CN104422148A - Column-type acceptor for solar tower-type thermal electricity generation and application method thereof - Google Patents
Column-type acceptor for solar tower-type thermal electricity generation and application method thereof Download PDFInfo
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- CN104422148A CN104422148A CN201310397276.3A CN201310397276A CN104422148A CN 104422148 A CN104422148 A CN 104422148A CN 201310397276 A CN201310397276 A CN 201310397276A CN 104422148 A CN104422148 A CN 104422148A
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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
- Y02E10/44—Heat exchange systems
Abstract
The invention provides a column-type acceptor for solar tower-type thermal electricity generation and an application method thereof. The acceptor comprises a tower body support frame supporting a thermal-collecting acceptor, a top sealing cap is fixedly mounted on the top portion of the thermal-collecting acceptor, an insulation layer is arranged on the periphery of the thermal-collecting acceptor in a sleeve mode by an insulation layer support frame, a mechanism matching with an insulation layer lifter is mounted inside the insulation layer, and the insulation layer moves vertically along the for on-line automatic data filling and reporting insulation layer lifter under the action of external force. When heat preservation is needed for the thermal-collecting acceptor, the insulation layer is moved upwards to the top portion and fully covers the thermal-collecting acceptor, and moreover, the periphery of the insulation layer is sealed tightly with the top sealing cap. By a closeable insulation device, the heat loss of the heat-collecting acceptor at low temperature and in high wind weather can be decreased effectively, and the risk of solidification of the heat-conducting medium in the heat-collecting acceptor can also be avoided effectively. In addition, the column-type acceptor for solar tower-type thermal electricity generation also has the advantages of simple structure and convenience in control and enables quick protection of the heat-collecting acceptor to be achieved.
Description
Technical field
The invention belongs to application of solar, be specifically related to a kind of solar energy tower type thermal generation column type receiver and apply the method for this receiver.
Background technology
Solar energy thermal-power-generating technology solves one of effective way of environmental pollution and energy crisis at 21 century.Solar energy thermal-power-generating mainly comprises slot type, dish-style and tower three kinds of modes.Wherein, tower type solar energy thermal power generation is forms of electricity generation the most economic in large-sized solar generating.
For tower-type solar thermal power generating system, heat collecting receiver is the critical piece absorbing solar radiation energy, melt salt at heat collecting receiver internal circulation, salt is melted in the heat collecting receiver solar energy heating absorbed, and follow-up is that electric energy generates electricity again by the thermal energy of high-temperature molten salt.
In prior art, under low temperature and strong wind weather, heat collecting receiver heat loss is serious, thus reduces the generating efficiency of tower-type solar thermal power generating system; And, also there is the frozen risk of heat collecting receiver, heat collecting receiver cannot normally be used.
Summary of the invention
For the defect that prior art exists, the invention provides a kind of solar energy tower type thermal generation column type receiver and apply the method for this receiver, under can effectively reducing low temperature and strong wind weather, the heat loss of heat collecting receiver, can also avoid heat collecting receiver frozen.
The technical solution used in the present invention is as follows:
The invention provides a kind of solar energy tower type thermal generation column type receiver, comprising: tower body bracing frame, heat collecting receiver, top seal lid, heat-insulation layer, heat-insulation layer support stand and heat-insulation layer lifter;
Wherein, described tower body bracing frame supports described heat collecting receiver; Described top seal lid is fixedly installed on the top of described heat collecting receiver; Described heat-insulation layer is set in the periphery of described heat collecting receiver by described heat-insulation layer support stand, and described heat-insulation layer inside is provided with the mechanism supporting with described heat-insulation layer lifter, and under external force, described heat-insulation layer moves up and down along described heat-insulation layer lifter;
When described heat collecting receiver needs insulation, when described heat-insulation layer is moved upwards up to top, described heat-insulation layer covers described heat collecting receiver completely, and, the periphery of described heat-insulation layer and described top seal lid tight seal;
When described heat collecting receiver needs to absorb solar radiation energy, described heat-insulation layer is moved down into bottom, described heat-insulation layer is positioned at the below of described heat collecting receiver completely, and described heat collecting receiver is all arranged in external environment.
Preferably, described heat collecting receiver is townhouse cast heat collecting receiver, comprises n group thermal-arrest receiving unit, and each group thermal-arrest receiving unit surrounds circle; N >=1, n is natural number;
Each group thermal-arrest receiving unit comprises: local terminal heat collection unit, opposite end heat collection unit and top jumper pipe; Described local terminal heat collection unit is communicated with by described top jumper pipe with described opposite end heat collection unit; Further, described local terminal heat collection unit and described opposite end heat collection unit are symmetricly set on the both sides of described circle, described local terminal heat collection unit towards solar radiation energy-flux density higher than described opposite end heat collection unit towards solar radiation energy-flux density.
Preferably, described local terminal heat collection unit is identical with the structure of described opposite end heat collection unit;
Described local terminal heat collection unit comprises: the first bottom townhouse pipe, first group of thermal-collecting tube and the first top townhouse pipe; Described first group of thermal-collecting tube is made up of many thermal-collecting tube a; Each thermal-collecting tube a be arranged in parallel, and the bottom of each thermal-collecting tube a is communicated with described first bottom townhouse pipe, and the top of each thermal-collecting tube a is communicated with described first top townhouse pipe;
Described opposite end heat collection unit comprises: the second bottom townhouse pipe, second group of thermal-collecting tube and the second top townhouse pipe; Described second group of thermal-collecting tube is made up of many thermal-collecting tube b; Each thermal-collecting tube b be arranged in parallel, and the bottom of each thermal-collecting tube b is communicated with described second bottom townhouse pipe, and the top of each thermal-collecting tube b is communicated with described second top townhouse pipe;
One end of described top jumper pipe is communicated with described first top townhouse pipe, and the other end of described top jumper pipe is communicated with described second top townhouse pipe.
Preferably, n=3.
Preferably, internal flame hot type heat dump is also provided with in the inside of described heat collecting receiver.
Preferably, described internal flame hot type heat dump comprises: gas spray head, gas flow control valve, hygrosensor and controller; Described gas spray head is arranged on the inside of described heat collecting receiver, and described gas flow control valve installed by the gas pipeline of described gas spray head; Described hygrosensor is also arranged on the inside of described heat collecting receiver, and the output of described hygrosensor is connected with the input of described controller, and the output of described controller is connected with described gas flow control valve.
Preferably, salt discharge mechanism is also comprised;
Described salt discharge mechanism comprises: air accumulator and surge tank; Described air accumulator is communicated with described surge tank by the first gas pipeline; Controlled valve installed by described first gas pipeline; Described surge tank is communicated with described heat collecting receiver by the second gas pipeline; Electric control valve installed by described second gas pipeline; Further, described surge tank is also provided with pressure gauge.
The present invention also provides a kind of method of applied solar energy tower type thermal generation column type receiver, comprises the following steps:
S1, at the sheathed heat-insulation layer in the periphery of heat collecting receiver;
S2, when described heat collecting receiver needs insulation, described heat-insulation layer is moved upwards up to top along heat-insulation layer lifter, and described heat-insulation layer covers described heat collecting receiver completely, and, the periphery of described heat-insulation layer and top seal lid tight seal;
When described heat collecting receiver needs to absorb solar radiation energy, described heat-insulation layer is moved down into bottom along heat-insulation layer lifter, and described heat-insulation layer is positioned at the below of described heat collecting receiver completely, and described heat collecting receiver is all arranged in external environment.
Preferably, also comprise:
When described heat collecting receiver work, first heat-conducting medium flows into the first bottom townhouse pipe of local terminal heat collection unit, first group of thermal-collecting tube is upwards flowed into again from the first bottom townhouse pipe, the first top townhouse pipe is flowed into again from first group of thermal-collecting tube, top jumper pipe is flowed into again from the first top townhouse pipe, the second top townhouse pipe of opposite end heat collection unit is flowed out to again from top jumper pipe, second group of thermal-collecting tube is flow into downwards again from the second top townhouse pipe, flow out to the second bottom townhouse pipe from second group of thermal-collecting tube again, finally discharge from the second bottom townhouse pipe.
Preferably, also comprise:
Also be provided with internal flame hot type heat dump in the inside of described heat collecting receiver, the course of work of described internal flame hot type heat dump is:
Combustion gas supplies combustion gas by gas pipeline to gas spray head, and gas spray head burning produces heat and heats the inner space of heat collecting receiver; Wherein, the temperature value of hygrosensor Real-time Collection heat collecting receiver inner space, and the temperature value collected is transferred to controller, controller judges that whether this temperature value is higher than setting value, if higher than, then regulation gas flow control valve, reduces the gas quantity to gas spray head supply, and then reduce the heat of gas spray head generation, make heat collecting receiver internal temperature be tending towards setting value gradually; If lower than setting value, then regulation gas flow control valve, increases the gas quantity to gas spray head supply, and then improves the heat of gas spray head generation, makes heat collecting receiver internal temperature be tending towards setting value gradually;
Also comprise salt discharge mechanism, the course of work of described salt discharge mechanism is:
Under normal circumstances, open controlled valve, air accumulator carries gas to surge tank, by pressure gauge monitoring surge tank internal pressure value;
When needs salt discharge, open electric control valve, the gas stored in surge tank enters heat collecting receiver, and heat collecting receiver discharged by the melting salt promoting heat collecting receiver inside.
Beneficial effect of the present invention is as follows:
(1) adopting can the attemperator of closed type, and under can being effectively reduced in low temperature and strong wind weather, the heat loss of heat collecting receiver, also effectively can avoid the frozen risk of heat collecting receiver.In addition, also have structure simple, control easy advantage, the protection to heat collecting receiver can be realized fast.
(2) heat collecting receiver adopts multistage string hybrid connected structure, ensures all thermal-collecting tubes all relative radiation balances; Avoid the thermal-collecting tube unbalanced stress because inequality of being heated causes simultaneously, and the appearance of the inner heat-conducting medium solidification phenomenon of the thermal-collecting tube that some is subject to solar radiation lower when Low emissivity.
(3) by arranging internal flame hot type heat dump in the inside of heat collecting receiver, the frozen risk of the inner heat-conducting medium of heat collecting receiver can be prevented.
(4) when the melting salt in heat collecting receiver cannot be discharged, by salt discharge mechanism, salt discharge in time fast can be realized, the melting salt freezing accident avoiding salt discharge to cause not in time.
Accompanying drawing explanation
Fig. 1 is the structural representation of the heat collecting receiver of band heat-insulation layer provided by the invention;
Fig. 2 is the structural representation after Fig. 1 removes heat-insulation layer;
Fig. 3 is the structural representation of heat-insulation layer and heat collecting receiver relative position under duty provided by the invention;
Fig. 4 is the structural representation of heat-insulation layer and heat collecting receiver relative position under keeping warm mode provided by the invention;
Fig. 5 is the top view of townhouse cast heat collecting receiver provided by the invention;
Fig. 6 is the side view of any one heat collection unit in Fig. 5;
Fig. 7 is the structural representation of internal flame hot type heat dump provided by the invention;
Fig. 8 is the structural representation of salt discharge mechanism provided by the invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail:
The invention provides a kind of solar energy tower type thermal generation column type receiver, comprising: tower body bracing frame 1, heat collecting receiver 2 and top seal lid 3; Wherein, tower body bracing frame support set hot receiver; Top seal lid is fixedly installed on the top of heat collecting receiver; The present invention has carried out the improvement of four kinds of technology altogether to this solar energy tower type thermal generation column type receiver, thus improves the service behaviour of solar energy tower type thermal generation column type receiver comprehensively.Below these the four kinds technology improved are introduced respectively in detail:
(1) attemperator
As shown in Figure 1, for being with the structural representation of the heat collecting receiver of heat-insulation layer; Fig. 2 is the structural representation after Fig. 1 removes heat-insulation layer; Attemperator comprises: heat-insulation layer 4, heat-insulation layer support stand 5 and heat-insulation layer lifter 6;
Wherein, heat-insulation layer is set in the periphery of heat collecting receiver by heat-insulation layer support stand, and heat-insulation layer inside is provided with the mechanism supporting with heat-insulation layer lifter, and under external force, heat-insulation layer moves up and down along heat-insulation layer lifter;
When heat collecting receiver needs insulation, when heat-insulation layer is moved upwards up to top, reach structure shown in Fig. 4, heat-insulation layer covers heat collecting receiver completely, and, the periphery of heat-insulation layer and top seal lid tight seal;
When heat collecting receiver needs to absorb solar radiation energy, heat-insulation layer is moved down into bottom, reach structure shown in Fig. 3, heat-insulation layer is positioned at the below of heat collecting receiver completely, and heat collecting receiver is all arranged in external environment.
The course of work of attemperator is:
S1, at the sheathed heat-insulation layer in the periphery of heat collecting receiver;
S2, when described heat collecting receiver needs insulation, is moved upwards up to top by described heat-insulation layer along heat-insulation layer lifter, described heat-insulation layer covers described heat collecting receiver completely, further, the periphery of heat-insulation layer and top seal lid tight seal, thus the effect that realization is effectively incubated heat collecting receiver.
When heat collecting receiver needs to absorb solar radiation energy, heat-insulation layer is moved down into bottom along heat-insulation layer lifter, and heat-insulation layer is positioned at the below of heat collecting receiver completely, and heat collecting receiver is all arranged in external environment.
Attemperator provided by the invention, for can closed type structure, under can being effectively reduced in low temperature and strong wind weather, the heat loss of heat collecting receiver, also effectively can avoid the frozen risk of heat collecting receiver.In addition, also have structure simple, control easy advantage, the protection to heat collecting receiver can be realized fast.
(2) townhouse cast heat collecting receiver
Townhouse cast heat collecting receiver comprises n group thermal-arrest receiving unit, and each group thermal-arrest receiving unit surrounds circle; N >=1, n is natural number; As shown in Figure 5, for n is the structural representation of 3.
Each group thermal-arrest receiving unit comprises: local terminal heat collection unit, opposite end heat collection unit and top jumper pipe; Described local terminal heat collection unit is communicated with by described top jumper pipe with described opposite end heat collection unit; Further, described local terminal heat collection unit and described opposite end heat collection unit are symmetricly set on the both sides of described circle, described local terminal heat collection unit towards solar radiation energy-flux density higher than described opposite end heat collection unit towards solar radiation energy-flux density.
In Figure 5, have three groups of thermal-arrest receiving units, namely local terminal heat collection unit A1, opposite end heat collection unit A2 and top jumper pipe A3 form one group of thermal-arrest receiving unit; Local terminal heat collection unit B1, opposite end heat collection unit B2 and top jumper pipe B3 form one group of thermal-arrest receiving unit; Local terminal heat collection unit C1, opposite end heat collection unit C2 and top jumper pipe C3 form one group of thermal-arrest receiving unit.
According to the layout type in Chinese geography latitude situation and conventional solar energy tower type power station, the solar radiation be subject to towards A1, B1, C1 group heat collector surface in the north relative to south A2, B2, C2 group heat collector surface suffered by solar radiation.In Figure 5, local terminal heat collection unit A1 is oriented positive north orientation, and heat collection unit A2 center, opposite end is oriented positive south orientation.Similar, local terminal heat collection unit B1 and local terminal heat collection unit C1 is the heat collector surface of high temperature, and opposite end heat collection unit B2 and opposite end heat collection unit C2 is the heat collector surface of relative low temperature.
Wherein, local terminal heat collection unit is identical with the structure of described opposite end heat collection unit;
As shown in Figure 6, the structure chart of local terminal heat collection unit is only shown, local terminal heat collection unit comprises: the first bottom townhouse pipe 10, first group thermal-collecting tube 11 and the first top townhouse pipe 12; Described first group of thermal-collecting tube is made up of many thermal-collecting tube a; Each thermal-collecting tube a be arranged in parallel, and the bottom of each thermal-collecting tube a is communicated with described first bottom townhouse pipe, and the top of each thermal-collecting tube a is communicated with described first top townhouse pipe;
Described opposite end heat collection unit comprises: the second bottom townhouse pipe, second group of thermal-collecting tube and the second top townhouse pipe; Described second group of thermal-collecting tube is made up of many thermal-collecting tube b; Each thermal-collecting tube b be arranged in parallel, and the bottom of each thermal-collecting tube b is communicated with described second bottom townhouse pipe, and the top of each thermal-collecting tube b is communicated with described second top townhouse pipe;
One end of described top jumper pipe 13 is communicated with described first top townhouse pipe, and the other end of described top jumper pipe is communicated with described second top townhouse pipe.
The course of work of townhouse cast heat collecting receiver is:
When described heat collecting receiver work, first heat-conducting medium flows into the first bottom townhouse pipe of local terminal heat collection unit, first group of thermal-collecting tube is upwards flowed into again from the first bottom townhouse pipe, the first top townhouse pipe is flowed into again from first group of thermal-collecting tube, top jumper pipe is flowed into again from the first top townhouse pipe, the second top townhouse pipe of opposite end heat collection unit is flowed out to again from top jumper pipe, second group of thermal-collecting tube is flow into downwards again from the second top townhouse pipe, flow out to the second bottom townhouse pipe from second group of thermal-collecting tube again, finally discharge from the second bottom townhouse pipe.
In Figure 5, first heat-conducting medium fuse salt enters heat collector surface by bottom townhouse pipe A1, B1, C1, flows through the thermal-collecting tube on heat collector surface, then by top jumper pipe, heat-conducting medium is sent into the heat collector surface of A2, B2, C2.
By above-mentioned multistage string hybrid connected structure, all thermal-collecting tubes are relative radiation balance all, that is: thermal-arrest district is had on the positive north that intensity of solar radiation is high, positive the south low in the intensity of solar radiation of correspondence also has thermal-arrest district, the temperature that can realize all thermal-collecting tubes is thus relatively consistent, has the advantage that accuracy of temperature control is high; Avoid the thermal-collecting tube unbalanced stress because inequality of being heated causes simultaneously, and the appearance of the inner heat-conducting medium solidification phenomenon of the thermal-collecting tube that some is subject to solar radiation lower when Low emissivity.
In addition, heat-conducting medium first by the larger north orientation face of solar radiation energy-flux density, i.e. A1, B1, C1 heat collector surface, and then through the less south orientation face of solar radiation energy-flux density, i.e. A2, B2, C2 heat collector surface.By this kind of design, can effectively avoid when microthermal climate and low DNI, low temperature molten salt enters the risk that solidifying appears in heat collector.
(3) internal flame hot type heat dump
As shown in Figure 7, be also provided with internal flame hot type heat dump in the inside of heat collecting receiver, internal flame hot type heat dump comprises: gas spray head 31, gas flow control valve 32, hygrosensor 33 and controller 34; Described gas spray head is arranged on the inside of described heat collecting receiver, and described gas flow control valve installed by the gas pipeline of described gas spray head; Described hygrosensor is also arranged on the inside of described heat collecting receiver, and the output of described hygrosensor is connected with the input of described controller, and the output of described controller is connected with described gas flow control valve.
The course of work of internal flame hot type heat dump is:
Combustion gas supplies combustion gas by gas pipeline to gas spray head, and gas spray head burning produces heat and heats the inner space of heat collecting receiver; Wherein, the temperature value of hygrosensor Real-time Collection heat collecting receiver inner space, and the temperature value collected is transferred to controller, controller judges that whether this temperature value is higher than setting value, if higher than, then regulation gas flow control valve, reduces the gas quantity to gas spray head supply, and then reduce the heat of gas spray head generation, make heat collecting receiver internal temperature be tending towards setting value gradually; If lower than setting value, then regulation gas flow control valve, increases the gas quantity to gas spray head supply, and then improves the heat of gas spray head generation, makes heat collecting receiver internal temperature be tending towards setting value gradually.
By arranging internal flame hot type heat dump in the inside of heat collecting receiver, under low temperature and strong wind weather, starting heat dump, the frozen risk of the inner heat-conducting medium of heat collecting receiver can be prevented.By gas flow control valve adjustment of combustion gas flow, realize the controlling and adjustment to heat collecting receiver internal temperature.And ensure that the startup of combustion gas and end have more rationally and controllability, avoid the too high damage caused of heat sink temperature simultaneously by controller.Have structure simple, control easy advantage, the thermal shock that heat dump frequent starting produces can also be reduced, accelerate the toggle speed of total system.
(4) salt discharge mechanism
As shown in Figure 8, salt discharge mechanism comprises: air accumulator 41 and surge tank 42; Described air accumulator is communicated with described surge tank by the first gas pipeline 43; Controlled valve 44 installed by described first gas pipeline; Described surge tank is communicated with described heat collecting receiver by the second gas pipeline 45; Electric control valve 46 installed by described second gas pipeline; Further, described surge tank is also provided with pressure gauge 47, and by pressurized tank, in guarantee surge tank, pressure is stable.Wherein, the gas stored in air accumulator includes but not limited to nitrogen, inert gas etc.
The course of work of salt discharge mechanism is:
Under normal circumstances, open controlled valve, air accumulator carries gas to surge tank, by pressure gauge monitoring surge tank internal pressure value;
When needs salt discharge, open electric control valve, the gas stored in surge tank enters heat collecting receiver, and heat collecting receiver discharged by the melting salt promoting heat collecting receiver inside.
Salt discharge mechanism provided by the invention has the following advantages:
(1) when the melting salt in heat collecting receiver cannot be discharged, by salt discharge mechanism, salt discharge in time fast can be realized, the melting salt freezing accident avoiding salt discharge to cause not in time.
(2) purged by nitrogen, the quick, totally emptying of melting salt can be realized, avoid the blocking that the salt discharge of part pipeline does not freely cause.
(3) entirety has the advantage that structure is simple, reliability is high.
In sum, solar energy tower type thermal generation column type receiver provided by the invention, has the following advantages:
(1) adopting can the attemperator of closed type, and under can being effectively reduced in low temperature and strong wind weather, the heat loss of heat collecting receiver, also effectively can avoid the frozen risk of heat collecting receiver.In addition, also have structure simple, control easy advantage, the protection to heat collecting receiver can be realized fast.
(2) heat collecting receiver adopts multistage string hybrid connected structure, ensures all thermal-collecting tubes all relative radiation balances; Avoid the thermal-collecting tube unbalanced stress because inequality of being heated causes simultaneously, and the appearance of the inner heat-conducting medium solidification phenomenon of the thermal-collecting tube that some is subject to solar radiation lower when Low emissivity.
(3) by arranging internal flame hot type heat dump in the inside of heat collecting receiver, the frozen risk of the inner heat-conducting medium of heat collecting receiver can be prevented.
(4) when the melting salt in heat collecting receiver cannot be discharged, by salt discharge mechanism, salt discharge in time fast can be realized, the melting salt freezing accident avoiding salt discharge to cause not in time.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should look protection scope of the present invention.
Claims (10)
1. a solar energy tower type thermal generation column type receiver, is characterized in that, comprising: tower body bracing frame, heat collecting receiver, top seal lid, heat-insulation layer, heat-insulation layer support stand and heat-insulation layer lifter;
Wherein, described tower body bracing frame supports described heat collecting receiver; Described top seal lid is fixedly installed on the top of described heat collecting receiver; Described heat-insulation layer is set in the periphery of described heat collecting receiver by described heat-insulation layer support stand, and described heat-insulation layer inside is provided with the mechanism supporting with described heat-insulation layer lifter, and under external force, described heat-insulation layer moves up and down along described heat-insulation layer lifter;
When described heat collecting receiver needs insulation, when described heat-insulation layer is moved upwards up to top, described heat-insulation layer covers described heat collecting receiver completely, and, the periphery of described heat-insulation layer and described top seal lid tight seal;
When described heat collecting receiver needs to absorb solar radiation energy, described heat-insulation layer is moved down into bottom, described heat-insulation layer is positioned at the below of described heat collecting receiver completely, and described heat collecting receiver is all arranged in external environment.
2. solar energy tower type thermal generation column type receiver according to claim 1, is characterized in that, described heat collecting receiver is townhouse cast heat collecting receiver, comprises n group thermal-arrest receiving unit, and each group thermal-arrest receiving unit surrounds circle; N >=1, n is natural number;
Each group thermal-arrest receiving unit comprises: local terminal heat collection unit, opposite end heat collection unit and top jumper pipe; Described local terminal heat collection unit is communicated with by described top jumper pipe with described opposite end heat collection unit; Further, described local terminal heat collection unit and described opposite end heat collection unit are symmetricly set on the both sides of described circle, described local terminal heat collection unit towards solar radiation energy-flux density higher than described opposite end heat collection unit towards solar radiation energy-flux density.
3. solar energy tower type thermal generation column type receiver according to claim 2, is characterized in that, described local terminal heat collection unit is identical with the structure of described opposite end heat collection unit;
Described local terminal heat collection unit comprises: the first bottom townhouse pipe, first group of thermal-collecting tube and the first top townhouse pipe; Described first group of thermal-collecting tube is made up of many thermal-collecting tube a; Each thermal-collecting tube a be arranged in parallel, and the bottom of each thermal-collecting tube a is communicated with described first bottom townhouse pipe, and the top of each thermal-collecting tube a is communicated with described first top townhouse pipe;
Described opposite end heat collection unit comprises: the second bottom townhouse pipe, second group of thermal-collecting tube and the second top townhouse pipe; Described second group of thermal-collecting tube is made up of many thermal-collecting tube b; Each thermal-collecting tube b be arranged in parallel, and the bottom of each thermal-collecting tube b is communicated with described second bottom townhouse pipe, and the top of each thermal-collecting tube b is communicated with described second top townhouse pipe;
One end of described top jumper pipe is communicated with described first top townhouse pipe, and the other end of described top jumper pipe is communicated with described second top townhouse pipe.
4. solar energy tower type thermal generation column type receiver according to claim 2, is characterized in that, n=3.
5. solar energy tower type thermal generation column type receiver according to claim 1, is characterized in that, is also provided with internal flame hot type heat dump in the inside of described heat collecting receiver.
6. solar energy tower type thermal generation column type receiver according to claim 5, is characterized in that, described internal flame hot type heat dump comprises: gas spray head, gas flow control valve, hygrosensor and controller; Described gas spray head is arranged on the inside of described heat collecting receiver, and described gas flow control valve installed by the gas pipeline of described gas spray head; Described hygrosensor is also arranged on the inside of described heat collecting receiver, and the output of described hygrosensor is connected with the input of described controller, and the output of described controller is connected with described gas flow control valve.
7. solar energy tower type thermal generation column type receiver according to claim 1, is characterized in that, also comprise salt discharge mechanism;
Described salt discharge mechanism comprises: air accumulator and surge tank; Described air accumulator is communicated with described surge tank by the first gas pipeline; Controlled valve installed by described first gas pipeline; Described surge tank is communicated with described heat collecting receiver by the second gas pipeline; Electric control valve installed by described second gas pipeline; Further, described surge tank is also provided with pressure gauge.
8. a method for applied solar energy tower type thermal generation column type receiver, is characterized in that, comprise the following steps:
S1, at the sheathed heat-insulation layer in the periphery of heat collecting receiver;
S2, when described heat collecting receiver needs insulation, described heat-insulation layer is moved upwards up to top along heat-insulation layer lifter, and described heat-insulation layer covers described heat collecting receiver completely, and, the periphery of described heat-insulation layer and top seal lid tight seal;
When described heat collecting receiver needs to absorb solar radiation energy, described heat-insulation layer is moved down into bottom along heat-insulation layer lifter, and described heat-insulation layer is positioned at the below of described heat collecting receiver completely, and described heat collecting receiver is all arranged in external environment.
9. method according to claim 8, is characterized in that, also comprises:
When described heat collecting receiver work, first heat-conducting medium flows into the first bottom townhouse pipe of local terminal heat collection unit, first group of thermal-collecting tube is upwards flowed into again from the first bottom townhouse pipe, the first top townhouse pipe is flowed into again from first group of thermal-collecting tube, top jumper pipe is flowed into again from the first top townhouse pipe, the second top townhouse pipe of opposite end heat collection unit is flowed out to again from top jumper pipe, second group of thermal-collecting tube is flow into downwards again from the second top townhouse pipe, flow out to the second bottom townhouse pipe from second group of thermal-collecting tube again, finally discharge from the second bottom townhouse pipe.
10. method according to claim 8, is characterized in that, also comprises:
Also be provided with internal flame hot type heat dump in the inside of described heat collecting receiver, the course of work of described internal flame hot type heat dump is:
Combustion gas supplies combustion gas by gas pipeline to gas spray head, and gas spray head burning produces heat and heats the inner space of heat collecting receiver; Wherein, the temperature value of hygrosensor Real-time Collection heat collecting receiver inner space, and the temperature value collected is transferred to controller, controller judges that whether this temperature value is higher than setting value, if higher than, then regulation gas flow control valve, reduces the gas quantity to gas spray head supply, and then reduce the heat of gas spray head generation, make heat collecting receiver internal temperature be tending towards setting value gradually; If lower than setting value, then regulation gas flow control valve, increases the gas quantity to gas spray head supply, and then improves the heat of gas spray head generation, makes heat collecting receiver internal temperature be tending towards setting value gradually;
Also comprise salt discharge mechanism, the course of work of described salt discharge mechanism is:
Under normal circumstances, open controlled valve, air accumulator carries gas to surge tank, by pressure gauge monitoring surge tank internal pressure value;
When needs salt discharge, open electric control valve, the gas stored in surge tank enters heat collecting receiver, and heat collecting receiver discharged by the melting salt promoting heat collecting receiver inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310397276.3A CN104422148A (en) | 2013-09-04 | 2013-09-04 | Column-type acceptor for solar tower-type thermal electricity generation and application method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310397276.3A CN104422148A (en) | 2013-09-04 | 2013-09-04 | Column-type acceptor for solar tower-type thermal electricity generation and application method thereof |
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| CN104422148A true CN104422148A (en) | 2015-03-18 |
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| CN201310397276.3A Pending CN104422148A (en) | 2013-09-04 | 2013-09-04 | Column-type acceptor for solar tower-type thermal electricity generation and application method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114357711A (en) * | 2021-12-03 | 2022-04-15 | 中广核太阳能开发有限公司 | Heat collection tube bending processing method and device based on truncation ratio calculation |
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