CN103559980A - Comprehensive transformer protection device and system - Google Patents
Comprehensive transformer protection device and system Download PDFInfo
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- CN103559980A CN103559980A CN201310575055.0A CN201310575055A CN103559980A CN 103559980 A CN103559980 A CN 103559980A CN 201310575055 A CN201310575055 A CN 201310575055A CN 103559980 A CN103559980 A CN 103559980A
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Abstract
The invention relates to the field of transformers, in particular to a comprehensive transformer protection device and system. The comprehensive transformer protection device comprises a main body, a temperature sensing element, a transparent liquid level communicating pipe, and a pressure element, wherein an upper through hole and a lower through hole are formed in the main body; the protection pipe of the temperature sensing element penetrates the lower through hole and extends out of the main body; the liquid level communicating pipe is arranged in the main body; one end of the liquid level communicating pipe is communicated with the upper through hole, and the other end of the liquid level communicating pipe is communicated with the lower through hole; the pressure element is communicated with the upper through hole. According to the device and the system, the upper through hole is communicated with a first hole through a flange plate, and the lower through hole is communicated with a second hole through another flange plate. According to the device and the system, compared with the situation that the oil leakage probability is high by adopting a plurality of monitors in the prior art, the quantity of holes formed in an oil tank is reduced so as to lower the oil leakage probability.
Description
Technical field
The present invention relates to field transformer, in particular to comprehensive protector of transformer and system thereof.
Background technology
Oil-filled transformer comprises transformer body and fuel tank, and wherein transformer body is immersed in the oil in fuel tank.This oil-filled transformer has good insulating properties and cooling performance.
In using the process of oil-filled transformer, need the pressure in oil temperature, oil level and the fuel tank in Real-Time Monitoring fuel tank.In correlation technique, in order to monitor the pressure in oil temperature, oil level and the fuel tank in fuel tank, on the fuel tank of oil-filled transformer, be respectively arranged with machinery oil bit table, mechanical temperature table sensor, pressure alarm valve and pressure vacuum gauge.When these monitoring devices are installed, need on fuel tank, offer a plurality of through holes, a monitoring device is installed in each through hole, on the fuel tank of current oil-filled transformer, at least offers four through holes even more mainly with these monitoring devices are installed.
Yet, these monitoring devices are arranged on fuel tank by through hole respectively, each through hole all may be because leakage of oil occurs poor sealing, monitor the pressure in oil temperature, oil level and the fuel tank in fuel tank, adopt a fairly large number of these monitoring devices need on fuel tank, offer more multi-through hole, the probability of leakage of oil is large.
Summary of the invention
The object of the present invention is to provide comprehensive protector of transformer and system thereof, to solve the above problems.
A kind of comprehensive protector of transformer is provided in an embodiment of the present invention, has comprised main body, temperature-sensing element, transparent liquid level communicating pipe and load cell; In described main body, be provided with through hole and lower through-hole; The protection tube of described temperature-sensing element reaches outside described main body through described lower through-hole; Be positioned at described main body and one end of described liquid level communicating pipe described liquid level communicating pipe and be communicated with described upper through hole, the other end is communicated with described lower through-hole; Described load cell is communicated with described upper through hole.
A kind of transformer synthesis protection system is also provided in embodiments of the invention, has comprised transformer and above-mentioned comprehensive protector of transformer; On the fuel tank of described transformer, be respectively arranged with the first hole and the second hole; Described the first hole is positioned at the top of the oil level of described fuel tank; Described the second hole is positioned at the below of the oil level of described fuel tank; The upper through hole of described comprehensive protector of transformer is communicated with described the first hole; Described lower through-hole is communicated with described the second hole.
The comprehensive protector of transformer that the embodiment of the present invention provides and system thereof, compare greatly with a plurality of monitoring device of available technology adopting hourglass oil probability, on fuel tank, only need offer two holes, i.e. the first hole and the second hole, the upper through hole of comprehensive protector of transformer is communicated with the first hole, lower through-hole is communicated with the second hole, because the protection tube of the temperature-sensing element in comprehensive protector of transformer extend in fuel tank, temperature-sensing element can be monitored the oil temperature in fuel tank, in addition, be communicated with upper through hole and lower through-hole transparent liquid level communicating pipe, the oil in fuel tank flow into transparent liquid level in communicating pipe, be convenient to monitor oil level, load cell is communicated with upper through hole simultaneously, can monitor oil pressure, this comprehensive protector of transformer is in monitoring oil temperature, in the time of oil level and oil pressure, only need on fuel tank, offer two holes, without offering at least four holes in prior art, reduced the quantity of offering hole on fuel tank, thereby reduced the probability of leakage of oil.
Accompanying drawing explanation
Fig. 1 shows the comprehensive protector of transformer of the embodiment of the present invention and the end view that fuel tank is installed;
Fig. 2 shows the front view of the comprehensive protector of transformer of the embodiment of the present invention.
Embodiment
Below by specific embodiment, also by reference to the accompanying drawings the present invention is described in further detail.
As depicted in figs. 1 and 2, the embodiment of the present invention provides a kind of comprehensive protector of transformer, comprises main body 104, temperature-sensing element 105, transparent liquid level communicating pipe 203 and load cell 106; In main body 104, be provided with through hole and lower through-hole; The protection tube 102 of temperature-sensing element 105 reaches outside main body 104 through lower through-hole; Be positioned at main body 104 and one end of liquid level communicating pipe 203 liquid level communicating pipe 203 and be communicated with upper through hole, the other end is communicated with lower through-hole; Load cell 106 is communicated with upper through hole.Wherein transparent liquid level communicating pipe 203 can be lucite tube.
The comprehensive protector of transformer that the embodiment of the present invention provides, compare greatly with a plurality of monitoring device of available technology adopting hourglass oil probability, on fuel tank 101, only need offer two holes, i.e. the first hole and the second hole, the upper through hole of comprehensive protector of transformer is communicated with the first hole, lower through-hole is communicated with the second hole, because the protection tube 102 of the temperature-sensing element 105 in comprehensive protector of transformer extend in fuel tank 101, temperature-sensing element 105 can be monitored the oil temperature in fuel tank 101, in addition, transparent liquid level communicating pipe 203 is communicated with upper through hole and lower through-hole, the oil in fuel tank 101 flow in transparent liquid level communicating pipe 203, be convenient to monitor oil level, load cell 106 is communicated with upper through hole simultaneously, can monitor oil pressure, this comprehensive protector of transformer is in monitoring oil temperature, in the time of oil level and oil pressure, only need on fuel tank, offer two holes, without offering at least four holes in prior art, reduced the quantity of offering hole on fuel tank, thereby reduced the probability of leakage of oil.
In above-mentioned execution mode, transparent liquid level communicating pipe 203 be just convenient to check oil level, and cannot automatically monitor the variation of oil level, so this comprehensive protector of transformer also comprises and is positioned at the magnet buoy transducer 202 of liquid level communicating pipe 203, upper liquid-level switch contact, lower liquid-level switch contact; Upper liquid-level switch contact is fixed on interior default high liquid level point of liquid level communicating pipe 203; Lower liquid-level switch contact is fixed on interior default low liquid level point of liquid level communicating pipe 203.Be that after being communicated with the second hole transparent liquid level communicating pipe 203, the oil in fuel tank 101 entered in liquid level communicating pipe 203, form linker.Wherein magnet buoy transducer 202 can swim on pasta, along with moving up and down of oil level, moves.On liquid level communicating pipe 203, be fixed with liquid-level switch contact and lower liquid-level switch contact, wherein go up liquid-level switch contact and can be fixed on default high liquid level point, lower liquid-level switch contact is fixed on default low liquid level point simultaneously.When oil level rises to high liquid level point, magnet buoy transducer and the adhesive under the magnetic force attracting each other of upper liquid-level switch contact, thus making the circuit communication of magnet buoy transducer, magnet buoy transducer can send high liquid level warning signal to external control devices.When oil level drops to low liquid level point, magnet buoy transducer and the adhesive under the magnetic force attracting each other of lower liquid-level switch contact, thus making the circuit communication of magnet buoy transducer, magnet buoy transducer can send low liquid level warning signal to external control devices.When wherein oil level is from high liquid level point decline or from low liquid level point rising, the buoyancy of magnet buoy transducer can be greater than the magnetic force of attraction, thus make magnet buoy transducer oil level move up and down Shi Buhui all the time with upper liquid-level switch contact or the contact adhesive of lower liquid-level switch.
In addition, existing float-type oil level indicator needs the liquid level of corresponding temperature conversion transformer oil, error is very large, and the present embodiment is provided with oil level scale in main body, be that magnet buoy transducer is when oil level moves up and down, can by oil level scale, directly read the oil level of magnet buoy transducer place pasta, adopt direct liquid level tube to show, intuitive and convenient.
For the ease of the transmission of liquid level signal between this comprehensive protector of transformer and external control devices, this comprehensive protector of transformer also comprises the liquid level contact plug 205 for being connected with external control devices; Liquid level contact plug 205 is electrically connected to magnet buoy transducer 202.This liquid level contact plug 205 is pegged graft with the contact of external control devices, and the signal of telecommunication that magnet buoy transducer 202 sends sends to external control devices after liquid level contact plug.
For the ease of the transmission of pressure signal between this comprehensive protector of transformer and external control devices, this comprehensive protector of transformer also comprises the press contact plug 204 for being connected with external control devices; Press contact plug 204 is electrically connected to load cell 106.This press contact plug 204 is pegged graft with the contact of external control devices, and the signal of telecommunication that load cell 106 sends sends to external control devices after press contact plug 204.
Further, this comprehensive protector of transformer also comprises the pressure relief valve being electrically connected to load cell; Pressure relief valve is communicated with upper through hole.Be that load cell detects oil pressure when excessive, to pressure relief valve, send release pressure signal, this pressure relief valve is opened after receiving this pressure release signal, thereby reduces the air pressure of pasta top in fuel tank, avoids pressure excessive and make fuel tank distortion.
Except detecting oil pressure by load cell when excessive release pressure, being provided with on this pressure relief valve, force pressure release draw ring 108 and for regulating the adjusting nut 107 of exhaust pressure.Rotate this adjusting nut 107, can regulate the exhaust pressure of pressure relief valve, when the oil pressure in fuel tank is greater than this exhaust pressure, pressure relief valve is opened automatically.Certainly, this pressure relief valve can also be opened as required at any time, pulls and forces pressure release draw ring 108 to get final product opening pressure relief valve.In addition, transformer when doing pressure test, the exhaust pressure of force value overpressure relief valve, make pressure relief valve automatic vent, for fear of the appearance of this situation, on pressure relief valve, be also provided with lockable mechanism, for pressure relief valve when force value surpasses exhaust pressure, do not open.The structure of this lockable mechanism can be similar to the lockable mechanism of fire extinguisher.
For the ease of reading the temperature of monitoring, this comprehensive protector of transformer also comprises electronic temperature control table 201; Electronic temperature control table 201 comprises that temperature element and backstage show control instrument; Oil temperature in temperature element monitoring fuel tank also sends to backstage to show control instrument the oil temperature signal monitoring; Backstage shows that control instrument receives oil temperature signal and shows oil temperature according to oil temperature signal, controls output and reports to the police.Be that temperature element monitors after oil temperature signal, send to backstage to show control instrument this oil temperature signal, backstage shows that control instrument shows oil temperature.In addition, all right preset alarm oil temperature within this backstage shows control instrument, the oil temperature monitoring surpasses after default warning oil temperature, and backstage shows that control instrument can send warning.
Preferably, load cell is the pressure vacuum gauge with oil pressure hi-lo signal alarm electric contact, the resistance value pressure vacuum gauge with remote signal transmission or pressure transmitter, transducer.When use has the pressure vacuum gauge of oil pressure hi-lo signal alarm electric contact, when oil pressure surpasses the default alarm pressure of this pressure vacuum gauge, this pressure vacuum gauge can automatic alarm.When use has the resistance value pressure vacuum gauge, pressure transmitter of remote signal transmission or transducer, the pressure signal that this load cell monitors directly remote transmission to external control devices or PID Background control instrument.
The present embodiment also provides a kind of transformer synthesis protection system, and it comprises transformer and above-mentioned comprehensive protector of transformer; On the fuel tank of transformer, be respectively arranged with the first hole and the second hole; The first hole is positioned at the top of the oil level of fuel tank; The second hole is positioned at the below of the oil level of fuel tank; The upper through hole of comprehensive protector of transformer is communicated with the first hole; Lower through-hole is communicated with the second hole.
Wherein, upper through hole is communicated with by ring flange 103 with the first hole; Lower through-hole is communicated with by ring flange 103 with the second hole.Certainly, can also weld or seal connects.
This comprehensive protector of transformer, except being applied in oil-filled transformer, can also be applied in the relaying protection of full-enclosed distribution transformer.
Existing use machinery oil bit table is to carry out work according to the expansion principle of fluid.Concrete principle is that when oil temperature changes, fluid, because thermal expansion liquid level changes, floats on the ball float change thereupon of liquid level, the different temperature position of pointed of driving mechanical oil level gauge.The objective defect existing is thus, numerical value show and monitoring not directly perceived, the pointed of machinery oil bit table be temperature value, monitor staff need to be according to the temperature value of pointed, the situation of change that indirectly judges liquid level according to thermal expansion operation principle, error in judgement is very big, and monitoring reliability is low.
Existing use mechanical temperature table sensor, cannot the sub-zero temperature of measurement and monitoring, and monitoring temperature if realize remote intelligent, will configure special temperature transmitter again, realizes telecommunication, and cost is high.In addition, not convenient aspect installing and using yet, and it is lower to measure monitoring precision, and functional reliability is poor.
The pressure alarm valve of existing use, pressure relief valve and mechanical vacuum Pressure gauge; safeguard measure after reporting to the police about pressure generation high-low position; be that earth pressure release is with supplementary; cannot carry out by mechanical device the automatic adjusting of pressure; can only be by manually carrying out manual adjustments, work loaded down with trivial details and error risk is larger.
Pressure in oil temperature, oil level and the fuel tank comparing in existing use machinery oil bit table, mechanical temperature table sensor, pressure alarm valve, pressure relief valve and mechanical vacuum Pressure gauge monitoring fuel tank, the comprehensive protector of transformer of the present embodiment, the perforate workload of installing reduces greatly, saves man-hour and cost; The minimizing of the number of openings also greatly reduces the seepage of oily medium, has solved puzzlement user oily medium seepage for a long time worried; The minimizing of the number of openings, also prevents from the seepage of air from preventing from causing reducing the useful life of oily medium because air leaks causes the intensification of oil-insulation hydraulic performance decline and degree of oxidation better; With regard to use, install and use more convenient, quick; Transformer outward appearance is more attractive in appearance.In addition, this comprehensive protector of transformer accuracy of detection is high, and functional reliability is good.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (9)
1. a comprehensive protector of transformer, is characterized in that, comprises main body, temperature-sensing element, transparent liquid level communicating pipe and load cell;
In described main body, be provided with through hole and lower through-hole; The protection tube of described temperature-sensing element reaches outside described main body through described lower through-hole;
Be positioned at described main body and one end of described liquid level communicating pipe described liquid level communicating pipe and be communicated with described upper through hole, the other end is communicated with described lower through-hole;
Described load cell is communicated with described upper through hole.
2. comprehensive protector of transformer according to claim 1, is characterized in that, also comprises and is positioned at the magnet buoy transducer of described liquid level communicating pipe, upper liquid-level switch contact, lower liquid-level switch contact;
Described upper liquid-level switch contact is fixed on high liquid level point default in described liquid level communicating pipe; Described lower liquid-level switch contact is fixed on low liquid level point default in described liquid level communicating pipe.
3. comprehensive protector of transformer according to claim 2, is characterized in that, also comprises the liquid level contact plug for being connected with external control devices;
Described liquid level contact plug is connected with described magnet buoy sensor electrical.
4. comprehensive protector of transformer according to claim 3, is characterized in that, also comprises the press contact plug for being connected with external control devices;
Described press contact plug is electrically connected to described load cell.
5. comprehensive protector of transformer according to claim 4, is characterized in that, also comprises the pressure relief valve being electrically connected to described load cell;
Described pressure relief valve is communicated with described upper through hole.
6. comprehensive protector of transformer according to claim 5, is characterized in that, is provided with to force pressure release draw ring and for regulating the adjusting nut of exhaust pressure on described pressure relief valve.
7. comprehensive protector of transformer according to claim 6, is characterized in that, also comprises electronic temperature control table;
Described electronic temperature control table comprises that temperature element and backstage show control instrument; Described temperature element is for monitoring the oil temperature in fuel tank and sending to described backstage to show control instrument the oil temperature signal monitoring; Described backstage shows that control instrument receives described oil temperature signal and shows oil temperature according to described oil temperature signal, controls output and reports to the police.
8. a transformer synthesis protection system, is characterized in that, comprises transformer and the comprehensive protector of transformer as described in any one in claim 1-7;
On the fuel tank of described transformer, be respectively arranged with the first hole and the second hole; Described the first hole is positioned at the top of the oil level of described fuel tank; Described the second hole is positioned at the below of the oil level of described fuel tank;
The upper through hole of described comprehensive protector of transformer is communicated with described the first hole; Described lower through-hole is communicated with described the second hole.
9. transformer synthesis protection system according to claim 8, is characterized in that, described upper through hole is communicated with by ring flange with described the first hole; Described lower through-hole is communicated with by ring flange with described the second hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310575055.0A CN103559980B (en) | 2013-11-15 | 2013-11-15 | Comprehensive protector of transformer and system thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310575055.0A CN103559980B (en) | 2013-11-15 | 2013-11-15 | Comprehensive protector of transformer and system thereof |
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| Publication Number | Publication Date |
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| CN103559980A true CN103559980A (en) | 2014-02-05 |
| CN103559980B CN103559980B (en) | 2015-12-16 |
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| CN201310575055.0A Expired - Fee Related CN103559980B (en) | 2013-11-15 | 2013-11-15 | Comprehensive protector of transformer and system thereof |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134520A (en) * | 2014-07-25 | 2014-11-05 | 广州供电局有限公司 | Refueling unit and refueling method for distribution transformer |
| CN106052732A (en) * | 2016-07-13 | 2016-10-26 | 安徽皖宏电气设备有限公司 | Integrated oil-immersed transformer oil level temperature pressure sensor |
| CN106289635A (en) * | 2016-07-28 | 2017-01-04 | 山西太钢不锈钢股份有限公司 | A kind of steam turbine vacuum measurement apparatus |
| CN107860487A (en) * | 2017-11-23 | 2018-03-30 | 上海置信电气股份有限公司 | The oil level and oil temperature integration monitoring method and device of distribution transformer |
| WO2018126273A1 (en) | 2016-12-31 | 2018-07-05 | Abb Schweiz Ag | Systems and methods for monitoring components in a power transformer or the like |
| CN108461263A (en) * | 2017-02-20 | 2018-08-28 | 武汉市欧睿科技有限公司 | Light-duty inflatable power frequency testing transformer |
| CN108899180A (en) * | 2018-06-25 | 2018-11-27 | 广东瑞智电力科技有限公司 | A kind of transformer digital monitoring protective device |
| CN109459110A (en) * | 2018-12-26 | 2019-03-12 | 大连普阳铁路车辆配件有限公司 | Diesel engine cooling water tank low liquid level warning arresting gear |
| CN109494055A (en) * | 2018-12-18 | 2019-03-19 | 辽宁易德实业集团有限公司 | Intelligent vacuum arc extinguishing three-dimensional winding iron core capacity and pressure regulating transformer |
| CN110061473A (en) * | 2019-05-07 | 2019-07-26 | 北京中瑞和电气有限公司 | A kind of transformer digital protection equipment and method based on pressure list amount information |
| CN110672156A (en) * | 2019-10-18 | 2020-01-10 | 哈尔滨朗昇电气股份有限公司 | Transformer state monitoring device with data acquisition and communication alarm functions |
| CN110887548A (en) * | 2019-11-28 | 2020-03-17 | 四川泛华航空仪表电器有限公司 | Oil level annunciator with overload resistance |
| CN111828330A (en) * | 2020-07-22 | 2020-10-27 | 江苏省相城中等专业学校 | Integrated ship fluid pollutant collecting bin |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131911A (en) * | 1980-03-19 | 1981-10-15 | Fuji Electric Co Ltd | Oil-insulated induction electric equipment |
| CN2465288Y (en) * | 2001-03-15 | 2001-12-12 | 开平市海鸿变压器有限公司 | Transformer with pressure releasing valve |
| CN2570936Y (en) * | 2002-09-16 | 2003-09-03 | 邵长青 | Transformer protector |
| CN2582126Y (en) * | 2002-12-10 | 2003-10-22 | 周文举 | Transformer protector |
| CN2742554Y (en) * | 2004-11-04 | 2005-11-23 | 姚洪林 | Multifunction transformer protector |
| CN2847482Y (en) * | 2005-12-09 | 2006-12-13 | 朱政权 | Multifunction protector for transformer |
| CN101009172A (en) * | 2006-12-12 | 2007-08-01 | 刘书敏 | Multifunctional protection device of the transformer |
| CN101183598A (en) * | 2007-10-22 | 2008-05-21 | 南车株洲电力机车有限公司 | Traction transformer fuel level alarm system and control method |
| CN203659571U (en) * | 2013-11-15 | 2014-06-18 | 宋红庆 | Comprehensive protection device and system of transformer |
-
2013
- 2013-11-15 CN CN201310575055.0A patent/CN103559980B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56131911A (en) * | 1980-03-19 | 1981-10-15 | Fuji Electric Co Ltd | Oil-insulated induction electric equipment |
| CN2465288Y (en) * | 2001-03-15 | 2001-12-12 | 开平市海鸿变压器有限公司 | Transformer with pressure releasing valve |
| CN2570936Y (en) * | 2002-09-16 | 2003-09-03 | 邵长青 | Transformer protector |
| CN2582126Y (en) * | 2002-12-10 | 2003-10-22 | 周文举 | Transformer protector |
| CN2742554Y (en) * | 2004-11-04 | 2005-11-23 | 姚洪林 | Multifunction transformer protector |
| CN2847482Y (en) * | 2005-12-09 | 2006-12-13 | 朱政权 | Multifunction protector for transformer |
| CN101009172A (en) * | 2006-12-12 | 2007-08-01 | 刘书敏 | Multifunctional protection device of the transformer |
| CN101183598A (en) * | 2007-10-22 | 2008-05-21 | 南车株洲电力机车有限公司 | Traction transformer fuel level alarm system and control method |
| CN203659571U (en) * | 2013-11-15 | 2014-06-18 | 宋红庆 | Comprehensive protection device and system of transformer |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134520A (en) * | 2014-07-25 | 2014-11-05 | 广州供电局有限公司 | Refueling unit and refueling method for distribution transformer |
| CN106052732A (en) * | 2016-07-13 | 2016-10-26 | 安徽皖宏电气设备有限公司 | Integrated oil-immersed transformer oil level temperature pressure sensor |
| CN106289635A (en) * | 2016-07-28 | 2017-01-04 | 山西太钢不锈钢股份有限公司 | A kind of steam turbine vacuum measurement apparatus |
| EP3563134A1 (en) * | 2016-12-31 | 2019-11-06 | ABB Schweiz AG | Systems and methods for monitoring components in a power transformer or the like |
| WO2018126273A1 (en) | 2016-12-31 | 2018-07-05 | Abb Schweiz Ag | Systems and methods for monitoring components in a power transformer or the like |
| US11587727B2 (en) | 2016-12-31 | 2023-02-21 | Hitachi Energy Switzerland Ag | Systems and methods for monitoring components in a power transformer or the like |
| EP3563134A4 (en) * | 2016-12-31 | 2020-07-15 | ABB Schweiz AG | Systems and methods for monitoring components in a power transformer or the like |
| CN108461263A (en) * | 2017-02-20 | 2018-08-28 | 武汉市欧睿科技有限公司 | Light-duty inflatable power frequency testing transformer |
| CN107860487A (en) * | 2017-11-23 | 2018-03-30 | 上海置信电气股份有限公司 | The oil level and oil temperature integration monitoring method and device of distribution transformer |
| CN108899180A (en) * | 2018-06-25 | 2018-11-27 | 广东瑞智电力科技有限公司 | A kind of transformer digital monitoring protective device |
| CN109494055A (en) * | 2018-12-18 | 2019-03-19 | 辽宁易德实业集团有限公司 | Intelligent vacuum arc extinguishing three-dimensional winding iron core capacity and pressure regulating transformer |
| CN109459110A (en) * | 2018-12-26 | 2019-03-12 | 大连普阳铁路车辆配件有限公司 | Diesel engine cooling water tank low liquid level warning arresting gear |
| CN110061473A (en) * | 2019-05-07 | 2019-07-26 | 北京中瑞和电气有限公司 | A kind of transformer digital protection equipment and method based on pressure list amount information |
| CN110672156A (en) * | 2019-10-18 | 2020-01-10 | 哈尔滨朗昇电气股份有限公司 | Transformer state monitoring device with data acquisition and communication alarm functions |
| CN110887548A (en) * | 2019-11-28 | 2020-03-17 | 四川泛华航空仪表电器有限公司 | Oil level annunciator with overload resistance |
| CN111828330A (en) * | 2020-07-22 | 2020-10-27 | 江苏省相城中等专业学校 | Integrated ship fluid pollutant collecting bin |
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