EP1730752B1 - Systeme a chambres multiples servant de reservoir de compensation de liquide et son utilisation - Google Patents

Systeme a chambres multiples servant de reservoir de compensation de liquide et son utilisation Download PDF

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Publication number
EP1730752B1
EP1730752B1 EP05728337.6A EP05728337A EP1730752B1 EP 1730752 B1 EP1730752 B1 EP 1730752B1 EP 05728337 A EP05728337 A EP 05728337A EP 1730752 B1 EP1730752 B1 EP 1730752B1
Authority
EP
European Patent Office
Prior art keywords
chamber
liquid
pipeline
monitoring
gas volume
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.)
Not-in-force
Application number
EP05728337.6A
Other languages
German (de)
English (en)
Other versions
EP1730752B8 (fr
EP1730752A1 (fr
Inventor
Markus Baumann
Manfred Britting
Thomas Weike
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.)
Siemens AG
Mahle Industrial Thermal Systems GmbH and Co KG
Original Assignee
Siemens AG
Behr Industrieanlagen GmbH and Co KG
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 Siemens AG, Behr Industrieanlagen GmbH and Co KG filed Critical Siemens AG
Publication of EP1730752A1 publication Critical patent/EP1730752A1/fr
Publication of EP1730752B1 publication Critical patent/EP1730752B1/fr
Application granted granted Critical
Publication of EP1730752B8 publication Critical patent/EP1730752B8/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H01F27/10—Liquid cooling
    • H01F27/12—Oil cooling
    • H01F27/14—Expansion chambers; Oil conservators; Gas cushions; Arrangements for purifying, drying, or filling

Definitions

  • liquid cooling circuits e.g. Oil circuits
  • the transformer oil expands due to the heating and is collected above the transformer via an oil line in an oil conservator, which is also partially filled with transformer oil.
  • a so-called Buchholz relay is often arranged, in the Buchholz relay the forming in the transformer gas are measured and when exceeding a predetermined gas volume, the shutdown of the transformer is triggered.
  • a large volume of gas is a common indication of a malfunction within the transformer.
  • DIN 42566 the triggering of a warning message by means of a Buchholz relay is required for the operation of an oil-cooled transformer when a given gas volume within the system is exceeded.
  • the achievement of the predetermined gas volume is detected within the Buchholz relay as a corresponding expansion vessel and gas collection container, which is connected upstream of an actual liquid expansion vessel.
  • the GB 24,117 discloses a surge tank for oil-insulated electrical machines, in particular transformers, in which produce with a gas-filled connections between different balancing chambers of the expansion tank, a hydraulic connection. As a result, in particular a contact of the oil located in the transformer should be prevented with the outside air.
  • GB 24,117 discloses the preamble of claim 1.
  • the DE 196 36 456 A1 discloses a device for foreign gas remote control of systems with temperature-variable volume, in particular electrical transformers, connected to an integrated device for isolierckenkeitstemperaturparen or - independent pressure influencing.
  • the invention described therein has an expansion vessel, that between the insulating liquid and the outside air or a gas cushion, a membrane is arranged, which prevents a direct exchange of outside air with the cooling circuit.
  • the GB318397 discloses an expansion vessel for transformers in which an elastic membrane in the expansion vessel separates the liquid surface from a gas cushion and thus prevents air exchange with the outside air.
  • a disadvantage of this prior art is that with an excessive increase in the gas volume within the transformer no shutdown mechanism is provided, since the systems described above are designed only for a completely liquid-filled cooling circuit.
  • the GB368264 describes an expansion tank for transformers in which a mutually stepped multi-chamber system prevents the outside air from entering the cooling circuit.
  • the disadvantage here however, that this system only works in a dormant Intertialsystem, since at an acceleration of the expansion vessel, the liquid columns can move against each other and thus penetration of outside air into the cooling circuit is possible.
  • the object of the present invention is to avoid the above-mentioned disadvantages in the prior art and to provide an expansion vessel that can also be operated in an accelerated system.
  • a first piping system connects the first chamber to a fluid system
  • a second piping connects the first chamber to at least one further, second chamber
  • the second piping system is arranged in the second chamber such that at existing liquid in the second chamber of the fluid pressure generated thereby also in the second piping system and the second piping system is arranged in the first chamber, that only at a complete filling of the first chamber with a liquid, the second piping system is also completely filled with a liquid and so that a hydraulic connection between the fluid system with the second chamber is formed.
  • the opening of the second pipeline system is arranged in the upper region of the first chamber.
  • a further advantage is that at least one membrane in the second chamber seals the surface of the liquid against the gas phase in the second chamber.
  • the first chamber disposed within the second chamber, wherein the chambers are rotationally symmetrical and the surface of the liquid is sealed in the second chamber by a rotationally symmetric membrane close to the gas phase in the second chamber.
  • This arrangement of the chambers makes it possible to use a single membrane, for example in the form of a ring.
  • the membrane is elastic.
  • holders on the inner wall of the second chamber fix the membrane.
  • tightly sealed guide rails on the inner wall of the second chamber guide the membrane corresponding to the liquid surface in the second chamber.
  • the cross sections and / or the heights of the piping systems are designed and designed as a function of the maximum in the first chamber with respect to the possible fluid pressure.
  • a dehumidifier reduces the moisture in the gas phase in the second chamber, so that the membrane top side is not attacked chemically-physically by moisture in the gas phase.
  • the invention provides a system for monitoring a gas volume in a liquid-filled system (9), in particular a transformer, provided that at least one multi-chamber system, a liquid system and a device for monitoring the gas volume, in particular a Buchholz relay comprises, the system via a fluid system with the device for monitoring the gas volume and the multi-chamber system is connected.
  • the multi-chamber system of the device for monitoring the volume of gas downstream.
  • a further advantage is the use of the multi-chamber system as an expansion vessel for liquid-cooled systems, in particular transformers, in a means of transport. Furthermore, it is preferable to use the system for monitoring a gas volume in a means of transport. By accelerating the means of transport a nearly leveled liquid column in the expansion vessel is not given, so that in this case considerable pressure fluctuations can occur and outside air can enter the liquid cooling system.
  • the multi-chamber system according to the invention offers the advantage that even in an accelerated system, such as e.g. a vehicle, the use of a fluid system for a transformer is possible. Furthermore, the ingress of air or gases from the outside of the system - even with accelerations - prevented.
  • FIG. 1 an inventive multi-chamber system 1 is shown.
  • the first chamber 2 is arranged in the second chamber 3 and both chambers 2, 3 are connected to one another via a second pipeline system 5.
  • a first piping system 4 is connected to a fluid system 10.
  • the first chamber 2 is completely filled with liquid, preferably with a cooling liquid, e.g. Transformer oil, filled.
  • the second piping system 5 is arranged in the first chamber 2 so that liquid can be moved between the first and second chambers 2, 3 exclusively via the upper opening of the second piping system 5, the opening being arranged closely below the upper ceiling of the first chamber 2 is. In a complete filling of the first chamber 2 with a liquid in this case, only a hydraulic connection between the second container 3 and the cooling system via the liquid system 10 is made.
  • the dehumidifier 7 serves to reduce the degree of humidity of the gas phase above the liquid surface.
  • At least one membrane 6a, 6b is furthermore provided, which seals the liquid in the second chamber 3 in a sealed and hermetic manner with respect to the gas phase.
  • the membrane 6a is fixed by means of holders 8 on the inner wall of the second chamber 3.
  • the elastic membrane 6a deforms in accordance with the liquid movements in the second chamber 3 and thus allows a liquid equalization within the multi-chamber system 1 and thus the liquid system 10 without the air or gases can get in there.
  • the diffusion of air or gases from the gas phase of the second chamber 3 is prevented in the liquid of the second chamber 3 with this multi-chamber system 1 according to the invention.
  • the dehumidifier 7 serves to reduce the degree of humidity of the gas phase above the liquid surface or above the membrane surface 6a.
  • the Fig. 2 shows a schematic representation of the system according to the invention for monitoring a gas volume in a liquid-filled plant 9, for example a transformer.
  • the resulting in the liquid-filled system 9 gases are forwarded in a fluid system 10 to a Buchholz relay 11.
  • the resulting gas volume is monitored in the Buchholz relay.
  • the multi-chamber system 1 is coupled to the fluid system as an expansion vessel.
  • the position of the multi-chamber system 1 relative to the transformer 9 or relative to the Buchholz relay 11 is arbitrary, since the pressure equalization in the second chamber 3 (not shown) with the fluid system 10 due to a hydraulic connection.
  • the system is therefore also suitable for operation in accelerated systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)
  • Cooling Or The Like Of Electrical Apparatus (AREA)
  • Drying Of Gases (AREA)

Claims (11)

  1. Système (1) à plusieurs chambres comme vase de dilatation à liquide,
    dans lequel dans une première chambre (2) un premier système de câble de canalisation met la première chambre (2) en communication avec un système (10) à liquide, ainsi qu'un deuxième système (5) de canalisation met la première chambre (2) en communication avec au moins une autre deuxième chambre (3) caractérisé, en ce que,
    le deuxième système (5) de canalisation est disposé dans la deuxième chambre (3) de manière à ce que, si du liquide est présent dans la deuxième chambre (3) la pression de liquide produite ainsi est présente également dans le deuxième système (5) de canalisation et le deuxième système de canalisation est disposé dans la première chambre (2) de manière à ce que, ce n'est que si la première chambre (2) est emplie complètement d'un liquide que le deuxième système (5) de canalisation est empli également complètement d'un liquide et ainsi qu'un échange de liquide au sein du système (1) à plusieurs chambres et ainsi du système (10) de liquide est possible et il se crée ainsi une liaison hydraulique entre le système (10) à liquide et la deuxième chambre, (3) au moins une membrane (6a) dans la deuxième chambre (3) fermant de manière étanche la surface du liquide par rapport à la phase gazeuse de la deuxième chambre (3).
  2. Système (1) à plusieurs chambres suivant la revendication 1, caractérisé en ce que l'ouverture du deuxième système (5) de canalisation est disposée dans la partie supérieure de la première chambre (2).
  3. Système (1) à plusieurs chambres suivant la revendication 2, caractérisé en ce que la première chambre (2) est disposée à l'intérieur de la deuxième chambre (3), les chambres (2, 3) étant de révolution et la surface du liquide dans la deuxième chambre (3) est fermée par une membrane (6a) de révolution, fermée de manière étanche par rapport à la phase gazeuse de la deuxième chambre (3).
  4. Système (1) à plusieurs chambres suivant l'une des revendications 2 ou 3, caractérisé en ce que la membrane (6a) est élastique.
  5. Système (1) à plusieurs chambres suivant l'une des revendications 2 à 4, caractérisé en ce que des fixations (8) sur la paroi intérieure de la deuxième chambre (3) immobilisent la membrane (6a) ou des rails de guidage, fermant de manière étanche, sur la paroi intérieure de la deuxième chambre (3) guident la membrane (6a) en correspondance à la surface de liquide dans la deuxième chambre (3)
  6. Système (1) à plusieurs chambres suivant l'une des revendications 1 à 5, caractérisé en ce que les sections transversales et/ou les hauteurs des systèmes (4,5) de canalisation sont conçues en fonction de la pression du liquide possible au maximum dans la première chambre (2)
  7. Système (1) à plusieurs chambres suivant l'une des revendications 1 à 6, caractérisé en ce qu'un déshumidificateur (7) d'air réduit l'humidité de la phase (12) gazeuse de la deuxième chambre (3)
  8. Système de contrôle d'un volume de gaz dans une installation (9) emplie de liquide, notamment dans un transformateur, comprenant au moins un système (10) de liquide et un dispositif (11) de contrôle du volume de gaz, notamment un relais Buccholz, l'installation (9) communiquant par un système (10) à liquide avec le dispositif (11) de contrôle du volume de gaz et avec le système (1) à plusieurs chambres.
  9. Système suivant la revendication 8, caractérisé en ce que le système (1) à plusieurs chambres est monté en aval du dispositif (11) de contrôle du volume de gaz.
  10. Utilisation du système (1) à plusieurs chambres suivant l'une des revendications 1 à 7 comme vase de dilatation pour des installations (9) refroidies par des liquides, notamment des transformateurs, dans un moyen de transport.
  11. Utilisation du système de contrôle d'un volume de gaz suivant l'une des revendications 8 ou 9 dans un moyen de transport.
EP05728337.6A 2004-03-31 2005-03-18 Systeme a chambres multiples servant de reservoir de compensation de liquide et son utilisation Not-in-force EP1730752B8 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004016583A DE102004016583B3 (de) 2004-03-31 2004-03-31 Mehrkammersystem als Flüssigkeitsausgleichsgefäß und deren Verwendung
PCT/DE2005/000518 WO2005096329A1 (fr) 2004-03-31 2005-03-18 Systeme a chambres multiples servant de reservoir de compensation de liquide et son utilisation

Publications (3)

Publication Number Publication Date
EP1730752A1 EP1730752A1 (fr) 2006-12-13
EP1730752B1 true EP1730752B1 (fr) 2016-08-31
EP1730752B8 EP1730752B8 (fr) 2016-10-05

Family

ID=34964363

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05728337.6A Not-in-force EP1730752B8 (fr) 2004-03-31 2005-03-18 Systeme a chambres multiples servant de reservoir de compensation de liquide et son utilisation

Country Status (6)

Country Link
US (1) US20070241115A1 (fr)
EP (1) EP1730752B8 (fr)
JP (1) JP4335943B2 (fr)
CN (1) CN101048829B (fr)
DE (1) DE102004016583B3 (fr)
WO (1) WO2005096329A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006083809A (ja) * 2004-09-17 2006-03-30 Yamaha Motor Co Ltd エンジン駆動式乗り物用オイルタンク
US20070129902A1 (en) * 2005-08-05 2007-06-07 Orbell Richard Electronic module mounting means
EP3109871B1 (fr) 2015-06-25 2020-08-19 ABB Power Grids Switzerland AG Agencement de transformateur pour contrôler la pression dans un transformateur rempli de liquide
DE102018207847A1 (de) * 2018-05-18 2019-11-21 Siemens Aktiengesellschaft Fahrzeugtransformator
CN109555857A (zh) * 2018-12-29 2019-04-02 昆山瑞普电气有限公司 变压器油内密封膨胀结构
DE102020205660A1 (de) * 2020-05-05 2021-11-11 Deere & Company Kraftstofftank für ein Fahrzeug

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GB191324117A (en) * 1912-10-24 1914-02-26 Siemens Schuckertwerke Gmbh Improvements in or relating to Oil-insulated Electrical Apparatus, such for instance as Transformers.
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Also Published As

Publication number Publication date
WO2005096329A1 (fr) 2005-10-13
JP4335943B2 (ja) 2009-09-30
CN101048829A (zh) 2007-10-03
JP2007531291A (ja) 2007-11-01
CN101048829B (zh) 2010-06-23
EP1730752B8 (fr) 2016-10-05
US20070241115A1 (en) 2007-10-18
EP1730752A1 (fr) 2006-12-13
DE102004016583B3 (de) 2006-03-09

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