CN202125410U

CN202125410U - Supercritical carbon dioxide gas turbine power generation system for absorbing geothermy by using superconducting pipes

Info

Publication number: CN202125410U
Application number: CN 201120223577
Authority: CN
Inventors: 贾泽民; 王仁贤
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-29
Filing date: 2011-06-29
Publication date: 2012-01-25
Anticipated expiration: 2021-06-29

Abstract

The utility model discloses a supercritical carbon dioxide gas turbine power generation system for absorbing geothermy by using superconducting pipes. The supercritical carbon dioxide gas turbine power generation system comprises a multi-tasking motor, a carbon dioxide circulating loop and a geothermal heating pump; the multi-tasking motor has the functions of a driving motor and an engine at the same time and is switched by an energy switching unit; the multi-tasking motor is respectively connected with a centrifugal compressor and a gas turbine and further comprises an energy control unit for controlling voltage distribution and collection of the multi-tasking motor; the geothermal heating pump comprises a superconducting member; one ends of the superconducting pipes extend to a geothermal source and the other ends are combined with the carbon dioxide circulating loop to form a first heat exchange device; the carbon dioxide circulating loop supplies a carbon dioxide supplying source; the carbon dioxide is processed by a pressurizing pump and the first heat exchange device to become the supercritical state; thereby, the gas turbine is driven by the supercritical carbon dioxide and the power generating purpose is achieved.

Description

Utilize superconducting pipe to absorb the supercritical carbon dioxide air turbine power generation system of underground heat

Technical field

The utility model is a kind of supercritical carbon dioxide air turbine power generation system of utilizing superconducting pipe to absorb underground heat; Refer in particular to a kind of good superconducting pipe of thermal conductivity that utilizes and absorb underground heat, make carbon dioxide reach supercritical state and promote the electrification structure that air turbine produces electric energy according to this.

Background technique

Geothermal power is to be derived from the inner natural heat energy of the earth's crust, and this energy exists with the heating power form from the lava of earth interior, is the energy that causes volcano eruption and earthquake.See through phreatic flow and lava influxs overhead 1 to 5 kilometer the earth's crust, heating power is able to transferred to more subaerial place.The lava of high temperature is with near underground water heating, and these warmed-up water finally can ooze out ground or form steam explosion.Therefore, just favourable maybe being somebody's turn to do with underground heat erupted the generation mode of steam as generated energy.From present known geothermal power generation form, be broadly divided into two kinds of fresh steam method and secondary steam methods.The fresh steam genealogy of law is directly utilized underground saturated natural steam, perhaps utilizes the steam of from vapour, aqueous mixtures, separating directly to drive the steam turbine generator and produces electric energy.Natural law is guided secondary steam steam? Once steam it through a heat exchanger, the heat contained in the use of natural steam vapor clean water, then use the clean steam? Secondary steam to drive a steam turbine generator.Though compared to the unstability of solar energy and wind-force, geothermal power is the reliable energy, if the good hot swapping of shortcoming then is difficult to effectively with geothermal energy utilization; In addition, contain higher mineral substance in the geothermal vapour, accumulate the chock tube road easily, cause generating efficiency to reduce, this then is another disappearance of geothermal power generation; In addition, toxic gases such as sulphur, boron can spray with steam, except meeting infringement facility, also can cause environmental pollution.In view of this, being necessary to provide a kind of can effectively utilize geothermal energy, and to the unlikely generation mode that impacts of environment.

Summary of the invention

The utility model main purpose is to provide a kind of supercritical carbon dioxide air turbine electrification structure that utilizes superconducting pipe to absorb underground heat, and it can absorb underground heat merely and be transformed into the energy of supercritical state as carbon dioxide, has the effect of environmental protection simultaneously.

For achieving the above object; The technological means that the utility model proposed is to provide a kind of supercritical carbon dioxide air turbine power generation system of utilizing superconducting pipe to absorb underground heat; It comprises a Multi task motor, a carbon dioxide circulation loop, reaches a underground heat heat pump; This underground heat heat pump comprises at least one superconducting pipe member, and an end of those superconducting pipes extends to geothermal source, the other end then with the common framework of carbon dioxide circulation loop in one first heat exchanger; This carbon dioxide circulation loop comprises the source that provides of a carbon dioxide; The source that provides of this carbon dioxide forms supercritical state through a compression pump and through this first heat exchanger earlier, and this compression pump sees through a pressure controller makes the pressure of carbon dioxide be maintained at critical pressure; The outlet section of this first heat exchanger is provided with a flow control valve, sees through the flow velocity of a temperature controller modulation carbon dioxide, with the temperature maintenance of control carbon dioxide in critical temperature; This Multi task shaft of motor links respectively has a centrifugal compressor, and a gas turbine, sees through an energy switching unit switches the Multi task motor according to the real-world operation condition operating mode; More comprise an energy control unit, in order to control the Multi task motor in the voltage distribution and the collection of drive motor pattern or generator mode.

When the Multi task motor earlier with drive motor pattern active transport; The supercritical state carbon dioxide that centrifugal compressor drives in the carbon dioxide circulation loop forms the pressure that is fit to promote gas turbine; When the outputting torsion of gas turbine and rotating speed enough promote the Multi task motor; This energy switching unit just can switch to generator mode with this Multi task motor, and then reaches the purpose of utilizing the gas turbine generating.

The utility model utilizes supercritical carbon dioxide as the driving medium that promote gas turbine, and this carbon dioxide constantly recycles in whole loop, sees through superconducting pipe acquisition underground heat heat and gets and be transformed into the required heat of supercritical state in the carbon dioxide circulation loop; Therefore; Utilize the structure of natural steam generating in the known technology, the utility model simple in structure and pipeline inner wall card dirt can not be arranged and influence the disappearance of heat transfer efficiency, in addition; Operation more can not produce other harmful matter; Generally speaking, the utlity model has the effect of environmental protection, and the whole system structure is simplified and really can be improved generating efficiency; Construction cost to the underground heat power generating equipment certainly will significantly reduce, and helps to improve the application of geothermal energy resources really.

Description of drawings

Fig. 1 is the structural representation of the utility model preferred embodiment.

Label declaration:

10. Multi task motor; 11. centrifugal compressor;

12. gas turbine; 13. energy switching unit;

14. energy control unit; 20. carbon dioxide circulation loop;

P01. compression pump; PIC1. pressure controller;

CV1. flow control valve; CV2. three dimensional flow control valve;

CV3. flow dontroller; TIC1. temperature controller;

TIC2. temperature controller; PIC2. pressure controller;

P02. gas compressor; 21. second heat exchanger;

30. underground heat heat pump; 31. superconducting pipe;

32. first heat exchanger; 40. geothermal source.

Embodiment

For the structure characteristic, effect and other advantage that make the utility model can further be understood, now with preferred embodiment and cooperate graphic detailed description as after.

At first; Please refer to shown in Figure 1; Be that the utility model utilizes superconducting pipe to absorb the supercritical carbon dioxide air turbine power generation system preferred embodiment of underground heat, comprise a Multi task motor 10, this Multi task motor 10 is provided with a centrifugal compressor 11 and a gas turbine 12; One carbon dioxide circulation loop 20, make carbon dioxide be in supercritical state and ringing in centrifugal compressor 11 and gas turbine 12; And a underground heat heat pump 30, having superconducting pipe 31 members, superconducting pipe 31 extends in geothermal source and can underground heat heat acquisition continuously be utilized; Wherein:

This underground heat heat pump 30 comprises at least one superconducting pipe 31 members, and one first heat exchanger 32 of while framework on those superconducting pipes 31 and carbon dioxide circulation loop; This superconducting pipe 31 is a kind of vacuum body that is sealed with the excellent heat conductivity medium; Heat-conducting medium can be passed to heat the radiating segment of the other end very soon by the heating section of Guan Yiduan; In view of the above; At least one superconducting pipe 31 extended buries underground in the geothermal source 40 of below ground, just can see through those superconducting pipes 31 heat of geothermal source is conducted to first heat exchanger, 32 places, so with in those heat transfer to the carbon dioxide circulation loop 20 as the heating sources that heat carbon dioxide.

This carbon dioxide circulation loop 20 final purposes system will heat carbon dioxide, add and be pressed into supercritical state, and the critical temperature of present known carbon dioxide is about 31.7 ℃ Celsius, and critical pressure then needs the 72.8atm barometric pressure; What this carbon dioxide circulation loop 20 started from liquid carbon dioxide provides source CO ₂This liquid carbon dioxide can be earlier through a compression pump P01 and through this first heat exchanger 32; This compression pump P01 sees through a pressure controller PIC1 makes the pressure of liquid carbon dioxide between pipeline, be maintained at critical pressure; The outlet section of first heat exchanger 32 is provided with a flow control valve CV1, sees through the flow velocity of a temperature controller TIC1 modulation liquid carbon dioxide between pipeline, receives the time of first heat exchanger, 32 effects with the control liquid carbon dioxide; Reach make liquid carbon dioxide temperature maintenance in the state of critical temperature, so liquid carbon dioxide has been threshold state at centrifugal compressor 11 inlet front ends; The CO 2 fluid meeting elder generation of threshold state is through centrifugal compressor 11 and then offer gas turbine 12 as driving medium, and between the pipeline of this centrifugal compressor 11 and gas turbine 12, other is provided with a three dimensional flow control valve CV2; Have the outlet of an end fluid input and two ends, therefore, other has an outlet loop to be access to the supply entrance of liquid carbon dioxide; See through the pressure between this section of pressure controller PIC2 control pipeline; When making underpressure, the enlargement discharge ratio, and during overpressure; Make the fluid of more ratio, reflux in first heat exchanger, 32 front ends; The temperature deficiency between the pipeline of this centrifugal compressor 11 and gas turbine 12, more is provided with one second heat exchanger 21, so will cooperate temperature controller TIC2 to be supplied by this second heat exchanger 21 between pipeline; Being supercritical carbon dioxide will rapid expansion be gas after getting into gas turbine 12; And then promotion gas turbine 12 runnings; And those gases will export the supply entrance that flow to liquid carbon dioxide through a gas compressor P02 compression and back by gas turbine 12 when the time comes, accomplish the circulation loop of carbon dioxide.

This Multi task motor 10 has the function of drive motor; Also can be used as simultaneously generator uses; In these Multi task motor 10 rotating shafts wherein an end link a centrifugal compressor 11 arranged, the other end then is provided with a gas turbine 12, therefore; Centrifugal compressor 11 and gas turbine 12 run-in synchronisms see through an energy switching unit 13 and switch the function that Multi task motor 10 is fit to according to the real-world operation condition; When Multi task motor 10 during with drive motor pattern active transport; The supercritical state carbon dioxide that centrifugal compressor 11 can drive in the carbon dioxide circulation loop 20 forms the pressure that is fit to promote gas turbine 12; When the outputting torsion of gas turbine 12 and rotating speed enough promote Multi task motor 10; This energy switching unit 13 just can switch to generator mode with this Multi task motor 10; And then reach the purpose of utilizing gas turbine 12 generatings, therefore, more comprise an energy control unit 14 in order to control Multi task motor 10 in the voltage distribution and the collection of drive motor pattern or generator mode.

The utility model can be found after implementing according to said structure, utilizes supercritical carbon dioxide as the driving medium that promote gas turbine in the structure, and this carbon dioxide is constantly to recycle in whole loop; See through superconducting pipe acquisition underground heat heat and get and be transformed into the required heat of supercritical state in the carbon dioxide circulation loop, therefore, the structure of utilizing natural steam to generate electricity in the known technology; The structure phase shape of the utility model is simple and pipeline inner wall card dirt can not be arranged and influence the disappearance of heat transfer efficiency; In addition, operation more can not produce other harmful matter, generally speaking; The utility model quite has the effect of environmental protection; And the whole system structure is simplified and really can be improved generating efficiency, certainly will significantly reduce the construction cost of underground heat power generating equipment, helps to improve the application of geothermal energy resources really.

Via above-mentioned explanation, the utility model utilizes superconducting pipe to absorb the supercritical carbon dioxide air turbine power generation system of underground heat, has reached preset purpose really, meets the demand of industry fully, and the whence proposes patent application in accordance with the law.

Claims

1. a supercritical carbon dioxide air turbine power generation system of utilizing superconducting pipe to absorb underground heat comprises a Multi task motor, a carbon dioxide circulation loop, reaches a underground heat heat pump, it is characterized in that:

This underground heat heat pump comprises at least one superconducting pipe member, and an end of those superconducting pipes extends to geothermal source, the other end then with the common framework of carbon dioxide circulation loop in one first heat exchanger;

This carbon dioxide circulation loop comprises the source that provides of a carbon dioxide; The source that provides of this carbon dioxide forms supercritical state through a compression pump and through this first heat exchanger earlier, and this compression pump sees through a pressure controller makes the pressure of carbon dioxide be maintained at critical pressure; The outlet section of this first heat exchanger is provided with a flow control valve, sees through the flow velocity of a temperature controller modulation carbon dioxide, with the temperature maintenance of control carbon dioxide in critical temperature;

This Multi task shaft of motor links respectively has a centrifugal compressor, and a gas turbine, sees through an energy switching unit switches the Multi task motor according to the real-world operation condition operating mode; More comprise an energy control unit, in order to control the Multi task motor in the voltage distribution and the collection of drive motor pattern or generator mode.