EP1096515A1 - Konditionierung von Flüssigkeit gefüllten Systemen im laufenden Betrieb und Vorrichtung zur Erreichung dieses Zieles - Google Patents

Konditionierung von Flüssigkeit gefüllten Systemen im laufenden Betrieb und Vorrichtung zur Erreichung dieses Zieles Download PDF

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Publication number
EP1096515A1
EP1096515A1 EP00115734A EP00115734A EP1096515A1 EP 1096515 A1 EP1096515 A1 EP 1096515A1 EP 00115734 A EP00115734 A EP 00115734A EP 00115734 A EP00115734 A EP 00115734A EP 1096515 A1 EP1096515 A1 EP 1096515A1
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EP
European Patent Office
Prior art keywords
drying
liquid
chamber
valve
water
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Withdrawn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
EP00115734A
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German (de)
English (en)
French (fr)
Inventor
Josef Altmann
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Individual
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Individual
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 Individual filed Critical Individual
Publication of EP1096515A1 publication Critical patent/EP1096515A1/de
Withdrawn legal-status Critical Current

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    • 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

  • the invention relates to the conditioning procedure, in particular with regard to Water content, gas and particle content, and a device for carrying it out this conditioning of liquid-filled systems, particularly suitable for electrical equipment with liquid-cellulose insulation systems such as these be used with power transformers.
  • the claim relates regardless of the conditioning of liquids and liquids related type in and out of service using the following described device.
  • the use of the device according to the invention in particular, but not limited to the drying of liquid-filled transformers with Cellulose insulation is based on the property of the transformers that through internal Processes Water is created or water penetrates from outside. The water becomes too over 95% stored in cellulose, but goes depending on the Temperature in the insulating liquid. This temperature dependent hike the water between solid insulation and liquid insulating agent can sufficient water content with increasing temperature to lose the necessary dielectric properties and thus to the collapse of the Device.
  • the device is constructed so that one in the device Cellulose pack is located using the mechanisms described below is subjected to the cycles shown above.
  • drying according to the invention is particularly the fact that in this way a permanently low water content in liquids can be kept can.
  • This is particularly advantageous e.g. in liquid-cellulose insulation systems of liquid-filled transformers.
  • water management be, which means that a targeted and permanent low water content of the entire system can be ensured without the system being inadmissible to put high temperatures or otherwise under stress.
  • this advantage for all systems containing liquids, for water and gases represent a disruptive admixture (e.g. hydraulic systems).
  • the particular advantages of the system are that it is in the usual everyday operation of the system to be treated is used without the Operability or availability.
  • the process used ensures that the physical and chemical properties of the Liquids or liquid-solid systems that pass through it are not negative to be influenced.
  • the active system represents that which has been recorded Pollutants are reliably removed from the system and as far as it is liquids are collected in a container. In this way on the one hand, they are available to monitor the progress of the process on the other hand also for further analyzes to determine the origin e.g. about out leaky water coolers.
  • FIG. 1 An example of the practical application of the device according to the invention is shown as drying of electrical systems in the attached picture 1.
  • the connection is shown as a drying system to a power transformer.
  • Figure 2 shows the internal design of the drying system.
  • the transformer 1 consists of the boiler 10, which contains its active part, consisting of the magnetic circuit 100, and the winding 101, to which the expander 11 is connected from above through connecting pipe 111 and for others from the left, the connection with the left upper connection piece 131 and the left lower connection piece 132 with the left cooler 13 takes place and at the same time the right cooler 12 is also connected to the boiler 10 with the upper right connection piece 121 and the right lower connection piece 122.
  • connection of the transformer 1 to the drying system 2 takes place via the connection 241 and the supply line 242 to the right valve 120 of the right liquid cooler 12, the return line 271 of the drying system 2 with the return connection 272 to the left valve 130 of the left cooler 13 Transformer 1 is connected.
  • a practical implementation of the drying system according to the invention is shown in drawing Figure 2, which consists of the main chamber 20 in which a cellulose filter set 200 is arranged, the lower part of the main chamber 20 being connected to the vertical channel 203 with the left chamber 23 and the upper part the main chamber 20 is connected to the right chamber 21 by means of a central channel 201.
  • the left chamber 23 is connected by means of a transfer tube 204 to the upper region of the condenser 28, which is cooled by the fan 280.
  • the lower area of the condenser 28 is connected via the connection piece 293 to the upper area of the water tank 29, in the lower area of which the drain tap 291 is arranged.
  • the right chamber 21 is fixedly connected to the ejector 210, on the side of which the suction pipe 216 is arranged, which leads via a throttle 292 into the upper region of the water container 29, the upper region of the ejector 210 with the feed pipe 251 being the upper region of the Liquid warmer 25 is connected, in which a radiator 250 is arranged, and from whose lower region the drain pipe 27 leads.
  • the right chamber 21 and left chamber 23 are connected via connector 211, which opens into the left chamber 23 from the lower region of the right chamber 21 via a third check valve 231.
  • nozzle 221 On the right side of the gear pump 22 there is a nozzle 221 from which the suction pipe 24 with built-in suction servo valve 240 branches off immediately after the gear pump 22 and is used as a connection 241 to the system to be treated, for example the transformer.
  • the connector 221 is arranged after the second check valve 222 on the drain pipe 27, the upper area of which opens out on the one hand into the lower area of the liquid heater 25, and on the other hand branches off from the drain pipe 27 of the discharge connector 212 with the built-in first check valve 213, which in the lower area of the right chamber 21 opens, the lower region of the drain pipe 27 with the output servo valve 270 leading to the return connection 271.
  • the vent valve 202 is arranged, which is connected by means of vent pipe 264 to the upper part of the double-acting closure 26, which is equipped in its inner area with a float mechanism 260 and from whose upper right side the air blow-off valve 261 opens, whereby the turning pipe 262 emerges from the lower right side thereof, which opens into the left chamber 23 via the fourth check valve 263.
  • the operating drying according to the invention shown in the example takes advantage of the fact that during normal operation the transformer 1 is heated by the heat loss from the winding 101 and the magnetic circuit 100 and reaches a significantly higher average temperature than the surroundings. According to this temperature, a state of equilibrium is established between water in the insulating liquid and the cellulose.
  • the hot and moist insulating liquid flows into the upper area of the boiler 10 of the transformer 1 and is passed into the right cooler 12 and left cooler 13, where it is cooled and passed again into the lower area of the boiler 10.
  • the moist and cooled insulating liquid then flows out of the lower area of the right cooler 12 of the transformer 1 via the right valve 120 and is introduced into the supply line 242 of the connecting piece 241 of the drying system 2 in the saturation cycle.
  • the moist liquid with the temperature close to the ambient temperature is passed through the cellulose filter insert, where water and substances bound to the water are filtered out of the insulating liquid and stored in the cellulose.
  • the insulating liquid dried in this process is led out of the drying system 2 via the outlet connection 271, return pipe 272 and the left valve 130 into the lower region of the transformer 1.
  • the insulating liquid with a reduced water content flows around the winding 101 and the magnetic circuit 100, gradually heats up and takes the water out of the cellulose.
  • the moist and heated insulating liquid then again passes through the right upper connector 121 into the right cooler 12, where it cools down again and the entire process is repeated. This saturation cycle continues until the preselected saturation of the filter insert with water. Then the inflow of moist insulating liquid from the transformer 1 into the drying system 2 is stopped.
  • the cycles described above run as follows:
  • the saturation cycle of the drying system 2 begins with the opening of the suction servo valve 240 and output servo valve 270 and the switching on of the gear pump 22 in the normal gear.
  • the hot and moist liquid is sucked into the drying system 2 by means of connection piece 241, and is led through the suction pipe 24, the piece 221, the closed check valve 213 and into the gear pump 22.
  • the gear pump 22 pumps the liquid through the connecting piece 220 into the left-hand chamber 23 and through the channel 203 into the lower region of the main chamber 20 through the cellulose filter insert 200.
  • the water and water-like substances are removed from the liquid and the Dried liquid flows from the main chamber 20 through the central channel 201 into the right chamber 21 and via the return line 212, the check valve 213 of which is open. It is led out of the drying system 2 through the open return servo valve 270 and through the return connection 271.
  • the saturation cycle of the drying system 2 lasts up to the preselected one Saturation of the cellulose filter insert 200. It will then turn off the Gear pump 22 and closure of the intake servo valve 240 ends and the The device changes to the regeneration cycle.
  • the direction of rotation of the gear pump 22 is open Counter-current switched the liquid through the connecting piece 220 from the left chamber 23 of the lower portion of the main chamber 20 and through the Overflow nozzle 211 whose first check valve 231 is open, also from the suctioned right chamber 21.
  • the aspirated liquid is by means of Gear pump 22 pressed into the nozzle 221, the check valve 213 in Direction of the drain pipe 27 is open, where the liquid flow so distributed that a smaller amount of liquid runs into the liquid warmer 25 in which the liquid is heated up with the radiator 250 and by means of a feed pipe 251 over the ejector 210 the right chamber 21 and in the upper area of the Main chamber 20 runs over the cellulose filter insert 200, the larger one Amount of liquid is discharged through the drain pipe 27 and opened output servo valve 270 and through the outlet port 271 Drying plant 2 leaves.
  • the left one Chamber 23, the main chamber 20 and the right chamber 23 much more Liquid aspirated as the total amount of liquid in this system the ejector 210 is supplied. Therefore, the rapidly decreases in all these chambers Pressure until the liquid in the dissolved gases is expelled.
  • This process of degassing the liquid takes place within one predetermined time interval under constant monitoring of the vacuum reached. If the required vacuum is reached at the end of the time interval, the changes Drying system 2 automatically for the regeneration of the cellulose filter insert 200. If this vacuum is not reached, the liquid must first be degassed effectively so that the regeneration of the cellulose filter insert 200 is optimal Conditions expires.
  • the gear pump 22 is switched off.
  • the Liquid then flows into the drying installation 2 through the outlet connection 271, the drain pipe 27, in the heater 25 and by means of ejector 210 in the right Chamber 21 simultaneously through the overflow nozzle 211 into the left chamber 23.
  • the vent valve 202 By filling the left chamber 23 and the right chamber 21 are in the separated gases and the mixture of liquid and gases on the one hand into the right chamber 21 through the central channel 201 in the upper area of the main chamber 20 pressed and at the same time the less of this mixture from the left chamber 23 through the vertical channel 203 pressed into the lower area of the main chamber, flows through the Cellulose filter insert 200 and is located in the upper area of the main chamber 20 the vent valve 202 initiated. Compression exceeds separated gases by the inflowing liquid in the main chamber 20 the atmospheric pressure opens the vent valve 202. That in the upper Area of the main chamber 20 separated and accumulated air mixture leaves the system through the open vent valve 202, the vent pipe 264, the double-acting closure 26, the blow-out valve 261 into the surrounding The atmosphere.
  • the system switches to one internal cycle. This causes a steep increase in pressure at the inlet of the Ejector 210, the ejector 210 on the one hand sucks the suction pipe 216 Air mixture from the upper area of the left chamber 23 and promotes on the other hand, the resulting mixture of bubbles and hot liquid into the right chamber 21. Partial separation takes place in right chamber 21 of the air mixture and the liquid in that part of the hot Liquid foam through the channel 201 into the area of the main chamber 20 is guided above the cellulose filter insert 200 and another part of the Foam by means of overflow nozzle 211, the check valve 231 is open in the left chamber 23 is directed.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Drying Of Gases (AREA)
  • Drying Of Solid Materials (AREA)
EP00115734A 1999-09-10 2000-07-21 Konditionierung von Flüssigkeit gefüllten Systemen im laufenden Betrieb und Vorrichtung zur Erreichung dieses Zieles Withdrawn EP1096515A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ19993198A CZ290554B6 (cs) 1999-09-10 1999-09-10 Způsob provozního vysouąení elektrických zařízení a zařízení k provádění tohoto způsobu
CZ319899 1999-09-10

Publications (1)

Publication Number Publication Date
EP1096515A1 true EP1096515A1 (de) 2001-05-02

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EP00115734A Withdrawn EP1096515A1 (de) 1999-09-10 2000-07-21 Konditionierung von Flüssigkeit gefüllten Systemen im laufenden Betrieb und Vorrichtung zur Erreichung dieses Zieles

Country Status (2)

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EP (1) EP1096515A1 (cs)
CZ (1) CZ290554B6 (cs)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008127131A2 (en) 2007-04-17 2008-10-23 Martin Cropp Improved oil drier regenerator
CN107068344A (zh) * 2017-05-25 2017-08-18 王文婧 一种无源自清洗绝缘油在线净化装置
CN118815790A (zh) * 2024-06-21 2024-10-22 国网陕西省电力有限公司榆林供电公司 绝缘油带电真空无气泡补油监护系统及其补油排气方法
CN118899148A (zh) * 2024-10-08 2024-11-05 绿能电力科技有限公司 一种用于可再生能源发电集群的变压器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4437082A (en) * 1982-07-12 1984-03-13 Westinghouse Electric Corp. Apparatus for continually upgrading transformer dielectric liquid
DE19757955A1 (de) * 1997-12-24 1999-07-01 Hossein Prof Dr Ing Borsi Verfahren zur kontinuierlichen Reduzierung der Feuchte von Öl-Papier-isolierten Systemen im Betrieb

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4437082A (en) * 1982-07-12 1984-03-13 Westinghouse Electric Corp. Apparatus for continually upgrading transformer dielectric liquid
DE19757955A1 (de) * 1997-12-24 1999-07-01 Hossein Prof Dr Ing Borsi Verfahren zur kontinuierlichen Reduzierung der Feuchte von Öl-Papier-isolierten Systemen im Betrieb

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008127131A2 (en) 2007-04-17 2008-10-23 Martin Cropp Improved oil drier regenerator
EP2139585A4 (en) * 2007-04-17 2012-02-15 Martin Cropp IMPROVED OIL DRYER GENERATOR
US8282832B2 (en) 2007-04-17 2012-10-09 Martin Cropp Oil drier regenerator
CN107068344A (zh) * 2017-05-25 2017-08-18 王文婧 一种无源自清洗绝缘油在线净化装置
CN118815790A (zh) * 2024-06-21 2024-10-22 国网陕西省电力有限公司榆林供电公司 绝缘油带电真空无气泡补油监护系统及其补油排气方法
CN118899148A (zh) * 2024-10-08 2024-11-05 绿能电力科技有限公司 一种用于可再生能源发电集群的变压器

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Publication number Publication date
CZ9903198A3 (cs) 2002-05-15
CZ290554B6 (cs) 2002-08-14

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