阅读说明：本技术 一种光热和地热耦合发电系统 (Photo-thermal and geothermal coupling power generation system ) 是由 张丹山 钟伟 于 2021-09-01 设计创作，主要内容包括：本发明公开了一种光热和地热耦合发电系统,包括地热预热系统,光热蒸发系统和ORC发电装置；所述ORC发电装置包括依次串联的预热器、蒸发器、透平膨胀机、冷凝器和第一工质泵,所述透平膨胀机用以驱动发电机运行；所述光热蒸发系统通过蒸发器与ORC发电装置内有机工质进行热量交换；所述地热预热系统通过预热器与ORC发电装置内有机工质进行热量交换；所述地热预热系统包括依次串联的地热出水井、岩屑过滤装置、抽水泵、加压泵和地热回灌井；所述预热器位于抽水泵和加压泵之间；所述岩屑过滤装置与岩屑换热装置连接,所述第一工质泵和所述预热器之间的工质管路与所述岩屑换热装置进行热量交换。本发明能够合理利用地热和光热资源进行发电。(The invention discloses a photo-thermal and geothermal coupling power generation system, which comprises a geothermal preheating system, a photo-thermal evaporation system and an ORC power generation device, wherein the photo-thermal evaporation system comprises a solar energy heat collector and a solar energy heat collector; the ORC power generation device comprises a preheater, an evaporator, a turbo expander, a condenser and a first working medium pump which are sequentially connected in series, wherein the turbo expander is used for driving a generator to operate; the photo-thermal evaporation system exchanges heat with organic working media in the ORC power generation device through the evaporator; the geothermal preheating system exchanges heat with an organic working medium in the ORC power generation device through a preheater; the geothermal preheating system comprises a geothermal water outlet well, a rock debris filtering device, a water suction pump, a pressure pump and a geothermal recharging well which are sequentially connected in series; the preheater is positioned between the water suction pump and the pressure pump; the rock debris filtering device is connected with the rock debris heat exchange device, and a working medium pipeline between the first working medium pump and the preheater exchanges heat with the rock debris heat exchange device. The invention can reasonably utilize geothermal and photo-thermal resources to generate electricity.)

1. The utility model provides a light and heat and geothermol power coupling power generation system which characterized in that: the system comprises a geothermal preheating system, a photothermal evaporation system and an ORC power generation device; the ORC power generation device comprises a preheater (1), an evaporator (2), a turbine expander (3), a condenser (5) and a first working medium pump (6) which are sequentially connected in series, wherein the turbine expander (3) is used for driving a generator (4) to operate; the photo-thermal evaporation system exchanges heat with organic working media in the ORC power generation device through the evaporator (2); the geothermal preheating system exchanges heat with organic working media in the ORC power generation device through a preheater (1);

the geothermal preheating system comprises a geothermal water outlet well (7), a rock debris filtering device (21), a water suction pump (22), a pressure pump (23) and a geothermal recharge well (8) which are sequentially connected in series; the preheater (1) is positioned between the water suction pump (22) and the pressure pump (23); the rock debris filtering device (21) is connected with the rock debris heat exchange device (24), and a working medium pipeline between the first working medium pump (6) and the preheater (1) is subjected to heat exchange with the rock debris heat exchange device (24).

2. A photothermal and geothermal coupled power generation system according to claim 1 wherein: the debris filtering device (21) comprises a vertically arranged filter cylinder (25), the section of an inner cavity of the filter cylinder (25) is square, the upper end of the filter cylinder (25) is provided with a water inlet, the lower end of the filter cylinder (25) is provided with a water outlet, and a filter screen (26) is arranged at the water outlet; two sides of the filter cylinder (25) are respectively provided with a chip leaking channel (27), the upper surface of the filter screen (26) is provided with a scraper (28), and the scraper (28) horizontally reciprocates under the driving of a first driving mechanism so as to scrape the rock chips blocked on the filter screen (26) into the chip leaking channels (27) on the two sides.

3. A photothermal and geothermal coupled power generation system according to claim 2 wherein: the rock debris heat exchange device (24) comprises a heat exchange cylinder (29) which is vertically arranged, a vertically through heat exchange channel (30) is arranged inside the heat exchange cylinder (29), and a working medium pipeline between the first working medium pump (6) and the preheater (1) correspondingly penetrates through the heat exchange channel (30); the wall of the heat exchange cylinder (29) is provided with two deposition channels (31), the upper ends of the two deposition channels (31) are respectively connected with the lower ends of the two chip leakage channels (27), and the lower ends of the two deposition channels (31) are respectively connected with the rock chip cleaning device.

4. A photothermal and geothermal coupled power generation system according to claim 3 wherein: the rock debris cleaning device comprises a bottom rotary table (32), the bottom rotary table (32) is driven by a second driving mechanism to vertically lift, and the bottom rotary table (32) is driven by a third driving mechanism to horizontally rotate; four chip storage boxes (33) with openings at the upper ends are arranged on the bottom turntable (32), and the upper openings of the chip storage boxes (33) are correspondingly and hermetically buckled with the lower end opening of the deposition channel (31); the lower end of the deposition channel (31) is also provided with an opening and closing gate (34) driven by a fourth driving mechanism.

5. A photothermal and geothermal coupled power generation system according to claim 2 wherein: the scraper (25) is in a shape of Chinese character 'ri', and the height of a connecting port of the chip leakage channel (27) and the filter cylinder (25) is equal to that of the scraper (25).

6. A photothermal and geothermal coupled power generation system according to claim 3 wherein: the two deposition channels (31) are in a spatial double-spiral structure in the wall of the heat exchange cylinder (29).

7. A photothermal and geothermal coupled power generation system according to claim 1 wherein: the photo-thermal evaporation system comprises a second working medium pump (9), a photo-thermal collector (10) and a heat storage device (11); a working medium outlet of the photo-thermal collector (10) is respectively connected with a working medium inlet of the heat storage device (11) and a working medium inlet of the evaporator (2), a working medium outlet of the heat storage device (11) is also connected with a working medium inlet of the evaporator (2), a working medium outlet of the evaporator (2) is connected with a working medium inlet of a second working medium pump (9), and a working medium outlet of the second working medium pump (9) is respectively connected with the working medium inlets of the heat storage device (11) and the photo-thermal collector (10);

the working medium export of light and heat collector (10) with be provided with first governing valve (16) between the working medium import of heat-retaining device (11), the working medium export of light and heat collector (10) with be provided with second governing valve (17) between the working medium import of evaporimeter (2), the working medium export of heat-retaining device (11) with be provided with third stop valve (18) between the working medium import of evaporimeter (2), the working medium export of second working medium pump (9) with be provided with second stop valve (15) between the working medium import of heat-retaining device (11), the working medium export of second working medium pump (9) with be provided with first stop valve (14) between the working medium import of light and heat collector (10).

8. A photothermal and geothermal coupled power generation system according to claim 7 wherein: and an expansion tank (19) is connected on the working medium pipeline between the evaporator (2) and the second working medium pump (9).

9. A photothermal and geothermal coupled power generation system according to claim 1 wherein: a turbine valve (12) is arranged between the working medium outlet of the evaporator (2) and the working medium inlet of the turboexpander (3), and a turbine bypass valve (13) is arranged between the working medium outlet of the evaporator (2) and the working medium outlet of the turboexpander (3).

10. A photothermal and geothermal coupled power generation system according to claim 1 wherein: a heat regenerator (20) is further arranged in the ORC power generation device, and working media in the ORC power generation device sequentially pass through the heat regenerator (20), the condenser (5) and the first working medium pump (6), then return to the heat regenerator (20) and enter the preheater (1).

Technical Field

The invention relates to the technical field of power generation, in particular to a photo-thermal and geothermal coupling power generation system.

Background

Geothermal energy is a new clean energy, and under the condition that the environmental awareness of people is gradually enhanced and the energy is gradually lacking, the reasonable development and utilization of geothermal resources are more and more favored by people. Wherein the geothermal energy stored within 2000 meters from the ground surface is 2500 hundred million tons of standard coal. Nationwide geothermal energy is available in quantities of 68 billion cubic meters per year, containing 973 trillion kilojoules of geothermal energy. On the scale of geothermal heating utilization, China always stays at the first position of the world in recent years and steadily increases at the speed of nearly 10% every year. In the field of geothermal power generation, high-temperature geothermal resources in China are mainly concentrated in southwest regions such as Yunnan of Tibet, and the high-temperature geothermal resources in the middle and east are few, so that the development of the field of geothermal power generation in China is restricted.

Solar energy is energy generated by a continuous nuclear fusion reaction process of black seeds in or on the surface of the sun. The average solar radiation intensity on the earth orbit is 1369 w/square meter. The circumference of the earth's equator is 40000km, so that it can be calculated that the energy acquired by the earth can reach 173000 TW. The standard peak intensity at sea level is 1kw/m2, the annual average radiation intensity at one point on the earth's surface for 24 hours is 0.20 kw/square meter, corresponding to 102000TW of energy.

The organic Rankine cycle power generation device can obtain higher vapor pressure under the low temperature condition (80-300 ℃) by utilizing the low boiling point characteristic of organic working media (such as R134a, R245fa and the like), push an expansion machine to work, and drive a generator to generate power, so that the conversion from low-grade heat energy to high-grade electric energy is realized.

Solar energy is greatly influenced by climate and day and night, and the power generation is extremely inconstant. Therefore, energy storage devices must be provided, which not only increases the technical difficulties but also increases the cost. Although various battery energy storage systems are manufactured at present, the manufacturing cost is high, and the battery treatment brings the problem of environmental pollution.

The temperature of geothermal resources in the eastern region of China is low, and the problem of low geothermal power generation efficiency exists.

In order to solve the technical problem, the invention provides a photo-thermal and geothermal coupling power generation system.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a photo-thermal and geothermal coupling power generation system which can reasonably utilize geothermal and photo-thermal resources to generate power.

The technical scheme is as follows: in order to achieve the purpose, the photo-thermal and geothermal coupling power generation system comprises a geothermal preheating system, a photo-thermal evaporation system and an ORC power generation device; the ORC power generation device comprises a preheater, an evaporator, a turbo expander, a condenser and a first working medium pump which are sequentially connected in series, wherein the turbo expander is used for driving a generator to operate; the photo-thermal evaporation system exchanges heat with organic working media in the ORC power generation device through the evaporator; the geothermal preheating system exchanges heat with an organic working medium in the ORC power generation device through a preheater; the geothermal preheating system comprises a geothermal water outlet well, a rock debris filtering device, a water suction pump, a pressure pump and a geothermal recharging well which are sequentially connected in series; the preheater is positioned between the water suction pump and the pressure pump; the rock debris filtering device is connected with the rock debris heat exchange device, and a working medium pipeline between the first working medium pump and the preheater exchanges heat with the rock debris heat exchange device.

Further, the rock debris filtering device comprises a vertically arranged filter cylinder, the cross section of an inner cavity of the filter cylinder is square, the upper end of the filter cylinder is a water inlet, the lower end of the filter cylinder is a water outlet, and a filter screen is arranged at the water outlet; the two sides of the filter cartridge are respectively provided with a chip leaking channel, the upper surface of the filter screen is provided with a scraper, and the scraper horizontally reciprocates under the driving of the first driving mechanism so as to scrape the rock chips blocked on the filter screen into the chip leaking channels on the two sides.

Furthermore, the rock debris heat exchange device comprises a vertically arranged heat exchange cylinder, a vertically through heat exchange channel is arranged inside the heat exchange cylinder, and a working medium pipeline between the first working medium pump and the preheater correspondingly penetrates through the heat exchange channel; the wall of the heat exchange tube is provided with two deposition channels, the upper ends of the two deposition channels are respectively connected with the lower ends of the two chip leakage channels, and the lower ends of the two deposition channels are respectively connected with the rock chip cleaning device.

Further, the rock debris cleaning device comprises a bottom rotary table, the bottom rotary table is driven by a second driving mechanism to vertically lift, and the bottom rotary table is driven by a third driving mechanism to horizontally rotate; four chip storage boxes with openings at the upper ends are arranged on the bottom turntable, and the upper openings of the chip storage boxes are correspondingly and hermetically buckled with the lower end opening of the deposition channel; the lower end of the deposition channel is also provided with an opening and closing gate driven by a fourth driving mechanism.

Furthermore, the scraper blade is "day" style of calligraphy, the high equal with the height of scraper blade of the connecting port of hourglass bits passageway with the cartridge filter.

Furthermore, the two deposition channels are in a spatial double-spiral structure in the wall of the heat exchange cylinder.

Further, the photo-thermal evaporation system comprises a second working medium pump, a photo-thermal collector and a heat storage device; the working medium outlet of the photo-thermal collector is respectively connected with the working medium inlets of the heat storage device and the evaporator, the working medium outlet of the heat storage device is also connected with the working medium inlet of the evaporator, the working medium outlet of the evaporator is connected with the working medium inlet of the second working medium pump, and the working medium outlet of the second working medium pump is respectively connected with the working medium inlets of the heat storage device and the photo-thermal collector; the working medium outlet of the photo-thermal heat collector and the working medium inlet of the heat storage device are provided with a first regulating valve, the working medium outlet of the photo-thermal heat collector and a second regulating valve are arranged between the working medium inlets of the evaporators, the working medium outlet of the heat storage device and a third stop valve are arranged between the working medium inlets of the evaporators, the working medium outlet of the second working medium pump and a second stop valve are arranged between the working medium inlets of the heat storage device, and the working medium outlet of the second working medium pump and the working medium inlet of the photo-thermal heat collector are provided with a first stop valve.

Furthermore, an expansion tank is connected to a working medium pipeline between the evaporator and the second working medium pump.

Furthermore, a turbine valve is arranged between the working medium outlet of the evaporator and the working medium inlet of the turboexpander, and a turbine bypass valve is arranged between the working medium outlet of the evaporator and the working medium outlet of the turboexpander.

Furthermore, a heat regenerator is further arranged in the ORC power generation device, and working media in the ORC power generation device sequentially pass through the heat regenerator, the condenser and the first working medium pump, then return to the heat regenerator and enter the preheater.

Has the advantages that: the photo-thermal and geothermal coupling power generation system has the following beneficial effects:

1) the geothermal preheating system and the preheater in the ORC power generation device exchange heat, and the photothermal evaporation system and the evaporator in the ORC power generation device exchange heat, so that photothermal and geothermal coupled power generation is realized, and the economic benefit is high;

2) the geothermal preheating system is internally provided with the rock debris filtering device which can filter rock debris in underground hot water, so that the rock debris is prevented from blocking or corroding a pipeline, and the service life of the pipeline is prolonged; the rock debris filtering device has good filtering effect and can effectively deal with underground water containing more rock debris;

3) filterable detritus can get into in the detritus heat transfer device in the detritus filter equipment, and the working medium pipeline in the ORC power generation facility carries out heat exchange with detritus heat transfer device, can recycle the heat that has in the detritus to the utilization ratio of increase energy.

Drawings

FIG. 1 is a system wiring diagram of the present invention;

FIG. 2 is a schematic diagram of a system with a regenerator;

FIG. 3 is a schematic plan view of a filter cartridge and a heat exchange cartridge;

FIG. 4 is a schematic view of the squeegee configuration;

FIG. 5 is a schematic structural view of a deposition channel;

FIG. 6 is a schematic structural diagram of the rock debris cleaning device.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

A photothermal and geothermal coupled power generation system as described in figures 1 to 6 comprising a geothermal preheating system, a photothermal evaporation system and an ORC power plant.

The ORC power generation device comprises a preheater 1, an evaporator 2, a turbine expander 3, a condenser 5 and a first working medium pump 6 which are sequentially connected in series, wherein the turbine expander 3 is used for driving a generator 4 to operate.

And the photo-thermal evaporation system exchanges heat with the organic working medium in the ORC power generation device through the evaporator 2.

And the geothermal preheating system exchanges heat with the organic working medium in the ORC power generation device through the preheater 1.

The geothermal preheating system comprises a geothermal water outlet well 7, a rock debris filtering device 21, a water suction pump 22, a pressure pump 23 and a geothermal recharging well 8 which are sequentially connected in series, wherein the pressure pump 23 can increase recharging pressure. The preheater 1 is located between the suction pump 22 and the booster pump 23. The rock debris filtering device 21 is connected with the rock debris heat exchange device 24, the rock debris filtered in the rock debris filtering device 21 enters the rock debris heat exchange device 24, the first working medium pump 6 and the working medium pipeline between the preheaters 1 are in heat exchange with the rock debris heat exchange device 24, and the heat contained in the rock debris is recycled.

As shown in fig. 3, the rock debris filtering device 21 includes a vertically arranged filter cartridge 25, the cross section of the inner cavity of the filter cartridge 25 is square, the upper end of the filter cartridge 25 is a water inlet, the lower end of the filter cartridge 25 is a water outlet and a filter screen 26 is arranged at the water outlet, and the filter screen 26 is used for blocking rock debris. Chip leakage channels 27 are respectively arranged on two sides of the filter cylinder 25, and connecting ports of the chip leakage channels 27 and the filter cylinder 25 are respectively positioned on two sides above the filter screen 26. The upper surface of filter screen 26 is provided with scraper blade 28, the lower extreme of scraper blade 28 with the upper surface of filter screen 216 laminates mutually, scraper blade 28 horizontal reciprocating motion under first actuating mechanism's the drive to avoid the detritus to pile up on the surface of filter screen 26 in the hourglass bits passageway 27 of both sides is scraped into to the detritus that will be blockked on filter screen 26.

As shown in fig. 3 and 5, the rock debris heat exchange device 24 includes a vertically arranged heat exchange cylinder 29, the heat exchange cylinder 29 is hollow, a vertically through heat exchange channel 30 is arranged inside the heat exchange cylinder 29, and a working medium pipeline between the first working medium pump 6 and the preheater 1 correspondingly penetrates through the heat exchange channel 30. The wall of the heat exchange cylinder 29 is provided with two deposition channels 31, the upper ends of the two deposition channels 31 are respectively connected with the lower ends of the two chip leakage channels 27, and the lower ends of the two deposition channels 31 are respectively connected with the rock chip cleaning device. The rock debris and the working medium pipeline in the heat exchange channel 31 exchange heat in the process of sinking from the deposition channel 31, so that the heat in the rock debris is recycled.

As shown in fig. 6, the rock debris cleaning device includes a bottom rotary table 32, the bottom rotary table 32 is vertically lifted and lowered under the driving of a second driving mechanism, the second driving mechanism may be a hydraulic cylinder, the bottom rotary table 32 is horizontally rotated under the driving of a third driving mechanism, and the third driving mechanism may be a motor. Four chip storage boxes 33 with upper end openings are arranged on the bottom turntable 32 in an annular equal-angle mode, and the upper openings of the chip storage boxes 33 are correspondingly and hermetically fastened with the lower end openings of the deposition channels 31. The lower end of the deposition passage 31 is also provided with an opening/closing shutter 34 driven by a fourth driving mechanism. Piling up in storing up bits box 33 from the sedimentary rock debris that deposit passageway 31 sinks, when the accumulational rock debris in needs clearance storing up bits box 33, closing switching gate 34, second actuating mechanism drive bottom carousel 32 moves down, makes storing up bits box 33 and sedimentary passageway 31 alternate segregation, and third actuating mechanism drives bottom carousel 32 and rotates afterwards, because be provided with four storing up bits boxes 33 on the carousel 32 of bottom, consequently can make two idle storing up bits boxes 33 and two storing up bits boxes 33 exchange positions that are equipped with the rock debris, drive two idle storing up bits boxes 33 downstream by second actuating mechanism again and deposit the sealed lock joint of the lower extreme opening of passageway 31, two storing up bits boxes 33 that are equipped with the rock debris then can clear up.

As shown in fig. 4, the scraper 25 is in a shape like a Chinese character 'ri', the height and width of the connection port of the debris leakage channel 27 and the filter cylinder 25 are equal to those of the scraper 25, and the scraper 25 can close the connection port of the debris leakage channel 27 and the filter cylinder 25 during the transverse movement process, so that the movement of water flow in the filter cylinder 25 can not cause the overturning of debris in the debris leakage channel 27 and the sedimentation channel 31, and the debris can be better fallen and sedimented.

Two the deposit passageway 31 is in be space double helix structure in the section of thick bamboo wall of heat exchange tube 29, two deposit passageways 31 mutually support, and is effectual to the encirclement of heat transfer passageway 30, improves the heat transfer effect, and the deposit passageway 31 of space spiral structure also can slow down the deposition rate of detritus, makes the heat that carries in the detritus can be by the make full use of by the absorption.

The photo-thermal evaporation system comprises a second working medium pump 9, a photo-thermal heat collector 10 and a heat storage device 11. The heat storage device 11 of the photo-thermal evaporation system can enable heat collected by the photo-thermal heat collector 10 to continuously heat the evaporator 2, so that the system generates stable power, and the discontinuity of photo-thermal power generation is effectively avoided.

The working medium outlet of the photo-thermal heat collector 10 is respectively connected with the working medium inlets of the heat storage device 11 and the evaporator 2, the working medium outlet of the heat storage device 11 is also connected with the working medium inlet of the evaporator 2, the working medium outlet of the evaporator 2 is connected with the working medium inlet of the second working medium pump 9, and the working medium outlet of the second working medium pump 9 is respectively connected with the working medium inlets of the heat storage device 11 and the photo-thermal heat collector 10.

The working medium outlet of the photo-thermal heat collector 10 and the working medium inlet of the heat storage device 11 are provided with a first regulating valve 16, the working medium outlet of the photo-thermal heat collector 10 and a second regulating valve 17 are arranged between the working medium inlets of the evaporator 2, the working medium outlet of the heat storage device 11 and a third stop valve 18 are arranged between the working medium inlets of the evaporator 2, the working medium outlet of the second working medium pump 9 and a second stop valve 15 are arranged between the working medium inlets of the heat storage device 11, and the working medium outlet of the second working medium pump 9 and a first stop valve 14 is arranged between the working medium inlets of the photo-thermal heat collector 10. The flow of the circulating working medium is distributed by utilizing the regulating valve, so that the heat storage device 11 stores enough heat to meet the condition of insufficient light and heat caused by night or climate.

The circulating working medium of the photo-thermal evaporation system is heat conduction oil or water, the heat conduction oil is adopted when the heat collection temperature of the photo-thermal collector 10 is higher than 150 ℃, and the water is adopted when the heat collection temperature is lower than 150 ℃. When the heat storage device 11 stores heat, the first stop valve 14 and the third stop valve 18 are opened, the second stop valve 15 is closed, and after the circulating working medium absorbs heat at the photo-thermal heat collector 10, the circulating working medium enters the evaporator 2 and the heat storage device 11 through the first regulating valve 16 and the second regulating valve 17 respectively and then enters the second working medium pump 9 to complete a cycle. When the heat storage device 11 releases heat, the first stop valve 14, the first regulating valve 16 and the second regulating valve 17 are closed, the second stop valve 15 and the third stop valve 18 are opened, the circulating working medium absorbs the heat released by the heat storage device 11, the heat is brought to the evaporator 2 and then enters the second working medium pump 9, and a cycle is completed.

And a working medium pipeline between the evaporator 2 and the second working medium pump 9 is connected with an expansion tank 19, and the expansion tank 19 is mainly used for maintaining the pressure stability of pipelines and equipment in the photo-thermal evaporation system, so that the pressure mutation in the system caused by the volume expansion due to temperature change is prevented.

A turbine valve 12 is arranged between the working medium outlet of the evaporator 2 and the working medium inlet of the turboexpander 3, and a turbine bypass valve 13 is arranged between the working medium outlet of the evaporator 2 and the working medium outlet of the turboexpander 3.

The ORC power generation device is also provided with a heat regenerator 20, and working media in the ORC power generation device sequentially pass through the heat regenerator 20, the condenser 5 and the first working medium pump 6, then return to the heat regenerator 20 and enter the preheater 1.

The on-off of the turbine valve 12 and the turbine bypass valve 13 in the ORC power generation device can realize the switching of the bypass and the turbine power generation modes of the organic Rankine cycle power generation device. The working medium of the ORC power generation device absorbs heat of terrestrial heat and photo-thermal from the preheater 1 and the evaporator 2, enters the turbine expander 3 through the turbine valve 12, and the turbine expander 3 drives the generator to complete a power generation mode. The working medium sequentially enters the heat regenerator 20, the condenser 5 and the working medium pump 6, passes through the heat regenerator 20 again, passes through the rock debris heat exchange device 24 and enters the preheater 1, and the working medium circulation of the ORC power generation device in a power generation mode is completed. The working medium of the ORC power generation device absorbs heat of terrestrial heat and photothermal from the preheater 1 and the evaporator 2, passes through the turbine bypass valve 13, is subjected to throttling expansion, sequentially enters the heat regenerator 20, the condenser 5 and the working medium pump 6, passes through the rock debris heat exchange device 24 again after passing through the heat regenerator 20 and enters the preheater 1, and the working medium circulation of the turbine mode of the ORC power generation device is completed. The condenser 5 in the ORC power plant may employ a water-cooled, air-cooled, or evaporative-cooled condensing heat exchanger.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.