CN101892964B - Cycling hot-dry-rock generating method and device by using gravity vacuum auxiliary heat pipe in myriameter single-deep-well - Google Patents
Cycling hot-dry-rock generating method and device by using gravity vacuum auxiliary heat pipe in myriameter single-deep-well Download PDFInfo
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Abstract
The invention relates to a cycling hot-dry-rock generating method and a cycling hot-dry-rock generating device by using a gravity vacuum auxiliary heat pipe in a myriameter single-deep-well. The method comprises the following steps: a heat-absorbing evaporator absorbs high temperature heat below myriameter under ground; high pressure steam is generated after medium in the heat is evaporated, rises to the ground at high speed along a main heat-transfer steam pipe with heat wave wrapping in an auxiliary gravity heat pipe, and drives a steam turbine to generate electricity; after generation, condensed liquid is pumped to a return pipe to form a gravity liquid column which enters the heat-absorbing evaporator to absorb heat for secondary cycling; and the high temperature heat in the underground rock slurry can be converted into high pressure steam in cycles so as to drive the steam turbine to drive the generator to generate electricity. The main heat-transfer steam pipe has less heat loss and high power in myriameter heat-transfer process, and opens a novel technical way for utilizing green environment-friendly geothermal resources.
Description
Technical field: what the present invention relates to is that the huge heat resource in xeothermic rock slurry is contained in more than 30,000 meter depths under the face of land; Through single deep-well heavy caliber gravity vacuum heat pipe Circulation pipe the high temperature heat (geothermal power) of the thousands of degree of underground HQ high grade is passed to method and the device that utilizes again on the ground at a distance, what be specifically related to is single deep-well gravity vacuum auxiliary heat pipe circulation hot dry rock electricity-generating method of myriametre and device.
Background technique: more than 30,000 meter the degree of depth exists with thousands of degree high temperature forms under the earth face of land; Mainly be to contain among the rock slurry; And this high temperature heat mainly is constantly to decay apart from ground more than 6300 kilometer more than 6000 degree atomic nucleus from earth central part, and the thermonuclear reaction that is taken place passes the unlimited low temperature environment (according to thermodynamic theories, heat can only be conducted to cold direction) of negative more than 270 degree among the face of land is distributed to atmospheric layer space universe through the form of conduction, convection current, radiation; The temperature difference is big more; The energy of conversion and merit are just many more, and geothermal power generation also is like this, and well is dark more; The temperature value that is obtained is just big more; How utilizing this natural huge inexhaustible heat resource is exactly method and apparatus of the present invention, answer this and have revolutionary technical problem, just needs to understand the existing in prior technology drawback and have practical application property why not.Existing underground heat comprises that the hot dry rock technology is mainly reflected in the following aspects, the one, and hot spring and gas spring that the intrinsic fracture that can only utilize nature to exist is extruded are because of the rare narrow limitation of the short heating power resource distribution of the length of service; The 2nd, the latent well casing bore of geothermal well well depth is little, and the low underground heat temperature grade of heat flux ability is low, and economic value is low, is confined to the application area of energy-conservation link; The 3rd, existing xeothermic rock geothermal power generation technology is confined to 2000～6000 meters rock stratum scopes, layer inner segment be low in the thermosphere of warm grade, what take mostly is the water filling twin-well circuit method of drawing water; Fund input is big, and heat-energy losses is big, and acting is exerted oneself few; There is not economic promotional value; This deep-well geothermal power generation plant and method have been summed up the method that twin-well circulation or the water filling of horizontal well hot dry rock generation technology are drawn water, just though the test of test well is arranged; But all can run into high-temperature water fouling, percentage of water loss height, the short problem of the length of service, and can not promote and use so far; The 4th, because existing drilling technology drilling cost is high; Drilling depth has narrow limitation; Restricted and obtained 500～1500 ℃ of perhaps realizations of HQ high grade heat energy more than 1500 ℃ of the ultra myriametre degree of depth; Just, numerous innovation idea and method are hung back because of the drilling technology that obtains this underground high temperature heat does not also occur.Method provided by the invention; The remote method of transmitting underground thousands of temperature hot dry rock slurry heat energy of the ultra myriametre of creationary proposition; Its novelty is to solve the method that vacuumizes heat transfer thermal insulation and auxiliary companion's heat of utilizing; Can significantly reduce the problem of heat-energy losses in the transferring heat energy process; Its practicability is mainly reflected in no external impetus and only leans on individual well self thermodynamic cycle, has reduced input cost, makes the technological method of this invention and device have the value of practical application property widely and popularization; On this basis the inventor to have invented simultaneously with the HTHP air be that circulatory mediator transmits method and the technical equipment that kinetic energy and heat energy sprays broken rock the drilling well bore can be reached more than 1000 millimeters; Can be rated as the revolution of a drilling technology, he will be with the mode of no drilling rod, no drill bit, and drilling depth can reach more than 30,000 meter drilling technology will be presented in people at the moment; Establish technical support for developing in the hot dry rock slurry below the deep Earth myriametre the huge HQ high grade heat resource of thousands of degree energetically, energy resource structure exploitation for a change, utilized environmental type sustainable (underground heat) resource to open up new technological road.
Summary of the invention: the purpose of this invention is to provide the single deep-well gravity vacuum of a kind of myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method; The method has overcome the conventional waterflooding twin-well circuit method of drawing water; Fund input is big; Heat-energy losses is big, and the few problem of exerting oneself of doing work, another object of the present invention provide the device that the single deep-well gravity vacuum of myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method uses.
The technical solution adopted for the present invention to solve the technical problems is: the single deep-well gravity vacuum of this myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method, and the heat absorption vaporizer absorbs between 500-1500 ℃ below the underground myriametre or the high temperature heat more than 1500 ℃, and medium evaporation back produces high pressure steam in it; High pressure steam rises to ground at a high speed along under the holding of main heat transfer steam tube heat wave in the assisted gravity heat pipe, promotes steam turbine acting generating; After the generating; Gas is condensed, and condensed liquid pumps into liquid return pipe through pump; Under liquid base valve in liquid return pipe cooperates; Forming absorbs heat in the gravity fluid column entering heat absorption vaporizer carries out secondary cycle, goes round and begins again and changes the high temperature heat of containing in the subsurface rock slurry into high pressure steam, promotes steam turbine and drives generator for electricity generation.
The device that the single deep-well gravity vacuum of a kind of myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method uses; Its heat absorption vaporizer is installed in the bottom of the geothermal well of depth myriametre; Main heat transfer steam tube one end connects the heat absorption vaporizer, and an end connects steam turbine, and steam turbine connects generator; Steam turbine also connects cooler through outlet pipe; The liquid return pipe that is connected with cooler inserts downwards in the heat absorption vaporizer, and recycle pump is installed on the liquid return pipe, and the position that liquid return pipe inserts in the heat absorption vaporizer is equipped with one-way valve; Main heat transfer steam tube has vacuum heat-preserving tube outward; Main heat transfer steam tube is positioned at the part of geothermal well; Also has the assisted gravity heat pipe between itself and the vacuum heat-preserving tube; The assisted gravity heat pipe is a vacuum, and the endotherm section of its lower end deeply absorbs heat in the vaporizer or is looped around outside the heat absorption vaporizer, and evaporative medium is housed in it.
On the main heat transfer steam tube in the such scheme surge tank being installed, specifically is that surge tank is installed on the main heat transfer steam tube between ground and the steam turbine.
The single deep-well gravity vacuum of a kind of myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method; The heat absorption vaporizer absorbs between 500-1500 ℃ below the underground myriametre or the high temperature heat more than 1500 ℃; After medium evaporates in it; Latent heat steam is carrying high temperature heat and is ordering about effect down at the negative pressure of vacuum environment, the main heat transfer steam tube under the holding of heat wave in the assisted gravity heat pipe, and high speed rushes at multitube and encircles radiator more; Encircle the radiator wall through multitube passes to the steam latent heat of vaporization in the cryogenic liquide working medium or water in the heat accumulation energy storage tank more; Steam is met the cold liquid that becomes after the radiator heat release, and liquid flows back into again under the effect of gravity and carries out secondary heat absorption, evaporation recirculation in the heat absorption vaporizer; The high speed of going round and beginning again circulation continuously passes to underground high temperature heat in the heat accumulation energy storage tank in low boiling working fluid or the water; Liquid working substance after through heat exchange in the heat accumulation energy storage tank or water begin to form a large amount of steam when exceeding boiling point, can constantly assemble high pressure steam at 1/4 place, jar middle and upper part, and this high pressure steam promotes steam turbine drive generator for electricity generation that turns round; The cooling of dispelling the heat of gas after the acting, condensed liquid working substance or water are pressed into through recycle pump and carry out recirculation in the heat accumulation energy storage tank.
The device that the single deep-well gravity vacuum of above-mentioned myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method uses, its heat absorption vaporizer is installed in the bottom of the geothermal well of depth myriametre, and main heat transfer steam tube one end connects the heat absorption vaporizer; One end connects radiator; Radiator inserts in the ground heat accumulation energy storage tank, and the heat accumulation energy storage tank connects steam turbine, and steam turbine connects generator; Steam turbine also connects cooler through outlet pipe, and the liquid return pipe that is connected with cooler is connected to the heat accumulation energy storage tank; Main heat transfer steam tube has vacuum heat-preserving tube outward; Main heat transfer steam tube is positioned at the part of geothermal well; Also has the assisted gravity heat pipe between itself and the vacuum heat-preserving tube; The assisted gravity heat pipe is a vacuum, and the endotherm section of its lower end deeply absorbs heat in the vaporizer or is looped around outside the heat absorption vaporizer, and evaporative medium is housed in it.
Evaporative medium or water in the such scheme in the heat absorption vaporizer are about the 15%-20% of gravity assisted heat pipe confined space environment;, main heat transfer steam tube or assisted gravity heat pipe more above-mentioned working medium or water are injected wherein after vacuumizing; The heat absorption vaporizer be diameter between 200 millimeters to 500 millimeters or more than 500 millimeters, length is between 500 meters to 1000 meters or at the huge large size thermal-arrest heat absorption coverter more than 1000 meters; Be perpendicular to the face of land, concrete diameter and length definite decide according to the heat energy demand.
The thermal insulation material is arranged between vacuum heat-preserving tube in the such scheme and the geothermal well.
Filling heat-conductive packing between heat absorption vaporizer and the geothermal well in the such scheme, the hot transfer efficiency of the vaporizer wall of can guaranteeing like this to absorb heat.
Heat accumulation energy storage tank vapor (steam) temperature is controlled between 250-500 ℃ in the such scheme, and the area design of cooler is for absorbing heat evaporator area more than 10 times, and the area of heat accumulation energy storage tank also is designed to absorb heat evaporator area more than 10 times.
The assisted gravity heat pipe is made up of endotherm section, heat transfer segment, heat release section in the such scheme, vaporizer 1/3rd places of deeply absorbing heat, its lower end, and the evaporative medium in it is about the 15%-20% of its confined space environment.
Beneficial effect:
1, the main heat transfer steam tube of the present invention is in the diabatic process of last myriametre; What at first want customer service is that the earth's core is to its formed gravitation; Thermodynamic loss besides; The assisted gravity heat pipe makes its additional process that is accompanied by thermal energy all the time in order to overcome the unfavorable factor in the above-mentioned main heat transfer steam tube transmittance process, makes pressure, temperature, speed trend towards promoting in the positive compression swelling equilibrium state scope purpose that steam turbine reaches effective acting generating again; The present invention simultaneously need not external impetus and only leans on individual well self thermodynamic cycle, has reduced input cost, makes the technological method of this invention and device have practical application widely and promotional value.
2, under this conceptual design of the present invention and method guidance; On 6300 meters deep-wells of ancient this mouthful of Long1Jing of Daqing oil field, realize (257 ℃ of bottom hole temperature (BHT)s) scale design at present; 5500kw invests 2,000 ten thousand yuan; It provides a technical practicability data and experience for 1,000,000 grades of multikilowatt underground heat of myriametre hot dry rock generation technology, and reliable assurance is provided.At present, the present invention is in the experiment of maintaining secrecy, and experiment is carried out just steadily.
3, the assisted gravity heat pipe is looped around between vacuum heat-preserving tube and the main heat transfer steam tube among the present invention; The one, intercepted low-temperature receiver and slipped into; Prevent that its conduction convection current from taking place; The 2nd, the latent heat steam that main heat transfer steam tube high speed is being flowed carries out secondary heating more continuously, guarantees that HTHP heat energy latent heat gas rushes at steam turbine at a high speed and multitube encircles radiator more.
Description of drawings:
Fig. 1 is the apparatus structure schematic representation of the embodiment of the invention 1;
Fig. 2 is a bottom partial enlarged drawing among Fig. 1;
Fig. 3 is the apparatus structure schematic representation of the embodiment of the invention 2;
Fig. 4 is a bottom partial enlarged drawing among Fig. 3;
Fig. 5 is an assisted gravity heat pipe fundamental diagram.
1 heat absorption vaporizer, 2 main heat transfer steam tubes, 3 radiators, 4 geothermal wells, 5 heat accumulation energy storage tanks, 6 vacuum heat-preserving tubes, 7 liquid return pipes, 8 one-way valves, 9 assisted gravity heat pipes, 10 heat-conducting fillers, 11 outlet pipes, 12 thermal insulation materials, 13 steam turbines, 14 generators, 15 heat radiation towers, 16 coolers, 17 one-way valves, 18 recycle pumps, 19 evaporative mediums or water, 20 surge tanks, 21 vacuum pumping valve groups, 22 vacuum heat-insulating layers
Embodiment:
In conjunction with accompanying drawing the present invention is further specified:
Embodiment 1:
The single deep-well gravity vacuum of this myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method; Between 500-1500 ℃ below the underground myriametre of heat absorption vaporizer 1 absorption or after the high temperature heat more than 1500 ℃, produce high pressure steam after the medium evaporation in it, high pressure steam is along under the holding of main heat transfer steam tube 2 heat wave in assisted gravity heat pipe 9; Rise to ground at a high speed; Promote ground steam turbine 13 and drive generator 14 generatings, after the generating, gas gets into heat radiation tower 15; Here hot gas becomes liquid after cooler 16 heat radiations; Certain cooler 16 also can directly be put into rivers,lakes and seas and dispel the heat, and condensed liquid pumps into liquid return pipe 7 through recycle pump 18; Liquid in liquid return pipe 7 under base valve 8 cooperates; Long term distance forms the gravity fluid column and gets in the heat absorption vaporizer 1 heat absorption and carry out secondary cycle, and going round and beginning again does not need other extra powers to accomplish thermal energy transfer, will contain in the subsurface rock slurry from huge inexhaustible concerning the mankind in earth middle part to pick moving steam turbine 13 and drive generators 14 and provide the energy of sustainable clean cleaning, cheap electric energy.
The present invention is in order to overcome centrifugal force and thermodynamic loss; Adopt the remote tracing thermal-insulating method of the main heat transfer steam tube 2 outer assisted gravity heat pipes 9 that are nested with; Make main heat transfer steam tube 2 be accompanied by replenishing of thermal energy all the time, protect the high pressure steam in the main heat transfer steam tube 2 to realize the remote steam turbine 13 acting generatings that transmit and promote.
Fig. 1 is the apparatus structure schematic representation of the embodiment of the invention 1; In conjunction with shown in Figure 2; The device that the single deep-well gravity vacuum of this myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method uses; Its heat absorption vaporizer 1 is installed in the bottom of the geothermal well 4 of depth myriametre, is full of evaporative medium or water 19 in the heat absorption vaporizer 1, and evaporative medium or water in the heat absorption vaporizer 1 are about the 11%-20% of heat pipe confined space environment; Fill heat-conducting filler 10 between heat absorption vaporizer 1 and the geothermal well 4, evaporative medium is a low boiling point working medium; Main heat transfer steam tube 2 one ends connect heat absorption vaporizer 1, one end and connect steam turbine 13, and main heat transfer steam tube 2 is passages that the heat absorption vaporizer 1 interior high pressure steam that produces rushes at steam turbine 13 at a high speed; In order to be incubated or to provide auxiliary companion's heat, guarantee still can accomplish the generating task when high pressure steam moves to ground at a distance, outside the main heat transfer steam tube 2 vacuum heat-preserving tube 6 is arranged; Main heat transfer steam tube 2 is positioned at the part of geothermal well 4; Also have assisted gravity heat pipe 9 between itself and the vacuum heat-preserving tube 6, they are to go up myriametre at a distance, and assisted gravity heat pipe 9 is vacuum; Vaporizer 1/1st three place of deeply absorbing heat, lower end; Get final product in the scope of top to the face of land, evaporative medium is housed in it, on the vacuum heat-preserving tube 6 vacuum pumping valve is arranged; Evaporative medium in the assisted gravity heat pipe 9 is about the 15%-20% of its confined space environment; Assisted gravity heat pipe 9 will be led heat transfer steam tube 2 and surround wherein, and the evaporative medium in it absorbs the high-temperature steam that geothermal power produces, and the part of main heat transfer steam tube 2 in geothermal well 4 is dipped in the hot environment; Steam turbine 13 connects generator 14; Steam turbine 13 also connects cooler 16 through outlet pipe 11; The liquid return pipe 7 that is connected with cooler 16 inserts downwards in the heat absorption vaporizer 1, and recycle pump 18 and one-way valve 17 are installed on the liquid return pipe 7, and the end that liquid return pipe 7 inserts heat absorption vaporizer 1 also is equipped with one-way valve 8; This one-way valve 8 can guarantee cooled flow of liquid resorption hot vaporizer 1; And the liquid in the heat absorption vaporizer 1 can not flow in the liquid return pipe 7, and recycle pump 18 is returned cooled liquid in the heat absorption vaporizer 1, and surge tank 20 is installed on the main heat transfer steam tube 2 between ground and the steam turbine 13.The high-temperature steam that heat absorption vaporizer 1 produces promotes steam turbine 13 and drives generator 14 generatings through main heat transfer steam tube 2, and the back that is cooled is returned heat absorption vaporizer 1, reciprocation cycle through recycle pump 18 through liquid return pipe 7.
Fig. 5 is an assisted gravity heat pipe fundamental diagram; As shown in the figure, the boiling point of the liquid medium in the assisted gravity heat pipe 9 is less than the boiling point of evaporative medium in the heat absorption vaporizer 1, and the liquid medium in the assisted gravity heat pipe 9 is vaporized after absorbing geothermal power; Latent heat steam is carrying ascension in the assisted gravity heat pipe 9 of high temperature heat in the negative pressure of vacuum environment; Main heat transfer steam tube 2 is in the encirclement of heat wave, and in the process that latent heat steam rises, vacuum heat-preserving tube 6 has at first played the vacuum heat-insulation effect; When still having the part cold airflow to invade; Also be heat exchange to take place, thereby main heat transfer steam tube 2 is effectively protected, reach effective acting or reduce the loss in the main heat transfer steam tube 2 remote transmission heat energy processes with assisted gravity heat pipe 9.When steam ascension to ground and at the tube wall place when condensation forms liquid in assisted gravity heat pipe 9, it flows back to the bottom along tube wall under action of gravity, circulates once more, and this moment can tracing thermal-insulating; Certainly the steam that also exists in the assisted gravity heat pipe 9 is noncondensing, and the state that exists with vapor form all the time, this state can be realized to main heat transfer steam tube 2 additional heat.
The preparation process of down-hole of the present invention partial devices is: subdrilling a bite heavy caliber deep-well; To absorb heat vaporizer 1, main heat transfer steam tube 2 after the prefabricated processing in ground; Segmentation is suppressed suitable to the shaft bottom successively through pipe collar connection soldering and sealing, assisted gravity heat pipe 9, vacuum heat-preserving tube 6 also are that prefabricate is suitable to the down-hole with the way that the pipe collar screw thread welds again successively, and integral body vacuumizes or be pressed into working medium or water; Accomplish through ground vacuum pumping valve group 21, main material mainly adopts the prefabricated of high-temperature-resistant and anti-corrosion.
Embodiment 2:
The single deep-well gravity vacuum of this myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method; Heat absorption vaporizer 1 with between 500-1500 ℃ of the thousands of degree of the high temperature HQ high grade in underground deep or the high temperature heat more than 1500 ℃ absorbs and vaporization after; Latent heat steam is carrying high temperature heat and is ordering about under the effect at the negative pressure of vacuum environment; Along the main heat transfer steam tube 2 under heat wave holds in assisted gravity heat pipe 9; Rush at a high speed in the environment that multitube encircles radiator 3 more; Encircle radiator 3 walls through multitube more high temperature heat in the steam latent heat of vaporization is passed in the cryogenic liquide working medium or water in the heat accumulation energy storage tank 5, meet the cold liquid that becomes again in the radiator 3 after the steam heat releases, liquid flows back into again along main heat transfer steam tube 2 tube walls under the effect of gravity and carries out the secondary heat absorption in the heat absorption vaporizer 1; Evaporation recirculation, the high speed of going round and beginning again circulation continuously passes to underground high temperature heat in the heat accumulation energy storage tank 5 in low boiling working fluid or the water; Liquid working substance after through heat exchange in the heat accumulation energy storage tank 5 or water begin to form a large amount of steam when exceeding boiling point; Can constantly assemble high pressure steam at 1/4 place, jar middle and upper part; High pressure steam goes to promote steam turbine 13 runnings through pneumatic tube and drives generator 14 generatings; Through the cooling of dispelling the heat of the cooler 16 of outlet pipe 11 to heat radiation the tower 15, condensed liquid working substance or water are pressed into through recycle pump 18 and carry out recirculation in the heat accumulation energy storage tank 5 gas after the acting from steam turbine 13 exhaust ports.
Fig. 3 is the apparatus structure schematic representation of the embodiment of the invention 2; In conjunction with shown in Figure 4, the device that the single deep-well gravity vacuum of this myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method uses, it comprises geothermal well 4, gravity vacuum heat pipe 9, heat accumulation energy storage tank 5, steam turbine 13, generator 14, heat radiation tower 15; Gravity vacuum heat pipe 9 is made up of heat absorption vaporizer 1, main heat transfer steam tube 2, radiator 3, vacuum heat-preserving tube 6; It is the environment of vacuum sealing, and heat absorption vaporizer 1 is installed in the bottom of the geothermal well 4 of depth myriametre, and evaporative medium or water in the heat absorption vaporizer 1 are about the 15%-20% of heat pipe confined space environment; Fill heat-conducting filler 10 between heat absorption vaporizer 1 and the geothermal well 4; One end of main heat transfer steam tube 2 connects heat absorption vaporizer 1, and the other end connects radiator 3, and main heat transfer steam tube 2 is passages that the high-temperature steam of heat absorption vaporizer 1 generation rushes at radiator 3 at a high speed; High-temperature steam in radiator 3 after the heat release condensation and through main heat transfer steam tube 2 flow back to the heat absorption vaporizer 1, reciprocation cycle; Outside the main heat transfer steam tube 2 vacuum heat-preserving tube 6 is arranged; Main heat transfer steam tube 2 is positioned at the part of geothermal well 3; Also have assisted gravity heat pipe 9 between itself and the vacuum heat-preserving tube 6, assisted gravity heat pipe 9 is vacuum, vaporizer 1/1st three place of deeply absorbing heat, lower end; Evaporative medium is housed in it, on the vacuum heat-preserving tube 6 vacuum pumping valve is arranged; Radiator 3 is many ring multitubes; It inserts in the ground heat accumulation energy storage tank 5; Heat accumulation energy storage tank 5 is for having the tank body of vacuum heat-insulating layer 22, and heat accumulation energy storage tank 5 connects steam turbine 13, and steam turbine 13 connects generator 14; Steam turbine 13 also connects cooler 16 through outlet pipe 11, and the liquid return pipe 7 that is connected with cooler 16 is connected to heat accumulation energy storage tank 5.When exceeding boiling point, begin to form a large amount of steam, can constantly assemble high pressure steam at 1/4 place, jar middle and upper part and drive generator 14 generatings through the steam port on top along entering of steam tube passage and 13 runnings of promotion steam turbine again through liquid working substance in the heat accumulation energy storage tank 5 or water.
The present invention is owing to will embody temperature difference ladder property energy storage principle fully in design, it is crucial that heat absorption vaporizer, heat accumulation energy storage tank are selected different boiling points.Heat accumulation energy storage tank 5 play accumulate fill, accumulation of energy, pressure stabilization function; Radiator 3 is the many rings of multitube, and each loop pipe is concentric, is arranged in order from the inside to surface; The protruding setting of the recessed circle of such circle mainly is to play to increase the effect that heat exchange area reduces its construction height, reduces cost of investment.
According to designing requirement, want to reach the homeostasis thermodynamic activity, both can according to the better suited boiling point working medium of the temperature required selection of the equipment more than the face of land.This seal valve system quits work automatically when reaching the homeostasis temperature; When cause has no the cold and hot exchange of the low-temperature zone that is lower than this boiling point working zone; Latent heat gas is at the high-temperature gas state all the time; Play the solution thermal insulation and reduced the effect of main heat transfer thermodynamic loss, otherwise played the effect of supplementary thermal energy.
Be not difficult to find out that from above character narrate the inventor has summed up the narrow limitation of underground heat generation technology method in the past from the innovation and the angle of experiment, in order to ensure transmitting the continuity in the inflation process perpendicular to myriametre to tens myriametre on the earth's core; Heat waste and pressure drop inevitable in this process have been considered; Among the embodiment 1, under negative pressure of vacuum measure condition, main heat transfer steam tube 2 is in the diabatic process of last myriametre; What at first want customer service is that the earth's core is to its formed gravitation; Thermodynamic loss besides, the effect of assisted gravity heat pipe 9 has just embodied in this scheme, and it can overcome the unfavorable factor in the above-mentioned main heat-transfer pipe transmittance process; Make its additional process that is accompanied by thermal energy all the time, make pressure, temperature, speed trend towards promoting again in the positive compression swelling equilibrium state scope purpose that steam turbine reaches effective acting generating.This is once to have revolutionary technical combinations; Remote assisted gravity heat pipe 9 devices have realized being not only to have embodied novelty, creativeness and practicability; And topmost its application that embodied, it is to go up myriametre to tens myriametre conduct heat the from top to bottom method of the single deep-well gravity vacuum of myriametre auxiliary heat pipe circulation hot dry rock generating and the important component part (see figure 5) of device.Assisted gravity heat pipe 9 also is to have embodied above repetition effect in embodiment 2; Only be after the geothermal power high pressure steam passes through 13 actings (generating) of (promotion) steam turbine among the embodiment 1; It is to become liquid (or cooler 16 also can directly put into rivers,lakes and seas dispel the heat) after the hot gas heat radiation that gas gets into cooler 16; Condensed liquid passes through pump; Pump into liquid return pipe 7; Under base valve 8 cooperations, on the overlength degree is remote, forming under the situation of myriametre absorbs heat in the gravity fluid column entering heat absorption vaporizer 1 forms secondary cycle to liquid in liquid return pipe 7, and its working medium becomes gaseous state by liquid state and becomes liquid state again; Going round and beginning again does not need other extra powers to accomplish thermal energy transfer, will contain in the subsurface rock slurry to change high pressure steam into from the huge inexhaustible high temperature heat concerning the mankind in earth middle part and promote steam turbine 13 and drive generators 14 and provide the energy of sustainable clean cleaning, cheap electric energy.Though embodiment 1 distinguishes with embodiment's 2 methods to some extent; But total mechanism is identical with operating mechanism; The ratio of efficient will just can embody in actual motion; In this method and mechanism running; They can both be efficiently, the heat energy in the xeothermic rock slurry of the tens myriametre degree of depth effectively is sent to is human service on the ground to greatest extent, the characteristic that this invention way of thinking is had embody a concentrated expression of heat absorption vaporizer 1 be diameter surpass 200 millimeters to more than 500 millimeters or 500 millimeters, 500 meters of length are to the huge large size thermal-arrest heat absorption coverter more than 1000 meters or 1000 meters, are perpendicular to the face of land.Because the Design Conception of overlength has been broken conventional mind and imagination, especially the inventor is to the understanding and the understanding of deep Earth ambient temperature formation.The huge high-temperature heat flux of the earth for example is through the poor conductor earth's crust being distributed in the unlimited cold energy environment in atmospheric layer and universe slowly.If this invention is to be based upon on the viewpoint of world view to understand.When the energy of heat greater than cold energy, heat is exactly to cold direction conduction from heat.If when the energy of cold energy greater than heat, at this moment cold energy is exactly the direction conduction of thermotropism.No matter be the universe earth, not the problem that the present invention studies, solved the uneven problem of the slow temperature gradient of deep Earth heat of obtaining to heat absorption vaporizer 1 enlarged diameter lengthening.Because on the face of land the temperature that will utilize be certain, be constant, pass and change latent heat of vaporization vapor (steam) temperature and be controlled between 250-500 ℃ and both can.During the heat absorption of the heat-obtaining below myriametre heat absorption vaporizer 1 heat-obtaining, its device has crossed per hundred meters different temperature layers like this, the temperature field so just become can store the accumulation of heat self-control obtained the operative installations of heat energy continuously.Here; Proposed first the collaborative new ideas in transmittance process field; Set up and found the collaborative theory in field of the reinforcement and the control of transmittance process; And developed into general principle, its essence of various convection heat exchange facilitation phenomenons of unifying the understanding, and can become the general theory of strengthening the single-phase convection heat exchange.Propose new physical quantity-heat transport potential capacity and heat transport potential capacity dissipation extremum principle, can be used for the optimization of convection heat exchange.Set up the collaborative equation of velocity field and heat flow field, tried to achieve in the optimum speed field that has under certain constraint conditio, collaborative best with heat flow field, heat exchange efficiency is the highest.The development of field collaborative theoretical proposition promotion thermal conduction study; Based on this theory; In pipe, have breakthrough on the design principle of augmentation of heat transfer and the criterion; Formed remote (gravity vacuum) gas and be full of space theory and gravity vacuum free-flow potential energy new theory, promoted improvement of Manufacturing Technology, made the gradient that liquid refrigerant crosses a little km of stratum different temperatures layer under the nuclear attitude situation; The time-delay heating has explained that the terrestrial heat flow value rate of heat flow is slow, unbalanced, the constant new enlightenment of obtaining underground parallel temperature of unsteady state, and has developed multiple have original heat conduction reinforced new technology and heat transmission equipment.Again since the diameter of main heat transfer steam tube 2 and heat absorption vaporizer 1 can strengthen and extended; Be again in negative pressure of vacuum idle loop border; Overcome or offset earth gravitational field and might design on the ground greater than the heat absorption heat exchange area of vaporizer more than 10 times; Impel its effect greater than thermal environment; Make the cold energy of cold environment constantly continuous passed to heat radiation tower cooler device and the working medium in the rivers,lakes and seas condenser huge or that flow fast, HTHP latent heat working substance steam is vacuumizing constantly ascension rising in the environment.And condensed liquid constantly descends under the effect of gravity and constantly.It is an a kind of energy revolution that is different from other energy, geothermal power switch technology.Embodiment 2 is mainly reflected in device does not have liquid return pipe 7; Working medium be in vacuumizing the back subnormal ambient lower through heat absorption vaporizer 1 with the high temperature HQ high grade in underground deep between 500-1500 ℃ of the thousands of degree or the high temperature heat more than 1500 ℃ absorb; Liquid working substance in the heat absorption vaporizer 1 or water (will select the working medium of different boiling according to different depth or temperature) are about the 15%-20% of heat pipe confined space environment;, main heat transfer steam tube 2 or assisted gravity heat pipe 9 again working medium is injected wherein after vacuumizing; Like this latent heat steam after the evaporation of heat absorption vaporizer 1 carrying high temperature heat the negative pressure of vacuum environment order about effect down high speed rush in the environment that multitube encircles radiator 3 more; Encircle radiator 3 walls through multitube exchanges high temperature heat transmission in the steam gasification latent heat in the cryogenic liquide working medium or water in the heat accumulation energy storage tank 5 more; After making the steam chance cold after radiator 3 heat releases, become liquid again; Liquid under the effect of gravity along multitube or encircle radiator 3 walls through carrying out the secondary heat absorption in the environment that is connected to main heat transfer steam tube 2 tube walls in the adiabatic section assisted gravity heat pipe 9 and flows back into heat absorption vaporizer 1 again more; Evaporation recirculation, the high speed of going round and beginning again circulation continuously passes to underground heat energy in the heat accumulation intrinsic energy jar 5 in low boiling working fluid or the water.
Claims (8)
1. the single deep-well gravity vacuum of a myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method is characterized in that: the single deep-well gravity vacuum of this myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method, the high temperature heat below the underground myriametre of heat absorption vaporizer (1) absorption; Medium evaporation back produces high pressure steam in it; High pressure steam rises to ground at a high speed along under the holding of main heat transfer steam tube (2) heat wave in assisted gravity heat pipe (9), promotes steam turbine (13) acting generating; After the generating; Gas is condensed, and condensed liquid pumps into liquid return pipe (7) through pump; Under liquid base valve (8) in liquid return pipe (7) cooperates; Forming absorbs heat in the gravity fluid column entering heat absorption vaporizer (1) carries out secondary cycle, goes round and begins again and changes the high temperature heat of containing in the subsurface rock slurry into high pressure steam, promotes steam turbine (13) drive generator (14) generating.
2. the device that uses of the single deep-well gravity vacuum of myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method; It is characterized in that: its heat absorption vaporizer (1) is installed in the bottom of the geothermal well (4) of depth myriametre; Main heat transfer steam tube (2) one ends connect heat absorption vaporizer (1); One end connects steam turbine (13); Steam turbine (13) connects generator (14), and steam turbine (13) also connects cooler (16) through outlet pipe (11), and the liquid return pipe (7) that is connected with cooler (16) inserts in the heat absorption vaporizer (1) downwards; Recycle pump (18) is installed on the liquid return pipe (7), and the position that liquid return pipe (7) inserts in the heat absorption vaporizer (1) is equipped with one-way valve (8); Vacuum heat-preserving tube (6) is arranged outside the main heat transfer steam tube (2); Main heat transfer steam tube (2) is positioned at the part of geothermal well (4); Also has assisted gravity heat pipe (9) between itself and the vacuum heat-preserving tube (6); Assisted gravity heat pipe (9) is a vacuum, and the endotherm section of its lower end deeply absorbs heat in the vaporizer (1) or is looped around outside the heat absorption vaporizer (1), and evaporative medium is housed in it.
3. the device that the single deep-well gravity vacuum of myriametre according to claim 2 auxiliary heat pipe circulation hot dry rock electricity-generating method uses; It is characterized in that: described main heat transfer steam tube (2) is gone up surge tank (20) is installed, and specifically is that surge tank (20) is installed on the main heat transfer steam tube (2) between ground and the steam turbine (13).
4. the single deep-well gravity vacuum of myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method; It is characterized in that: heat absorption vaporizer (1) absorbs the high temperature heat below the underground myriametre; After medium evaporates in it; Latent heat steam is carrying high temperature heat and is ordering about effect down at the negative pressure of vacuum environment, the main heat transfer steam tube (2) under the holding of heat wave in assisted gravity heat pipe (9), and high speed rushes at multitube and encircles radiator (3) more; Encircle radiator (3) wall through multitube passes to the steam latent heat of vaporization in the cryogenic liquide working medium or water in the heat accumulation energy storage tank (5) more; Steam is met the cold liquid that becomes after radiator (3) heat release, and liquid flows back into again under the effect of gravity and carries out the secondary heat absorption in the heat absorption vaporizer (1), evaporation recirculation; The high speed circulation that goes round and begins again continuously passes to underground high temperature heat in middle low boiling working fluid of heat accumulation energy storage tank (5) or the water; When exceeding boiling point through liquid working substance in the heat accumulation energy storage tank (5) or water, begin to form a large amount of steam, can constantly assemble high pressure steam at 1/4 place, jar middle and upper part, this high pressure steam promotes steam turbine (13) running and drives generator (14) generating; The cooling of dispelling the heat of gas after the acting, condensed liquid working substance or water are pressed in the heat accumulation energy storage tank (5) through recycle pump (18) and carry out recirculation.
5. the device that uses of the single deep-well gravity vacuum of myriametre auxiliary heat pipe circulation hot dry rock electricity-generating method; It is characterized in that: its heat absorption vaporizer (1) is installed in the bottom of the geothermal well (4) of depth myriametre; Main heat transfer steam tube (2) one ends connect heat absorption vaporizer (1), and an end connects radiator (3), and radiator (3) inserts in the ground heat accumulation energy storage tank (5); Heat accumulation energy storage tank (5) connects steam turbine (13); Steam turbine (13) connects generator (14), and steam turbine (13) also connects cooler (16) through outlet pipe (11), and the liquid return pipe (7) that is connected with cooler (16) is connected to heat accumulation energy storage tank (5); Vacuum heat-preserving tube (6) is arranged outside the main heat transfer steam tube (2); Main heat transfer steam tube (2) is positioned at the part of geothermal well (4); Also has assisted gravity heat pipe (9) between itself and the vacuum heat-preserving tube (6); Assisted gravity heat pipe (9) is a vacuum, and the endotherm section of its lower end deeply absorbs heat in the vaporizer (1) or is looped around outside the heat absorption vaporizer (1), and evaporative medium is housed in it.
6. according to the device of claim 2 or the use of the single deep-well gravity vacuum of 5 described myriametres auxiliary heat pipe circulation hot dry rock electricity-generating method, it is characterized in that: fill heat-conducting filler (10) between described heat absorption vaporizer (1) and the geothermal well (4).
7. according to the device of claim 2 or the use of the single deep-well gravity vacuum of 5 described myriametres auxiliary heat pipe circulation hot dry rock electricity-generating method, it is characterized in that: between described vacuum heat-preserving tube (6) and the geothermal well (4) the thermal insulation material is arranged.
8. the device that uses according to claim 2 or the single deep-well gravity vacuum of 5 described myriametres auxiliary heat pipe circulation hot dry rock electricity-generating methods; It is characterized in that: vapor (steam) temperature is controlled between 250-500 ℃ in the described main heat transfer steam tube (2); The area design of cooler (16) is for absorbing heat vaporizer (1) area more than 10 times, and the area of heat accumulation energy storage tank (5) also is designed to absorb heat vaporizer (1) area more than 10 times.
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Correction item: Patentee|Address Correct: Gong Zhiyong|East Lake Street Ranghulu District 163000 Heilongjiang city of Daqing province East Lake 936 District No. 2 Room 401 False: Daqing City, three three new energy science and technology development limited company|4 incubator No. 163000, science and technology incubator, Daqing hi tech Zone, Heilongjiang, 605 Number: 22 Volume: 33 |
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Application publication date: 20101124 Assignee: BEIJING CAPITAL Co.,Ltd. Assignor: Daqing sannin new energy science and technology development Ltd. Contract record no.: 2018990000330 Denomination of invention: Cycling hot-dry-rock generating method and device by using gravity vacuum auxiliary heat pipe in myriameter single-deep-well Granted publication date: 20120905 License type: Exclusive License Record date: 20181204 |
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