A kind of heat-exchange system for solar heat power generation system
Technical field
The present invention relates to solar energy thermal-power-generating field, particularly relate to a kind of for solar heat power generation system
Heat-exchange system.
Background technology
Along with the continuous consumption of Fossil fuel, lack of energy problem is the most serious.It addition, fossil energy
A large amount of consumptions, the most constantly destroy the living environment of the mankind, and existence and the safety of the mankind in serious threat.
Solar energy, as a kind of reproducible green energy resource, has the feature of " inexhaustible ".
Solar energy thermal-power-generating is as a kind of mode in Solar use, it is possible to ensure stable electric power output, and
Possess the ability of regulation of avoiding the peak hour, be with a wide range of applications.
More solar energy thermal-power-generating technology is applied mainly to have tower technology and slot type technology, Qi Zhongyong at present
Medium in heat absorption is mainly fused salt and conduction oil.But, no matter it is the tower technology of fused salt or conduction oil
Slot type technology, the most inevitably uses the heat exchange of heat-absorbing medium and water/steam, and this then needs to apply mechanically
Heat-exchange system in solar energy thermal-power-generating.
Tower-type solar thermal power generating system is in actual application, it is desirable to have stronger Load Regulation ability,
When tower-type solar thermal power generating system needs to export bigger electrical power, it is desirable to heat-exchange system can export relatively
Big load, needs to export less load at tower-type solar thermal power generating system, requires again heat-exchange system energy
Enough exporting relatively Smaller load, this is accomplished by heat-exchange system and possesses regulating power flexibly, only adopts in prior art
Heat with the device of working medium in single high-temperature heat-storage medium heat exchanging system, heat-exchange system produces
Superheated steam load constant, when needs regulation load, it is impossible to exchange burden requirement in time and respond.
Summary of the invention
For problem present in background technology, this application provides a kind of for solar heat power generation system
Heat-exchange system, it has adjusts load-bearing capacity flexibly, it is possible to the Load Regulation of electricity generation system is required and
Time respond.
In order to reach foregoing invention purpose, solve the technical scheme that its technical problem used as follows:
A kind of heat-exchange system for solar heat power generation system, including the first high-temperature heat-storage medium conveying pipe
Road, preheater, vaporizer, superheater, waterworks, steam turbine and the first valve:
Described first high-temperature heat-storage medium conveyance conduit connects with the heat-storage medium entrance on described superheater,
Heat-storage medium outlet on described superheater is by the first pipeline and the heat-storage medium entrance on described vaporizer
Connection, the heat-storage medium outlet on described vaporizer is situated between with the heat accumulation on described preheater by second pipe
Matter entrance connects, and heat-storage medium discharge is changed by the heat-storage medium outlet on described preheater by the 3rd pipeline
Hot systems;
Described waterworks are connected with the device of working medium entrance on described preheater by the 4th pipeline, described pre-
Device of working medium outlet on hot device is connected with the device of working medium entrance on described vaporizer by the 5th pipeline, described
Device of working medium outlet on vaporizer is connected with the device of working medium entrance on described superheater by the 6th pipeline, institute
State the outlet of the device of working medium on superheater to be connected with described steam turbine by the 7th pipeline;
Described first valve is arranged on the 8th pipeline, and the two ends of described 8th pipeline are respectively with described first
Pipeline connects with second pipe.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Heat-exchange system also includes that the second valve, described second valve are arranged on the 9th pipeline, described 9th pipeline
Two ends respectively with described 4th pipeline and the 5th pipeline communication.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Heat-exchange system also includes the second high-temperature heat-storage medium conveyance conduit, described second high-temperature heat-storage medium conveying pipe
Road and the first pipeline communication.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Heat-exchange system also includes the first low temperature heat-storage medium conveyance conduit, described first low temperature heat-storage medium conveying pipe
Road connects with the heat-storage medium entrance on described superheater.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Preheater, vaporizer and superheater are shell-and-tube heat exchanger, wherein:
Described heat-storage medium flows in the shell side of described preheater and superheater, and described device of working medium is described
The tube side of preheater and superheater flows;
Described heat-storage medium flows in the tube side of described vaporizer, and described device of working medium is at described vaporizer
Shell side flows.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
At least one in preheater, vaporizer and superheater is U-tube shell heat exchanger.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Vaporizer includes U-tube shell heat exchanger and is arranged at the drum above U-tube shell heat exchanger, wherein:
Described drum is connected with the shell side of described U-tube shell heat exchanger by least one down-comer, and
Connected by the shell side of at least one tedge with described U-tube shell heat exchanger;
The abutment of the shell side of described down-comer and described U-tube shell heat exchanger less than described tedge with
The abutment of the shell side of described U-tube shell heat exchanger.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Down-comer is arranged at described U-shaped pipe shell type heat exchange with the abutment of the shell side of described U-tube shell heat exchanger
The bottom of the shell side of device, described tedge is arranged with the abutment of the shell side of described U-tube shell heat exchanger
Top in the shell side of described U-tube shell heat exchanger.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Down-comer is by the first isocon and the second isocon respectively with the shell side of described U-tube shell heat exchanger even
Logical, the abutment of the shell side of described first isocon and the second isocon and described U-tube shell heat exchanger
It is below the abutment of described tedge and the shell side of described U-tube shell heat exchanger.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Device of working medium entrance and device of working medium outlet on vaporizer are respectively arranged on described drum, and described vaporizer
On the height of device of working medium entrance less than the height of the device of working medium outlet on described vaporizer.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Device of working medium outlet on vaporizer is arranged at the top of described drum.
Relative to prior art, the invention have the benefit that
1, the present invention carries by arranging the first high-temperature heat-storage medium conveyance conduit and the first low temperature heat-storage medium
Pipeline, it is possible to regulated the temperature of heat-storage medium before heat-storage medium enters superheater, thus reach regulation
The purpose of heat-exchange system load;
2, the present invention is by arranging the second high-temperature heat-storage medium conveyance conduit, when the heat accumulation from superheater is situated between
Matter temperature after heat exchange reduces, when being insufficient for the burden requirement of heat-exchange system, and can be high by second
Temperature heat-storage medium conveyance conduit supplements high-temperature heat-storage medium to vaporizer, improves the heat accumulation entered in vaporizer
The temperature of medium, thus reach to improve the purpose of heat-exchange system load;
3, the present invention utilizes the 8th pipeline to be connected with second pipe by the first pipeline, and on the 8th pipeline
First valve is set, when needing to turn down heat-exchange system load at vaporizer, the first valve can be opened
Door, makes the heat-storage medium from superheater be shunted, is partly into vaporizer, and a part is directly entered
Enter preheater, so that the amount of the heat-storage medium entered in vaporizer reduces, thus reach to regulate heat exchange system
The purpose of system load;
4, the present invention utilize the 9th pipeline by the 4th pipeline and the 5th pipeline communication, and on the 9th pipeline
Second valve is set, when needing the load turning heat-exchange system down, the second valve can be opened, make from
The device of working medium of preheater is shunted, and is partly into vaporizer, and a part comes back to preheater, from
And make the amount of the device of working medium in entrance vaporizer reduce, thus reach to regulate the purpose of heat-exchange system load.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described.It is clear that the accompanying drawing in describing below is only the present invention
Some embodiments, for those skilled in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.In accompanying drawing:
Fig. 1 is the overall structure schematic diagram of a kind of heat-exchange system for solar heat power generation system of the present invention;
Fig. 2 is the vaporizer cross section signal of a kind of heat-exchange system for solar heat power generation system of the present invention
Figure.
[primary symbols explanation]
1-preheater, 2-superheater, 3-vaporizer, 4-the first high-temperature heat-storage medium conveyance conduit, 5-
One low temperature heat-storage medium conveyance conduit, 6-the 7th pipeline, 7-the 6th pipeline, 8-the second high-temperature heat-storage medium
Conveyance conduit, 9-the first pipeline, 10-the 8th pipeline, 11-the first valve, 12-second pipe, 13-
Five pipelines, 14-the 4th pipeline, 15-waterworks, 16-the 9th pipeline, 17-the second valve, 18-the 3rd
Pipeline, 19-vaporizer device of working medium exports, 20-drum, 21-vaporizer device of working medium entrance, 22-tedge,
23-vaporizer tube side, 24-adpting flange, 25-bobbin carriage, 26-down-comer, 27-the first isocon, 28-
Second isocon, 29-arc pipe portion.
Detailed description of the invention
Below with reference to the accompanying drawing of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Whole description and discussion, it is clear that a part of example of the only present invention as described herein, be not
Whole examples, based on the embodiment in the present invention, those of ordinary skill in the art are not making creation
Property work on the premise of the every other embodiment that obtained, broadly fall into protection scope of the present invention.
In one embodiment of this invention, as it is shown in figure 1, include the first high-temperature heat-storage medium conveyance conduit 4,
Preheater 1, vaporizer 3, superheater 2, waterworks 15, steam turbine and the first valve 11.
Described first high-temperature heat-storage medium conveyance conduit 4 is with the heat-storage medium entrance on described superheater 2 even
Logical, the heat-storage medium outlet on described superheater 2 is by the first pipeline 9 and the storage on described vaporizer 3
Thermal medium entrance connects, and the heat-storage medium outlet on described vaporizer 3 is pre-with described by second pipe 12
Heat-storage medium entrance connection on hot device 1, the heat-storage medium outlet on described preheater 1 is by the 3rd pipe
Heat-storage medium is discharged heat-exchange system to low temperature heat-storage medium storage tank by road 18;
Described waterworks 15 are connected with the device of working medium entrance on described preheater 1 by the 4th pipeline 14,
Device of working medium outlet on described preheater 1 is entered with the device of working medium on described vaporizer 3 by the 5th pipeline 13
Mouth connection, the device of working medium outlet on described vaporizer 3 is by the 6th pipeline 7 and described superheater 2
Device of working medium entrance connects, and the device of working medium outlet on described superheater 2 is by the 7th pipeline 6 and described steamer
Machine connects;
Described first valve 11 is arranged on the 8th pipeline 10, the two ends of described 8th pipeline 10 respectively with
Described first pipeline 9 connects with second pipe 12.Use this kind of design, turn heat-exchange system down when needs and exist
During load at vaporizer 3, the first valve 11 can be opened, make the heat-storage medium from superheater 2 obtain
To shunting, being partly into vaporizer 3, a part is directly entered preheater 1, so that entering vaporizer
The amount of the heat-storage medium in 3 reduces, thus reaches to regulate the purpose of heat-exchange system load.
In another embodiment of the invention, described heat-exchange system also includes the second valve 17, described second
Valve 17 is arranged on the 9th pipeline 16, the two ends of described 9th pipeline 16 respectively with described 4th pipeline
14 connect with the 5th pipeline 13.Use this kind of design, when needing the load turning heat-exchange system down, can
To open the second valve 17, make the device of working medium from preheater 1 be shunted, be partly into vaporizer
3, a part comes back to preheater 1, so that the amount of the device of working medium entered in vaporizer 3 reduces, from
And reach to regulate the purpose of heat-exchange system load.
As the improvement of a kind of heat-exchange system for solar heat power generation system of the present invention, described
Heat-exchange system also includes the second high-temperature heat-storage medium conveyance conduit 8, described second high-temperature heat-storage medium conveying pipe
Road 8 connects with the first pipeline 9.By arranging the second high-temperature heat-storage medium conveyance conduit 8, when from overheated
The heat-storage medium of device 2 temperature after heat exchange reduces, when being insufficient for the burden requirement of heat-exchange system,
High-temperature heat-storage medium can be supplemented to vaporizer 3 by the second high-temperature heat-storage medium conveyance conduit 9, improve into
Enter the temperature of heat-storage medium in vaporizer 3, thus reach to improve the purpose of heat-exchange system load.
In another embodiment of the invention, described heat-exchange system also includes the first low temperature heat-storage medium conveying
Pipeline 5, described first low temperature heat-storage medium conveyance conduit 5 and the heat-storage medium entrance on described superheater 2
Connection.
In another embodiment of the invention, described preheater 1, vaporizer 3, superheater 2 are shell
Formula heat exchanger, wherein, described heat-storage medium flows in the shell side of described preheater 1 and superheater 2,
Described device of working medium flows in the tube side of described preheater 1 and superheater 2;Described heat-storage medium is described
Flowing in the tube side of vaporizer 3, described device of working medium flows in the shell side of described vaporizer 3.Use this
Plant design, when device of working medium walks shell side at vaporizer 3, it is possible to achieve blowdown, prevent in vaporizer 3
Water scale effect heat transfer effect.
In another embodiment of the invention, in described preheater 1, vaporizer 3, superheater 2 at least
One is U-tube shell heat exchanger.Use U-tube shell heat exchanger so that device of working medium flow velocity is very fast,
Varying duty regulating power is stronger.
As in figure 2 it is shown, in another embodiment of the invention, described vaporizer 3 includes U-tube shell-type
Heat exchanger and be arranged at the drum 20 above U-tube shell heat exchanger, described drum 20 is by least one
Down-comer 26 connects with the shell side of described U-tube shell heat exchanger, and by least one tedge 22
Connect with the shell side of described U-tube shell heat exchanger.Further, described down-comer 26 and described U-tube shell
The abutment of the shell side of formula heat exchanger is less than the shell side of described tedge 22 with described U-tube shell heat exchanger
Abutment.
Device of working medium entrance 21 and device of working medium outlet 19 on described vaporizer 3 are respectively arranged at described drum
On 20, and, the height of the device of working medium entrance 21 on described vaporizer 3 is less than on described vaporizer 3
The height of device of working medium outlet 19.Specifically, in the present embodiment, by first point bottom down-comer 26
Flow tube 27 and the second isocon 28 shunt, and first isocon 27 one end connects with down-comer 26,
Other end connects with the shell side of U-tube shell heat exchanger, second isocon 27 one end and down-comer 26
Connection, other end connects with the shell side of U-tube shell heat exchanger.Further, in the present embodiment, U-shaped
Shell-and-tube heat exchanger includes arc pipe portion 29 and two straight sections connected with 29 two, arc pipe portion port one,
Two described straight sections are each provided with a company fixing to be connected with extension tube attached away from the one end in described arc pipe portion 29
Acting flange 24;The front end of two described straight sections is also respectively provided with a bobbin carriage 25, two described bobbin carriages 25
Tube side 23 with described U-shaped heat exchanger connects respectively, for the fluid from extension tube attached is introduced tube side 23
In.The vaporizer 3 of the present invention uses the design arranging drum 20 at the top of U-tube shell heat exchanger,
On the one hand the flow velocity of U-tube shell heat exchanger is very fast, and varying duty regulating power is relatively strong, on the other hand sets again
It is equipped with drum 20, it is possible to ensure that heat-exchange system has stronger capacity of resisting disturbance.
In another embodiment of the invention, the outlet of the device of working medium on described vaporizer 3 19 is arranged at drum
20 tops.The device of working medium entered in vaporizer 3 after heat exchange, is changed into saturated vapor in vaporizer 3,
Now device of working medium exists in the form of a vapor, is arranged at vapour by the device of working medium on vaporizer 3 is exported 19
Wrap 20 tops, it is simple to the device of working medium of gaseous state enters superheater 2 and is further heated.
In another embodiment of the invention, described down-comer 26 and the shell of described U-tube shell heat exchanger
The abutment of journey is arranged at the bottom of the shell side of described U-tube shell heat exchanger, described tedge 22 and institute
The abutment of the shell side stating U-tube shell heat exchanger is arranged at the shell side of described U-tube shell heat exchanger
Top.It should be noted that in the present embodiment, described down-comer 26 is by the first isocon 27 He
Second isocon 28 shell side with described U-tube shell heat exchanger respectively connects, therefore, mentioned above under
Fall pipe 26 actually refers to the first isocon 26 and the second isocon 27 and shell side with the abutment of shell side
Abutment.The shell of described first isocon 26 and the second isocon 27 and described U-tube shell heat exchanger
The abutment of journey is below the abutment of described tedge 22 and the shell side of described U-tube shell heat exchanger.
Use this kind of design, be because device of working medium and existed in liquid form before entering vaporizer 3, through evaporation
It is changed into gaseous state after device 3 heat exchange, the abutment of down-comer 26 with shell side is arranged at the bottom of shell side, on
Riser 22 arranges the top with shell side with the abutment of shell side, it is possible to ensure that vaporous water working medium enters vapour smoothly
Bag.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not
Being confined to this, any those familiar with the art, can in the technical scope that the invention discloses
The change readily occurred in or replacement, all should contain within protection scope of the present invention.Therefore, the present invention
Protection domain should be as the criterion with scope of the claims.