CN111223642A - Oil-immersed transformer cooling device - Google Patents
Oil-immersed transformer cooling device Download PDFInfo
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- CN111223642A CN111223642A CN202010200854.XA CN202010200854A CN111223642A CN 111223642 A CN111223642 A CN 111223642A CN 202010200854 A CN202010200854 A CN 202010200854A CN 111223642 A CN111223642 A CN 111223642A
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- 238000001816 cooling Methods 0.000 title claims abstract description 75
- 230000017525 heat dissipation Effects 0.000 claims abstract description 113
- 238000009423 ventilation Methods 0.000 claims description 8
- 230000009969 flowable effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 239000007921 spray Substances 0.000 abstract description 3
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- 230000000694 effects Effects 0.000 description 4
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- 239000010935 stainless steel Substances 0.000 description 3
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- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
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- 238000005507 spraying Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
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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
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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
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Abstract
The invention discloses a cooling device for an oil-immersed transformer, and belongs to the technical field of transformers. The cooling device of the oil-immersed transformer comprises a transformer body, a heat dissipation box and an oil pump, wherein the heat dissipation box and the oil pump are arranged outside the transformer body and are communicated with the transformer body; wherein, the transformer body is internally provided with insulating oil which circulates and flows and is used for cooling the transformer body; the heat dissipation box is used for cooling the hot insulating oil from the transformer body; the oil pump provides the power of insulating oil circulation at transformer body and radiating box. According to the cooling device for the oil-immersed transformer, the hot insulating oil is cooled in the heat dissipation box outside the transformer body, so that the cooling efficiency of the insulating oil is improved; the insulating oil circularly flows through the oil pump, so that the fluidity of the insulating oil is improved, the cooling efficiency of the insulating oil is further improved, and the load capacity of the transformer body is improved; auxiliary heat dissipation devices such as water spray and the like are avoided, and the use safety of the transformer body is improved.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to a cooling device of an oil-immersed transformer.
Background
Under the influence of high-temperature weather in summer, the loads mainly comprise cooling electrical appliances such as air conditioners, fans and the like, the load fluctuation is large, the load impact borne by the distribution transformer is large, the temperature rise is high, and then the distribution transformer is burnt out due to high temperature rise. The transformer insulation is subjected to high temperature, the service life of the transformer insulation is obviously reduced, and therefore heat generated during operation of the transformer is timely led out, and the regulation and control of the temperature of the transformer have important influences on safe operation and economic cost of the power industry.
The oil-immersed transformer has the characteristics of low loss, low price and the like, and is widely applied to a power system. The interior of the transformer relies on oil as a cooling medium, which transfers heat to the atmosphere by cooperating with an external cooler. The cooling mode is difficult to ensure the safe and stable operation of the transformer in the environment of large electrical load and continuous high temperature in summer.
Currently, in order to solve the problem of heat dissipation and cooling of the power transformer at a specific time interval, corresponding auxiliary heat dissipation and cooling systems or devices have been researched frequently. In the prior art, the most common mode is that a water spraying mode is adopted, because the transformer and the insulator thereof are exposed in polluted atmosphere for a long time, the surface is gradually gathered with pollutants, the insulating strength is reduced during water spraying, the insulator is easy to cause flashover, and potential safety hazards of people and equipment exist; or the fan is used for blowing, but the blower or the fan is used for blowing the transformer, and because the specific heat capacity of air is low and the heat conduction efficiency is poor, enough heat is difficult to take away under the condition that the transformer is heated quickly under high load, and the cooling effect is poor; and the auxiliary heat dissipation of the transformer is increased by placing ice blocks and the like, but the transformer is cooled by an external medium, the heat of the transformer needs to be firstly conducted to the transformer oil and then to the transformer shell, and then the shell is cooled by a physical method, so that the heat transfer chain is long, and the efficiency is low.
If the cooling device cannot be used due to objective reasons, the transformer stops running or runs at a low load only by switching off and limiting the power, the transformer naturally cools, but in the time period of high load of the distribution transformer, which is also the peak period of power consumption of a client, the power consumption demand is very large, and at the moment, the work and life of the client are seriously influenced by power failure or power limitation; under the existing system, the power failure index assessment task is very heavy and is difficult to complete, and the precious household index during power failure is occupied by cooling by a power failure or power limiting method.
Disclosure of Invention
The invention aims to provide a cooling device of an oil-immersed transformer, which has high cooling efficiency, thereby improving the load capacity of the transformer and improving the use safety of the transformer.
In order to realize the purpose, the invention adopts the following technical scheme:
an oil-immersed transformer cooling device comprises a transformer body, a heat dissipation box and an oil pump, wherein the heat dissipation box and the oil pump are arranged outside the transformer body and are communicated with the transformer body; wherein,
the transformer comprises a transformer body, wherein insulating oil which flows circularly and is used for cooling the transformer body is arranged in the transformer body;
a heat dissipation tank for cooling the hot insulating oil from the transformer body;
and the oil pump provides power for the circulation of the insulating oil between the transformer body and the heat dissipation box.
Optionally, the oil-immersed transformer cooling device further comprises an oil delivery pipe for communicating the transformer body, the heat dissipation tank and the oil pump, and a control valve arranged on the oil delivery pipe, wherein the control valve is used for switching on and off the oil delivery pipe.
Optionally, the oil-filled transformer cooling device further includes a hot oil tank disposed outside the transformer body and communicating with the transformer body and the heat dissipation tank, the hot oil tank being configured to store hot insulating oil from the transformer body, the hot insulating oil being capable of flowing into the heat dissipation tank.
Optionally, the oil-filled transformer cooling device further comprises a cold oil tank for storing the insulating oil cooled by the heat dissipation tank, and the cooled insulating oil can flow into the transformer body.
Alternatively, the heat radiating tank includes a heat radiating pipe in an S shape, and the insulating oil flows in the heat radiating pipe.
Optionally, a radiator for cooling the insulating oil is arranged on the radiating tank, and the radiator comprises an air-cooled radiator, and/or a water-cooled radiator, and/or an evaporative radiator.
Optionally, the heat dissipation box further comprises heat dissipation fins mounted on the heat dissipation pipe.
Optionally, the heat radiating box includes a heat radiating housing for supporting the heat radiating pipe.
Optionally, the heat dissipation pipe includes at least two layers of pipes arranged up and down, the heat dissipation box includes an air inlet arranged on the heat dissipation housing and an air outlet arranged on the top of the heat dissipation housing, the heat dissipation box further includes an air blower connected to the air inlet, and the air blower is arranged opposite to the air outlet.
Optionally, a ventilation top cover capable of being opened and closed is arranged on the air inlet.
The invention has the beneficial effects that:
according to the cooling device for the oil-immersed transformer, provided by the invention, the hot insulating oil is cooled in the heat dissipation box outside the transformer body, so that the cooling efficiency of the insulating oil is improved; the oil pump pumps hot insulating oil into the heat dissipation box from the transformer body, and the insulating oil cooled in the heat dissipation box flows into the transformer body, and the insulating oil circularly flows between the transformer body and the heat dissipation box through the oil pump, so that the fluidity of the insulating oil is improved, the cooling efficiency of the insulating oil is further improved, and the load capacity of the transformer body is improved; auxiliary heat dissipation devices such as water spray and the like are avoided, and the use safety of the transformer body is improved.
Drawings
Fig. 1 is a schematic structural diagram of an oil-immersed transformer cooling device according to an embodiment of the present invention;
FIG. 2 is a top cross-sectional view of a heat sink box according to an embodiment of the present invention;
fig. 3 is a side sectional view of a heat sink box according to an embodiment of the present invention.
In the figure:
1-a transformer body; 11-a first oil inlet; 12-a first oil outlet;
2-a hot oil tank;
3-a heat dissipation box; 31-radiating pipes; 311-upper pipe; 312-lower tube; 32-a heat sink housing; 33-a heat dissipation bracket; 34-a ventilation top cover; 35-a blower; 36-an air inlet; 37-a second oil inlet; 38-a second oil outlet;
4-a cold oil tank; 5-a control valve; 6-an oil delivery pipe;
71-a carrying platform; 72-wheels;
8-oil pump.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The transformer is a device for changing alternating voltage by utilizing the principle of electromagnetic induction, a coil and an iron core (magnetic core) of the transformer generate heat under the action of electricity and magnetism, the cooling mode adopted in the prior art is that insulating oil circularly flowing in the transformer cools a winding, the heat of the transformer is firstly conducted to the insulating oil, then is conducted to a transformer shell through the insulating oil, and then the shell is cooled by a physical method; the insulating oil that self is heated after cooling the winding need carry out heat exchange cooling through the radiator and then get into the transformer in to the winding circulative cooling, and the tradition mainly adopts modes such as fan is bloied or natural heat dissipation, and cooling efficiency is low, and the load bearing capacity of transformer is weak, hardly guarantees transformer safety and stability and moves under the big and continuous high temperature environment of electrical load, has reduced the life of transformer. To solve the above problem, two embodiments are provided.
Example one
The embodiment provides an oil-immersed transformer cooling device, as shown in fig. 1, which includes a transformer body 1, a heat dissipation tank 3 and an oil pump 8, wherein the heat dissipation tank 3 is arranged outside the transformer body 1 and is communicated with the transformer body 1; wherein, the transformer body 1 is internally provided with circularly flowing insulating oil which is used for cooling the transformer body 1; the heat dissipation tank 3 is used for cooling the hot insulating oil from the transformer body 1; the oil pump 8 provides power for the circulation of the insulating oil between the transformer body 1 and the heat dissipation tank 3.
Specifically, the hot insulating oil is cooled in the heat dissipation box 3 outside the transformer body 1, so that the cooling efficiency of the insulating oil is improved; the oil pump 8 pumps hot insulating oil from the transformer body 1 into the heat dissipation tank 3, conveys the insulating oil cooled in the heat dissipation tank 3 back to the transformer body 1, and enables the insulating oil to circularly flow between the transformer body 1 and the heat dissipation tank 3 through the oil pump 8, so that the fluidity of the insulating oil is improved, the cooling efficiency of the insulating oil is further improved, and the load capacity of the transformer body 1 is improved; auxiliary heat dissipation devices such as water spray and the like are avoided, and the use safety of the transformer body 1 is improved.
In this embodiment, cooling device is still including setting up in transformer body 1 outside and with transformer body 1 and the hot oil tank 2 of heat dissipation case 3 intercommunication, hot oil tank 2 is used for storing the hot insulating oil from transformer body 1, hot insulating oil can flow into heat dissipation case 3, through set up hot oil tank 2 between heat dissipation case 3 and transformer body 1, the insulating oil of the heat of avoiding transformer body 1 outflow appears the surge impact when directly flowing into heat dissipation case 3, cause the injury to heat dissipation case 3, improve cooling device's life.
Optionally, the cooling device further comprises a cold oil tank 4 for storing the cooled insulating oil, which can flow into the transformer body 1, through the heat dissipation tank 3. Specifically, cold oil tank 4 sets up between heat dissipation case 3 and oil pump 8, and oil pump 8 starts the back, at first extracts refrigerated insulating oil from cold oil tank 4 and gets into transformer body 1, and cold oil tank 4 plays the buffer memory effect, produces the impact effect to heat dissipation case 3 when avoiding oil pump 8 direct action to heat dissipation case 3.
Optionally, the cooling device further includes an oil delivery pipe 6 for communicating the transformer body 1, the hot oil tank 2, the heat dissipation tank 3, the cold oil tank 4 and the oil pump 8, the bottom and the top of the transformer body 1 are respectively provided with a first oil outlet and a first oil inlet 11, and the first oil inlet 11, the hot oil tank 2, the heat dissipation tank 3, the cold oil tank 4, the oil pump 8 and the first oil inlet 11 are sequentially communicated through the oil delivery pipe 6 to form a closed circulation oil path for cooling the transformer body 1 and the insulating oil. Alternatively, the oil delivery pipe 6 is made of a stainless steel material, which has good corrosion resistance, and reduces maintenance and the like of the oil delivery pipe 6 during long-term oil delivery.
The cooling process and the working principle are as follows: the oil pump 8 provides power for the circulation of insulating oil, after the oil pump 8 is started, firstly, cooled insulating oil is extracted from the cold oil tank 4 and sent to the transformer body 1, the internal pressure of the transformer body 1 is increased, meanwhile, the pressure in the cold oil tank 4 is reduced, and as an oil way is closed, the oil pressure is increased and reduced to form a pressure difference, the insulating oil is pushed to flow to the hot oil tank 2 from the transformer body 1 and then flows to the cold oil tank 4 after being cooled by the heat dissipation tank 3, and the insulating oil in the oil way starts to circulate.
Alternatively, as shown in fig. 2, the heat dissipation box 3 includes an S-shaped heat dissipation pipe 31, and the insulating oil flows in the heat dissipation pipe 31, and the S-shaped heat dissipation pipe 31 can increase the heat dissipation area, which is beneficial for dissipating heat of the insulating oil; the radiating pipe 31 is generally composed of a stainless steel pipe, and the insulating oil flows from the radiating pipe 31, and brings heat of the insulating oil to the surface of the radiating pipe 31, thereby radiating to the ambient air. Alternatively, the heat dissipation box 3 includes a heat dissipation case 32 for supporting the heat dissipation pipe 31, and the heat dissipation case 32 is composed of a stainless steel plate, which facilitates heat dissipation of the heat dissipation case 32; further alternatively, the heat dissipating box 3 includes a heat dissipating bracket 33 for supporting the heat dissipating pipe 31, and the heat dissipating bracket 33 is rigidly attached to the outer shell of the heat dissipating box 3, and functions to support the heat dissipating pipe 31 and can further facilitate the heat dissipation of the heat dissipating pipe 31.
Optionally, the heat dissipation tank 3 is provided with a radiator for cooling the insulating oil, the radiator comprises an air-cooled radiator, and/or a water-cooled radiator, and/or an evaporative radiator, and the water-cooled radiator and the evaporative radiator are prior art and will not be described in detail herein.
In this embodiment, as shown in fig. 3, the heat dissipation pipe 31 at least includes two layers of pipes arranged up and down, that is, at least includes an upper layer pipe 311 and a lower layer pipe 312, a middle layer pipe may be further arranged between the upper layer pipe 311 and the lower layer pipe 312, and the more the number of layers of the heat dissipation pipe 31 is arranged, the more the heat dissipation is facilitated; the heat dissipation box 3 comprises an air inlet 36 arranged on the heat dissipation shell 32 and an air outlet arranged on the top of the heat dissipation shell 32, the heat dissipation box 3 further comprises an air blower 35 connected with the air inlet 36, and the air blower 35 is arranged opposite to the air outlet; the air blower 35 sucks air from the air inlet 36 and blows the air into the heat dissipation box 3, and the air blower 35 and the air outlet are correspondingly arranged to form convection, so that the cooling of the heat dissipation pipe 31 is facilitated; optionally, the air inlet 36 is provided with a ventilation top cover 34 which can be opened and closed, when heat dissipation is required, the ventilation top cover 34 is opened, and hot air flows out of the heat dissipation box 3 from the position; when heat dissipation is not required, the ventilation top cover 34 is closed to prevent foreign matters from entering the heat dissipation case 3; specifically, after the cooling device is started, the ventilation top cover 34 is opened and the blower 35 is started, and the air flow is blown from the bottom to the top to air cool the radiating pipe 31. Alternatively, the air inlet 36 is located at the bottom of the side of the heat dissipation box 3, and the air blower 35 is located at the bottom of the heat dissipation box 3 to cool the heat dissipation pipe 31.
Optionally, the heat radiating box 3 further includes heat radiating fins mounted on the heat radiating pipe 31.
In this embodiment, after the cooling device is started, the ventilation top cover 34 is opened and the blower 35 is started, the air flow is blown from bottom to top to cool the heat dissipation pipe 31, the thermal insulation oil enters the upper pipe 311 on the uppermost layer of the heat dissipation box 3 from the second oil inlet 37, and flows out from the lower pipe 312 through the second oil outlet 38 after being cooled by the plurality of layers of middle pipes.
For the feasibility of the method, the present embodiment uses a transformer of type S11-315 for simple calculation analysis (only considering oil change and temperature reduction and heat dissipation of the transformer).
the parameters of the transformer are as follows, no-load power loss (P0) is 0.5kw, load power loss (P1) is 5kw, insulating oil specific heat capacity (C) is 2100J/kg K, the heat dissipation power under rated load of the transformer is 5.5kw (Pa is P0+ P1), and when the transformer is supposed to be operated at 1.41 times (β) of rated load rate, the heating power Pb is as follows:
Pb＝P0+P1*β2＝0.5+5*1.412＝10.5(kw)
the temperature of the injected cold insulating oil (T1) is 30 ℃, the oil temperature of the top layer of the transformer (T0) reaches 85 ℃, and if the oil temperature is ensured not to rise any more, the oil injection speed S (kg/S) is as follows:
S＝Pb/((T0-T1)*C)＝10.5kw/((85℃-30℃)*2100J/kg*K)＝0.0946kg/s
the density of the insulating oil is about 890kg/m3, calculated as about 0.106 liters of insulating oil is injected per second, the lift generally does not exceed 5 meters, the viscosity of the insulating oil is low, and the oil pump 8 with the power of 100w can be realized, so the method has feasibility in engineering.
Example two
The difference between the embodiment and the first embodiment is that the cooling device further comprises an oil delivery pipe 6 for communicating the transformer body 1, the heat dissipation box 3 and the oil pump 8, and a control valve 5 arranged on the oil delivery pipe 6, wherein the control valve 5 is a shut-off valve, and the control valve 5 is used for switching on and off the oil delivery pipe 6 so as to control and adjust the circulation of the insulating oil; the control valve 5 is arranged, so that the transformer body 1 can be selectively cooled, when the transformer body is in a power utilization peak period, the load of the transformer body 1 is large, the control valve 5 is opened to cool the insulating oil, and the cooling effect is enhanced; when the electricity consumption is low at night, the load of the transformer body 1 is small, the control valve 5 can be closed, the energy required by cooling is saved, and the cost is reduced.
In this embodiment, the specific installation layout of the oil-immersed transformer cooling device is as follows:
specifically, the top of transformer body 1 is equipped with first oil inlet 11, installs control valve 5 on the first oil inlet 11, and control valve 5 is in the normally closed state, and is not circulated with external environment, and when needs emergent cooling, defeated oil pipe 6 connects on first oil inlet 11, opens control valve 5, and defeated oil pipe 6 communicates with first oil inlet 11, and when the device was operated, cold insulating oil pours into transformer body 1 into from this mouthful.
First oil-out has been seted up to transformer body 1's bottom, installs control valve 5 on the first oil-out, and control valve 5 is in the normally closed state, and is not circulated with external environment, and when needs emergency cooling, defeated oil pipe 6 connects at first oil-out, opens control valve 5, and hot insulating oil flows from this mouth.
Specifically, the front end of the hot oil tank 2 is communicated with the first oil outlet through an oil delivery pipe 6, the rear end of the hot oil tank 2 is communicated with the heat dissipation tank 3 through the oil delivery pipe 6, and the hot insulating oil flows out of the first oil outlet and then enters the hot oil tank 2 (the front end and the rear end of the hot oil flow direction are respectively the front end and the rear end at the first arriving position, hereinafter, the same applies, the flow direction of the insulating oil in this embodiment is a), so as to temporarily store the hot insulating oil.
Specifically, the heat dissipation tank 3 is provided with a second oil inlet 37 connected to the rear end of the hot oil tank 2, and the thermal insulation oil flowing out of the hot oil tank 2 is injected into the heat dissipation pipe 31 through the second oil inlet; the heat dissipating box 3 is provided with a second oil outlet 38, from which the insulating oil cooled in the heat dissipating pipe 31 flows out.
Specifically, the front end of the cold oil tank 4 is connected with the second oil outlet 38 through an oil delivery pipe 6, the rear end of the cold oil tank is connected with the oil pump 8 through the oil delivery pipe 6, and the cold oil tank 4 plays a role in storing cold insulating oil.
Specifically, the front end of the oil pump 8 is connected with the cold oil tank 4 through an oil conveying pipe 6, the rear end of the oil pump is connected with the first oil inlet 11 through the oil conveying pipe 6, and after the device is started, the oil pump 8 sucks insulating oil from the cold oil tank 4 and pumps the insulating oil to the first oil inlet 11 of the transformer body 1.
Optionally, control valves 5 may be disposed on the oil delivery pipes 6 between the transformer body 1 and the hot oil tank 2, between the hot oil tank 2 and the heat dissipation tank 3, between the heat dissipation tank 3 and the cold oil tank 4, and between the cold oil tank 4 and the transformer body 1, so as to facilitate controllability of circulation among the components.
Alternatively, the heat dissipation box 3 may be an air-cooled radiator, or may be a water-cooled radiator and an evaporative radiator, which are known in the art and will not be described in detail herein.
Optionally, the oil-immersed transformer cooling device further comprises a carrying platform 71 and a wheel 72 rotatably connected with the carrying platform 71, wherein the carrying platform 71 is used for carrying the hot oil tank 2, the heat dissipation tank 3, the cold oil tank 4 and the oil pump 8; optionally, wheels 72 for supporting the carrying platform 71 are arranged on the carrying platform 71, so that the carrying platform 71 can move; when the transformer body 1 needs to be cooled, the carrying platform 71 is pushed to the transformer body 1 to be connected and the cooling is started, and when the cooling is not needed, the control valve 5 is closed, the cooling device is disassembled, and the cooling device is carried back to the designated position, so that the management of equipment is facilitated; wheels 72 are mounted on the carrying platform 71 to facilitate movement of the cooling device.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The oil-immersed transformer cooling device is characterized by comprising a transformer body (1), a heat dissipation box (3) and an oil pump (8), wherein the heat dissipation box (3) and the oil pump are arranged outside the transformer body (1) and are communicated with the transformer body (1); wherein,
the transformer comprises a transformer body (1), wherein insulating oil which flows in a circulating mode and is used for cooling the transformer body (1) is arranged in the transformer body (1);
the heat dissipation box (3) is used for cooling the hot insulating oil from the transformer body (1);
the oil pump (8) provides power for the circulation of the insulating oil between the transformer body (1) and the heat dissipation box (3).
2. Oil filled transformer cooling device according to claim 1, characterized by further comprising an oil delivery pipe (6) for communicating the transformer body (1), the heat dissipation tank (3) and the oil pump (8), and a control valve (5) arranged on the oil delivery pipe (6), wherein the control valve (5) is used for switching the oil delivery pipe (6).
3. Oil filled transformer cooling device according to claim 1, characterized by further comprising a hot oil tank (2) arranged outside the transformer body (1) and communicating with the transformer body (1) and the heat sink tank (3), the hot oil tank (2) being adapted to store hot insulating oil from the transformer body (1), the hot insulating oil being able to flow into the heat sink tank (3).
4. Oil filled transformer cooling device according to claim 1, characterized by further comprising a cold oil tank (4) for storing insulating oil cooled by the heat sink tank (3), the cooled insulating oil being flowable into the transformer body (1).
5. Oil filled transformer cooling device according to any of claims 1-4, characterized in that the heat dissipation tank (3) comprises heat dissipation pipes (31) in the shape of S, the insulating oil flowing inside the heat dissipation pipes (31).
6. Oil filled transformer cooling device according to claim 4, characterized in that the heat sink tank (3) is provided with a heat sink for cooling the insulating oil, the heat sink comprising an air-cooled heat sink, and/or a water-cooled heat sink, and/or an evaporative heat sink.
7. Oil filled transformer cooling device according to claim 5, characterized in that the heat dissipation tank (3) further comprises heat dissipation fins mounted on the heat dissipation pipe (31).
8. Oil filled transformer cooling device according to claim 5, characterized in that the heat dissipation tank (3) comprises a heat dissipation housing (32) for supporting the heat dissipation tubes (31).
9. The oil-filled transformer cooling device according to claim 8, wherein the heat dissipation pipe (31) comprises at least two layers of pipes arranged up and down, the heat dissipation box (3) comprises an air inlet arranged on the heat dissipation housing (32) and an air outlet arranged on the top of the heat dissipation housing (32), the heat dissipation box (3) further comprises an air blower (35) connected to the air inlet, and the air blower (35) is arranged opposite to the air outlet.
10. Oil filled transformer cooling device according to claim 9, characterized in that the air inlet is provided with a ventilation top cover (34) that can be opened and closed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200854.XA CN111223642A (en) | 2020-03-20 | 2020-03-20 | Oil-immersed transformer cooling device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010200854.XA CN111223642A (en) | 2020-03-20 | 2020-03-20 | Oil-immersed transformer cooling device |
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| CN111223642A true CN111223642A (en) | 2020-06-02 |
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| CN202010200854.XA Pending CN111223642A (en) | 2020-03-20 | 2020-03-20 | Oil-immersed transformer cooling device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564289A (en) * | 2020-06-08 | 2020-08-21 | 保定天威保变电气股份有限公司 | Large-scale power transformer oil flow loss distributed strong oil cooling device and use method thereof |
| CN112487343A (en) * | 2020-12-01 | 2021-03-12 | 广东电网有限责任公司佛山供电局 | Method for calculating working efficiency of cooling system of split oil-immersed transformer |
| CN113109381A (en) * | 2021-06-08 | 2021-07-13 | 东莞市巨华检测仪器设备有限公司 | Oil circulating system for vertical Vicat thermal deformation temperature detector |
| CN114678191A (en) * | 2022-04-28 | 2022-06-28 | 浙江富杰电气有限公司 | Oil immersed shunt reactor |
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| CN208111245U (en) * | 2018-05-08 | 2018-11-16 | 江西天昶电气科技有限公司 | A kind of novel oil-immersed transformer |
| CN208400670U (en) * | 2018-07-20 | 2019-01-18 | 广东汇茂电气股份有限公司 | A cooling and cooling device for oil-immersed transformers |
| CN211404240U (en) * | 2020-03-20 | 2020-09-01 | 广东电网有限责任公司 | Oil-immersed transformer cooling device |
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| CN208111245U (en) * | 2018-05-08 | 2018-11-16 | 江西天昶电气科技有限公司 | A kind of novel oil-immersed transformer |
| CN208400670U (en) * | 2018-07-20 | 2019-01-18 | 广东汇茂电气股份有限公司 | A cooling and cooling device for oil-immersed transformers |
| CN211404240U (en) * | 2020-03-20 | 2020-09-01 | 广东电网有限责任公司 | Oil-immersed transformer cooling device |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111564289A (en) * | 2020-06-08 | 2020-08-21 | 保定天威保变电气股份有限公司 | Large-scale power transformer oil flow loss distributed strong oil cooling device and use method thereof |
| CN112487343A (en) * | 2020-12-01 | 2021-03-12 | 广东电网有限责任公司佛山供电局 | Method for calculating working efficiency of cooling system of split oil-immersed transformer |
| CN112487343B (en) * | 2020-12-01 | 2022-04-19 | 广东电网有限责任公司佛山供电局 | Method for calculating working efficiency of cooling system of split oil-immersed transformer |
| CN113109381A (en) * | 2021-06-08 | 2021-07-13 | 东莞市巨华检测仪器设备有限公司 | Oil circulating system for vertical Vicat thermal deformation temperature detector |
| CN114678191A (en) * | 2022-04-28 | 2022-06-28 | 浙江富杰电气有限公司 | Oil immersed shunt reactor |
| CN114678191B (en) * | 2022-04-28 | 2024-05-10 | 浙江富杰电气有限公司 | Oil immersed shunt reactor |
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