CN101240947B - Self-adapting solar energy heat collection molten salt receiver system - Google Patents
Self-adapting solar energy heat collection molten salt receiver system Download PDFInfo
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- CN101240947B CN101240947B CN200810059840XA CN200810059840A CN101240947B CN 101240947 B CN101240947 B CN 101240947B CN 200810059840X A CN200810059840X A CN 200810059840XA CN 200810059840 A CN200810059840 A CN 200810059840A CN 101240947 B CN101240947 B CN 101240947B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
- F24S20/20—Solar heat collectors for receiving concentrated solar energy, e.g. receivers for solar power plants
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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 present invention provides a solar energy heat collecting molten salt receiver system and method having adaptivity. The fault-tolerance molten salt pump transmitting system inputs cold molten salt in each receiver module to absorbing heat, heat molten salt after absorbing inputs in heat molten buffer tank via outlet on the top of the each receiver mould, then sending in turbine installation via the lower vessel to recycling potential energy of the heat molten salt, a flow control valve mounted on the lower vessel controls the molten salt quantity in the molten salt buffer tank and kept in a given range, each receiver in the system has a control system individual adjusting molten salt flow quantity according to temperature of the output molten salt to ensure the balance of each receiver mould output molten salt temperature and keeping with temperature set by system. The invention not only ensures optimalizing working efficiency of the molten salt receiver system and enhances working efficiency of the whole electric power plant, but also reduces cost of the system investment operation.
Description
Technical field
The present invention relates to a kind of solar energy heat collection molten salt receiver system and method, relate in particular to a kind of tower type solar heat collection molten salt receiver system and method, belong to application of solar with adaptivity.
Background technology
Human thirst for progressively reducing until finally breaking away from the demand that fossil energy is relied on stimulated the exploration of world market to cleaning and renewable energy power generation, and solar energy becomes a kind of feasible choosing undoubtedly based on the spatter property and the unlimited characteristics of potential supply of its generating.
Molten salt receiver system is used in the solar energy heating conversion system, one of wherein the most common mode is exactly to apply to tower type solar thermal-arrest generating, and this all has detailed explanation in the patent No. is respectively the United States Patent (USP) of US 4407269, US 5417052 and US 6701711.
In tower type solar thermal-arrest electricity generation system, heliostat in the heliostat field reflexes to sunshine on the central receiver of the reception top of tower that is arranged on the mirror center court, the sunshine heating that central authorities' receiver is reflected by heliostat, so the solar energy that receives is converted into heat energy and be transferred to conduct heat and heat accumulation working medium in, the typical case of this working medium is exactly fused salt (mixture of a kind of liquid sodium nitrate and potassium nitrate).Fused salt after the heat absorption is called hot salt again, is stored in the hot melt salt holding vessel, is used for adding required steam of heat generating system steam turbine or the required gas of gas turbine.
In molten salt receiver system, fused salt be heat-transfer working medium be again heat accumulation working medium.When the non-default property of the mobile appearance of fused salt is slowed down even is stopped fully, make it to depart from receiver if can not in time change the direction of heliostat reflected sunlight, receiver will be because of overheated and impaired.Avoiding one of overheated method of receiver is exactly to utilize sloppy heat salt pressurization holding vessel, even if like this under the situation that the fused salt delivery pump breaks down, the sloppy heat salt of pressurization in the holding vessel still can keep flowing to receiver based on the effect of pressure, thereby the system of assurance has time enough to adjust heliostat, makes its reverberation offset from center receiver.
Because the reaction of the powerful and heliostat field of central receiver power is slow, in the sloppy heat salt pressurized canister system abundant sloppy heat salt must be arranged, to guarantee that its flow and the time that can keep abundance allows system that heliostat is adjusted, pressurized canister must keep state of thermal isolation simultaneously, if it is higher that central authorities receive tower, this pressurized canister also will conform with the standard of HTHP, and these certainly will all can roll up the investment operating cost of system.
In addition, the maximum operation temperature of fused salt and receiver pipeline is subjected to the restriction of itself physical attribute.Utilizing fused salt as working medium, especially under the situation of fused salt mixt with a kind of 60% sodium nitrate and 40% potassium nitrate as working medium, its maximum operation temperature is about 610 ℃, very near the operating temperature of solar energy heating electricity generation system, when the temperature of molten salt of each receiver module output is inconsistent, will obviously reduce the highest output temperature of receiver, and then reduce the working range of system's heat energy temperature, thereby cause the reduction of whole generating factory operating efficiency.
At different azimuths, the sun light quantity that reflexes to central receiver from the heliostat field exists certain difference, and for example: the morning, the receiver module in central authorities receiver west can receive more solar reflection optical, and what afternoon, module in the east then received is more; Equally, towards the receiver module of North and South direction also can be in the winter time with similar situation appears summer.The difference of this reception sun light quantity certainly will cause the thermal-arrest of each receiver module also can produce difference, certainly will cause the temperature of molten salt of each receiver module output to have nothing in common with each other if adopt prior art promptly by firm discharge balance control connection device the flow of fused salt in each receiver module to be regulated.This shows, the assignment of traffic control that the working medium fused salt employing of importing in each receiver module is fixed is unsuitable, the variation of adaptation condition effectively of firm discharge balance control connection device, can not realize the optimum of central receiver operation efficient, and then also be unfavorable for improving the operating efficiency in power plant.
Summary of the invention
In order to solve the defective that above-mentioned prior art exists, reduce system operation cost, realize the optimum of central receiver operation efficient, the present invention has disclosed self-adapting solar energy heat collection molten salt receiver system and the method that a kind of adaptation condition automatically changes and realize each receiver module output temperature of molten salt balance.
The present invention comprises as a kind of self-adapting solar energy heat collection molten salt receiver system: the sloppy heat salt holding vessel that sloppy heat salt is provided for receiver system; The fault-tolerant pump for liquid salts induction system of one cover can be guaranteed the sloppy heat salt in the sloppy heat salt holding vessel stably to be transported to central receiver and to impel it to flow, thereby can prevent that central receiver is because of overheated and impaired; By a plurality of central receivers that have input port and delivery outlet and form towards the receiver module of different azimuth respectively, each receiver module of described central receiver all has a control system of its input port fused salt flow independently being regulated according to the height of its delivery outlet temperature of molten salt; A hot melt salt buffer jar that is positioned at described each receiver module top, its top links to each other with the delivery outlet of each receiver module, and its outlet then links to each other with a downcomer, so that hot melt salt is transported to the fused salt electricity generation system; A flow control valve that is installed on the described downcomer, the scope that is used for controlling the fused salt amount of described hot melt salt buffer jar and makes it to remain on setting; Turbine near described flow control valve is used for the potential energy of recycling hot melt salt; With a hot melt salt holding vessel, be used to store descending and finally transport to the hot melt salt of fused salt electricity generation system from downcomer.
Fused salt induction system among the present invention adopts fault-tolerant design, have at least delivery pump more than two to work simultaneously in the described system and all be in non-full load condition, when wherein certain delivery pump broke down or quits work, electronic-controlled installation will instruct other delivery pumps to strengthen the conveying capacity of sloppy heat salt to satisfy the demand of each receiver module to sloppy heat salt.In order to guarantee the power supply supply of described delivery pump, each delivery pump all has more than one power source, thereby guarantees that electronic-controlled installation just makes it to automatically switch to another power source when one of them lost efficacy.
Each receiver module among the present invention all includes many parallel endothermic tubes, has a temperature sensor at least on the described every parallel endothermic tube, is used to monitor the temperature of parallel endothermic tube; The top delivery outlet of each receiver module and input port, bottom all have a temperature sensor and a pressure sensor respectively, wherein, described temperature sensor is used to monitor the temperature of output fused salt, and pressure sensor is used for monitoring the pressure of input port pipeline fused salt.Each receiver module also includes a microprocessor controller, this microprocessor controller is by handling the delivery outlet temperature sensor of described receiver module, parallel endothermic tube temperature sensor and input port pressure sensor institute data monitored, and the flow control valve of input port, described receiver module bottom is assigned instruction according to the default temperature value of whole receiver system, thereby, guarantee the balance of each receiver module output temperature of molten salt and be consistent with the temperature value of default by regulation and control to each receiver module inlet fused salt flow.
Hot melt salt buffer jar among the present invention also includes a liquid level sensor that is used for monitoring described hot melt salt buffer jar hot melt salt amount, and one prevents that it is because of superpressure impaired a urgent pressure regulator and an air bleeding valve that links to each other with hot melt salt holding vessel.In order to make the hot melt salt amount in the hot melt salt buffer jar remain on default scope, the liquid level information of fused salt is controlled flow control valve in the hot melt salt buffer jar that microprocessor can be monitored according to described liquid level sensor, thereby regulates the fused salt amount in the surge tank.
The present invention also further comprises an emergent fused salt stocking system, promptly when the molten salt receiver system maintenance or need overhaul because of other reasons time of require stopping transport of in running, breaking down, just the fused salt in residue fused salt in pipeline, each receiver module and the sloppy heat salt holding vessel all can be discharged in emergent jar, pending fault is got rid of or maintenance finishes, utilize delivery pump that sloppy heat salt holding vessel is gone in the fused salt loopback in the emergent jar again, recover normal operation use in order to system.
The present invention also disclosed a kind of by independence of each receiver module output temperature of molten salt is regulated and control to make the mutual balance of its output temperature and with the corresponding to method of default temperature value, implementation step comprises: at first, each receiver module of described central receiver is installed in central authorities receives the top of tower and make it towards different orientation; Open the flow control valve of each input port, receiver module bottom then, described each receiver module heat absorption of sloppy heat salt input; Hot melt salt after the heat absorption flows to hot melt salt buffer jar from the delivery outlet of each receiver module; The temperature sensor of each receiver module delivery outlet is transferred to the output temperature of molten salt that monitors the microprocessor controller of each receiver module more in real time; Temperature sensor on the parallel endothermic tube with Ge Gen of pressure sensor of each receiver module input port also can be transferred to the information that monitors the microprocessor controller of each receiver module in real time simultaneously; Described microprocessor controller is assigned instruction according to the information that receives and the temperature value of default to described flow control valve again, regulate and control the sloppy heat salt input quantity of each receiver module, thereby regulate the temperature of each receiver module output fused salt and make it consistent with the temperature value of default.
Wherein said microprocessor controller comprises two kinds of situations to the regulation and control of each receiver module sloppy heat salt input quantity: when described receiver module output temperature of molten salt is higher than the default temperature value, microprocessor controller will instruct described flow control valve to increase the flow of this receiver module inlet fused salt, thereby reduces the temperature of its output fused salt; When described receiver module output temperature of molten salt was lower than the default temperature value, microprocessor controller will instruct described flow control valve to reduce the flow of this receiver module inlet fused salt, thereby improved the temperature of its output fused salt.
The present invention is by adopting the technology that each receiver module in the central receiver is independently controlled, make each receiver module automatically adaptation condition variation and realize the balance of each receiver module output temperature of molten salt, thereby can guarantee the optimum of receiver system operating efficiency, and finally improve the operating efficiency of whole generating factory.In addition, pump for liquid salts induction system of the present invention adopts fault-tolerant design, not only can guarantee provides stable fused salt supply to receiver system, compares to simultaneously to utilize this conventional method of pressurization sloppy heat salt holding vessel cooling receiver, can also the reduction system invest the cost that moves.
Description of drawings
Fig. 1 the present invention's self-adapting solar energy heat collection molten salt receiver system structure chart;
Fig. 2 the present invention's single receiver module schematic diagram;
Fig. 3 the present invention's receiver module control schematic diagram;
The electronic control system block diagram of Fig. 4 the present invention's receiver module;
Fig. 5 the present invention's fault-tolerant pump for liquid salts induction system block diagram.
The specific embodiment
As a kind of preferred embodiment, as shown in Figure 1, the present invention includes: a sloppy heat salt holding vessel 113, one emergent jar 116, the fault-tolerant pump for liquid salts induction system of one cover, by a plurality of receiver modules 161 (1,2 with adaptivity ... N) the central receiver of Zu Chenging, and hot melt salt buffer jar 109 that has liquid fused salt level sensor 108,110, one of flow control valves can recycling hot melt salt potential energy turbine 111 and energy hot melt salt holding vessel 112 that hot melt salt is provided for the fused salt electricity generation system.
As shown in Figure 1, sloppy heat salt holding vessel 113 provides system required sloppy heat salt, delivery pump 103 and 104 is transported to sloppy heat salt and is positioned on the central receiver that receives tower (not shown) top from sloppy heat salt holding vessel 113, central receiver is by a plurality of receiver modules 161 (1,2 towards different azimuth ... N) form.The delivery outlet of each receiver module 161 all has a temperature sensor 181, is used to monitor the temperature of this module output fused salt.All there are a pressure sensor 141 and a flow control valve 121 in the input port of each receiver module 161, wherein the effect of pressure sensor 141 be by to the real-time monitoring of receiver module 161 inlet pressures to guarantee the supply of fused salt, flow control valve 121 can adopt electric model or other can reach the pattern of equal effect, its role is to according to the output temperature of molten salt of 181 monitorings in real time of temperature sensor and the temperature value of default the fused salt flow of receiver module inlet be regulated and control, concrete control mode hereinafter will have detailed explanation.Pressure sensor 105 is used for monitoring to all receiver modules 161 (1,2 ... N) pressure of fused salt among the house steward of conveying fused salt.
The delivery outlet of each receiver module 161 all links to each other with the top of hot melt salt buffer jar 109, and hot melt salt buffer jar 109 is positioned at the tip position that central authorities receive tower, and a little higher than central receiver of being made up of a plurality of receiver modules 161.The sloppy heat salt of carrying by delivery pump each receiver module 161 of flowing through, become overheated fused salt after the heat absorption, flow into hot melt salt buffer jar 109 through delivery outlet then, enter each receiver module 161 in order to prevent that hot melt salt from refluxing from surge tank 109, surge tank 109 can not be full of fused salt fully and will more partially filled in the above gases, as nitrogen etc.Described hot melt salt buffer jar 109 links to each other with the hot melt salt holding vessel 112 that is positioned at central authorities' reception tower bottom by air bleeding valve 107, thereby guarantee when the air pressure in the described surge tank 109 is lower than an atmospheric pressure, can obtain enough hot gas supplies from hot melt salt holding vessel 112.When the pressure of described surge tank 109 reached its design maximum, the urgent pressure regulator 106 of being located at its top will outwards discharge gas, thereby prevented that surge tank 109 and central receiver are impaired because of superpressure.
In order to prevent that the hot melt salt in the surge tank 109 from refluxing to receiver, perhaps avoid gas to enter the outlet of surge tank 109, the liquid level of hot melt salt must be controlled within certain scope in the above-mentioned surge tank, liquid fused salt level sensor 108 can be monitored the liquid level of hot melt salt in the surge tank 109 in real time, and provide the liquid level information of hot melt salt in the surge tank 109 in real time to the microprocessor controller (not shown), microprocessor controller is assigned instruction according to the information that liquid fused salt level sensor 108 transmits to the hot melt salt flow control valve 110 that is installed on the downcomer 118, make the fused salt amount in the surge tank 109 remain on default scope by the adjusting to hot melt salt flow, wherein said hot melt salt flow control valve 110 adopts electric model maybe can obtain other patterns of equal effect.
The capacity of hot melt salt buffer jar 109 or the size of size depend on the height of the peak flow values of the length of 110 response times of hot melt salt control valve and fused salt.Even if but the fused salt liquid level in the surge tank 109 is when being lower than preset value, must guarantee in the surge tank 109 has sufficient fused salt, makes the fused salt amount in the surge tank 109 return to default level by the modes that reduce hot melt salt flow if having time to guarantee control valve 110.
Hot melt salt buffer jar 109 also links to each other with hot melt salt holding vessel 112 by downcomer 118, so that make hot melt salt flow into the hot melt salt holding vessel 112 that hot melt salt is provided for electricity generation system from the hot melt salt buffer jar 109 that receives top of tower.Because central authorities receive tower higher (in the present embodiment, central authorities receive about 110 meters of tower height), are arranged in the hot melt salt that receives top of tower hot melt salt buffer jar 109 and have contained huge potential energy, the potential energy of hot melt salt is converted into kinetic energy in the decline process.Hot melt salt is before flowing into hot melt salt holding vessel 112, be admitted to turbine 111 earlier, further described kinetic energy is converted into electric energy with turbine 111 generator coupled (not shown), so just can recycling hot melt salt holding vessel 112 in the potential energy of hot melt salt.
Each receiver module 161 in central authorities' receiver all includes many parallel endothermic tubes, as shown in Figure 2, the sloppy heat salt that delivery pump is carried is from inlet 202 inputs of receiver module bottom, after distribution header 201 uniform distributions, flow into each parallel endothermic tube 203, absorb hot melt salt after the solar thermal energy and export from delivery outlet 205 through compiling house steward 204 and compiling the back on the receiver module top.For the fused salt uniform distribution between a plurality of parallel endothermic tubes 203 that realizes importing, distribution header 201 should be kept certain pressure ratio with the fused salt in the parallel endothermic tube 203, and this pressure ratio can form by nozzle connector between distribution header 201 and parallel endothermic tube 203.
Because central authorities of system receiver is by a plurality of receiver modules 161 (1,2 ... N) form, the installation site that each receiver module receives top of tower in central authorities has nothing in common with each other and respectively towards different orientation, and exist difference towards the sun light quantity that the receiver module of different azimuth receives from the reflection of heliostat field, if the fused salt in all receiver modules is all adopted fixing flow-control, the so this temperature of molten salt that will cause each receiver module to be exported because of the thermal-arrest difference that produces towards different azimuth has nothing in common with each other.And under the situation of utilizing fused salt as working media, the operating temperature of system and the maximum operation (service) temperature of fused salt are very approaching, if the temperature of molten salt of each receiver module output is inconsistent, will reduce the highest output temperature of receiver, and the temperature of molten salt difference of different receiver module outputs is big more, the highest output temperature of central authorities' receiver will be low more, thereby the operating efficiency in power plant also can be low more.
For the temperature of molten salt that makes the output of each receiver module near consistent, the difference of the sun light quantity that the flow of fused salt should receive according to each receiver module in each receiver module is made corresponding adjustment.This need be by means of temperature sensor, fused salt flow control valve and the Electronic Control of each receiver module finished, as shown in Figure 3, sloppy heat salt 306 is from the bottom input of receiver module, flow through and become hot melt salt 307 after the heat absorption of parallel endothermic tube and export from the receiver top, the outlet of each receiver module 161 all has a temperature sensor 181 to be used for the temperature of monitoring receiver module outlet fused salt, also have at least a temperature sensor 302 to be used for monitoring the temperature of each parallel endothermic tube on the every parallel endothermic tube of described receiver module, inlet at each receiver module 161 also has a pressure sensor 141 and a flow control valve 121, wherein said pressure sensor 141 is used for monitoring the pressure of input port pipeline fused salt, and 121 instructions according to microprocessor controller 301 of described control valve are regulated the flow of receiver module inlet fused salt.Concrete Electronic Control structure as shown in Figure 4, output temperature of molten salt sensor 181, parallel endothermic tube temperature sensor 302 are transferred to microprocessor controller 301 to the numerical value of the relevant temperature and pressure that monitors with pressure sensor 141, microprocessor controller 301 sends instruction after handling through internal processes, regulates by the flow of 121 pairs of receiver module inlets of flow control valve fused salt.In order to ensure the effective regulation and control to each receiver module input fused salt flow, flow control valve 121 adopts fault-tolerant designs, in order to the inefficacy of itself or system.
In the present invention, each receiver module 161 all can independently be regulated its input fused salt flow according to its height of exporting temperature of molten salt, and the operating temperature value of systemic presupposition and the height of each receiver module delivery outlet output temperature of molten salt are depended in the adjusting of 121 pairs of receiver modules of flow control valve, 161 inlet fused salt flows.The temperature sensor 181 of each receiver module delivery outlet all can be monitored the temperature of this module output fused salt in real time, and in real time Monitoring Data is transferred to the microprocessor controller 301 of this receiver module, 301 of microprocessor controllers compare the temperature value of these data and systemic presupposition in real time, when the temperature of molten salt value of output surpasses the systemic presupposition value, microprocessor controller will increase the flow of receiver module inlet fused salt by adjusting flow control valve 121, allow more sloppy heat salt flow into receiver module, thereby the temperature that reduces this receiver module output fused salt make it return to the systemic presupposition value; And when the temperature of molten salt of output was lower than the systemic presupposition value, microprocessor controller will reduce the flow of receiver modules inlet fused salts by adjustment flow control valve 121, thereby the temperature that improves the output fused salt reaches the requirement of systemic presupposition until it.Because each receiver module all can be regulated and control the fused salt flow of self according to the preset temperature of system in real time, thereby the temperature of molten salt of its output and the preset temperature of system are consistent, this adaptivity feature of each receiver module can realize the balance of its output temperature of molten salt effectively, and impels central receiver system to reach the maximum of its effective operating temperature.
In order to ensure stably carrying enough sloppy heat salt and prevent described receiver module because of overheated and impaired to each receiver module, the present invention also further comprises the fault-tolerant pump for liquid salts induction system of a cover.Described fused salt induction system adopts fault-tolerant design to avoid the influence of Single Point of Faliure to system's operation, and promptly when certain delivery pump or power supply were broken down, fault-tolerant pump for liquid salts induction system still can be carried sloppy heat salt to receiver.As shown in Figure 5, in this fault-tolerant pump for liquid salts induction system, all the time there is delivery pump (only showing two pumps 103 and 104 among the figure) more than two to work simultaneously and all is in the non-state of operating at full capacity, promptly this fault-tolerant pumping system adopts two-way or multichannel to extract the method for sloppy heat salt, and the sloppy heat salt in the sloppy heat salt holding vessel 113 is transported to each receiver module 161 (1,2 through delivery trunk 119 ... N) to satisfy the needs of system.The delivery pump delivery outlet on each road all has a pressure sensor (507,508) and a check valve (509,510), wherein said pressure sensor (507,508) is used to monitor the pressure of each road output fused salt, and described check valve (509,510) is used to prevent delivery pump (103,104) backflow of fused salt when breaking down.
The working power of described every delivery pump (103,104) all has two power systems, and one another is from internal electric source 501 from external electrical network 503, and wherein internal electric source also comprises a uninterrupted power source 502 of 60 seconds.By power selection switch (512,513), when one road power supply disconnected or quits work, described power selection switch selected another working power to guarantee the operate as normal of described delivery pump at once.When the described delivery pump in certain road breaks down can not work the time, the work on this road stops, the electronic-controlled installation (not shown) will instruct the delivery pump on other roads to strengthen the conveying capacity of fused salt, make the fused salt total amount of induction system output still can satisfy the demand of each receiver module to fused salt, pressure sensor 511 is used for monitoring the pressure of fused salt induction system delivery trunk 119 fused salts.
In addition, maintenance that this molten salt receiver system may hinder in running for some reason or other reasons is stopped transport just needs the residue fused salt in emptying pipe or the receiver module this moment.One of approach is exactly to open the valve 114 that connects sloppy heat salt holding vessel 113 and fused salt delivery trunk 119, allows in central receiver and the pipeline remaining fused salt reflux by valve 114 and enters sloppy heat salt holding vessel 113.But when whole system break down or stop transport maintenance or when requiring to 113 maintenance of sloppy heat salt holding vessel, just need open the valve 120 that connects sloppy heat salt holding vessel 113 and emergent jar 116, also open simultaneously the emergency valve 115 that connects fused salt delivery trunk 119 and emergent jar 116, allow sloppy heat salt holding vessel 113, fused salt delivery pump (103,104) and each receiver module 161 (1,2 ... N) and ducted fused salt all flow into emergent jar 116, treat that system overhaul finishes, utilize delivery pump 117 that the fused salt in the emergent jar 116 is transmitted back to sloppy heat salt holding vessel 113 again and recover normal operation use in order to system.
Claims (16)
1. a self-adapting solar energy heat collection molten salt receiver system comprises: a sloppy heat salt holding vessel (113); One cover is used for sloppy heat salt is transported to central receiver and impels its mobile fault-tolerant pump for liquid salts induction system from described sloppy heat salt holding vessel; The central receiver that input port and top delivery outlet are also formed towards the receiver module (161) of different azimuth respectively bottom a plurality of having, each receiver module (161) of described central receiver all has a control system of its input port fused salt flow independently being regulated according to the height of its delivery outlet temperature of molten salt; A hot melt salt buffer jar (109), this hot melt salt buffer jar (109) are positioned at described each receiver module (161) top and its top links to each other with the delivery outlet of described each receiver module; One links to each other with described hot melt salt buffer jar (109) outlet and also can transport to hot melt salt the downcomer (118) of fused salt electricity generation system; A flow control valve (110) that is installed on the described downcomer (118), the scope that is used for controlling the fused salt amount of described hot melt salt buffer jar (109) and makes it to remain on setting; Turbine (111) near described flow control valve (110); With a hot melt salt holding vessel (112), be used for storing descending and finally transport to the hot melt salt of fused salt electricity generation system from downcomer (118); The top delivery outlet of described each receiver module (161) all has a temperature sensor (181), is used to monitor the temperature of each receiver module output fused salt; All there is a pressure sensor (141) input port, bottom of described each receiver module (161), is used for monitoring the pressure of input port pipeline fused salt; Described each receiver module (161) all includes many parallel endothermic tubes (203), has a temperature sensor (302) on the described every parallel endothermic tube (203) at least, is used to monitor the temperature of described parallel endothermic tube; All there is a flow control valve (121) input port, bottom of described each receiver module (161), its role is to according to the instruction of microprocessor controller (301) flow of described each receiver module bottom input port input fused salt be regulated.
2. receiver system according to claim 1, wherein said fault-tolerant pump for liquid salts induction system includes the delivery pump (103,104) more than two at least, and described delivery pump is worked simultaneously and all is in non-full load condition.
3. receiver system according to claim 2, fault-tolerant pump for liquid salts induction system also includes an electronic-controlled installation, when wherein certain delivery pump broke down or quits work, described electronic-controlled installation will instruct other delivery pumps to strengthen the feed flow of sloppy heat salt to satisfy the demand of each receiver module (161) to sloppy heat salt.
4. according to claim 2 or 3 described receiver systems, every delivery pump (103,104) delivery outlet all has a pressure sensor (507,508) and a check valve (509,510), described pressure sensor is used to monitor the pressure of this road delivery pump output fused salt, and described check valve is used to prevent that fused salt refluxes to delivery pump when this road delivery pump from breaking down.
5. according to claim 2 or 3 described receiver systems, the working power of wherein said every delivery pump all has two power systems, one another is from internal electric source (501) from external electrical network (503), and wherein internal electric source also comprises a uninterrupted power source (502) of 60 seconds.
6. receiver system according to claim 5, the working power of wherein said every delivery pump all includes two power selection switch (512,513), when one tunnel working power disconnects or quits work, power selection switch selects another working power to guarantee the power supply of delivery pump (103,104) at once.
7. receiver system according to claim 1, wherein said each receiver module (161) all includes a microprocessor controller (301), described microprocessor controller (301) is to the delivery outlet temperature sensor (181) of described receiver module, parallel endothermic tube temperature sensor (302) and input port pressure sensor (141) institute data monitored are handled, and the flow control valve (121) of input port, described receiver module bottom is assigned instruction: when the temperature of molten salt of described receiver module output surpasses the systemic presupposition value according to the default temperature value of whole receiver system, microprocessor controller (301) just instructs the flow control valve (121) of input port, described receiver module bottom to increase the flow of receiver module inlet fused salt, thereby the temperature that reduces this receiver module output fused salt makes it return to the level of systemic presupposition; And when the temperature of molten salt of described receiver module output is lower than the systemic presupposition value, microprocessor controller (301) just instructs the flow control valve (121) of input port, described receiver module bottom to reduce the flow of this receiver module inlet fused salt, reaches the requirement of systemic presupposition thereby improve the temperature of exporting fused salt until it.
8. receiver system according to claim 1, hot melt salt buffer jar (109) also includes a liquid level sensor (108), is used for monitoring the liquid level of described hot melt salt buffer jar (109) hot melt salt.
9. according to claim 1 or 8 described receiver systems, hot melt salt buffer jar (109) also includes a urgent pressure regulator (106).
10. according to claim 1 or 8 described receiver systems, hot melt salt buffer jar (109) also includes an air bleeding valve (107), and described hot melt salt buffer jar (109) links to each other with hot melt salt holding vessel (112) by described air bleeding valve (107).
11. receiver system according to claim 8, also include a microprocessor controller, the liquid level information that is used for hot melt salt buffer jar (109) fused salt of being monitored according to described liquid level sensor (108) is controlled flow control valve (110), so that the hot melt salt amount in the described surge tank (109) remains on default scope.
12. receiver system according to claim 1 also includes one emergent jar (116).
13. receiver system according to claim 12, described emergent jar (116) link to each other with fused salt delivery trunk (119) by emergency valve (115), and simultaneously described emergent jar (116) also link to each other with sloppy heat salt holding vessel (113) by valve (120).
14. receiver system according to claim 12 also includes a delivery pump (117), is used for the fused salt loopback of emergent jar (116) is entered sloppy heat salt holding vessel (113).
15. control the central receiver output temperature of molten salt of the described self-adapting solar energy heat collection molten salt receiver system of claim 1 automatically and make it the method consistent for one kind with the default temperature value, implementation step is as follows: at first, each receiver module (161) of described central receiver is installed in central authorities receives the top of tower and make it towards different orientation; Open the flow control valve (121) of each input port, receiver module bottom then, sloppy heat salt described each receiver module of input (161) heat absorption; Hot melt salt after the heat absorption flows to hot melt salt buffer jar (109) through the delivery outlet of each receiver module; The temperature sensor of each receiver module delivery outlet (181) is transferred to the output temperature of molten salt that monitors the microprocessor controller (301) of each receiver module more in real time; Simultaneously the pressure sensor (141) of each receiver module input port and the temperature sensor (302) on the parallel endothermic tube of each root (203) also can be transferred to the information that monitors the microprocessor controller (301) of each receiver module (161) in real time; Described microprocessor controller (301) is assigned instruction according to the temperature value of information that receives and default to the flow control valve (121) of described each input port, receiver module bottom again, regulate and control the sloppy heat salt input quantity of each receiver module (161), thereby regulate the temperature of each receiver module output fused salt and make it consistent with the temperature value of default.
16. method according to claim 15, wherein said microprocessor controller (301) comprises two kinds of situations to the regulation and control of each receiver module (161) sloppy heat salt input quantity: when described receiver module (161) output temperature of molten salt is higher than the default temperature value, microprocessor controller (301) will instruct the flow control valve (121) of described each input port, receiver module bottom to increase the flow of this receiver module inlet fused salt, thereby reduces the temperature of its output fused salt; When described receiver module (161) output temperature of molten salt is lower than the default temperature value, microprocessor controller (301) will instruct the flow control valve (121) of described each input port, receiver module bottom to reduce the flow of this receiver module inlet fused salt, thereby improves the temperature of its output fused salt.
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| CN200810059840XA CN101240947B (en) | 2008-02-19 | 2008-02-19 | Self-adapting solar energy heat collection molten salt receiver system |
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| CN101240947B true CN101240947B (en) | 2010-12-08 |
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Families Citing this family (14)
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| ES2363288B1 (en) * | 2010-01-15 | 2012-02-27 | Abengoa Solar New Technologies S.A. | SOLAR RECEIVER OF FOUNDED SALTS AND PROCEDURE TO REDUCE THERMAL GRADIENT IN SUCH RECEPTOR. |
| CN101915224B (en) * | 2010-08-06 | 2012-05-30 | 绍兴文理学院 | Tower type solar energy circulating heat power generating system |
| CN102563867B (en) * | 2012-01-17 | 2014-05-07 | 杭州锅炉集团股份有限公司 | Solar-heating assisted salt melting system |
| EP2855861B1 (en) | 2012-05-25 | 2016-07-13 | Cockerill Maintenance & Ingéniérie S.A. | Coupling of a turbopump for molten salts |
| BE1020701A3 (en) * | 2012-05-25 | 2014-03-04 | Cockerill Maintenance & Ingenierie | COUPLING OF TURBOPOMPE FOR FILLED SALTS. |
| CN103485990A (en) * | 2013-09-29 | 2014-01-01 | 北京首航艾启威节能技术股份有限公司 | Device and method for improving generating efficiency of fused salt tower type solar thermal power station |
| US9605879B2 (en) * | 2013-11-08 | 2017-03-28 | Alstom Technology Ltd. | System and method for controlling molten salt temperature |
| CN106438237A (en) * | 2015-08-10 | 2017-02-22 | 中国电力工程顾问集团华北电力设计院有限公司 | Molten salt and conduction oil double heat storage solar thermal power generating system |
| CN105649900A (en) * | 2016-03-10 | 2016-06-08 | 北京首航艾启威节能技术股份有限公司 | System for efficiently reducing auxiliary power of molten-salt tower type solar photo-thermal power generation station |
| CN106247621B (en) * | 2016-10-10 | 2021-09-28 | 江苏鑫晨光热技术有限公司 | Distributed heat collection and energy storage system |
| CN109579326B (en) * | 2017-09-28 | 2020-07-14 | 上海电气集团股份有限公司 | Exhaust salt dredging method for molten salt heat absorber |
| CN107906489B (en) * | 2017-11-30 | 2024-03-19 | 中冶南方都市环保工程技术股份有限公司 | Energy storage system for isolated power grid |
| CN109556304B (en) * | 2019-01-14 | 2024-07-05 | 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 heat absorption system and control method thereof |
| CN110108049B (en) * | 2019-06-06 | 2023-11-21 | 中国能源建设集团陕西省电力设计院有限公司 | Device and method for measuring spot energy and heat flux density of solar concentrator |
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