and clamped thereto for support, means for detachably bolting said internal part of the mono-rail handling device to the terminal-bushing mounting feet, means for sliding the circuit-interrupting assemblage out of the tank onto the external part of the mono-rail handling device, and end feet for the external part of the mono-rail handling device.
  • a circuit-interrupter housing terminal bushing supporting means for supporting an arc-extinguishing assemblage within said circuit-interrupter housing, an elongated removal device adapted to be removably secured to said terminal bushing supporting means during maintenance periods, the arc-extinguishing assemblage moving along the removal device to a position externally of the circuit interrupter housing, and the elongated removal device being removed during normal operation of the arc-extinguishing assemblage.
  • a circuit interrupter tank an arcextinguishing assemblage, a pair of terminal bushings extending within said tan-k for supporting said arc-extinguishing assemblage, an elongated removal device adapted to be removably secured to the interior ends of said terminal bushings during maintenance periods, and the arc-extinguishing assemblage moving along the removal device being supported thereby to a position externally of the tank.
  • a grounded circuit-interrupter tank an arc-extinguishing assemblage, a pair of terminal bushings extending within said grounded tank for supporting said arc-extinguishing assemblage, an elongated track removal device of metallic material adapted to be removably bolted to the interior ends of said terminal bushings during maintenance periods, and the arc-extinguishing as semblage, following unfastening from the terminal bushings, moving along the elongated track removal device and supported thereby to a position externally of the grounded tank.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Gas-Insulated Switchgears (AREA)
US845547A 1959-10-09 1959-10-09 Servicing device for handling a circuit-interrupting assembly Expired - Lifetime US3007021A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US845547A US3007021A (en) 1959-10-09 1959-10-09 Servicing device for handling a circuit-interrupting assembly
DEW28589A DE1263896B (de) 1959-10-09 1960-09-20 Elektrischer Schalter mit Lichtbogenloeschung durch Druckgas
CH1076360A CH387129A (de) 1959-10-09 1960-09-23 Elektrischer Schalter mit einem geerdeten Gehäuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US845547A US3007021A (en) 1959-10-09 1959-10-09 Servicing device for handling a circuit-interrupting assembly

Publications (1)

Publication Number Publication Date
US3007021A true US3007021A (en) 1961-10-31

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US845547A Expired - Lifetime US3007021A (en) 1959-10-09 1959-10-09 Servicing device for handling a circuit-interrupting assembly

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Country Link
US (1) US3007021A (de)
CH (1) CH387129A (de)
DE (1) DE1263896B (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300609A (en) * 1963-05-15 1967-01-24 Ass Elect Ind Switchgear for high voltage power circuits with removable vacuum switch units
US3792213A (en) * 1970-10-30 1974-02-12 Westinghouse Electric Corp High-voltage circuit interrupter incorporating series vacuum interrupter elements
US3852549A (en) * 1973-07-18 1974-12-03 Allis Chalmers Plug-in contact and blast valve unit
US3864534A (en) * 1973-07-18 1975-02-04 Allis Chalmers Modular gas insulated circuit breaker system
US4007346A (en) * 1973-11-27 1977-02-08 Sprecher & Schuh Ag Encapsulated switching installation
US4117289A (en) * 1975-11-24 1978-09-26 Allis-Chalmers Corporation Single tank multibreaker circuit interrupter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH338508A (de) * 1955-12-22 1959-05-31 Bbc Brown Boveri & Cie Gekapseltes Schaltfeld
US2921998A (en) * 1958-05-02 1960-01-19 Ite Circuit Breaker Ltd Four position drawout circuit breaker

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH338508A (de) * 1955-12-22 1959-05-31 Bbc Brown Boveri & Cie Gekapseltes Schaltfeld
US2921998A (en) * 1958-05-02 1960-01-19 Ite Circuit Breaker Ltd Four position drawout circuit breaker

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3300609A (en) * 1963-05-15 1967-01-24 Ass Elect Ind Switchgear for high voltage power circuits with removable vacuum switch units
US3792213A (en) * 1970-10-30 1974-02-12 Westinghouse Electric Corp High-voltage circuit interrupter incorporating series vacuum interrupter elements
US3852549A (en) * 1973-07-18 1974-12-03 Allis Chalmers Plug-in contact and blast valve unit
US3864534A (en) * 1973-07-18 1975-02-04 Allis Chalmers Modular gas insulated circuit breaker system
US4007346A (en) * 1973-11-27 1977-02-08 Sprecher & Schuh Ag Encapsulated switching installation
US4117289A (en) * 1975-11-24 1978-09-26 Allis-Chalmers Corporation Single tank multibreaker circuit interrupter

Also Published As

Publication number Publication date
DE1263896B (de) 1968-03-21
CH387129A (de) 1965-01-31

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