CN207212572U - A kind of top pressure power generation system for fused salt solar power tower - Google Patents
A kind of top pressure power generation system for fused salt solar power tower Download PDFInfo
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- CN207212572U CN207212572U CN201720919703.3U CN201720919703U CN207212572U CN 207212572 U CN207212572 U CN 207212572U CN 201720919703 U CN201720919703 U CN 201720919703U CN 207212572 U CN207212572 U CN 207212572U
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Abstract
The utility model discloses a kind of top pressure power generation system for fused salt solar power tower, is related to the design field that the tower photo-thermal power station of fuse salt melts salt system.Low temperature cold melting salt cellar, high Warm Melt salt cellar and the heat dump being arranged between the low temperature cold melting salt cellar and the high Warm Melt salt cellar are specifically included, and the installation site of the heat dump is higher than the installation site of low temperature cold melting salt cellar and the high Warm Melt salt cellar；Also include the turbine-generator units being arranged between the heat dump and the high Warm Melt salt cellar.Impact of the fuse salt to high Warm Melt salt cellar during decline can not only be reduced using the top pressure power generation system, and the potential energy of fuse salt can be reclaimed, and be translated into electric energy, so as to reach the purpose of energy efficiency.
Description
Technical field
The technical field of the tower photo-thermal power station melting salt system of fuse salt is the utility model is related to, more particularly to one kind is used for
The top pressure power generation system of fused salt solar power tower.
Background technology
With the gradual shortage of fossil fuel, renewable energy power generation commercially to occupy ratio also increasing, its
Include solar energy thermal-power-generating.Fused salt tower type solar energy thermal power generation station is by being arranged in the settled date speculum on ground by sunshine
Reflex on heat dump, and solar thermal energy is collected and utilized by the fused salt of liquid.
In the tower photo-thermal power station of fused salt, heat dump is typically mounted on heat absorption top of tower and is used to absorb heliostat reflection
Sunshine heat.When power station is run, heliostat reflexes to the sunshine for inciding its surface the heat dump positioned at tower top, heat absorption
Fused salt in cold tank is sent on heat dump by device circulating pump, absorbs the solar energy that the reflection of solar eyepiece field comes.Fused salt is warm after heat absorption
Degree is heated, and is relied on power for support and returned to by heating salt down-comer in hot salt cellar.The fused salt in hot tank is stored in by steam generator
System circulation is pumped into steam generator system heat exchange, produces high pressure superheated steam to drive Turbo-generator Set to generate electricity, exchanges heat
Fused salt afterwards is flow back into cold tank, carries out next circulation.
During the utility model is realized, designer has found that prior art at least has problems with：Hot melt salt exists
Losses of potential energy during decline is serious, and by taking the photo-thermal power station of 100MW grades as an example, heat dump center absolute altitude is about left in 185m
The right side, and high Warm Melt salt cellar is arranged on zero meter, in 16m or so, fuse salt returns high its top mark height after being absorbed heat in heat dump
The discrepancy in elevation about 169m between Warm Melt salt cellar, so big potential energy are throttled to lose by flow control valve, certainly will cause to provide
The serious waste in source.
Utility model content
In order to solve the above technical problems, the utility model provides a kind of top pressure power generation for fused salt solar power tower
System, the system can reclaim fuse salt potential energy and be translated into electric energy.
A kind of top pressure power generation system for fused salt solar power tower, including low temperature cold melting salt cellar, high temperature hot melt
Melt salt cellar and the heat dump being arranged between the low temperature cold melting salt cellar and the high Warm Melt salt cellar, and the heat absorption
Installation site of the installation site of device higher than low temperature cold melting salt cellar and the high Warm Melt salt cellar；Also include being arranged on
Turbine-generator units between the heat dump and the high Warm Melt salt cellar.
Further, it is provided with sloppy heat in low temperature cold melting salt cellar and melts salt pump.
Further, melted in the low temperature cold and be additionally provided with import surge tank between salt cellar and the heat dump, it is described
Import surge tank is located at the bottom of the heat dump.
Preferably, the inside of the import surge tank has voltage stabilizing gas.
Preferably, the sloppy heat melts sloppy heat of the salt pump including being connected with the import surge tank and melts salt pump outlet conduit, institute
State sloppy heat and melt and sloppy heat is provided with salt pump outlet conduit melts salt pump discharge filter screen.
Further, it is additionally provided with cold fuse salt between salt pump is melted in the sloppy heat and salt pump discharge filter screen is melted in the sloppy heat
Salt pump discharge motor-operated isolation valve is melted in pump discharge non-return valve and sloppy heat, and the sloppy heat, which melts salt pump outlet non-return valve and is located at the sloppy heat, melts
The lower section of salt pump discharge motor-operated isolation valve.
Further, in addition to the connection sloppy heat is melted the sloppy heat of salt pump outlet conduit and low temperature cold melting salt cellar and melted
Salt pump discharge recirculation conduit, the sloppy heat melt be provided with salt pump discharge recirculation conduit sloppy heat melt salt pump discharge recycling adjust
Save valve.
Further, outlet buffering is additionally provided between the top exit and the turbine-generator units of the heat dump
Tank, the outlet surge tank are located at the top exit of the heat dump.
Preferably, heat dump emptying fuse salt pipeline, the heat dump are provided with the outlet at bottom of the heat dump
The outlet at bottom by the heat dump be vented fuse salt pipeline connected with the turbine-generator units.
Further, it is additionally provided with hydrogenerator between the turbine-generator units and the high Warm Melt salt cellar
Group outlet fuse salt flow control valve.
The beneficial effect of technical scheme that the utility model embodiment provides is：Provide one kind and be used for the tower sun of fused salt
The top pressure power generation system in energy power station.Specifically, turbine-generator units are set between heat dump and high Warm Melt salt cellar, from suction
The fuse salt of hot device outflow first passes through turbine-generator units so that the potential energy of fuse salt is electric energy by turbine-generator units
Afterwards, then high Warm Melt salt cellar is made it into for further generating electricity.Melting can not only be reduced using the top pressure power generation system
Impact of the salt to high Warm Melt salt cellar, and the potential energy of fuse salt can be reclaimed, and electric energy is translated into, so as to reach section
The purpose of energy synergy.
Brief description of the drawings
, below will be to needed for embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
The accompanying drawing to be used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present utility model
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is a kind of top pressure power generation system for fused salt solar power tower that the utility model embodiment provides
Schematic flow sheet；
Fig. 2 is a kind of top pressure power generation system for fused salt solar power tower that the utility model embodiment provides
Structure scheme of installation.
Reference in figure represents respectively：
1st, low temperature cold melting salt cellar；
2nd, high Warm Melt salt cellar；
3rd, heat dump；
31st, heat dump emptying motor-operated isolation valve；
32nd, heat dump emptying fuse salt pipeline；
33rd, heat dump import motor-operated isolation valve；
34th, heat dump outlet motor-operated isolation valve；
35th, heat dump outlet fuse salt pipeline；
4th, turbine-generator units；
41st, turbine-generator units outlet fuse salt flow control valve；
42nd, turbine-generator units outlet fuse salt pipeline；
43rd, turbine-generator units outlet fuse salt motor-operated isolation valve；
5th, import surge tank；
51st, heat dump import surge tank outlet conduit；
6th, surge tank is exported；
61st, surge tank outlet fuse salt pipeline；
7th, salt pump is melted in sloppy heat；
71st, salt pump outlet conduit is melted in sloppy heat；
72nd, salt pump discharge filter screen is melted in sloppy heat；
73rd, salt pump outlet non-return valve is melted in sloppy heat；
74th, salt pump discharge motor-operated isolation valve is melted in sloppy heat；
75th, salt pump discharge recycling regulating valve is melted in sloppy heat；
76th, salt pump discharge recirculation conduit is melted in sloppy heat.
Embodiment
To make the technical solution of the utility model and advantage clearer, the utility model is implemented below in conjunction with accompanying drawing
Mode is described in further detail.
The utility model embodiment provide a kind of top pressure power generation system for fused salt solar power tower, as Fig. 1 with
Shown in Fig. 2, the top pressure power generation system includes low temperature cold melting salt cellar 1, high Warm Melt salt cellar 2 and is arranged on low temperature cold melting
Heat dump 3 between salt cellar 1 and high Warm Melt salt cellar 2, and the installation site of heat dump 3 is higher than the low temperature cold melting He of salt cellar 1
The installation site of high Warm Melt salt cellar 2；Also include the hydraulic generator being arranged between heat dump 3 and high Warm Melt salt cellar 2
Unit 4.
It should be noted that fused salt solar power tower is by being arranged in the settled date speculum on ground that sunshine is anti-
It is mapped on tower top heat dump, and solar thermal energy is collected and utilized by the fused salt of liquid, wherein, tower height is generally more than hundred
Rice, the fused salt of liquid can be salt-mixtures, such as KNO3And NaNO3Salt-mixture.
The operation principle that the utility model embodiment provides the top pressure power generation system for fused salt solar power tower is：
When power station is run, the salt-mixture stored in low temperature cold melts salt cellar 1 melts salt pump 7 by sloppy heat and is lifted to heat dump 3, melts
After salt absorbs the heat energy in heat dump 3, fuse salt pipeline 35 is exported by heat dump under gravity and declined, is declined from eminence
Fuse salt there is potential energy, when fuse salt is lowered through turbine-generator units 4, its own potential energy is converted into mechanical energy, water
The rotating shaft of turbine generator group 4 drives the rotor of generator again, converts mechanical energy into electric energy and exports, and fuse salt passes through water wheels
Enter high temperature heat fusing salt cellar 2 after generating set 4, be further used for generating electricity.Thus, fuse salt drops to high temperature from heat dump 3
Potential energy caused by heat fusing salt cellar 2 is recycled.
The utility model embodiment between heat dump and high Warm Melt salt cellar by setting hydrogenerator
Group, first pass through turbine-generator units from the fuse salt of heat dump outflow so that turbine-generator units are by fuse salt
Potential energy be electric energy after, then make it into high Warm Melt salt cellar be used for further generating.Using the top pressure power generation system not
Impact of the fuse salt to high Warm Melt salt cellar can be only reduced, and the potential energy of fuse salt can be reclaimed, and is translated into
Electric energy, so as to reach the purpose of energy efficiency.
In above-mentioned top pressure power generation system, melted in low temperature cold and import buffering is also provided between salt cellar 1 and heat dump 3
Tank 5, import surge tank 5 are located at the bottom of heat dump 3.The one side of import surge tank 5 is used to control into heat dump
The liquid level of fuse salt, ensure that fluid flow is stable；The inside of another aspect import surge tank 5 has voltage stabilizing gas, for controlling
The liquid level of import surge tank 5, when salt pump is melted in sloppy heat to be stopped, import surge tank 5 is sustainable to heat absorption within a period of time
Transporting molten salt in device 3, ensure that heat dump 3 is not burned.Further, sloppy heat melts salt pump 7 and is located at low temperature cold melting salt cellar 1
Inside, sloppy heat melt salt pump 7 and melt what salt pump outlet conduit 71 connected with import surge tank 5 by sloppy heat, melt salt pump discharge in sloppy heat
Sloppy heat is further provided with pipeline 71 and melts salt pump discharge filter screen 72, sloppy heat is melted salt pump discharge filter screen 72 and is used for delaying into import
Fuse salt before rushing tank 5 is filtered, and prevents cake mass from being resulted in blockage into import surge tank 5.
Further, melt salt pump 7 in sloppy heat and sloppy heat is melted and is also provided with sloppy heat between salt pump discharge filter screen 72 and melts salt pump
Salt pump discharge motor-operated isolation valve 74 is melted in outlet non-return valve 73 and sloppy heat, it is preferable that sloppy heat melts salt pump outlet non-return valve 73 positioned at cold
The lower section of fuse salt pump discharge motor-operated isolation valve 74.Wherein, it is cold for the startup that builds the pressure to melt salt pump discharge motor-operated isolation valve 74 for sloppy heat
Salt pump 7 is melted, it to be variable frequency pump that salt pump 7 is melted in sloppy heat, for controlling the liquid level of import surge tank 5；Salt pump outlet non-return is melted in sloppy heat
Valve 73 is used to prevent fuse salt from flowing backwards.
In above-mentioned top pressure power generation system, it may also include connection sloppy heat and melt salt pump outlet conduit 71 and low temperature cold melting salt cellar
Salt pump discharge recirculation conduit 76 is melted in 1 sloppy heat, and sloppy heat, which melts to be provided with sloppy heat on salt pump discharge recirculation conduit 76 and melt salt, to be pumped out
Mouth recycling regulating valve 75, the sloppy heat melt salt pump discharge recirculation conduit 76 and are used for debugging system and regulation flow.
In above-mentioned top pressure power generation system, further buffered by the fuse salt of import surge tank 5 by heat dump import
Tank outlet conduit 51 enter heat dump 3, be provided with heat dump import surge tank outlet conduit 51 heat dump import it is electronic every
From valve 33.Fuse salt is exchanged heat in heat dump 3 and raises temperature, and is gone out from the top exit of heat dump 3 by heat dump
Mouth fuse salt pipeline 35 is flowed out, and heat dump outlet motor-operated isolation valve 34 is provided with heat dump outlet fuse salt pipeline 35.Enter one
Step ground, outlet surge tank 6, the fuse salt after heat absorption are additionally provided between the top exit and turbine-generator units 4 of heat dump 3
Flowed out from the top exit of heat dump 3, and fuse salt pipeline 35 is exported by heat dump and enters inlet/outlet surge tank 6, outlet buffering
Tank 6 is used for the liquid level for controlling fuse salt, ensures the stabilization of fluid flow.Preferably, surge tank 6 is exported to be located at close to heat dump 3
Top exit at, surge tank 6 flows out from outlet fuse salt exports fuse salt pipeline 61 by surge tank and enters hydraulic generator
Machine.It can be without pressure equipment to export surge tank 6, have normal level.
Further, heat dump emptying fuse salt pipeline 32, heat dump emptying are provided with the outlet at bottom of heat dump 3
Heat dump emptying motor-operated isolation valve 31 is provided with fuse salt pipeline 32, the outlet at bottom of heat dump 3 is vented by heat dump to be melted
Melt salt pipeline 32 to connect with turbine-generator units 4.When system-down, heat dump emptying motor-operated isolation valve 31 can be opened, is passed through
Heat dump emptying fuse salt pipeline 32 reclaims fuse salt, and further passes through turbine-generator units using the fuse salt reclaimed
4 are generated electricity.
Pass through hydrogenerator between above-mentioned top pressure power generation system, turbine-generator units 4 and high Warm Melt salt cellar 2
Group outlet fuse salt pipeline 42 connects, and in turbine-generator units outlet, fuse salt pipeline 42 is additionally provided with turbine-generator units outlet
Fuse salt flow control valve 41 and turbine-generator units outlet fuse salt motor-operated isolation valve 43, wherein, turbine-generator units outlet
Fuse salt flow control valve 41 is used for the normal level for controlling outlet surge tank 6.
In above-mentioned top pressure power generation system, as shown in figure 1, exporting the normal level and turbine-generator units 4 of surge tank 6
Height between center line is H1, and this height potential energy generates electricity for turbine-generator units 4.Further, turbine-generator units 4
The heights of roofs H2 of center line and high Warm Melt salt cellar 2 is greater than 0m, and turbine-generator units outlet conduit and high Warm Melt
Minimum point between the import of salt cellar 2 is higher than the top of high Warm Melt salt cellar 2, to ensure fuse salt gravity reflux.
Further, as shown in Fig. 2 Fig. 2, which is one kind that the utility model embodiment provides, is used for fused salt tower type solar
The structure scheme of installation of the top pressure power generation system in power station, with reference to the instantiation to top pressure power generation system of the present utility model
The embodiment of system is described in further detail：
The present embodiment is melted using the tower photo-thermal power station conceptual design parameter of certain 100MW fuse salt as input parameter, this programme
It is 10h, fuse salt flow 898kg/s to melt the salt heat accumulation time；Heat dump centre-height 185m, the size (diameter of heat dump profile
× height) 18m × 17m；Size (diameter × height) 36m × 16m, highest liquid level 12.8m of salt cellar is melted in sloppy heat；Heat fusing salt cellar
Size (diameter × height) 36m × 16m, heat dump outlet surge tank normal level absolute altitude 193m；Hydraulic generator group is arranged on
At 19m (hydraulic turbine center line) absolute altitude.
Water flows out force evaluating：
P1=M × g × H/1000
Wherein：
P1- current contribute (kW)；
M-hydraulic turbine mass flow (kg/s)；
G-acceleration of gravity, take 9.8 (N/kg)；
H-heat dump outlet surge tank normal level and the hydraulic turbine center line discrepancy in elevation (m)；
Bring above input condition into formula：
P1=898 × 9.8 × (193-19)/1000=1531.27kW
Hydraulic turbine generator goes out force evaluating：
P2=P1×η
Wherein：
P1- current contribute (kW)；
P2- water turbine set contributes (kW)；
η-water turbine set overall efficiency, including inlet pipeline resistance etc., take 0.8；
Bring above input condition into formula：
P2=1531.27 × 0.8=1225.016kW
It can be seen that can not only reduce fuse salt to heating the impact of salt cellar using the top pressure power generation system, and can return
The potential energy of fuse salt is received, is translated into electric energy, and the effect of energy efficiency well can be reached.
It is described above to be for only for ease of it will be understood by those skilled in the art that the technical solution of the utility model, not to
Limit the utility model.All any modification, equivalent substitution and improvements within the spirit and principles of the utility model, made etc.,
It should be included within the scope of protection of the utility model.
Claims (10)
1. a kind of top pressure power generation system for fused salt solar power tower, including low temperature cold melting salt cellar (1), high temperature hot melt
Melt salt cellar (2) and the heat dump being arranged between the low temperature cold melting salt cellar (1) and the high Warm Melt salt cellar (2)
(3), and the heat dump (3) installation site higher than low temperature cold melting salt cellar (1) and the high Warm Melt salt cellar (2)
Installation site；Characterized in that,
Also include the turbine-generator units (4) being arranged between the heat dump (3) and the high Warm Melt salt cellar (2).
2. top pressure power generation system according to claim 1, it is characterised in that set in low temperature cold melting salt cellar (1)
It is equipped with sloppy heat and melts salt pump (7).
3. top pressure power generation system according to claim 2, it is characterised in that in low temperature cold melting salt cellar (1) and institute
State and import surge tank (5) is additionally provided between heat dump (3), the import surge tank (5) is located at close to the heat dump (3)
At bottom.
4. top pressure power generation system according to claim 3, it is characterised in that the inside of the import surge tank (5) has
Voltage stabilizing gas.
5. top pressure power generation system according to claim 3, it is characterised in that the sloppy heat melt salt pump (7) include with it is described
Salt pump outlet conduit (71) is melted in the sloppy heat of import surge tank (5) connection, and the sloppy heat is melted to be provided with salt pump outlet conduit (71)
Salt pump discharge filter screen (72) is melted in sloppy heat.
6. top pressure power generation system according to claim 5, it is characterised in that melt salt pump (7) and described cold in the sloppy heat
Be additionally provided between fuse salt pump discharge filter screen (72) sloppy heat melt salt pump outlet non-return valve (73) and sloppy heat to melt salt pump discharge electronic
Isolating valve (74), the sloppy heat, which melts salt pump outlet non-return valve (73) and is located at the sloppy heat, melts salt pump discharge motor-operated isolation valve (74)
Lower section.
7. top pressure power generation system according to claim 6, it is characterised in that also include the connection sloppy heat and melt salt pump discharge
Salt pump discharge recirculation conduit (76) is melted in the sloppy heat of pipeline (71) and low temperature cold melting salt cellar (1), and salt pump is melted in the sloppy heat
Sloppy heat is provided with outlet recirculation conduit (76) and melts salt pump discharge recycling regulating valve (75).
8. top pressure power generation system according to claim 1, it is characterised in that the heat dump (3) top exit and
Outlet surge tank (6) is additionally provided between the turbine-generator units (4), the outlet surge tank (6) is located at close to the suction
At the top exit of hot device (3).
9. top pressure power generation system according to claim 1, it is characterised in that at the outlet at bottom of the heat dump (3)
Heat dump emptying fuse salt pipeline (32) is provided with, the outlet at bottom of the heat dump (3) is vented by the heat dump
Fuse salt pipeline (32) connects with the turbine-generator units (4).
10. top pressure power generation system according to claim 1, it is characterised in that in turbine-generator units (4) and described
Turbine-generator units outlet fuse salt flow control valve (41) is additionally provided between high Warm Melt salt cellar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720919703.3U CN207212572U (en) | 2017-07-27 | 2017-07-27 | A kind of top pressure power generation system for fused salt solar power tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720919703.3U CN207212572U (en) | 2017-07-27 | 2017-07-27 | A kind of top pressure power generation system for fused salt solar power tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207212572U true CN207212572U (en) | 2018-04-10 |
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ID=61814123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720919703.3U Active CN207212572U (en) | 2017-07-27 | 2017-07-27 | A kind of top pressure power generation system for fused salt solar power tower |
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| Country | Link |
|---|---|
| CN (1) | CN207212572U (en) |
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2017
- 2017-07-27 CN CN201720919703.3U patent/CN207212572U/en active Active
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