EP1943402A2 - Cloison pare-feu de transformateur avec ouies de refroidissement - Google Patents

Cloison pare-feu de transformateur avec ouies de refroidissement

Info

Publication number
EP1943402A2
EP1943402A2 EP06816547A EP06816547A EP1943402A2 EP 1943402 A2 EP1943402 A2 EP 1943402A2 EP 06816547 A EP06816547 A EP 06816547A EP 06816547 A EP06816547 A EP 06816547A EP 1943402 A2 EP1943402 A2 EP 1943402A2
Authority
EP
European Patent Office
Prior art keywords
firewall
panel
vented
fire
panels
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.)
Withdrawn
Application number
EP06816547A
Other languages
German (de)
English (en)
Inventor
Clement Hiel
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.)
Composite Support and Solutions Inc
Original Assignee
Composite Support and Solutions Inc
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 Composite Support and Solutions Inc filed Critical Composite Support and Solutions Inc
Publication of EP1943402A2 publication Critical patent/EP1943402A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/92—Protection against other undesired influences or dangers
    • E04B1/94—Protection against other undesired influences or dangers against fire
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C2/00—Fire prevention or containment
    • A62C2/06—Physical fire-barriers
    • A62C2/18—Sliding dampers
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H5/00—Buildings or groups of buildings for industrial or agricultural purposes
    • E04H5/02—Buildings or groups of buildings for industrial purposes, e.g. for power-plants or factories
    • E04H5/04—Transformer houses; Substations or switchgear houses
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air

Definitions

  • This invention relates to an improved firewall for protection of high-value and essential equipment such as high- voltage transformers in an electrical utility station.
  • Transformers of this type typically contain a flammable oil which can ignite into a dangerous fire in the event of a major short circuit or other equipment failure or environmental problems. Such fires can reach very high temperatures which can spread the fire to adjacent equipment such as other transformers, putting in jeopardy the ability of the utility service to provide electrical energy.
  • the improved firewall is made of cementitious inorganic composite material which has good insulation and fire-resistant properties.
  • the composite material is an inorganic phosphate cement as described in U.S. Patent 6,103,007, the disclosure of which is incorporated herein by reference.
  • the wall is preferably made in sections which are supported between spaced-apart vertically upstanding girders such as steel I beams. The beams are preferably protected by overlying sheets of glass-fiber fabric impregnated with the cementitious material.
  • the new feature to which this application is directed relates to firewalls with cooling vents to encourage flow of cooling air over the transformer during normal operation. The life expectancy of power-station high-voltage transformers depends largely on the transformer temperature during operation.
  • a firewall system comprising an upright firewall of inorganic cementitious material, preferably inorganic phosphate cement.
  • the firewall is supported between space-apart vertical beams.
  • the firewall has a vented portion which is normally open to enable a flow of cooling air.
  • a heat-activatable means is provided to close the vented portion should a fire occur.
  • FIG. 1 is a perspective view of three spaced-apart firewalls positioned on opposite sides of equipment (such as power-station transformers) to be protected;
  • FIG. 2 is a perspective view of a panel, partly broken away, the firewall having a plurality of vertically stacked such panels;
  • FIG. 3 is a top perspective view of the firewall;
  • FIG. 4 is a perspective view of a lower end of a firewall section as modified to include the cooling-vent panel of the present invention
  • HG. 5 is similar to FIG. 4, but shows the cooling vent in a closed position
  • FIG. 6 is a perspective view of a modified lower firewall panel for positioning above the cooling-vent panel
  • FIG. 7 is a front elevation of a lower end of a firewall stack; and [0014] FIG. 8 is a top view of the assembly shown in FIG. 7.
  • FIGS. 1-3 showing my earlier unvented firewall system as disclosed in the aforementioned PCT application, three spaced-apart firewall systems 10 are shown on opposite sides of equipment such as transformers 11 and 12 (shown simply as blocks) to be protected.
  • Each system has a firewall 13 which preferably comprises a vertically stacked plurality of firewall panels 14 made of inorganic cementitious material.
  • Firewall 13 is supported between girders such as vertically upstanding and spaced-apart I beams 15 having lower ends embedded in a concrete base
  • firewall panels 14 are about 5 feet high, 8 1 A feet wide, and 3 ⁇ ⁇ inches thick.
  • I beams 15 typically have flanges 18 which are spaced apart by 8 to 12 inches as shown in FIG. 3, and the panels are provided with hollow spacers 19 at opposite ends so the panels make a snug slip fit between the flanges when lowered between the I beams.
  • the spacers are preferably made of the same fire-resistant cementitious material from which the panels are made.
  • the firewall can be as tall as necessary to shelter the equipment being protected, and are typically 20 to 40 feet high, thus using four to eight stacked panels.
  • each firewall panel 14 comprises a vertically stacked series of elongated members 21 which are hollow, and of rectangular cross section as shown in FIG. 2.
  • Members 21 are made a glass-fiber fabric which is impregnated with inorganic cementitious material to provide a wall thickness of about 1 A inch. The outside dimensions of the member are typically about 3Vi by 5 inches.
  • a preferred material is an inorganic phosphate cement as described in the aforementioned U.S. Patent 6,103,007. This material has a long pot life after mixing to provide ample time for impregnating the glass-fiber fabric, is highly resistant to fire, and has good insulating properties.
  • Each member 21 can be formed by wrapping the impregnated fabric around a wood core or mandrel which is withdrawn after the cementitious material has hardened.
  • a plurality (typically twelve) of members 21 are then vertically stacked together, and wrapped with an outside layer 22 of glass-fiber fabric impregnated with the cementitious material to form a panel 14.
  • a lower end 23 of each panel is slightly concave, and an upper end 24 is slightly convex as shown in FIG. 2.
  • I beams 15 are also covered with a skin 25 of the cementitious- material-impregnated glass-fiber fabric.
  • the panels are vertically secured by threaded fasteners 27 extending through the I beam flanges and panels. Exposed portions of the fasteners are covered with a protective coating of the cementitious material.
  • FIGS. 4-8 An improved vented firewall 28 is shown in FIGS. 4-8.
  • Firewall 28 corresponds to the above-described 13 with the exception of the two lowermost panels 29 and 30, and the addition of a sliding panel 31.
  • Panels 29-31 are made of the above-described inorganic cementitious material.
  • Panel 29 generally corresponds to solid panels 14, with the exception that spacers 32 at opposite ends of the panel are extended downwardly to rest on a firewall base 33. As best seen in FIG. 6, each extended spacer defines a channel 34 extending to both ends of the spacer.
  • Panel 30 is positioned immediately below panel 29, and defines a multiplicity of venting openings 35, typically of square or rectangular shape. It is through these openings that cooling air is enabled to flow during normal transformer operation.
  • Sliding vent-closure panel 31 is solid, and is supported at its opposite ends in spacer channels 34 to be movable vertically between an upper vent-open position (FIG. 4) and a lower vent-closed position (FIG. 5). In moving between these positions, panel 31 rides along a pair of bearing-like and spaced-apart vertical bars secured to the front faces of panels 29 and 30.
  • Sliding panel 31 is normally held in the upper vent-open position by a pair of heat- activated trigger bars 38 made of a meltable material such as aerospace tooling wax (a machinable wax with a softening temperature of about 226 F, as available from Flexbar Machine Corporation, is satisfactory), or a low-melting-point eutectic metal.
  • the bars are vertically elongated, and of rectangular cross-section, to make a snug fit in channels 34.
  • the material of the trigger bars is selected to soften and melt at a temperature in the range of about 180°-200°F which is quickly reached in the event of a fire. When this occurs, the weight of panel 31 causes it to slide downwardly automatically to the vent-closed position, thereby blocking spreading of the fire.
  • the bars 38 tend to slump (under the weight of the panel) at normal temperatures, they can be stiffened with slender metal rods which will collapse when the bar material melts.
  • heating coils can be cast into the material of the trigger bars. Upon receipt of a signal from a smoke alarm, the coils are electrically activated to melt the bars.
  • firewall system for use with equipment such as heavy-duty power station electrical transformers.
  • the firewall system is vented to enable flow of cooling air over the transformers.
  • the cooling-air vents are automatically closed to prevent the fire from spreading.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Building Environments (AREA)

Abstract

cette invention concerne une cloison pare-feu ventilée haute sécurité (28) maintenue entre des colonnes ou des montants verticaux (15). La cloison pare-feu est faite d'un matériau à base de ciment inorganique, de préférence un ciment de phosphate inorganique. Des ouïes (35) laissent passer l'air à travers la cloison pare-feu en conditions normales de fonctionnement. En cas d'incendie, un dispositif à commande thermo-actionnable (35) ferme automatiquement les ouïes.
EP06816547A 2005-10-07 2006-10-10 Cloison pare-feu de transformateur avec ouies de refroidissement Withdrawn EP1943402A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US72458705P 2005-10-07 2005-10-07
PCT/US2006/039413 WO2007044676A2 (fr) 2005-10-07 2006-10-10 Cloison pare-feu de transformateur avec ouies de refroidissement

Publications (1)

Publication Number Publication Date
EP1943402A2 true EP1943402A2 (fr) 2008-07-16

Family

ID=37943458

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06816547A Withdrawn EP1943402A2 (fr) 2005-10-07 2006-10-10 Cloison pare-feu de transformateur avec ouies de refroidissement

Country Status (4)

Country Link
US (1) US20090158671A1 (fr)
EP (1) EP1943402A2 (fr)
CA (1) CA2624320A1 (fr)
WO (1) WO2007044676A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008034055B4 (de) * 2008-07-22 2014-05-08 Rittal Hof Gmbh & Co. Kg Sicherheitsraum
CN108505777A (zh) * 2017-10-26 2018-09-07 安徽华电工程咨询设计有限公司 装配式变电站新型主变防火墙结构
KR102494528B1 (ko) * 2022-07-29 2023-02-06 주식회사 타이가 에어돔의 방화장치

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3462890A (en) * 1968-01-25 1969-08-26 Susquehanna Corp Plastic article severing and insulating apparatus
US4147197A (en) * 1977-06-20 1979-04-03 Overhead Door Corporation Fire door and operator therefor
GB2218719A (en) * 1988-05-18 1989-11-22 A E Farr Limited Fire barriers
US5257641A (en) * 1992-08-07 1993-11-02 Sentry Technologies, Inc. Retrofittable fire-stop device
US5331946A (en) * 1992-10-02 1994-07-26 Khashayar Yamini Apparatus and method for sealing an opening in a fire partition through which a combustible conduit extends
DE4234800A1 (de) * 1992-10-15 1994-04-21 Schako Metallwarenfabrik Luftführungskanal mit einer eingesetzten Brandschutzklappe
FR2741270B1 (fr) * 1995-11-20 1998-01-16 Soc D Expl Du Parc Des Exposit Rideau coupe-feu
IES80741B2 (en) * 1997-06-30 1999-01-13 Noel Christopher Manning A fire-retardant roof construction
US5984044A (en) * 1998-07-31 1999-11-16 Christensen; Arthur E. Acoustical barrier wall with protective sleeves and method of assembly
US7413024B1 (en) * 2002-10-15 2008-08-19 Vulcan Fire Technologies, Inc. Self-closing vent assembly
AU2003900592A0 (en) * 2003-02-11 2003-02-27 Truss Holdings Pty Ltd Fire collar
DE102004029276A1 (de) * 2004-06-17 2006-01-12 Hilti Ag Vorrichtung zur Abschottung eines Leitungsstrangs
WO2006047644A2 (fr) * 2004-10-25 2006-05-04 Composite Support & Solutions, Inc. Cloisons pare-feu constituees de materiaux composites a base de ciment
US7689293B2 (en) * 2004-10-25 2010-03-30 Smart Door Systems, Inc. Active oxygen management, fire encirclement, and operational verification system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007044676A3 *

Also Published As

Publication number Publication date
WO2007044676A2 (fr) 2007-04-19
WO2007044676A3 (fr) 2007-11-29
US20090158671A1 (en) 2009-06-25
CA2624320A1 (fr) 2007-04-19

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