CN107559930B - Fused salt list tank electric heating accumulation of heat heating system and application method - Google Patents
Fused salt list tank electric heating accumulation of heat heating system and application method Download PDFInfo
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- CN107559930B CN107559930B CN201710948979.9A CN201710948979A CN107559930B CN 107559930 B CN107559930 B CN 107559930B CN 201710948979 A CN201710948979 A CN 201710948979A CN 107559930 B CN107559930 B CN 107559930B
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Abstract
The invention discloses fused salt list tank electric heating accumulation of heat heating system and application methods, comprising: fused salt heat storage can；The top of fused salt heat storage can is equipped with high-temperature molten salt entrance, and lower part is equipped with low-temperature molten salt entrance；Fused salt heat storage can is equipped with low-temperature molten salt pump and high-temperature melting salt pump；The outlet of low-temperature molten salt pump is connected with the fused salt entrance of fused salt electric heater, and the outlet of fused salt electric heater is connected with the fused salt side entrance of high-temperature molten salt entrance, heat exchanger respectively, and fused salt electric heater is connected with power supply；The outlet of high-temperature melting salt pump is connected with the fused salt side entrance of heat exchanger, and the fused salt side outlet of heat exchanger is connected with low-temperature molten salt entrance, and the water side of heat exchanger is connected with heat user.The present invention using fused salt as accumulation of heat heat release medium, it is nontoxic, it is cheap and easy to get；Accumulation of heat is carried out using " the rubbish electricity " that light is abandoned in trough-electricity, abandonment, power grid peak-valley difference can be substantially cut down, improve fired power generating unit actual operating efficiency, enhance the ability to transmit electricity of power grid, improve renewable energy utilization efficiency.
Description
Technical field
The present invention relates to fused salt heating technology fields more particularly to a kind of use fused salt as heat storage medium, utilizes low ebb
" the rubbish electricity " that light is abandoned in electricity or abandonment carries out heating fused salt and realizes building heating, supplying hot water or provide the fused salt of steam for industry
Single tank electric heating accumulation of heat heating system and application method.
Background technique
In recent years, haze problem causes the unprecedented concern of people, and a large amount of winter heating fire coals are haze serious one
Main cause.For this purpose, country, which has put into effect a series of coal, changes electric policy, corresponding subsidy has also been put into effect in each city, area's finance respectively
Policy encourages society using electricity heating to replace coal heating, alleviates current haze situation.But if daytime directly utilizes electricity
Heating installation will certainly aggravate network load, increase power grid peak-valley difference, threaten to power grid security.It, will using heat storage technology
" the rubbish electricity " that light is abandoned in the trough-electricity in evening or abandonment stores building heating, heat supply for daytime by electric heat storage
Water or industry not only can substantially cut down power grid peak-valley difference for steam, improve fired power generating unit actual operating efficiency, enhance power grid
Ability to transmit electricity, and the utilization efficiency of renewable energy can be improved, alleviate the haze problem in the Heating Season north.
Double tank fused salt low ebb electric heating central heating systems are generallyd use currently on the market, it is required that each tank body can store up
All heat storage mediums in deposit system cause a part of tank body space not to be utilized.Compared to double can system, fused salt list tank electricity
Heat storage heating system not only reduces a heat storage can, also has structure simple, compact, easy to use, maintenance cost is low
The advantages that, therefore there is better economic performance.
Summary of the invention
Aiming at the shortcomings existing in the above problems, the present invention provides fused salt list tank electric heating accumulation of heat heating system and makes
With method, meet the technical requirements of fused salt trough-electricity heating, and reduces initial cost to a greater extent, reduces maintenance cost.
To achieve the above object, the present invention provides a kind of fused salt list tank electric heating accumulation of heat heating system, comprising: fused salt heat accumulation
Tank；
The top of the fused salt heat storage can is equipped with high-temperature molten salt entrance, and lower part is equipped with low-temperature molten salt entrance；The fused salt storage
Hot tank is equipped with the low-temperature molten salt for extracting fused salt heat storage can lower part low-temperature molten salt and pumps and for extracting fused salt heat storage can top
The high-temperature melting salt pump of high-temperature molten salt；The outlet of the low-temperature molten salt pump is connected with the fused salt entrance of fused salt electric heater, described molten
The fused salt outlet of salt electric heater is connected with the fused salt side entrance of the high-temperature molten salt entrance, heat exchanger respectively, the fused salt electricity
Heater is connected with power supply；The outlet of the high-temperature melting salt pump is connected with the fused salt side entrance of heat exchanger, and the heat exchanger melts
Salt side outlet is connected with the low-temperature molten salt entrance, and the water side of the heat exchanger is connected with heat user.
As a further improvement of the present invention, the high-temperature molten salt entrance is arranged in the upper of the fused salt heat accumulation pot sidewall
Portion, the low-temperature molten salt entrance are arranged in the lower part of the fused salt heat accumulation pot sidewall, the low-temperature molten salt pump and high-temperature melting salt pump
It is arranged in the top of the fused salt heat storage can；
The suction inlet of low-temperature molten salt pump is placed in the lower part of the fused salt heat storage can, the outlet of the low-temperature molten salt pump with
The fused salt entrance of the fused salt electric heater is connected, and the fused salt outlet of the fused salt electric heater connects with the first of accumulation of heat tee tube
Mouth is connected, and the second interface of the accumulation of heat tee tube is connected with the high-temperature molten salt entrance, and the third of the accumulation of heat tee tube connects
Mouth is connected with the first interface of heating tee tube；
The suction inlet of the high-temperature melting salt pump is placed in the top of the fused salt heat storage can, the outlet of the high-temperature melting salt pump with
The second interface of the heating tee tube is connected, the third interface of the heating tee tube and the fused salt side entrance of the heat exchanger
It is connected, the fused salt side outlet of the heat exchanger is connected with the low-temperature molten salt entrance, and the water side entrance of the heat exchanger and heat are used
The water out at family is connected, and the water side outlet of the heat exchanger is connected with the water inlet of heat user.
As a further improvement of the present invention, the heat exchanger is that fused salt-water- to-water heat exchanger or the fused salt-steam being connected in series change
Hot device and steaming steam water heat exchanger, the heat user are that municipal pipeline hot-water heating system, building heating system or the steam of industry are used
Family.
As a further improvement of the present invention, the power supply is " the rubbish electricity " that light is abandoned in trough-electricity or abandonment.
As a further improvement of the present invention, the top of the fused salt heat storage can is equipped with fused salt charging port, the fused salt storage
It is the electric heater unit of liquid that the bottom of hot tank, which is equipped with for heating fused salt and maintaining fused salt,.
As a further improvement of the present invention, the electric heater unit is cylindrical electrically heated rod, spiral coil electric heating
Device or heat tape, the heating method of the electric heater unit are to be immersed in fused salt heat storage can to directly heat mode or installation
Indirect heating manner on the outside of fused salt heat storage can.
As a further improvement of the present invention, it is equipped with high-temperature molten salt diffuser in the fused salt heat storage can and low-temperature molten salt expands
Dissipate device；
The high-temperature molten salt diffuser is placed in fused salt heat storage can top, the high-temperature molten salt diffuser and the high temperature
Fused salt entrance is connected；
The low-temperature molten salt diffuser is placed in fused salt heat storage can lower part, the low-temperature molten salt diffuser and the low temperature
Fused salt entrance is connected.
As a further improvement of the present invention, the high-temperature molten salt diffuser is radial collar plate shape fused salt diffuser, illiciumverum
Type fused salt diffuser or H-type fused salt diffuser, the low-temperature molten salt diffuser are molten for radial collar plate shape fused salt diffuser, octagon
Salt diffuser or H-type fused salt diffuser.
The present invention also provides a kind of application methods of fused salt list tank electric heating accumulation of heat heating system, comprising: heat-accumulating process and
Heat supplying process；
Heat-accumulating process:
The low-temperature molten salt of fused salt heat storage can lower part is extracted out using low-temperature molten salt pump, is transported in fused salt electric heater, melts
Low-temperature molten salt is heated into high-temperature molten salt, a part of high temperature melting using " the rubbish electricity " that light is abandoned in trough-electricity or abandonment by salt electric heater
Salt enters fused salt heat storage can by high-temperature molten salt entrance and stores, and another part high-temperature molten salt enters heat exchanger, by cold water
Heating generates hot water as heat user heating；
Heat supplying process:
In peak times of power consumption on daytime, the high-temperature molten salt in fused salt heat storage can will be stored in using high-temperature melting salt pump and is stored up from fused salt
Hot tank top extraction, is transported in heat exchanger, cold water is heated, and generates hot water as heat user heating；Low-temperature molten salt after heat release
Then fused salt heat storage can is returned from low-temperature molten salt entrance.
Compared with prior art, the invention has the benefit that
The present invention using fused salt as accumulation of heat heat release medium, it is nontoxic, it is cheap and easy to get；Light is abandoned using trough-electricity, abandonment
" rubbish electricity " carry out accumulation of heat, can substantially cut down power grid peak-valley difference, improve fired power generating unit actual operating efficiency, enhance power grid
Ability to transmit electricity improves renewable energy utilization efficiency；Coal heating is replaced using electricity heating, haze problem can be alleviated；
Fused salt list tank electric heating accumulation of heat heating system structure of the invention is simple, compact, cost is lower；With double tank heat-storings
Heating system is compared, only one storage tank reduces initial cost, while reducing maintenance cost.
Detailed description of the invention
Fig. 1 is the structure chart of fused salt list tank electric heating accumulation of heat heating system disclosed in the embodiment of the present invention 1；
Fig. 2 is the structure chart of fused salt list tank electric heating accumulation of heat heating system disclosed in the embodiment of the present invention 2；
Fig. 3 is the structure chart of fused salt list tank electric heating accumulation of heat heating system disclosed in the embodiment of the present invention 3；
Fig. 4 is the structure chart of fused salt list tank electric heating accumulation of heat heating system disclosed in the embodiment of the present invention 4；
Fig. 5 is the structure chart of Fig. 4 high temperature fused salt diffuser or low-temperature molten salt diffuser.
In figure:
10, fused salt heat storage can；11, high-temperature molten salt entrance；12, low-temperature molten salt entrance；13, fused salt charging port；14, electric heating
Device；15, high-temperature molten salt diffuser；16, low-temperature molten salt diffuser；20, low-temperature molten salt pumps；30, high-temperature melting salt pump；40, fused salt
Electric heater；50, power supply；60, fused salt-water- to-water heat exchanger；61, fused salt-vapor heat exchanger；62, steam water heat exchanger is steamed；70, heat is used
Family；80, accumulation of heat tee tube；90, heat tee tube.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " installation ",
" connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, can also indirectly connected through an intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood with concrete condition
Concrete meaning in the present invention.
The present invention is described in further detail with reference to the accompanying drawing:
Embodiment 1:
As shown in Figure 1, the present invention provides a kind of fused salt list tank electric heating accumulation of heat heating system, comprising: fused salt heat storage can 10,
Electric heater unit 14, low-temperature molten salt pump 20, high-temperature melting salt pump 30, fused salt electric heater 40, power supply 50, heat exchanger and heat user
70, the heat exchanger of the embodiment selects fused salt-water- to-water heat exchanger 60, and fused salt-water- to-water heat exchanger 60 includes fused salt side and water side, fused salt side
Fused salt side entrance and fused salt side outlet including fused salt-water- to-water heat exchanger 60, water side include the water side entrance of fused salt-water- to-water heat exchanger 60
With water side outlet；Wherein:
It is molten that other heat storage medium replacements can also be used for storing heat storage medium fused salt in fused salt heat storage can 10 of the invention
Salt；It is corresponding to be equipped with fused salt charging port 13 on 10 top of fused salt heat storage can or side wall；The top of fused salt heat storage can 10 of the present invention
(top of 10 side wall of fused salt heat storage can, as shown in Figure 1) is equipped with high-temperature molten salt entrance 11, and lower part be (10 side wall of fused salt heat storage can
Lower part, as shown in Figure 1) it is equipped with low-temperature molten salt entrance 12, the design of above-mentioned fused salt entrance can largely reduce high/low temperature
Mixing between fused salt.Meanwhile it is liquid that the bottom of fused salt heat storage can 10 of the present invention, which is equipped with for heating fused salt and maintaining fused salt,
Electric heater unit 14, electric heater unit 14 for irregularly maintain fused salt heat storage can 10 in fused salt be in liquid always.
(top) is equipped with the low temperature for extracting 10 lower part low-temperature molten salt of fused salt heat storage can on fused salt heat storage can 10 of the present invention
The suction inlet of pump for liquid salts 20, low-temperature molten salt pump 20 is placed in lower section fused salt heat storage can 10 inside, the outlet of low-temperature molten salt pump 20 and
The fused salt entrance of fused salt electric heater 40 is connected, the first interface of the fused salt outlet and accumulation of heat tee tube 80 of fused salt electric heater 40
It is connected, the second interface of accumulation of heat tee tube 80 is connected with high-temperature molten salt entrance 11, the third interface of accumulation of heat tee tube 80 and heating
The first interface of tee tube 90 is connected.Fused salt electric heater 40 is connected with power supply 50, power supply 50 be night utility grid trough-electricity or
" the rubbish electricity " of light is abandoned in abandonment.Fused salt electric heater 40 will be melted using " the rubbish electricity " that light is abandoned in night utility grid trough-electricity or abandonment
Salt heat storage can 10 is heated to high-temperature molten salt from the low-temperature molten salt that lower part is extracted out, and a part is back to molten by high-temperature molten salt entrance 11
Stored in salt heat storage can 10, another part enters fused salt-water- to-water heat exchanger 60, cold water is heated, for heat user heat, also for
Hot water or steam.
(top) is equipped with the high temperature for extracting 10 upper pyrometer fused salt of fused salt heat storage can on fused salt heat storage can 10 of the present invention
Pump for liquid salts 30, the suction inlet of high-temperature melting salt pump 30 are placed in the top inside fused salt heat storage can 10, the outlet of high-temperature melting salt pump 30 with
The second interface of heating tee tube 90 is connected, and the third interface of heating tee tube 90 and the fused salt side of fused salt-water- to-water heat exchanger 60 enter
Mouth is connected, and the fused salt side outlet of fused salt-water- to-water heat exchanger 60 is connected with low-temperature molten salt entrance 11, the water side of fused salt-water- to-water heat exchanger 60
Entrance, water side outlet and the water inlet of heat user 70, water out are corresponding connected；I.e. the water side entrance of fused salt-water- to-water heat exchanger 60 with
The water out of heat user 70 is connected, and the water side outlet of fused salt-water- to-water heat exchanger 60 is connected with the water inlet of heat user 70；High-temperature molten salt
Water is transferred heat to by fused salt-water- to-water heat exchanger 60, supplies heat user 70 after water heating, the fused salt after cooling passes through low
Temperature molten salt entrance 12 returns to fused salt tank 10.Wherein, fused salt-water- to-water heat exchanger 60 can produce water, also can produce steam；Heat user
70 can be heavy civil pipeline hot-water heating system, can also can also be the steam user of industry with building heating system；Accumulation of heat
On tee tube 80 to the pipeline between high-temperature molten salt entrance 11, accumulation of heat tee tube 80 to heating tee tube 90 between pipeline on,
Controlled valve is equipped on high-temperature melting salt pump 30 to the pipeline between heating tee tube 90.
Preferably, electric heater unit 14 of the invention is arranged in the bottom of fused salt heat storage can 10, and form can be cylinder
Shape electrically heated rod, spiral coil electric heater or heat tape.The heating method of electric heater unit 14, which can be, is immersed in fused salt
Mode is directly heated in heat storage can, is also possible to be mounted on the indirect heating manner on the outside of fused salt heat storage can.
Preferably, the outer surface of fused salt heat storage can 10 of the invention is equipped with insulating layer, the connecting pipe between each device
Carry out isothermal holding.
A kind of application method of fused salt list tank electric heating accumulation of heat heating system of the present invention, comprising: fused salt doses process, accumulation of heat
Process and heat supplying process；
Fused salt doses process:
Solid-state fused salt is melted from the fused salt charging port 13 for being arranged in 10 top of fused salt heat accumulation tank body and is filled with fused salt heat storage can
In 10；
Heat-accumulating process:
Using low-temperature molten salt pump 20 by (150 DEG C or so) of low-temperature molten salt extractions of 10 lower part of fused salt heat storage can, it is transported to molten
In salt electric heater 40, low-temperature molten salt is heated into height using " the rubbish electricity " that light is abandoned in trough-electricity or abandonment by fused salt electric heater 40
Temperature molten salt (400 DEG C), high-temperature molten salt a part after the heating of fused salt electric heater 40 are entered molten by high-temperature molten salt entrance
Salt heat storage can 10 stores, and another part enters fused salt-water- to-water heat exchanger 60, and cold water is heated, for heat user heating, heat supply
Water or steam；
Heat supplying process:
In the peak of power consumption period on daytime, the high temperature melting that will be returned to after heating in fused salt heat storage can 10 by high-temperature melting salt pump 30
Salt extraction is transported to fused salt-water- to-water heat exchanger 60, and the water at low temperature at 70 end of heat user is heated to be heat user heating, supplying hot water or steaming
Vapour.Low-temperature molten salt (150 DEG C or so) after heat release then returns to fused salt heat storage can 10 from low-temperature molten salt entrance 12.
Embodiment 2:
As shown in Fig. 2, the present invention provides a kind of fused salt list tank electric heating accumulation of heat heating system, it is similar to Example 1, only
It is the pipeline that the outlet of fused salt electric heater is omitted and is connected with the fused salt entrance of heat exchanger, other structures are same as Example 1.
Specifically:
(top) is equipped with the low temperature for extracting 10 lower part low-temperature molten salt of fused salt heat storage can on fused salt heat storage can 10 of the present invention
The suction inlet of pump for liquid salts 20, low-temperature molten salt pump 20 is placed in lower section fused salt heat storage can 10 inside, the outlet of low-temperature molten salt pump 20 and
The fused salt entrance of fused salt electric heater 40 is connected, and the fused salt outlet of fused salt electric heater 40 is connected with high-temperature molten salt entrance 11, melts
Salt electric heater 40 is connected with power supply 50；Power supply 50 is " the rubbish electricity " that light is abandoned in night utility grid trough-electricity or abandonment, fused salt electricity
Heater 40 is extracted fused salt heat storage can 10 out from lower part using " the rubbish electricity " of night utility grid trough-electricity or abandonment abandoning light low
Temperature molten salt is heated to high-temperature molten salt, and the top of fused salt heat storage can 10 is all back to by high-temperature molten salt entrance 11.
(top) is equipped with the high temperature for extracting 10 upper pyrometer fused salt of fused salt heat storage can on fused salt heat storage can 10 of the present invention
Pump for liquid salts 30, the suction inlet of high-temperature melting salt pump 30 are placed in the top inside fused salt heat storage can 10, the outlet of high-temperature melting salt pump 30 with
The fused salt side entrance of fused salt-water- to-water heat exchanger 60 is connected, fused salt side outlet and 12 phase of low-temperature molten salt entrance of fused salt-water- to-water heat exchanger 60
Even, high-temperature molten salt transfers heat to water by fused salt-water- to-water heat exchanger 60, heat user 70 is supplied after water heating, after cooling
Fused salt returns to fused salt tank 10 by low-temperature molten salt entrance 12.Wherein, fused salt-water- to-water heat exchanger 60 can produce water, also can produce
Steam；Heat user 70 can be heavy civil pipeline hot-water heating system, can also can also be the steaming of industry with building heating system
Vapour user.
The present invention provides a kind of application method of fused salt list tank electric heating accumulation of heat heating system, comprising: fused salt dose process,
Heat-accumulating process and heat supplying process；
Fused salt doses process:
Solid-state fused salt is melted from the fused salt charging port 13 for being arranged in 10 top of fused salt heat accumulation tank body and is filled with fused salt heat storage can
In 10；
Heat-accumulating process:
The low-temperature molten salt of 10 lower part of fused salt heat storage can is extracted out using low-temperature molten salt pump 20, is transported to fused salt electric heater 40
In, low-temperature molten salt is heated into high-temperature molten salt using " the rubbish electricity " that light is abandoned in trough-electricity or abandonment by fused salt electric heater 40, is passed through
High-temperature molten salt after the heating of fused salt electric heater 40 all passes through high-temperature molten salt entrance 11 and is transmitted back to fused salt heat storage can 10；
Heat supplying process:
The high-temperature molten salt extraction returned in fused salt heat storage can 10 after heating is transported to fused salt-water by high-temperature melting salt pump 30
The water at low temperature heating at 70 end of heat user is generated high-temperature water, distributes to each heat user, complete heating by heat exchanger 60；After heat release
Low-temperature molten salt then from low-temperature molten salt entrance 12 return fused salt heat storage can 10.
Embodiment 3:
As shown in figure 3, the present invention provides a kind of fused salt list tank electric heating accumulation of heat heating system, it is similar to Example 1, only
It is that fused salt-water- to-water heat exchanger 60 has been changed into the fused salt-vapor heat exchanger 61 being connected in series and steaming steam water heat exchanger 62, fused salt-steam
Heat exchanger 61 with heating tee tube 90 third interface be connected, steaming steam water heat exchanger 62 be connected with heat user 70, other structures and
Application method is same as Example 1.This embodiment increases a heat transfer process, can reduce temperature difference of heat exchanger, increase heat exchange
The service life of device is conducive to the safe operation of system.
Embodiment 4:
As shown in figure 4, the present invention provides a kind of fused salt list tank electric heating accumulation of heat heating system, it is similar to Example 1, only
It is to add high and low temperature fused salt diffuser in high and low temperature fused salt entrance, reduces when fused salt enters tank body to molten inside fused salt heat storage can
The disturbance of salt；Other structures and application method are same as Example 1.Specifically:
The present invention is equipped with high-temperature molten salt diffuser 15 and low-temperature molten salt diffuser 16 in fused salt heat storage can, and high-temperature molten salt expands
It dissipates device 15 and is placed in 10 top of fused salt heat storage can, high-temperature molten salt diffuser 15 is connected with high-temperature molten salt entrance 11；Low-temperature molten salt diffusion
Device 16 is placed in 10 lower part of fused salt heat storage can, and low-temperature molten salt diffuser 16 is connected with low-temperature molten salt entrance 12.
The form of high and low temperature fused salt diffuser of the present invention is not limited to the radial collar plate shape fused salt diffuser gone out given in Fig. 5,
It can also be octagon fused salt diffuser, H-type fused salt diffuser.
The present invention forms tank bottom low-temperature molten salt → fused salt electric heater by fused salt electric heater and fused salt heat storage can and heats
The circulation of → tank deck high-temperature molten salt, reduction are back to existing high-temperature molten salt in the low-temperature molten salt and tank body of tank body after heat release and produce
Life blends and causes energy loss.
The present invention using fused salt as accumulation of heat heat release medium, it is nontoxic, it is cheap and easy to get；Light is abandoned using trough-electricity, abandonment
" rubbish electricity " carry out accumulation of heat, can substantially cut down power grid peak-valley difference, improve fired power generating unit actual operating efficiency, enhance power grid
Ability to transmit electricity improves renewable energy utilization efficiency；Coal heating is replaced using electricity heating, haze problem can be alleviated.
Fused salt list tank electric heating accumulation of heat heating system structure of the invention is simple, compact, cost is lower；With double tank heat-storings
Heating system is compared, only one storage tank reduces initial cost, while reducing maintenance cost.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of fused salt list tank electric heating accumulation of heat heating system characterized by comprising fused salt heat storage can；
The top of the fused salt heat storage can is equipped with high-temperature molten salt entrance, and lower part is equipped with low-temperature molten salt entrance；The fused salt heat storage can
The low-temperature molten salt for extracting fused salt heat storage can lower part low-temperature molten salt is equipped with to pump and for extracting fused salt heat storage can upper pyrometer
The high-temperature melting salt pump of fused salt；The top of the fused salt heat storage can is equipped with fused salt charging port, and the bottom of the fused salt heat storage can is equipped with
It is the electric heater unit of liquid for heating fused salt and maintaining fused salt；
The outlet of the low-temperature molten salt pump is connected with the fused salt entrance of fused salt electric heater, the outlet point of the fused salt electric heater
It is not connected with the fused salt side entrance of the high-temperature molten salt entrance, heat exchanger, the fused salt electric heater is connected with power supply；The height
The outlet of temperature molten salt pump is connected with the fused salt side entrance of heat exchanger, and fused salt side outlet and the low-temperature molten salt of the heat exchanger enter
Mouth is connected, and the water side of the heat exchanger is connected with heat user；
High-temperature molten salt diffuser and low-temperature molten salt diffuser are equipped in the fused salt heat storage can；
The high-temperature molten salt diffuser is placed in fused salt heat storage can top, the high-temperature molten salt diffuser and the high-temperature molten salt
Entrance is connected；The low-temperature molten salt diffuser is placed in fused salt heat storage can lower part, the low-temperature molten salt diffuser with it is described low
Temperature molten salt entrance is connected；
The high-temperature molten salt entrance is arranged in the top of the fused salt heat accumulation pot sidewall, and the low-temperature molten salt entrance is arranged in described
The lower part of fused salt heat accumulation pot sidewall, the low-temperature molten salt pump and high-temperature melting salt pump are arranged in the top of the fused salt heat storage can；
The suction inlet of low-temperature molten salt pump is placed in the lower part of the fused salt heat storage can, the outlet of the low-temperature molten salt pump with it is described
The fused salt entrance of fused salt electric heater is connected, the first interface phase of the fused salt outlet and accumulation of heat tee tube of the fused salt electric heater
Even, the second interface of the accumulation of heat tee tube is connected with the high-temperature molten salt entrance, the third interface of the accumulation of heat tee tube and
The first interface of heating tee tube is connected；
The suction inlet of the high-temperature melting salt pump is placed in the top of the fused salt heat storage can, the outlet of the high-temperature melting salt pump with it is described
The second interface of heating tee tube is connected, the fused salt side entrance phase of the third interface and the heat exchanger of the heating tee tube
Even, the fused salt side outlet of the heat exchanger is connected with the low-temperature molten salt entrance, the water side entrance of the heat exchanger and heat user
Water out be connected, the water side outlet of the heat exchanger is connected with the water inlet of heat user.
2. fused salt list tank electric heating accumulation of heat heating system as described in claim 1, which is characterized in that the heat exchanger is molten
Salt-water- to-water heat exchanger or the fused salt-vapor heat exchanger being connected in series and steaming steam water heat exchanger, the heat user are municipal pipeline hot water
The steam user of system, building heating system or industry.
3. fused salt list tank electric heating accumulation of heat heating system as described in claim 1, which is characterized in that the power supply is trough-electricity
Or " the rubbish electricity " of light is abandoned in abandonment.
4. fused salt list tank electric heating accumulation of heat heating system as described in claim 1, which is characterized in that the electric heater unit is
The heating method of cylindrical electrically heated rod, spiral coil electric heater or heat tape, the electric heater unit is molten to be immersed in
The indirect heating manner for directly heating mode or be mounted on the outside of fused salt heat storage can in salt heat storage can.
5. fused salt list tank electric heating accumulation of heat heating system as described in claim 1, which is characterized in that the high-temperature molten salt diffusion
Device is that radial collar plate shape fused salt diffuser, octagon fused salt diffuser or H-type fused salt diffuser, the low-temperature molten salt diffuser are
Radial collar plate shape fused salt diffuser, octagon fused salt diffuser or H-type fused salt diffuser.
6. a kind of application method of fused salt list tank electric heating accumulation of heat heating system as described in claim 1, which is characterized in that packet
It includes: heat-accumulating process and heat supplying process；
Heat-accumulating process:
The low-temperature molten salt of fused salt heat storage can lower part is extracted out using low-temperature molten salt pump, is transported in fused salt electric heater, fused salt electricity
Low-temperature molten salt is heated into high-temperature molten salt using " the rubbish electricity " that light is abandoned in trough-electricity or abandonment by heater, and a part of high-temperature molten salt is logical
It crosses high-temperature molten salt entrance and enters fused salt heat storage can and store, another part high-temperature molten salt enters heat exchanger, cold water heated,
Hot water is generated as heat user heating；
Heat supplying process:
In peak times of power consumption on daytime, the high-temperature molten salt in fused salt heat storage can will be stored in from fused salt heat storage can using high-temperature melting salt pump
Top extraction, is transported in heat exchanger, cold water is heated, and generates hot water as heat user heating；Low-temperature molten salt after heat release then from
Low-temperature molten salt entrance returns to fused salt heat storage can.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948979.9A CN107559930B (en) | 2017-10-12 | 2017-10-12 | Fused salt list tank electric heating accumulation of heat heating system and application method |
Applications Claiming Priority (1)
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| CN108007247B (en) * | 2018-01-17 | 2023-06-23 | 东方电气集团东方锅炉股份有限公司 | External heating type molten salt heat storage system |
| CN108954459B (en) * | 2018-05-28 | 2023-04-18 | 北京民利储能技术有限公司 | Fused salt heat storage single-tank heating system |
| CN109059595B (en) * | 2018-10-08 | 2023-11-24 | 临沂智慧新能源科技有限公司 | Fused salt heat accumulation device |
| CN109323320A (en) * | 2018-11-22 | 2019-02-12 | 上海电气集团股份有限公司 | A kind of list tank fused salt heating system |
| CN111059948A (en) * | 2019-12-11 | 2020-04-24 | 北京工业大学 | Single-tank heat storage system with continuously adjustable heat exchanger area |
| CN112082194A (en) * | 2020-09-17 | 2020-12-15 | 东方电气集团东方锅炉股份有限公司 | Single-tank molten salt energy storage and heating system and energy storage and heating method thereof |
| CN113819451B (en) * | 2021-10-15 | 2023-05-30 | 华能(浙江)能源开发有限公司长兴分公司 | System and method for coupling solid thermal storage and steam supply of coal-fired thermal power unit |
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| CN205208693U (en) * | 2015-12-22 | 2016-05-04 | 北京辰威日晟节能科技有限公司 | Water heat accumulation heating system |
| CN107062371A (en) * | 2017-03-15 | 2017-08-18 | 北京万机汇机电工程技术有限公司 | A kind of fused salt thermal storage heating system |
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| CN205208693U (en) * | 2015-12-22 | 2016-05-04 | 北京辰威日晟节能科技有限公司 | Water heat accumulation heating system |
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