CN105355373A - Amorphous alloy transformer structure capable of effectively reducing temperature rise and improving overload capacity - Google Patents
Amorphous alloy transformer structure capable of effectively reducing temperature rise and improving overload capacity Download PDFInfo
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- CN105355373A CN105355373A CN201510891151.5A CN201510891151A CN105355373A CN 105355373 A CN105355373 A CN 105355373A CN 201510891151 A CN201510891151 A CN 201510891151A CN 105355373 A CN105355373 A CN 105355373A
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Abstract
The invention provides an amorphous alloy transformer structure capable of effectively reducing temperature rise and improving overload capacity. The amorphous alloy transformer structure comprises a transformer body. The transformer body is provided with an oil tank, transformer oil, an oil guiding pipe, an oil circulation power system and a measurement and control system. The oil tank and the oil circulation power system are communicated through the oil guiding pipe. The oil circulation power system is located at the bottom of the transformer body. The measurement and control system is used for monitoring the oil temperature of the transformer oil and the temperature of coils and controlling running and stopping of the oil circulation power system according to the monitored temperature. The oil circulation power system, the measurement and control system and the oil guiding pipe are arranged on the transformer body, the measurement and control system compares the monitored temperature with set values and controls the oil circulation power system to be started and stopped according to the comparison result, the transformer oil pumped by the oil circulation power system flows in the set direction through the oil guiding pipe, the high-voltage coil, the low-voltage coil and the oil tank to take away heat generated by a transformer, and the purposes of effectively reducing temperature rise, improving the overload capacity of the transformer and prolonging the service life of the transformer are achieved.
Description
Technical field
The present invention relates to electrical equipment technical field, particularly relate to a kind of effective reduction temperature rise, improve the amorphous alloy transformer structure of overload capacity.
Background technology
At present, along with increasing of user's household electrical appliances, power load also increases, and make the load factor of the transformer in switchgear house continue to raise, the temperature rise of transformer simultaneously also continues higher, and this brings certain hidden danger with regard to giving the safe and stable operation of electrical network.At present, solution to the problems described above is operator on duty's periodical inspection, and the actual temperature according to the inside of transformer takes cooling measure (such as turning on the aircondition); But, through the site inspection of relevant staff to the switchgear house of partial high pressure client, find the temperature in transformer and the temperature in switchgear house general higher.Can temperature effectively in control transformer by arranging air-conditioning equipment at switchgear house, and then effectively control the temperature in switchgear house, but air-conditioning equipment is with high costs; Meanwhile, if the temperature of switchgear house can not be regulated in time, and then the temperature in transformer can not be regulated in time, be easy to cause Accident of Transformer, then affect power supply.
Summary of the invention
The invention provides a kind of effective reduction temperature rise, improve the amorphous alloy transformer structure of overload capacity, to solve the problems of the technologies described above.
In order to achieve the above object, technical scheme of the present invention is achieved in that a kind of effective reduction temperature rise, improves the amorphous alloy transformer structure of overload capacity, comprise: transformer body, transformer body is provided with fuel tank, iron core, coil, transformer oil, oil guide pipe, oily Circulated power system, TT&C system; Be communicated with by oil guide pipe between fuel tank with oily Circulated power system; Transformer oil is filled in the inside of transformer body; Iron core is positioned at the inside of transformer body; Oil Circulated power system is positioned at the bottom of transformer body; Fuel tank is positioned at the outside of transformer body; Coil is positioned at the inside of transformer body, and coil comprises high-tension coil and low-voltage coil; TT&C system for the temperature of the oil temperature and coil of monitoring transformer oil, and controls operation and the closedown of oily Circulated power system according to monitor temperature.
Further, oily Circulated power system comprises oil pump and unidirectional valve.
Further, TT&C system comprises monitoring means and control unit; Monitoring means comprises oil temperature sensor and coil temperature transducer, for the temperature and coil of monitoring transformer oil temperature and send monitor temperature to control unit; Control unit connects oily Circulated power system, for controlling operation and the closedown of oily Circulated power system according to monitoring means.
Further, control unit comprises single-chip microcomputer.
Further, oil guide pipe comprises internal oil pipe and external oil pipe; External oil pipe is metal material; Internal oil pipe is metal material and insulating material.
Further, fuel tank comprises oil storage portion, fin and lower oil storage portion, and upper oil storage portion is communicated with by fin with lower oil storage portion, and lower oil storage portion is communicated with by oil guide pipe with oily Circulated power system.
Further, lower oil storage portion is provided with communicating valve, and communicating valve is transferred in the sidewall of fuel tank; The sidewall of fuel tank is also provided with the free end of support bar for connected support valve, prevents communicating valve from crossing and turns.
Further, transformer body also comprises oil duct, and oil duct is positioned at the inside of coil or the outside of coil; Oil Circulated power system is communicated with by oil guide pipe with between oil duct.
Further, gap is had between the end of oil guide pipe and the end of oil duct.
Compared with prior art, the invention has the advantages that: the amorphous alloy transformer structure of a kind of effective reduction temperature rise provided by the invention, raising overload capacity; When TT&C system detects the temperature of transformer oil or the temperature of coil reaches set point, start oily Circulated power system, transformer oil carries out forced circulation through oil guide pipe, be with dynamic transformer oil in fuel tank, accelerate flowing, transformer oil is reduced relative to the temperature rise of transformer body surrounding air, and two place's temperature rise decreasing value superpositions, effectively reduce the temperature rise of transformer body, improve the overload capacity of transformer, add the useful life of transformer.This effectively reduces temperature rise, the feature improving the amorphous alloy transformer structure structure of overload capacity is: on transformer body, be provided with oily Circulated power system, TT&C system and oil guide pipe, TT&C system compares monitor temperature and set point and controls startup and the stopping of oily Circulated power system according to comparative result, oil guide pipe, high-tension coil, low-voltage coil and fuel tank etc. form constraint to the flow path of transformer oil, the transformer oil pumped through oily Circulated power system is flowed by the direction of setting, take away the heat that transformer produces, realize effectively reducing temperature rise, improve transformer overload ability, increase the object in transformer useful life.
Accompanying drawing explanation
In order to be illustrated more clearly in the specific embodiment of the invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the embodiment of the present invention.
In figure: 100, transformer body; 1, fuel tank; 11, upper oil storage portion; 12, lower oil storage portion; 13, fin; 14, support bar; 15, communicating valve; 2, iron core; 3, coil; 31, high-tension coil; 32, low-voltage coil; 4, transformer oil; 5, oil guide pipe; 51, internal oil pipe; 52, external oil pipe; 6, oily Circulated power system; 61, oil pump; 62, unidirectional valve; 7, TT&C system; 71, monitoring means; 711, oil temperature sensor; 712, coil temperature transducer; 72, control unit; 8, oil duct.
Embodiment
Carry out clear, complete description below with reference to accompanying drawing to the technical scheme of various embodiments of the present invention, obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belong to the scope that the present invention protects.
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
As shown in Figure 1, the present invention relates to a kind of effective reduction temperature rise, improve the amorphous alloy transformer structure of overload capacity, comprise: transformer body 100, transformer body 100 is provided with fuel tank 1, iron core 2, coil 3, transformer oil 4, oil guide pipe 5, oily Circulated power system 6, TT&C system 7; Be communicated with by oil guide pipe 5 between fuel tank 1 with oily Circulated power system 6; Transformer oil 4 is filled in the inside of transformer body 100; Iron core 2 is positioned at the inside of transformer body 100; Oil Circulated power system 6 is positioned at the bottom of transformer body 100; Fuel tank 1 is positioned at the outside of transformer body 100; Coil 3 is positioned at the inside of transformer body 100, and coil 3 comprises high-tension coil 31 and low-voltage coil 32; TT&C system 7 for the temperature of the oil temperature and coil 3 of monitoring transformer oil 4, and controls operation and the closedown of oily Circulated power system 6 according to monitor temperature.
The amorphous alloy transformer structure of a kind of effective reduction temperature rise provided by the invention, raising overload capacity; When TT&C system 7 detects the temperature of transformer oil 4 or the temperature of coil 3 reaches set point, start oily Circulated power system 6, transformer oil 4 carries out forced circulation through oil guide pipe 5, be with dynamic transformer oil 4 in fuel tank 1, accelerate flowing, transformer oil 4 is reduced relative to the temperature rise of transformer body 100 surrounding air, and two place's temperature rise decreasing value superpositions, effectively reduce the temperature rise of transformer body 100, improve the overload capacity of transformer, add the useful life of transformer.This effectively reduces temperature rise, the feature improving the amorphous alloy transformer structure structure of overload capacity is: on transformer body 100, be provided with oily Circulated power system 6, TT&C system 7 and oil guide pipe 5, TT&C system 7 compares monitor temperature and set point and controls startup and the stopping of oily Circulated power system 6 according to comparative result, oil guide pipe 5, high-tension coil 31, low-voltage coil 32 and fuel tank 1 etc. form constraint to the flow path of transformer oil 4, the transformer oil 4 pumped through oily Circulated power system 6 is flowed by the direction of setting, take away the heat that transformer produces, realize effectively reducing temperature rise, improve transformer overload ability, increase the object in transformer useful life.
Preferably, oily Circulated power system 6 comprises oil pump 61 and unidirectional valve 62.
Unidirectional valve 62, for the flow direction of control transformer oil 4, makes transformer oil 4 can only flow to oily Circulated power system 6 from fuel tank 1, oil, the power that pump 61 flows for providing transformer oil 4; Oil pump 61 can adopt oil-immersed pump.
Preferably, TT&C system 7 comprises monitoring means 71 and control unit 72; Monitoring means 71 comprises oil temperature sensor 711 and coil temperature transducer 712, for the temperature and coil 3 of monitoring transformer oil 4 temperature and send monitor temperature to control unit 72; Control unit 72 connects oily Circulated power system 6, for controlling operation and the closedown of oily Circulated power system 6 according to monitoring means 71.
Control unit 72 compares monitor temperature and set point and controls startup and the stopping of oily Circulated power system 6 according to comparing result, when monitor temperature is higher than set point, control unit 72 controls oily Circulated power system 6 and opens, when monitor temperature is lower than set point, control unit 72 controls oily Circulated power system 6 and closes.
Preferably, control unit 72 comprises single-chip microcomputer.
Preferably, oil guide pipe 5 comprises internal oil pipe 51 and external oil pipe 52; External oil pipe 52 is metal material; Internal oil pipe 51 is metal material and insulating material.
External oil pipe 52 is transformer oil 4 passages when transformer body 100 outer loop, and internal oil pipe 51 is transformer oil 4 passages when transformer body 100 inner loop; External oil pipe 52 generally adopts metal material, and internal oil pipe 51 can adopt isolation material close to the place around coil 3, and other parts both can adopt metal material also can adopt isolation material.
Preferably, fuel tank 1 comprises oil storage portion 11, fin 13 and lower oil storage portion 12, and upper oil storage portion 11 is communicated with by fin 13 with lower oil storage portion 12, and lower oil storage portion 12 is communicated with by oil guide pipe 5 with oily Circulated power system 6.
The transformer oil 4 on transformer body 100 top flows into lower oil storage portion 12 by upper oil storage portion 11 through fin 13, the reduction that fin 13 can make the temperature of transformer oil 4 acquire a certain degree; Then the transformer oil 4 in oil storage portion 12 is descended to enter oily Circulated power system 6 then under the effect of oily Circulated power system 6 through the external oil pipe 52 of oil guide pipe 5, enter the inside of transformer body 100 through the internal oil pipe 51 of oil guide pipe 5, path starts to arrive interior circulation more from inside to outside according to this.
Preferably, lower oil storage portion 12 is provided with communicating valve 15, and communicating valve 15 is transferred in the sidewall of fuel tank 1; The sidewall of fuel tank 1 is also provided with the free end of support bar 14 for connected support valve 15, prevents communicating valve 15 from crossing and turns.
When oil circulating system starts, oil pump starts the transformer oil 4 aspirated inside fuel tank 1, and form negative pressure in lower oil storage portion 12, namely communicating valve 15 closes, stop the oil of transformer body 100 inside to enter lower oil storage portion 12, make transformer oil 4 start to circulate according to the route set.
Preferably, transformer body 100 also comprises oil duct 8, and oil duct 8 is positioned at the inside of coil 3 or the outside of coil 3; Oil Circulated power system 6 is communicated with by oil guide pipe 5 with between oil duct 8.
Be with dynamic transformer oil 4 to accelerate flowing through oil duct 8, take away more heats produced by high-tension coil 31 and low-voltage coil 32, the temperature rise of high-tension coil 31 and low-voltage coil 32 is reduced.
Preferably, gap is had between the end of oil guide pipe 5 and the end of oil duct 8.
Manufacturing process is simple, is convenient to produce.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, the any simple modification done above embodiment according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (9)
1. one kind is effectively reduced the amorphous alloy transformer structure of temperature rise, raising overload capacity, it is characterized in that, comprise: transformer body, described transformer body is provided with fuel tank, iron core, coil, transformer oil, oil guide pipe, oily Circulated power system, TT&C system;
Be communicated with by oil guide pipe between described fuel tank with described oily Circulated power system;
Described transformer oil is filled in the inside of described transformer body;
Described iron core is positioned at the inside of described transformer body;
Described oily Circulated power system is positioned at the bottom of described transformer body;
Described fuel tank is positioned at the outside of described transformer body;
Described coil is positioned at the inside of described transformer body, and described coil comprises high-tension coil and low-voltage coil;
Described TT&C system for the temperature of the oil temperature and described coil of monitoring described transformer oil, and controls operation and the closedown of described oily Circulated power system according to monitor temperature.
2. effectively reduce temperature rise as claimed in claim 1, improve the amorphous alloy transformer structure of overload capacity, it is characterized in that: described oily Circulated power system comprises oil pump and unidirectional valve.
3. effectively reduce temperature rise as claimed in claim 1, improve the amorphous alloy transformer structure of overload capacity, it is characterized in that: described TT&C system comprises monitoring means and control unit; Described monitoring means comprises oil temperature sensor and coil temperature transducer, for the temperature and described coil of monitoring described transformer oil temperature and send monitor temperature to described control unit; Described control unit connects described oily Circulated power system, for controlling operation and the closedown of described oily Circulated power system according to monitoring means.
4. effectively reduce temperature rise as claimed in claim 3, improve the amorphous alloy transformer structure of overload capacity, it is characterized in that: described control unit comprises single-chip microcomputer.
5. effectively reduce temperature rise as claimed in claim 1, improve the amorphous alloy transformer structure of overload capacity, it is characterized in that: described oil guide pipe comprises internal oil pipe and external oil pipe; Described external oil pipe is metal material; Described internal oil pipe is metal material and insulating material.
6. effectively reduce temperature rise as claimed in claim 1, improve the amorphous alloy transformer structure of overload capacity, it is characterized in that: described fuel tank comprises oil storage portion, fin and lower oil storage portion, described upper oil storage portion is communicated with by described fin with described lower oil storage portion, and described lower oil storage portion is communicated with by oil guide pipe with described oily Circulated power system.
7. effectively reduce temperature rise as claimed in claim 6, improve the amorphous alloy transformer structure of overload capacity, it is characterized in that: described lower oil storage portion is provided with communicating valve, and described communicating valve is transferred in the sidewall of described fuel tank; The sidewall of described fuel tank is also provided with support bar for supporting the free end of described communicating valve, prevents described communicating valve from crossing and turns.
8. the effective reduction temperature rise as described in as arbitrary in claim 1-7, improve the amorphous alloy transformer structure of overload capacity, it is characterized in that: described transformer body also comprises oil duct, described oil duct is positioned at the inside of described coil or the outside of described coil; Described oily Circulated power system is communicated with by described oil guide pipe with between described oil duct.
9. the effective reduction temperature rise as described in as arbitrary in claim 8, improve the amorphous alloy transformer structure of overload capacity, it is characterized in that: between the end of described oil guide pipe and the end of described oil duct, have gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510891151.5A CN105355373A (en) | 2015-12-04 | 2015-12-04 | Amorphous alloy transformer structure capable of effectively reducing temperature rise and improving overload capacity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510891151.5A CN105355373A (en) | 2015-12-04 | 2015-12-04 | Amorphous alloy transformer structure capable of effectively reducing temperature rise and improving overload capacity |
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| CN105355373A true CN105355373A (en) | 2016-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510891151.5A Pending CN105355373A (en) | 2015-12-04 | 2015-12-04 | Amorphous alloy transformer structure capable of effectively reducing temperature rise and improving overload capacity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110517849A (en) * | 2019-07-29 | 2019-11-29 | 江苏星驰变压器有限公司 | A kind of oil-immersed type transformer and its detection method for reducing cooling oil convective resistance and work condition state |
| CN110706883A (en) * | 2019-10-23 | 2020-01-17 | 徐州市铜山区百恒电子厂 | A piezoelectric transformer overload circuit cut-off device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160913A (en) * | 1985-01-09 | 1986-07-21 | Tokuden Kk | Insulating oil direct circulating butt iron core type oil-immersed transformer and reactor |
| CN101577173A (en) * | 2008-05-06 | 2009-11-11 | 上海置信电气非晶有限公司 | Oil immersion type distribution transformer with winding temperature measurement function |
| CN203573776U (en) * | 2013-11-20 | 2014-04-30 | 国家电网公司 | 220kV transformer adopting integrated fusion technique of sensors |
| CN203573777U (en) * | 2013-12-06 | 2014-04-30 | 沈阳市敦敏电气有限责任公司 | Forced oil circulation self-cooled transformer |
| CN204464008U (en) * | 2015-04-10 | 2015-07-08 | 江西亚威电气有限公司 | A kind of water cooled transformer |
| CN204792311U (en) * | 2015-07-17 | 2015-11-18 | 扬州华鼎电器有限公司 | Formula distribution transformer is covered with oil to high overload |
| CN205159041U (en) * | 2015-12-04 | 2016-04-13 | 网为电气（邳州）有限公司 | Effectively reduce temperature rise, improvement overload capacity's metallic glass transformer structure |
-
2015
- 2015-12-04 CN CN201510891151.5A patent/CN105355373A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61160913A (en) * | 1985-01-09 | 1986-07-21 | Tokuden Kk | Insulating oil direct circulating butt iron core type oil-immersed transformer and reactor |
| CN101577173A (en) * | 2008-05-06 | 2009-11-11 | 上海置信电气非晶有限公司 | Oil immersion type distribution transformer with winding temperature measurement function |
| CN203573776U (en) * | 2013-11-20 | 2014-04-30 | 国家电网公司 | 220kV transformer adopting integrated fusion technique of sensors |
| CN203573777U (en) * | 2013-12-06 | 2014-04-30 | 沈阳市敦敏电气有限责任公司 | Forced oil circulation self-cooled transformer |
| CN204464008U (en) * | 2015-04-10 | 2015-07-08 | 江西亚威电气有限公司 | A kind of water cooled transformer |
| CN204792311U (en) * | 2015-07-17 | 2015-11-18 | 扬州华鼎电器有限公司 | Formula distribution transformer is covered with oil to high overload |
| CN205159041U (en) * | 2015-12-04 | 2016-04-13 | 网为电气（邳州）有限公司 | Effectively reduce temperature rise, improvement overload capacity's metallic glass transformer structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110517849A (en) * | 2019-07-29 | 2019-11-29 | 江苏星驰变压器有限公司 | A kind of oil-immersed type transformer and its detection method for reducing cooling oil convective resistance and work condition state |
| CN110706883A (en) * | 2019-10-23 | 2020-01-17 | 徐州市铜山区百恒电子厂 | A piezoelectric transformer overload circuit cut-off device |
| CN110706883B (en) * | 2019-10-23 | 2021-07-06 | 徐州市铜山区百恒电子厂 | A piezoelectric transformer overload circuit cut-off device |
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Effective date of registration: 20170111 Address after: 236800 Anhui Province, Bozhou City Qiaocheng District Renyi Street No. 13 Applicant after: Wang Limei Applicant after: Wang Yue Applicant after: Zhu Shengli Applicant after: Liang Chunyong Address before: Ring Road North, Pizhou City, Jiangsu province 221300 Hongqi Road Xuzhou City Economic Development Zone on the west side Applicant before: AMORPHOUS ELECTRIC (PIZHOU) CO.,LTD. Applicant before: Hu Shengtang Applicant before: Dong Wenqing Applicant before: Song Jipu Applicant before: Chang Mingliang Applicant before: Han Likun |
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Application publication date: 20160224 |