Utility model content
In order to solve the problems of the prior art, the utility model provides a kind of paddy electric hot water of Molten Salt Heat Transfer heat accumulation, has the advantages such as energy storage efficiency is high, good in economic efficiency, energy-conserving and environment-protective.
A paddy electric hot water for Molten Salt Heat Transfer heat accumulation, is characterized in that comprising electric heating energy-storage device, heat exchanger, low-temperature molten salt tank and heat transfer medium pipeline;
Described electric heating energy-storage device comprises heating and high temperature melting salt cellar, and described heating was opened in the paddy electricity period;
The direction that described heat transfer medium pipeline communication high temperature melting salt cellar, heat exchanger, low-temperature molten salt tank and heat transfer medium can arrive high temperature melting salt cellar according to high temperature melting salt cellar, heat exchanger, low-temperature molten salt tank wherein again circulates;
Heat-retaining mass in described heat transfer medium and high temperature melting salt cellar is fused salt;
Described heat exchanger comprises water inlet and delivery port.
Preferred described heating adopts electric tracing, and described electric tracing is wound in outside described high temperature melting salt cellar.
Preferred described heat transfer medium is flowed in heat transfer medium pipeline by circulating pump.
The water inlet of preferred described heat exchanger is communicated with water treatment facilities.
Preferred described fused salt is quartz sand composite fused salt.
The utility model technique effect:
The utility model can in the paddy electricity period, by heating heating electric heating energy-storage device, preferred employing electric tracing heating fused salt, part heat heats heat transfer medium fused salt and heat transfer medium fused salt enters heat exchanger for heating generation hot water by heat transfer pipe, and another part heat is absorbed storage by heat accumulation fused salt.Heat transfer medium after release heat energy can enter low-temperature molten salt tank storage and deposits, and under the power of circulating pump, gets back to electric heating energy-storage device start next circulation.After the paddy electricity period has crossed, disconnect heating, the heat stored by energy storage device can be used to heat heat transfer medium, is entered heat exchanger produce hot water by the heat transfer medium that energy storage molten salt heats.
Described energy-accumulating medium and heat transfer medium preferably adopt quartz sand composite fused salt, in special the utility model, the preferred quartz sand composite fused salt of institute is selected from quartz sand composite fused salt described in number of patent application 201310732738.2,201310040070.5 and 201310040909.5.Its serviceability temperature is high, and efficiency is high, and cost is low.
Described low-temperature molten salt tank can buffer system pressure oscillation while storage heat transfer medium fused salt, play the effect of voltage stabilizing off-load, when in system, heat transfer medium fused salt slightly changes, the pressure stability of system can be ensured, pump can not be opened frequently because of the change of pressure, improve the security of system and the service life of equipment.
Described preheater water inlet is connected with water treatment facilities, can carry out the operation such as deoxygenation, desalination, ensures feed water quality, makes the pipeline of boiler flow passage component and heat-exchange system and equipment from corrosion, increases the service life.
The utility model make use of cheap paddy electrical heating on the one hand and uses in the peak electricity time, good in economic efficiency, energy-conserving and environment-protective, fused salt heat accumulation is utilized to conduct heat on the other hand, fused salt serviceability temperature is high, energy storage efficiency is high, and heat accumulation ensures that the heating load heating that in the paddy electricity cycle in 24 hours, sustainable utilization paddy electricity provides produces hot water.
Detailed description of the invention
In order to better explain the utility model, below in conjunction with embodiment, the utility model is further explained.
The paddy electric hot water of the Molten Salt Heat Transfer heat accumulation of the present embodiment, comprises electric heating energy-storage device, heat exchanger 4, low-temperature molten salt tank 3 and heat transfer medium pipeline 7.Described electric heating energy-storage device is the high temperature melting salt cellar 2 that outside is wound with electric tracing 1.Inner and the heat transfer medium pipeline 7 of high temperature melting salt cellar 2 and low-temperature molten salt tank 3 built with the quartz sand composite fused salt described in being selected from number of patent application 201310732738.2,201310040070.5 or 201310040909.5 respectively as heat-retaining mass and heat transfer medium; Described heat exchanger 4 comprises water inlet 5 and delivery port 6; Described heat transfer medium pipeline 7 is communicated with high temperature melting salt cellar 2, heat exchanger 4 and low-temperature molten salt tank 3, by the circulating pump 8 that is arranged on heat transfer medium pipeline 7 high temperature melting salt cellar 2, between low-temperature molten salt tank 3 and heat exchanger 4 along direction of arrow flowing in Fig. 1.Water inlet 5 is connected with water treatment facilities 9, can carry out the operation such as deoxygenation, desalination.
The present embodiment is in the paddy electricity period, and heat high temperature melting salt cellar 2 by electric tracing 1, a part of heat enters heat exchanger 4 for heating generation hot water with heat transfer medium fused salt by heat transfer pipe 7, and another part heat is absorbed storage by energy storage molten salt.Fused salt after exchange heat can enter low-temperature molten salt tank 3 and store further, and gets back to electric heating energy-storage device under the power of circulating pump.After the paddy electricity period has crossed, disconnect electric tracing 1, the heat stored by energy storage device can be used to heat heat transfer medium, and heat transfer medium enters heat exchanger 4 can be continued to produce hot water.
The present embodiment make use of cheap paddy electrical heating on the one hand and uses in the peak electricity time, thus realize effect that is good in economic efficiency, energy-conserving and environment-protective, quartz sand composite fused salt heat accumulation is utilized to conduct heat on the other hand, serviceability temperature is high, energy storage efficiency is high, heat is not wasted, and heat accumulation ensures that the heating load heating that in the paddy electricity cycle in 24 hours, sustainable utilization paddy electricity provides produces hot water.
The above detailed description of the invention can make those skilled in the art's comprehend the utility model; but limit the claimed scope of the utility model never in any form; all do not depart from technical scheme and the improvement thereof of the spirit and scope of this patent; such as other Electric heating; the valve etc. of the various adjustment flow of transmission medium install pipeline; etc. condition, as long as meet spirit of the present utility model, it is all encompassed in the middle of the protection domain of this patent.