EP1810303A2 - Heat exchanger for a transformer - Google Patents
Heat exchanger for a transformerInfo
- Publication number
- EP1810303A2 EP1810303A2 EP05813600A EP05813600A EP1810303A2 EP 1810303 A2 EP1810303 A2 EP 1810303A2 EP 05813600 A EP05813600 A EP 05813600A EP 05813600 A EP05813600 A EP 05813600A EP 1810303 A2 EP1810303 A2 EP 1810303A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- heat exchanger
- opening
- transformer
- heat
- temperature probe
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
- F28D2021/0031—Radiators for recooling a coolant of cooling systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2265/00—Safety or protection arrangements; Arrangements for preventing malfunction
- F28F2265/18—Safety or protection arrangements; Arrangements for preventing malfunction for removing contaminants, e.g. for degassing
-
- 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
Definitions
- the invention relates to a heat exchanger, in particular for a transformer, with a heat exchange medium, which can be passed through a feed element into a heat exchange element and out of the heat exchange element via a drain element, with a first temperature measurement of an inlet flow of the heat exchanger medium and with a heat exchanger second temperature measurement of a flow stream of the heat exchange medium.
- transformers can be used for a variety of applications.
- power transformers having a power to be transmitted of at least 5 MVA emit a considerable amount of heat during operation, which is usually emitted to the environment via heat exchangers.
- a cooling circuit is provided as a rule, so that the heat exchanger used can be arranged, if appropriate, also remotely from the transformer.
- a typical embodiment of such a heat exchange circuit provides that one or more heat exchangers, which are often of a similar design, are each supplied with heat exchange medium via a supply connection. A specially designed surface of the heat exchanger then ensures the best possible heat transfer
- the temperature measuring pipe pieces must be considered in the planning of the design of the transformer.
- the dimensions of the transformer with the heat exchanger will be correspondingly large.
- the heat exchanger according to the invention is characterized in that a first opening is arranged in the inlet element, which is the first temperature probe during operation of varnishtau ⁇ schers to a predetermined position in the inlet positi ⁇ onierbar, and that a second opening in the discharge element is arranged in in operation of the heat exchanger, a second temperature probe is positioned at a predetermined location in the outflow stream.
- the position of the temperature measurement is now directly at the inlet or at the outlet of the heat exchange medium at the heat exchanger, so that on This ensures that the temperatures of the heat exchange medium are measured in the heat exchanger itself. Possible sources of error or interference for the temperature measurement of the previous temperature measuring point outside the heat exchanger in the pipe sections to the points of the invention Wär ⁇ exchanger are avoided in this way.
- a venting device is arranged in the first opening.
- a venting device in the form of a vent cock or vent plug is attached to a geodetically high point of the heat exchanger.
- the first or the second ⁇ ff ⁇ tion a combined functional element with both functions receives.
- a dual-function element is that the emptying device is designed such that the temperature probe can be inserted through it or past it into the inlet or outlet element so that the relevant temperature probe reaches its predetermined position.
- the corresponding embodiments of the ventilation device are known to the person skilled in the art.
- first and / or the second opening has a sealing element, by means of which the corresponding temperature probe can be inserted in a heat-exchange-medium-tight manner.
- the immersion sleeve which has since been used, is avoided, which prevents an escape of heat exchange medium from a closed system prevented.
- the sole FIGURE shows a radiator 10 which serves as a recooler for a cooling circuit of a power transformer, wherein neither the power transformer, nor other details of the cooling circuit are shown in this figure.
- the power transformer which has been recooled with the cooler 10 has a power of about 15 MVA to be transmitted, in the example shown the single cooler 10 for the recooling of the heat produced by the power transformer being sufficiently dimensioned.
- the example shown shows the cooler 10 as a stationary heat exchanger, so that in the figure with bottom the geodetic "bottom” is meant Accordingly, in the figure above the radiator 10, an inlet nozzle 12 is shown, wherein the flow direction of einströ ⁇ ing coolant by a
- the first inlet 14 is formed as a pipe section, which is connected on the one hand to a radiator element 16 and on the other hand has a first flange 18, which in particular for direct Connection to the power transformer or a connecting pipe of the refrigerant circuit is provided.
- the inflowing coolant in this example a heat exchanger oil, which is frequently used in transformer cooling circuits, flows through the inlet connection 12 to the radiator element 16, the coolant flow being split over a plurality of fins 20 so that a plurality of partial coolant flows are created, from top to bottom go through the cooling element 16.
- the coolant partial flows In the lower region of the cooling element 16, the coolant partial flows in turn collect to a common outflow stream. This common drainage flow passes through an outlet connection 22 back to the power transformer or into the coolant circuit.
- the ribs 20 may be blown by the forced air flow, for example, by a forced flow of convention.
- fans not shown in this figure are used for this purpose, whose generated air flow is so strong that a desired temperature of the coolant is established in the outflow stream.
- a first opening 24 is arranged in the inlet connection 12.
- the first sealing element 26 is still shown, which is arranged in the first opening 24.
- a combined device comprising a venting element and a thermocouple can be inserted into the first opening 24 in a medium-tight manner. This -combined A / orrieHungHsHn-the-only-m-known.
- the venting device is necessary in particular when filling the coolant circuit or the radiator 10 in order to vent the air collecting at the highest points of the respective circuit or radiator 10, which air is gradually displaced by the cooling medium filled in the coolant circuit.
- the assumption of a further technical function, which can be realized according to the invention at the same location of the first opening 24, is the temperature measurement with a first thermoelectric sensor. ment.
- the first thermocouple can now be moved to a position in the pipe section of the inlet connection 12, which according to experience best corresponds to the actual inlet temperature of the cooler 10.
- the first sealing element 26 seals the first thermoelement in the region of the first opening 24 from a possible coolant outlet from the cooling system.
- the otherwise necessary immersion sleeve for sealing an opening in a pipeline is avoided.
- the measured value is measured directly by the thermocouple in the coolant and not indirectly via the material of the immersion sleeve and thus damped and delayed. In this way, the measurement has become more accurate and faster.
- an eyelet 28 is still shown, to which, for example when Montagear ⁇ the complete cooler 10 can be attached to a hoist. Due to the space-saving double function of temperature measurement and venting in the first opening 24, no further space is needed in the upper region of the cooling element 16 from a constructive point of view. Thus, there is also a larger design freedom, namely in a construction of the cooling element 16, for example in its upper region with a slope, as shown. This design takes into account in the example chosen a special spatial installation requirement at the place of installation of the radiator 10.
- a second opening -and-unit disposed at a location below position of the pipe section of the downcomer 22 30 ⁇ a-second seal element 32litis ⁇ -
- the ⁇ second ⁇ Dicht ⁇ ngs "glen ⁇ eTir 32 is configured with a resilient plastics material and closes the second Opening 30 is complete, so that no coolant can escape in the inner region of the cooling element 16 or the drain neck 22 even if no thermocouple is plugged in.
- the plastic mass is designed to be yielding and provided with a further opening through which the rod-like part of a second Thermocouple by the plastic material and the second opening 30 can be inserted and fixed in a desired Posi ⁇ tion.
- the rod-like part of the thermocouple is provided with a corresponding stop or with a corresponding screw.
- the thermocouple 34 is shown only symbolically darge.
- a third opening 36 is also arranged at a lower location of the radiator element 16, but spaced from the second opening 30 so far that the devices introduced into the openings 30, 36 do not influence or interfere.
- connection element 38 Connected to the third opening 36 is a connection element 38 which is suitable for receiving a release device, in this case a shut-off valve 40.
- the shut-off valve 40 is shown only as a symbol and is designed, for example, as a shut-off ball valve or shut-off slide.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cooling Or The Like Of Electrical Apparatus (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Transformer Cooling (AREA)
- Coils Or Transformers For Communication (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004054180A DE102004054180A1 (en) | 2004-11-10 | 2004-11-10 | Heat exchanger for a transformer |
PCT/EP2005/011876 WO2006050886A2 (en) | 2004-11-10 | 2005-11-07 | Heat exchanger for a transformer |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1810303A2 true EP1810303A2 (en) | 2007-07-25 |
EP1810303B1 EP1810303B1 (en) | 2017-07-12 |
Family
ID=36217269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05813600.3A Ceased EP1810303B1 (en) | 2004-11-10 | 2005-11-07 | Heat exchanger for a transformer |
Country Status (6)
Country | Link |
---|---|
US (1) | US9909825B2 (en) |
EP (1) | EP1810303B1 (en) |
CN (1) | CN101084560B (en) |
BR (1) | BRPI0517304A (en) |
DE (1) | DE102004054180A1 (en) |
WO (1) | WO2006050886A2 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009005924A1 (en) | 2008-06-16 | 2009-12-31 | Thermo- control Körtvélessy GmbH | Compensated thermocouple system |
DE102009015377B4 (en) * | 2008-06-27 | 2011-12-15 | André Meuleman | Cooling radiator for a transformer |
DE102016207393A1 (en) * | 2016-04-29 | 2017-11-02 | Siemens Aktiengesellschaft | Replacement transformer with modular design |
US10586645B2 (en) | 2017-08-14 | 2020-03-10 | Abb Power Grids Switzerland Ag | Transformer systems and methods for operating a transformer system |
CA3114378A1 (en) * | 2018-10-19 | 2020-04-23 | Abb Power Grids Switzerland Ag | Radiator for a transformer having improved cooling |
EP3855261B1 (en) * | 2020-01-27 | 2024-05-15 | ABB Schweiz AG | Determining control parameters for an industrial automation device |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2474155A (en) * | 1945-06-15 | 1949-06-21 | Julius F Melzer | Heating apparatus |
US3544938A (en) * | 1969-06-12 | 1970-12-01 | Tyee Construction Co | Sealed power transformer |
US3746079A (en) * | 1972-01-21 | 1973-07-17 | Black Sivalls & Bryson Inc | Method of vaporizing a liquid stream |
US4196408A (en) * | 1974-01-14 | 1980-04-01 | Rte Corporation | High temperature transformer assembly |
DE2938086C2 (en) * | 1979-09-20 | 1981-08-13 | Transformatoren Union Ag, 7000 Stuttgart | Temperature sensor for determining the coolant temperature in liquid-cooled transformers |
US4350838A (en) * | 1980-06-27 | 1982-09-21 | Electric Power Research Institute, Inc. | Ultrasonic fluid-atomizing cooled power transformer |
US4512387A (en) * | 1982-05-28 | 1985-04-23 | Rodriguez Larry A | Power transformer waste heat recovery system |
DE8911078U1 (en) * | 1989-09-16 | 1989-11-23 | MESSKO Albert Hauser GmbH & Co. KG, 6370 Oberursel | Immersion sensor for temperature measurements |
US5267606A (en) * | 1991-07-05 | 1993-12-07 | Roland Cassia | Vehicular flushing and draining apparatus and method |
US5613549A (en) * | 1994-11-21 | 1997-03-25 | Dolwani; Ramesh J. | Method and apparatus for selectively sealing and securing a sensor of a sealing plug to a part |
US5730208A (en) * | 1995-03-09 | 1998-03-24 | Barban; Reno L. | Biothermal and geothermal heat exchange apparatus for a ground source heat pump |
US5838881A (en) * | 1995-07-14 | 1998-11-17 | Electric Power Research Institute, Inc. | System and method for mitigation of streaming electrification in power transformers by intelligent cooling system control |
US5730356A (en) * | 1995-08-01 | 1998-03-24 | Mongan; Stephen Francis | Method and system for improving the efficiency of a boiler power generation system |
DE19609203A1 (en) * | 1996-03-09 | 1997-09-11 | Urich Manfred | Mechanical-electrical combination thermometer |
US6031722A (en) * | 1998-07-20 | 2000-02-29 | Centre D'innovation Sur Le Transport D'energie Du Quebec | Earth cooled distribution transformer system and method |
US20020021742A1 (en) * | 1998-11-10 | 2002-02-21 | Maskell Bruce W. | Manifold |
RU2002122748A (en) * | 2000-02-24 | 2004-03-10 | Юнифин Интернейшнэл, Инк. (Ca) | Method and system for cooling transformers |
US7549461B2 (en) * | 2000-06-30 | 2009-06-23 | Alliant Techsystems Inc. | Thermal management system |
DE10153933A1 (en) * | 2000-11-11 | 2002-05-29 | Rittal Gmbh & Co Kg | Circuit cabinet with air conditioning device has heat exchanger with earth heat exchanger device placed in ground forming closed circuit system with internal heat exchanger in cabinet |
US20020088242A1 (en) * | 2001-01-08 | 2002-07-11 | Williams Douglas P. | Refrigeration cooled transformer |
US6842718B2 (en) * | 2003-02-06 | 2005-01-11 | General Electric Company | Intelligent auxiliary cooling system |
US6742342B1 (en) * | 2003-05-13 | 2004-06-01 | Praxair Technology, Inc. | System for cooling a power transformer |
US7081802B2 (en) * | 2004-03-31 | 2006-07-25 | Praxair Technology, Inc. | System for cooling a power transformer |
US9784509B2 (en) * | 2011-05-27 | 2017-10-10 | The Board Of Trustees Of The University Of Illinois | Optimized heating and cooling system |
-
2004
- 2004-11-10 DE DE102004054180A patent/DE102004054180A1/en not_active Withdrawn
-
2005
- 2005-11-07 BR BRPI0517304-3A patent/BRPI0517304A/en not_active Application Discontinuation
- 2005-11-07 CN CN2005800384778A patent/CN101084560B/en not_active Expired - Fee Related
- 2005-11-07 WO PCT/EP2005/011876 patent/WO2006050886A2/en active Application Filing
- 2005-11-07 EP EP05813600.3A patent/EP1810303B1/en not_active Ceased
- 2005-11-07 US US11/660,943 patent/US9909825B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2006050886A2 * |
Also Published As
Publication number | Publication date |
---|---|
BRPI0517304A (en) | 2008-10-07 |
US9909825B2 (en) | 2018-03-06 |
WO2006050886A3 (en) | 2006-09-08 |
US20090000763A1 (en) | 2009-01-01 |
DE102004054180A1 (en) | 2006-05-11 |
WO2006050886A2 (en) | 2006-05-18 |
CN101084560B (en) | 2011-04-20 |
EP1810303B1 (en) | 2017-07-12 |
CN101084560A (en) | 2007-12-05 |
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