CN116130211B - Energy-saving oil immersed transformer - Google Patents
Energy-saving oil immersed transformer Download PDFInfo
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- CN116130211B CN116130211B CN202310338685.XA CN202310338685A CN116130211B CN 116130211 B CN116130211 B CN 116130211B CN 202310338685 A CN202310338685 A CN 202310338685A CN 116130211 B CN116130211 B CN 116130211B
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- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 238000001816 cooling Methods 0.000 claims abstract description 59
- 238000005192 partition Methods 0.000 claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 24
- 230000005611 electricity Effects 0.000 claims abstract description 10
- 238000010521 absorption reaction Methods 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims description 74
- 239000007788 liquid Substances 0.000 claims description 46
- 238000005086 pumping Methods 0.000 claims description 34
- 238000010438 heat treatment Methods 0.000 claims description 30
- 239000000463 material Substances 0.000 claims description 21
- 238000009434 installation Methods 0.000 claims description 20
- 238000007599 discharging Methods 0.000 claims description 16
- 238000004146 energy storage Methods 0.000 claims description 10
- 238000001035 drying Methods 0.000 claims description 8
- 230000001681 protective effect Effects 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 2
- 239000002699 waste material Substances 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 55
- 238000009413 insulation Methods 0.000 description 20
- 239000007921 spray Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 15
- 239000002918 waste heat Substances 0.000 description 7
- 238000004804 winding Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- 239000000969 carrier Substances 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- 239000000284 extract Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000000740 bleeding effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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
- H01F27/22—Cooling by heat conduction through solid or powdered fillings
-
- 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
-
- 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
- H01F2027/406—Temperature sensor or protection
Abstract
The invention belongs to the technical field of transformers, and particularly relates to an energy-saving oil immersed transformer which comprises a transformer main body, a circulating mechanism, a temperature difference electricity exchanging mechanism and a heat application mechanism; the transformer main body is connected with a plurality of corrugated cooling fins, and a plurality of temperature sensors are arranged on the transformer main body; the circulating mechanism is connected to one side wall of the transformer main body and comprises a mounting box, a vertical partition plate is arranged in the mounting box, and a heat conversion cavity and a heat application cavity are formed between the vertical partition plate and the inner wall of the mounting box; the temperature difference heat exchange mechanism is used for converting heat energy in the transformer oil absorbed by the oil absorption mechanism into electric energy for storage; the heat application mechanism uses the electric energy stored by the temperature difference electricity conversion mechanism to cool and dry the transformer main body. According to the invention, through the arrangement of the corresponding mechanism, the heat energy carried by the transformer oil in the oil-immersed transformer can be recycled, so that the waste of the heat energy in the transformer oil can be effectively avoided, and the oil-immersed transformer is convenient to use in an energy-saving and environment-friendly manner.
Description
Technical Field
The present invention relates to a transformer, and more particularly to an energy-saving oil immersed transformer.
Background
The transformer is a device for changing ac voltage by using the principle of electromagnetic induction, and can be divided into: distribution transformers, power transformers, dry transformers, oil immersed transformers, single phase transformers, reactors, interference transformers, and the like.
The oil immersed transformer is a novel transformer which uses insulating oil as a cooling medium, mainly comprises an iron core, a winding, an oil tank, an insulating sleeve, a tapping switch, a gas relay and the like, wherein the iron core and the winding are all immersed in transformer oil, and the transformer oil is used for insulating and cooling.
Although oil-immersed transformers have many advantages, they still have disadvantages in use. For example, when an oil immersed transformer is used, heat is generated by the windings and the iron core due to the resistance, the heat is transferred to the transformer oil and heats the transformer oil, and the heated transformer oil can influence the normal use of the oil immersed transformer, so that the existing oil immersed transformer generally cools the transformer oil through the corrugated cooling fins. However, due to the lack of a heat recovery mechanism, heat energy carried by the transformer oil is easy to be lost in the cooling process, so that heat energy resources are wasted, and the transformer oil is unfavorable for energy conservation and environmental protection.
Accordingly, in order to solve the above-mentioned problems, it is necessary to provide an energy-saving oil-immersed transformer.
Disclosure of Invention
The invention aims to provide an energy-saving oil-immersed transformer, which can solve the problem of heat energy loss of transformer oil of the oil-immersed transformer.
In order to achieve the above object, the present invention provides an energy-saving oil-immersed transformer, comprising: the device comprises a transformer main body, a circulating mechanism, a temperature difference electricity conversion mechanism and a heat application mechanism;
the transformer main body is connected with a plurality of corrugated cooling fins, and a plurality of temperature sensors are arranged on the transformer main body;
the circulating mechanism is connected to one side wall of the transformer main body and comprises a mounting box, a vertical partition plate is arranged in the mounting box, a heat conversion cavity and a heat application cavity are formed between the vertical partition plate and the inner wall of the mounting box, an oil suction mechanism is arranged in the heat conversion cavity, and an oil return mechanism is arranged outside the mounting box;
the temperature difference heat exchange mechanism is arranged in the heat conversion cavity and is used for converting heat energy in the transformer oil absorbed by the oil absorption mechanism into electric energy for storage;
the heat application mechanism uses the electric energy stored by the temperature difference electricity exchanging mechanism to cool and dry the transformer main body.
In one or more embodiments, a pair of first transverse baffles are arranged in the heat conversion cavity and used for separating and forming a mounting cavity, a heat exchange cavity and an energy storage cavity;
and a pair of first transverse partition plates, a mounting cavity, a heat exchange cavity and an energy storage cavity are formed between the first transverse partition plates and the inner wall of the mounting box from top to bottom, the mounting cavity is used for mounting the first oil pump, the heat exchange cavity is used for placing a temperature difference electricity exchanging mechanism, and the energy storage cavity is used for placing a storage battery.
In one or more embodiments, the oil absorption mechanism comprises an oil pump I, the oil pump I is arranged in the installation cavity, an oil pumping pipe I and an oil discharging pipe I are connected to the oil pump I, one end of the oil pumping pipe I penetrates through the installation box and is connected with the transformer body, one end of the oil discharging pipe I is arranged in the heat exchange cavity, the oil pump I extracts transformer oil in the transformer body through the oil pumping pipe I, and the transformer oil is discharged into the heat exchange cavity through the oil discharging pipe I so as to exchange heat with the transformer oil by utilizing the temperature difference electricity exchange mechanism, so that heat energy carried by the transformer oil can be recycled, and further waste of heat energy in the transformer oil can be avoided.
In one or more embodiments, the vertical partition plate is provided with an overflow hole in a penetrating manner, and the heat exchange cavity is communicated with the heat application cavity through the overflow hole, so that the transformer oil subjected to heat exchange enters the heating cavity through the overflow hole, and the waste heat of the transformer oil is reused;
the mounting box lateral wall is connected with the fixed plate for install oil pump two.
In one or more embodiments, the oil return mechanism comprises a second oil pump, the second oil pump is installed on the fixing plate, a second oil pumping pipe and a second oil discharging pipe are connected to the second oil pump, one end of the second oil pumping pipe is communicated with the heat application cavity, one end of the second oil discharging pipe is communicated with the transformer body, the second oil pump extracts transformer oil in the heating cavity through the second oil pumping pipe, and the extracted transformer oil is reintroduced into the transformer body through the second oil discharging pipe, so that the transformer oil is used for cooling and cooling windings and iron cores in the transformer body.
In one or more embodiments, the thermoelectric heat exchange mechanism includes a first substrate, the first substrate is disposed in the heat exchange cavity, and the first substrate is used for sensing heat energy of transformer oil;
a plurality of heat absorption fins are connected between the first base plate and the first diaphragm plate on the upper side, the heat energy in the transformer oil can be further absorbed by the plurality of heat absorption fins, and the absorbed heat energy is transferred to the first base plate, so that the first base plate becomes a high heat source end;
the thermoelectric material is connected with a second substrate, the second substrate is a cold source end, the first substrate is a heat source end, and the thermoelectric materials are connected with the first substrate, so that the concentration of carriers at the first substrate is higher than that at the second substrate due to the fact that the first substrate is high in temperature and strong in thermal excitation effect, the carriers are diffused from the second substrate to the first substrate under the driving of diffusion effect, a potential difference is formed between the second substrates, and direct conversion of heat energy to electric energy is achieved;
the heat exchange cavity is internally provided with cold liquid, the second substrate is arranged in the cold liquid and used for reducing the temperature of the second substrate, so that the temperature difference between the first substrate and the second substrate is more obvious, and the effect of converting heat energy into electric energy is ensured;
and a protective sleeve is arranged on the outer side of the thermoelectric material and is used for protecting the thermoelectric material.
In one or more embodiments, the storage cavity is internally provided with a storage battery, and the first substrate and the second substrate are electrically connected with the storage battery, so that when a potential difference is formed between the second substrates, electric energy can be stored in the storage battery so as to supply power for the temperature sensor, the first oil pump and the second oil pump, and further the reutilization effect of the heat energy of transformer oil can be improved;
and the second oil pump is electrically connected with the storage battery.
In one or more embodiments, a pair of diaphragm plates II are arranged in the heat application cavity and are used for separating and forming a cooling cavity, a heating cavity and a pumping cavity;
a cooling cavity, a heating cavity and a pumping cavity are formed between the pair of second transverse partition plates, the vertical partition plates and the inner wall of the installation box from top to bottom;
the cooling cavity is used for containing volatile liquid so as to cool down and cool down the gas flowing in the exhaust pipe, so that the corrugated cooling fin is cooled down by using the gas with lower temperature, the high temperature of transformer oil is avoided, and the safety of equipment in the transformer main body is ensured;
the heating cavity is used for recovering the waste heat of the transformer oil, the waste heat is utilized to heat the gas flowing in the exhaust pipe, when rainy season occurs, the gas with temperature is blown to the corrugated radiating fins, so that the temperature of the corrugated radiating fins is raised, the drying speed of rainwater on the corrugated radiating fins can be further increased, the influence of moisture on equipment in the transformer main body is avoided, and the air extracting cavity is used for accommodating the air extracting pump;
the side wall of the installation box is provided with a plurality of heat dissipation holes, the air extraction cavity is communicated with the outside through the heat dissipation holes, so that the air extraction pump is conveniently cooled, high temperature of the air extraction pump during operation is avoided, and the operation environment of the air extraction pump is ensured;
the heat exchange cavity is communicated with the heating cavity through the overflow hole, so that the transformer oil subjected to heat exchange enters the heating cavity through the overflow hole, so that gas flowing in the exhaust pipe is heated when needed, the surface of the corrugated radiating fin can be heated by using gas with heat, the drying efficiency of rainwater or water drops on the surface of the corrugated radiating fin is quickened, the influence of moisture on the transformer main body is avoided, and the utilization effect of the heat energy of the transformer oil can be improved.
In one or more embodiments, the heat application mechanism includes an air pump, the air pump is electrically connected with the storage battery, the air pump is arranged in the air pumping cavity, the air pump is used for generating gas, the temperature of the corrugated radiating fins can be reduced by using low-temperature gas, the cooling speed of the transformer main body can be increased, and the surface of the corrugated radiating fins can be dried by using gas with heat, so that the transformer main body is prevented from being influenced by moisture;
the air pump is connected with an exhaust pipe, one end of the exhaust pipe, which is positioned outside the installation box, is connected with a straight pipe, the air pump pumps external air, the external air is conveyed into the straight pipe through the exhaust pipe, and the external air is sprayed to the corrugated radiating fins through a plurality of spray heads;
a pair of connecting columns are connected between the straight pipe and the transformer main body and used for fixing the straight pipe;
the straight pipe is connected with a plurality of spray heads, and the spray heads correspond to the corrugated cooling fins, so that gas sprayed by the spray heads can be blown to the corrugated cooling fins.
In one or more embodiments, a heat insulation pipe is slidably arranged outside the exhaust pipe, the heat insulation pipe penetrates through the upper side diaphragm plate II, two ends of the heat insulation pipe are respectively arranged in the cooling cavity and the heating cavity, the heat insulation pipe has a heat insulation effect, when the lower end of the heat insulation pipe is in contact with the lower side diaphragm plate II, the heat insulation pipe can completely wrap the side wall of the exhaust pipe positioned in the heating cavity, namely, transformer oil in the heating cavity can not heat gas flowing in the exhaust pipe, volatile liquid in the cooling cavity can be in contact with the exhaust pipe, so that the temperature of the gas flowing in the exhaust pipe can be reduced, a spray head can spray low-temperature gas, and the cooling efficiency of a transformer main body is accelerated by using the low-temperature gas;
when the upper end of the heat insulation pipe is contacted with the upper top wall of the mounting box, the heat insulation pipe can prevent volatile liquid from contacting with the exhaust pipe, so that transformer oil in the heating cavity can be directly contacted with the exhaust pipe, and then the transformer oil is used for heating gas flowing in the exhaust pipe, so that the spray head sprays gas with heat, and further the drying efficiency of rainwater on the surface of the corrugated radiating fin can be improved, and the transformer main body is prevented from being influenced by moisture;
the heat insulation pipe is connected with a pair of air cylinders, the air cylinders are electrically connected with the storage battery, the storage battery supplies power for the pair of air cylinders, and the air cylinders are used for controlling the lifting of the heat insulation pipe so as to realize the conversion of the temperature of the injected gas;
the cooling cavity is further provided with volatile liquid, when the volatile liquid is in direct contact with the exhaust pipe, the volatile liquid can reduce the temperature of flowing gas in the exhaust pipe, so that the nozzle sprays low-temperature gas, the temperature of the corrugated radiating fin is reduced by utilizing the low-temperature gas, and the cooling efficiency of the transformer main body can be further improved.
Compared with the prior art, the energy-saving oil-immersed transformer can recycle heat energy carried by transformer oil in the oil-immersed transformer through the arrangement of the corresponding mechanism, so that the waste of heat energy in the transformer oil can be effectively avoided, and the energy-saving and environment-friendly oil-immersed transformer is convenient to use.
Drawings
Fig. 1 is a perspective view of an energy-saving oil-immersed transformer according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of the structure at a in fig. 1.
Fig. 3 is a schematic diagram of the structure at B in fig. 1.
Fig. 4 is a side view of an energy-efficient oil-immersed transformer according to an embodiment of the present invention.
Fig. 5 is a perspective view of an energy-saving oil-immersed transformer according to an embodiment of the present invention.
Fig. 6 is a schematic view of the structure at C in fig. 5.
Fig. 7 is a schematic view of the structure at D in fig. 5.
Fig. 8 is a schematic view of the structure at E in fig. 5.
The main reference numerals illustrate:
the heat-insulating type transformer comprises a transformer body, 101-corrugated cooling fins, 102-temperature sensors, 2-circulation mechanisms, 201-mounting boxes, 202-vertical partition plates, 203-horizontal partition plates, 204-oil pumps, 205-oil pumping pipes, 206-oil pumping pipes, 207-overflow holes, 208-fixed plates, 209-oil pumps, 210-oil pumping pipes, 211-oil pumping pipes, 212-heat-dissipating holes, 213-horizontal partition plates, 214-cooling pipes, 3-temperature-difference electricity-exchanging mechanisms, 301-substrate one, 302-heat-absorbing fins, 303-thermoelectric materials, 304-substrate two, 305-storage batteries, 306-cold liquid, 307-protective sleeves, 4-heat-applying mechanisms, 401-air pumps, 402-exhaust pipes, 403-straight pipes, 404-connecting columns, 405-heat-insulating pipes, 406-air cylinders and 407-volatile liquids.
Detailed Description
The following detailed description of embodiments of the invention is, therefore, to be taken in conjunction with the accompanying drawings, and it is to be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the term "comprise" or variations thereof such as "comprises" or "comprising", etc. will be understood to include the stated element or component without excluding other elements or components.
As shown in fig. 1 to 8, an energy-saving oil-immersed transformer according to an embodiment of the present invention includes: a transformer body 1, a circulation mechanism 2, a temperature difference change mechanism 3 and a heat application mechanism 4.
The transformer main body 1 is connected with a plurality of corrugated cooling fins 101, and the corrugated cooling fins 101 are used for cooling the transformer main body 1, so that high temperature phenomenon of equipment in the transformer main body 1 is avoided, and safety of the equipment in the transformer main body 1 is guaranteed.
In addition, a plurality of temperature sensors 102 are installed on the transformer main body 1, and the temperature sensors 102 are used for monitoring the temperature of transformer oil in the transformer main body 1, and can also monitor the external temperature so as to control the operation state of the heat application mechanism 4, namely, control the spray head to spray hot air and cold air.
Specifically, still be equipped with humidity transducer on the transformer main part 1 for monitor external humidity, when humidity is too high, the shower nozzle can spray steam for dry ripple fin 101 surperficial moisture, avoid transformer main part 1 to receive the influence of moisture, guarantee the operational safety of transformer main part 1.
As shown in fig. 1 to 8, the circulation mechanism 2 is connected to one side wall of the transformer main body 1, and the circulation mechanism 2 is used for circularly extracting transformer oil in the transformer main body 1 so as to recycle heat energy in the transformer oil, avoid loss of heat energy in the transformer oil, and facilitate energy-saving and environment-friendly utilization of the transformer main body 1.
The circulation mechanism 2 comprises a mounting box 201, a vertical partition plate 202 is arranged in the mounting box 201, a heat conversion cavity and a heat application cavity are formed between the vertical partition plate 202 and the inner wall of the mounting box 201, and the heat conversion cavity is used for converting heat energy in transformer oil so that the heat energy can be converted into electric energy, and the electric energy is stored by a storage battery 305.
In addition, a pair of diaphragm plates 203 are arranged in the heat conversion cavity and are used for separating and forming an installation cavity, a heat exchange cavity and an energy storage cavity.
Preferably, diaphragm one 203 is a thermally insulating material that protects oil pump one 204 and battery 305 from the thermal energy of the transformer oil.
Specifically, a mounting cavity, a heat exchange cavity and an energy storage cavity are formed between the first diaphragm plate 203, the inner wall of the mounting box 201 and the vertical diaphragm plate 202 from top to bottom, the mounting cavity is used for mounting the first oil pump 204, the heat exchange cavity is used for placing the temperature difference heat exchange mechanism 3, and the energy storage cavity is used for placing the storage battery 305.
As shown in fig. 1 to 8, an oil absorption mechanism is arranged in the heat conversion cavity and is used for extracting transformer oil in the transformer main body 1, so that on one hand, the transformer oil in the transformer main body 1 can be cooled, equipment in the transformer main body 1 is prevented from being damaged due to high temperature of the transformer oil, and on the other hand, heat energy carried by the transformer oil can be recycled in the cooling process of the transformer oil, and waste of heat energy resources is avoided.
The oil suction mechanism comprises an oil pump I204, the oil pump I204 is arranged in the installation cavity, the oil pump I204 is connected with an oil pumping pipe I205 and an oil discharging pipe I206, one end of the oil pumping pipe I205 penetrates through the installation box 201 to be connected with the transformer main body 1, and one end of the oil discharging pipe I206 is arranged in the heat exchange cavity.
The first oil pump 204 pumps the transformer oil in the transformer main body 1 through the first oil pumping pipe 205, and the first oil pumping pipe 206 discharges the transformer oil into the heat exchange cavity so as to convert heat energy in the transformer oil by using the temperature difference heat exchange mechanism 3, so that heat energy carried by the transformer oil can be recycled, and further waste of heat energy in the transformer oil can be avoided.
Preferably, an insulation layer is provided on the outside of the first pumping pipe 205 to prevent heat loss when the transformer oil flows in the first pumping pipe 205.
In addition, the vertical partition plate 202 is provided with an overflow hole 207 in a penetrating manner, and the heat exchange cavity is communicated with the heat application cavity through the overflow hole 207, so that the transformer oil subjected to heat exchange enters the heating cavity through the overflow hole 207, and the waste heat of the transformer oil is reused.
Specifically, the heat exchange cavity is communicated with the heating cavity through the overflow hole 207, so that the transformer oil subjected to heat exchange enters the heating cavity through the overflow hole 207, so that gas flowing in the exhaust pipe 402 is heated when needed, the surface of the corrugated cooling fin 101 can be heated by using gas with heat, the drying efficiency of rainwater or water drops on the surface of the corrugated cooling fin 101 is quickened, the influence of moisture on the transformer main body 1 is avoided, and the utilization effect of the heat energy of the transformer oil can be improved.
Preferably, the overflow holes 207 are arranged at the position of the vertical partition 202 close to the upper transverse partition one 203, so that the time for discharging the transformer oil out of the heat exchange cavity is delayed, the transformer oil can exchange heat fully, and the loss of heat energy is avoided.
In addition, a fixing plate 208 is connected to the outer side wall of the installation box 201 for installing the oil pump two 209.
As shown in fig. 1 to 8, an oil return mechanism is provided outside the installation tank 201 for allowing the transformer oil in the installation tank 201 to re-enter the transformer body 1 so as to reuse the transformer oil.
The oil return mechanism comprises a second oil pump 209, the second oil pump 209 is arranged on the fixed plate 208, the second oil pump 209 is connected with a second oil pumping pipe 210 and a second oil discharging pipe 211, one end of the second oil pumping pipe 210 is communicated with the heat application cavity, and one end of the second oil discharging pipe 211 is communicated with the transformer main body 1.
The oil pump II 209 pumps the transformer oil in the heating cavity through the oil pumping pipe II 210, and the pumped transformer oil is reintroduced into the transformer body 1 through the oil pumping pipe II 211, so that the transformer oil is used for cooling the windings and the iron core in the transformer body 1.
In addition, a pair of diaphragm plates II 213 are arranged in the heat application cavity and are used for separating and forming a cooling cavity, a heating cavity and a pumping cavity.
Specifically, a cooling chamber, a warming chamber and a pumping chamber are formed from top to bottom between the pair of diaphragm plates two 213 and the vertical diaphragm plates 202 and the inner wall of the installation box 201.
The cooling cavity is used for containing the volatile liquid 407 so as to cool down and cool down the gas flowing in the exhaust pipe 402, so that the corrugated cooling fin 101 is cooled down by using the gas with lower temperature, the cooling efficiency in the transformer main body 1 is improved, and the safety of equipment in the transformer main body 1 is ensured.
The warming chamber is used for further recovering the waste heat of the transformer oil, and the gas flowing in the exhaust pipe 402 is heated by using the waste heat of the transformer oil. When rainy season appears, the shower nozzle can spray to ripple fin 101 has thermal gas for ripple fin 101 intensifies, and then is used for accelerating the drying rate of rainwater on the ripple fin 101, avoids the equipment in the transformer main part 1 to receive the influence of moisture, guarantees the safe operation of equipment in the transformer main part 1, and the chamber of bleeding is used for holding aspiration pump 401.
In addition, be equipped with a plurality of louvres 212 on the mounting box 201 lateral wall, the chamber of bleeding is linked together with the external world through louvres 212, is convenient for cool down aspiration pump 401, avoids aspiration pump 401 to appear high temperature when the operation, guarantees aspiration pump 401's operational environment.
As shown in fig. 1 to 8, the temperature difference electricity changing mechanism 3 is arranged in the heat conversion cavity, and the temperature difference electricity changing mechanism 3 is used for converting heat energy in the transformer oil absorbed by the oil absorbing mechanism into electric energy for storage.
The thermoelectric conversion mechanism 3 comprises a first substrate 301, the first substrate 301 is arranged in the heat exchange cavity, and the first substrate 301 is used for sensing heat energy of transformer oil and further used for forming a heat source end.
Preferably, the first substrate 301 is made of Cu.
In addition, a plurality of heat absorbing fins 302 are connected between the first substrate 301 and the first upper diaphragm 203, and the heat absorbing fins 302 can further absorb heat energy in the transformer oil and transfer the absorbed heat energy to the first substrate 301, so that the first substrate 301 becomes a high heat source end.
Specifically, a pair of thermoelectric materials 303 are connected to the lower end of the first substrate 301, and a second substrate 304 is connected to the thermoelectric materials 303. The second substrate 304 is a cold source end, the first substrate 301 is a heat source end, the pair of thermoelectric materials 303 are connected to the first substrate 301, and the first substrate 301 has high temperature and strong thermal excitation effect, so that the concentration of carriers at the first substrate 301 is higher than that at the second substrate 304, and the carriers are diffused from the first substrate 301 to the second substrate 304 under the driving of diffusion effect, so that a potential difference is formed between the pair of second substrates 304, and the direct conversion from heat energy to electric energy is realized.
Further, the pair of thermoelectric materials 303 is divided into a P-type thermoelectric material and an N-type thermoelectric material.
Preferably, the second substrate 304 is Al 2 O 3 A material.
As shown in fig. 1 to 8, a storage battery 305 is disposed in the energy storage cavity, and the second pair of substrates 304 are electrically connected to the storage battery 305.
Because the storage battery 305 is electrically connected with the pair of second substrates 304, when a potential difference is formed between the pair of second substrates 304, electric energy can be stored in the storage battery 305 so as to supply power to the temperature sensor 102, the first oil pump 204 and the second oil pump 209, and further, the recycling effect of the heat energy of the transformer oil can be improved.
Preferably, a controller is further disposed in the energy storage cavity, and the storage battery 305 is electrically connected to the controller, and is used for controlling the operation of the air pump 401 and the air cylinder 406.
The second oil pump 209 is electrically connected with the storage battery 305, and uses the storage battery 305 to supply power, so that the energy consumption of the transformer main body 1 is effectively reduced.
In addition, the heat exchange cavity is also provided with cold liquid 306, and the second substrate 304 is arranged in the cold liquid 306 and used for reducing the temperature of the second substrate 304, so that the temperature difference between the first substrate 301 and the second substrate 304 is more obvious, and the effect of converting heat energy into electric energy is ensured.
Preferably, the cold liquid 306 is water.
Specifically, a protective sheath 307 is provided on the outside of the thermoelectric material 303 for protecting the thermoelectric material 303.
In addition, the outer side of the second substrate 304 is provided with an insulating protection sleeve, so that the second substrate 304 is prevented from being connected into a passage in the cold liquid 306, and the second substrate 304 can be further ensured to charge the storage battery 305.
As shown in fig. 1 to 8, the heat application mechanism 4 cools and dries the transformer body 1 using the electric energy stored by the temperature difference exchanging mechanism 3.
The heat application mechanism 4 includes a pump 401, the pump 401 is electrically connected with the storage battery 305, and the pump 401 is disposed in the pumping chamber. The air pump 401 is used for generating air, for example, the temperature of the corrugated fins 101 can be reduced by using low-temperature air, and the cooling speed of the transformer main body 1 can be increased, and the surface of the corrugated fins 101 can be dried by using air with heat, so that the transformer main body 1 is prevented from being influenced by moisture.
Preferably, the air inlet end of the air pump 401 is provided with a dust screen, so that dust is prevented from affecting the normal operation of the air pump 401.
Further, an exhaust pipe 402 is connected to the suction pump 401, a straight pipe 403 is connected to an end of the exhaust pipe 402 located outside the mounting case 201, and the suction pump 401 sucks the external air, feeds the external air into the straight pipe 403 through the exhaust pipe 402, and sprays the external air to the corrugated fins 101 through a plurality of shower heads.
Preferably, the exhaust pipe 402 is a heat conductive metal pipe, so that the volatile liquid 407 or the residual oil of the transformer in the heating cavity can change the temperature of the gas flowing in the exhaust pipe 402.
Specifically, a pair of connecting posts 404 for fixing the straight tube 403 is connected between the straight tube 403 and the transformer body 1.
Further, a plurality of shower heads are connected to the straight pipe 403, the shower heads corresponding to the corrugated fins 101, so that the gas sprayed by the shower heads can be blown toward the corrugated fins 101. When low-temperature gas is sprayed, the cooling efficiency of the transformer main body 1 can be accelerated, and the safety of equipment in the transformer main body 1 is ensured. When the gas with heat is injected, the surface of the corrugated fin 101 can be dried, preventing the devices inside the transformer body 1 from being affected by moisture.
As shown in fig. 1 to 8, a heat insulating pipe 405 is slidably disposed outside the exhaust pipe 402, the heat insulating pipe 405 penetrates through the upper diaphragm plate two 213, and both ends of the heat insulating pipe 405 are respectively disposed in the cooling chamber and the heating chamber, that is, in the state shown in fig. 5, the heat insulating pipe 405 has a heat insulating effect.
When the lower end of the heat insulation pipe 405 contacts with the second lower diaphragm 213, the heat insulation pipe 405 can completely wrap the side wall of the exhaust pipe 402 in the heating cavity, that is, the transformer oil in the heating cavity cannot contact with the side wall of the exhaust pipe 402, that is, the gas flowing in the exhaust pipe 402 cannot be heated, and the volatile liquid 407 in the cooling cavity can contact with the side wall of the exhaust pipe 402 for reducing the temperature of the gas flowing in the exhaust pipe 402, so that the nozzle can spray low-temperature gas, and the cooling efficiency of the transformer main body 1 is accelerated by using the low-temperature gas.
When the upper end of the heat insulation pipe 405 contacts with the upper top wall of the mounting box 201, the heat insulation pipe 405 can block the volatile liquid 407 from contacting with the side wall of the exhaust pipe 402, so that the transformer oil in the heating cavity can directly contact with the side wall of the exhaust pipe 402 and further be used for heating the gas flowing in the exhaust pipe 402, so that the spray head sprays the gas with heat, the drying efficiency of the rainwater on the surface of the corrugated cooling fin 101 can be improved, and the influence of moisture on the transformer main body 1 is avoided.
Wherein, be connected with a pair of cylinder 406 on the insulating tube 405, cylinder 406 and battery 305 electric connection, battery 305 is a pair of cylinder 406 power supply, and cylinder 406 is used for controlling the lift of insulating tube 405, and then can realize the conversion of jetting gas temperature, satisfies the user demand of different scenes.
In addition, the cooling cavity is further provided with a volatile liquid 407, when the volatile liquid 407 is in direct contact with the exhaust pipe 402, the volatile liquid 407 can reduce the temperature of gas flowing in the exhaust pipe 402, so that the nozzle sprays low-temperature gas, the temperature of the corrugated cooling fin 101 is reduced by using the low-temperature gas, and the cooling efficiency of the transformer main body 1 can be further improved.
Preferably, volatile liquid 407 is a low boiling point liquid, such as ethanol or acetone.
Specifically, a plurality of cooling pipes 214 are arranged on the side wall of the installation box 201, the cooling pipes 214 are made of heat-conducting metal, and the inside of the cooling pipes 214 is communicated with the inside of the cooling cavity. When the outside air temperature is high, that is, the temperature of the gas flowing in the exhaust pipe 402 is high, the temperature of the gas flowing in the exhaust pipe 402 can be reduced by the volatile liquid 407.
When the volatile liquid 407 continuously absorbs the heat of the gas flowing in the exhaust pipe 402, part of the volatile liquid 407 can be vaporized and enter the cooling pipe 214, and the vaporized volatile liquid 407 is precooled to be changed into liquid again, so that the liquid is reciprocally used for guaranteeing the low temperature of the volatile liquid 407, so that the volatile liquid 407 can continuously reduce the temperature of the gas flowing in the exhaust pipe 402, and the nozzle can jet low-temperature gas for accelerating the cooling efficiency of the transformer main body 1.
In specific use, heat generated by windings and cores in the transformer body 1 is transferred to transformer oil, and the temperature of the transformer oil is monitored by the temperature sensor 102.
When the temperature sensor 102 detects that the transformer oil temperature is higher, the first oil pump 204 operates, the first oil pump 204 pumps the transformer oil in the transformer main body 1 through the first oil pumping pipe 205, and the transformer oil is discharged into the heat exchange cavity through the first oil discharging pipe 206.
The substrate I301 and the plurality of heat absorbing fins 302 in the heat exchange cavity absorb heat of transformer oil, so that the substrate I301 becomes a heat source end, the substrate II 304 becomes a heat source end because the substrate II 304 is arranged in cold liquid 306 with low temperature, the thermal excitation effect at the substrate I301 is stronger, the carrier concentration at the substrate I301 is higher than that at the substrate II 304, the carrier is diffused from the substrate I301 to the substrate II 304 under the driving of the diffusion effect, thereby forming a potential difference between the pair of substrates II 304, and charging a storage battery 305 connected between the pair of substrates II 304, so that the direct conversion of the heat energy of the transformer oil to the electric energy of the storage battery 305 is realized, the heat energy carried by the transformer oil can be recycled, and the waste of the heat energy in the transformer oil can be avoided.
The transformer oil after heat exchange enters the heating cavity through the overflow hole 207, the storage battery 305 is used for supplying power to the oil pump II 209, the energy consumption of the transformer main body 1 is effectively reduced, the oil pump II 209 extracts the transformer oil in the heating cavity through the oil extraction pipe II 210, and the extracted transformer oil is reintroduced into the transformer main body 1 through the oil extraction pipe II 211, so that the transformer oil is used for cooling the windings and the iron core in the transformer main body 1, and the reutilization effect of the transformer oil is improved.
In addition, the temperature sensor 102 can monitor the outside air temperature, when the outside air temperature is higher, the storage battery 305 supplies power to the air cylinder 406, so that the air cylinder 406 stretches, the lower end of the heat insulation pipe 405 contacts with the second transverse partition plate 213 at the lower side, the heat insulation pipe 405 can completely wrap the side wall of the exhaust pipe 402 in the heating cavity, transformer oil in the heating cavity is prevented from contacting with the side wall of the exhaust pipe 402, and volatile liquid 407 in the cooling cavity can directly contact with the side wall of the exhaust pipe 402.
The operation of the air pump 401 is controlled, the air pump 401 pumps external gas and conveys the external gas through the exhaust pipe 402, the temperature of the flowing gas in the exhaust pipe 402 is reduced by utilizing the volatile liquid 407, the low-temperature gas enters the straight pipe 403 and is sprayed to the corrugated cooling fin 101 through a plurality of spray heads, so that the cooling efficiency of the transformer main body 1 is accelerated, and the safety of equipment in the transformer main body 1 is ensured.
When the volatile liquid 407 continuously cools the temperature of the gas flowing in the exhaust pipe 402, the volatile liquid 407 also absorbs the heat of the gas flowing in the exhaust pipe 402, so that part of the volatile liquid 407 can be vaporized and enter the cooling pipe 214, and the vaporized volatile liquid 407 is precooled to be changed into liquid again, so that the vaporized volatile liquid 407 is reciprocated to ensure the low temperature of the volatile liquid 407, so that the volatile liquid 407 can continuously reduce the temperature of the gas flowing in the exhaust pipe 402.
In addition, the humidity sensor installed on the transformer main body 1 can also monitor the humidity of the outside air, if the humidity is too large, the air cylinder 406 contracts, so that the upper end of the heat insulation pipe 405 contacts with the upper top wall of the installation box 201, the heat insulation pipe 405 can separate the volatile liquid 407 from contacting with the side wall of the exhaust pipe 402, transformer oil in the heating cavity can directly contact with the side wall of the exhaust pipe 402, the gas flowing in the exhaust pipe 402 is heated by using the waste heat of the transformer oil, the nozzle can jet the gas with heat, the drying efficiency of rainwater or moisture on the surface of the corrugated cooling fin 101 can be quickened, the transformer main body 1 is prevented from being influenced by the moisture, and the safety of equipment in the transformer main body 1 is ensured.
The foregoing descriptions of specific exemplary embodiments of the present invention are presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain the specific principles of the invention and its practical application to thereby enable one skilled in the art to make and utilize the invention in various exemplary embodiments and with various modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (8)
1. An energy-saving oil immersed transformer, comprising:
the transformer comprises a transformer main body, wherein a plurality of corrugated cooling fins are connected to the transformer main body, and a plurality of temperature sensors are arranged on the transformer main body;
the circulating mechanism is connected to one side wall of the transformer main body and comprises a mounting box, a vertical partition plate is arranged in the mounting box, a heat conversion cavity and a heat application cavity are formed between the vertical partition plate and the inner wall of the mounting box, an oil suction mechanism is arranged in the heat conversion cavity, an oil return mechanism is arranged outside the mounting box, a pair of first transverse partition plates are arranged in the heat conversion cavity, and a mounting cavity, a heat exchange cavity and an energy storage cavity are formed between the first transverse partition plates, the inner wall of the mounting box and the vertical partition plates from top to bottom;
the temperature difference electricity conversion mechanism is arranged in the heat conversion cavity and is used for converting heat energy in the transformer oil absorbed by the oil absorption mechanism into electric energy for storage;
the temperature difference heat exchange mechanism comprises a first substrate, the first substrate is arranged in the heat exchange cavity, a plurality of heat absorption fins are connected between the first substrate and the upper side of the first transverse partition plate, a pair of thermoelectric materials are connected to the lower end of the first substrate, a second substrate is connected to the thermoelectric materials, cold liquid is further arranged in the heat exchange cavity, the second substrate is arranged in the cold liquid, a protective sleeve is arranged on the outer side of the thermoelectric materials, a storage battery is arranged in the energy storage cavity, the first substrate is electrically connected with the storage battery, the first substrate is a heat source end, the first substrate is made of Cu material, the second substrate is a cold source end, and the second substrate is Al 2 O 3 The thermoelectric materials are divided into P-type thermoelectric materials and N-type thermoelectric materials, and an insulating protective sleeve is arranged on the outer side of the second substrate;
the heat application mechanism is used for cooling and drying the transformer main body by applying the electric energy stored by the temperature difference electricity conversion mechanism;
the heat application chamber is internally provided with a pair of diaphragm plates II, a pair of diaphragm plates II with vertical partition plates with be formed with cooling chamber, heating chamber and pumping chamber from top to bottom between the installation incasement wall, be equipped with a plurality of louvres on the installation case lateral wall, the pumping chamber is linked together with the external world through the louvre, the heat application mechanism includes the aspiration pump, the aspiration pump is located pumping intracavity, be connected with the blast pipe on the aspiration pump, the blast pipe is located the one end outside the installation case is connected with the straight tube, the straight tube with be connected with a pair of spliced pole between the transformer main part, be connected with a plurality of shower nozzles on the straight tube, the shower nozzle with ripple fin is corresponding, the blast pipe slides outward and is equipped with the heat insulating tube, the heat insulating tube link up the upside diaphragm plates II, the heat insulating tube both ends are located respectively the cooling chamber with in the heating chamber, be connected with a pair of cylinder on the heat insulating tube, the cooling chamber still is equipped with the volatile liquid.
2. The energy-saving oil immersed transformer according to claim 1, wherein the oil suction mechanism comprises an oil pump I, the oil pump I is arranged in the installation cavity, an oil pumping pipe I and an oil discharging pipe I are connected to the oil pump I, one end of the oil pumping pipe I penetrates through the installation box to be connected with the transformer body, and one end of the oil discharging pipe I is arranged in the heat exchange cavity.
3. The energy-saving oil immersed transformer of claim 2, wherein overflow holes are formed in the vertical partition plate in a penetrating manner, the heat exchange cavity is communicated with the heat application cavity through the overflow holes, and a fixing plate is connected to the outer side wall of the installation box.
4. The energy-saving oil immersed transformer according to claim 3, wherein the oil return mechanism comprises a second oil pump, the second oil pump is mounted on the fixed plate, the second oil pump is connected with a second oil pumping pipe and a second oil discharging pipe, one end of the second oil pumping pipe is communicated with the heat application cavity, and one end of the second oil discharging pipe is communicated with the transformer body.
5. The energy-saving oil-immersed transformer of claim 4, wherein the second oil pump is electrically connected with the storage battery.
6. The energy-saving oil immersed transformer of claim 5, wherein the heat exchange cavity is communicated with the warming cavity through the overflow hole.
7. The energy efficient oil immersed transformer of claim 6, wherein said air pump is electrically connected to said battery.
8. The energy efficient oil immersed transformer of claim 7, wherein said air cylinder is electrically connected to said battery.
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| CN116130211A (en) | 2023-05-16 |
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