CN110186025B - Fused salt electricity heat accumulation boiler - Google Patents
Fused salt electricity heat accumulation boiler Download PDFInfo
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- CN110186025B CN110186025B CN201910328974.5A CN201910328974A CN110186025B CN 110186025 B CN110186025 B CN 110186025B CN 201910328974 A CN201910328974 A CN 201910328974A CN 110186025 B CN110186025 B CN 110186025B
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- molten salt
- heat
- heat exchange
- rotating shaft
- heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/16—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour
- F22B1/165—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour using heat pipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/28—Methods of steam generation characterised by form of heating method in boilers heated electrically
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B31/00—Modifications of boiler construction, or of tube systems, dependent on installation of combustion apparatus; Arrangements of dispositions of combustion apparatus
- F22B31/08—Installation of heat-exchange apparatus or of means in boilers for heating air supplied for combustion
Abstract
Compared with the traditional molten salt electric heat storage system, the highly integrated molten salt electric heat storage boiler provided by the invention does not need any auxiliary facilities such as a high-low temperature molten salt pump, a molten salt valve and a molten salt pipeline, simplifies the original molten salt electric heat storage technology into a single device (product) from a set of complex system, and opens a brand-new application field for the miniaturization application of the molten salt electric heat storage. This fused salt electricity heat accumulation boiler not only can supply vapour, heat, after having combined steam type lithium bromide refrigerating unit, can also be in summer cooling, can not only heat in winter, but also can supply hot water, if heat transfer medium is the air, this fused salt electricity heat accumulation boiler can also provide the hot-blast, supplies the stoving usefulness of industrial and agricultural product. The design greatly improves the utilization rate of the equipment and saves a large amount of initial investment.
Description
Technical Field
The invention discloses a molten salt electric heat storage boiler, particularly relates to a molten salt electric heat storage boiler with wind and light abandoning and valley electricity heating functions, and belongs to the technical field of molten salt heat storage.
Background
With the social development and the improvement of the living standard of people, the day-night difference of electricity utilization structures in China is larger and larger, and the demand of peak shifting and valley filling is stronger; haze seriously affects the north of China due to the increase of coal burning quantity in winter, and daily life of people is affected. The policy of low-ebb electricity and coal-to-electricity is given in the cities of Beijing, Hebei and Dong, three provinces, etc. to consume the low-ebb electricity and reduce the burning coal. A molten salt heat storage system that uses off-peak electricity for heating, cooling, and steam has received attention.
The fused salt heat storage and energy storage is a new technology in China at present, mainly originates from foreign solar photo-thermal power generation technology, and two light condensation modes introduced in China are available and are still in experimental verification at present. Other process flows for energy storage are still basically along with foreign molten salt application modes, and the heating energy storage and heat exchange structures of the molten salt are very complex; for the purpose of molten salt energy storage heating, several domestic companies adopt a high-temperature molten salt tank, a low-temperature molten salt tank, a molten salt pump circulation, pipeline heat preservation and heat tracing, high-temperature heat exchange and low-temperature heat exchange, and then can provide hot water for a heating pipeline. Heating molten salt; the low-temperature molten salt liquid is circulated to the high-temperature molten salt tank by the molten salt pump through the molten salt electric heater for storage, the molten salt liquid in the high-temperature molten salt tank is pumped out by the molten salt pump during heat exchange, passes through the molten salt/heat conduction oil exchanger and then is heated by the heat conduction oil/water exchanger and then is supplied to a heating user for use, and the molten salt liquid cooled by the exchanger flows back to the low-temperature molten salt tank through a pipeline. The secondary heat exchange and the heat efficiency can not be fully utilized, and the defects of high requirements on equipment, pipelines and materials, potential safety hazards and the like caused by high-temperature molten salt liquid circulation are overcome due to the large heat loss caused by separation heating, pipeline transportation and heat loss, quite complicated equipment and difficulty in controlling the whole heating and heat exchange process. And the whole circulation system must carry out the heat tracing, once the heat tracing system stops, when pipeline valve temperature is less than the fused salt freezing point, fused salt liquid can solidify, causes whole circulation system to scrap, produces huge loss. And because the energy is consumed by heat tracing, the circulating heat of the high-temperature molten salt is dissipated, so that the efficiency of the molten salt heat storage and energy storage system is low, and the basic investment cost is greatly increased due to the fact that a complex heating and heat exchange system is not different.
In the prior art, the fused salt heat storage has been widely applied due to good cost performance. At present, commonly used double-tank fused salt stores cold and hot fused salt in different tank bodies respectively, the temperature of the fused salt participating in heat exchange is constant, high-quality steam for power generation is favorably stably output, but the double-tank design cost is high, circulating pipelines are more, so that the energy loss is more, the fused salt is easy to solidify to cause high risk of the system, and the double-tank fused salt is not suitable for a small heating system. In view of this, how to provide a molten salt electric heat storage boiler which has simple structure, low cost, high thermal efficiency utilization, and can shift peak and fill valley, and works by using valley period power is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
Compared with the traditional molten salt electric heat storage system, the integrated molten salt electric heat storage boiler provided by the invention does not need any high-low temperature molten salt pump, molten salt valve and molten salt pipeline, simplifies the original molten salt electric heat storage technology into a single device (product) from a set of complex system, and opens a brand-new application field for the miniaturization application of the molten salt electric heat storage.
This fused salt electricity heat accumulation boiler not only can supply vapour, heat, after having combined steam type lithium bromide refrigerating unit, can also be in summer cooling, can not only heat in winter, but also can supply hot water, if heat transfer medium is the air, this fused salt electricity heat accumulation boiler can also provide the hot-blast, supplies the stoving usefulness of industrial and agricultural product. The design greatly improves the utilization rate of the equipment and saves a large amount of initial investment.
In order to achieve the purpose, the invention adopts the technical scheme that: a fused salt electric heat storage boiler comprises a fused salt heat exchanger, a fused salt single storage tank, a power supply control assembly, an electric heater and fused salt, and is characterized in that a heating section of the electric heater extends into the fused salt single storage tank, is positioned below the liquid level of the fused salt, and is connected with the power supply control assembly; the molten salt heat exchanger is erected on the central line of the molten salt single storage tank, the top of the molten salt heat exchanger is provided with a cold heat exchange medium inlet and a heat exchange medium outlet, a plurality of hot molten salt inlets are arranged on the periphery of the molten salt near the middle of the molten salt heat exchanger at equal intervals, the hot molten salt inlets are positioned below the liquid level of the molten salt and can allow the molten salt to freely enter and exit the inner cavity of the molten salt heat exchanger, the central line at the bottom of the molten salt heat exchanger is provided with a cold molten salt outlet, and the cold molten salt outlet is integrally arranged on the central line of the molten salt heat exchanger in a tubular shape and directly reaches the bottom of the molten salt single storage; the molten salt heat exchanger also comprises a heat insulation outer shell, and the hot molten salt inlet and the cold molten salt outlet both penetrate through the heat insulation outer shell; the electric molten salt pushing device comprises a variable frequency motor, a rotating shaft and paddles, the rotating shaft is arranged in the rotating shaft sleeve, the upper end of the rotating shaft is connected with the variable frequency motor, the lower end of the rotating shaft is connected with the paddles, and the paddles are located in the cold molten salt outlet and can form pushing force when rotating so as to push the molten salt to flow in the molten salt heat exchanger in a circulating manner. Generally, the heat exchange medium flowing through the heat exchange cavity is water or a water-vapor mixed medium, but the heat exchange medium in the heat exchange cavity can also be heat conduction oil or air and the like, and is determined according to the needs.
The fused salt electric heat storage boiler is characterized in that: the fused salt heat exchanger is a vertical tubular fused salt heat exchanger and comprises a heat insulation outer shell, an inner shell, an upper tube box, a lower tube box and a heat exchange tube, wherein a rotating shaft sleeve and a fused salt electric pushing device are arranged on an axis, the rotating shaft sleeve penetrates through the upper tube box and the lower tube box, the upper end of the heat exchange tube penetrates through an upper tube plate and is communicated with the upper tube box, the lower end of the heat exchange tube penetrates through a lower tube plate and is communicated with the lower tube box, the inner shell is in a round container shape, and the upper port of the inner shell; the outer diameter of the lower tube plate is smaller than the inner diameter of the inner shell, and a certain gap through which molten salt can flow is formed between the lower tube plate and the inner shell; a plurality of hot-melt salt inlets are arranged on the periphery of the inner shell body, close to the upper tube plate, on the same horizontal plane at equal intervals, a cold-melt salt outlet is arranged on a bottom axis of the inner shell body, the paddle is arranged in the cold-melt salt outlet, the upper tube box is provided with the heat exchange medium outlet, the lower tube box is provided with the heat exchange medium inlet, and the heat exchange medium inlet and the heat exchange medium outlet all extend out of the top of the molten salt heat exchanger.
The fused salt electric heat storage boiler is characterized in that: the fused salt heat exchanger comprises a heat exchange cavity, a heat insulation outer shell and an inner shell, wherein a rotating shaft sleeve and a fused salt electric pushing device are arranged on an axis, the rotating shaft sleeve penetrates through the heat exchange cavity and then reaches the bottom of the inner shell, an upper tube plate is arranged at the bottom of the heat exchange cavity, the upper tube plate is connected with an upper port of the inner shell, a plurality of heat pipes penetrate through the upper tube plate, a heat dissipation section of each heat pipe is arranged in the heat exchange cavity, a heat absorption section of each heat pipe is arranged in the inner shell, a cold heat exchange medium inlet is arranged at the lower side of the heat exchange cavity, a hot heat exchange medium outlet is arranged at the upper part of the heat exchange cavity, and the heat exchange medium inlet and the heat exchange medium outlet both extend out of the top of; a plurality of hot-melt salt inlets are arranged on the same level on the periphery of the inner shell body, close to the upper tube plate, at equal intervals, a cold-melt salt outlet is arranged on a central axis at the bottom end of the inner shell body, and the paddle is arranged in the cold-melt salt outlet.
The fused salt electric heat storage boiler is characterized in that: the molten salt single storage tank comprises a tank body and a tank cover, and the tank cover is also provided with a plurality of interfaces communicated with the tank body; the electric heater is arranged on the tank cover and extends into the tank body; a through hole is formed in the middle of the tank cover and is matched with the molten salt heat exchanger; the upper surface of the tank cover is provided with a heat insulation layer. Usually, a plurality of interfaces which are arranged on the tank cover and penetrate through the storage tank can be used as an atmospheric pressure outlet or a molten salt filling port, or a socket of a temperature sensor, or an insertion port of a molten salt liquid level meter.
The fused salt electric heat storage boiler is characterized in that: the molten salt electric pushing device comprises a variable frequency motor, a motor mounting seat, a heat insulation coupler, a thrust ball bearing mounting seat, a high-temperature-resistant heat insulation pad, a fixed mounting base, a rotating shaft, a deep groove ball bearing and a blade; the two ends of the rotating shaft sleeve are respectively provided with a deep groove ball bearing, and the rotating shaft is arranged in the rotating shaft sleeve and forms rotating fit through the deep groove ball bearings; the thrust ball bearing is arranged on the thrust ball bearing mounting seat, the motor mounting seat and the thrust ball bearing mounting seat are sequentially arranged on the fixed mounting base, the high-temperature-resistant heat insulation pad is arranged between the thrust ball bearing mounting seat and the fixed mounting base, the upper end of the rotating shaft penetrates through the thrust ball bearing and then is connected with the heat insulation coupler, the lower end of the rotating shaft is connected with the paddle, and the paddle is positioned in the cold molten salt outlet and can form downward pushing force when rotating so as to push the molten salt to flow; the variable frequency motor is arranged on the motor mounting seat.
The fused salt electric heat storage boiler is characterized in that: heat conducting fins are arranged on the heat dissipation section or the heat absorption section, or the heat dissipation section and the heat absorption section of the heat pipe.
The fused salt electric heat storage boiler is characterized in that: the heat exchange tubes are arranged in a row of tubes, and a plurality of baffle plates are arranged on the heat exchange tubes.
The fused salt electric heat storage boiler is characterized in that: the heat pipes are arranged in a row of pipes, and a plurality of baffle plates are arranged on the heat pipes.
The fused salt electric heat storage boiler is characterized in that: and temperature probes are respectively arranged in the molten salt heat exchanger or the molten salt single storage tank, or in the molten salt heat exchanger and the molten salt single storage tank.
The fused salt electric heat storage boiler is characterized in that: the heat-insulating outer shell is integrally in an open container shape, an annular flanging is arranged at the upper end port of the heat-insulating outer shell, the annular flanging is lapped on the tank cover, the top of the heat exchange cavity or the upper pipe box is exposed out of the tank cover, and the outer surface of the heat exchange cavity or the upper pipe box is provided with a heat-insulating layer; the bottom end of the cold molten salt outlet is provided with three supporting legs.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. The drawings are only for reference and illustration purposes and are not intended to limit the invention.
FIG. 1 is a schematic structural diagram of a molten salt electric heat storage boiler provided by the invention;
FIG. 2 is a schematic structural diagram of a molten salt single storage tank provided by the invention;
FIG. 3 is a schematic structural diagram of a molten salt heat exchanger provided by the invention;
FIG. 4 is a schematic structural diagram of another molten salt heat exchanger provided by the present invention;
FIG. 5 is a schematic structural diagram of another molten salt electric pushing device provided by the invention;
fig. 6 is a partial enlarged view of fig. 2 provided by the present invention.
In the figure: the device comprises a fused salt heat exchanger 1, a fused salt single storage tank 2, a power supply control assembly 3, an electric heater 4, fused salt 5, a fused salt electric pushing device 6, a variable frequency motor 6a, a motor mounting seat 6b, a heat insulation coupler 6c, a thrust ball bearing 6d, a thrust ball bearing mounting seat 6e, a high-temperature-resistant heat insulation pad 6f, a fixed mounting base 6g, a long shaft 6i, a deep groove ball bearing 6j, a blade 6k, a temperature probe 7, a steam-water separator 8, a demister 9, a heat exchange cavity 10, a cold medium inlet 10a, a hot medium outlet 10b, a heat insulation outer shell 10c, an annular flanging 10d, an inner shell 11, a hot molten salt inlet 11a, a cold molten salt outlet pipe 11b, a supporting leg 11c, an upper pipe box 12, an upper pipe plate 12a, a lower pipe box 13, a lower pipe 13, a heat exchange pipes 14, a heat pipe 15, a heat dissipation section 15a, baffle 17, can 20, can cover 21, through-hole 21a, interface 22.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example 1:
as shown in fig. 1, 2, 3, 5 and 6, the molten salt electric heat storage boiler comprises a molten salt heat exchanger 1, a molten salt single storage tank 2, a power supply control assembly 3, an electric heater 4 and molten salt 5, wherein a heating section of the electric heater 4 extends into the molten salt single storage tank 2 and is positioned below the liquid level of the molten salt 5 (indicated by a dotted line at the upper part of the storage tank in fig. 1 and 2), and is connected with the power supply control assembly 3.
The molten salt heat exchanger 1 is erected on the central line of the molten salt single storage tank 2, the top of the molten salt heat exchanger is provided with a cold heat exchange medium inlet 10a and a heat exchange medium outlet 10b, the periphery of the middle part of the molten salt heat exchanger is provided with a plurality of hot melt salt inlets 11a at equal intervals, the hot melt salt inlets 11a are positioned below the liquid level of the molten salt 5 (marked by dotted lines on the upper parts of the storage tanks in figures 1 and 2), the molten salt 5 can freely enter and exit from the inner cavity of the molten salt heat exchanger 1, the central axis of the bottom end of the molten salt heat exchanger is provided with a cold melt salt outlet 11b, and the cold melt salt outlet 11b is integrally and tubularly arranged on the central axis of the molten salt heat exchanger 1 and directly reaches; the molten salt heat exchanger 1 also comprises a heat insulation outer shell 10c, and the hot molten salt inlet 11a and the cold molten salt outlet 11b both penetrate through the heat insulation outer shell 10 c; the central axis of the molten salt heat exchanger 1 is also provided with a rotating shaft sleeve 16 and an electric molten salt pushing device 6, the electric molten salt pushing device 6 comprises a variable frequency motor 6a, a rotating shaft 6i and a paddle 6k, the rotating shaft 6i is arranged in the rotating shaft sleeve 16, the upper end of the rotating shaft is connected with the variable frequency motor 6a, the lower end of the rotating shaft is connected with the paddle 6k, and the paddle 6k is positioned in the cold molten salt outlet 11b and can form pushing force during rotation so as to push molten salt to circularly flow in the molten salt heat exchanger 1. Generally, the heat exchange medium flowing through the heat exchange cavity is water or a water-vapor mixed medium, but the heat exchange medium in the heat exchange cavity can also be heat conduction oil or air and the like, and is determined according to the needs.
In this embodiment, the molten salt heat exchanger 1 is a vertical tube-type molten salt heat exchanger, and includes a heat insulation outer shell 10c, an inner shell 11, an upper tube box 12, a lower tube box 13, and a heat exchange tube 14, wherein a rotating shaft sleeve 16 and a molten salt electric pushing device 6 are disposed on an axis, the rotating shaft sleeve 16 penetrates through the upper tube box 12 and the lower tube box 13, the upper end of the heat exchange tube 14 penetrates through an upper tube plate 12a and is communicated with the upper tube box 12, the lower end of the heat exchange tube 14 penetrates through a lower tube plate 13a and is communicated with the lower tube box 13, the inner shell 11 is in a shape of a round container, and the upper; the outer diameter of the lower tube plate 13a is smaller than the inner diameter of the inner shell 11, and a certain gap for molten salt to flow through is formed between the lower tube plate and the inner shell; a plurality of hot melt salt inlets 11a are arranged on the periphery of the inner shell 11 close to the upper tube plate 12a at equal intervals on the same horizontal plane, a cold melt salt outlet 11b is arranged on a bottom end axis of the inner shell, the blades 6k are arranged in the cold melt salt outlet 11b, the upper tube box 12 is provided with a heat exchange medium outlet 10b, the lower tube box 13 is provided with the heat exchange medium inlet 10a, and the heat exchange medium inlet 10a and the heat exchange medium outlet 10b extend out of the top of the molten salt heat exchanger 1.
In this embodiment, the molten salt single storage tank 2 includes a tank body 20 and a tank cover 21, and the tank cover 21 is further provided with a plurality of ports 22 communicated with the tank body; the electric heater 4 is arranged on the tank cover 21 and extends into the tank body 20, and the heating section of the electric heater 4 is positioned below the liquid level of the molten salt 5; a through hole 21a is formed in the middle of the tank cover 21, and the through hole 21a is matched with the outer diameter of the molten salt heat exchanger 1; the upper surface of the tank cover 21 is provided with a heat insulation layer. Usually, the ports 22 formed on the tank cover and penetrating through the storage tank can be used as a normal pressure outlet, a molten salt filling port, a socket of a temperature sensor or an insertion port of a molten salt liquid level meter.
In the embodiment, the molten salt electric pushing device 6 comprises a variable frequency motor 6a, a motor mounting seat 6b, a heat insulation coupler 6c, a thrust ball bearing 6d, a thrust ball bearing mounting seat 6e, a high-temperature-resistant heat insulation pad 6f, a fixed mounting base 6g, a rotating shaft 6i, a deep groove ball bearing 6j and blades 6 k; two end openings of the rotating shaft sleeve 16 are respectively provided with a deep groove ball bearing 6j, and the rotating shaft 6i is arranged in the rotating shaft sleeve 16 and forms rotating fit through the deep groove ball bearings 6 j; a thrust ball bearing 6d is mounted on the thrust ball bearing mounting seat 6e, the motor mounting seat 6b and the thrust ball bearing mounting seat 6e are sequentially mounted on the fixed mounting base 6g, the high-temperature-resistant heat-insulating pad 6f is arranged between the thrust ball bearing mounting seat 6e and the fixed mounting base 6g, the upper end of the rotating shaft 6i penetrates through the thrust ball bearing 6d and then is connected with the heat-insulating coupler 6c, the lower end of the rotating shaft is connected with the paddle 6k, and the paddle 6k is positioned in the cold molten salt outlet 11b and can form downward pushing force when rotating so as to push the flow of molten salt; the variable frequency motor 6a is mounted on the motor mounting seat 6 b.
In this embodiment, the heat exchange tubes 14 are arranged in a tubular array and provided with a plurality of baffles 17.
In the present embodiment, the molten salt heat exchanger 1 and the molten salt single storage tank 2 are respectively provided with temperature probes 7.
In this embodiment, the heat-insulating outer casing 10c is an open container, an annular flange 10d is disposed at an upper end of the heat-insulating outer casing, the annular flange 10d is attached to the tank cover 21 through the through hole 21a, the top of the upper pipe box 12 is exposed out of the tank cover 21, and a heat-insulating layer is disposed on an outer surface of the upper pipe box; the bottom end of the cold molten salt outlet 11b is provided with three supporting legs 11 c.
Example 2:
as shown in fig. 4, the molten salt heat exchanger 1 includes a heat exchange cavity 10, a heat insulation outer shell 10c, and an inner shell 11, wherein an axis is provided with a rotating shaft sleeve 16 and a molten salt electric pushing device 6, the rotating shaft sleeve 16 penetrates through the heat exchange cavity 10 and then reaches the bottom of the inner shell 11, the bottom of the heat exchange cavity 10 is provided with an upper tube plate 12a, the upper tube plate 12a is connected with an upper port of the inner shell 11, a plurality of heat pipes 15 penetrate through the upper tube plate 12a, wherein heat dissipation sections 15a of the heat pipes 15 are arranged in the heat exchange cavity 10, heat absorption sections 15b of the heat pipes 15 are arranged in the inner shell 11, wherein a cold heat exchange medium inlet 10a is arranged at a lower side of the heat exchange cavity 10, a hot heat exchange medium outlet 10b is arranged at an upper portion of the heat exchange cavity 10, and both the heat exchange medium inlet 10a and the heat exchange medium outlet 10b extend out from the; a plurality of hot melt salt inlets 11a are arranged on the same horizontal circumference of the inner shell 11 close to the upper tube plate 12a at equal intervals, a cold melt salt outlet 11b is arranged on the axis at the bottom end of the inner shell, and the paddle 6k is arranged in the cold melt salt outlet 11 b.
In this embodiment, the heat dissipating section 15a of the heat pipe 15 is provided with heat conducting fins 15 c. The heat pipes 15 are arranged in a row of pipes and are provided with a plurality of baffles 17.
Other descriptions are omitted with reference to embodiment 1.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although terms such as a molten salt heat exchanger, a molten salt single storage tank, a power supply control assembly, an electric heater, molten salt, a molten salt electric pushing device, a variable frequency motor, a motor mounting seat, a heat insulation coupling, a thrust ball bearing mounting seat, a high temperature resistant heat insulation pad, a fixed mounting base, a long shaft, a deep groove ball bearing, a blade, a temperature probe, a steam-water separator, a demister, a heat exchange cavity, a cold medium inlet, a hot medium outlet, a heat insulation outer shell, an annular flanging, an inner shell, a hot-melt salt inlet, a cold-melt salt outlet pipe, a supporting leg, an upper pipe box, a lower pipe box, a heat exchange pipe, a heat dissipation section, a heat absorption section, a heat conduction fin, a rotating shaft sleeve, a baffle plate, a tank body, a. The present technology uses molten salt as a heat storage material, but is not limited to molten salt, and these terms are used only for the purpose of more conveniently describing and explaining the essence of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (9)
1. A fused salt electric heat storage boiler comprises a fused salt heat exchanger (1), a fused salt single storage tank (2), a power supply control assembly (3), an electric heater (4) and fused salt (5), and is characterized in that a heating section of the electric heater (4) extends into the fused salt single storage tank (2), is positioned below the liquid level of the fused salt (5), and is connected with the power supply control assembly (3); the molten salt heat exchanger (1) is erected on a central line of the molten salt single storage tank (2), the top of the molten salt heat exchanger is provided with a cold heat exchange medium inlet (10 a) and a heat exchange medium outlet (10 b), a plurality of hot molten salt inlets (11 a) are arranged on the periphery of the middle part of the molten salt heat exchanger at equal intervals, the hot molten salt inlets (11 a) are positioned below the liquid level of the molten salt (5), the molten salt (5) can freely enter and exit from an inner cavity of the molten salt heat exchanger (1), a cold molten salt outlet (11 b) is arranged on the central line of the bottom end of the molten salt heat exchanger, the cold molten salt outlet (11 b) is integrally and vertically arranged on the central line of the molten salt heat exchanger (1) in a tubular shape and directly reaches the bottom of the molten salt single storage tank (2), and the molten salt (; the molten salt heat exchanger (1) also comprises a heat insulation outer shell (10 c), and the hot molten salt inlet (11 a) and the cold molten salt outlet (11 b) both penetrate through the heat insulation outer shell (10 c); the electric molten salt pushing device (6) comprises a variable frequency motor (6 a), a rotating shaft (6 i) and blades (6 k), the rotating shaft (6 i) is arranged in the rotating shaft sleeve (16), the upper end of the rotating shaft is connected with the variable frequency motor (6 a), the lower end of the rotating shaft is connected with the blades (6 k), the blades (6 k) are located in a cold molten salt outlet (11 b) and can form pushing force during rotation so as to push molten salt to flow in the molten salt heat exchanger (1) in a circulating manner, and the electric molten salt pushing device (6) comprises a variable frequency motor (6 a), a motor mounting seat (6 b), a heat insulation coupler (6 c), a thrust ball bearing (6 d), a thrust ball bearing mounting seat (6 e), a high-temperature-resistant heat insulation pad (6 f), The device comprises a fixed mounting base (6 g), a rotating shaft (6 i), a deep groove ball bearing (6 j) and a paddle (6 k); two end openings of the rotating shaft sleeve (16) are respectively provided with a deep groove ball bearing (6 j), and the rotating shaft (6 i) is arranged in the rotating shaft sleeve (16) and forms rotating fit through the deep groove ball bearings (6 j); the thrust ball bearing (6 d) is installed on the thrust ball bearing installation seat (6 e), the motor installation seat (6 b) and the thrust ball bearing installation seat (6 e) are sequentially installed on the fixed installation base (6 g), the high-temperature-resistant heat insulation pad (6 f) is arranged between the thrust ball bearing installation seat (6 e) and the fixed installation base (6 g), the upper end of the rotating shaft (6 i) penetrates through the thrust ball bearing (6 d) and then is connected with the heat insulation coupler (6 c), the lower end of the rotating shaft is connected with the paddle (6 k), and the paddle (6 k) is located in the cold molten salt outlet (11 b) and can form downward pushing force during rotation so as to push the flow of molten salt; the variable frequency motor (6 a) is arranged on the motor mounting seat (6 b).
2. The molten salt electric heat storage boiler as claimed in claim 1, characterized in that the molten salt heat exchanger (1) is a vertical tube type molten salt heat exchanger, and comprises a heat-insulating outer shell (10 c), an inner shell (11), an upper tube box (12), a lower tube box (13) and a heat exchange tube (14), wherein a rotating shaft sleeve (16) and a molten salt electric pushing device (6) are arranged on an axis, the rotating shaft sleeve (16) penetrates through the upper tube box (12) and the lower tube box (13), the upper end of the heat exchange tube (14) penetrates through the upper tube plate (12 a) to be communicated with the upper tube box (12), the lower end of the heat exchange tube (14) penetrates through the lower tube plate (13 a) to be communicated with the lower tube box (13), the inner shell (11) is in a round container shape, and the upper end of the inner shell is connected with the upper; the outer diameter of the lower tube plate (13 a) is smaller than the inner diameter of the inner shell (11), and a certain gap through which molten salt can flow is formed between the lower tube plate and the inner shell; a plurality of hot molten salt inlets (11 a) are arranged on the inner shell (11) close to the periphery of an upper tube plate (12 a) at equal intervals, a cold molten salt outlet (11 b) is arranged on a bottom end axis of the hot molten salt inlets, blades (6 k) are arranged in the cold molten salt outlet (11 b), a heat exchange medium outlet (10 b) is arranged on the upper tube box (12), the heat exchange medium inlet (10 a) is arranged on the lower tube box (13), and the heat exchange medium inlet (10 a) and the heat exchange medium outlet (10 b) extend out of the top of the molten salt heat exchanger (1).
3. The molten salt electricity-heat storage boiler of claim 1, characterized in that the molten salt heat exchanger (1) comprises a heat exchange cavity (10), a heat insulation outer shell (10 c) and an inner shell (11), wherein a rotating shaft sleeve (16) and a molten salt electric pushing device (6) are arranged on an axis, the rotating shaft sleeve (16) penetrates through the heat exchange cavity (10) and then reaches the bottom of the inner shell (11), an upper tube plate (12 a) is arranged at the bottom of the heat exchange cavity (10), the upper tube plate (12 a) is connected with an upper port of the inner shell (11), a plurality of heat pipes (15) penetrate through the upper tube plate (12 a), wherein heat dissipation sections (15 a) of the heat pipes (15) are arranged in the heat exchange cavity (10), heat absorption sections (15 b) of the heat pipes (15) are arranged in the inner shell (11), and wherein a cold heat exchange medium inlet (10 a) is arranged at the lower side of the heat exchange cavity (10), a heat exchange medium outlet (10 b) is arranged at the upper part of the heat exchange cavity (10), and a heat exchange medium inlet (10 a) and a heat exchange medium outlet (10 b) both extend out of the top of the molten salt heat exchanger (1); a plurality of hot molten salt inlets (11 a) are arranged on the same horizontal plane on the periphery of the inner shell (11) close to the upper tube plate (12 a) at equal intervals, a cold molten salt outlet (11 b) is arranged on the axis at the bottom end of the inner shell, and the blades (6 k) are arranged in the cold molten salt outlet (11 b).
4. A molten salt electric heat storage boiler as claimed in claim 2 or 3, characterized in that the molten salt single storage tank (2) comprises a tank body (20) and a tank cover (21), and the tank cover (21) is provided with a plurality of interfaces (22) communicated with the tank body; the electric heater (4) is arranged on the tank cover (21) and extends into the tank body (20); a through hole (21 a) is formed in the middle of the tank cover (21), and the through hole (21 a) is matched with the molten salt heat exchanger (1); the upper surface of the tank cover (21) is provided with a heat insulation layer.
5. A molten salt electric heat storage boiler as claimed in claim 3, characterised in that heat conducting fins (15 c) are provided on the heat dissipating section (15 a) or the heat absorbing section (15 b), or both the heat dissipating section (15 a) and the heat absorbing section (15 b), of the heat pipe (15).
6. A molten salt electric heat storage boiler as claimed in claim 2, characterised in that the heat exchange tubes (14) are arranged in a tubular array and are provided with baffles (17).
7. A molten salt electric heat storage boiler as claimed in claim 3, characterised in that the heat pipes (15) are arranged in a row of tubes and are provided with baffles (17).
8. A molten salt electric heat storage boiler according to claim 1, characterized in that temperature probes (7) are provided in the molten salt heat exchanger (1) or the molten salt single storage tank (2), or in the molten salt heat exchanger (1) and the molten salt single storage tank (2), respectively.
9. A molten salt electric heat storage boiler as claimed in claim 4, characterized in that the heat insulation outer shell (10 c) is in an open container shape as a whole, an annular flange (10 d) is arranged at the upper end of the heat insulation outer shell, the annular flange (10 d) is lapped on a tank cover (21) as claimed in claim 4, the top of the heat exchange cavity (10) or the upper pipe box (12) is exposed out of the tank cover (21), and the outer surface of the heat exchange cavity or the upper pipe box (12) is provided with a heat insulation layer; the bottom end of the cold molten salt outlet (11 b) is provided with three supporting legs (11 c).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910328974.5A CN110186025B (en) | 2019-04-23 | 2019-04-23 | Fused salt electricity heat accumulation boiler |
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| CN201910328974.5A CN110186025B (en) | 2019-04-23 | 2019-04-23 | Fused salt electricity heat accumulation boiler |
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| CN110186025A CN110186025A (en) | 2019-08-30 |
| CN110186025B true CN110186025B (en) | 2020-12-29 |
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| JP2012112700A (en) * | 2010-11-22 | 2012-06-14 | Sumitomo Heavy Ind Ltd | Wear evaluating device and evaluating method |
| CN202209259U (en) * | 2011-09-07 | 2012-05-02 | 张建城 | Groove-type solar middle and high temperature integrated thermal generating device |
| CN202284527U (en) * | 2011-11-03 | 2012-06-27 | 张建城 | Gasification complementary stored-energy thermal power generation device of solar energy and biomass |
| CN202300882U (en) * | 2011-11-03 | 2012-07-04 | 张建城 | Solar energy and wind energy complementary energy storage thermal power generation device |
| CN104266358A (en) * | 2014-09-24 | 2015-01-07 | 山东省汶上重力机械厂 | Fused salt energy storage heating heat-exchange system |
| CN205448314U (en) * | 2016-03-23 | 2016-08-10 | 深圳市爱能森设备技术有限公司 | Single jar of built -in heat transfer millet electricity boiler of fused salt heat -retaining |
| CN105627276B (en) * | 2016-03-23 | 2018-08-28 | 深圳市爱能森设备技术有限公司 | A kind of built-in paddy electricity steam boiler and the heat-exchange method of exchanging heat of single tank of fused salt heat accumulation |
| CN106352312A (en) * | 2016-08-24 | 2017-01-25 | 中山大学 | Fused salt thermocline heat storage and steam generation integrated device and method |
| CN206803323U (en) * | 2017-03-21 | 2017-12-26 | 百吉瑞（辽宁）新能源股份有限公司 | A kind of fused salt accumulation of heat hot-air takes heat boiler |
| CN107238203A (en) * | 2017-07-10 | 2017-10-10 | 黄善清 | The single tank fused salt heat storage electric boiler and heat-exchange method of a kind of heat pipe heat exchanging |
| CN207050224U (en) * | 2017-08-03 | 2018-02-27 | 黄善清 | A kind of fused salt heat storage electric boiler using thermally stratified layer principle |
| CN207350298U (en) * | 2017-08-30 | 2018-05-11 | 中投亿星新能源投资有限公司 | A kind of fused salt steam generator |
| CN109185951A (en) * | 2018-09-28 | 2019-01-11 | 青岛骏鹏石化设备制造有限公司 | A kind of fused salt accumulation of heat electrically heated boiler |
| CN110094708A (en) * | 2019-04-19 | 2019-08-06 | 李渊 | A kind of tower type solar boiler |
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Effective date of registration: 20201221 Address after: Room 1002, building 19, Xiande community, Nanfeng street, Xianju County, Taizhou City, Zhejiang Province, 317300 Applicant after: Taizhou Chuneng Environmental Technology Co.,Ltd. Address before: 317317 No.30, Yong'an Avenue, Baita Industrial Park, Xianju County, Taizhou City, Zhejiang Province Applicant before: Li Yuan |