CN105627276A - Molten salt heat storage single-tank internal arrangement heat exchange off-peak electricity steam boiler and heat exchange method - Google Patents
Molten salt heat storage single-tank internal arrangement heat exchange off-peak electricity steam boiler and heat exchange method Download PDFInfo
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- CN105627276A CN105627276A CN201610168132.4A CN201610168132A CN105627276A CN 105627276 A CN105627276 A CN 105627276A CN 201610168132 A CN201610168132 A CN 201610168132A CN 105627276 A CN105627276 A CN 105627276A
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- fused salt
- tank
- water
- heat exchange
- heat
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Classifications
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
- F24H7/0233—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
Abstract
The invention discloses a molten salt heat storage single-tank internal arrangement heat exchange off-peak electricity steam boiler and a heat exchange method. The electricity steam boiler comprises a molten salt tank, an electric heater and a steam generator; the electric heater is arranged in an electric heating area inside the molten salt tank, and the steam generator is arranged in a heat exchange area inside the molten salt tank; molten salt in the molten salt tank is heated by the electric heater in the electric heating area and then flows to the heat exchange area to achieve heat releasing; and the cooled molten salt circulates to the electric heating area through a molten salt conveying pipeline. The single-tank internal arrangement heat exchange scheme is adopted, the heated molten salt flows in the molten salt tank, heat exchange between the molten salt and a heat exchanger can be achieved in the molten salt tank, material cost is effectively saved, and molten salt solidification and pipeline blockage can be effectively prevented.
Description
Technical field
The present invention relates to electricity steam boiler field, particularly relate to the built-in heat exchange paddy electricity steam boiler of single tank and the heat-exchange method of a kind of fused salt storage heat.
Background technology
Current fused salt heat storage pot stove is mainly used in solar light-heat power-generation, existing solar light-heat power-generation storage heat and heat exchange generally adopt two external heat exchange scheme of tank (namely high-temperature tank, cryogenic tank, interchanger), during the Industrial Boiler of this kind of technical scheme low temperature in being applied to, there are the following problems and shortcoming: two tank all needs the steel plate materials of corrosion-and high-temp-resistant and lagging material of good performance, and cost compare is expensive; The flow control of pump for liquid salts requires precisely; Interchanger and pipeline need good anti-fused salt to solidify the measure with blocking pipe; Need valve that is high temperature resistant and that corrode and metrical instrument.
Summary of the invention
It is an object of the invention to provide single tank built-in heat exchange paddy electricity steam boiler of a kind of fused salt storage heat and heat-exchange method, the heat exchange scheme that the present invention adopts single tank built-in, effectively saved material cost, and can effectively prevent fused salt from solidifying and the blocking of pipeline.
For reaching this object, the present invention by the following technical solutions:
The built-in heat exchange paddy electricity steam boiler of single tank of a kind of fused salt storage heat, comprise fused salt tank, electric heater and vapour generator, described electric heater is arranged at the electrically heated district of described fused salt tank inside, described vapour generator is arranged at the heat transfer zone of described fused salt tank inside, fused salt in described fused salt tank flows to described heat transfer zone in described electrically heated district after described electric heater heats, realizing heat release, the fused salt after cooling is circulated to described electrically heated district by fused salt transmission pipeline.
Wherein, described fused salt tank also comprises cold zone and low temperature suction district, described cold zone, electrically heated district, heat transfer zone and low temperature suction district divide successively by the flow direction of fused salt, and described low temperature suction district is connected by pump for liquid salts and fused salt transmission pipeline with described cold zone.
The first dividing plate it is provided with between described cold zone and electrically heated district, it is provided with second partition between described electrically heated district and heat transfer zone, the 3rd dividing plate it is provided with between described heat transfer zone and low temperature suction district, fused salt flow passage is formed at the top of described first dividing plate and described fused salt tank, fused salt flow passage is formed on the top of described second partition and described fused salt tank, and fused salt flow passage is formed on the bottom of described 3rd dividing plate and described fused salt tank.
Described paddy electricity steam boiler also comprises water tank and service pump, the water outlet of described service pump connects the cooling water inlet of described vapour generator by inlet channel, the water-in of described service pump connects the water outlet of described water tank, the water-in of described water tank is connected with water supply pipe, is provided with water treating device in described water supply pipe.
Wherein, the vapour outlet of described vapour generator connects steam distributor by steam-pipe, connects feed-water valve by inlet channel.
Described paddy electricity steam boiler, also comprises retrieving arrangement, and described retrieving arrangement is connected with described water tank by recovery channel.
Described paddy electricity steam boiler also comprises the first thermometer, the 2nd thermometer, the 3rd thermometer and the 4th thermometer, the temperature detecting unit of described first thermometer is positioned at described cold zone, the temperature detecting unit of described 2nd thermometer is positioned at described electrically heated district, the temperature detecting unit of described 3rd thermometer is positioned at described heat transfer zone, and the temperature detecting unit of described 4th thermometer is positioned at described low temperature suction district.
Wherein, described fused salt is quartz sand composite fused salt.
A method for fused salt heat storage and exchange, comprising:
There is provided single tank of a kind of fused salt storage heat built-in heat exchange paddy electricity steam boiler, comprise fused salt tank, electric heater and vapour generator, described electric heater is arranged at the electrically heated district of described fused salt tank inside, and described vapour generator is arranged at the heat transfer zone of described fused salt tank inside;
Fused salt in described fused salt tank flows to described heat transfer zone in described electrically heated district after described electric heater heats;
Fused salt after heating is in described heat transfer zone and described vapour generator heat exchange, it is achieved heat release, and the fused salt after cooling is circulated to described electrically heated district by fused salt transmission pipeline.
Wherein, store up exothermic heat by fused salt and prepare steam, comprising:
Cold water is pumped the cooling water inlet to described vapour generator by inlet channel by service pump;
The cold water heat exchange of fused salt after described heating in described heat transfer zone and described vapour generator, heating cold water;
Water after heating generates steam and is delivered to described steam distributor by the vapour outlet of described vapour generator.
The useful effect of the present invention is: the present invention discloses the built-in heat exchange paddy electricity steam boiler of single tank and the heat-exchange method of a kind of fused salt storage heat. This electricity steam boiler comprises fused salt tank, electric heater and vapour generator, described electric heater is arranged at the electrically heated district of described fused salt tank inside, described vapour generator is arranged at the heat transfer zone of described fused salt tank inside, fused salt in described fused salt tank flows to described heat transfer zone in described electrically heated district after described electric heater heats, realizing heat release, the fused salt after cooling is circulated to described electrically heated district by fused salt transmission pipeline. The heat exchange scheme that the present invention adopts single tank built-in, the fused salt of heating flow in fused salt tank, and also heat exchange between realization and interchanger in fused salt tank, has effectively saved material cost, and can effectively prevent fused salt from solidifying and the blocking of pipeline.
Accompanying drawing explanation
Fig. 1 is the structural representation of the built-in heat exchange paddy electricity steam boiler of single tank of a kind of fused salt storage heat that the specific embodiment of the invention one provides.
Fig. 2 is the method flow diagram of the method for a kind of heat storage and exchange that the embodiment of the present invention two provides.
Fig. 3 is the method flow diagram of a kind of method being prepared steam by fused salt storage exothermic heat that the embodiment of the present invention two provides.
In figure:
1-fused salt tank; 2-electric heater; 3-vapour generator; 4-electrically heated district; 5-heat transfer zone; 6-fused salt transmission pipeline; 7-cold zone; 8-low temperature suction district; 9-pump for liquid salts; 10-first dividing plate; 11-second partition; 12-the 3rd dividing plate; 13-water tank; 14-service pump; 15-water supply pipe; 16-water treating device; 17-steam distributor; 18-feed-water valve; 19-first thermometer; 20-the 2nd thermometer; 21-the 3rd thermometer; 22-the 4th thermometer; 23-recovery channel.
Embodiment
Below in conjunction with accompanying drawing and the technical scheme of the present invention is described further by embodiment.
Embodiment one
As shown in Figure 1, the present embodiment provides single tank of a kind of fused salt storage heat built-in heat exchange paddy electricity steam boiler, comprise fused salt tank 1, electric heater 2 and vapour generator 3, described electric heater 2 is arranged at the electrically heated district 4 of described fused salt tank 1 inside, described vapour generator 3 is arranged at the heat transfer zone 5 of described fused salt tank 1 inside, fused salt in described fused salt tank 1 flows to described heat transfer zone 5 in described electrically heated district 4 after described electric heater 2 heats, realizing heat release, the fused salt after cooling is circulated to described electrically heated district 4 by fused salt transmission pipeline 6.
Described fused salt tank 1 also comprises cold zone 7 and low temperature suction district 8, described cold zone 7, electrically heated district 4, heat transfer zone 5 and low temperature suction district 8 divide successively by the flow direction of fused salt, and described low temperature suction district 8 is connected by pump for liquid salts 9 and fused salt transmission pipeline 6 with described cold zone 7.
The first dividing plate 10 it is provided with between described cold zone 7 and electrically heated district 4, it is provided with second partition 11 between described electrically heated district 4 and heat transfer zone 5, the 3rd dividing plate 12 it is provided with between described heat transfer zone 5 and low temperature suction district 8, described first dividing plate 10 forms fused salt flow passage with the top of described fused salt tank 1, described second partition 11 forms fused salt flow passage with the top of described fused salt tank 1, and described 3rd dividing plate 12 forms fused salt flow passage with the bottom of described fused salt tank 1.
In the present embodiment, fused salt tank 1 arranges dividing plate and can play the guide functions to fused salt, fused salt is pumped to cold zone 7 in low temperature suction district 8, the outlet of fused salt transmission pipeline 6 is in the lower space of cold zone 7, due to the effect of the first dividing plate 10, the fused salt of cooling is assembled in cold zone 7, when the top of fast arrival fused salt tank 1, due to opening, described fused salt natural flow is in described electrically heated district 4; Due to the effect of electric heater 2 in electrically heated district 4, fused salt is heated, when the fused salt in electrically heated district 4 arrives the top of fused salt tank 1 soon, due to the space of second partition 11 with fused salt tank 1 top, fused salt automatic flowing after heating is in heat transfer zone 5, in heat transfer zone 5, fused salt and vapour generator 3 after heating carry out heat exchange, fused salt after heat release turns cold, low temperature suction district 8 is flowed to the opening bottom fused salt tank 1 by the 3rd dividing plate 12, fused salt in low temperature suction district is pumped to cold zone 7 through fused salt transmission pipeline 6 again, enters next circulation.
In the present embodiment, in fused salt transmission pipeline 6, the fused salt of transmission is the fused salt after cooling, avoids high-temperature molten salt and flows in heat transfer tube and transmission pipeline, solves the problem that may occur solidifying plugging. In the present embodiment, pump for liquid salts 9 only does fused salt circulatory function, reduces control accuracy requirement.
Described paddy electricity steam boiler also comprises water tank 13 and service pump 14, the water outlet of described service pump 14 connects the cooling water inlet of described vapour generator 3 by inlet channel, the water-in of described service pump 14 connects the water outlet of described water tank 13, the water-in of described water tank 13 is connected with water supply pipe 15, is provided with water treating device 16 in described water supply pipe 15.
The vapour outlet of described vapour generator 3 connects steam distributor 17 by steam-pipe, connects feed-water valve 18 by inlet channel.
In the present embodiment, feed-water valve 18 is connected with inlet channel, and feed-water valve 18 can carry out the flooding quantity of regulating and controlling inlet channel according to vapor pressure size.
Described paddy electricity steam boiler also comprises retrieving arrangement, and described retrieving arrangement is connected with described water tank 13 by recovery channel 23. The hot water and steam that user is not finished is delivered to water tank 13 by recovery channel 23, carries out recycle next time.
In the present embodiment, tap water before heating, carries out purifying treatment so that water is not easily scaling in heating and transmitting procedure, is beneficial to the maintenance of equipment.
Described paddy electricity steam boiler also comprises the first thermometer 19, the 2nd thermometer 20, the 3rd thermometer 21 and the 4th thermometer 22, the temperature detecting unit of described first thermometer 19 is positioned at described cold zone 7, the temperature detecting unit of described 2nd thermometer 20 is positioned at described electrically heated district 4, the temperature detecting unit of described 3rd thermometer 21 is positioned at described heat transfer zone 5, and the temperature detecting unit of described 4th thermometer 22 is positioned at described low temperature suction district 8.
In the present embodiment, each district in fused salt tank 1 is all provided with thermometer, so that the temperature of monitor in real time each district fused salt.
In the present embodiment, described fused salt is quartz sand composite fused salt.
In the present embodiment, the heat exchange scheme adopting single tank built-in, the fused salt of heating flows in fused salt tank, also in fused salt tank, realize the heat exchange between vapour generator, effectively save steel plate materials and lagging material, reduced cost, and can effectively prevent fused salt from solidifying and the blocking of pipeline. And the pump for liquid salts in the present invention only does fused salt circulatory function, reduce control accuracy requirement, decrease the number of applications of high temperature instrument and valve.
Embodiment two
As shown in Figure 2, the present embodiment provides a kind of method of fused salt heat storage and exchange, comprising:
S101, there is provided single tank of a kind of fused salt storage heat built-in heat exchange paddy electricity steam boiler, comprising fused salt tank, electric heater and vapour generator, described electric heater is arranged at the electrically heated district of described fused salt tank inside, and described vapour generator is arranged at the heat transfer zone of described fused salt tank inside.
S102, the fused salt in described fused salt tank flows to described heat transfer zone in described electrically heated district after described electric heater heats.
S103, the fused salt after heating is in described heat transfer zone and described vapour generator heat exchange, it is achieved heat release, and the fused salt after cooling is circulated to described electrically heated district by fused salt transmission pipeline.
Wherein, as shown in Figure 3, store up exothermic heat by fused salt and prepare steam, comprising:
S201, cold water is pumped the cooling water inlet to described vapour generator by inlet channel by service pump;
S202, the cold water heat exchange of the fused salt after described heating in described heat transfer zone and described vapour generator, heating cold water;
S203, the water after heating generates steam and is delivered to described steam distributor by the vapour outlet of described vapour generator.
In the present embodiment, the heat exchange scheme adopting single tank built-in, the fused salt of heating flows in fused salt tank, also in fused salt tank, realize the heat exchange between vapour generator, effectively save steel plate materials and lagging material, reduced cost, and can effectively prevent fused salt from solidifying and the blocking of pipeline. And the pump for liquid salts in the present invention only does fused salt circulatory function, reduce control accuracy requirement, decrease the number of applications of high temperature instrument and valve.
Below the know-why of the present invention is described in conjunction with specific embodiments. These descriptions are the principle in order to explain the present invention, and can not be interpreted as limiting the scope of the invention by any way. Based on explanation herein, the technician of this area does not need to pay other embodiment that creative work can associate the present invention, and these modes all will fall within protection scope of the present invention.
Claims (10)
1. the built-in heat exchange paddy electricity steam boiler of single tank of a fused salt storage heat, it is characterized in that, comprise fused salt tank (1), electric heater (2) and vapour generator (3), described electric heater (2) is arranged at the inner electrically heated district (4) of described fused salt tank (1), described vapour generator (3) is arranged at the inner heat transfer zone (5) of described fused salt tank (1), fused salt in described fused salt tank (1) flows to described heat transfer zone (5) described electrically heated district (4) after described electric heater (2) heats, realize heat release, fused salt after cooling is circulated to described electrically heated district (4) by fused salt transmission pipeline (6).
2. paddy according to claim 1 electricity steam boiler, it is characterized in that, described fused salt tank (1) also comprises cold zone (7) and low temperature suction district (8), described cold zone (7), electrically heated district (4), heat transfer zone (5) and low temperature suction district (8) divide successively by the flow direction of fused salt, and described low temperature suction district (8) is connected by pump for liquid salts (9) and fused salt transmission pipeline (6) with described cold zone (7).
3. paddy according to claim 2 electricity steam boiler, it is characterized in that, the first dividing plate (10) it is provided with between described cold zone (7) and electrically heated district (4), it is provided with second partition (11) between described electrically heated district (4) and heat transfer zone (5), the 3rd dividing plate (12) it is provided with between described heat transfer zone (5) and low temperature suction district (8), described first dividing plate (10) forms fused salt flow passage with the top of described fused salt tank (1), described second partition (11) forms fused salt flow passage with the top of described fused salt tank (1), described 3rd dividing plate (12) forms fused salt flow passage with the bottom of described fused salt tank (1).
4. paddy according to claim 1 electricity steam boiler, it is characterized in that, also comprise water tank (13) and service pump (14), the water outlet of described service pump (14) connects the cooling water inlet of described vapour generator (3) by inlet channel, the water-in of described service pump (14) connects the water outlet of described water tank (13), the water-in of described water tank (13) is connected with water supply pipe (15), is provided with water treating device (16) in described water supply pipe (15).
5. paddy according to claim 1 electricity steam boiler, it is characterised in that, the vapour outlet of described vapour generator (3) connects steam distributor (17) by steam-pipe, connects feed-water valve (18) by inlet channel.
6. paddy according to claim 4 electricity steam boiler, it is characterised in that, also comprise retrieving arrangement, described retrieving arrangement is connected with described water tank (13) by recovery channel (23).
7. paddy according to claim 2 electricity steam boiler, it is characterized in that, also comprise the first thermometer (19), 2nd thermometer (20), 3rd thermometer (21) and the 4th thermometer (22), the temperature detecting unit of described first thermometer (19) is positioned at described cold zone (7), the temperature detecting unit of described 2nd thermometer (20) is positioned at described electrically heated district (4), the temperature detecting unit of described 3rd thermometer (21) is positioned at described heat transfer zone (5), the temperature detecting unit of described 4th thermometer (22) is positioned at described low temperature suction district (8).
8. paddy according to claim 1 electricity steam boiler, it is characterised in that, described fused salt is quartz sand composite fused salt.
9. the method for a fused salt heat storage and exchange, it is characterised in that, comprising:
There is provided single tank of a kind of fused salt storage heat built-in heat exchange paddy electricity steam boiler, comprise fused salt tank (1), electric heater (2) and vapour generator (3), described electric heater (2) is arranged at the inner electrically heated district (4) of described fused salt tank (1), and described vapour generator (3) is arranged at the inner heat transfer zone (5) of described fused salt tank (1);
Fused salt in described fused salt tank (1) flows to described heat transfer zone (5) described electrically heated district (4) after described electric heater (2) heats;
Fused salt after heating is in described heat transfer zone (5) and described vapour generator (3) heat exchange, it is achieved heat release, and the fused salt after cooling is circulated to described electrically heated district (4) by fused salt transmission pipeline (6).
10. method according to claim 9, it is characterised in that, store up exothermic heat by fused salt and prepare steam, comprising:
Cold water is pumped the cooling water inlet to described vapour generator (3) by inlet channel by service pump (14);
The cold water heat exchange of fused salt after described heating in described heat transfer zone (5) with described vapour generator (3), heating cold water;
Water after heating generates steam and is delivered to described steam distributor (17) by the vapour outlet of described vapour generator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610168132.4A CN105627276B (en) | 2016-03-23 | 2016-03-23 | 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 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610168132.4A CN105627276B (en) | 2016-03-23 | 2016-03-23 | 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 |
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| CN105627276A true CN105627276A (en) | 2016-06-01 |
| CN105627276B CN105627276B (en) | 2018-08-28 |
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Cited By (5)
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| CN107062183A (en) * | 2017-06-12 | 2017-08-18 | 黄善清 | A kind of single tank fused salt Heat storage type electric steam boilers |
| CN108168073A (en) * | 2018-01-22 | 2018-06-15 | 无锡恒业电热电器有限公司 | Heat accumulating type wind tunnel experiment electricity heating device system |
| CN108758586A (en) * | 2018-07-18 | 2018-11-06 | 深圳市爱能森设备技术有限公司 | A kind of clean energy resource energy storage steam generating system |
| CN110186025A (en) * | 2019-04-23 | 2019-08-30 | 李渊 | A kind of fused salt electric heat storage boiler |
| CN114251642A (en) * | 2021-11-30 | 2022-03-29 | 碳中和绿色建筑科技(苏州)有限公司 | Fused salt heat storage and exchange system |
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| DE102010010276A1 (en) * | 2010-03-07 | 2011-09-08 | Schatz Thermo System Gmbh | Heat accumulator for exchanging cold and hot coolant i.e. cooling water, in combustion engine i.e. piston-type combustion engine of motor car, has drain pipe ending in proximity of wall so that sufficient over flow cross-section is formed |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107062183A (en) * | 2017-06-12 | 2017-08-18 | 黄善清 | A kind of single tank fused salt Heat storage type electric steam boilers |
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| CN110186025A (en) * | 2019-04-23 | 2019-08-30 | 李渊 | A kind of fused salt electric heat storage boiler |
| CN114251642A (en) * | 2021-11-30 | 2022-03-29 | 碳中和绿色建筑科技(苏州)有限公司 | Fused salt heat storage and exchange system |
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|---|---|
| CN105627276B (en) | 2018-08-28 |
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