CN212644744U - Device for heating by using waste heat of transformer - Google Patents
Device for heating by using waste heat of transformer Download PDFInfo
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- CN212644744U CN212644744U CN202021416422.4U CN202021416422U CN212644744U CN 212644744 U CN212644744 U CN 212644744U CN 202021416422 U CN202021416422 U CN 202021416422U CN 212644744 U CN212644744 U CN 212644744U
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Abstract
The utility model discloses a device for heating by using the waste heat of a transformer, which comprises a transformer, wherein the transformer is connected with a heat exchanger through an oil pipe and forms a closed loop; the heat exchanger is connected with the water tank through a water pipe and forms a closed loop; a temperature sensor a is arranged in the water tank, a temperature sensor b is arranged in the heat exchanger, and the temperature sensor a and the temperature sensor b are both connected with the controller through leads. The utility model relates to a device for heating by using the waste heat of a transformer, which uses an oil pipe to connect the transformer, draws out the waste heat in the transformer and exchanges heat with liquid water in a heat exchanger, on one hand, the waste heat of the transformer is fully utilized, and the utilization rate of energy is provided; meanwhile, the heat emission is reduced, the thermal pollution is avoided, the structure is simple, and the practical value is good.
Description
Technical Field
The utility model belongs to the technical field of waste heat utilization equipment, concretely relates to utilize device of transformer waste heat heating.
Background
The transformer mainly comprises an iron core and a coil, and the transformer generates heat due to loss in operation, so that the temperature of insulating oil in the transformer is continuously increased. Most oil-immersed transformers are A-level insulation, the maximum heat-resistant temperature of the oil-immersed transformers is allowed to be 105 ℃, the winding temperature in the operation of the transformers is 10-15 ℃ higher than the average temperature of upper oil, namely when the upper oil temperature in the operation reaches 85-95 ℃, the winding temperature reaches about 105 ℃, if the oil-immersed transformers are operated at the limit temperature for a long time, the winding insulation is seriously aged, the deterioration of the insulation oil is accelerated, the service life is influenced, therefore, the heat of the transformers is timely and effectively dissipated, the operation temperature in the transformers is controlled within the allowed range, and the important significance is achieved for guaranteeing the safe operation of the transformers.
For oil-immersed transformers, the heat generated by the iron and copper losses is dissipated into the air by the heat sink of the transformer in a self-cooling, air-cooling or water-cooling manner. According to incomplete statistics, energy lost by a 35-220 kV voltage class step-down transformer in an urban power grid in a heat mode accounts for about 1.6% of generated energy, and the loss of part of heat is energy waste and causes air thermal pollution.
The new energy power station is located in remote areas, is cold in winter and needs long heating period, and adopts the wall-hung electric furnace for heating, thereby increasing the power consumption and simultaneously causing the waste of electric quantity.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an utilize device of transformer waste heat heating has solved the extravagant problem of current transformer waste heat dissipation.
The utility model adopts the technical proposal that the device for heating by using the residual heat of the transformer comprises a transformer, wherein the transformer is connected with a heat exchanger through an oil pipe and forms a closed loop; the heat exchanger is connected with the water tank through a water pipe and forms a closed loop;
a temperature sensor a is arranged in the water tank, a temperature sensor b is arranged in the heat exchanger, and the temperature sensor a and the temperature sensor b are both connected with the controller through leads.
The utility model is also characterized in that,
an oil pump is arranged on the oil pipe.
The water pipe is provided with a water pump.
The oil pump and the water pump are both connected with the controller through leads.
The water tank is also provided with a water outlet pipe and a water return pipe.
A single chip microcomputer with the model number of stm32f407 is adopted in the controller;
the model of the temperature sensor a and the model of the temperature sensor b are PT 100.
The heat exchanger comprises a shell filled with liquid water, an oil pipe which is arranged in a continuous S shape is arranged in the shell, and two ends of the oil pipe extend out of the shell to be connected with the transformer; the inner wall of the shell is provided with a temperature sensor b, and the surface of the shell is communicated with a water pipe.
The utility model has the advantages that: the utility model relates to a device for heating by using the waste heat of a transformer, which uses an oil pipe to connect the transformer, draws out the waste heat in the transformer and exchanges heat with liquid water in a heat exchanger, on one hand, the waste heat of the transformer is fully utilized, and the utilization rate of energy is provided; meanwhile, the heat emission is reduced, the thermal pollution is avoided, the structure is simple, and the practical value is good.
Drawings
Fig. 1 is a schematic structural diagram of a device for heating by using waste heat of a transformer according to the present invention;
fig. 2 is a schematic structural diagram of a heat exchanger in a device for heating by using waste heat of a transformer according to the present invention.
In the figure, 1, a transformer, 2, a controller, 3, a water tank, 4, a heat exchanger, 5, an oil pump, 6, a water pump, 7-1, an oil pipe, 7-2, a water pipe, 8, a shell, 10, a water outlet pipe, 11, a water return pipe, 12, a temperature sensor a, 13 and a temperature sensor b are arranged.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model relates to a device for heating by using the residual heat of a transformer, as shown in figure 1, which comprises a transformer 1, wherein the transformer 1 is connected with a heat exchanger 4 through an oil pipe 7-1 to form a closed loop; the heat exchanger 4 is connected with the water tank 3 through a water pipe 7-2 to form a closed loop;
a temperature sensor a12 is arranged in the water tank 3, a temperature sensor b13 is arranged in the heat exchanger 4, and the temperature sensor a12 and the temperature sensor b13 are both connected with the controller 2 through leads and respectively carry out temperature acquisition at different positions.
The oil pipe 7-1 is provided with an oil pump 5, and the oil pump 5 controls the flow of the oil pipe 7-1; a water pump 6 is arranged on the water pipe 7-2, and the water pump 6 is used for controlling the flow of the water pipe 7-2; the oil pump 5 and the water pump 6 are both connected with the controller 2 through leads, and a single chip microcomputer with the model number of stm32f407 is adopted in the controller 2.
The water tank 3 is also provided with a water outlet pipe 10 and a water return pipe 11. The water in the water tank 3 is the hot water flowing out of the heat exchanger 4, the domestic water and the indoor heating are carried out through the water outlet pipe 10, and when the temperature collected by the temperature sensor a12 is low, the flow of the oil pump 5 and the water pump 6 is increased to adjust the temperature by closing the water outlet pipe 10.
Both temperature sensor a12 and temperature sensor b13 are model numbers PT 100.
As shown in fig. 2, the heat exchanger 4 comprises a shell 8 filled with liquid water, an oil pipe 7-1 arranged in a continuous S shape is arranged in the shell 4, two ends of the oil pipe 7-1 extend out of the shell 8 to be connected with the transformer 1, and oil in the transformer 1 is led out through the oil pipe 7-1; the inner wall of the shell 8 is provided with a temperature sensor b13, and the surface of the shell 8 is also communicated with the water pipe 7-2.
The high-temperature oil of the oil pipe 7-1 in the heat exchanger 4 exchanges heat with the liquid low-temperature water in the shell, so that the heat transfer is realized.
The utility model relates to an utilize device of transformer waste heat heating's theory of operation does:
heat exchange medium (insulating oil is used as an oil immersed transformer) is subjected to heat exchange by the heat exchanger 4, liquid water is heated, and then the heated water is used for supplying domestic hot water, heating in winter and air conditioning in summer in a station. The heat exchanger 4 is connected in series on a circulating pipeline of a transformer heat dissipation system, so that water flowing through the heat exchanger 4 is heated by circulating oil of the transformer 1, and hot water after heat exchange is respectively used for heating in winter, air conditioning in summer and supplying hot water for life according to the operation characteristics of a transformer substation. In order to ensure stable heat supply, a water tank 3 with heat storage function is connected in series and used for balancing fluctuation of heat supply capacity caused by load change of the transformer 1.
The utility model relates to an utilize device of transformer waste heat heating's working process as follows:
the oil pump 5 and the water pump 6 are started, at the moment, the heat of the oil in the transformer 1 is conducted to the heat exchanger 4 through the oil pipe 7-1, the heat of the oil pipe 7-1 is exchanged with liquid water in the heat exchanger 4 and is sent to the water tank 3 through the water pipe 7-2, and the heated water in the water tank 3 is sent to domestic water or a heating pipeline and the like through the water outlet pipe 10;
when the temperature fed back to the controller 2 by the temperature sensor b13 is higher, the flow of the water pump 6 is increased, the flow of the oil pump 5 is decreased, the water return pipe 11 and the water outlet pipe 10 are opened simultaneously, the input of heat in the heat exchanger 4 is reduced, the circulation of liquid water in the heat exchanger 4 is accelerated, and the temperature is reduced; when the temperature fed back to the controller 2 by the temperature sensor b13 is lower, the flow of the water pump 6 is reduced, the flow of the oil pump 5 is increased, the water return pipe 11 and the water outlet pipe 10 are closed, the heat input in the heat exchanger 4 is increased, the circulation of the liquid water in the heat exchanger 4 is reduced, and the temperature is lowered.
Examples
Taking an on-load voltage regulation oil-immersed water-cooled transformer of 180MVA installed in a 220kV transformer substation under a certain ground as an example, the maximum heat dissipation load borne by an oil-water heat exchanger of a single transformer is 550kW, and the flow of a water pump on a cooling water side is 98m3The water inlet temperature of the cooling water is 52 ℃, the water outlet temperature is 57.4 ℃, and the cooling water pipe adopts a copper barley alloy pipeline with the nominal diameter of 200 mm. From the above, under normal conditions, the residual heat generated by the operation of the transformer is enough to meet the requirement of the heating heat load of the transformer substation in winter,in order to not influence the normal operation of the transformer and simultaneously improve the heat exchange outlet water temperature as much as possible so as to improve the heat exchange utilization efficiency, the outlet water temperature after heat exchange is set to be 65 ℃, and when the heat exchange outlet water is used for domestic hot water and winter heating after heat exchange, the heat exchange outlet water can be directly used for room heating and domestic hot water.
The utility model relates to a device for heating by using the waste heat of a transformer, which uses an oil pipe to connect the transformer, draws out the waste heat in the transformer 1 and exchanges heat with liquid water in a heat exchanger 4, on one hand, the waste heat of the transformer 1 is fully utilized, and the utilization rate of energy is provided; meanwhile, the heat emission is reduced, the thermal pollution is avoided, the structure is simple, and the practical value is good.
Claims (7)
1. The device for heating by using the waste heat of the transformer is characterized by comprising the transformer (1), wherein the transformer (1) is connected with a heat exchanger (4) through an oil pipe (7-1) to form a closed loop; the heat exchanger (4) is connected with the water tank (3) through a water pipe (7-2) to form a closed loop;
the water tank (3) is internally provided with a temperature sensor a (12), the heat exchanger (4) is internally provided with a temperature sensor b (13), and the temperature sensor a (12) and the temperature sensor b (13) are both connected with the controller (2) through leads.
2. The device for heating by using the residual heat of the transformer as claimed in claim 1, wherein an oil pump (5) is disposed on the oil pipe (7-1).
3. The device for heating by using the residual heat of the transformer as claimed in claim 2, wherein a water pump (6) is arranged on the water pipe (7-2).
4. The device for heating by using the residual heat of the transformer as claimed in claim 2, wherein the oil pump (5) and the water pump (6) are connected with the controller (2) through wires.
5. The device for heating by using the residual heat of the transformer as claimed in claim 1, wherein the water tank (3) is further provided with a water outlet pipe (10) and a water return pipe (11).
6. The device for heating by using the waste heat of the transformer as claimed in claim 1, wherein a single chip microcomputer with the model number stm32f407 is adopted in the controller (2);
the models of the temperature sensor a (12) and the temperature sensor b (13) are PT 100.
7. The device for heating by using the residual heat of the transformer according to any one of claims 1 or 6, wherein the heat exchanger (4) comprises a shell (8) filled with liquid water, oil pipes (7-1) arranged in a continuous S shape are arranged in the shell (8), and two ends of each oil pipe (7-1) extend out of the shell (8) and are connected with the transformer (1);
the inner wall of the shell (8) is provided with a temperature sensor b (13), and the surface of the shell (8) is communicated with the water pipe (7-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021416422.4U CN212644744U (en) | 2020-07-17 | 2020-07-17 | Device for heating by using waste heat of transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021416422.4U CN212644744U (en) | 2020-07-17 | 2020-07-17 | Device for heating by using waste heat of transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212644744U true CN212644744U (en) | 2021-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021416422.4U Expired - Fee Related CN212644744U (en) | 2020-07-17 | 2020-07-17 | Device for heating by using waste heat of transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212644744U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593628A (en) * | 2022-03-25 | 2022-06-07 | 嘉沁农业科技有限公司 | Domestic fungus mill waste steam recovery system |
| CN115654770A (en) * | 2022-10-25 | 2023-01-31 | 国网黑龙江省电力有限公司电力科学研究院 | Temperature regulation and control system for supplying heat by using waste heat of transformer |
-
2020
- 2020-07-17 CN CN202021416422.4U patent/CN212644744U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114593628A (en) * | 2022-03-25 | 2022-06-07 | 嘉沁农业科技有限公司 | Domestic fungus mill waste steam recovery system |
| CN115654770A (en) * | 2022-10-25 | 2023-01-31 | 国网黑龙江省电力有限公司电力科学研究院 | Temperature regulation and control system for supplying heat by using waste heat of transformer |
| CN115654770B (en) * | 2022-10-25 | 2023-09-08 | 国网黑龙江省电力有限公司电力科学研究院 | Temperature regulation and control system for heating by utilizing waste heat of transformer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210302 Termination date: 20210717 |