CN102226449B - Working medium heating device of gas turbine solar power generation system - Google Patents

Abstract

The invention discloses a working medium heating device of a gas turbine solar power generation system. The device comprises a cold air passageway (5), a heat collecting cavity (7) and a hot air channel (26) which are communicated sequentially; the hot air channel (26) is formed by connecting an inner shell (28) at the front side and a heat compensation section (13) at the rear side; and the device also comprises a combustor (20) which heats primary heating air (27) in the heat compensation section (13) when the solar energy is insufficient, and the combustor (20) is arranged at the heat compensation section (13). By adopting the working medium heating device of the structure, the solar energy and other gaseous fuel materials can be combined to be utilized according to the direct radiation condition of solar energy, the primary heating air of the heat compensation section is subjected to fuel combustion compensation when the solar energy is insufficient; and because the combustor is simple in structure and lower in manufacturing cost, thus on the premise of low cost, the working medium heating device can be used for maintaining the stability and adjustability in outputting electricity externally by the power generation system when the solar energy is insufficient.

Description

The working medium heating device of gas turbine solar power system

Technical field

The present invention relates to the solar energy thermal-power-generating technical field, relate in particular to a kind of working medium heating device of gas turbine solar power system.

Background technology

Solar energy is tool development prospect, can solves one of ever-increasing new forms of energy of Future Social Development energy demand, and it has the reserves unlimitedness, the generality that distributes, utilize the characteristics such as spatter property and economy.That solar energy thermal-power-generating has is better with the suitability of network load, electricity conversion is high, easily produce the characteristics such as manufacture process environmental protection more, the electric power adjustability of scale effect, consumptive material be better, is the important development direction that following solar electrical energy generation utilizes.

Different according to the optically focused mode, solar energy thermal-power-generating mainly contains several electricity generation systems such as slot type, tower, dish formula, also pan of a steelyard formula system of disc type solar energy electricity generation system wherein, its principal character is to adopt plate-like parabolic concentrator heat collector, its optically focused ratio can arrive thousands of times up to hundreds of, thereby can produce very high temperature; With respect to alternate manner, dish formula electricity generation system have modular flexible deployment ability, higher optically focused than and the significant advantage such as generating gross efficiency and more and more receiving publicity.And electricity generation system can adopt the heat engine of the different principle such as steam turbine, gas turbine, Stirling engine.

Gas turbine is take the gas of continuous-flow as working medium, the rotary power machinery of thermal power transfer as mechanical power, mainly comprises compressor, working medium heating device, turbine, control system and auxiliary equipment etc.Its operation principle is: air is after the compressor compression, and heat absorption heats up in heater, then enters the turbine expansion acting, drives the generator generating.

The effect of working medium heating device is to convert solar energy into heat energy, pass to simultaneously air, remain at present in following key issue and need to solve: 1) how to solve solar energy not enough or when unstable, rainy day for example, early, do not have evening solar energy or solar energy deficiency, cloud layer to block in short-term, cause the unsettled problem of operation of electric power system, thereby improve stability and the controllability of the external output current in solar power plant; 2) how to make solar energy by the heat sink efficient absorption, be converted into heat energy, and heat energy is passed to working medium (air) fast and efficiently.

In view of this, demand urgently for the problems referred to above, improve the structure of the working medium heating device of existing gas turbine solar power system, make it can radiation event direct according to solar energy, solar energy is combined with other fuel gas utilization, with stability and the controllability of keeping the external output current of electricity generation system.

Summary of the invention

The technical problem to be solved in the present invention is for providing a kind of working medium heating device of gas turbine solar power system, it can radiation event direct according to solar energy, solar energy is combined with other fuel gas utilization, keep stability and the adjustability of the external output current of electricity generation system.

For solving the problems of the technologies described above, the invention provides the working medium heating device of gas turbine solar power system, comprise the cold air runner, heat collector cavity and the hot-air channel that are communicated with successively, described hot-air channel is formed by connecting by the inner casing of front side and the concurrent heating section of rear side; Also comprise that solar energy heats the gas burner that once adds hot-air of described concurrent heating intersegmental part when not enough, described burner is located at described concurrent heating section; The combustion head of described burner is set with cyclone outward, described cyclone is provided with kuppe outward, described combustion head, described cyclone and described kuppe surround inner chamber, burner housing and described kuppe surround secondary-air passage, and described secondary-air passage and described inner chamber are communicated with described hot-air channel; Described burner also is provided with the air leading-in conduit that is communicated with described secondary-air passage and described inner chamber.

Preferably, described air leading-in conduit is provided with tap hole, and described air leading-in conduit is communicated with described secondary-air passage and described inner chamber by described tap hole.

Preferably, the fuel outlet place of described combustion head is provided with end plates, and described end plates are provided with the fuel injection pipe of at least 3 outwards, also are provided with the igniting jet pipe, and described igniting jet pipe extends the ignition electric nozzle of described burner.

Preferably, described cyclone is the inner structure that a plurality of pod apertures evenly are set, and the axis of described pod apertures and the axis of described cyclone are different surface beeline.

Preferably, described heat collector cavity is surrounded by cloche, main absorber and secondary absorber, and the thickness of described main absorber is increased to both sides gradually by middle part.

Preferably, described cloche front side is provided with front end-plate, the front side of described front end-plate is provided with coolant jacket, and described coolant jacket is provided with the coolant flow chamber, and the both sides in described coolant flow chamber are respectively equipped with the first joint of flowing to for described cooling fluid, be used for described cooling fluid flows out the second joint.

Preferably, described burner is fixedly connected with described concurrent heating section.

Preferably, described burner and described concurrent heating section are split-type structural, both removably connect.

The working medium heating device of gas turbine solar power system provided by the invention, it comprises the gas burner that once adds hot-air of heating concurrent heating intersegmental part when solar energy is not enough, this burner is located at the concurrent heating section of working medium heating device; The combustion head of described burner is set with cyclone outward, described cyclone is provided with kuppe outward, described combustion head, described cyclone and described kuppe surround inner chamber, burner housing and described kuppe surround secondary-air passage, and described secondary-air passage and described inner chamber are communicated with described hot-air channel; Described burner also is provided with the air leading-in conduit that is communicated with described secondary-air passage and described inner chamber.

adopt above-mentioned structure, in the course of the work, cold air (having had higher temperature with respect to the normal temperature atmosphere) from the upstream compressor enters the cold air runner of annular through the cold air input pipe, then transfer Radial Flow in the rear end of front end-plate, enter secondary absorber, enter heat collector cavity after the absorption heat and absorb again heat in secondary absorber, become and once add hot-air and enter hot-air channel, after detecting its temperature, the first temperature sensor through being located at concurrent heating section front end enters the concurrent heating section, if its temperature reaches design load, once add hot-air and enter the high temperature air efferent duct, be imported into the gas turbine in downstream, externally acting, if its temperature does not reach design load, start burner, the above-mentioned hot-air that once adds is further heated, until after meeting the requirement of the second temperature sensor, through the high temperature air efferent duct, transport to downstream.

Can be found out by the above-mentioned course of work, when weather is sunny, when solar energy is sufficient, above-mentioned working medium heating device can work independently with solar energy; When solar energy is not enough, can adopt solar energy and combustion gas to work simultaneously; Before the sun rises, set after, when perhaps the ground long period such as overcast and rainy does not have the solar energy direct projection, can stop the input of cold air, externally generate electricity and only by the work of burner, keep system.

Therefore, adopt the working medium heating device of said structure, can radiation event direct according to solar energy, utilization combines solar energy with other fuel gas, the hot-air that once adds to the concurrent heating section when solar energy is not enough carries out gas complementary combustion, due to burner simple in structure, cost of manufacture is lower, makes working medium heating device in the situation that cost is not high, has realized still keeping stability and the adjustability of the external output current of electricity generation system when solar energy is not enough.

In the concrete embodiment of another kind, the thickness of above-mentioned main absorber can be increased to both sides gradually by middle part.The sunlight energy distribution density that converges according to the optically focused dish as can be known, for main absorber, the energy density of its central part is the highest, along with the energization density of radius reduces gradually, main absorber is designed to position, central part Thickness Ratio both sides thickness little, adopt this mechanism, can make the sunlight that converges the shortest in the centre flow process, its pressure loss is minimum, percolation flow velocity is the highest, convection transfer rate is maximum, with the energy density distribution rule of solar energy, coordinates preferably, reaches best assimilation effect.

Description of drawings

Fig. 1 is a kind of structural representation of the specific embodiment of the working medium heating device of gas turbine solar power system provided by the present invention;

Fig. 2 is the partial enlarged view at I place in Fig. 1;

Fig. 3 is the axonometric drawing of the second specific embodiment of the combustion head in Fig. 1;

Fig. 4 is the front view of the first specific embodiment of the cyclone in Fig. 1;

Fig. 5 is the axonometric drawing of Fig. 4;

Fig. 6 is the structural representation of the second specific embodiment of the cyclone in Fig. 1;

Fig. 7 is the structural representation of the main absorber in Fig. 1;

Fig. 8 is the structural representation of the another kind of specific embodiment of the working medium heating device of gas turbine solar power system provided by the present invention;

Fig. 9 is the structural representation of the third specific embodiment of the working medium heating device of gas turbine solar power system provided by the present invention.

Wherein, the Reference numeral in Fig. 1 to Fig. 9 and the corresponding relation between component names are:

1 cooling fluid 2 second joint 3 coolant jackets

4 coolant flow chamber 5 cold air runner 6 shell leading portions

The 7 outer heat insulation layer 9 shell back segments of heat collector cavity 8

10 internal insulation 11 first fastening assembly 12 first temperature sensors

13 concurrent heating section 14 heat-insulation layer 15 high temperature air efferent ducts

16 second temperature sensor 17 hot-air 18 afterburning air

19 three-temperature sensor 20 burner 21 fuel inlet pipes

22 fuel 23 cold air input pipe 24 the 4th temperature sensors

25 cold air 26 hot-air channels 27 once add hot-air

The 28 main absorber 30 absorber mounting brackets of inner casing 29

The 31 second fastening assembly 32 secondary absorbers of cloche 33

34 first joint 35 front end-plate 36 seal members

37 sunlight that converges 38 burner housing 39 kuppes

40 cyclone 41 combustion head 42 spark arresters

43 secondary-air passage 44 ignition electric nozzle 45 air leading-in conduits

46 tap hole 47 air-flow directing vane 48 pod apertures

49 fuel injection pipe 50 igniting jet pipes

The specific embodiment

Core of the present invention is for providing a kind of working medium heating device of gas turbine solar power system, it can radiation event direct according to solar energy, solar energy is combined with other fuel gas utilization, also can keep stability and the adjustability of the external output current of electricity generation system when solar energy is not enough.

In order to make those skilled in the art understand better technical scheme of the present invention, below take the working medium heating device of dish formula gas turbine solar power system as example, the present invention is described in further detail with specific embodiment by reference to the accompanying drawings.

Please refer to Fig. 1, Fig. 1 is a kind of structural representation of the specific embodiment of the working medium heating device of gas turbine solar power system provided by the present invention.

In a kind of concrete embodiment, as shown in Figure 1, the working medium heating device of gas turbine solar power system provided by the present invention comprises shell leading portion 6, shell back segment 9 and concurrent heating section 13, and the three is linked to be coaxial integral body; Shell leading portion 6 front sides are connected with the front end-plate 35 that has lightlng hole by flange, the inboard of front end-plate 35 is provided with cloche 32, cloche 32 connects absorber mounting bracket 30 by the second fastening assembly 31, be provided with the secondary absorber 33 of annular between absorber mounting bracket 30 and front end-plate 35, be provided with main absorber 29 between absorber mounting bracket 30 and inner casing 28, cloche 32, main absorber 29 and secondary absorber 33 surround heat collector cavity 7 jointly, and also are provided with seal member 36 between front end-plate 35 and cloche 32; The inwall of shell leading portion 6, shell back segment 9 and front end-plate 35 is provided with outer heat insulation layer 8, the inner casing 28 of working medium heating device is coaxial to be arranged on boss on the front end flange outside of concurrent heating section 13, both form hot-air channel 26, the outside of concurrent heating section 13 is provided with heat-insulation layer 14; The outside of inner casing 28 is provided with internal insulation 10, forms the cold air runner 5 of annular between internal insulation 10 and outer heat insulation layer 8; The outside of above-mentioned shell back segment 9 also connects cold air input pipe 23, and above-mentioned cold air input pipe 23, cold air runner 5, heat collector cavity 7 and hot-air channel 26 are communicated with successively; Above-mentioned concurrent heating section 13 also is provided with gas burner 20, and this burner 20 can be when solar energy be not enough, heating concurrent heating section 13 inside once add hot-air 27.

adopt above-mentioned structure, in the course of the work, cold air 25 (having had higher temperature with respect to the normal temperature atmosphere) from the upstream compressor enters the cold air runner 5 of annular through cold air input pipe 23, then transfer Radial Flow in the rear end of front end-plate 35, enter secondary absorber 33, enter heat collector cavity 7 absorption heats absorb heat in secondary absorber 33 after, become and once add hot-air 27 and enter hot-air channel 26, after detecting its temperature, the first temperature sensor 12 through being located at concurrent heating section 13 front ends enters concurrent heating section 13, if its temperature reaches design load, once add hot-air 27 and enter high temperature air efferent duct 15, be imported into the gas turbine in downstream, externally acting, if its temperature does not reach design load, start gas burner 20, the above-mentioned hot-air 27 that once adds is further heated, until after meeting the requirement of the second temperature sensor 16, through high temperature air efferent duct 15, transport to downstream.

Can be found out by the above-mentioned course of work, when weather is sunny, when solar energy is sufficient, above-mentioned working medium heating device can work independently with solar energy; When solar energy is not enough, can adopt solar energy and combustion gas to work simultaneously; Before the sun rises, set after, when perhaps the ground long period such as overcast and rainy does not have the solar energy direct projection, can stop the input of cold air 25, externally generate electricity and only by the work of burner 20, keep system.

Therefore, adopt the working medium heating device of said structure, can radiation event direct according to solar energy, utilization combines solar energy with other fuel gas, the hot-air 27 that once adds to the concurrent heating section when solar energy is not enough carries out gas complementary combustion, due to burner simple in structure, cost of manufacture is lower, makes working medium heating device in the situation that cost is not high, has realized still keeping stability and the adjustability of the external output current of electricity generation system when solar energy is not enough.

Need to prove; the above-mentioned specific embodiment does not limit the specific constructive form of gas burner 20; do not limit the concrete connected mode of burner 20 and concurrent heating section 13 yet; in fact; everyly in concurrent heating section 13, be provided with gas burner 20; can carry out the working medium heating device of gas complementary combustion to the hot-air 27 that once adds in concurrent heating section 13, all in protection scope of the present invention.

In addition; the noun of locality in the above-mentioned specific embodiment " front " refers to dextrosinistral direction in accompanying drawing 1; " afterwards " refers in accompanying drawing 1 direction from left to right; be to be understood that; these nouns of locality are set up as benchmark take Figure of description herein, and their appearance should not affect protection scope of the present invention.

What specify is, the fuel gas that said burner adopts can be not only high-grade fossil fuel in natural gas, liquefied petroleum gas, coal bed gas, oven gas etc., can be also the low-grade recyclable fuels such as biogas, rubbish landfill gas, biogas, like this, the present invention can make solar energy and other fuel-bound use, expand greatly the using energy source scope, increased the extensive properties of solar power system, extremely be conducive to solve the powerup issue in the remote areas such as China rural area.

Above-mentioned cloche 32 can be designed to hemispherical or semielliptical shape structure, like this,, even higher pressure and temperature is arranged in heat collector cavity 7, also can avoid preferably cloche 32 by pressure break or thermal stress damage.Certainly, above-mentioned cloche 32 can also be set to other shapes.

The specific constructive form of said burner 20 can also further be set.

Please refer to Fig. 2, Fig. 2 is the partial enlarged view at I place in Fig. 1.

In concrete scheme, as shown in Figure 2, the outer cyclone 40 that is set with of the combustion head 41 of said burner 20, the outer kuppe 39 that is provided with of cyclone 40, combustion head 41, cyclone 40 and kuppe 39 surround the inner chamber of upper end open, burner housing 38 surrounds secondary-air passage 43 with kuppe 39, and this secondary-air passage 43 all is communicated with hot-air channel 26 with above-mentioned inner chamber; Burner 20 can also be provided with air leading-in conduit 45, and air leading-in conduit 45 all is communicated with secondary-air passage 43, inner chamber.

Adopt said structure, in the course of the work, afterburning air 18 enters air leading-in conduit 45 to said burner 20, and is divided into two-way in air leading-in conduit 45; First via air enters inner chamber, and the cyclone 40 of flowing through flows out; Simultaneously fuel gas 22, from fuel inlet pipe 21 inputs, mixes with the first via air from cyclone 40 after combustion head 41 outputs, forms flammable premixed gas, ignition electric nozzle 44 arcings of burner 20 premixed gas that ignites, and fuel 22 takes fire; Flow out the momentum that has tangential direction after cyclone 40 due to first via air, can form recirculating zone in combustion head 41 downstreams, the high-temperature gas that part has been fired refluxes in recirculating zone, light follow-up flammable mixed gas, keeps flameholding; Judge whether to light a fire successfully according to the numerical value of the second temperature sensor 16 and the first temperature sensor 12, if light a fire successfully, ignition electric nozzle 44 stops arcing, otherwise continues arcing.

The second road air enters secondary-air passage 43 by air leading-in conduit 45, along the mobile ，Gai road of burner housing 38 inwalls air, two effects is arranged under the constraint of kuppe 39: the first, can play the effect of aftercombustion; The second, flame and burner housing 38 that can local temperature is very high separate, and form air film cooling, avoid burner housing 38 ablations.Do not exist behind the localized hyperthermia district of material allowable temperature until the second road air and the complete blending of high-temperature flue gas, flow field, enter concurrent heating section 13, and once add hot-air 27 and mix, form the heat engine of hot-air 17 fed downstream of satisfied temperature requirement.

According to the temperature (the second temperature sensor 16 records) of the temperature that once adds hot-air 27 (the first temperature sensor 12 records), hot-air 17, the temperature (three-temperature sensor 19 records) of afterburning air 18, the flow of cold air 25 and temperature (the 4th temperature sensor 24 records), and the Lower heat value of fuel 22, can calculate respectively the flow of fuel 22, afterburning air 18; The chemically correct fuel of based on fuel 22, can draw afterburning air 18 and enter the flow of first and second road air after burner 20.

This shows, adopt the burner 20 of said structure, can well meet solar power system and use the occasion of air as working medium, high-temperature flue gas after fuel combustion can be directly and air blending and become the part of working medium, and do not need to adopt special heat exchanger, this mode makes working medium heating device have higher photo-thermal transformation efficiency, also has higher fuel reaction heat transference efficiency, and can be when completing gas complementary combustion, prevent burner housing 38 ablations, thereby increase the job stability of burner 20, extend its service life.

Further in scheme, above-mentioned air leading-in conduit 45 can be provided with tap hole 46, and air leading-in conduit 45 is communicated with secondary-air passage 43 and inner chamber by tap hole 46.Adopt this flow dividing structure, can realize easily the shunting of afterburning air 18, and have characteristics simple in structure, easy to process.Certainly, above-mentioned shunting mode is not limited to adopt the form of tap hole 46, and the inner that for example can also air leading-in conduit 45 is set to two pipelines, and these two pipelines are communication with cavity and secondary-air passage 43 respectively, can also be other shunting modes.

Specific constructive form about the combustion head 41 of said burner 20, as shown in Figure 2, can be the tubular structure of both ends open, and the direction of its radius from the fuel inlet to the fuel outlet increases gradually, and combustion head 41 inside are provided with spark arrester 42.The processing simple in structure, easy of the combustion head 41 of this structure.Certainly, also can adopt structure as shown in Figure 3, Fig. 3 is the axonometric drawing of the second specific embodiment of the combustion head 41 in Fig. 1, the fuel outlet that is combustion head 41 is provided with end plates, end plates are provided with the fuel injection pipe 49 of at least 3 outwards, and be provided with igniting jet pipe 50, igniting jet pipe 50 extends the ignition electric nozzle 44 of burner 20.The combustion head 41 of this structure can the enhanced burning device 20 ignition performances while starting.

About the specific constructive form of the cyclone 40 of said burner 20, can be with reference to figure 4, Fig. 5 and Fig. 6, Fig. 4 is the front view of the first specific embodiment of the cyclone in Fig. 1; Fig. 5 is the axonometric drawing of Fig. 4; Fig. 6 is the structural representation of the second specific embodiment of the cyclone in Fig. 1.

As shown in Figure 4 and Figure 5, above-mentioned cyclone 40 can evenly arrange for inside the structure of a plurality of pod apertures 48, and the axis of the axis of pod apertures 48 and cyclone 40 is different surface beeline.Like this, the momentum that air has tangential direction while flowing out cyclone 44, form recirculating zone in combustion head 41 downstreams, makes the high-temperature gas that part has been fired reflux in recirculating zone, lights follow-up flammable mixed gas, to keep flameholding, to continue to carry out.Certainly, above-mentioned cyclone can also adopt other versions, and is for example shown in Figure 6, and above-mentioned cyclone 40 can also adopt inside that the structure of a plurality of air-flow directing vanes 47 is set, and a plurality of air-flow directing vanes 47 are along the circumferential setting of cyclone 40.

The specific constructive form of above-mentioned heat collector cavity 7 can also further be set.Please refer to Fig. 7, Fig. 7 is the structural representation of the main absorber in Fig. 1.

In the concrete embodiment of another kind, as shown in Figure 7, the thickness of above-mentioned main absorber 29 can be increased to both sides b section gradually by middle part a section.The sunlight 37 Energy distribution density that converge according to the optically focused dish as can be known, for main absorber 29, the energy density of its central part is the highest, along with the energization density of radius reduces gradually, main absorber 29 is designed to as shown in Figure 7, make position, central part Thickness Ratio both sides thickness little, can make the sunlight 37 that converges the shortest in the centre flow process, its pressure loss is minimum, percolation flow velocity is the highest, convection transfer rate is maximum, with the energy density distribution rule of solar energy, coordinates preferably, reaches best assimilation effect.

Certainly, the version of above-mentioned main absorber 29 is not limited in said structure, porosity that can also main absorber 29 is set to reduce with the increase of thickness, like this, for the sunlight 37 that converges, even its flow process is identical, but, because the pressure loss and the porosity on its unit flow process is inversely proportional to, also can play identical technique effect.

What specify is, above-mentioned main absorber 29 and secondary absorber 33 all can adopt heat-resisting porous media material, for example can adopt resistant to elevated temperatures foamed ceramics, its can make air themperature be increased to 700 the degree more than, like this, can improve photo-thermal conversion efficiency and the heat transference efficiency of working medium heating device, be fit to the solar energy medium and high temperature and utilize occasion, can focus on ratio characteristic with the height of dish formula beam condensing unit has matching preferably.

Other specific constructive form of above-mentioned working medium heating device can also further be set.

In a kind of concrete embodiment, above-mentioned cloche 32 front sides are provided with front end-plate 35, the front side of above-mentioned front end-plate 35 can be provided with coolant jacket 3, coolant jacket 3 is provided with coolant flow chamber 4, and the both sides in coolant flow chamber 4 are respectively equipped with the first joint 34 of flowing to for cooling fluid 1, be used for cooling fluid 1 flows out the second joint 2.

Adopt such structure, in the course of the work, the sunlight 37 that converges enters heat collector cavity 7 to working medium heating device, because there are a lot of air gaps the porous media inside of main absorber 29, have very high blackness, namely be well absorbed in case the sunlight 37 that converges is incident upon its surface, and be converted into heat energy; But the reason due to aspects such as the accuracy of manufacture, wind, stress deformations, the reflecting surface of optically focused dish is the deviation theory design attitude likely, the sunlight 37 that causes part to converge can not enter heat collector cavity 7 from lightlng hole, but the front end-plate 35 that drops on heater causes its ablation, after coolant jacket 3 was set, cooling fluid 1 entered coolant flow chamber 4 from the first joint 34, after absorbing the heat of front end-plate 35, flow out from the second joint 2, thus job stability and the reliability of assurance heater.

The concrete connected mode of said burner 20 and concurrent heating section 13 can also further be set.

Please refer to Fig. 1, Fig. 8 and Fig. 9, Fig. 8 is the structural representation of the another kind of specific embodiment of the working medium heating device of gas turbine solar power system provided by the present invention; Fig. 9 is the structural representation of the third specific embodiment of the working medium heating device of gas turbine solar power system provided by the present invention.

In concrete scheme, said burner 20 can be fixed together with concurrent heating section 13.For example shown in Figure 1, burner 20 can be fixedly connected on the bottom of concurrent heating section 13, adopts the mode of above-mentioned shunting combustion this moment.Certainly, can also adopt as shown in Figure 8, burner 20 is located at the inside of concurrent heating section 13, fuel 22 heating parts are partly connected with solar energy heating, can cancel air leading-in conduit 45 this moment, correspondingly cancel three-temperature sensor 19, and ignition electric nozzle 44 is directly installed on the shell of concurrent heating section 13.At this moment, once add hot-air 27 temperature when inadequate when the first temperature sensor 12 predicts, start burner 20 work, the required oxygen that burns is directly from once adding hot-air 27, the heat that fuel 22 burnings produce directly makes and once adds hot-air 27 intensifications, forms hot-air 17 outputs that meet the demands.At this moment, according to temperature and the flow of the first temperature sensor 12, the second temperature sensor 16 and cold air 25, and the minimum calorific value of fuel 22, can calculate equally the flow of fuel 22.

Certainly, said burner 20 and the mode that concurrent heating section 13 is not limited to be fixedly connected with, can also adopt structure as shown in Figure 9, and namely burner 20 is split-type structural with concurrent heating section 13, both removably connects.This structure is to be blended into and once to add in hot-air 27 by the high-temperature flue gas that pipeline produces burner 20, until produce the hot-air 17 fed downstream heat engines of the preset requirement that meets the second temperature sensor 16.Adopt such structure, make working medium heating device have easy for installation, dismantle simple characteristics.

What specify is, this paper has only introduced the technique effect of above-mentioned working medium heating device take dish formula gas turbine solar power system as example, in fact, above-mentioned working medium heating device is only for being used for dish formula gas turbine, can also be used for other gas turbine solar power system, such as tower type gas turbine solar power system etc.

Above working medium heating device to a kind of gas turbine solar power system provided by the present invention is described in detail.Applied specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of the claims in the present invention.

Claims (8)

1. the working medium heating device of gas turbine solar power system, comprise the cold air runner (5), heat collector cavity (7) and the hot-air channel (26) that are communicated with successively, described hot-air channel (26) is formed by connecting by the inner casing (28) of front side and the concurrent heating section (13) of rear side; It is characterized in that, also comprise that solar energy heats the inner gas burner that once adds hot-air (27) (20) of described concurrent heating section (13) when not enough, described burner (20) is located at described concurrent heating section (13); The outer cyclone (40) that is set with of the combustion head (41) of described burner (20), the outer kuppe (39) that is provided with of described cyclone (40), described combustion head (41), described cyclone (40) and described kuppe (39) surround inner chamber, burner housing (38) surrounds secondary-air passage (43) with described kuppe (39), and described secondary-air passage (43) and described inner chamber all are communicated with described hot-air channel (26); Described burner (20) also is provided with the air leading-in conduit (45) that is communicated with described secondary-air passage (43) and described inner chamber.

2. the working medium heating device of gas turbine solar power system according to claim 1, it is characterized in that, described air leading-in conduit (45) is provided with tap hole (46), and described air leading-in conduit (45) is communicated with described secondary-air passage (43) and described inner chamber by described tap hole (46).

3. the working medium heating device of gas turbine solar power system according to claim 1, it is characterized in that, the fuel outlet place of described combustion head (41) is provided with end plates, described end plates are provided with the fuel injection pipe (49) of at least 3 outwards, also be provided with igniting jet pipe (50), described igniting jet pipe (50) extends the ignition electric nozzle (44) of described burner (20).

4. the working medium heating device of gas turbine solar power system according to claim 1, it is characterized in that, described cyclone (40) evenly arranges the structure of a plurality of pod apertures (48) for inside, the axis of the axis of described pod apertures (48) and described cyclone (40) is different surface beeline.

5. the working medium heating device of according to claim 1-4 described gas turbine solar power systems of any one, it is characterized in that, described heat collector cavity (7) is surrounded by cloche (32), main absorber (29) and secondary absorber (33), and the thickness of described main absorber (29) is increased to both sides gradually by middle part.

6. the working medium heating device of gas turbine solar power system according to claim 5, it is characterized in that, described cloche (32) front side is provided with front end-plate (35), the front side of described front end-plate (35) is provided with coolant jacket (3), described coolant jacket (3) is provided with coolant flow chamber (4), and the both sides in described coolant flow chamber (4) are respectively equipped with the first joint (34) that flows to for described cooling fluid (1), the second joint (2) that is used for described cooling fluid (1) outflow.

7. the working medium heating device of gas turbine solar power system according to claim 1, is characterized in that, described burner (20) is fixedly connected with described concurrent heating section (13).

8. the working medium heating device of gas turbine solar power system according to claim 1, is characterized in that, described burner (20) is split-type structural with described concurrent heating section (13), both removably connects.

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