CN213273904U - Melting heat storage device and system for phase-change heat storage medium - Google Patents
Melting heat storage device and system for phase-change heat storage medium Download PDFInfo
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- CN213273904U CN213273904U CN202021196529.2U CN202021196529U CN213273904U CN 213273904 U CN213273904 U CN 213273904U CN 202021196529 U CN202021196529 U CN 202021196529U CN 213273904 U CN213273904 U CN 213273904U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model relates to a melting and heat storage device and a system for phase-change heat storage media, wherein the melting and heat storage device for the phase-change heat storage media comprises a heat preservation container; the heat-insulating container is provided with at least one inlet for solid phase-change heat storage medium to enter and at least one outlet for liquid phase-change heat storage medium to flow out; at least one group of heating pipe groups for circulating combustion gas is arranged in the heat-insulating container; the exhaust port of the heating pipe set extends out of the heat preservation container; a stirrer is arranged on the heat-insulating container; the driving device of the stirrer is fixedly arranged at the top of the heat-preservation container, and a stirring shaft of the stirrer extends into the heat-preservation container; the heating pipe group is arranged between the middle part and the bottom of the heat preservation container; the heat-insulating container is provided with at least one inlet for liquid phase-change heat storage medium to flow into. The system mainly utilizes the heat exchanger and the liquid phase-change heat storage medium to melt the solid phase-change heat storage medium, thereby greatly reducing the production cost.
Description
Technical Field
The utility model relates to a phase transition heat-retaining equipment, in particular to are used for phase transition heat-retaining medium to melt heat-retaining device and system.
Background
Energy storage in the solar photo-thermal power generation system is a key and indispensable important link, and most energy storage media are phase-change heat storage media, such as fused salt. The energy storage function is realized by heating and warming the heat storage medium.
The phase change heat storage medium melting furnace is the most common heat storage device in a solar photo-thermal power generation system, and the commonly adopted phase change medium is molten salt. The phase change medium melting furnace generally heats the phase change medium by using combustion gas flowing through a heating pipe. In order to ensure the salt dissolving effect, a large number of heating pipes are often arranged in the furnace body, and each heating pipe is provided with a heating nozzle. Therefore, the whole salt melting process needs to consume a large amount of fuel gas, the energy consumption is high, and the production cost is high. And the emission of fuel gas also has certain environmental protection problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a first purpose provides a low energy consumption is used for phase transition heat-retaining medium to melt heat-retaining device.
Realize the utility model discloses the technical scheme of first purpose is: the utility model relates to a medium phase-change heat storage medium melting heat storage device, which comprises a heat preservation container; the heat-insulating container is provided with at least one inlet for solid phase-change heat storage medium to enter and at least one outlet for liquid phase-change heat storage medium to flow out; at least one group of heating pipe groups for circulating combustion gas is arranged in the heat-insulating container; the exhaust port of the heating pipe set extends out of the heat preservation container; a stirrer is arranged on the heat-insulating container; the driving device of the stirrer is fixedly arranged at the top of the heat-preservation container, and a stirring shaft of the stirrer extends into the heat-preservation container; the heating pipe group is arranged between the middle part and the bottom of the heat preservation container; the heat-insulating container is provided with at least one inlet for liquid phase-change heat storage medium to flow into.
A jet pipe for jetting liquid phase-change heat storage medium is distributed at the top inside the heat preservation container; the liquid inlet of the jet pipe is communicated with the inlet; the jet pipe is provided with a jet port.
The jet pipes are distributed along the inner wall of the heat-insulating container and are annular.
The bottom of the heat-insulating container is also provided with an electric heating device for heating the phase-change heat storage medium. The electric heating device is a common component in a phase-change heat storage medium melting apparatus, and is not described in detail here.
The heating pipe set sequentially comprises a heating cavity, a heating pipe and a smoke exhaust pipe which are connected into a whole along the flowing direction of combustion gas; the heating cavity penetrates through the heat-insulating container, and the smoke exhaust pipe penetrates out of the heat-insulating container; and a heating nozzle is fixedly arranged on the heat-insulating container and is opposite to the heating cavity.
Wherein the phase-change heat storage medium is mainly inorganic salt, such as NaNO3、KNO3And mixtures thereof.
The bottom of the heat-insulating container is a settling zone, and a sewage outlet for discharging the sediment in the settling zone is also arranged on the heat-insulating container. The cleanness in the heat preservation container can be effectively ensured through the sewage draining outlet.
As an optimized design, the sewage draining outlet is arranged on the side wall of the heat-insulating container; the sewage outlet is connected with one end of a sewage siphon pipe, and the other end of the sewage siphon pipe is arranged in the sedimentation area.
A second object of the present invention is to provide a system for melting solid phase change heat storage medium with low energy consumption by using solar energy and liquid phase change heat storage medium.
Realize the utility model discloses the technical scheme of second purpose is: the utility model discloses a middle system, have above-mentioned phase change heat-retaining medium melt heat-retaining device, be used for giving the heat transfer device, low temperature molten salt jar and the buffer tank of the liquid phase change heat-retaining medium intensification; the heat-insulating container for melting the phase-change heat storage medium and inserting the heat storage device is provided with two inlets for liquid phase-change heat storage medium to flow in, namely a first inlet, a second inlet and an overflow port for liquid phase-change heat storage medium to flow out;
the overflow port is communicated with the inlet of the buffer tank, and the outlet of the buffer tank is communicated with the liquid inlet of the heat exchange device; a liquid outlet of the heat exchange device is respectively communicated with an inlet and a first inlet of the low-temperature molten salt tank through pipelines, and valves are arranged on the pipelines; the outlet of the low-temperature molten salt tank is communicated with the second inlet through a pipeline, and a high-pressure pump is arranged on the pipeline. And the liquid phase-change heat storage medium in the buffer tank is reserved from an outlet of the buffer tank under the action of a pump carried by the buffer tank.
Meanwhile, the device also comprises a conveying belt used for conveying the solid phase-change heat storage medium to the inlet of the heat-preservation container.
The heat exchange device is a solar oil-smoke heat exchanger. Since the solar oil-smoke heat exchanger is the prior art, it is not specifically described herein.
The utility model discloses has positive effect: (1) the utility model discloses in be used for phase transition heat-retaining medium melting device to melt the processing through the solid-state phase transition heat-retaining medium of the heating group that lets in liquid phase transition heat-retaining medium, agitator and be located the heat preservation container bottom, only need can realize melting solid-state phase transition heat-retaining medium through one or a small number heating group, save manufacturing cost greatly.
(2) Because after solid-state phase change heat-retaining medium added the heat preservation container, can float on liquid phase change heat-retaining medium's top layer, consequently the utility model discloses a jet pipe can let liquid phase change heat-retaining medium fully mix with the solid-state phase change heat-retaining medium contact on top layer, improves and melts efficiency and melting effect.
(3) The utility model discloses well efflux pipe adopts the annular design, has further promoted the injection scope to improve mixed effect.
(4) The utility model discloses an electric heater unit can further improve and melt efficiency and melting effect, plays supplementary melting effect.
(6) The utility model discloses well phase change heat-retaining medium system of melting carries out liquid phase change heat-retaining medium through low temperature molten salt jar earlier and prestores, can realize entire system's operation after waiting to reach a certain amount.
(7) The utility model discloses well phase transition heat-retaining medium melting system heaies up participating in the liquid phase transition heat-retaining medium of melting through heat exchanger (especially solar energy oil-cigarette heat exchanger) to recycle satisfies the melting requirement.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
FIG. 1 is a schematic diagram of a molten salinated salt plant of the present invention;
FIG. 2 is a schematic structural diagram of the salt neutralization system of the present invention;
fig. 3 is a schematic structural view of the middle jet pipe of the present invention;
fig. 4 is a schematic structural view of the middle heating pipe set of the present invention;
fig. 5 is another schematic structural diagram of the middle heating pipe set of the present invention.
Detailed Description
Referring to fig. 1, the heat storage device for melting phase change heat storage medium of the present invention includes a heat insulation container 1; the heat-insulating container 1 is provided with an inlet 11 for solid phase-change heat storage medium to enter and an overflow port 14 for liquid phase-change heat storage medium to flow out; a group of heating pipe groups 2 for circulating combustion gas is arranged in the heat-insulating container 1; the exhaust port of the heating pipe set 2 extends out of the heat preservation container 1; a stirrer 3 is arranged on the heat preservation container 1; the driving device 31 of the stirrer 3 is fixedly arranged at the top of the heat preservation container 1, and the stirring shaft 32 of the stirrer 3 extends into the heat preservation container 1; the heating pipe group 2 is arranged at the bottom of the heat preservation container 1; the heat preservation container 1 is provided with two inlets for liquid phase change heat storage media to flow into, namely a first inlet 12 and a second inlet 13.
Referring to fig. 1 and 3, a jet pipe 4 for jetting liquid phase-change heat storage medium is arranged at the top inside the heat preservation container 1; the liquid inlet of the jet pipe 4 is communicated with the inlet 13; the jet pipe 4 is provided with a jet port 41.
The jet pipes 4 are distributed along the inner wall of the heat preservation container 1 and are annular.
The bottom of the heat-insulating container 1 is also provided with an electric heating device 5 for heating the phase-change heat storage medium.
Referring to fig. 1, the bottom of the heat-insulating container 1 is a settling zone, and a sewage outlet 15 for discharging the sediment in the settling zone is also arranged on the side wall of the heat-insulating container 1; the sewage discharge port 15 is connected with one end of a sewage discharge siphon pipe 16, and the other end of the sewage discharge siphon pipe 16 is arranged in the sedimentation zone.
Referring to fig. 4, the heated tube set 2 sequentially includes a heating chamber 21, a heating tube 22 and a smoke exhaust tube 23 connected integrally along the flow direction of the combustion gas; the heating cavity 21 penetrates through the heat-insulating container 1, and the smoke exhaust pipe 23 penetrates out of the heat-insulating container 1; and a heating nozzle is fixedly arranged on the heat-insulating container 1 and is opposite to the heating cavity 21. Of course, the heating tube 22 may be composed of a plurality of pieces, see fig. 5.
As shown in fig. 2, the middle system of the present invention comprises the above-mentioned heat exchange device 6 for melting the phase-change heat storage medium, heating the liquid phase-change heat storage medium, the low-temperature molten salt tank 7 and the buffer tank 8; the buffer tank 8 is provided with a pump for pumping the liquid phase-change heat storage medium in the buffer tank 8.
The overflow port 14 is communicated with the inlet of the buffer tank 8; the outlet of the buffer tank 8 is communicated with the liquid inlet of the heat exchange device 6; a liquid outlet of the heat exchange device 6 is respectively communicated with an inlet of the low-temperature molten salt tank 7 and a first inlet 12 through pipelines, and valves are arranged on the pipelines; the outlet of the low-temperature molten salt tank 7 is communicated with the second inlet 13 through a pipeline, and a high-pressure pump is arranged on the pipeline.
And a conveying belt 9 for conveying the solid phase-change heat storage medium to an inlet 11 of the heat preservation container 1.
The heat exchange device 6 is a solar oil-smoke heat exchanger.
The utility model discloses well phase transition heat-retaining medium melting system's melting working process as follows:
firstly, a solid phase-change heat storage medium is thrown into the heat preservation container 1 from an inlet 11 through a conveying belt 9; then, the solid phase-change heat storage medium is heated and melted through the heating nozzle and the heating pipe group 2, and an electric heating device 5 can be used if necessary; then, the melted liquid phase-change heat storage medium is pumped out through the buffer tank 8 and is injected into the solar oil-smoke heat exchanger, the liquid phase-change heat storage medium is heated by using a solar mirror field, then the heated liquid phase-change heat storage medium is introduced into the low-temperature molten salt tank 7 to be stored, meanwhile, the low-temperature molten salt tank 7 injects the liquid phase-change heat storage medium into the jet pipe 4 through the high-pressure pump, and the jet pipe 4 injects the liquid phase-change heat storage medium into the heat preservation container 1 to be effectively mixed.
When the temperature in the heat-insulating container 1 and the liquid phase-change heat storage medium reach a certain amount, closing a valve between the heat exchange device 6 and an inlet of the low-temperature molten salt tank 7, and opening a valve between the heat exchange device 6 and the first inlet 12; at this time, the liquid phase-change heat storage medium from the heat exchange 6 is directly introduced into the jet pipe 4 to form circulation.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The melting heat storage device for the phase-change heat storage medium comprises a heat-insulating container (1); the heat preservation container (1) is provided with at least one inlet (11) for solid phase-change heat storage medium to enter and at least one outlet for liquid phase-change heat storage medium to flow out; at least one group of heating pipe groups (2) for circulating combustion gas is arranged in the heat-insulating container (1); the exhaust port of the heating pipe set (2) extends out of the heat preservation container (1); the method is characterized in that: a stirrer (3) is arranged on the heat-insulating container (1); a driving device (31) of the stirrer (3) is fixedly arranged at the top of the heat-insulating container (1), and a stirring shaft (32) of the stirrer (3) extends into the heat-insulating container (1); the heating pipe set (2) is arranged between the middle part and the bottom of the heat-insulating container (1); the heat preservation container (1) is provided with at least one inlet for liquid phase-change heat storage medium to flow into.
2. The melting heat storage device for phase-change heat storage media of claim 1, wherein: a jet pipe (4) for jetting liquid phase-change heat storage medium is distributed at the top inside the heat preservation container (1); the liquid inlet of the jet pipe (4) is communicated with the inlet (13); the jet pipe (4) is provided with a jet port (41).
3. The melting heat storage device for phase-change heat storage media of claim 2, wherein: the jet pipe (4) is distributed along the inner wall of the heat preservation container (1) and is annular.
4. The melting heat storage device for phase-change heat storage media according to claim 1, 2 or 3, characterized in that: the bottom of the heat-insulating container (1) is also provided with an electric heating device (5) for heating the phase-change heat storage medium.
5. The melting heat storage device for phase-change heat storage media of claim 1, wherein: the bottom of the heat-insulating container (1) is a settling zone, and a sewage outlet (15) for discharging the sediment in the settling zone is also arranged on the heat-insulating container (1).
6. The melting heat storage device for phase-change heat storage media of claim 5, wherein: the sewage draining outlet (15) is arranged on the side wall of the heat-insulating container (1); the sewage outlet (15) is connected with one end of a sewage siphon (16), and the other end of the sewage siphon (16) is arranged in the sedimentation zone.
7. A system, characterized by: the phase-change heat storage medium melting heat storage device as claimed in claim 1 or 2 or 3 or 5 or 6, the heat exchange device (6) for heating the liquid phase-change heat storage medium, the low-temperature molten salt tank (7) and the buffer tank (8); the heat-insulating container (1) for the phase-change heat storage medium melting heat storage device is provided with two inlets for liquid phase-change heat storage medium to flow in, namely a first inlet (12) and a second inlet (13), and an overflow port (14) for liquid phase-change heat storage medium to flow out;
the overflow port (14) is communicated with the inlet of the buffer tank (8), and the outlet of the buffer tank (8) is communicated with the liquid inlet of the heat exchange device (6); a liquid outlet of the heat exchange device (6) is respectively communicated with an inlet of the low-temperature molten salt tank (7) and a first inlet (12) through pipelines, and valves are arranged on the pipelines; the outlet of the low-temperature molten salt tank (7) is communicated with the second inlet (13) through a pipeline, and a high-pressure pump is arranged on the pipeline.
8. The system of claim 7, wherein: the bottom of the heat-insulating container (1) is also provided with an electric heating device (5) for heating the phase-change heat storage medium.
9. The system of claim 7, wherein: the heat-preserving container also comprises a conveying belt (9) used for conveying the solid phase-change heat storage medium to an inlet (11) of the heat-preserving container (1).
10. The system of claim 7, wherein: the heat exchange device (6) is a solar oil-smoke heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021196529.2U CN213273904U (en) | 2020-06-24 | 2020-06-24 | Melting heat storage device and system for phase-change heat storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021196529.2U CN213273904U (en) | 2020-06-24 | 2020-06-24 | Melting heat storage device and system for phase-change heat storage medium |
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| Publication Number | Publication Date |
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| CN213273904U true CN213273904U (en) | 2021-05-25 |
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| CN202021196529.2U Active CN213273904U (en) | 2020-06-24 | 2020-06-24 | Melting heat storage device and system for phase-change heat storage medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735334A (en) * | 2020-06-24 | 2020-10-02 | 江苏联储能源科技有限公司 | Phase-change heat storage medium melting device and melting system |
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- 2020-06-24 CN CN202021196529.2U patent/CN213273904U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111735334A (en) * | 2020-06-24 | 2020-10-02 | 江苏联储能源科技有限公司 | Phase-change heat storage medium melting device and melting system |
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