WO2005059483A1 - Vorrichtung und verfahren zur überwachung eines gasvolumens in einer mit flüssigkeit befüllten anlage - Google Patents
Vorrichtung und verfahren zur überwachung eines gasvolumens in einer mit flüssigkeit befüllten anlage Download PDFInfo
- Publication number
- WO2005059483A1 WO2005059483A1 PCT/DE2004/002656 DE2004002656W WO2005059483A1 WO 2005059483 A1 WO2005059483 A1 WO 2005059483A1 DE 2004002656 W DE2004002656 W DE 2004002656W WO 2005059483 A1 WO2005059483 A1 WO 2005059483A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- shaft
- liquid
- expansion vessel
- gas volume
- buoyancy body
- Prior art date
Links
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/76—Devices for measuring mass flow of a fluid or a fluent solid material
- G01F1/86—Indirect mass flowmeters, e.g. measuring volume flow and density, temperature or pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
- G01F23/32—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using rotatable arms or other pivotable transmission elements
-
- 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
- H01F27/40—Structural association with built-in electric component, e.g. fuse
- H01F27/402—Association of measuring or protective means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H33/53—Cases; Reservoirs, tanks, piping or valves, for arc-extinguishing fluid; Accessories therefor, e.g. safety arrangements, pressure relief devices
- H01H33/55—Oil reservoirs or tanks; Lowering means therefor
- H01H33/555—Protective arrangements responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/18—Switches operated by change of liquid level or of liquid density, e.g. float switch
Definitions
- the invention relates to a device for monitoring a gas volume in a system filled with a liquid, the system being connected to at least one expansion vessel via an inflow line, and the device containing a buoyancy body floating in the liquid.
- Expansion vessel in the sense of the invention stands for a vessel that can hold the liquid that expands via the inflow line of the system, and for a gas collection container, such as e.g. a Buchholz relay that is connected upstream of a liquid expansion tank.
- the invention relates to a method for monitoring a gas volume in a system filled with liquid by means of a floating buoyancy body in an expansion vessel of the system.
- the cores and the windings of these transformers are stored in a liquid container, in particular an oil boiler.
- the coolant in the boiler mostly a transformer oil - expands during operation due to the heating of the transformer, with the excess coolant being collected in an expansion tank located above the transformer.
- gases are also extracted from the coolant or are generated within the system or the connecting lines.
- the ambient air can enter this gas-tight circuit via a leak within the system or the connecting lines and accumulate within the system or in the expansion vessels. Due to their density, these gases collect in the expansion vessels located above the transformer.
- DE 101 33 615 Cl describes a device for detecting undissolved gases in liquids Plants, in particular high-voltage plants, are disclosed, with the device being used to determine the evolution of gas over time in a Buchholz relay.
- the measuring device proposed in DE 101 33 615 C1 consists of a differential pressure measuring device which is connected to at least two pressure measuring connections via two liquid-filled lines. The liquid-filled lines are connected on the one hand to the interior of the Buchholz relay and on the other hand to a reference liquid column that is open at the top.
- the object of the present invention is to quickly and reliably detect the gas volume present in a system filled with liquid.
- the object is achieved by the device according to claim 1 and the method according to claim 9.
- a floating buoyancy body is connected to a shaft fixed in the expansion vessel and is rotatably mounted with respect to the shaft.
- the rotatable mounting of the shaft comprises the articulation of the buoyancy body with respect to a rigid shaft, and the rotation of the shaft about the axis of rotation of the shaft with a buoyancy body firmly connected to the shaft.
- the floating buoyancy body depicts the height level of the liquid surface within the expansion vessel, so that the additional knowledge of the shape and size of the expansion vessel allows conclusions to be drawn about the gas volume located above the liquid.
- a connecting element in particular a rod with a small diameter and a small intrinsic important, the shaft with the buoyancy body spaced from it.
- the relative height of the wave with respect to the liquid surface and the length of the connection determine the measuring width of the gas volume to be detected and the accuracy of the gas detection.
- a stationary force transducer advantageously detects the torque at the connection at a predetermined length (a).
- a processing device generates a warning message when a predetermined torque is exceeded by a torque measured in the force transducer.
- the specified torque is a measure of the maximum gas volume to be detected within an expansion vessel used as a Buchholz relay to trigger a warning message and thus fulfills the industry standard DIN 42566.
- a plurality of buoyancy bodies are arranged offset from one another at fixed height levels, in each case with respect to the shafts arranged parallel to one another, the respective buoyancy bodies having different sizes and / or densities.
- Different gases can be detected and / or the accuracies of the gas volume measurement can be compared with one another by means of the determined gas volumes of the different gas volume measurements by the attachment of different density buoyancy bodies in different height levels of the individual shafts.
- the expansion vessel it is necessary for the expansion vessel to be divided into separate chambers and for only one gas in each chamber to be determined by a buoyancy body located in the chamber.
- a fixed protractor measures the angle between the connection of the buoyancy body and a transverse axis of the shaft. By determining an angle, the knowledge of the size and shape of the expansion vessel can also be used to determine a gas volume above the liquid.
- a processing device in the expansion tank used as a Buchholz relay generates a warning message when a predetermined angle between the connection of the float and the horizontal is exceeded and thus also meets the industrial standard DIN 42566.
- the buoyancy body advantageously contains additional capacitive and / or inductive and / or optical elements, with a processing device detecting the electromagnetic and / or electrical and / or optical signals generated by them.
- additional, alternative volume determination methods makes it possible to compare the gas volumes determined in each case.
- a method for monitoring a gas volume in a system filled with a liquid having an inflow line with at least one expansion vessel and a buoyancy body floating in the liquid being located in the expansion vessel and the buoyancy body connected in the expansion vessel to a fixed shaft and is rotatably mounted with respect to the shaft, the rotational movement of the floating body with respect to the shaft being determined.
- the shaft is advantageously fixed at a fixed height level within the expansion vessel based on a maximum gas volume to be detected relative to the inside of the upper cover of the expansion vessel and by means of a fixing device, in particular in the form of predetermined recesses. along a bracket, the shaft is fixed at fixed height levels. Since the gas volume to be detected always accumulates above the liquid in the expansion vessel used as a Buchholz relay, the gas volume to be detected is expediently to be determined in relation to the inside of the upper cover and the height level of the shaft to be determined can thus be determined.
- Fig. 1 is a schematic representation of the device according to the invention.
- FIG. 2 shows a schematic representation of a gas detection system with two devices according to the invention.
- Fig. 1 shows a schematic representation of the device according to the invention as an expansion vessel la.
- the expansion vessel la arranged above a transformer (not shown) is connected to an access opening 2 via a connecting line (not shown).
- the expansion vessel la is further connected via an outlet opening 3 to a downstream expansion tank 1b (not shown), the downstream liquid expansion tank also being able to be designed as an expansion tank la with an outlet opening provided in the upper cover (10a).
- the downstream expansion tank lb (not shown) prevents excessive pressure rise within the expansion vessel la when completely filled with a liquid.
- Two buoyancy bodies 5, 6 are arranged within the expansion vessel la, the buoyancy bodies 5, 6 being rotatably mounted relative to the liquid surface of the liquid located in the expansion vessel la via spaced connecting elements 4a, 4b.
- the upper buoyancy body 5 is connected to a shaft 11 at a fixed height 9 and is rotatably supported.
- the lower buoyancy body 6 is used to switch off the entire transformer system if the liquid level drops below a certain level and thus threatens to overheat the transformer.
- the upper buoyancy body 5 is arranged within the expansion vessel la in such a way that it permits permanent detection of the gas volume in the event of gas formation in the expansion vessel la.
- the upper buoyancy body 5 is arranged at a predefined distance from the inside of the upper cover 10a of the expansion vessel 1 a and is rotatably mounted with respect to the relative level 9 thus defined. In this way, the formation of a gas volume within the expansion vessel la can be monitored continuously and without gaps until a maximum predetermined gas volume is reached, and a warning message is issued by the system when the maximum predetermined gas volume is exceeded.
- the density and size of the buoyancy bodies 5, 6 and the length of the connecting elements 4a, 4b are determined as a function of the liquid used and thus on the basis of the maximum possible torque relative to the shaft 11 due to the buoyancy of the floating body 5.
- the one connected to the upper buoyancy body 5 or the upper connecting element 4a Force transducer 7 permanently represents the force or torque generated by the buoyancy body 5 and is thus a measure of the gas volume located in the expansion vessel 1 a, which can thereby be detected quickly and reliably.
- FIG. 2 shows a schematic representation of a system 12 with two expansion vessels la, lb.
- An inflow line 13 is arranged on a liquid container 14, in particular a high-voltage transformer system, in the lid region of that of the liquid container 14.
- the inflow line is connected via the access opening 2 to a first expansion vessel 1 a.
- the first expansion vessel la serves to record the gas volume of the system 12 collecting in the expansion vessel la.
- the first expansion vessel la is connected via an outlet opening 3 via a further inflow line 13 to a second, higher-level expansion vessel lb via the access opening 2.
- the outlet opening 3 is located in the upper cover 10a (not shown) and serves to compensate for the ambient air.
- the gas volume measured in the second expansion vessel 1b is then measured at ambient pressure.
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Level Indicators Using A Float (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006544205A JP2007514940A (ja) | 2003-12-19 | 2004-11-30 | 液体を満たしたユニット内のガス量監視装置及び方法 |
EP04802864A EP1714115A1 (de) | 2003-12-19 | 2004-11-30 | Vorrichtung und verfahren zur überwachung eines gasvolumens in einer mit flüssigkeit befüllten anlage |
BRPI0417678-2A BRPI0417678A (pt) | 2003-12-19 | 2004-11-30 | dispositivo e método para monitorar um volume de gás em uma instalação cheia de lìquido |
US10/583,337 US7614299B2 (en) | 2003-12-19 | 2004-11-30 | Device and method for monitoring a gas volume in a unit filled with liquid |
CA002550031A CA2550031A1 (en) | 2003-12-19 | 2004-11-30 | Device and method for monitoring a gas volume in a unit filled with liquid |
US12/547,128 US20100043544A1 (en) | 2003-12-19 | 2009-08-25 | Device and method for monitoring a gas volume in a unit filled with liquid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10361884.8 | 2003-12-19 | ||
DE10361884A DE10361884B3 (de) | 2003-12-19 | 2003-12-19 | Vorrichtung und Verfahren zur Überwachung eines Gasvolumens in einer mit Flüssigkeit befüllten Anlage |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/583,337 Continuation US20080093901A1 (en) | 2006-10-19 | 2006-10-19 | Headrest cover |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005059483A1 true WO2005059483A1 (de) | 2005-06-30 |
Family
ID=34683934
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2004/002656 WO2005059483A1 (de) | 2003-12-19 | 2004-11-30 | Vorrichtung und verfahren zur überwachung eines gasvolumens in einer mit flüssigkeit befüllten anlage |
Country Status (8)
Country | Link |
---|---|
US (2) | US7614299B2 (de) |
EP (1) | EP1714115A1 (de) |
JP (1) | JP2007514940A (de) |
CN (1) | CN100592041C (de) |
BR (1) | BRPI0417678A (de) |
CA (1) | CA2550031A1 (de) |
DE (1) | DE10361884B3 (de) |
WO (1) | WO2005059483A1 (de) |
Cited By (1)
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CN105700452A (zh) * | 2015-11-13 | 2016-06-22 | 沈阳海为电力装备股份有限公司 | 一种基于互联网+智能型储油柜的远程监控系统 |
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DE102004016583B3 (de) * | 2004-03-31 | 2006-03-09 | Siemens Ag | Mehrkammersystem als Flüssigkeitsausgleichsgefäß und deren Verwendung |
US20110277546A1 (en) * | 2010-05-11 | 2011-11-17 | Armitage David L | Tank fullness monitoring system |
DE102010064394A1 (de) * | 2010-12-30 | 2012-07-05 | Endress + Hauser Gmbh + Co. Kg | Verfahren und Vorrichtung zum Ausrichten eines Messgerätes |
CN102157299B (zh) * | 2011-03-23 | 2013-02-27 | 刘畅 | 在线监测瓦斯继电器 |
CN103718258A (zh) * | 2011-07-25 | 2014-04-09 | Abb技术有限公司 | 用于电力变压器的安全设备和监测方法以及相关的电力变压器 |
CN103376147A (zh) * | 2012-04-13 | 2013-10-30 | 沈阳海为电力设备有限公司 | 智能内油式金属波纹膨胀储油柜 |
CN108716938B (zh) * | 2018-04-27 | 2024-06-07 | 广州万孚生物技术股份有限公司 | 一种液体定量装置及其应用 |
CN109932016B (zh) * | 2019-01-29 | 2020-07-03 | 南开大学 | 一种充气柔性电容式体积传感器及其制备方法 |
CN111256782B (zh) * | 2020-02-14 | 2020-12-22 | 孙淑芳 | 一种用于油罐的测量伺服液位计 |
CN113834755B (zh) * | 2021-06-30 | 2023-06-06 | 北京航天控制仪器研究所 | 一种氟油气体容积检测装置和方法 |
CN114005661B (zh) * | 2021-12-29 | 2022-03-22 | 深圳灏鹏科技有限公司 | 一种基于光学辐射的自维护电力变压器及其使用方法 |
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DE1400448U (de) * | 1935-12-21 | 1937-02-19 | ||
GB482634A (en) * | 1937-02-27 | 1938-04-01 | Max Buchholz | A system of protection for liquid-insulated electrical apparatus |
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DE847934C (de) * | 1949-09-07 | 1952-08-28 | Micafil Ag | Schutzeinrichtung fuer mit einer Isolierfluessigkeit arbeitende elektrische Apparate |
DE1204323B (de) * | 1964-05-20 | 1965-11-04 | Licentia Gmbh | Einrichtung zur Gasmeldung in Durchfuehrungen |
DE1270169B (de) * | 1964-11-26 | 1968-06-12 | Rayonnoe Energetitscheskoje Up | Gasschutzrelais fuer OEltransformatoren |
EP0883222A1 (de) * | 1997-06-03 | 1998-12-09 | France Transfo (S.A.) | Selbstschutz-Auslöseeinrichtung für eingetauchten elektrischen Transformator |
US20030094044A1 (en) * | 2001-11-22 | 2003-05-22 | Messko Albert Hauser Gmbh & Co. Kg | level gauge for oil-filled transformers, chokes and tap changers |
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-
2003
- 2003-12-19 DE DE10361884A patent/DE10361884B3/de not_active Expired - Fee Related
-
2004
- 2004-11-30 US US10/583,337 patent/US7614299B2/en not_active Expired - Fee Related
- 2004-11-30 BR BRPI0417678-2A patent/BRPI0417678A/pt not_active IP Right Cessation
- 2004-11-30 EP EP04802864A patent/EP1714115A1/de not_active Withdrawn
- 2004-11-30 WO PCT/DE2004/002656 patent/WO2005059483A1/de active Application Filing
- 2004-11-30 CN CN200480037143A patent/CN100592041C/zh active Active
- 2004-11-30 JP JP2006544205A patent/JP2007514940A/ja active Pending
- 2004-11-30 CA CA002550031A patent/CA2550031A1/en not_active Abandoned
-
2009
- 2009-08-25 US US12/547,128 patent/US20100043544A1/en not_active Abandoned
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1400448U (de) * | 1935-12-21 | 1937-02-19 | ||
DE664701C (de) * | 1936-11-19 | 1938-09-05 | Siemens Schuckertwerke Akt Ges | Schutzvorrichtung fuer oelgefuellte elektrische Apparate |
GB482634A (en) * | 1937-02-27 | 1938-04-01 | Max Buchholz | A system of protection for liquid-insulated electrical apparatus |
DE847934C (de) * | 1949-09-07 | 1952-08-28 | Micafil Ag | Schutzeinrichtung fuer mit einer Isolierfluessigkeit arbeitende elektrische Apparate |
DE1204323B (de) * | 1964-05-20 | 1965-11-04 | Licentia Gmbh | Einrichtung zur Gasmeldung in Durchfuehrungen |
DE1270169B (de) * | 1964-11-26 | 1968-06-12 | Rayonnoe Energetitscheskoje Up | Gasschutzrelais fuer OEltransformatoren |
EP0883222A1 (de) * | 1997-06-03 | 1998-12-09 | France Transfo (S.A.) | Selbstschutz-Auslöseeinrichtung für eingetauchten elektrischen Transformator |
US20030094044A1 (en) * | 2001-11-22 | 2003-05-22 | Messko Albert Hauser Gmbh & Co. Kg | level gauge for oil-filled transformers, chokes and tap changers |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105700452A (zh) * | 2015-11-13 | 2016-06-22 | 沈阳海为电力装备股份有限公司 | 一种基于互联网+智能型储油柜的远程监控系统 |
Also Published As
Publication number | Publication date |
---|---|
CN100592041C (zh) | 2010-02-24 |
DE10361884B3 (de) | 2005-08-11 |
CA2550031A1 (en) | 2005-06-30 |
BRPI0417678A (pt) | 2007-03-20 |
US20070119230A1 (en) | 2007-05-31 |
EP1714115A1 (de) | 2006-10-25 |
JP2007514940A (ja) | 2007-06-07 |
US20100043544A1 (en) | 2010-02-25 |
CN1894565A (zh) | 2007-01-10 |
US7614299B2 (en) | 2009-11-10 |
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