CN103968567A - Solar heat collecting system and control method thereof - Google Patents
Solar heat collecting system and control method thereof Download PDFInfo
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- CN103968567A CN103968567A CN201310039963.8A CN201310039963A CN103968567A CN 103968567 A CN103968567 A CN 103968567A CN 201310039963 A CN201310039963 A CN 201310039963A CN 103968567 A CN103968567 A CN 103968567A
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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
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- 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
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Abstract
The invention relates to the field of solar thermal power generation and particularly relates to a solar heat collecting system and a control method thereof. The solar heat collecting system comprises at least one solar heat collecting unit, wherein the solar heat collecting unit comprises at least one heat collecting module, a first working medium pipeline system and a second working medium branch pipeline; at least one hollow container is arranged inside the second working medium branch pipeline; a first working medium flows through the hollow container and performs heat exchange with a second working medium; a first working medium header is communicated with a first working medium second main pipeline and a first working medium first main pipeline. According to the solar heat collecting system disclosed by the invention, due to the addition of the second working medium branch pipeline and the hollow container, the consumption of the first working medium is reduced, the working distance is shortened, the cost is reduced and preheating and insulating are facilitated; the flow of the second working medium can be adjusted, the defect that the energy flux density of the second working medium is small is overcome; in addition, safety and stability are realized when the solar heat collecting system works in a normal pressure or low pressure state.
Description
Technical field
The present invention relates to solar energy thermal-power-generating field, relate in particular to a kind of solar thermal collection system and control method thereof.
Background technology
In the non-regeneration energies such as coal, oil, natural gas day by day exhausted today, people need a kind of alternative energy source badly, and solar energy with its cleanliness without any pollution, many advantages is more and more the subject to people's such as raw material are cheap, utilization rate is high concern.Solar light-heat power-generation system is roughly divided three classes: groove type line-focusing system, tower system and dish formula system, wherein to be the heliostat that utilizes one group of independently tracked sun focus on sunlight on a heat collector that is fixed on top of tower tower system, in the cavity of heat collector, produce high temperature, generating working medium by cavity (as air or other gas) heating is promoted to Brayton circulation, heat energy is converted into electric energy the most at last, and its energy conversion efficiency can reach 35%-40%.
In prior art, directly absorb solar energy and must adopt the high working medium of energy-flux density, absorb fast heat, as tin, fuse salt, but these two kinds of working medium costs are higher, and be solid at normal temperatures, if a whole set of collecting system all adopts this type of working medium, the one, can greatly increase cost, the 2nd, before starting, work preheats difficulty, reduced system effectiveness, the rear insulation of having worked is more difficult and cost is high; And for example conduction oil, its boiling point is lower, preheats simply, but can not serve as the working medium in fairly large power station; And for example air, working medium cost is very low, but need under high pressure conditions, work, and has increased the design difficulty of heat collector pipe-line system and supporting pipe-line system, has increased cost.Due to collector structure and big or small restriction, under normal pressure or low-pressure state, the cost of collecting system is generally higher, and the operating distance of working medium is larger, is unfavorable for preheating and insulation.
Summary of the invention
The object of the invention is to propose that a kind of cost is lower, safety and stability and be convenient to preheating and insulation solar heat collecting system and control method thereof.
For reaching this object, the present invention by the following technical solutions:
A kind of solar thermal collection system, comprise at least one solar energy heating unit, solar energy heating unit comprises: at least one heat collecting module, the first working medium pipe-line system, heat collecting module is provided with the first working medium import and the first sender property outlet, the first working medium pipe-line system comprises: first working medium the first main pipeline, first working medium the second main pipeline, the first working medium the 5th main pipeline and the first working medium entrance branch road, the first sender property outlet branch pipe(tube), the first working medium import of heat collecting module is communicated with first working medium the second main pipeline by the first working medium entrance branch road, the first sender property outlet of heat collecting module is communicated with the first working medium the 5th main pipeline by the first sender property outlet branch pipe(tube), also comprise the second working medium branch pipe(tube), the second working medium branch pipe(tube) inside is provided with at least one hollow container, hollow container is provided with import and outlet, the import of hollow container is communicated with the first working medium the 5th main pipeline, the outlet of hollow container is communicated with first working medium the first main pipeline, in the time of the first working medium of solar energy heating unit and the second working medium generation heat exchange of this solar energy heating unit, the import of hollow container is communicated with the first working medium the 5th main pipeline, the outlet of hollow container is communicated with first working medium the first main pipeline.
Wherein, solar energy heating unit also comprises: the first working medium header, the first changeover valve, the second changeover valve, the 3rd changeover valve, the 4th changeover valve, the first working medium pipe-line system also comprises: the first working medium the 3rd main pipeline, the first working medium the 4th main pipeline, in the time of the first working medium of this solar energy heating unit and the first working medium generation heat exchange of another solar energy heating unit, the second changeover valve is communicated with the import of hollow container with the first working medium the 3rd main pipeline, the first changeover valve is communicated with the outlet of hollow container with the first working medium the 3rd main pipeline, the first working medium the 3rd main pipeline is communicated with the first working medium the 4th main pipeline, the first working medium the 4th main pipeline passes and/or is wound around the first working medium header through another solar energy heating unit, complete the heat exchange of two solar energy heating unit, the first working medium header and first working medium the second main pipeline, first working medium the first main pipeline is communicated with, on described first working medium the first main pipeline, be provided with the 4th changeover valve, on described first working medium the second main pipeline, be provided with the 3rd changeover valve, the 3rd changeover valve and the 4th changeover valve are communicated with by a segment pipe.
Wherein, also comprise the 5th changeover valve being connected with another or other multiple solar energy heatings unit for solar energy heating unit, the 5th changeover valve is positioned at the junction of the first working medium the 3rd main pipeline and the first working medium the 4th main pipeline.
Wherein, also comprise the second working medium main pipeline, be provided with the 6th changeover valve on the second working medium main pipeline, the second working medium main pipeline is communicated with the second working medium branch pipe(tube) of one or more solar energy heatings unit by the 6th changeover valve.
Wherein, the exit of hollow container is provided with temperature sensor.
Wherein, on the second working medium branch pipe(tube), be provided with valve, this valve is in hollow container upstream, for controlling the flow of the second working medium that flows to hollow container.
Wherein, in the first working medium header, be provided with electric tracer heating system, in the first working medium pipe-line system, be provided with electric tracer heating system, on hollow container, be provided with electric tracer heating system.
Wherein, at least one side of the first working medium header is provided with shadow shield, and the first working medium header is provided with light-absorbing coating towards the one side of heliostat.
Wherein, on first working medium the second main pipeline, be provided with pump, pump the first working medium entrance branch road and the 3rd changeover valve between; The junction of the first working medium import of the first working medium entrance branch road and heat collecting module is provided with flow control valve; The junction of the first sender property outlet of the first sender property outlet branch pipe(tube) and heat collecting module is provided with outlet temperature sensor; On heat collecting module, be provided with light intensity sensor.
Wherein, also comprise protective gas baffle-box; the outlet of protective gas baffle-box is communicated with first working medium the second main pipeline by outlet pipe; this connectivity part is positioned at the upstream of pump, the downstream of the 3rd changeover valve; the import of protective gas baffle-box is communicated with the first working medium header by admission line; the top of protective gas baffle-box is also provided with tubule, and protective gas is communicated with atmosphere.
Wherein, also comprise protective gas storage tank, protective gas storage tank is communicated with by gas pipeline with protective gas baffle-box 4, is provided with valve on gas pipeline.
Wherein, also comprise the first working medium reflux line and electrically-controlled valve, one end of the first working medium reflux line is communicated with heat collecting module by electrically-controlled valve, and the other end of the first working medium reflux line is communicated with the first working medium header.
Wherein, the inside of the second working medium branch pipe(tube) is provided with the second working medium flow regulating device.
Wherein, also comprise thermal-arrest tower king-tower, thermal-arrest tower transverse arm, thermal-arrest unit is connected by the first guide rail with thermal-arrest tower king-tower, on thermal-arrest tower transverse arm, be provided with hoisting apparatus, hoisting apparatus is used for making thermal-arrest unit to move up and down along the first guide rail, in the time that thermal-arrest unit is moved upward to the position of a setting, the second working medium branch pipe(tube) automatic butt of the second working medium branch pipe(tube) of thermal-arrest unit and thermal-arrest tower king-tower, docking location is provided with docking facilities, after docking successfully, control detent mechanism thermal-arrest unit is fixed on thermal-arrest tower king-tower.
Wherein, docking facilities is infundibulate, for increasing the error allowed band of docking facilities.
Wherein, on docking facilities, be provided with sealing device.
Wherein, on docking facilities, be provided with automatic butt module, make docking facilities automatic butt.
Wherein, on docking facilities, be provided with soft connection device.
Wherein, thermal-arrest unit is rotated in the free degree of setting by Electric Machine Control.
Wherein, heat collecting module is provided with image sensor array towards the direction of heliostat field, moves the error of calibration heliostat by the second guide rail.
A control method for solar thermal collection system, comprising:
A, preheat the stage:
A1, open the shadow shield in the first working medium header, the first working medium in the direct heating solar thermal-arrest of sunshine unit in the first working medium header;
The first working medium in a2, sunshine heating heat collecting module, use the first working medium in the solar energy heating unit of low-melting the first working medium to reach after preset temperature, the first working medium the 5th main pipeline by this solar energy heating unit and the first working medium the 3rd main pipeline and the 5th changeover valve flow to the first working medium the 4th main pipeline, the first working medium header that the first working medium the 4th main pipeline uses the solar energy heating unit of the first working medium that fusing point is high through another, utilizes low-melting the first working medium to preheat the first working medium that fusing point is high;
A3, the second working medium are after other thermal source heating, flow to the second working medium branch pipe(tube) by the second working medium main pipeline, flow to the hollow container of the solar energy heating unit that uses low-melting the first working medium, low-melting the first working medium in heating hollow container, then utilizes low-melting the first working medium to add the first working medium that heat fusion joint is high;
B, working stage:
The work working medium of b1, working stage is the first working medium that fusing point is high, this first working medium flows into heat collecting module by first working medium the second main pipeline and the first working medium entrance branch road from pump, and the first working medium flows into the first sender property outlet branch pipe(tube) and the first working medium the 5th main pipeline by heat collecting module the first sender property outlet;
B2, heat the second working medium: the first working medium flows into hollow container by the second changeover valve, heat the second working medium in the second working medium branch pipe(tube), then first changeover valve of flowing through, first working medium the first main pipeline, the 4th changeover valve, the 3rd changeover valve, get back to pump, now the 3rd changeover valve and the 4th changeover valve are communicated with, the first working medium does not flow back to the first working medium header, the temperature that the temperature sensor measurement arranging when the exit of hollow container obtains is during lower than design temperature, the second working medium flow regulating device is turned the aperture of the valve on the second working medium branch pipe(tube) automatically down, to reduce flow, when the temperature measuring is during higher than design temperature, the second working medium flow regulating device tunes up the aperture of the valve on the second working medium branch pipe(tube) automatically, to increase flow, the flow control valve that heat collecting module the first working medium import department arranges, the data that obtain according to the temperature sensor measurement of light intensity sensor and heat collecting module the first sender property outlet place setting regulate the flow of the first working medium automatically, make first Temperature of Working at each heat collecting module the first sender property outlet place identical,
B3, more than two solar energy heating unit same the first working medium of heating that superposes continuously: when the first working medium in this solar energy heating unit is with the first working medium in another solar energy heating unit or other multiple solar energy heatings unit when identical, this first working medium flows through the solar energy heating unit of this first working medium of above-mentioned use successively, this first working medium is carried out to continuously stack heating, after this first working medium heating again with the second working medium heat exchange;
B4, same the second working medium of the first working medium laser heating more than two in solar energy heating unit: control the 6th changeover valve, make the second working medium flow through successively the hollow container in multiple solar energy heatings unit, this second working medium of the first working medium laser heating in above-mentioned these solar energy heating unit.
Wherein, also comprise:
C, auxiliary protection stage:
When c1, work start, pump flows in the first working medium pipe-line system the first working medium in the first working medium header again, and protective gas is pushed back the first working medium header and gets back to protective gas baffle-box by admission line;
When c2, end-of-job, protective gas baffle-box flows into first working medium the second main pipeline by protective gas by outlet pipe, and the first working medium in the first working medium pipe-line system is pressed into the first working medium header, and insulation, to treat that used next time;
C3, in the time that protective gas in protective gas baffle-box is not enough, protective gas storage tank supplements protective gas in protective gas baffle-box.
Wherein, also comprise:
D, urgent heating period:
In the time of residual the first curing working medium of the first working medium pipe-line system, by electric tracer heating system first working medium that is heating and curing;
In the time of residual the first curing working medium of hollow container, by electric tracer heating system first working medium that is heating and curing, or first working medium of solidifying in the second working medium heating hollow container heating by other thermals source.
Beneficial effect of the present invention is: a kind of solar thermal collection system, comprise at least one solar energy heating unit, solar energy heating unit comprises: at least one heat collecting module, the first working medium pipe-line system, heat collecting module is provided with the first working medium import and the first sender property outlet, the first working medium pipe-line system comprises: first working medium the first main pipeline, first working medium the second main pipeline, the first working medium the 5th main pipeline and the first working medium entrance branch road, the first sender property outlet branch pipe(tube), the first working medium import of heat collecting module is communicated with first working medium the second main pipeline by the first working medium entrance branch road, the first sender property outlet of heat collecting module is communicated with the first working medium the 5th main pipeline by the first sender property outlet branch pipe(tube), also comprise the second working medium branch pipe(tube), the second working medium branch pipe(tube) inside is provided with at least one hollow container, hollow container is provided with import and outlet, the import of hollow container is communicated with the first working medium the 5th main pipeline, the outlet of hollow container is communicated with first working medium the first main pipeline, in the time of the first working medium of this solar energy heating unit and the second working medium generation heat exchange of this solar energy heating unit, the import of hollow container is communicated with the first working medium the 5th main pipeline, the outlet of hollow container is communicated with first working medium the first main pipeline, the present invention is by increasing by the second working medium branch pipe(tube) and hollow container, reduce the consumption of the first working medium, reduce the operating distance of the first working medium, reduce cost, and be convenient to preheating and insulation, and second working medium flow can regulate, avoid the little shortcoming of the second working medium energy-flux density, and work under normal pressure or low-pressure state, safety and stability.
Brief description of the drawings
Fig. 1 is solar energy heating cellular construction figure of the present invention
Fig. 2 is the distribution map of the multiple solar energy heatings of the present invention unit on thermal-arrest tower king-tower
Fig. 3 is that the multiple solar energy heatings of the present invention unit interconnects figure
Fig. 4 is the present invention's the second working medium flow regulating device schematic diagram
Fig. 5 is the present invention's the first working medium reflux line schematic diagram
Fig. 6 is thermal-arrest of the present invention unit and thermal-arrest tower connection diagram
Fig. 7 is image sensor array distribution map of the present invention
Fig. 8 be multiple solar energy heatings unit superpose continuously heating same the first working medium schematic diagram
Detailed description of the invention
Further illustrate technical scheme of the present invention below in conjunction with Fig. 1-Fig. 8 and by detailed description of the invention.
A kind of solar thermal collection system, comprise at least one solar energy heating unit, solar energy heating unit comprises: at least one heat collecting module 2, the first working medium pipe-line system 14, heat collecting module 2 is provided with the first working medium import 15 and the first sender property outlet 16, the first working medium pipe-line system 14 comprises: first working medium the first main pipeline 6a, first working medium the second main pipeline 6b, the first working medium the 5th main pipeline 6e and the first working medium entrance branch road 7c, the first sender property outlet branch pipe(tube) 7b, the first working medium import 15 of heat collecting module 2 is communicated with first working medium the second main pipeline 6b by the first working medium entrance branch road 7c, the first sender property outlet 16 of heat collecting module 2 is communicated with the first working medium the 5th main pipeline 6e by the first sender property outlet branch pipe(tube) 7b, also comprise the second working medium branch pipe(tube) 19, the second working medium branch pipe(tube) 19 inside are provided with at least one hollow container 18, hollow container 18 is provided with import and outlet, the import of hollow container 18 is communicated with the first working medium the 5th main pipeline 6e, the outlet of hollow container 18 is communicated with first working medium the first main pipeline 6a, in the time of the first working medium of solar energy heating unit and the second working medium generation heat exchange of this solar energy heating unit, the import of hollow container 18 is communicated with the first working medium the 5th main pipeline 6e, the outlet of hollow container 18 is communicated with first working medium the first main pipeline 6a.
In the present embodiment, solar energy heating unit also comprises: the first working medium header 3, the first changeover valve 17a, the second changeover valve 17b, the 3rd changeover valve 17c, the 4th changeover valve 17d, the first working medium pipe-line system 14 also comprises: the first working medium the 3rd main pipeline 6c, the first working medium the 4th main pipeline 6d, in the time of the first working medium of this solar energy heating unit and the first working medium generation heat exchange of another solar energy heating unit, the second changeover valve 17b is communicated with the import of hollow container 18 with the first working medium the 3rd main pipeline 6c, the first changeover valve 17a is communicated with the outlet of hollow container 18 with the first working medium the 3rd main pipeline 6c, the first working medium the 3rd main pipeline 6c is communicated with the first working medium the 4th main pipeline 6d, the first working medium the 4th main pipeline 6d passes and/or is wound around the first working medium header 3 through another solar energy heating unit, complete the heat exchange of two solar energy heating unit, the first working medium header 3 and first working medium the second main pipeline 6b, first working medium the first main pipeline 6a is communicated with, on first working medium the first main pipeline 6a, be provided with the 4th changeover valve 17d, on first working medium the second main pipeline 6b, be provided with the 3rd changeover valve 17c, the 3rd changeover valve 17c and the 4th changeover valve 17d are communicated with by a segment pipe.
As another kind of embodiment, solar energy heating unit comprises two or more heat collecting modules 2.
As another kind of embodiment, the second working medium branch pipe(tube) 19 inside are provided with two or more hollow containers 18.
In the present embodiment, also comprise that the 5th changeover valve 25, the five changeover valves 25 that are connected with another or other multiple solar energy heatings unit for solar energy heating unit are positioned at the junction of the first working medium the 3rd main pipeline 6c and the first working medium the 4th main pipeline 6d.22a, 22b, 22c, 22d are respectively a solar energy heating unit as shown in Figure 3, and the first working medium main pipeline between them is selected to be communicated with by changeover valve 25.
As shown in Figure 2, the distribution map of the multiple solar energy heatings of the present invention unit on thermal-arrest tower king-tower, thermal-arrest tower king-tower 24 comprises four transverse arms 23 altogether, and the tail end of each transverse arm 23 is provided with a solar energy heating unit, is also the 22a shown in Fig. 3,22b, 22c, 22d.
In the present embodiment, solar thermal collection system also comprises the second working medium main pipeline, on the second working medium main pipeline, be provided with the 6th changeover valve 26, the second working medium main pipeline is communicated with the second working medium branch pipe(tube) 19 of one or more solar energy heatings unit by the 6th changeover valve 26, in the time that multiple solar energy heatings unit links together, just need a second working medium main pipeline that these the second working medium branch pipe(tube)s 19 are communicated with to get up, and provide the second working medium to all the second working medium branch pipe(tube)s 19.
In the present embodiment, changeover valve 26 is communicated with the second working medium branch pipe(tube) 19 of four solar energy heating unit.
The exit of hollow container 18 is provided with temperature sensor, this temperature sensor is connected with the flow regulator in the second working medium branch pipe(tube), when this temperature sensor measurement to temperature while changing, can regulate by flow regulator the uninterrupted of the second working medium.
On the second working medium branch pipe(tube) 19, be provided with valve, this valve is in hollow container 18 upstreams, for controlling the flow of the second working medium that flows to hollow container 18.
In the present embodiment, in the first working medium header 3, be provided with in electric tracer heating system 20, the first working medium pipe-line systems 14 and be provided with electric tracer heating system 20, on hollow container 18, be provided with electric tracer heating system 20.
The one side of the first working medium header 3 is provided with shadow shield 8, the first working medium header 3 is provided with light-absorbing coating towards the one side of heliostat, shadow shield 8 can be incubated again in shading, while opening, allow solar light irradiation the first working medium header 3, heat the first working medium in the first working medium header 3, while closing, play insulation effect, light-absorbing coating is for improving the heat absorption efficiency of the first working medium header 3.
On first working medium the second main pipeline 6b, be provided with pump 13, pump 13 the first working medium entrance branch road 7c's and the 3rd changeover valve 17c between; The junction of the first working medium import 15 of the first working medium entrance branch road 7c and heat collecting module 2 is provided with flow control valve 10; The junction of the first sender property outlet 16 of the first sender property outlet branch pipe(tube) 7b and heat collecting module 2 is provided with outlet temperature sensor 11; On heat collecting module 2, be provided with light intensity sensor 12.
In the present embodiment, solar energy heating unit also comprises protective gas baffle-box 4, the outlet of protective gas baffle-box 4 is communicated with first working medium the second main pipeline 6b by outlet pipe 9a, this connectivity part is positioned at the upstream of pump 13, the downstream of the 3rd changeover valve 17c, the import of protective gas baffle-box 4 is communicated with the first working medium header 3 by admission line 9b, the top of protective gas baffle-box 4 is also provided with tubule, make protective gas be communicated with to maintain system pressure with atmosphere, in the present embodiment, protective gas is selected argon gas, because argon gas density ratio air is large, when system stability, argon gas can not flow out by tubule.
In the present embodiment, solar energy heating unit also comprises protective gas storage tank 21, and protective gas storage tank 21 is communicated with by gas pipeline with protective gas baffle-box 4, is provided with valve on gas pipeline.
In the present embodiment, the first working medium is liquid in the time of heat exchange, is preferably tin, and the second working medium is gas in the time of heat exchange, is preferably air.
As shown in Figure 5; solar energy heating unit also comprises the first working medium reflux line 36 and electrically-controlled valve 37; one end of the first working medium reflux line 36 is communicated with heat collecting module 3 by electrically-controlled valve 37; the other end of the first working medium reflux line 36 is communicated with the first working medium header 3; need to be by emptying intrasystem the first working medium in the time there are special circumstances; and protective gas baffle-box is can not use time; just electrically-controlled valve 37 can be opened, make the first working medium in heat collecting module 2 be back to the first working medium header 3 by the first working medium reflux line 36.
As shown in Figure 4, the second working medium branch pipe(tube) 19 inside are provided with the second working medium flow regulating device, in the present embodiment, this flow regulator comprises: coolant pump 27, motor 28, bearing cooling chamber 29, axle 30, bearing 31, cooling air pipe 32, blade 33, labyrinth seal 34 and bearing support block 35, motor 28 is with moving vane 33 to rotate, regulate the flow of the second working medium in the second working medium branch pipe(tube) 19 by controlling the rotating speed of motor, in bearing support block 35, be provided with cooling air pipe 32, be communicated with bearing cooling chamber 29, refrigerating gas is pressed into bearing cooling chamber 29 with cooling bearing 31 by coolant pump 27, refrigerating gas can be material of the same race with the second working medium, in the present embodiment, is all air, reveals portion gas can directly enter the second working medium branch pipe(tube) 19 at bearing cooling chamber 29 places, does not affect operating mode, week 30 and the second working medium branch pipe(tube) 19 junctions adopt labyrinth seal, and the sectional area that bearing support block 35 flows to direction along the second working medium is less, does not substantially affect the second Working fluid flow.
As shown in Figure 6, in the present embodiment, solar thermal collection system also comprises thermal-arrest tower king-tower 24, thermal-arrest tower transverse arm 23, thermal-arrest unit is connected by the first guide rail 39 with thermal-arrest tower king-tower 24, on thermal-arrest tower transverse arm 23, be provided with hoisting apparatus 41, hoisting apparatus 41 is for making thermal-arrest unit move up and down along the first guide rail 39, in the time that thermal-arrest unit is moved upward to the position of a setting, the second working medium branch pipe(tube) 19 of thermal-arrest unit and the second working medium branch pipe(tube) 19 automatic butt of thermal-arrest tower king-tower 24, docking location is provided with docking facilities 40, after docking successfully, controlling detent mechanism is fixed on thermal-arrest unit on thermal-arrest tower king-tower 24, when needs are safeguarded, while repairing thermal-arrest unit, thermal-arrest unit is moved downward to ground with hoisting apparatus 41.
In the present embodiment, docking facilities 40 is infundibulate, for increasing the error allowed band of docking facilities 40.
In the present embodiment, on docking facilities 40, be provided with sealing device, sealing device is made up of rubber or plastic or other material.
As another kind of embodiment, on docking facilities 40, be provided with automatic butt module, automatic butt module is made up of the material such as magnet or electromagnet, when the second working medium branch pipe(tube) 19 of thermal-arrest unit and the second working medium branch pipe(tube) 19 of thermal-arrest tower king-tower 24 near time, docking facilities 40 automatic butt.
As another kind of embodiment, on docking facilities 40, be provided with soft connection device, as bellows or joint pipeline, so that thermal-arrest finite element rotation, to tackle the solar incident angle of Various Seasonal, improves collecting efficiency.
In the present embodiment, thermal-arrest unit is rotated in the free degree of setting by Electric Machine Control.
As shown in Figure 7, in the present embodiment, heat collecting module 2 is provided with image sensor array 38 towards the direction of heliostat field, moves the error of calibration heliostat by the second guide rail 42.
A control method for solar thermal collection system, comprising:
A, preheat the stage:
A1, open the shadow shield 8 in the first working medium header 3, the first working medium in the direct heating solar thermal-arrest of sunshine unit in the first working medium header 3;
The first working medium in a2, sunshine heating heat collecting module 2, use the first working medium in the solar energy heating unit of low-melting the first working medium to reach after preset temperature, the first working medium the 5th main pipeline 6e by this solar energy heating unit and the first working medium the 3rd main pipeline 6c and the 5th changeover valve 25 flow to the first working medium the 4th main pipeline 6d, the first working medium header 3 that the first working medium the 4th main pipeline 6d uses the solar energy heating unit of the first working medium that fusing point is high through another, utilizes low-melting the first working medium to preheat the first working medium that fusing point is high;
In the present embodiment, the first working medium in solar energy heating unit 22a is conduction oil, and fusing point is lower, and the first working medium in solar energy heating unit 22b, 22c and 22d is tin, and fusing point is higher.
A3, the second working medium are after other thermal source heating, flow to the second working medium branch pipe(tube) 19 by the second working medium main pipeline, flow to the hollow container 18 of the solar energy heating unit that uses low-melting the first working medium, low-melting the first working medium in heating hollow container 18, then utilizes low-melting the first working medium to add the first working medium that heat fusion joint is high;
B, working stage:
The work working medium of b1, working stage is the first working medium that fusing point is high, this first working medium flows into heat collecting module 2 by first working medium the second main pipeline 6b and the first working medium entrance branch road 7c from pump 13, and the first working medium flows into the first sender property outlet branch pipe(tube) 7b and the first working medium the 5th main pipeline 6e by heat collecting module 2 first sender property outlets 16;
B2, heat the second working medium: the first working medium flows into hollow container 18 by the second changeover valve 17b, heat the second working medium in the second working medium branch pipe(tube) 19, then the first changeover valve 17a flows through, first working medium the first main pipeline 6a, the 4th changeover valve 17d, the 3rd changeover valve 17c, get back to pump 13, now the 3rd changeover valve 17c and the 4th changeover valve 17d are communicated with, the first working medium does not flow back to the first working medium header 3, the temperature that the temperature sensor measurement arranging when the exit of hollow container 18 obtains is during lower than design temperature, the second working medium flow regulating device is turned the aperture of the valve on the second working medium branch pipe(tube) 19 automatically down, to reduce flow, when the temperature measuring is during higher than design temperature, the second working medium flow regulating device tunes up the aperture of the valve on the second working medium branch pipe(tube) 19 automatically, to increase flow, the flow control valve 10 that heat collecting module 2 first working medium import 15 places arrange, the data that measure according to the temperature sensor 11 of light intensity sensor 12 and heat collecting module 2 first sender property outlet 16 places settings regulate the flow of the first working medium automatically, make first Temperature of Working at each heat collecting module 2 first sender property outlet 16 places identical,
As another kind of embodiment, while heating the second working medium: the first working medium flows into hollow container 18 by the second changeover valve 17b, heat the second working medium in the second working medium branch pipe(tube) 19, then the first changeover valve 17a, first working medium the first main pipeline 6a, the 4th changeover valve 17d, the first working medium header 3, the 3rd changeover valve 17c flow through, get back to pump 13, now the 3rd changeover valve 17c and the 4th changeover valve 17d are not communicated with, and the first working medium first working medium header 3 of flowing through circulates.
B3, more than two solar energy heating unit same the first working medium of heating that superposes continuously: when the first working medium in this solar energy heating unit is with the first working medium in another solar energy heating unit or other multiple solar energy heatings unit when identical, this first working medium flows through the solar energy heating unit of this first working medium of above-mentioned use successively, this first working medium is carried out to continuously stack heating, after this first working medium heating again with the second working medium heat exchange;
B4, same the second working medium of the first working medium laser heating more than two in solar energy heating unit: control the 6th changeover valve 26, make the second working medium flow through successively the hollow container 18 in multiple solar energy heatings unit, this second working medium of the first working medium laser heating in above-mentioned these solar energy heating unit.As shown in Figure 8, the first working medium in solar energy heating unit 22b, 22c, 22d is all tin, the heat collecting module 2 that the first working medium enters 22c from the first working medium header 3 through the 4th changeover valve 17d, the 6th changeover valve 17f heats for the first time, then the heat collecting module 2 that enters 22b through the first working medium the 3rd main pipeline 6c of 22c heats for the second time, then heat for the third time through the first working medium the 3rd main pipeline 6c of 22b, the heat collecting module 2 that the 5th changeover valve 17e enters 22d, the hollow container that enters 22d after heating carries out heat exchange.The present embodiment is used for solar irradiation poor time.
In the present embodiment, also comprise:
C, auxiliary protection stage:
When c1, work start, pump 13 flows in the first working medium pipe-line system 14 the first working medium in the first working medium header 3 again, and protective gas is pushed back the first working medium header 3 and gets back to protective gas baffle-box 4 by admission line 9b;
When c2, end-of-job, protective gas baffle-box 4 flows into first working medium the second main pipeline 6b by protective gas by outlet pipe 9a, and the first working medium in the first working medium pipe-line system 14 is pressed into the first working medium header 3, and insulation, to treat that used next time;
C3, in the time that protective gas in protective gas baffle-box 4 is not enough, protective gas storage tank 21 is to the interior supplementary protective gas of protective gas baffle-box 4.
In the present embodiment, also comprise:
D, urgent heating period:
In the time of residual the first curing working medium of the first working medium pipe-line system 14, by electric tracer heating system 20 first working medium that is heating and curing;
In the time of residual the first curing working medium of hollow container 18, by electric tracer heating system 20 first working medium that is heating and curing, or first working medium of solidifying in the second working medium heating hollow container 18 heating by other thermals source.
The foregoing is only the specific embodiment of the present invention, these are described is in order to explain principle of the present invention, and can not be interpreted as by any way limiting the scope of the invention.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other detailed description of the invention of the present invention, within these modes all will fall into protection scope of the present invention.
Claims (23)
1. a solar thermal collection system, comprise at least one solar energy heating unit, described solar energy heating unit comprises: at least one heat collecting module (2), the first working medium pipe-line system (14), described heat collecting module (2) is provided with the first working medium import (15) and the first sender property outlet (16), described the first working medium pipe-line system (14) comprising: first working medium the first main pipeline (6a), first working medium the second main pipeline (6b), the first working medium the 5th main pipeline (6e) and the first working medium entrance branch road (7c), the first sender property outlet branch pipe(tube) (7b), the first working medium import (15) of heat collecting module (2) is communicated with first working medium the second main pipeline (6b) by the first working medium entrance branch road (7c), first sender property outlet (16) of heat collecting module (2) is communicated with the first working medium the 5th main pipeline (6e) by the first sender property outlet branch pipe(tube) (7b), it is characterized in that, also comprise the second working medium branch pipe(tube) (19), described the second working medium branch pipe(tube) (19) inside is provided with at least one hollow container (18), hollow container (18) is provided with import and outlet, the import of hollow container (18) is communicated with the first working medium the 5th main pipeline (6e), the outlet of hollow container (18) is communicated with first working medium the first main pipeline (6a), in the time of the first working medium of described solar energy heating unit and the second working medium generation heat exchange of this solar energy heating unit, the import of hollow container (18) is communicated with the first working medium the 5th main pipeline (6e), the outlet of hollow container (18) is communicated with first working medium the first main pipeline (6a).
2. a kind of solar thermal collection system according to claim 1, it is characterized in that, described solar energy heating unit also comprises: the first working medium header (3), the first changeover valve (17a), the second changeover valve (17b), the 3rd changeover valve (17c), the 4th changeover valve (17d), described the first working medium pipe-line system (14) also comprises: the first working medium the 3rd main pipeline (6c), the first working medium the 4th main pipeline (6d), in the time of the first working medium of described solar energy heating unit and the first working medium generation heat exchange of another solar energy heating unit, the second changeover valve (17b) is communicated with the import of hollow container (18) with the first working medium the 3rd main pipeline (6c), the first changeover valve (17a) is communicated with the outlet of hollow container (18) with the first working medium the 3rd main pipeline (6c), the first working medium the 3rd main pipeline (6c) is communicated with the first working medium the 4th main pipeline (6d), the first working medium the 4th main pipeline (6d) passes and/or is wound around the first working medium header (3) through another solar energy heating unit, complete the heat exchange of two solar energy heating unit, the first working medium header (3) and first working medium the second main pipeline (6b), first working medium the first main pipeline (6a) is communicated with, on described first working medium the first main pipeline (6a), be provided with the 4th changeover valve (17d), on described first working medium the second main pipeline (6b), be provided with the 3rd changeover valve (17c), the 3rd changeover valve (17c) and the 4th changeover valve (17d) are communicated with by a segment pipe.
3. a kind of solar thermal collection system according to claim 2, it is characterized in that, also comprise the 5th changeover valve (25) being connected with another or other multiple solar energy heatings unit for described solar energy heating unit, the 5th changeover valve (25) is positioned at the junction of the first working medium the 3rd main pipeline (6c) and the first working medium the 4th main pipeline (6d).
4. a kind of solar thermal collection system according to claim 1, it is characterized in that, also comprise the second working medium main pipeline, on described the second working medium main pipeline, be provided with the 6th changeover valve (26), the second working medium main pipeline is communicated with the second working medium branch pipe(tube) (19) of one or more solar energy heatings unit by the 6th changeover valve (26).
5. a kind of solar thermal collection system according to claim 1, is characterized in that, the exit of described hollow container (18) is provided with temperature sensor.
6. a kind of solar thermal collection system according to claim 1, is characterized in that, on described the second working medium branch pipe(tube) (19), is provided with valve, and this valve is near hollow container (18), for controlling the flow of the second working medium that flows to hollow container (18).
7. a kind of solar thermal collection system according to claim 2, it is characterized in that, in described the first working medium header (3), be provided with electric tracer heating system (20), in the first working medium pipe-line system (14), be provided with electric tracer heating system (20), on hollow container (18), be provided with electric tracer heating system (20).
8. a kind of solar thermal collection system according to claim 2, is characterized in that, at least one side of described the first working medium header (3) is provided with shadow shield (8), and described the first working medium header (3) is provided with light-absorbing coating towards the one side of heliostat.
9. a kind of solar thermal collection system according to claim 2, is characterized in that, on described first working medium the second main pipeline (6b), is provided with pump (13), between that pump (13) is positioned at the first working medium entrance branch road (7c) and the 3rd changeover valve (17c); Described the first working medium entrance branch road (7c) is provided with flow control valve (10) with the junction of the first working medium import (15) of heat collecting module (2); Described the first sender property outlet branch pipe(tube) (7b) is provided with outlet temperature sensor (11) with the junction of first sender property outlet (16) of heat collecting module (2); On described heat collecting module (2), be provided with light intensity sensor (12).
10. a kind of solar thermal collection system according to claim 9; it is characterized in that; also comprise protective gas baffle-box (4); the outlet of protective gas baffle-box (4) is communicated with first working medium the second main pipeline (6b) by outlet pipe (9a); this connectivity part is positioned at the upstream of pump (13), the downstream of the 3rd changeover valve (17c); the import of protective gas baffle-box (4) is communicated with the first working medium header (3) by admission line (9b); the top of protective gas baffle-box (4) is also provided with tubule, and protective gas is communicated with atmosphere.
11. a kind of solar thermal collection systems according to claim 10; it is characterized in that; also comprise protective gas storage tank (21), described protective gas storage tank (21) is communicated with by gas pipeline with protective gas baffle-box (4), on described gas pipeline, is provided with valve.
12. a kind of solar thermal collection systems according to claim 2, it is characterized in that, also comprise the first working medium reflux line (36) and electrically-controlled valve (37), one end of the first working medium reflux line (36) is communicated with heat collecting module (2) by electrically-controlled valve (37), and the other end of the first working medium reflux line (36) is communicated with the first working medium header (3).
13. a kind of solar thermal collection systems according to claim 1, is characterized in that, described the second working medium branch pipe(tube) (19) inside is provided with the second working medium flow regulating device.
14. a kind of solar thermal collection systems according to claim 1, it is characterized in that, also comprise thermal-arrest tower king-tower (24), thermal-arrest tower transverse arm (23), thermal-arrest unit is connected by the first guide rail (39) with thermal-arrest tower king-tower (24), on thermal-arrest tower transverse arm (23), be provided with hoisting apparatus (41), hoisting apparatus (41) is for making thermal-arrest unit move up and down along the first guide rail (39), in the time that thermal-arrest unit is moved upward to the position of a setting, the second working medium branch pipe(tube) (19) automatic butt of the second working medium branch pipe(tube) (19) of thermal-arrest unit and thermal-arrest tower king-tower (24), docking location is provided with docking facilities (40), after docking successfully, controlling detent mechanism is fixed on thermal-arrest unit on thermal-arrest tower king-tower (24).
15. a kind of solar thermal collection systems according to claim 14, is characterized in that, described docking facilities (40) is infundibulate, for increasing the error allowed band of docking facilities (40).
16. a kind of solar thermal collection systems according to claim 14, is characterized in that, described docking facilities is provided with sealing device on (40).
17. a kind of solar thermal collection systems according to claim 14, is characterized in that, described docking facilities is provided with automatic butt module on (40), make docking facilities (40) automatic butt.
18. a kind of solar thermal collection systems according to claim 14, is characterized in that, described docking facilities is provided with soft connection device on (40).
19. a kind of solar thermal collection systems according to claim 18, is characterized in that, described thermal-arrest unit is rotated in the free degree of setting by Electric Machine Control.
20. a kind of solar thermal collection systems according to claim 1, is characterized in that, described heat collecting module (2) is provided with image sensor array (38) towards the direction of heliostat field, mobile by the second guide rail (42), the error of calibration heliostat.
21. 1 kinds of control methods for solar thermal collection system claimed in claim 1, is characterized in that, comprising:
A, preheat the stage:
A1, open the shadow shield (8) in the first working medium header (3), the first working medium in the direct heating solar thermal-arrest of sunshine unit in the first working medium header (3);
A2, the first working medium in sunshine heating heat collecting module (2), use the first working medium in the solar energy heating unit of low-melting the first working medium to reach after preset temperature, the first working medium the 5th main pipeline (6e) by this solar energy heating unit and the first working medium the 3rd main pipeline (6c) and the 5th changeover valve (25) flow to the first working medium the 4th main pipeline (6d), the first working medium the 4th main pipeline (6d) is through the first working medium header (3) of the solar energy heating unit of the first high working medium of another use fusing point, utilize low-melting the first working medium to preheat the first working medium that fusing point is high,
A3, the second working medium are after other thermal source heating, flow to the second working medium branch pipe(tube) (19) by the second working medium main pipeline, flow to the hollow container (18) of the solar energy heating unit that uses low-melting the first working medium, low-melting the first working medium in heating hollow container (18), then utilizes low-melting the first working medium to add the first working medium that heat fusion joint is high;
B, working stage:
The work working medium of b1, working stage is the first working medium that fusing point is high, this first working medium flows into heat collecting module (2) by first working medium the second main pipeline (6b) and the first working medium entrance branch road (7c) from pump (13), and the first working medium flows into the first sender property outlet branch pipe(tube) (7b) and the first working medium the 5th main pipeline (6e) by heat collecting module (2) first sender property outlets (16);
B2, heat the second working medium: the first working medium flows into hollow container (18) by the second changeover valve (17b), heat the second working medium in the second working medium branch pipe(tube) (19), then the first changeover valve (17a) of flowing through, first working medium the first main pipeline (6a), the 4th changeover valve (17d), the 3rd changeover valve (17c), get back to pump (13), now the 3rd changeover valve (17c) and the 4th changeover valve (17d) are communicated with, the first working medium does not flow back to the first working medium header (3), the temperature that the temperature sensor measurement arranging when the exit of hollow container (18) obtains is during lower than design temperature, the second working medium flow regulating device is turned the aperture of the valve on the second working medium branch pipe(tube) (19) automatically down, to reduce flow, when the temperature measuring is during higher than design temperature, the second working medium flow regulating device tunes up the aperture of the valve on the second working medium branch pipe(tube) (19) automatically, to increase flow, the flow control valve (10) arranging is located in heat collecting module (2) first working medium imports (15), the data that the temperature sensor (11) of locating to arrange according to light intensity sensor (12) and heat collecting module (2) first sender property outlets (16) measures regulate the flow of the first working medium automatically, the first Temperature of Working that each heat collecting module (2) first sender property outlets (16) are located is identical,
B3, more than two solar energy heating unit same the first working medium of heating that superposes continuously: when the first working medium in this solar energy heating unit is with the first working medium in another solar energy heating unit or other multiple solar energy heatings unit when identical, this first working medium flows through the solar energy heating unit of this first working medium of above-mentioned use successively, this first working medium is carried out to continuously stack heating, after this first working medium heating again with the second working medium heat exchange;
B4, same the second working medium of the first working medium laser heating more than two in solar energy heating unit: control the 6th changeover valve (26), make the second working medium flow through successively the hollow container (18) in multiple solar energy heatings unit, this second working medium of the first working medium laser heating in above-mentioned these solar energy heating unit.
The control method of 22. a kind of solar thermal collection systems according to claim 21, is characterized in that, also comprises:
C, auxiliary protection stage:
When c1, work start, pump (13) flows in the first working medium pipe-line system (14) the first working medium in the first working medium header (3) again, and protective gas is pushed back the first working medium header (3) and gets back to protective gas baffle-box (4) by admission line (9b);
When c2, end-of-job, protective gas baffle-box (4) flows into first working medium the second main pipeline (6b) by protective gas by outlet pipe (9a), the first working medium in the first working medium pipe-line system (14) is pressed into the first working medium header (3), and insulation, to treat that used next time;
C3, in the time that protective gas in protective gas baffle-box (4) is not enough, protective gas storage tank (21) supplements protective gas in protective gas baffle-box (4).
The control method of 23. a kind of solar thermal collection systems according to claim 21, is characterized in that, also comprises:
D, urgent heating period:
In the time of residual the first curing working medium of the first working medium pipe-line system (14), by electric tracer heating system (20) first working medium that is heating and curing;
In the time of residual the first curing working medium of hollow container (18), by electric tracer heating system (20) first working medium that is heating and curing, or first working medium of solidifying in the second working medium heating hollow container (18) heating by other thermals source.
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| CN107990573A (en) * | 2017-11-28 | 2018-05-04 | 李明守 | A kind of solar water heater by luminous power and moisturizing constant temperature intelligent control |
| CN108019963A (en) * | 2017-11-28 | 2018-05-11 | 李明守 | A kind of collecting plate illumination power adjustable without dirty intelligent solar water heater |
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| US6223743B1 (en) * | 1999-05-18 | 2001-05-01 | Melvin L. Prueitt | Solar power generation and energy storage system |
| CN102425865A (en) * | 2011-11-07 | 2012-04-25 | 深圳市联讯创新工场科技开发有限公司 | Solar heat collecting device |
| CN102437222A (en) * | 2011-12-06 | 2012-05-02 | 深圳市联讯创新工场科技开发有限公司 | Solar photo-thermal power generation system |
| CN202659429U (en) * | 2012-02-29 | 2013-01-09 | 深圳市阳能科技有限公司 | Solar energy and biomass energy series complementary power generation system |
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| US6223743B1 (en) * | 1999-05-18 | 2001-05-01 | Melvin L. Prueitt | Solar power generation and energy storage system |
| CN102425865A (en) * | 2011-11-07 | 2012-04-25 | 深圳市联讯创新工场科技开发有限公司 | Solar heat collecting device |
| CN102437222A (en) * | 2011-12-06 | 2012-05-02 | 深圳市联讯创新工场科技开发有限公司 | Solar photo-thermal power generation system |
| CN202659429U (en) * | 2012-02-29 | 2013-01-09 | 深圳市阳能科技有限公司 | Solar energy and biomass energy series complementary power generation system |
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| CN107990573A (en) * | 2017-11-28 | 2018-05-04 | 李明守 | A kind of solar water heater by luminous power and moisturizing constant temperature intelligent control |
| CN108019963A (en) * | 2017-11-28 | 2018-05-11 | 李明守 | A kind of collecting plate illumination power adjustable without dirty intelligent solar water heater |
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