CN214747432U - Novel single-tank immersed heat exchange fused salt energy storage heat supply device - Google Patents
Novel single-tank immersed heat exchange fused salt energy storage heat supply device Download PDFInfo
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- CN214747432U CN214747432U CN202022915757.7U CN202022915757U CN214747432U CN 214747432 U CN214747432 U CN 214747432U CN 202022915757 U CN202022915757 U CN 202022915757U CN 214747432 U CN214747432 U CN 214747432U
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Abstract
The utility model discloses a single-tank immersed heat exchange fused salt energy storage and heat supply device, which comprises a fused salt heat storage tank, wherein a fused salt electric heater is arranged at the top of the fused salt heat storage tank and used for storing valley electricity; the bottom of the molten salt electric heater is positioned in the heating tank; a first heat exchanger is arranged in the molten salt heat storage tank, the first heat exchanger is an immersed floating coil molten salt-heat conducting oil heat exchanger, an inlet reserved flange of the first heat exchanger is connected with a heat conducting oil circulating pump, and two outlets of the first heat exchanger are inserted into the heat conducting oil heat exchange tank; a second heat exchanger is arranged in the heat conduction oil heat exchange tank, the second heat exchanger is an immersed floating coil heat conduction oil-heating water heat exchanger, and the second heat exchanger is immersed in the heat conduction oil; the utility model has the advantages that: not only avoids irreversible loss caused by large-temperature-difference heat exchange, but also avoids the manufacturing problem of a large-temperature-difference heat exchanger, and the heat exchange system is more stable.
Description
Technical Field
The utility model relates to a heating device, specifically speaking are novel single jar submergence formula heat transfer fused salt energy storage heating device belongs to energy storage heating device field.
Background
The fused salt heat storage and energy storage is derived from a solar photo-thermal power generation technology. The molten salt heat storage technology is mainly used for domestic heating, the process flow of the technology basically adopts a primary molten salt application mode, and the heating energy storage and heat exchange structure of the molten salt is very complex; generally, a high-temperature molten salt tank, a low-temperature molten salt tank, a molten salt pump circulation, pipeline heat preservation and heat tracing, molten salt/steam high-temperature heat exchange and steam/water low-temperature heat exchange are adopted, and then hot water can be provided for a heating pipeline. Whole fused salt circulation system must carry out the heat tracing, in case the heat tracing system stops, when pipeline valve temperature is less than the fused salt freezing point, fused salt liquid can solidify promptly, cause whole circulation system to scrap, produces huge loss, hardly controls high temperature fused salt liquid cycle simultaneously, requires fairly high and have shortcomings such as potential safety hazard to equipment, pipeline, material.
Although the invention patent with the patent number '201811543523.5' named as 'single-tank immersed heat exchange molten salt energy storage and heat supply device' can easily control the liquid circulation of high-temperature molten salt and has high safety, in actual use, the invention patent has some places needing improvement and perfection on the technical problems of avoiding irreversible loss caused by large-temperature-difference heat exchange, avoiding the manufacturing difficulty of a large-temperature-difference heat exchanger and the like.
Disclosure of Invention
In order to solve the problem, the utility model designs a novel single jar submergence formula heat transfer fused salt energy storage heating device, the irreversible loss that has not only avoided big difference in temperature heat transfer to cause has avoided the manufacturing difficult problem of big difference in temperature heat exchanger moreover, and heat transfer system is more stable.
The technical scheme of the utility model is that:
a novel single-tank immersed heat exchange fused salt energy storage and heat supply device comprises a fused salt heat storage tank, wherein a fused salt electric heater is mounted at the top of the fused salt heat storage tank and used for valley electricity heat storage; the bottom of the molten salt electric heater is positioned in the heating tank; a first heat exchanger is arranged in the molten salt heat storage tank, the first heat exchanger is an immersed floating coil molten salt-heat conducting oil heat exchanger, is made of high-temperature-resistant and corrosion-resistant stainless steel, is designed in a floating coil mode and is immersed in a molten salt medium all the time, a flange is reserved at an inlet of the first heat exchanger and is connected with a heat conducting oil circulating pump, and two outlets of the first heat exchanger are inserted into the heat conducting oil heat exchange tank; a second heat exchanger is arranged in the heat conduction oil heat exchange tank, the second heat exchanger is an immersed floating coil heat conduction oil-heating water heat exchanger, and the second heat exchanger is immersed in the heat conduction oil; the heat conducting oil circulating pump is controlled by a control system to be opened, closed or output in a frequency conversion mode according to the outlet temperature of the immersed floating coil heat conducting oil/heating water heat exchanger, and in order to prevent overheating and coking of heat conducting oil, the heat conducting oil circulating pump is provided with the minimum circulating flow rate, so that the heat conducting oil is prevented from being overheated, and coking and deteriorating.
In addition, a touch screen is arranged outside the molten salt heat storage tank body and used for displaying the temperature of molten salt in the molten salt heat storage tank and heat conduction oil in the heat conduction oil heat exchange tank and displaying the pressure values in the molten salt heat storage tank and the heat conduction oil heat exchange tank; the touch screen is connected with the controller, and the automatic valves on the molten salt electric heater, the filling port/vent hole of the molten salt heat storage tank, the molten salt discharge port and the filling port/vent hole of the heat transfer oil heat exchange tank are controlled by the controller.
Further, the molten salt heat storage tank is made of high-temperature-resistant and corrosion-resistant stainless steel, a filling port/vent hole is formed in the right side of the top of the molten salt heat storage tank, and a molten salt discharge port is formed in the lower portion of the molten salt heat storage tank; temperature sensor is installed respectively to the upper, middle and lower position of fused salt heat storage tank for the fused salt temperature in the monitoring jar, and temperature sensor passes through the controller and links to each other with fused salt electric heater control, and real-time temperature is gathered by the controller and is shown.
Furthermore, the molten salt electric heater adopts a flange type cluster electric heater, so that the installation and maintenance are convenient, the power can be customized according to the requirement, the electric heating can be started, closed or output regulated by a control system instruction according to the actual requirement, and one or two molten salt electric heaters can be started by the control system instruction according to the actual requirement;
furthermore, two cylindrical heating tank openings are formed in the bottom of the molten salt heat storage tank, the heating tank is welded to the heating tank openings, a tank body of the heating tank is located inside the heat conduction oil heat exchange tank and is immersed into the heat conduction oil, and a molten salt solution is filled in the heating tank to secondarily increase heat storage of the heat conduction oil, so that irreversible loss caused by large-temperature-difference heat exchange is avoided; the heating tank is of a composite material structure and sequentially comprises a high-temperature-resistant corrosion-resistant corrugated stainless steel layer, a heat-conducting silica gel layer and a high-temperature-resistant corrosion-resistant stainless steel outer layer from inside to outside, so that better heat conduction can be realized; a plurality of corrugated gaps are equidistantly arranged on the surface of the high-temperature-resistant corrosion-resistant corrugated stainless steel layer, and the gaps are filled with graphite for heat conduction; the outer surface of the high-temperature-resistant corrosion-resistant corrugated stainless steel layer is wrapped with a heat-conducting silica gel layer for enhancing heat conduction; the outer surface of the heat-conducting silica gel layer is wrapped with a high-temperature-resistant corrosion-resistant stainless steel outer layer;
furthermore, the heat transfer oil heat exchange tank is arranged at the lower part of the molten salt heat storage tank, and the outside of the two tanks and the space between the two tanks are insulated by high-temperature resistant heat insulation materials.
Furthermore, a heat conduction oil pump interface and an oil discharge port are reserved at the bottom of the heat conduction oil heat exchange tank, and a filling port/vent hole is formed at the top of the heat conduction oil heat exchange tank; the bottom of the heat transfer oil heat exchange tank is designed into a left inclined plane and a right inclined plane, so that heat transfer oil can conveniently flow into a heat transfer oil pump interface; temperature sensors are respectively arranged at the upper, middle and lower positions of the fused salt heat storage tank, the fused salt temperature in the tank is monitored, and the real-time temperature is acquired and displayed by the controller.
Further, automatic valves are arranged on the filling port/vent hole of the molten salt heat storage tank, the molten salt discharge port and the filling port/vent hole of the heat transfer oil heat exchange tank, and the opening and closing of the automatic valves are controlled by a controller;
furthermore, the inlet end of the second heat exchanger is connected with heating backwater, and the outlet end of the second heat exchanger is connected with heating water supply.
Further, fused salt heat storage tank is equipped with the structural layer, be equipped with the heat preservation outside the structural layer.
Furthermore, the heat-conducting oil circulating pump is externally arranged outside the tank, so that the maintenance is convenient.
The utility model discloses with fused salt heating jar overhead, the immersion of float coil tube heat exchanger is in the fused salt jar, and the conduction oil gets into the heat of trading from the fused salt heat-retaining medium of float coil tube heat exchanger through the conduction oil pump, and heating water and conduction oil carry out the heat transfer, directly regulate and control heating leaving water temperature through the temperature of control conduction oil.
The utility model discloses heating device adopts millet electrical heating fused salt heat accumulation and can use on life heating system.
The utility model has the advantages that:
(1) according to the second law of thermodynamics, the heat exchange process with unmatched energy levels has large irreversible loss, which causes a large amount of available energy to be wasted. The utility model avoids irreversible loss caused by large temperature difference heat exchange through the two-stage heat exchange of fused salt/heat conducting oil and heat conducting oil/water, avoids the manufacturing problem of a large temperature difference heat exchanger, and has a more stable heat exchange system;
(2) the heating of the heat conduction oil basically has no steam partial pressure, and the heating of the heating water also does not need to generate steam, so that the whole system has no high-pressure process and is safer;
(3) the heat conducting oil can not be condensed at normal temperature, and the molten salt and the heat conducting oil do not need to be discharged, so that the problem of freezing and blocking of a circulating system is not worried about;
(4) the floating coil type heat exchanger is used for heat exchange and is immersed in a heat exchange medium, so that the adaptability of the heat exchanger to temperature change is improved while the high-efficiency heat exchange efficiency is ensured;
(5) the whole set of equipment can be integrated into a single tank form, and the modular production can reduce the pipeline loss, the manufacturing and installation cost and the basic investment cost; the system can be used in parallel in a modularized way, and is simple and convenient to replace and maintain.
The present invention will be further explained with reference to the drawings and examples.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
1 fused salt heat storage tank, 11 structural layers, 12 heat preservation layers, 13 fused salt heat storage tank fill opening/air vent, 14 fused salt discharge opening, 15 conduction oil heat transfer tank fill opening/air vent, 16 heating tanks, 2 touch-control screens, 3 first fused salt electric heater, 4 second fused salt electric heater, 5 first heat exchangers, 6 conduction oil circulating pumps, 7 conduction oil heat transfer tanks, 8 conduction oil pump interfaces and oil discharge ports, 9 second heat exchangers.
Detailed Description
The following description of the preferred embodiments of the present invention is provided for the purpose of illustration and description, and is not intended to limit the invention.
Example 1
As shown in fig. 1, a novel single-tank immersed heat exchange fused salt energy storage and heat supply device comprises a fused salt heat storage tank 1, wherein the fused salt heat storage tank 1 is made of high-temperature-resistant and corrosion-resistant stainless steel, a fused salt heat storage tank filling port/vent hole 13 is formed in the top of the fused salt heat storage tank, a fused salt discharge port 14 is formed in the lower part of the fused salt heat storage tank, and a first fused salt electric heater 3 and a second fused salt heat storage tank 4 are mounted on the top of the fused salt heat storage tank and used for valley electricity heat storage; temperature sensor is installed respectively to the last well lower position of fused salt heat storage jar 1 for fused salt temperature in the monitoring jar, temperature sensor passes through the controller and links to each other with the control of first fused salt electric heater 3 and second fused salt heat storage jar 4, and real-time temperature is gathered by the controller, and is shown by touch-control screen 2. The touch screen 2 is arranged outside the tank body of the molten salt heat storage tank 1 and used for displaying the temperature of molten salt in the molten salt heat storage tank and heat transfer oil in the heat transfer oil tank and displaying the pressure values in the molten salt heat storage tank and the heat transfer oil tank; the touch screen 2 is connected with a controller, and the controller is used for controlling the molten salt electric heater, controlling the filling port/vent hole 13 of the molten salt heat storage tank, controlling the molten salt discharge port 14 and controlling the automatic valves on the filling port/vent hole 15 of the heat transfer oil heat exchange tank;
first fused salt electric heater 3 is unanimous with 4 structures of second fused salt heat storage tank, adopts flange formula electric heater tied in a bundle, and the installation of being convenient for is maintained, can customize power as required, and electric heating can be opened, close or adjust the output by control system instruction according to actual demand. The first molten salt electric heater 3 and the second molten salt heat storage tank 4 can be opened by instructions of a control system according to actual demands.
Further, two cylindrical heating tank openings are formed in the bottom of the molten salt heat storage tank 1, the heating tank 16 is welded to each heating tank opening, a tank body of the heating tank 16 is located inside the heat conduction oil heat exchange tank 7 and is immersed in the heat conduction oil, and a molten salt solution is filled in the heating tank 16 and is used for increasing heat storage for the heat conduction oil secondarily, so that irreversible loss caused by large-temperature-difference heat exchange is avoided; the heating tank 16 is of a composite material structure and sequentially comprises a high-temperature-resistant corrosion-resistant corrugated stainless steel layer, a heat-conducting silica gel layer and a high-temperature-resistant corrosion-resistant stainless steel outer layer from inside to outside, so that better heat conduction can be realized; a plurality of corrugated gaps are equidistantly arranged on the surface of the high-temperature-resistant corrosion-resistant corrugated stainless steel layer, and the gaps are filled with graphite for heat conduction; the outer surface of the high-temperature-resistant corrosion-resistant corrugated stainless steel layer is wrapped with a heat-conducting silica gel layer for enhancing heat conduction; the outer surface of the heat-conducting silica gel layer is wrapped with a high-temperature-resistant corrosion-resistant stainless steel outer layer;
the molten salt heat storage tank 1 is internally provided with a first heat exchanger 5, the first heat exchanger 5 is an immersed floating coil fused salt-heat conducting oil heat exchanger, is made of high-temperature-resistant and corrosion-resistant stainless steel, adopts a floating coil type design, and is immersed in a molten salt medium all the time, an inlet reserved flange of the first heat exchanger is connected with a heat conducting oil circulating pump 6, and an outlet of the first heat exchanger is inserted into a heat conducting oil heat exchange tank 7.
The heat transfer oil heat exchange tank 7 is arranged on the lower portion of the molten salt heat storage tank 1, and heat insulation is made between the outer portions of the two tanks and between the two tanks by high-temperature-resistant heat insulation materials. A heat-conducting oil pump connector and an oil discharging port 8 are reserved at the bottom of the heat-conducting oil heat exchange tank 7, and a filling port/vent hole 10 is formed at the top. Temperature sensors are respectively arranged at the upper, middle and lower positions of the fused salt heat storage tank, the fused salt temperature in the tank is monitored, and the real-time temperature is acquired and displayed by the controller.
A second heat exchanger 9 is arranged in the heat conduction oil heat exchange tank 7, the second heat exchanger 9 is an immersed floating coil heat conduction oil-heating water heat exchanger, and the second heat exchanger 9 is immersed in the heat conduction oil; and the heat conducting oil circulating pump is controlled by a control system to open and close or regulate flow output in a frequency conversion mode according to the outlet temperature of the immersed floating coil heat conducting oil/heating water heat exchanger.
The inlet end of the second heat exchanger 9 is connected with heating backwater, and the outlet end is connected with heating water supply.
The molten salt heat storage tank 1 is provided with a structural layer 11, and a heat preservation layer 12 is arranged outside the structural layer 11.
The heat-conducting oil circulating pump 6 is externally arranged outside the tank, so that the maintenance is convenient.
Claims (9)
1. The utility model provides a single jar submergence formula heat transfer fused salt energy storage heating device which characterized in that: the molten salt heat storage tank is characterized by comprising a molten salt heat storage tank, wherein a molten salt electric heater is arranged at the top of the molten salt heat storage tank and used for storing valley electricity; the bottom of the molten salt electric heater is positioned in the heating tank; a first heat exchanger is arranged in the molten salt heat storage tank, the first heat exchanger is an immersed floating coil molten salt-heat conducting oil heat exchanger, an inlet reserved flange of the first heat exchanger is connected with a heat conducting oil circulating pump, and two outlets of the first heat exchanger are inserted into the heat conducting oil heat exchange tank; and a second heat exchanger is arranged in the heat conduction oil heat exchange tank, the second heat exchanger is an immersed floating coil heat conduction oil-heating water heat exchanger, and the second heat exchanger is immersed in the heat conduction oil.
2. The single-tank immersed heat exchange molten salt energy storage and supply device according to claim 1, characterized in that: the touch screen is arranged outside the molten salt heat storage tank body and used for displaying the temperature of molten salt in the molten salt heat storage tank and heat conduction oil in the heat conduction oil heat exchange tank and displaying the pressure values in the molten salt heat storage tank and the heat conduction oil heat exchange tank; the touch screen is connected with the controller, and the automatic valves on the molten salt electric heater, the filling port/vent hole of the molten salt heat storage tank, the molten salt discharge port and the filling port/vent hole of the heat transfer oil heat exchange tank are controlled by the controller.
3. The single-tank immersed heat exchange molten salt energy storage and supply device according to claim 1, characterized in that: the molten salt heat storage tank is made of high-temperature-resistant and corrosion-resistant stainless steel, a filling opening/vent hole is formed in the right side of the top of the molten salt heat storage tank, and a molten salt discharge opening is formed in the lower portion of the molten salt heat storage tank; temperature sensor is installed respectively to the last well lower position of fused salt heat storage tank for the fused salt temperature in the monitoring jar, temperature sensor pass through the controller with fused salt electric heater control links to each other, and real-time temperature is gathered by the controller and is shown.
4. The single-tank immersed heat exchange molten salt energy storage and supply device according to claim 1, characterized in that: the molten salt electric heater adopts a flange type cluster electric heater, and the number of the molten salt electric heaters is two.
5. The single-tank immersed heat exchange molten salt energy storage and supply device according to any one of claims 1-4, characterized in that: the bottom of the molten salt heat storage tank is provided with two cylindrical heating tank openings, the heating tank openings are welded with heating tanks, tank bodies of the heating tanks are located inside the heat transfer oil heat exchange tanks and are immersed in the heat transfer oil, and molten salt solution is filled in the heating tanks to secondarily increase heat storage for the heat transfer oil; the heating tank is of a composite material structure and sequentially comprises a high-temperature-resistant corrosion-resistant corrugated stainless steel layer, a heat-conducting silica gel layer and a high-temperature-resistant corrosion-resistant stainless steel outer layer from inside to outside; a plurality of corrugated gaps are equidistantly arranged on the surface of the high-temperature-resistant corrosion-resistant corrugated stainless steel layer, and the gaps are filled with graphite for heat conduction; the outer surface of the high-temperature-resistant corrosion-resistant corrugated stainless steel layer is wrapped with a heat-conducting silica gel layer for enhancing heat conduction; the outer surface of the heat-conducting silica gel layer is wrapped with a high-temperature-resistant corrosion-resistant stainless steel outer layer.
6. The single-tank immersed heat exchange molten salt energy storage and supply device according to claim 5, characterized in that: the heat transfer oil heat exchange tank is arranged at the lower part of the molten salt heat storage tank, and the heat insulation between the outside of the two tanks and the space between the two tanks is made of high-temperature-resistant heat-insulating materials.
7. The single-tank immersed heat exchange molten salt energy storage and supply device according to claim 6, characterized in that: a heat-conducting oil pump interface and an oil discharging port are reserved at the bottom of the heat-conducting oil heat exchange tank, and a filling port/vent hole is formed at the top of the heat-conducting oil heat exchange tank; the bottom of the heat transfer oil heat exchange tank is designed into a left inclined plane and a right inclined plane.
8. The single-tank immersed heat exchange molten salt energy storage and supply device according to claim 1, characterized in that: and the inlet end of the second heat exchanger is connected with heating backwater, and the outlet end of the second heat exchanger is connected with heating water supply.
9. The single-tank immersed heat exchange molten salt energy storage and supply device according to claim 1, characterized in that: the fused salt heat storage tank is provided with a structural layer, and a heat preservation layer is arranged outside the structural layer.
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| CN202022915757.7U CN214747432U (en) | 2020-12-08 | 2020-12-08 | Novel single-tank immersed heat exchange fused salt energy storage heat supply device |
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| CN202022915757.7U CN214747432U (en) | 2020-12-08 | 2020-12-08 | Novel single-tank immersed heat exchange fused salt energy storage heat supply device |
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