CN104153957A - Novel temperature difference energy collecting cycle power generation device and power generation method thereof - Google Patents
Novel temperature difference energy collecting cycle power generation device and power generation method thereof Download PDFInfo
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Abstract
The invention provides a novel temperature difference energy collecting cycle power generation device and a power generation method of the device. The device comprises a low-boiling-point working medium storing tank, an energy absorbing heat collector, a compressor unit, a multistage turboset and a multistage heat exchange unit, wherein at least two heat exchangers are connected in sequence to form the multistage heat exchange unit, at least three turbines are connected in sequence through reheating pipelines to form the multistage turboset, each reheating pipeline penetrates through any heat exchanger in the heat exchange unit from bottom to top, and the stage number of the heat exchangers through which the reheating pipelines connected with the turbines small in stage number penetrate is not larger than the stage number of the heat exchangers through which the reheating pipelines connected with the turbines large in stage number penetrate. The device is provided with a system having the capacity for independent power generation for operation, the low-boiling-point mediums serve as thermotechnical working mediums, and potential heat of heat source mediums such as water and air in the natural world serves as energy for power generation.
Description
Technical field
The invention belongs to and relate to generation power device field, especially a kind of novel temperature difference cumulative circulation means and electricity-generating method thereof.
Background technique
At present, the energy in the whole world is taking coal, oil, nuclear energy, wind energy, solar energy and waterpower as main substantially.Wherein, coal, oil: coal, oil are a kind of natural mineral reserve, and not only cost of winning is high, freight is large, exploitation all can destroy physical environment and pollutant atmosphere with use, and coal and oil are non-renewable resources, certainly will have exhausted one day; Nuclear energy: the construction investment of nuclear power station is huge, and, also there is huge security risk in nuclear power station, the tsunami causing as the Chernobyl Plant blast of the former Soviet Union and Earthquakes in Japan all cause serious nuclear leakage accident, all brought huge disaster to the mankind; Wind energy, solar energy: common wind energy and the generation mode of solar energy are for directly utilizing wind energy to carry out wind-power electricity generation and directly utilizing solar energy to carry out photovoltaic generation, because unstability and the development investment cost in wind energy and solar energy source are high, determined that wind energy and solar energy use inconvenience, cost of investment is large, value is not high yet; Waterpower: waterpower resourses are a kind of clean energy resourcies, but resource-constrained, cannot meet the demand of human development, and, also influence ecological environment in various degree of the construction of large reservoir, the fragile species extinction even causing, human life's property that a lot of dam-break accidents are given brings huge loss.
Publication number is that the Chinese patent of CN 101906998 A has been announced a kind of multicycle power generation thermodynamic system, comprise the first circulation and the second circulation, the first circulation is improved Lang Ken circulation, the second circulation is supercritical generating circulation, the cyclic process of the second circulation is: high pressure low temperature gas enters the vapour condenser (i.e. the second evaporation unit) of the first circulation, the latent heat of condensation that the water vapour of merit is finished in absorption makes water recovery Cheng Shui, and high pressure low temperature gas heating, volumetric expansion enter the shell side from heat exchange unit; And enter expansion cell with the high temperature and high pressure gas heat exchange in heat exchange unit, generate electricity; High temperature and high pressure gas in heat exchange unit derives from: it is compressed that the gas after the expansion of the second circulation enters compression unit, and pressure raises, volume-diminished, forms high temperature and high pressure gas, enter from heat exchange unit, wherein, the medium of supercritical generating circulation is supercritical medium, for example, ammonia etc.
Although, above-mentioned multicycle power generation thermodynamic system has been realized circulating generation, but, there is following shortcomings in this multicycle power generation thermodynamic system: (1) is in the time that in the second power generation system, the medium that adopts is ammonia, heat for the ammonia steam that generates electricity in the second power generation system has two sources, one is compressor work done, another one is the exhaust steam in steam turbine heat of the first circulation, because compressor work done is only the transfer of energy, and, there is certain energy loss, therefore, the utilization ratio of exhaust steam in steam turbine heat is only the key point that affects the second power generation system generating efficiency, but, because through the second cycling element, the high pressure low temperature steam after heat exchange unit cooling absorbs the heat of hot fluid-water vapor in the first circulation vapour condenser when through the first circulation vapour condenser, this endothermic process utilization be heat exchange principle, the thermal source of the first circulation vapour condenser is necessary for the material of temperature higher than the high pressure low temperature vapor (steam) temperature after heat exchange unit cooling, therefore, the second power generation system (being ammonia steam generating system) is for carrying out heat recovery to the high temperature exhaust steam of the first power generation system (being water vapour power generation system), the application category that is ammonia steam generating system is narrower, economic value is lower, in (2) second power generation systems, ammonia is all the time in steam condition, there is not the conversion between liquid and gas, also just not having liquid transition is the heat absorption reaction in gas process, and liquid become the heat absorption reaction of gas have to high temperature even cryogenic substance carry out the effect of energy-absorbing thermal-arrest, therefore it is limited that, the second power generation cycle absorbs external heat, (3) generating efficiency is low.
Summary of the invention
The present invention aims to provide a kind of novel temperature difference cumulative cycle generating system, it is such as, taking low boiling point working medium (ammonia, nitrogen etc.) as thermal technology's working medium, the potential heat energy of the heat source mediums such as natural water, air is energy, possesses the system of Independent Power Generation service requirement, and, there is the advantages such as reasonable, the outer heat utilization efficiency of heat exchange is high, generating efficiency is high, user cost is low, have a extensive future.
A novel temperature difference cumulative circulation electric generating apparatus I, comprises low boiling working fluid conservation tank, energy-absorbing heat collector, compressor bank, multistage turbine group and Multi-stage heat group of switches;
Multi-stage heat group of switches is communicated with and is formed by least 2 heat exchanger sequence;
Multistage turbine group is in series by reheating pipe road order by least 3 steam turbine;
Each root reheating pipe road is arbitrary heat exchanger setting in penetration heat group of switches from bottom to top all, and, the heat exchanger that the reheating pipe road that the progression of the heat exchanger that the reheating pipe road that the low steam turbine of progression connects runs through does not connect higher than the high steam turbine of progression runs through progression;
The outlet of afterbody heat exchanger is communicated with the entrance of low boiling working fluid conservation tank, and low boiling working fluid conservation tank contains 2 outlets, and one of them outlet is communicated with the entrance of first order steam turbine by an evaporation tubes;
Described evaporation tubes runs through the setting of first order heat exchanger;
The outlet of afterbody steam turbine is communicated with the entrance of compressor bank, another outlet of low boiling working fluid conservation tank with run through the entrance that is arranged at the fluid passage in energy-absorbing heat collector and be communicated with, the outlet of fluid line is communicated with the entrance of compressor bank, and the outlet of compressor bank is communicated with the entrance of first order heat exchanger again;
On energy-absorbing heat collector, be also respectively equipped with heat source medium entrance and heat source medium outlet;
The outlet end of afterbody heat exchanger is provided with the first modulating valve, and the evaporation tubes before first order heat exchanger entrance is provided with adjusting pump, and the evaporation tubes before first order steam turbine or cylinder entrance is provided with the second modulating valve.
The electricity-generating method I of carrying out according to above-mentioned temperature difference cumulative circulation electric generating apparatus I, comprises the following steps:
(1) first and second modulating valve cuts out automatically, starts compressor;
(2) under the effect of compressor, liquid working substance in low boiling working fluid conservation tank is through energy-absorbing heat collector, absorb the latent heat of energy-absorbing heat collector endogenous pyrogen medium, self gasifies, form heat-carrying steam, heat-carrying steam, through compressor compresses, forms high temperature and high pressure steam, enters in first order heat exchanger;
(3) another part liquid working substance in low boiling working fluid conservation tank is by regulating pump directly to enter evaporation tubes, carry out heat exchange with the high temperature and high pressure steam entering in first order heat exchanger, form the overheated generating initial steam of High Temperature High Pressure, generating initial steam pressure >=generating first pressing time, the second modulating valve is opened automatically, generating initial steam enters first order steam turbine and generates electricity, when the pressure < of generating initial steam generates electricity first pressing, the second modulating valve is in closed condition, the exhaust steam of previous stage steam turbine is carried out heat exchange through reheating pipe road and the high temperature and high pressure steam in corresponding heat exchanger, again after heat, the steam turbine that enters rear one-level carries out circulating generation, the exhaust steam of afterbody steam turbine enters compressor bank and compresses, the high temperature and high pressure steam forming, enter first order heat exchanger,
(4) enter the high temperature and high pressure steam order process heat exchanger at different levels in first order heat exchanger, realize self cooling, in the end in one-level heat exchanger, liquefaction is liquid working substance;
(5) in the time that pressure or liquid level exceed setting value, the first modulating valve is opened automatically, highly pressurised liquid working medium in afterbody heat exchanger enters in low boiling working fluid conservation tank, when working medium in afterbody heat exchanger is gaseous state, the first modulating valve is in closed condition;
(6) above-mentioned (2) ~ (5) step that circulates.
The heat-carrying steam that the present invention produces energy-absorbing heat collector heats up by compression, heat exchange condensation is in conjunction with multistage turbine group, make high temperature and high pressure steam that exhaust steam after acting and heat-carrying steam forms after by compressor compresses be directly used in steam turbine power generation as generating initial steam or as the thermal source of generating initial steam indirectly for steam turbine power generation, heat energy in energy-absorbing heat collector endogenous pyrogen medium is collected, for steam turbine power generation, simultaneously, also by the exhaust steam of all the other each level steam turbines except afterbody steam turbine being introduced to corresponding heat exchanger heat again, and, realize the vaporization heat discharging in the exhaust steam liquefaction process that makes afterbody steam turbine and farthest reclaimed the target for generating electricity, thereby, improve greatly the utilization ratio of gaseous working medium heat energy, improve generating efficiency, and, it is simple that electricity generating device I of the present invention has technique, compact structure, invest relatively low, applicable small unit is selected.
Because the thermal source of the generating initial steam of each level steam turbine in temperature difference cumulative circulation electric generating apparatus I of the present invention and electricity-generating method I all derives from heat-exchanger, make heat-exchanger equipment volume huge, and the balance that realizes temperature and pressure in heat-exchanger is comparatively complicated.In order to simplify electricity generating device and operating process, reduce heat-exchanger and contain the interference between hot steam and reheating pipe road, the applicant also provides a kind of novel temperature difference cumulative circulation electric generating apparatus II, and this electricity generating device II is different from electricity generating device I:
Electricity generating device also comprises double evaporation-cooling condenser, in double evaporation-cooling condenser, run through a heat exchange duct is set, one of them outlet of low boiling working fluid conservation tank is communicated with double evaporation-cooling condenser, first order steam turbine order, compressor bank contains 2 outlets, 1 outlet is wherein communicated with heat exchange duct, low boiling working fluid conservation tank order in double evaporation-cooling condenser, other 1 outlet is communicated with the entrance of first order heat exchanger, the outlet end of heat exchange duct is provided with the 3rd modulating valve, and other structures are all identical with the structure of electricity generating device I.
The electricity-generating method II of carrying out according to above-mentioned temperature difference cumulative circulation electric generating apparatus II, comprises the following steps:
(1) first, second and third modulating valve cuts out automatically, starts compressor;
(2) under the effect of compressor, a part of liquid working substance in low boiling working fluid conservation tank is through energy-absorbing heat collector, absorb the latent heat of energy-absorbing heat collector endogenous pyrogen medium, self gasifies, form heat-carrying steam, heat-carrying steam, through compressor compresses, forms high temperature and high pressure steam, and a part enters in first order heat exchanger, remainder enters in the heat exchange duct in double evaporation-cooling condenser;
(3) another part liquid working substance in low boiling working fluid conservation tank is by regulating pump directly to enter double evaporation-cooling condenser, carry out heat exchange with the high temperature and high pressure steam in the heat exchange duct of double evaporation-cooling condenser, under the cooperation control that regulates pump and the second modulating valve, form the overheated generating initial steam of High Temperature High Pressure, generating initial steam pressure >=generating first pressing time, the second modulating valve is opened automatically, generating initial steam enters first order steam turbine and generates electricity, when the pressure < of generating initial steam generates electricity first pressing, the second modulating valve is in closed condition, the exhaust steam of previous stage steam turbine is carried out heat exchange through reheating pipe road and the high temperature and high pressure steam in corresponding heat exchanger, again after heat, the steam turbine that enters rear one-level carries out circulating generation, the exhaust steam of afterbody steam turbine enters compressor bank and compresses, the high temperature and high pressure steam forming, enter the heat exchange duct in double evaporation-cooling condenser,
(4) simultaneously, high temperature and high pressure steam cooling in the heat exchange duct of double evaporation-cooling condenser, condensation becomes liquid working substance, and in the time that pressure or liquid level exceed setting value, the 3rd modulating valve is opened automatically, and the highly pressurised liquid working medium in heat exchange duct enters low boiling working fluid conservation tank;
(5) order of the high temperature and high pressure steam in first order heat exchanger is through heat exchanger at different levels, realize self cooling, in the end in one-level heat exchanger, liquefaction is high-pressure liquid working medium, the first modulating valve is opened, high-pressure liquid working medium in afterbody heat exchanger enters in low boiling working fluid conservation tank, when high-pressure working medium in afterbody heat exchanger is gaseous state, the first modulating valve is in closed condition;
(6) above-mentioned (2) ~ (5) step that circulates.
In order further to simplify generating flow process, reduce the quantity of laying pipeline, reduce the loss of heat as far as possible, the applicant also provides a kind of novel temperature difference cumulative circulation electric generating apparatus III, electricity generating device III is different from electricity generating device I: low boiling working fluid conservation tank is an outlet only, the outlet of low boiling working fluid conservation tank is communicated with the entrance of energy-absorbing heat collector fluid line, compressor bank contains 2 outlets, 2 outlets of compressor bank are communicated with the entrance of first order steam turbine respectively, the entrance of first order heat exchanger is communicated with, the second modulating valve is not set and regulates pump, other structures are all identical with the structure of electricity generating device I.
The electricity-generating method III of carrying out according to above-mentioned temperature difference cumulative circulation electric generating apparatus III, comprises the following steps:
(1) first modulating valve cuts out automatically, starts compressor;
(2) under the effect of compressor, liquid working substance in low boiling working fluid conservation tank is through energy-absorbing heat collector, absorb the latent heat of energy-absorbing heat collector endogenous pyrogen medium, self gasifies, form heat-carrying steam, heat-carrying steam, through compressor compresses, forms high temperature and high pressure steam, and a part enters in first order heat exchanger, remainder enters first order steam turbine power generation;
(3) exhaust steam of previous stage steam turbine is carried out heat exchange through reheating pipe road and the high temperature and high pressure steam in corresponding heat exchanger, again after heat, the steam turbine that enters rear one-level carries out circulating generation, the exhaust steam of afterbody steam turbine enters compressor bank and compresses, the high temperature and high pressure steam forming, enters in first order heat exchanger;
(4) simultaneously, high temperature and high pressure steam order in first order heat exchanger is through heat exchanger at different levels, realize self cooling, in the end in one-level heat exchanger, liquefaction is highly pressurised liquid working medium, in the time that pressure or liquid level exceed setting value, the first modulating valve is opened automatically, highly pressurised liquid working medium in afterbody heat exchanger enters in low boiling working fluid conservation tank, and when the high-pressure working medium in afterbody heat exchanger is gaseous state, the first modulating valve is in closed condition;
(5) above-mentioned (2) ~ (4) step that circulates.
Above-mentioned electricity generating device of the present invention all can do following improvement:
(1) in above-mentioned electricity generating device, owing to may fluctuating from the temperature of afterbody heat exchanger outlet liquid working substance out, and it is proportional from the temperature of afterbody heat exchanger outlet highly pressurised liquid working medium out from the temperature of afterbody heat exchanger outlet liquid working substance out circulates with next round in previous round circulation, therefore, constantly soaring for fear of the temperature from afterbody heat exchanger outlet highly pressurised liquid out, the applicant does following improvement to electricity generating device of the present invention: the outlet of afterbody heat exchanger is communicated with the entrance of low boiling working fluid conservation tank by reflux line, described reflux line runs through the inner setting of energy-absorbing heat collector, by the heat source medium in energy-absorbing heat collector with carry out heat exchange from afterbody heat exchanger outlet highly pressurised liquid working medium out, realize and will be controlled at relative stationary temperature scope from the temperature of afterbody heat exchanger outlet highly pressurised liquid working medium out.
(2) because being affected by energy-absorbing heat collector endogenous pyrogen medium temperature with generating exhaust steam pressure, heat-carrying steam in temperature difference cumulative circulation electric generating apparatus of the present invention and electricity-generating method changes, , heat-carrying steam is difficult to consistent with the temperature and pressure of generating exhaust steam, can directly affect the normal operation of steam turbine, adding that the Processing capacity of existing compressor and the steam consumption of big-and-middle-sized steam turbine exist obviously cannot mate, in big-and-middle-sized system, use heat-exchanger, exist volume too large, complex structure, manufacture maintenance difficulty is large, secondary system evaporation, overheated, repeatedly bleed again hot, the problem that heat of condensation balance difficulty is large, therefore, in order to improve the stability of system heat exchanging process, reliability and controllability, reduce intensity of heat exchange and the manufacture difficulty of heat-exchanger, the applicant does following improvement to electricity generating device of the present invention: compressor bank is made up of 2 compressors, the outlet of the outlet of energy-absorbing heat collector and afterbody steam turbine is communicated with from the entrance of different 2 compressors respectively, certainly, compressor bank also can be for to be made up of 1 compressor, the outlet of the outlet of energy-absorbing heat collector and afterbody steam turbine is with being communicated with the entrance of a compressor.Particularly for temperature difference cumulative circulation electric generating apparatus II, can further improve: compressor bank is made up of 2 compressors, the outlet of arbitrary compressor is communicated with the entrance of first order heat exchanger, and the outlet of residue one compressor is communicated with the entrance of double evaporation-cooling condenser.In specific implementation process, described every compressor can adopt a single compressor, can be also the light duty compressor group being made up of two above compressor parallels.
In addition, in electricity-generating method of the present invention, low boiling point working medium adopts ammonia or nitrogen.The application of these two kinds of low boiling point working mediums is more extensive, obtains easily, and cost is lower.
Multistage turbine group can be communicated with and be formed by reheating pipe road order by least 3 steam turbine, can be also the reheat steam turbine of repeatedly bleeding that contains at least 3 cylinders, and all cylinders of the reheat steam turbine of repeatedly bleeding are communicated with by reheating pipe road order.In the time that reheat steam turbine is repeatedly bled in the employing of multistage turbine group, above-mentioned first order steam turbine all corresponds to the first order cylinder of the reheat steam turbine of repeatedly bleeding, above-mentioned afterbody steam turbine all corresponds to the afterbody cylinder of the reheat steam turbine of repeatedly bleeding, and above-mentioned steam turbine all corresponds to the cylinder of the reheat steam turbine of repeatedly bleeding.
In addition, in the time that energy-absorbing heat collector adopts full liquid vaporizer, volume enough, also can cancel low boiling working fluid conservation tank.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1 temperature difference cumulative circulation electric generating apparatus, and direction shown in arrow is Working fluid flow direction;
Fig. 2 is the structural representation of embodiment 2 temperature difference cumulative circulation electric generating apparatus, and direction shown in arrow is Working fluid flow direction;
Fig. 3 is the structural representation of embodiment 3 temperature difference cumulative circulation electric generating apparatus, and direction shown in arrow is Working fluid flow direction.
Embodiment
Now illustrate by reference to the accompanying drawings embodiments of the present invention:
Embodiment 1
As shown in Figure 1, a kind of novel temperature difference cumulative circulation electric generating apparatus I, comprises working medium conservation tank 1, energy-absorbing heat collector 2, compressor bank 3, multistage turbine group 4 and Multi-stage heat group of switches 5;
Multi-stage heat group of switches 5 is communicated with and is formed by 3 heat exchangers, 50 orders;
Multistage turbine group 4 is in series by reheating pipe road 6 orders by 4 steam turbine 40;
Each root reheating pipe road 6 all from bottom to top in penetration heat group of switches 5 arbitrary heat exchanger 50 arrange, and, the progression of the heat exchanger 50 that the reheating pipe road 6 that the progression of the heat exchanger 50 that the reheating pipe road 6 that the steam turbine 40 that progression is low connects runs through does not connect higher than the high steam turbine 40 of progression runs through.
The outlet of afterbody heat exchanger 502 is communicated with by the first modulating valve 9 with the entrance of low boiling working fluid conservation tank 1, and low boiling working fluid conservation tank 1 contains 2 outlets, and one of them outlet is communicated with the entrance of first order steam turbine 401 by an evaporation tubes 7;
Described evaporation tubes 7 runs through first order heat exchanger 501 and arranges;
The outlet of afterbody steam turbine 502 is communicated with the entrance of compressor bank 3, another outlet of low boiling working fluid conservation tank 1 is communicated with the entrance that runs through the fluid passage 8 being arranged in energy-absorbing heat collector 2, the outlet of fluid line 8 is communicated with the entrance of compressor bank 3, and the outlet of compressor bank 3 is communicated with the entrance of first order heat exchanger 501 again;
On energy-absorbing heat collector 2, be also respectively equipped with heat source medium entrance 21 and heat source medium outlet 22;
The outlet end of afterbody heat exchanger 502 is provided with the first modulating valve 9, and the evaporation tubes 7 before first order heat exchanger 501 entrances is provided with and regulates pump 10, and the evaporation tubes 7 before first order steam turbine 401 entrances is provided with the second modulating valve 11.
The electricity-generating method I of carrying out according to above-mentioned temperature difference cumulative circulation electric generating apparatus I, comprises the following steps:
(1) start front first and second modulating valve (9,11) in automatic closed condition, start compressor bank 3;
(2) under the effect of compressor bank 3, a part of liquid working substance in low boiling working fluid conservation tank 1 is through energy-absorbing heat collector 2, after the latent heat of absorption energy-absorbing heat collector 2 endogenous pyrogen media, gasify, form heat-carrying steam, heat-carrying steam compresses through compressor bank 3, form high temperature and high pressure steam, enter in first order heat exchanger 501;
(3) another part liquid working substance in low boiling working fluid conservation tank 1 is by regulating pump 10 directly to enter evaporation tubes 7, carry out heat exchange with the high temperature and high pressure steam in first order heat exchanger 501, form the overheated generating initial steam of High Temperature High Pressure, generating initial steam pressure >=generating first pressing time, the second modulating valve 11 is opened automatically, making it enter first order steam turbine 401 generates electricity (when the pressure < of generating initial steam generates electricity first pressing, the second modulating valve 11 is in closed condition), the exhaust steam of previous stage steam turbine 40 is carried out heat exchange through reheating pipe road 6 and the high temperature and high pressure steam in corresponding heat exchanger 50, again after heat, the steam turbine 40 that enters rear one-level carries out circulating generation, the exhaust steam of afterbody steam turbine 402 enters compressor bank 3 and compresses, the high temperature and high pressure steam forming, enter in first order heat exchanger 501,
(4) high temperature and high pressure steam in first order heat exchanger 501 passes through heat exchanger at different levels 50 in order, realizes self cooling, is condensed into liquid working substance;
(5) in the time that pressure or liquid level exceed setting value, the first modulating valve 9 is opened automatically, liquid working substance is in afterbody heat exchanger 502 flows into low boiling working fluid conservation tank 1, when high-pressure working medium in afterbody heat exchanger 502 is gaseous state, the first modulating valve 9 is in closed condition;
(6) above-mentioned (2) ~ (5) step that circulates.
The heat-carrying steam that the present invention produces energy-absorbing heat collector 2 heats up by compression, heat exchange condensation is in conjunction with the repeatedly middle heat again of bleeding of multistage turbine group 4, the high temperature and high pressure steam forming after making exhaust steam after acting and heat-carrying steam by compressor bank 3 compression is directly used in as generating initial steam that steam turbine 40 generates electricity or indirectly generates electricity for steam turbine 40 as the thermal source of generating initial steam, heat energy in energy-absorbing heat collector 2 endogenous pyrogen media is collected, generate electricity for steam turbine 40, simultaneously, also by the exhaust steam of all the other each level steam turbines 40 except afterbody steam turbine being introduced to corresponding heat exchanger heat again, and, realize the vaporization heat discharging in the exhaust steam liquefaction process that makes afterbody steam turbine 402 and farthest reclaimed the target for generating electricity, thereby, improve greatly the utilization ratio of gaseous working medium heat energy, and, it is simple that electricity generating device I of the present invention has technique, compact structure, invest relatively low, applicable small unit is selected.
Embodiment 2
Because the thermal source of the generating initial steam of each level steam turbine 40 in temperature difference cumulative circulation electric generating apparatus I of the present invention and electricity-generating method I all derives from heat-exchanger 5, make heat-exchanger 5 equipment volume huge, and the balance that realizes heat-exchanger 5 interior temperature and pressures is comparatively complicated.In order to simplify electricity generating device and operating process, reduce heat-exchanger 5 and contain the interference between hot steam and reheating pipe road, the applicant also provides a kind of novel temperature difference cumulative circulation electric generating apparatus II.
As shown in Figure 2, electricity generating device II of the present invention is different from electricity generating device I: electricity generating device also comprises double evaporation-cooling condenser 12, in double evaporation-cooling condenser 12, run through a heat exchange duct 13 is set, one of them outlet and double evaporation-cooling condenser 12 of low boiling working fluid conservation tank 1, first order steam turbine 401 orders are communicated with, compressor bank 3 contains 2 outlets, heat exchange duct 13 in 1 outlet and double evaporation-cooling condenser 12 wherein, low boiling working fluid conservation tank 1 order is communicated with, other 1 outlet is communicated with the entrance of first order heat exchanger 501, the outlet end of heat exchange duct 13 is provided with the 3rd modulating valve 14, other structures are all identical with electricity generating device I.
The electricity-generating method II of carrying out according to above-mentioned temperature difference cumulative circulation electric generating apparatus II, comprises the following steps:
(1) first, second and third modulating valve (9,11,14), in automatic closed condition, starts compressor bank 4;
(2) under the effect of compressor bank 4, a part of liquid working substance in the conservation tank 1 of low boiling working fluid is through energy-absorbing heat collector 2, absorb the latent heat gasification of energy-absorbing heat collector 2 endogenous pyrogen media, form heat-carrying steam, heat-carrying steam compresses through compressor bank 4, form high-temperature high-pressure overheat steam, a part enters in first order heat exchanger 501, remainder enters in the heat exchange duct 13 in double evaporation-cooling condenser 12;
(3) another part liquid working substance in low boiling working fluid conservation tank 1 is by regulating pump 10 directly to enter double evaporation-cooling condenser 12, carry out heat exchange with the high temperature and high pressure steam in the heat exchange duct 13 of double evaporation-cooling condenser 12, form the overheated generating initial steam of High Temperature High Pressure, generating initial steam pressure >=generating first pressing time, the second modulating valve 11 is opened automatically, making it enter first order steam turbine 401 generates electricity, the pressure < generating first pressing of generating initial steam, the second modulating valve 11 is in automatic closed condition, the exhaust steam of previous stage steam turbine 40 is carried out heat exchange through reheating pipe road 6 and the high temperature and high pressure steam in corresponding heat exchanger 50, again after heat, the steam turbine 40 that enters rear one-level carries out circulating generation, the exhaust steam of afterbody steam turbine 40 enters compressor bank 4 and compresses, the high temperature and high pressure steam forming, enter the heat exchange duct 13 in double evaporation-cooling condenser 12,
(4) simultaneously, high temperature and high pressure steam cooling in the heat exchange duct 13 of double evaporation-cooling condenser 12, be condensed into liquid working substance, in the time that pressure or liquid level exceed setting value, the 3rd modulating valve 14 is opened automatically, and the highly pressurised liquid working medium in heat exchange duct 13 enters low boiling working fluid conservation tank 1;
(5) order of the high temperature and high pressure steam in first order heat exchanger 501 is through heat exchanger 50 at different levels, realize self cooling, be condensed into liquid working substance, the first modulating valve 9 is opened automatically, liquid working substance flows into the conservation tank 1 of low boiling working fluid from afterbody heat exchanger 502, when high-pressure working medium in afterbody heat exchanger 502 is gaseous state, the first modulating valve 9 is in automatic closed condition;
(6) above-mentioned (2) ~ (5) step that circulates.
Embodiment 3
In order further to simplify generating flow process, reduce the quantity of laying pipeline, reduce the loss of heat as far as possible, the applicant also provides a kind of novel temperature difference cumulative circulation electric generating apparatus III, as shown in Figure 3, electricity generating device III is different from electricity generating device I: low boiling working fluid conservation tank 1 is an outlet only, the outlet of low boiling working fluid conservation tank 1 is communicated with the entrance of energy-absorbing heat collector 2 fluid lines 8, compressor bank 3 contains 2 outlets, 2 outlets of compressor bank 3 are communicated with the entrance of first order steam turbine 401 respectively, the entrance of first order heat exchanger 501 is communicated with, the second modulating valve 11 is not set and regulates pump 10.
The electricity-generating method III of carrying out according to above-mentioned temperature difference cumulative circulation electric generating apparatus III, comprises the following steps:
(1) first modulating valve 9 cuts out automatically, starts compressor bank 3;
(2) under the effect of compressor bank 3, liquid working substance in low boiling working fluid conservation tank 1 is through energy-absorbing heat collector 2, after the latent heat that absorbs energy-absorbing heat collector 2 endogenous pyrogen media, gasify, form heat-carrying steam, heat-carrying steam is through compressor compresses, form high-temperature high-pressure overheat steam, a part enters in first order heat exchanger 501, remainder enters first order steam turbine 401 and generates electricity;
(3) exhaust steam of previous stage steam turbine 40 is carried out heat exchange through reheating pipe road 7 and the high temperature and high pressure steam in corresponding heat exchanger 50, again after heat, the steam turbine 40 that enters rear one-level carries out circulating generation, the exhaust steam of afterbody steam turbine 402 enters compressor bank 3 and compresses, the high temperature and high pressure steam forming, enters in first order heat exchanger 501;
(4) simultaneously, high temperature and high pressure steam in first order heat exchanger 501 passes through heat exchanger at different levels 50 in order, realize self cooling, be condensed into liquid, in the time that pressure or liquid level exceed setting value, the first modulating valve 9 is opened automatically, liquid working substance flows into low boiling working fluid conservation tank 1 from afterbody heat exchanger 502, and when the high-pressure working medium in afterbody heat exchanger is gaseous state, the first modulating valve 9 is in automatic closed condition;
(5) above-mentioned (2) ~ (4) step that circulates.
Multistage turbine group 4 can be communicated with and be formed by reheating pipe road order by least 3 steam turbine 40, can be also the reheat steam turbine of repeatedly bleeding that contains at least 3 cylinders, and all cylinders of the reheat steam turbine of repeatedly bleeding are communicated with by reheating pipe road order.When multistage turbine group 4 adopts while repeatedly bleeding reheat steam turbine, embodiment 1 ~ 3 first order steam turbine 401 all corresponds to the first order cylinder of the reheat steam turbine of repeatedly bleeding, embodiment 1 ~ 3 afterbody steam turbine 402 all corresponds to the afterbody cylinder of the reheat steam turbine of repeatedly bleeding, and embodiment 1 ~ 3 steam turbine 40 all corresponds to the cylinder of the reheat steam turbine of repeatedly bleeding.
It should be noted that, steam turbine 40 quantity that steam turbine set 4 of the present invention adopts or the hot number of times of bleeding again of the reheat steam turbine of repeatedly bleeding, to determine according to the generating first pressing of initial steam and heat-carrying steam or exhaust steam pressure and for the needs of realizing working substance steam condensation liquefaction, be generally more than 2 times, be not limited to 4 in above-described embodiment 1 ~ 3, in like manner, heat exchanger 50 quantity that heat-exchanger 5 adopts are to be determined by the quantity of steam turbine 40 or the technical parameter of bleed again hot number of times and compressor etc., are not limited to 3 in above-described embodiment 1 ~ 3.
Show " in system running according to 72 ~ 79 pages of data of the 13rd the 2nd chapter of Beijing first edition mechanical engineering manual in October nineteen eighty-two, multistage air exhausting type back pressure turbine efficiency is generally 73 ~ 87%, the mechanical efficiency such as gearbox 96.5 ~ 99%, generator efficiency is greater than 93 ~ 98.5%, Large-scale Reciprocating Compressor efficiency is about 92%, two-stage is 84.6%, vaporizer, heat exchanger and various throttle valve, the system pressures such as pipeline and thermal loss are no more than 3%, and in the situation of other factors, all system overall efficiency should be between 37 ~ 55%, both the heat energy that kilowatt number of system electromotive power output had equaled interior acquisition per hour is multiplied by 37 ~ 55% divided by 860 total.
The applicant is taking ammonia as thermal technology's working medium, using the water of 25 DEG C in the situation of the heat source medium of energy-absorbing heat collector 2, while adopting embodiment's 3 electricity generating devices and electricity-generating method to generate electricity, calculate heat energy, the generated energy that every 1 cubic metre of ammonia steam draws from energy collecting heat absorber and the efficiency that is finally converted into electric energy thereof.Specific as follows:
(1) setting parameter:
Taking heat-carrying ammonia both vapor compression ratio as 1
4, the exhaust steam pressure of afterbody steam turbine is p
0=10.2 kgf/cm
2, exhaust steam compression ratio 1
4, the compression ratio of compressor is 1
4.Look into the 14th 79-270 page of Beijing first edition mechanical engineering manual and draw, 25 DEG C of saturated ammonia steam absolute pressure p
0=10.2 kgf/cm
2, vapor density ρ "=7.795kg/m
3, latent heat of vaporization r
1=278.6kcal/ kg, as piston compressor air inlet p
0=10.2, exhaust p
1=4 × 10.2=40.8 kgf/cm
2, when L=1 m, compression distance L
1=0.75 m, exhaust distance L
2=0.25 m, S=10000cm
2, V=1m
3, mechanical equivalent of heat A=427, electric equivalent of calorie λ=860, the applicant adopts Q
0represent initial thermal energy, W
0represent the theoretical compression energy that heat-carrying ammonia both vapor compression consumes, W
1represent the actual compression energy that heat-carrying ammonia both vapor compression consumes, W
01represent the theoretical compression energy of the exhaust steam compression consumption of afterbody steam turbine, W
11represent the actual compression energy of the exhaust steam compression consumption of afterbody steam turbine, get: electric equivalent of calorie λ=860, turbine efficiency η
1=0.73, compressor efficiency η
2=0.92, system heat exchange efficiency η
3=0.97, mechanical speed change efficiency eta
4=0.965, generator efficiency η
5=0.93.
(2) energy calculates:
25 DEG C time, in energy-absorbing heat collector, liquefied ammonia is evaporated to heat-carrying steam after absorbing heat source medium, the initial thermal energy that the ammonia steam of every 1 cubic metre obtains:
1 cubic metre of initial thermal energy that saturated heat-carrying ammonia steam obtains:
Q
0=V ρ " r
1/ λ=0.5 × 7.795 × 278.6 ÷ 860=1.26 kilowatt hour;
The approximation theory compression energy that heat-carrying ammonia both vapor compression consumes:
W
0≈ [(p
0+ p
1)/2SL
1+ p
1sL
2]/A/λ=[(10.2+40.8) ÷ 2 × 10000 × 0.75+40.8 × 10000 × 0.25] ÷ 427 ÷ 860=0.798 kilowatt hours;
The approximate actual compression energy that heat-carrying ammonia both vapor compression consumes:
W
1≈ W
0/ η
2=0.798 ÷ 0.82=0.867 kilowatt hour;
The approximation theory compression energy that the exhaust steam compression of afterbody steam turbine consumes:
W
01≈ [(p
0+ p
1)/2SL
1+ p
1sL
2]/A/ λ ≈ [(10.2+40.8) ÷ 2 × 10000 × 0.75+40.8 × 10000 × 0.25] ÷ 427 ÷ 860=0.798 kilowatt hours;
The approximate actual compression energy that the exhaust steam compression of afterbody steam turbine consumes:
W
11≈ W
01/ η
2=0.798 ÷ 0.92=0.867 kilowatt hour;
Turbine shaft output energy: W
2=(Q
0+ W
0+ W
01) η
1η
3η
4
=(2.52+0.798+0.798) 0.73 × 0.97 × 0.965=2.813 kilowatt hour;
Steam turbine output electric energy: W
3=(W
2-W
1-W
11) η
5
=(2.813-0.867-0.867) × 0.93=1.003 kilowatt hour;
According to above theoretical checking computation results system initial thermal energy conversion efficiency:
=?W
3/Q
0·100%=1.003÷2.52×100%=39.82%。
In theory, draw every 1 cubic metre of pressure 10.2 kgf/cm according to above-mentioned energy method computations
2, density 7.795kg/m
3the evaporation heat energy that absorbs from energy collecting heat absorber of saturated ammonia steam, deduct the electric energy that can produce 1.003 kilowatt hours after the efficiency of each system link, its comprehensive thermoelectric conversion efficiency is 39.82%, is considerable.
Embodiment 1 or 2 is identical with embodiment 3 energy conversion principle, embodiment 3 that different is is to be directly generating initial steam taking the high-temperature high-pressure overheat steam after compression, is relatively applicable to adopting the power generation system of the low boiling point working medium (for example ammonia) that saturation pressure and density are higher in normal temperature situation.Be thermal source and embodiment 1 or 2 is high-temperature high-pressure overheat steams after compressing, the low boiling working fluid steam that adopts double evaporation-cooling is generating steam, increase a double evaporation-cooling link, but it can change the pressure parameter of compressed steam, obtain different from embodiment 3, and wider generating vapor pressure parameter, can meet characteristic and the requirement of more low boiling working fluids, working medium application area is wider.In the case of not considering the heat exchange efficiency of double evaporation-cooling, embodiment 1 and 2 is identical with embodiment 3 output power and thermoelectric conversion efficiency.
Above-mentioned electricity generating device of the present invention all can do following improvement:
(1) in above-mentioned electricity generating device, because the temperature of the liquid working substance that exports out from afterbody heat exchanger 502 likely can fluctuate, and the temperature of the highly pressurised liquid working medium that exports out from afterbody heat exchanger 502 temperature of the highly pressurised liquid working medium that exports out from afterbody heat exchanger 502 in previous round circulation and next round circulation is proportional, therefore, temperature for fear of the highly pressurised liquid working medium that exports out from afterbody heat exchanger 502 is constantly soaring, the applicant does following improvement to electricity generating device of the present invention: the outlet of afterbody heat exchanger 502 is communicated with the entrance of low boiling working fluid conservation tank 1 by reflux line 15, described reflux line 15 runs through inner arrange (as shown in Fig. 1 ~ 3) of energy-absorbing heat collector 2, carry out heat exchange by the heat source medium in energy-absorbing heat collector 2 and the highly pressurised liquid working medium that exports out from afterbody heat exchanger 502, realize the object that the temperature of the highly pressurised liquid working medium that exports out from afterbody heat exchanger 502 is controlled to metastable temperature range.
(2) because being affected by energy-absorbing heat collector 2 endogenous pyrogen medium temperatures with generating exhaust steam pressure, heat-carrying steam in temperature difference cumulative circulation electric generating apparatus of the present invention and electricity-generating method changes, , heat-carrying steam is difficult to consistent with the temperature and pressure of generating exhaust steam, can directly affect the normal operation of steam turbine 40, adding that the Processing capacity of existing compressor 30 and the steam consumption of big-and-middle-sized steam turbine exist does not obviously mate, in big-and-middle-sized system, use heat-exchanger 5, exist volume too large, complex structure, manufacture maintenance difficulty is large, secondary system evaporation, overheated, repeatedly bleed again hot, the problem that heat of condensation balance difficulty is large, therefore, in order to improve the stability of system heat exchanging process, reliability and controllability, reduce intensity of heat exchange and the manufacture difficulty of heat-exchanger 4, the applicant does following improvement to electricity generating device of the present invention: compressor bank 3 is made up of 2 compressors 31, the outlet of the outlet of energy-absorbing heat collector 2 and afterbody steam turbine 502 is communicated with (as shown in Fig. 1 ~ 3) from the entrance of different 2 compressors 31 respectively, certainly, compressor bank 3 also can be for to be made up of a compressor 31, the entrance that the outlet of the outlet of energy-absorbing heat collector 2 and afterbody steam turbine 502 is same as a compressor 31 is communicated with.Particularly for temperature difference cumulative circulation electric generating apparatus II, also can improve as follows: compressor bank 3 is made up of 2 compressors 31, the outlet of arbitrary compressor 31 is communicated with the entrance of first order heat exchanger 501, and the outlet of residue one compressor 31 is communicated with (as shown in Figure 2) with the entrance of double evaporation-cooling condenser 12.In specific implementation process, described every compressor 31 can adopt a single compressor, can be also the light duty compressor group being made up of two above compressor parallels, increases the overall pump-down process ability of compressor bank 3.
In addition, the low boiling working fluid in electricity-generating method of the present invention generally adopts ammonia or nitrogen.This two media is market-oriented product, obtains easily, cost-saving.Also can adopt other medium, as: other low boiling working fluids such as ethane, ethene, propane, propylene, methyl alcohol, ethanol, carbon dioxide.
There is in the prior art once the bleed unit of reheat steam turbine of employing, its bleed again method of heat is that the exhaust steam after high-pressure cylinder acting is all extracted out and guided to boiler heat again, object is the enthalpy (heat load) in order to improve steam, in the time not changing system vapor recycle amount, improve generated energy, the prerequisite that increases generated energy is that boiler fired coal increases.Steam turbine uses the hot prior object of repeatedly bleeding again in the present invention, be to coordinate multiple corresponding heat exchangers by the heat of repeatedly bleeding again with steam, meet evaporation overheated after needs while realizing compressed steam condensation unnecessary heat energy be directly used in steam turbine 40 and do work, realize system heat energy recycling and working medium circulation utilization, invest the meaning of renewal to the thermal process of bleeding again of multistage turbine group 4.
Claims (10)
1. a novel temperature difference cumulative circulation electric generating apparatus, is characterized in that:
Comprise low boiling working fluid conservation tank, energy-absorbing heat collector, compressor bank, multistage turbine group and Multi-stage heat group of switches;
Multi-stage heat group of switches is communicated with and is formed by least 2 heat exchanger sequence;
Multistage turbine group is in series by reheating pipe road order by least 3 steam turbine or is the multistage reheat steam turbine of bleeding that contains at least 3 cylinders, and all cylinders of the multistage reheat steam turbine of bleeding are communicated with by reheating pipe road order;
Each root reheating pipe road is arbitrary heat exchanger setting in penetration heat group of switches from bottom to top all, and, the heat exchanger that the reheating pipe road that the progression of the heat exchanger that the reheating pipe road that the steam turbine that progression is low or cylinder connect runs through does not connect higher than the high steam turbine of progression or cylinder runs through progression;
The outlet of afterbody heat exchanger is communicated with the entrance of low boiling working fluid conservation tank, and low boiling working fluid conservation tank contains 2 outlets, and one of them outlet is communicated with the entrance of first order steam turbine or cylinder by an evaporation tubes;
Described evaporation tubes runs through the setting of first order heat exchanger;
The outlet of afterbody steam turbine or cylinder is communicated with the entrance of compressor bank, another outlet of low boiling working fluid conservation tank with run through the entrance that is arranged at the fluid passage in energy-absorbing heat collector and be communicated with, the outlet of fluid line is communicated with the entrance of compressor bank, and the outlet of compressor bank is communicated with the entrance of first order heat exchanger again;
On energy-absorbing heat collector, be also respectively equipped with heat source medium entrance and heat source medium outlet;
The outlet end of afterbody heat exchanger is provided with the first modulating valve, and the evaporation tubes before first order heat exchanger entrance is provided with adjusting pump, and the evaporation tubes before first order steam turbine or cylinder entrance is provided with the second modulating valve.
2. according to a kind of novel temperature difference cumulative circulation electric generating apparatus described in power 1, it is characterized in that, electricity generating device also comprises double evaporation-cooling condenser, in double evaporation-cooling condenser, run through a heat exchange duct is set, one of them outlet and double evaporation-cooling condenser of low boiling working fluid conservation tank, first order steam turbine or cylinder sequence are communicated with, compressor bank contains 2 outlets, heat exchange duct in 1 outlet and double evaporation-cooling condenser wherein, low boiling working fluid conservation tank order is communicated with, other 1 outlet is communicated with the entrance of first order heat exchanger, the outlet end of heat exchange duct is provided with the 3rd modulating valve, other structures are all identical with the structure of electricity generating device claimed in claim 1.
3. according to a kind of novel temperature difference cumulative circulation electric generating apparatus described in power 1, it is characterized in that, low boiling working fluid conservation tank is an outlet only, the outlet of low boiling working fluid conservation tank is communicated with the entrance of energy-absorbing heat collector fluid line, compressor bank contains 2 outlets, 2 outlets of compressor bank are communicated with the entrance of first order steam turbine or cylinder respectively, the entrance of first order heat exchanger is communicated with, the second modulating valve is not set and regulates pump, other structures are all identical with the structure of electricity generating device claimed in claim 1.
4. according to a kind of novel temperature difference cumulative circulation electric generating apparatus described in any one in claim 1 ~ 3, it is characterized in that: the outlet of afterbody heat exchanger is communicated with the entrance of low boiling working fluid conservation tank by reflux line, described reflux line runs through the inner setting of energy-absorbing heat collector.
5. according to a kind of novel temperature difference cumulative circulation electric generating apparatus described in any one in claim 1 ~ 4, it is characterized in that: described compressor bank is made up of an above compressor, the outlet of the outlet of energy-absorbing heat collector and afterbody steam turbine or cylinder is with from a compressor or be communicated with the entrance of different two compressors respectively.
6. according to the described a kind of novel temperature difference cumulative circulation electric generating apparatus of claim 2, it is characterized in that: described compressor bank is made up of 2 compressors, the outlet of the outlet of energy-absorbing heat collector and afterbody steam turbine or cylinder is communicated with from the entrance of different 2 compressors respectively, the outlet of arbitrary compressor is communicated with the entrance of first order heat exchanger, and the outlet of residue one compressor is communicated with the entrance of double evaporation-cooling condenser.
7. the electricity-generating method carrying out according to the described a kind of novel temperature difference cumulative circulation electric generating apparatus of claim 1, is characterized in that, comprises the following steps:
(1) first and second modulating valve cuts out automatically, starts compressor;
(2) under the effect of compressor, liquid working substance in low boiling working fluid conservation tank is through energy-absorbing heat collector, absorb the latent heat of energy-absorbing heat collector endogenous pyrogen medium, self gasifies, form heat-carrying steam, heat-carrying steam, through compressor compresses, forms high temperature and high pressure steam, enters in first order heat exchanger;
(3) another part liquid working substance in low boiling working fluid conservation tank is by regulating pump directly to enter evaporation tubes, carry out heat exchange with the high temperature and high pressure steam entering in first order heat exchanger, form the overheated generating initial steam of High Temperature High Pressure, generating initial steam pressure >=generating first pressing time, the second modulating valve is opened automatically, generating initial steam enters first order steam turbine or cylinder generates electricity, when the pressure < of generating initial steam generates electricity first pressing, the second modulating valve is in closed condition, the exhaust steam of previous stage steam turbine or cylinder is carried out heat exchange through reheating pipe road and the high temperature and high pressure steam in corresponding heat exchanger, again after heat, the steam turbine or the cylinder that enter rear one-level carry out circulating generation, the exhaust steam of afterbody steam turbine or cylinder enters compressor bank and compresses, the high temperature and high pressure steam forming, enter first order heat exchanger,
(4) enter the high temperature and high pressure steam order process heat exchanger at different levels in first order heat exchanger, realize self cooling, in the end in one-level heat exchanger, liquefaction is liquid working substance;
(5) in the time that pressure or liquid level exceed setting value, the first modulating valve is opened automatically, highly pressurised liquid working medium in afterbody heat exchanger enters in low boiling working fluid conservation tank, when working medium in afterbody heat exchanger is gaseous state, the first modulating valve is in closed condition;
(6) above-mentioned (2) ~ (5) step that circulates.
8. the electricity-generating method carrying out according to the described a kind of novel temperature difference cumulative circulation electric generating apparatus of claim 2, comprises the following steps:
(1) first, second and third modulating valve cuts out automatically, starts compressor;
(2) under the effect of compressor, a part of liquid working substance in low boiling working fluid conservation tank is through energy-absorbing heat collector, absorb the latent heat of energy-absorbing heat collector endogenous pyrogen medium, self gasifies, form heat-carrying steam, heat-carrying steam, through compressor compresses, forms high temperature and high pressure steam, and a part enters in first order heat exchanger, remainder enters in the heat exchange duct in double evaporation-cooling condenser;
(3) another part liquid working substance in low boiling working fluid conservation tank is by regulating pump directly to enter double evaporation-cooling condenser, carry out heat exchange with the high temperature and high pressure steam in the heat exchange duct of double evaporation-cooling condenser, under the cooperation control that regulates pump and the second modulating valve, form the overheated generating initial steam of High Temperature High Pressure, generating initial steam pressure >=generating first pressing time, the second modulating valve is opened automatically, generating initial steam enters first order steam turbine or cylinder generates electricity, when the pressure < of generating initial steam generates electricity first pressing, the second modulating valve is in closed condition, the exhaust steam of previous stage steam turbine or cylinder is carried out heat exchange through reheating pipe road and the high temperature and high pressure steam in corresponding heat exchanger, again after heat, the steam turbine or the cylinder that enter rear one-level carry out circulating generation, the exhaust steam of afterbody steam turbine or cylinder enters compressor bank and compresses, the high temperature and high pressure steam forming, enter the heat exchange duct in double evaporation-cooling condenser,
(4) simultaneously, high temperature and high pressure steam cooling in the heat exchange duct of double evaporation-cooling condenser, condensation becomes liquid working substance, and in the time that pressure or liquid level exceed setting value, the 3rd modulating valve is opened automatically, and the highly pressurised liquid working medium in heat exchange duct enters low boiling working fluid conservation tank;
(5) order of the high temperature and high pressure steam in first order heat exchanger is through heat exchanger at different levels, realize self cooling, in the end in one-level heat exchanger, liquefaction is high-pressure liquid working medium, the first modulating valve is opened, high-pressure liquid working medium in afterbody heat exchanger enters in low boiling working fluid conservation tank, when high-pressure working medium in afterbody heat exchanger is gaseous state, the first modulating valve is in closed condition;
(6) above-mentioned (2) ~ (5) step that circulates.
9. the electricity-generating method carrying out according to the described a kind of novel temperature difference cumulative circulation electric generating apparatus of claim 3, comprises the following steps:
(1) first modulating valve cuts out automatically, starts compressor;
(2) under the effect of compressor, liquid working substance in low boiling working fluid conservation tank is through energy-absorbing heat collector, absorb the latent heat of energy-absorbing heat collector endogenous pyrogen medium, self gasifies, form heat-carrying steam, heat-carrying steam, through compressor compresses, forms high temperature and high pressure steam, and a part enters in first order heat exchanger, remainder enters first order steam turbine or cylinder generating;
(3) exhaust steam of previous stage steam turbine or cylinder is carried out heat exchange through reheating pipe road and the high temperature and high pressure steam in corresponding heat exchanger, again after heat, the steam turbine or the cylinder that enter rear one-level carry out circulating generation, the exhaust steam of afterbody steam turbine or cylinder enters compressor bank and compresses, the high temperature and high pressure steam forming, enters in first order heat exchanger;
(4) simultaneously, high temperature and high pressure steam order in first order heat exchanger is through heat exchanger at different levels, realize self cooling, in the end in one-level heat exchanger, liquefaction is highly pressurised liquid working medium, in the time that pressure or liquid level exceed setting value, the first modulating valve is opened automatically, highly pressurised liquid working medium in afterbody heat exchanger enters in low boiling working fluid conservation tank, and when the high-pressure working medium in afterbody heat exchanger is gaseous state, the first modulating valve is in closed condition;
(5) above-mentioned (2) ~ (4) step that circulates.
10. according to a kind of novel temperature difference cumulative circulating generation method described in claim 7 ~ 9, it is characterized in that: described low boiling point working medium is ammonia or nitrogen.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696178A (en) * | 2015-03-10 | 2015-06-10 | 贾守训 | Self-circulation energy-saving temperature difference engine |
| CN105065070A (en) * | 2015-08-24 | 2015-11-18 | 王永清 | Novel exhaust steam reheating pressurizing circulatory power generation method |
| CN111712620A (en) * | 2018-03-01 | 2020-09-25 | 小林隆逸 | Power generation system with working medium characteristic difference and power generation method with working medium characteristic difference using power generation system |
| CN112870745A (en) * | 2019-11-29 | 2021-06-01 | 笹仓机械工程有限公司 | Device and method for separating foreign substances |
-
2014
- 2014-08-22 CN CN201410416597.8A patent/CN104153957A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104696178A (en) * | 2015-03-10 | 2015-06-10 | 贾守训 | Self-circulation energy-saving temperature difference engine |
| CN105065070A (en) * | 2015-08-24 | 2015-11-18 | 王永清 | Novel exhaust steam reheating pressurizing circulatory power generation method |
| CN111712620A (en) * | 2018-03-01 | 2020-09-25 | 小林隆逸 | Power generation system with working medium characteristic difference and power generation method with working medium characteristic difference using power generation system |
| CN112870745A (en) * | 2019-11-29 | 2021-06-01 | 笹仓机械工程有限公司 | Device and method for separating foreign substances |
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Application publication date: 20141119 |