CN206724501U - The automatic surge tank for maintaining fused salt heat dump outlet liquid level - Google Patents
The automatic surge tank for maintaining fused salt heat dump outlet liquid level Download PDFInfo
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- CN206724501U CN206724501U CN201720452165.1U CN201720452165U CN206724501U CN 206724501 U CN206724501 U CN 206724501U CN 201720452165 U CN201720452165 U CN 201720452165U CN 206724501 U CN206724501 U CN 206724501U
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- fused salt
- surge tank
- liquid level
- heat dump
- tank
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
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Abstract
The utility model discloses the automatic surge tank for maintaining fused salt heat dump outlet liquid level, including tank body, fused salt overflow launder, surge tank inlet duct and surge tank outlet conduit, fused salt overflow launder is located at tank interior and the height with higher than fused salt heat dump safe operation minimum liquid level, fused salt overflow launder are connected with surge tank inlet duct and do not connected with surge tank outlet conduit.The utility model can maintain fused salt heat dump outlet liquid level automatically and keep liquid level by limiting the overflow launder of fused salt free-flowing in surge tank, the each moment that can ensure to run in heat dump heating surface under the metering function of overflow launder is full of fused salt, do not require to adjust liquid level in surge tank with high-temperature molten salt throttling arrangement (valve), both can ensure to be full of fused salt in heat dump heating surface, prevent heat dump heating surface tube dry combustion method, also eliminate simultaneously and be worth high high-temperature molten salt throttling arrangement (valve) and avoid hidden danger safe for operation and the operation and maintenance expenses that throttling arrangement (valve) unstability that may be present is brought.
Description
Technical field
The technical field of solar energy thermal-power-generating is the utility model is related to, more particularly, is related to a kind of automatic maintenance fused salt
Heat dump exports the surge tank of liquid level.
Background technology
In the tower fused salt heat absorber system of photo-thermal power generation, in order to ensure that heat dump is safely and steadly run, it is necessary to ensure
The moment is full of heat-transfer working medium in heat dump heating surface --- hot melt salt.Therefore one outlet need to be configured in heat dump outlet by, which needing, delays
Tank is rushed, major function is：One effect is to provide free liquid during system variable load operation for the foundation of heat dump liquid level
Face, the holding of this liquid level are realized by adjusting the resistance of down-comer throttling arrangement (valve)；Another effect is to provide fused salt storage
Space is deposited, even declines blockage, what outlet surge tank can store at least 60s comes from heat dump fused salt amount.Meanwhile outlet is slow
The setting for rushing tank has also relaxed the temperature control valve (TCV) of quick response and has reacted the contradiction of slower feed pump and its regulating valve, it is allowed to
Rapid response is made in change to thermic load.
In conventional design, outlet surge tank is the pressure vessel manufactured and designed according to relevant criterion.But due to outlet
One critically important function of surge tank be in normal course of operation for ensure heat dump heating surface in built full of heat transfer medium
A free surface is found, the holding of this liquid level needs to realize by adjusting the resistance of down-comer choke valve.It is above-mentioned in order to realize
Purpose, decline needs to arrange that a set of throttling arrangement (valve) carrys out flow in regulation pipe and then maintains required liquid level in tank on pipeline.Currently
Subject matter be for fused-salt medium high-temperature molten salt throttling arrangement (valve) performance requirement it is very high, can not still domesticize completely,
Import is also needed to, so with high costs.And large sized unit it is supporting fused salt throttling arrangement (valve) bore it is very big, operation, dimension
Shield expense is also high.
The content of the invention
In order to solve the problems of the prior art, the purpose of this utility model, which is to provide one kind, to maintain fused salt to inhale automatically
Hot device exports liquid level and without the surge tank of throttling arrangement (valve).
The utility model provides a kind of automatic surge tank for maintaining fused salt heat dump outlet liquid level, and the surge tank includes
Tank body, fused salt overflow launder, surge tank inlet duct and surge tank outlet conduit, wherein,
The fused salt overflow launder is located at tank interior and the height with higher than fused salt heat dump safe operation minimum liquid level
Degree, the fused salt overflow launder are connected with surge tank inlet duct and not connected with surge tank outlet conduit.
Maintain one embodiment of the surge tank of fused salt heat dump outlet liquid level, the fused salt automatically according to the utility model
Overflow launder is that overflow frid surrounds with tank wall and is fixed on the cell body of tank base.
Maintain one embodiment of the surge tank of fused salt heat dump outlet liquid level, the fused salt automatically according to the utility model
The top of overflow launder is overfall, and the bottom of the fused salt overflow launder is provided with emptying hole and the emptying connected with the emptying hole
Unit.
Maintain one embodiment of the surge tank of fused salt heat dump outlet liquid level, the tank body automatically according to the utility model
On be additionally provided with exhaustion spill mouth, thermocouple interface and interface of the level gauge.
Maintain one embodiment of the surge tank of fused salt heat dump outlet liquid level, the buffering automatically according to the utility model
The surge tank inlet duct of tank connects with the outlet conduit of fused salt heat dump, and the surge tank outlet conduit of the surge tank is with declining
Pipe connects.
Maintain one embodiment of the surge tank of fused salt heat dump outlet liquid level, the buffering automatically according to the utility model
Tank is vertical buffering tank or Horizontal buffer tank.
Maintain one embodiment of the surge tank of fused salt heat dump outlet liquid level, the buffering automatically according to the utility model
Highest liquid level warning unit is provided with tank.
Compared with the prior art, the automatic surge tank for maintaining fused salt heat dump outlet liquid level provided by the utility model can be with
It is automatic to maintain fused salt heat dump outlet liquid level and keep liquid level by limiting the overflow launder of fused salt free-flowing in surge tank,
(the whole heat absorber system Design cooling load model of each moment in heat dump heating surface can be ensured under the metering function of overflow launder
In enclosing) fused salt is full of, without requiring to adjust liquid level in surge tank with high-temperature molten salt throttling arrangement (valve).So it can both protect
Fused salt is full of in card heat dump heating surface, prevents heat dump heating surface tube dry combustion method, while also eliminates and is worth high high temperature melting
Salt device (valve), it also avoid hidden danger safe for operation and operation and maintenance expenses that device unstability that may be present is brought.
Brief description of the drawings
Fig. 1 shows the buffering that liquid level is exported according to the automatic maintenance fused salt heat dump of the utility model exemplary embodiment
The main structure diagram of tank.
Fig. 2 shows the buffering that liquid level is exported according to the automatic maintenance fused salt heat dump of the utility model exemplary embodiment
The overlooking the structure diagram of tank.
Description of reference numerals：
1- tank bodies, 2- surge tanks inlet duct, 3- fused salts overflow launder, 4- surge tanks outlet conduit, 5- emptyings unit, 6- rows
Gas overfall, 7- thermocouples interface, 8- interface of the level gauge, 9- emptyings hole；Liquid level when L1 is fused salt heat dump oepration at full load；
L2 is fused salt heat dump safe operation minimum liquid level.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Any feature disclosed in this specification, unless specifically stated otherwise, can be equivalent by other or with similar purpose
Alternative features are replaced.I.e., unless specifically stated otherwise, each feature is an example in a series of equivalent or similar characteristics
.
Below by maintaining the structure of the surge tank of fused salt heat dump outlet liquid level and principle to enter in the utility model automatically
Row detailed description.
Fig. 1 shows the buffering that liquid level is exported according to the automatic maintenance fused salt heat dump of the utility model exemplary embodiment
The main structure diagram of tank, Fig. 2 is shown to be gone out according to the automatic maintenance fused salt heat dump of the utility model exemplary embodiment
The overlooking the structure diagram of the surge tank of oral fluid position.
As depicted in figs. 1 and 2, gone out according to exemplary embodiment of the present utility model, the automatic maintenance fused salt heat dump
The surge tank of oral fluid position includes tank body 1, fused salt overflow launder 3, surge tank inlet duct 2 and surge tank outlet conduit 4, wherein, melt
Salt overflow launder 3 is located at the inside of tank body 1 and with the height higher than fused salt heat dump safe operation minimum liquid level L2, fused salt overflow
Groove 3 is connected with surge tank inlet duct 2 and not connected with surge tank outlet conduit 4.
Specifically, the fused salt overflow launder 3 in the utility model is that overflow frid surrounds with tank wall and is fixed on tank body bottom
The cell body in portion, namely the fused salt overflow launder are the overflow launder that can limit flow rate of molten salt, can be annular groove, rectangular channel or other shapes
Shape.For example, as depicted in figs. 1 and 2, the fused salt overflow launder 3 is specifically surrounded by 3 blocks of steel plates and buffering canister body wall, and the fused salt overflows
Chute 3 is welded on the tank base of surge tank, highly designs and determines by power system capacity, but should be higher than that fused salt heat dump safe operation
Minimum liquid level L2 height.The top of the fused salt overflow launder 3 is overfall, and the bottom of fused salt overflow launder 3 is preferably set up
There are emptying hole 9 and the emptying unit 5 connected with emptying hole 9, it is possible thereby to when heat dump is stopped transport by fused salt overflow launder 3
Fused salt emptying simultaneously prevents fused salt from being crystallized in system.
Also, the outlet conduit (not shown) of the surge tank inlet duct 2 of the utility model surge tank and fused salt heat dump
Connection, the surge tank outlet conduit 4 of surge tank connect with down-comer (not shown), are achieved in fused salt heat dump outlet liquid level
It is automatic to maintain.Specifically, the high-temperature molten salt transmitted from fused salt heat dump flows into fused salt by surge tank inlet duct 2 first
In overflow launder 3, treat full of just can be in overflow to surge tank, then from surge tank outlet conduit 4 lead to down-comer stream after whole groove
Enter subsequent pipeline or equipment.By the metering function of fused salt overflow launder 3, can ensure to connect with the outlet conduit of fused salt heat dump
Surge tank inlet duct be immersed in always below the fused salt liquid level in fused salt overflow launder, even fused salt heat dump is extremely low
Run under load, also will not lose liquid level because fused salt aerial drainage in down-comer is too fast and ensure.
In addition, for the ease of detecting the operating mode in surge tank, exhaustion spill mouth 6, thermocouple interface are additionally provided with tank body 1
7 and the grade necessity annex of interface of the level gauge 8.Also, surge tank of the present utility model can be vertical buffering tank or Horizontal buffer tank.
The outlet that fused salt heat dump is passed through according to the utility model, the high-temperature molten salt after the heating of fused salt heat dump heating surface
Pipeline and surge tank inlet duct flow into fused salt overflow launder 3 first, wait that overflow extremely buffers after being full of whole fused salt overflow launder
In the tank body 1 of tank, then lead to down-comer from surge tank outlet conduit 4 again and flow into subsequent pipeline or equipment.Wherein, L1 is fused salt
Liquid level during heat dump oepration at full load, L2 are fused salt heat dump safe operation minimum liquid level.
When full (height) load operation of fused salt heat absorber system, into the fused salt amount in surge tank and the molten of surge tank is flowed out
Salt amount is substantially suitable, then the liquid level in surge tank fluctuates at L1.When fused salt heat absorber system underload is particularly minimum design
During load operation, the fused salt amount of outflow fused salt surge tank will be greater than the fused salt amount entered in surge tank, and now, liquid level can be very in tank
Fast to reduce, when liquid level as little as fused salt heat dump safe operation minimum liquid level, fused salt overflow launder 3 can maintain L2 liquid herein
Position no longer changes, and so ensures that the outlet of fused salt heat dump always in fused salt overflow launder below the liquid level of high-temperature molten salt, even if
It is that fused salt heat dump is run under extreme underload, liquid level guarantor will not be also lost because of fused salt aerial drainage excessive velocities in down-comer
Card.
Also, the change of the liquid level in surge tank need not be monitored in actual moving process in real time, in order to ensure that surge tank has
Effect volume can receive at least 60s fused salt amount from fused salt heat dump, only need to set highest liquid level warning unit, this
Sample just simplifies operation control.
In summary, the utility model proposes automatic maintenance fused salt heat dump outlet liquid level surge tank can not only have
Effect ensures that heat dump heating surface is interior and is full of fused salt, prevents heat dump dry combustion method, while also eliminate and be worth high high-temperature molten salt section
Device (valve) is flowed, it also avoid hidden danger safe for operation and operation and maintenance expenses that throttling arrangement unstability that may be present is brought.Fortune
Change during row without liquid level in real-time monitoring surge tank, simplify operation operation.
The utility model is not limited to foregoing embodiment.The utility model expands to any in this specification
The new feature of middle disclosure or any new combination, and disclose any new method or process the step of or any new group
Close.
Claims (7)
1. a kind of automatic surge tank for maintaining fused salt heat dump outlet liquid level, it is characterised in that the surge tank includes tank body, melted
Salt overflow launder, surge tank inlet duct and surge tank outlet conduit, wherein,
The fused salt overflow launder is located at tank interior and the height with higher than fused salt heat dump safe operation minimum liquid level, institute
Fused salt overflow launder is stated to connect and do not connect with surge tank outlet conduit with surge tank inlet duct.
2. maintain the surge tank of fused salt heat dump outlet liquid level automatically according to claim 1, it is characterised in that the fused salt
Overflow launder is that overflow frid surrounds with tank wall and is fixed on the cell body of tank base.
3. maintain the surge tank of fused salt heat dump outlet liquid level automatically according to claim 1, it is characterised in that the fused salt
The top of overflow launder is overfall, and the bottom of the fused salt overflow launder is provided with emptying hole and the emptying connected with the emptying hole
Unit.
4. maintain the surge tank of fused salt heat dump outlet liquid level automatically according to claim 1, it is characterised in that the tank body
On be additionally provided with exhaustion spill mouth, thermocouple interface and interface of the level gauge.
5. maintain the surge tank of fused salt heat dump outlet liquid level automatically according to claim 1, it is characterised in that the buffering
The surge tank inlet duct of tank connects with the outlet conduit of fused salt heat dump, and the surge tank outlet conduit of the surge tank is with declining
Pipe connects.
6. maintain the surge tank of fused salt heat dump outlet liquid level automatically according to claim 1, it is characterised in that the buffering
Tank is vertical buffering tank or Horizontal buffer tank.
7. maintain the surge tank of fused salt heat dump outlet liquid level automatically according to claim 1, it is characterised in that the buffering
Highest liquid level warning unit is provided with tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720452165.1U CN206724501U (en) | 2017-04-27 | 2017-04-27 | The automatic surge tank for maintaining fused salt heat dump outlet liquid level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720452165.1U CN206724501U (en) | 2017-04-27 | 2017-04-27 | The automatic surge tank for maintaining fused salt heat dump outlet liquid level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206724501U true CN206724501U (en) | 2017-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720452165.1U Active CN206724501U (en) | 2017-04-27 | 2017-04-27 | The automatic surge tank for maintaining fused salt heat dump outlet liquid level |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556304A (en) * | 2019-01-14 | 2019-04-02 | 中国电力工程顾问集团华东电力设计院有限公司 | Tower type solar photo-thermal power station endothermic system and its control method |
| CN113883731A (en) * | 2021-09-17 | 2022-01-04 | 浙江可胜技术股份有限公司 | Heat storage system |
| CN114111070A (en) * | 2021-11-24 | 2022-03-01 | 东方电气集团东方锅炉股份有限公司 | Export buffer tank of fused salt heat absorber |
-
2017
- 2017-04-27 CN CN201720452165.1U patent/CN206724501U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556304A (en) * | 2019-01-14 | 2019-04-02 | 中国电力工程顾问集团华东电力设计院有限公司 | Tower type solar photo-thermal power station endothermic system and its control method |
| CN113883731A (en) * | 2021-09-17 | 2022-01-04 | 浙江可胜技术股份有限公司 | Heat storage system |
| CN113883731B (en) * | 2021-09-17 | 2024-05-24 | 浙江可胜技术股份有限公司 | Heat storage system |
| CN114111070A (en) * | 2021-11-24 | 2022-03-01 | 东方电气集团东方锅炉股份有限公司 | Export buffer tank of fused salt heat absorber |
| CN114111070B (en) * | 2021-11-24 | 2023-08-18 | 东方电气集团东方锅炉股份有限公司 | Outlet buffer tank of fused salt heat absorber |
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