CN202900338U - Back-pressure-heating circulation power generation and multi-stage back-pressure-heating circulation power generation and multi-generation system - Google Patents
Back-pressure-heating circulation power generation and multi-stage back-pressure-heating circulation power generation and multi-generation system Download PDFInfo
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- CN202900338U CN202900338U CN2012202241259U CN201220224125U CN202900338U CN 202900338 U CN202900338 U CN 202900338U CN 2012202241259 U CN2012202241259 U CN 2012202241259U CN 201220224125 U CN201220224125 U CN 201220224125U CN 202900338 U CN202900338 U CN 202900338U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Abstract
The utility model provides a back-pressure-heating circulation power generation and multi-stage back-pressure-heating circulation power generation and multi-generation system. The back-pressure-heating circulation power generation and multi-stage back-pressure-heating circulation power generation and multi-generation system comprises at least one device used for converting heat energy into mechanical energy, after the heat energy is converted into the mechanical energy, a generator is driven to generate power, discharged work medium passes through a back-pressure heater and is heated again, and the heated work medium enters the device used for converting the heat energy into the mechanical energy to carry out circulation acting and power generation. A back-pressure heating method is that residual heat after power generation is heated again in a back-pressure mode, rather than that the residual heat is cooled through a condenser and circulation power generation is carried out again, the residual heat after power generation passes through a heat exchanger, a boiler, a compressor and the like according to temperature and pressure required by the generator, the work medium after power generation is recovered into the work medium with the temperature and pressure required by a generator unit in a back pressure mode, and then the work medium enters the generator unit again for power generation. Therefore, the back-pressure-heating circulation power generation and multi-stage back-pressure-heating circulation power generation and multi-generation system does not need the condenser and does not waste the heat energy largely, and only needs the energy required in a re-circulation process for supplement to achieves circulation power generation.
Description
Technical field
The utility model relates to circulating generation, particularly carries on the back the thermal cycle generating, and multistage back of the body thermal cycle generating and co-generation unit, and its waste heat can be used for the application such as heating, refrigeration, drying, hot water.
Background technique
Since Turbo-generator Set was come out, people were in the approach of constantly seeking to improve conversion efficiency of thermoelectric.In order to improve generator set efficient, reduce gross coal consumption rate, the steam parameter that the thermal power generation unit uses has experienced several developing stage such as low pressure, middle pressure, high pressure, ultrahigh pressure, subcritical pressure boiler and supercritical pressure.Along with the raising of vapor pressure, at first run into last stage vane of steam turbine because of steam moisture excessive (〉 12%) the serious difficult problem of erosion.Adopt very high initial steam temperature, although can.Solve to a certain extent this difficult problem, but must use the very expensive austenitic steel of price to make superheater and the relevant parts of steam turbine, the cost of unit is improved, and the welding technological properties of austenitic steel is poor.The reliability of unit work reduces, and forces people to seek the approach that other improve unit efficiency.Adopt reheat vapor cycle, can solve more satisfactorily an above-mentioned difficult problem.After initial steam entered the high pressure cylinder expansion acting of steam turbine, after the boiler reheater of making a gift to someone improved steam temperature (steam temperature after the general again heat is identical with the initial steam temperature), the intermediate pressure cylinder that returns steam turbine continued the acting of expanding.Adopt reheat vapor cycle, can obtain higher efficient equally with adopting raising initial steam temperature, and the requirement of boiler, some parts material of steam turbine is reduced, functional reliability significantly improves.Facts have proved, it is higher adopting the total economic benefit of reheat vapor cycle generator set.Therefore, ultrahigh pressure and subcritical pressure boiler unit generally adopt resuperheat one time at present.Though adopt double reheat to can further improve unit efficiency, because efficient improves seldom, and make system too complicated, so, adopt few.So-called resuperheat circulation, with the steam behind the steam turbine high-pressure cylinder expansion working, the reheater of sending into boiler heats again, makes it heating (overheated) to close with nominal steam temperature or equate, and then send back to steam turbine in, low pressure (LP) cylinder continues expansion working.
Its purpose has two: ⑴ reduces exhaust steam moisture, improves the exhaust steam mass dryness fraction.Because large-scale unit first pressing improves, exhaust steam moisture is increased, to what blade erosion increase of end of steam turbine.Can reduce exhaust steam moisture although improve initial temperature, be subjected to the restriction of metallic material heat resistance, therefore improve less to exhaust steam moisture.Adopt the resuperheat circulation to be conducive to the improvement of exhaust steam moisture, so that exhaust steam moisture drops in the scope of permission, alleviate the erosion to blade, improve the internal efficiency of low-pressure section.⑵ take resuperheat, correctly select reheat pressure after, can improve thermal efficiency of cycle approximately 4～5%.
Heat engine be absorb heat energy and wherein a part be converted to outwards prime mover of output of mechanical work, the heat engine principle is that the chemical energy with fuel changes into an interior class that can change into again the machine power machinery of mechanical energy, such as steamer, steam turbine, gas turbine, internal-combustion engine, air breathing engine etc.Heat engine usually with gas as working medium (media material of transferring energy is working medium), the externally acting that utilizes that when gases are heated, they expand.The source of heat energy mainly contains heat energy, atomic power, solar energy and the underground heat etc. that fuel combustion produces.
Distributed energy resource system refers to energy system is arranged in user side with small-scale, small capacity, modularization, distributed mode, comes that transmitted in both directions is hot and cold, electric energy.Owing to can improve energy utilization rate and Supply Security, realize energy-on-demand and for the user provides more more options, distributed energy resource system becomes the important development direction of global power industry and energy industry.The energy utilization rate of distributed energy resource system be higher than far away majority state rely on large-scale main power station with electric power from the power station central power supply system to terminal use's one-way transmission.1/3 heat energy that the power station finally can only produce the fuel energy burning changes into electric energy, and nearly 50% heat energy loss, the heat energy of transmission link loss nearly 10%.And current 20% capacity of installed generator only is used for satisfying the demand of peak times of power consumption.Therefore, these generator set only account for 5% of whole unit operation times working time, and generated energy only accounts for 1% of generating total amount.Owing to only relying on several main line transferring electric powers, the power supply line of the central power supply system problem of blocking up highlights day by day.The power supply surplus forces public public institution to rely on the higher and lower energy of efficient of contaminativity to generate electricity to satisfy the peak times of power consumption demand, rather than simply dump power is distributed to the high market of demand again from the low market of demand, thereby cause energy utilization rate more low.Yet the distributed combined heat and power generation unit all is the cogeneration of heat and power of adopting traditional energy to realize, and does not have the cogeneration units of heat accumulating type, like this obstacle the application of new energy and cogeneration units.
Generator by Steam Turbine Driven, the superheated vapor that is produced by boiler enters the acting of expanding in the steam turbine, make blade rotation and drive generator generating, the waste vapour after the acting through vapour condenser, circulating water pump, condensate pump, send boiler back to water heater etc. and recycle.Because condensation process is wasted a large amount of heat energy, causes whole cycle efficiency low.Although adopt reheat vapor cycle in the fuel gas generation process, just in order to reduce gas humidity and can only to improve the thermal efficiency approximately 4～5%, and the gas of heat is a small part again, can not all realize recycling.
Summary of the invention
The purpose of this utility model provides a kind of back of the body thermal cycle generating and the heat generating of the multiple stage circulation back of the body and polygenerations systeme, can be without the circulating generation of condensation realization, adopting at least one is the equipment of mechanical energy with thermal power transfer, be mechanical energy rear driving generator generating with thermal power transfer, the working medium of discharging heats through a hot device of the back of the body again, and it is the workmanship's generating that circulates of the equipment of mechanical energy that heated working medium enters into thermal power transfer again.The generating of back of the body heat mainly is that the waste heat after the generating is carried out again heat of back pressure, rather than by condenser temperature is reduced rear recirculation and generate electricity, but after heating again, heat carries out circulating generation through carrying on the back, with the temperature and pressure of the waste heat after the generating according to the generator requirement, pass through heat exchanger, boiler, compressor etc., working medium back of the body heat after the generating is restored to the working medium that meets the temperature and pressure that generator set requires, again entering into generator set generates electricity, thereby this circulatory system need not the condenser waste that heat energy is a large amount of, only need to replenish the needed energy in the process recycling, just can realize circulating generation.
Another one purpose of the present utility model, it is a kind of multistage back of the body thermal cycle power generation system, the generating of a kind of multistage back of the body heat and polygenerations systeme, at least be provided with a low temperature back of the body thermal electric generator group and a high temperature back of the body thermal electric generator group, waste heat after the generating of a power generation system is utilized by another power generation system, realizes the generating of multistage UTILIZATION OF VESIDUAL HEAT IN.The generating that 60-450 degree centigrade thermal source is realized is divided into low-temperature electricity-generating, adopting 450-1200 degree centigrade thermal source to generate electricity is the high temperature generating, the waste heat of the power generation system of twin-stage can be by in addition one-level utilization, thereby can realize step generating cascade utilization, thereby also realized multistage complementation utilization generating.High temperature and low low-temperature electricity-generating are a kind of division, can adopt other the division packet mode, the utility model is not limited to this kind division.
Simultaneously owing to adopting distributed formula collection and distributed multi-stage complemental power-generation, thereby realized distributed multi-stage heat generating, in the solar power system of every one-level, adopt refrigeration, supply application dry, hot water, namely realized UTILIZATION OF VESIDUAL HEAT IN, realize again the condensation to working medium, thereby increased the whole utilization efficiency of heat energy of system.
Concrete summary of the invention is as follows:
A kind of back of the body thermal cycle power generation system, comprise with thermal power transfer being energy conversion equipment, generator, the heat exchanger of mechanical energy, thermal accumulator, it is characterized in that: at least one energy conversion equipment, be mechanical energy rear driving generator generating with thermal power transfer, the working medium of discharging heats through a hot device of the back of the body again, and the working medium that is reheated again enters into energy conversion equipment and carries out the circular work generating.
Be that the energy conversion equipment of mechanical energy is selected following a kind of with thermal power transfer:
A, heat engine;
B, decompressor;
C, steam turbine.
Because adopt the different energy, thereby the hot device of the back of the body that adopts is just different with generator set, as adopting traditional energy, can adopt heat engine, gas turbine, steam turbine that traditional energy is converted to heat energy, need to be converted to heat energy with traditional energy this moment by burning; If adopted the renewable sources of energy such as underground heat, waste heat, do not have combustion system this moment, thereby can carry by decompressor, and conversion is realized on the steam turbine mountain.But the sort of energy no matter, can find a kind of suitable be the equipment of mechanical energy with thermal power transfer.As long as meet the requirements, in the utility model, can adopt.
Carry on the back hot device and be at least a in a kind of heat exchanger, boiler or the compressor, carry on the back hot device and utilize the outside energy, the generating working medium is heated to the physical parameter of setting.
Carrying on the back hot device utilizes the outside energy to select from following a kind of or its combination:
A, traditional energy;
B, renewable energy sources;
C, new energy.
According to utilizing the dissimilar of the energy, carry on the back the mode that hot device adopts also different, for traditional energy, can adopt heat exchanger, boiler, compressor, so adopt heat engine that traditional energy is become heat energy, need this moment heat exchanger and generating working medium to carry out heat exchange, perhaps by the direct heating generating working medium such as boiler, if adopt renewable energy sources or new energy, such as solar energy, underground heat, waste heat can be by the heating of heat exchanger realization to the generating working medium, if adopt biogas, biomass energy, can adopt boiler burning or and other heat engines realize the heating to working medium; If the employing electric energy, can adopt compressor that gas generating working medium is compressed after, the recirculation generating.Can according to this principle to the different energy, in different ways, realize back of the body thermal cycle generating.
The generating of a kind of multistage back of the body heat and polygenerations systeme are provided with a low temperature back of the body thermal electric generator group and a high temperature back of the body thermal electric generator group at least, and the waste heat after the generating of a power generation system is utilized by another power generation system, realizes the generating of multistage UTILIZATION OF VESIDUAL HEAT IN.
Also be provided with the thermal accumulator of different temperatures, before the low-temperature electricity-generating unit enters generator set, the high temperature generator set enter generator set before, high temperature generator set institute exhaust port, be provided with heat-accumulating material in thermal accumulator, heat-accumulating material is selected from following at least a or its combination:
A, water;
B, conduction oil;
C, solid-liquid phase change, solid-solid phase change material;
D, fuse salt.
The heat energy that adopts following a kind of mode that high temperature is carried on the back the working medium that the thermal electric generator group discharges is the energy, is used for the generating of low-temperature electricity-generating unit:
A, the working medium that the high temperature generator set is discharged are delivered directly in the low-temperature electricity-generating unit and generate electricity;
B, the working medium of being discharged take the high temperature generator set carry on the back hot device through one group as thermal source, the working medium heating of low-temperature electricity-generating is generated electricity, this carries on the back the generator working medium outlet that hot device is arranged on the high temperature generator set, the temperature end of heat exchanger is reduced to low temperature with the working medium of high temperature generating by high temperature, and the low-temperature end of heat exchanger heats up the working medium of low-temperature electricity-generating or evaporates;
C, the working medium that the high temperature generator set is discharged are transported in the thermal accumulator, undertaken after the heat exchange heat energy being carried out accumulation of heat by one group of heat-exchanger rig and thermal accumulator, be provided with one group of heat exchanger between low-temperature electricity-generating unit and the thermal accumulator, when needs generate electricity, carry out heat exchange by heat exchanger and low-temperature electricity-generating unit and realize generating.
The waste heat of the working medium after the low-temperature generating system generating adopts one of following manner as the energy of high temperature generating:
A, the waste heat behind the low-temperature electricity-generating is mixed the common energy that consists of the high temperature generating with high temperature heat source;
B, the waste heat of low-temperature electricity-generating is heated to the temperature of the thermal source of high temperature solar generating again, carries out the high temperature generating;
C, the waste heat of low-temperature electricity-generating is pressurized to the temperature and pressure of the thermal source of high temperature solar generating again, carries out the high temperature generating.
The waste heat of D, low-temperature electricity-generating directly carries out heat exchange with thermal accumulator, and in thermal accumulator, the working medium with the high temperature generating carries out heat exchange realization UTILIZATION OF VESIDUAL HEAT IN when needed with thermal energy storage.
High temperature generator set and low-temperature electricity-generating unit can form two independently power generation cycle system generatings, and system can realize every grade of Independent Power Generation; Can realize again the multistage complementary step generating that utilizes, the twin-stage generating can be adopted same generating working medium, also can adopt different generating working mediums, can adopt same power generation cycle, also can adopt different power generation cycle.
Steam turbine or the generating of back pressure turbine group are adopted in the high temperature generating, and low temperature adopts the decompressor unit generation, and it is that working medium generates electricity that the high temperature generator set adopts steam, and low temperature adopts the Lang Ken circulating generation of organic working medium.
Can carry out as required different Combination Design, as long as can realize carrying on the back the thermal cycle generating, all be content of the present utility model.
Carry on the back the solar low-temperature acquisition system that renewable energy sources in the extra power that hot device utilizes or new energy adopt and adopt following a kind of or its combination:
A, single port solar vacuum heat-collecting pipe;
B, bilateral solar vacuum heat-collecting pipe;
C, solar heat-collection plate;
D, in A, B, C acquisition system, add the acquisition system that the Fresnel diaphotoscope of fresnel reflecting mirror, linear focusing or the point focusing of metal, glass, film reflection or transmittance plate or linear focusing or point focusing forms.
The solar energy high temperature acquisition system adopts following a kind of or its combination:
A, slot type;
B, tower;
D, dish formula;
E, Fresnel mirror.
The generating working medium can adopt traditional water or the organic working medium of low temperature, and all refrigeration agent class materials and combination thereof can become the generating working medium, and its preferred described generating working medium comprises at least one in the following type at least:
A, freon;
B, ammonia;
C, water;
D, hydrocarbon;
E, alcohol;
F, greenhouse gases.
Also be provided with Poly-generation equipment, Poly-generation equipment is arranged on generator set working medium exhaust port or is connected with generator set by a heat exchanger that is arranged on the working medium outlet port, the waste heat of the working medium after the generating is used, Poly-generation equipment is connected with generator outlet, connects realization and connects by series, parallel, mixing between a plurality of Poly-generation equipment arrange; Poly-generation equipment is selected from following at least a:
A, heating equipment: a circulation closed system that is formed by heat exchanger or the thermal accumulator that is connected with heat exchanger, the radiator of heating, floor heating pipeline, recycle pump, the high temperature fluid of this heat exchanger is the power generation cycle fluid, realization is carried out heat exchange to the generating working medium, the low temperature heating fluid of heat exchanger by heat exchanger with thermal power transfer to the low temperature heating fluid, the low temperature heating fluid through recycle pump with thermal energy transfer on the radiator, floor heating pipeline of heating, realize the heating to building;
B, domestic hot-water's equipment: formed by heat exchanger or the thermal accumulator that is connected with heat exchanger, water switch, shower nozzle, pump, the high temperature fluid of this heat exchanger is the power generation cycle fluid, realization utilizes the generating working medium, and cryogen heats the domestic hot-water;
C, chiller plant: a circulation closed system that is formed by heat exchanger or the thermal accumulator that is connected with heat exchanger, cooling machine set, recycle pump, the high temperature fluid of this heat exchanger is the power generation cycle fluid, realization is carried out heat exchange to the generating working medium, the cryogenic refrigeration fluid of heat exchanger obtains heat energy by heat exchanger, freezes by cooling machine set;
D, Water boiling equipment: be comprised of the boiling water thermal accumulator, the water switch that carry out heat exchange with heat exchanger, heat exchanger is heated as boiling water with the hot water of boiling water thermal accumulator, and the temperature of the generating working medium of heat exchanger is higher than 100 degree;
E, drying equipment: be comprised of the drying equipment that carries out heat exchange with heat exchanger, heat exchanger provides heat energy for drying equipment;
F, cooking equipment: be comprised of the cooking equipment that carries out heat exchange with heat exchanger, heat exchanger provides heat energy for cooking equipment.
A plurality of solar low-temperature acquisition systems carry out distributed capture and a plurality of solar energy high temperature acquisition system is carried out distributed capture, form a plurality of solar low-temperature heat source systems after gathering, a plurality of low-temperature heat sources and a plurality of low-temperature electricity-generating unit are realized distributed power generation, and the energy of a plurality of high temperature acquisition system collection enters into high-temperature power generation system and carries out distributed power generation; Waste heat after the generating of low-temperature electricity-generating and high temperature generating utilizes mutually, enters into low temperature after the thermal source after the generating is used through refrigeration, dry, heating Poly-generation or the high temperature acquisition system is carried out circulating generation again.
Back of the body thermal cycle generating need at first utilize the equipment of thermal power transfer for mechanical energy is heated working medium, generates electricity after by vaporizer working medium being evaporated.After working medium after the generating is got rid of from generator set, enter into the back of the body hot device heat, this heating plant can adopt and at first utilize the equipment of thermal power transfer for mechanical energy, also can adopt the other energy that equipment is provided, in its On The Cycle Working Process, the main energy provides to the hot device of the back of the body, and a small amount of energy offers vaporizer, and the working medium of condensation is evaporated.Realize like this circulating generation, this process is different from traditional power generation cycle.
The beneficial effects of the utility model:
1, the utility model adopts the working medium after the hot device of the back of the body will generate electricity again to heat, and need not and will just can generate electricity after the working medium condensation, be a kind of brand-new circulating generation pattern.
2, in the utility model working procedure, the main energy is carried to the hot device of the back of the body, is used for working medium is heated, and other parts be used for a small amount of condensed fluid is heated, thereby efficient are high.
3, multistage generating of the present utility model can utilize the waste heat after the generating, thereby improved the energy utilization rate of total system, has realized the generating of step collection and step.
4, the utility model can be realized distributed, low-cost heat generating system, can be used for the generating of family and extensive power station electrical network.
Description of drawings
Fig. 1 is the schematic diagram of back of the body thermal cycle power generation system;
Fig. 2 is the schematic diagram of high low temperature multistage back of the body thermal cycle power generation system;
Fig. 3 is the schematic diagram of the low multistage back of the body thermal cycle of high temperature power generation system;
Fig. 4 is the schematic diagram of multistage series parallel connection back of the body thermal cycle power generation system;
Fig. 5 is the schematic diagram of the high low temperature multistage back of the body thermal cycle power generation system of two-stage and polygenerations systeme;
Fig. 6 is the schematic diagram of distributed two-stage multistage back of the body thermal cycle power generation system and polygenerations systeme.
The number in the figure implication:
1: be the equipment of mechanical energy with thermal power transfer, 2: generator, 3: carry on the back hot device, 4: extra power, 5: thermal accumulator, 6: cooking equipment, 7: drying equipment, 8: cooling machine set, 9: Living Water bath apparatus, 10: heating equipment.
Embodiment
Being provided with among Fig. 1 thermal power transfer is equipment 1 and the generator 2 of mechanical energy, and the working medium after the generating is after carrying on the back hot device 3 and heating, and again entering into thermal power transfer is the equipment 1 of mechanical energy, adopts extra power 4 to provide the energy for it; In the present embodiment, be the equipment 1 employing steam turbine of mechanical energy with thermal power transfer, carry on the back hot device 3 and be boiler, extra power 4 adopts coals, and coal makes its temperature and pressure that reaches design by boiler heating work medium, generates electricity by the Steam Turbine Driven generator.
Native system at first provides system's energy to start by an energy in the beginning start-up course, and this belongs to traditional known technology, thereby has again simplified, and after the power generation system normal power generation, restarts extra power 4 and realizes back of the body thermal cycle generating.Same the carrying out according to this of embodiment once in the utility model is because be no longer statement in known technology thereby the following case.
Fig. 2 forms by the equipment 1 that high temperature heat is converted to mechanical energy and high temperature generator 2 and with equipment 1 and cryogenerator 2 that low temperature heat energy is converted to mechanical energy, the high temperature generating is the diagram left part, the back pressure generator set is adopted in the high temperature generating, the generating working medium is water vapor, working medium after the generating of high temperature power generation part directly enters into low-temperature generating system and carries out secondary electricity generation, working medium after the low-temperature generating system generating enters into the hot device 3 of the back of the body, system offers the energy by extra power, with the high-temperature temperature of waste-heat to setting, and then entering into high temperature generator set realization generating, circulation realizes the generating of two-stage like this.Adopt high temperature to the generating of low temperature, can realize carrying on the back the generating of thermal cycle generating peak efficiency, the energy is waste not, can realize efficient generating.
As shown in Figure 3, the present embodiment also is the power generation system of two-stage, difference is that power generation cycle is by the circulation of low temperature to high temperature, the diagram left part is for being converted to low temperature heat energy equipment 1 and the cryogenerator 2 of mechanical energy, after heating through the hot device of the back of the body, waste heat behind the low-temperature electricity-generating becomes the energy of High Temperature High Pressure, entering into high-temperature power generation system realization generating, the waste heat after the generating directly enters into low-temperature generating system and generates electricity.
By embodiment 2 and 3, announced by high temperature to low-temperature circulating, and two kinds of different back of the body thermal cycle modes of the circulation from low temperature to high temperature, can design as requested and select, adopt which kind of mode.
As shown in Figure 4, generated electricity by the thermal cycle of four groups of back ofs the body in the present embodiment, two groups of first-selected serial fashions that adopt on left side and right side make up, all be by the power generation system of high temperature to low-temperature circulating, working medium behind two groups of low-temperature electricity-generatings enters into the hot device 3 of the back of the body by thermal accumulator 5, carry on the back hot device and provide the energy by solar energy 4, working medium is heated to the temperature of design by carrying on the back hot device, the back of the body thermal cycle unit of by a high-temperature heat accumulation device 5 working medium being distributed to two groups of high temperature again generates electricity, and has realized like this carrying out back of the body thermal cycle generating in parallel after two groups of series connection.
As shown in Figure 5, originally be that embodiment is by the two-stage back of the body thermal cycle power generation system of high temperature to low temperature, after the low-temperature generating system generating of the second level, enter into polygenerations systeme, as utilize waste heat to carry out the application such as drying, refrigeration, heating, and then enter into the hot device 3 of the back of the body, and utilize outside 4 pairs of working mediums of biomass energy to heat, realize the high low temperature multistage back of the body thermal cycle power generation system of two-stage and polygenerations systeme.
Embodiment 6, distributed two-stage multistage back of the body thermal cycle power generation system and polygenerations systeme
As shown in Figure 6, the present embodiment is three high temperature back of the body thermal cycle power generation systems, and three systems carry out distributed power generation in parallel.Working medium after the generating enters into thermal accumulator 5, enter into again low temperature back of the body thermal cycle power generation system, three power generation systems enter into respectively the low-temperature generating system of two parallel connections, waste heat after the low-temperature generating system generating is used for refrigeration, dry, heating, and then enter into the back of the body hot device 3, utilize extra power 4 heated by natural gas to carry on the back the working medium of hot device, realize distributed combined heat and power generation.
According to theory and structure of the present utility model, can design other case study on implementation, as long as meet theory and structure of the present utility model, all belong to enforcement of the present utility model.
Claims (10)
1. carry on the back the thermal cycle power generation system for one kind, comprise with thermal power transfer being energy conversion equipment, generator, the heat exchanger of mechanical energy, thermal accumulator, it is characterized in that: at least one energy conversion equipment, be mechanical energy rear driving generator generating with thermal power transfer, the working medium of discharging heats through a hot device of the back of the body again, and the working medium that is reheated again enters into energy conversion equipment and carries out the circular work generating.
2. back of the body thermal cycle power generation system according to claim 1 is characterized in that: be that the energy conversion equipment of mechanical energy is selected following a kind of with thermal power transfer:
A, heat engine;
B, decompressor;
C, steam turbine.
3. back of the body thermal cycle power generation system according to claim 1 is characterized in that: carry on the back hot device and be at least a in a kind of heat exchanger, boiler or the compressor, carry on the back hot device and utilize the outside energy, the generating working medium is heated to the physical parameter of setting.
4. a multistage back of the body thermal cycle generating and polygenerations systeme, comprise arbitrary described back of the body thermal cycle power generation system among the claim 1-3, it is characterized in that: be provided with at least a low temperature back of the body thermal electric generator group and a high temperature back of the body thermal electric generator group, waste heat after the generating of a power generation system is utilized by another power generation system, realizes the generating of multistage UTILIZATION OF VESIDUAL HEAT IN.
5. multistage back of the body thermal cycle generating according to claim 4 and polygenerations systeme, it is characterized in that: the thermal accumulator that also is provided with different temperatures, before the low-temperature electricity-generating unit enters generator set, the high temperature generator set enter generator set before, high temperature generator set institute exhaust port, in thermal accumulator, be provided with heat-accumulating material.
6. according to claim 4 or 5 described multistage back of the body thermal cycle generating and polygenerations systemes, it is characterized in that: the heat energy that adopts following a kind of mode that high temperature is carried on the back the working medium that the thermal electric generator group discharges is the energy, is used for the generating of low-temperature electricity-generating unit:
A, the working medium that the high temperature generator set is discharged are delivered directly in the low-temperature electricity-generating unit and generate electricity;
B, the working medium of being discharged take the high temperature generator set carry on the back hot device through one group as thermal source, the working medium heating of low-temperature electricity-generating is generated electricity, this carries on the back the generator working medium outlet that hot device is arranged on the high temperature generator set, the temperature end of heat exchanger is reduced to low temperature with the working medium of high temperature generating by high temperature, and the low-temperature end of heat exchanger heats up the working medium of low-temperature electricity-generating or evaporates;
C, the working medium that the high temperature generator set is discharged are transported in the thermal accumulator, undertaken after the heat exchange heat energy being carried out accumulation of heat by one group of heat-exchanger rig and thermal accumulator, be provided with one group of heat exchanger between low-temperature electricity-generating unit and the thermal accumulator, when needs generate electricity, carry out heat exchange by heat exchanger and low-temperature electricity-generating unit and realize generating;
The waste heat of the working medium after the low-temperature generating system generating adopts one of following manner as the energy of high temperature generating:
A, the waste heat behind the low-temperature electricity-generating is mixed the common energy that consists of the high temperature generating with high temperature heat source;
B, the waste heat of low-temperature electricity-generating is heated to the temperature of the thermal source of high temperature solar generating again, carries out the high temperature generating;
C, the waste heat of low-temperature electricity-generating is pressurized to the temperature and pressure of the thermal source of high temperature solar generating again, carries out the high temperature generating;
The waste heat of D, low-temperature electricity-generating directly carries out heat exchange with thermal accumulator, and in thermal accumulator, the working medium with the high temperature generating carries out heat exchange realization UTILIZATION OF VESIDUAL HEAT IN when needed with thermal energy storage.
7. multistage back of the body thermal cycle generating according to claim 4 and polygenerations systeme is characterized in that: high temperature generator set and low-temperature electricity-generating unit can form two independently power generation cycle system generatings, and system can realize every grade of Independent Power Generation; Can realize again the multistage complementary step generating that utilizes, the twin-stage generating can be adopted same generating working medium, also can adopt different generating working mediums, can adopt same power generation cycle, also can adopt different power generation cycle.
8. multistage back of the body thermal cycle generating according to claim 3 and polygenerations systeme is characterized in that: carry on the back the solar low-temperature acquisition system that renewable energy sources in the extra power that hot device utilizes or new energy adopt and adopt following a kind of or its combination:
A, single port solar vacuum heat-collecting pipe;
B, bilateral solar vacuum heat-collecting pipe;
C, solar heat-collection plate;
D, in A, B, C acquisition system, add the acquisition system that the Fresnel diaphotoscope of fresnel reflecting mirror, linear focusing or the point focusing of metal, glass, film reflection or transmittance plate or linear focusing or point focusing forms;
The solar energy high temperature acquisition system adopts following a kind of or its combination:
A, slot type;
B, tower;
D, dish formula;
E, Fresnel mirror.
9. according to claim 1 or 4 described multistage back of the body thermal cycle generating and polygenerations systemes, it is characterized in that: also be provided with Poly-generation equipment, Poly-generation equipment is arranged on generator set working medium exhaust port or is connected with generator set by a heat exchanger that is arranged on the working medium outlet port, the waste heat of the working medium after the generating is used, Poly-generation equipment is connected with generator outlet, connects realization and connects by series, parallel, mixing between a plurality of Poly-generation equipment arrange; Poly-generation equipment is selected from following at least a:
A, heating equipment: a circulation closed system that is formed by heat exchanger or the thermal accumulator that is connected with heat exchanger, the radiator of heating, floor heating pipeline, recycle pump, the high temperature fluid of this heat exchanger is the power generation cycle fluid, realization is carried out heat exchange to the generating working medium, the low temperature heating fluid of heat exchanger by heat exchanger with thermal power transfer to the low temperature heating fluid, the low temperature heating fluid through recycle pump with thermal energy transfer on the radiator, floor heating pipeline of heating, realize the heating to building;
B, domestic hot-water's equipment: formed by heat exchanger or the thermal accumulator that is connected with heat exchanger, water switch, shower nozzle, pump, the high temperature fluid of this heat exchanger is the power generation cycle fluid, realization utilizes the generating working medium, and cryogen heats the domestic hot-water;
C, chiller plant: a circulation closed system that is formed by heat exchanger or the thermal accumulator that is connected with heat exchanger, cooling machine set, recycle pump, the high temperature fluid of this heat exchanger is the power generation cycle fluid, realization is carried out heat exchange to the generating working medium, the cryogenic refrigeration fluid of heat exchanger obtains heat energy by heat exchanger, freezes by cooling machine set;
D, Water boiling equipment: be comprised of the boiling water thermal accumulator, the water switch that carry out heat exchange with heat exchanger, heat exchanger is heated as boiling water with the hot water of boiling water thermal accumulator, and the temperature of the generating working medium of heat exchanger is higher than 100 degree;
E, drying equipment: be comprised of the drying equipment that carries out heat exchange with heat exchanger, heat exchanger provides heat energy for drying equipment;
F, cooking equipment: be comprised of the cooking equipment that carries out heat exchange with heat exchanger, heat exchanger provides heat energy for cooking equipment.
10. multistage back of the body thermal cycle generating according to claim 8 and polygenerations systeme, it is characterized in that: a plurality of solar low-temperature acquisition systems carry out distributed capture and a plurality of solar energy high temperature acquisition system is carried out distributed capture, form a plurality of solar low-temperature heat source systems after gathering, a plurality of low-temperature heat sources and a plurality of low-temperature electricity-generating unit are realized distributed power generation, and the energy of a plurality of high temperature acquisition system collection enters into high-temperature power generation system and carries out distributed power generation; Waste heat after the generating of low-temperature electricity-generating and high temperature generating utilizes mutually, enters into low temperature after the thermal source after the generating is used through refrigeration, dry, heating Poly-generation or the high temperature acquisition system is carried out circulating generation again.
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| CN2012202241259U CN202900338U (en) | 2011-05-17 | 2012-05-17 | Back-pressure-heating circulation power generation and multi-stage back-pressure-heating circulation power generation and multi-generation system |
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| CN201120157790.6 | 2011-05-17 | ||
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865112A (en) * | 2011-05-17 | 2013-01-09 | 北京智慧剑科技发展有限责任公司 | Back thermal cycle power generation, multi-level back thermal cycle power generation and poly-generation system |
| CN115111804A (en) * | 2021-03-18 | 2022-09-27 | 国家电投集团科学技术研究院有限公司 | Combined cooling, heating and power system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102865112A (en) * | 2011-05-17 | 2013-01-09 | 北京智慧剑科技发展有限责任公司 | Back thermal cycle power generation, multi-level back thermal cycle power generation and poly-generation system |
| CN115111804A (en) * | 2021-03-18 | 2022-09-27 | 国家电投集团科学技术研究院有限公司 | Combined cooling, heating and power system |
| CN115111804B (en) * | 2021-03-18 | 2024-01-19 | 国家电投集团科学技术研究院有限公司 | Combined cooling heating and power system |
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