Recirculating Systems Patents (Class 218/83)
  • Patent number: 12266496
    Abstract: A hydraulic multi-pole actuation system opens all poles of a circuit interrupter simultaneously. The system utilizes Thomson coil arrangements with a wide piston attached to the conductive member of each arrangement. A narrow piston is attached to the movable conductor of each pole assembly in the circuit interrupter. The wide and narrow pistons are contained within a hydraulic tank. Activating the Thomson coils causes the wide pistons to displace the hydraulic fluid, and the displaced fluid pushes against the narrow pistons to cause the movable conductors to open the line connections in their respective pole assemblies. The wide pistons have a greater collective surface area that interfaces with the hydraulic fluid than the narrow pistons do, enabling fewer Thomson coils arrangements to be used than there are poles in the circuit interrupter, and enabling movement of the wide pistons to be amplified during translation into movement of the narrow pistons.
    Type: Grant
    Filed: April 28, 2023
    Date of Patent: April 1, 2025
    Assignee: EATON INTELLIGENT POWER LIMITED
    Inventors: Jayaraman Muniyappan, Santhosh Kumar Chamarajanagar Govinda Nayaka, Robert Michael Slepian
  • Patent number: 12249814
    Abstract: A valve gas filter includes: a valve box attached to a gas enclosing port connected to a gas-insulated device to be filled with an insulating gas and hermetically sealed; and a valve body that opens and closes a gas passage by moving in the valve box, in which the valve body includes a gas filter, which is formed by a porous insulating material and allows passage of an insulating gas but does not allow passage of foreign matter contained in the insulating gas.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: March 11, 2025
    Assignee: Mitsubishi Electric Corporation
    Inventor: Kazuya Katayama
  • Patent number: 11996251
    Abstract: A medium or high voltage electrical device and method of maintaining the composition of an insulating gas mixture in a medium or high voltage electrical device, where the device comprises a sealed chamber, said sealed chamber comprising electrical components; a gas mixture ensuring electrical insulation and/or extinguishing of electrical arcs produced in this chamber, wherein the gas mixture comprises at least one insulating gas and at least one dilution gas; and a receptacle, said receptacle comprising an opening, at least one wall, wherein at least one wall is a heatable wall, and wherein said receptacle is positioned to receive liquefied gas; the device further comprising a heating element for heating the heatable receptacle wall; and a dielectrically and thermally insulating layer located between the heatable receptacle wall and the chamber.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: May 28, 2024
    Assignee: GE INFRASTRUCTURE TECHNOLOGY LLC
    Inventors: Yannick Kieffel, François Biquez, Thomas Berteloot
  • Patent number: 11509121
    Abstract: An electrical energy transmission device for the transmission of electrical energy has a fluid-holding chamber. An electrically insulating fluid is contained in the fluid-holding chamber. The electrically insulating fluid is, at least in part, air-drawn from the surroundings of the electrical energy transmission device. The insulating fluid is used for insulating phase conductors in order to avoid short circuit conditions.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: November 22, 2022
    Assignee: Siemens Aktiengesellschaft
    Inventors: Sascha Bauer, Bernhard Lutz, Frank Ehrlich
  • Patent number: 10914424
    Abstract: A service device for a multi-component insulating gas for use during maintenance of electrical switchgear systems comprising a compressor with a downstream condenser, a storage container, the service device is connected to a system space, and the compressor compresses the insulating gas during removal from the system space, all components of the insulating gas remain in the compressor in a gaseous state, the condenser is controlled by a controller so a condensation of the insulating gas occurs first in the storage container, a storage heating device is provided for the storage container, during filling of the system space the storage heating device heats the insulating gas to a temperature above the critical temperature of the insulating gas, wherein, a line heating device is provided which at least partially heats the pipeline between the storage container and the system space and/or heats elements in the pipeline.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: February 9, 2021
    Assignee: DILO ARMATUREN UND ANLAGEN GMBH
    Inventors: Peter Sieber, Robert Kohler, Mathias Gestle
  • Patent number: 9991064
    Abstract: A sulfur hexafluoride (SF6) insulated circuit breaker system has a tank constructed to hold a quantity of SF6; a circuit breaker having contacts insulated by the SF6; a heater operative to supply heat to the SF6; and a thermal capacitor in conductive engagement with the tank, and operative to store heat energy and constructed to conduct the heat energy to the SF6 in the tank. A thermal energy storage system for a sulfur hexafluoride (SF6) insulated circuit breaker system having a tank storing a quantity of SF6 includes a thermal capacitor operative to store heat energy and constructed to engage the tank and conduct the heat energy to the SF6 in the tank.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: June 5, 2018
    Assignee: ABB Schweiz AG
    Inventors: Paul Vladuchick, Matthew Cuppett, Mauricio Aristizabal
  • Patent number: 9754742
    Abstract: A gas circuit breaker includes a driving side electrode having a driving side main contact and a driving side arc contact, and a driven side electrode having a driven side main contact and a driven side arc contact in a sealed tank. The driving side electrode is connected to an operation device. The driven side electrode is coupled to a bidirectional driving mechanism unit. A sliding guide, on which the driven side main contact slides, is provided on an inner periphery side of the driven side main contact. The driven side main contact is energized by a coil spring in a direction of the sliding guide and has two contact surfaces. Only during normal conduction, one of the contact surfaces contacts a projected portion of the sliding guide and the other of the contact surfaces contacts the driving side main contact.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: September 5, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Masanao Terada, Katsuhiko Shiraishi, Yoichi Oshita
  • Publication number: 20070295692
    Abstract: Liquid-filled high voltage switching units and electrical components including a primary tank and a secondary tank that do not communicate with one another in normal operation.
    Type: Application
    Filed: June 22, 2006
    Publication date: December 27, 2007
    Inventors: Frank John Muench, Jerry Lee Corkan
  • Patent number: 6492609
    Abstract: A power station switch having high nominal current, the switch comprising a break chamber containing a dielectric gas under pressure and mounted inside a protective sheath which may optionally carry a general flow of cooling air, and a radiator/heat-exchanger situated outside said sheath and connected to said break chamber in which said gas under pressure is put into continuous circulation. Said gas under pressure as cooled in the radiator/heat-exchanger is returned to the break chamber via a metal case of the break chamber that is designed to be grounded.
    Type: Grant
    Filed: November 7, 2000
    Date of Patent: December 10, 2002
    Assignee: Alstom
    Inventors: François Biquez, Jean-Marc Willieme
  • Patent number: 6236562
    Abstract: The section of an electrical high-voltage system has a gas-filled housing of predominantly symmetrical design. Provided in the housing are a conductor extending along a plane of symmetry of the housing, and cooling means for producing a circulation flow which dissipates heat loss from the conductor. The cooling means contains two blowers. The blowers are arranged in the interior of the housing and designed in such a way that, during the operation of the system, two mirror-symmetrical circulation part flows are formed which are bounded by the plane of symmetry. These circulation part flows are in each case guided without recirculation along a housing side wall from the top of the housing or the bottom of the housing. By this means, the heat loss is given up particularly effectively to the housing side walls, and the conductor can be loaded with very high operating currents.
    Type: Grant
    Filed: December 23, 1999
    Date of Patent: May 22, 2001
    Assignee: Asea Brown Boveri AG
    Inventors: Günter Wilfert, Günter Kübler, Sacha Parneix, Enrico Malfa