CN101493038A - Shunting two-pump two-stage low-grade gas externally heating type turbine engine - Google Patents
Shunting two-pump two-stage low-grade gas externally heating type turbine engine Download PDFInfo
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- CN101493038A CN101493038A CNA2008100330896A CN200810033089A CN101493038A CN 101493038 A CN101493038 A CN 101493038A CN A2008100330896 A CNA2008100330896 A CN A2008100330896A CN 200810033089 A CN200810033089 A CN 200810033089A CN 101493038 A CN101493038 A CN 101493038A
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Abstract
A divided flow two-level turbine engine with two pumps and a special combustion system form a circulating two-level low grade fuel gas externally heated turbine engine with two pumps. The turbine engine is composed of a two-level turbine, two turbine shafts, a two-level booster pump wheel and an expansion chamber shell. The special combustion system is composed of a gas storage tank, an anti backfire device, an air-fuel ratio adjuster, a gas booster and a combustion chamber with electric heating wire mesh; an outlet of the combustion system is communicated with the lower end of the expansion chamber shell or is communicated with a heat interchanger connected with a low thermal resistance of the expansion chamber shell, and the hot air generated in the special combustion system heats up and expands gas inside the expansion chamber shell, is converted into high grade mechanical energy and is output. In the invention, harmful gases generated in the process of mining and refining by enterprises such as coal mines and oil fields and the like are converted into output power or electric energy with very low cost, thus not only eliminating pollution but also saving precious energy.
Description
Affiliated technical field
The present invention relates to the shunting two-pump two-stage low-grade gas externally heating type turbogenerator.
Background technique
Low-grade fuel, the present invention only is meant certain inflammable gas or multiple inflammable gas, mix with other gas, and shared ratio is very little, and is little to having lost commercial application value, so low-grade fuel is thin, dispersion, unsettled.Low-grade fuel generally is difficult to light, even light, and also can auto extinguishing; Even sustained combustion, temperature are also very low.In exploitation and extractive process,, can produce atmospheric pollution in enterprises such as colliery, oil fields, in addition purified treatment consuming cost again if these low-grade fuels directly are discharged in the atmosphere.
Summary of the invention
The objective of the invention is to provide the shunting two-pump two-stage low-grade gas externally heating type turbogenerator.
The present invention solves the technological scheme that its technical problem takes: form a shunting two-pump two-stage low-grade gas externally heating type turbogenerator with shunting two-pump two-stage turbine engine and special kind firing system.Low-grade gas comprises thin inflammable gas that produces in the oilfield exploitation extractive process of colliery and composition thereof.Shunting two-pump two-stage turbine engine is made up of two-stage turbine, turbine shaft, two-level booster pump wheel, guide wheel and expansion chamber housing.The special kind firing system is made up of gas holder, backfire controller, air fuel ratio regulator, gas booster and heating wire net firing chamber.Adopt the outlet of special kind firing system to be connected with expansion chamber housing lower end, be shaped on spiral on the expansion chamber housing and rise and cross section diminishing semicircular shell hot gas runner, the hot gas that sprays from the special kind firing system enters the expansion chamber housing by this spiral shell shell hot gas runner and converts the output of high-grade mechanical energy to; Perhaps adopt the outlet of special kind firing system to be connected with the heat exchanger that is connected with expansion chamber housing low thermal resistance.Make the gas heating expansion in the expansion chamber and convert the output of high-grade mechanical energy to by heat exchanger from the hot gas of special kind firing system ejection.
As to improvement of the technical scheme: adopt and the integrally manufactured housing heat exchanger of expansion chamber housing; Be provided with above the booster pump wheel of the second level bell cowling and/or first order turbine below the bell cowling is set; Make first order turbine opposite with second level turbine sense of rotation; And to expansion chamber housing employing heat insulation layer.
Beneficial effect of the present invention comprises: enterprises such as colliery, oil field these harmful gases of producing in exploitation and extractive process can be converted into outputting power or electric energy with the cheap the manner that becomes, can separate depollution, save the valuable energy again, had high economic value.Utilize the working method of housing heat exchanger standard, owing to do not re-use the forced gas supercharging technology, hot gas directly is circulated in the expansion chamber of certain low pressure, only need uses common ventilating fan just can finish, so can reduce the huge energy consumption of motor self greatly.This kind working form also is fit to the used heat of thermoelectricity plant, cement plant, Iron And Steel Plant, various stoves and the gas converting heat in underground heat and the turbogenerator very much, and converts it into the output of high-grade mechanical energy.The special kind firing system combines with low-grade spiral shell shell or heat exchange-type turbogenerator, have five kinds of different structures and ten kinds of compound modes, shunting two-pump two-stage low-grade gas externally heating type turbogenerator of the present invention adopts two-level booster pump wheel can make the gas in the expansion chamber housing obtain ratio only with the higher pressure of one-level booster pump wheel, thereby makes the power of turbogenerator increase greatly.Adopt the opposite turbine of two-stage sense of rotation that thermal conversion efficiency is improved greatly.Adopt spiral rising and the diminishing semicircle hot gas runner in cross section can make full use of the kinetic energy of hot air flow in the expansion chamber, and make hot air flow be in the optimum state the heating of air.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 and Fig. 2 are two embodiments' of shunting two-pump two-stage low-grade gas externally heating type turbogenerator structure cut-away views.
1. special kind firing systems among the figure, 2. shunting two-pump two-stage spiral shell shell turbogenerator, 3. gas holder, 4. backfire controller, 5. air fuel ratio regulator, 6. gas booster, 7. heating wire net firing chamber, 8. first order turbine, 9. second level turbine, 10. first turbine shaft, 11. second turbine shaft, 12. first order booster pump wheel, 13. second level booster pump wheel, 14. guide wheels, 15. expansion chamber housing, 16. generator, 17. bell cowlings, 18. air intake framves, 19. spiral shell shell hot gas runner, 20. shunting two-pump two-stage heat exchange turbogenerator, 21. housing heat exchangers, 22. heat exchanger exits.
Embodiment
In Fig. 1, special kind firing system 1 and shunting two-pump two-stage spiral shell shell turbogenerator 2 are formed a shunting two-pump two-stage low-grade gas spiral shell shell turbogenerator.Special kind firing system 1 is made up of gas holder 3, backfire controller 4, air fuel ratio regulator 5, gas booster 6 and heating wire net firing chamber 7.Shunting two-pump two-stage spiral shell shell turbogenerator 2 is made up of first order turbine 8, second level turbine 9, first turbine shaft 10, second turbine shaft 11, first order booster pump wheel 12, second level booster pump wheel 13, guide wheel 14 and expansion chamber housing 15.First order turbine 8 connects first order booster pump wheel 12 and second level booster pump wheel 13.Guide wheel 14 is fixedly mounted on the inwall of the expansion chamber housing 15 in the middle of the two-level booster pump wheel.Second level turbine 9 is connected with generator 16 by second turbine shaft 11.First order turbine 8 is opposite with second level turbine 9 sense of rotation.Above the second level booster pump wheel 13 with below the first order turbine 8 a bell cowling 17 is being set respectively.Below expansion chamber housing 15, contain an air intake frame 18.Being shaped on spiral on the expansion chamber housing 15 rises and cross section diminishing semicircular shell hot gas runner 19.The outlet of the heating wire net firing chamber 7 of special kind firing system 1 is connected with expansion chamber housing 15 lower ends.Expansion chamber housing 15 has heat insulation layer to reduce heat waste.
Working principle embodiment illustrated in fig. 1 is: the low-grade gas in the gas holder 3 is entered heating wire net firing chamber 7 through backfire controller 4 by gas booster 6 pumpings.The concentration that air fuel ratio regulator 5 is regulated the low-grade gas that enters heating wire net firing chamber 7 by the influx of control air guarantees that the turbine engine system working stability is efficient.The mixed gas that enters heating wire net firing chamber 7 is lighted by the heating wire net and fully thoroughly burning.The hot gas that burning produces enters spiral shell shell hot gas runner 19.Because these hot gas have heat energy and kinetic energy, and spiral shell shell hot gas runner 19 provides condition for the kinetic energy that makes full use of hot air flow.Near spiral shell shell hot gas runner 19, hot gas with enter the abundant heat exchange of pressurized air of expansion chamber housing 15 from air intake frame 18 and make air expansion produce potential energy.These potential energy and kinetic energy promote first order turbine 8 jointly and rotate, and first order turbine 8 drives first order booster pump wheel 12 and second level booster pump wheel 13.Through the supercharging of two-stage pump impeller, make the pressure that enters in the expansion chamber housing 15 from air intake frame 18 further improve.The air of supercharging produces bigger pressure through the hot gas heating, promotes first order turbine 8 and quickens to rotate.This makes the pressurization of two-level booster pump wheel further strengthen again, forms the snowslide reaction thus, reaches the purpose that increases air intake pressurized.8 of first order turbines have absorbed the energy acting of a part of expansion, leave energy remaining for second level turbine 9 and continue to absorb acting.Turbine 9 works in the second level pass to generator 16 by second turbine shaft 11 and are converted into electric energy output.
In Fig. 2, special kind firing system 1 and shunting two-pump two-stage heat exchange turbogenerator 20 are formed a shunting two-pump two-stage low-grade gas heat exchange turbogenerator.Special kind firing system 1 is made up of gas holder 3, backfire controller 4, air fuel ratio regulator 5, gas booster 6 and heating wire net firing chamber 7.Shunting two-pump two-stage heat exchange turbogenerator 20 is made up of first order turbine 8, second level turbine 9, first turbine shaft 10, second turbine shaft 11, first order booster pump wheel 12, second level booster pump wheel 13, guide wheel 14 and expansion chamber housing 15.First order turbine 8 connects first order booster pump wheel 12 and second level booster pump wheel 13.Guide wheel 14 is fixedly mounted on the inwall of the expansion chamber housing 15 in the middle of the two-level booster pump wheel.Second level turbine 9 is connected with generator 16 by second turbine shaft 11.First order turbine 8 is opposite with second level turbine 9 sense of rotation.Above the second level booster pump wheel 13 with below the first order turbine 8 a bell cowling 17 is being set respectively.Below expansion chamber housing 15, contain an air intake frame 18.Housing heat exchanger 21 is integrally manufactured with expansion chamber housing 15.The outlet of the heating wire net firing chamber 7 of special kind firing system 1 is connected with housing heat exchanger 21.From the hot gas of the outlet of heating wire net firing chamber 7 ejection by housing heat exchanger 21 with the air heating in the expansion chamber housing 15, self cooling back enters atmosphere from heat exchanger exit 22.Transfer to expansion chamber housing 15 interior heat energy in air and convert the output of high-grade mechanical energy to by shunting two-pump two-stage heat exchange turbogenerator 20.Housing heat exchanger 21 has heat insulation layer to reduce heat waste.
Working principle embodiment illustrated in fig. 2 is: the low-grade gas in the gas holder 3 is entered heating wire net firing chamber 7 through backfire controller 4 by gas booster 6 pumpings.The concentration that air fuel ratio regulator 5 is regulated the low-grade gas that enters heating wire net firing chamber 7 by the influx of control air makes system works more stable effectively.The mixed gas that enters heating wire net firing chamber 7 is lighted by the heating wire net and fully thoroughly burning.The hot gas that burning produces enters housing heat exchanger 21, with the abundant heat exchange of pressurized air that enters expansion chamber housing 15 from air intake frame 18 and make air expansion produce potential energy.These potential energy promote first order turbine 8 and rotate, and first order turbine 8 drives first order booster pump wheel 12 and second level booster pump wheel 13.Through the supercharging of two-stage pump impeller, make the pressure that enters in the expansion chamber housing 15 from air intake frame 18 further improve.The air of supercharging produces bigger pressure through heat exchange, promotes first order turbine 8 and quickens to rotate.This makes the pressurization of two-level booster pump wheel further strengthen again, forms the snowslide reaction thus, reaches the purpose that increases air intake pressurized.8 of first order turbines have absorbed the energy acting of a part of expansion, leave energy remaining for second level turbine 9 and continue to absorb acting.Turbine 9 works in the second level pass to generator 16 by second turbine shaft 11 and are converted into electric energy output.
Here will emphasize: the rotation owing to two-level booster pump wheel among Fig. 1 embodiment makes the gases in the expansion chamber housing 15 rotate according to helical curve.The angle of spiral shell shell hot gas runner 19 is identical with the moving direction of the swirling eddy that two-level booster pump wheel produces, thereby has strengthened the air motion energy, more helps the energy utilized of two-stage turbine.
Point out that in passing Fig. 1 embodiment is because the power that gas booster 6 consumes is very big, combustion gas directly is circulated into mode in the expansion chamber housing 15, be worth not necessarily very big.Therefore also can adopt Fig. 2 embodiment's method: adopt housing heat exchanger 21 to provide heat energy for low-grade motor.Which kind of is better for this dual mode, must be by the experiment decision.
Existing gas turbine engine all is provided with multistage guide wheel mechanism, and they all have beneficial effect in many occasions.But discover through us: the existence of guide wheel mechanism also makes the structure complicated of motor simultaneously, but also influences efficiency of engine.If can adopt reversible turbine and pump impeller to replace guide wheel, both can simplified structure, can increase work efficiency greatly again.So only adopt a guide wheel here.
Claims (4)
1. the shunting two-pump two-stage low-grade gas externally heating type turbogenerator is made up of shunting two-pump two-stage turbine engine and special kind firing system; Low-grade gas comprises thin inflammable gas that produces in the oilfield exploitation extractive process of colliery and composition thereof; Shunting two-pump two-stage turbine engine is made up of two-stage turbine, two turbine shafts, the two poles of the earth booster pump wheel, guide wheel and expansion chamber housings; Adopt the outlet of special kind firing system to be connected with expansion chamber housing lower end, be shaped on spiral on the expansion chamber housing and rise and cross section diminishing semicircular shell hot gas runner, the hot gas that sprays from the special kind firing system enters the expansion chamber housing by this spiral shell shell hot gas runner and converts the output of high-grade mechanical energy to; Perhaps adopt the outlet of special kind firing system to be connected with the heat exchanger that is connected with expansion chamber housing low thermal resistance, make the gas heating expansion in the expansion chamber housing and convert the output of high-grade mechanical energy to by heat exchanger from the hot gas of special kind firing system ejection, it is characterized in that containing a special kind firing system that forms by gas holder, backfire controller, air fuel ratio regulator, gas booster and heating wire net firing chamber.
2. motor according to claim 1, the outlet that it is characterized in that the special kind firing system with and the integrally manufactured housing heat exchanger of expansion chamber housing be connected.
3. motor according to claim 1 and 2 is characterized in that containing a bell cowling above the booster pump wheel of the second level and/or contain a bell cowling below first order turbine.
4. motor according to claim 1 and 2 is characterized in that the expansion chamber housing contains heat insulation layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100330896A CN101493038A (en) | 2008-01-25 | 2008-01-25 | Shunting two-pump two-stage low-grade gas externally heating type turbine engine |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA2008100330896A CN101493038A (en) | 2008-01-25 | 2008-01-25 | Shunting two-pump two-stage low-grade gas externally heating type turbine engine |
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| CN101493038A true CN101493038A (en) | 2009-07-29 |
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| CNA2008100330896A Pending CN101493038A (en) | 2008-01-25 | 2008-01-25 | Shunting two-pump two-stage low-grade gas externally heating type turbine engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091745A (en) * | 2017-04-19 | 2017-08-25 | 西南石油大学 | Vortex engine efficiency test device and method of testing that coal bed gas generates electricity |
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- 2008-01-25 CN CNA2008100330896A patent/CN101493038A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107091745A (en) * | 2017-04-19 | 2017-08-25 | 西南石油大学 | Vortex engine efficiency test device and method of testing that coal bed gas generates electricity |
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Open date: 20090729 |