CN105604621A - Organic Rankine Cycle generation device for low-pressure diffused steam and use method for same - Google Patents
Organic Rankine Cycle generation device for low-pressure diffused steam and use method for same Download PDFInfo
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Abstract
The invention relates to the field of engines driven by fluids and specifically relates to an Organic Rankine Cycle generation device for low-pressure diffused steam and a use method for the same. The Organic Rankine Cycle generation device for the low-pressure diffused steam comprises a heat collector (1), an evaporator (2) and a condenser (6) and is characterized by comprising an energy storage working medium pump (3), a water pump (4), an organic working medium condensation pump (5) and a screw expander (7); and the evaporator (2), the organic working medium condensation pump (5), the condenser (6) and the screw expander (7) compose a generator set system. The use method for the Organic Rankine Cycle generation device for the low-pressure diffused steam is characterized in that the method is implemented at the successive steps that heat exchange is carried out between the low-pressure diffused steam and an energy storage working medium; heat exchange is carried out between the energy storage working medium and an organic working medium; and working medium steam works for the screw expander (7). The device provided by the invention has the advantages of high thermal energy use ratio and high adaptability.
Description
Technical field
The present invention relates to by fluid-operated engine art, be specially a kind of organic Rankine circulation electric generating apparatus and using method thereof of diffusing steam for low pressure.
Background technology
Rankine cycle refers to a kind of Ideal Cycle process using steam as working medium, mainly comprises isentropic Compression, isobaric heating, constant entropy expansion and isobaric condensation process. Lang Ken circulation absorbs heat from the external world, by the working medium of its closed loop, conventionally make water heating acting, for steam unit power cycle.
At present, organic Rankine cycle generating system is widely applied in middle-low temperature heat reclaims, maturation possesses skills, working stability, can frequent start-stop etc. advantage, its electricity generation system mainly contains: working medium pump, evaporimeter (residual heat heat-exchanging device), decompressor, the compositions such as condenser, when work, low-pressure liquid organic working medium enters evaporimeter (residual heat heat-exchanging device) through the supercharging of cycle fluid pump, absorb after waste heat, working medium level pressure is evaporated to HTHP refrigerant vapor, then enter expansion unit and promote acting, the generating of drive generator operation, the low-pressure steam of decompressor outlet enters condenser, be condensed into liquid state to the heat release of low level resource, circulation and so forth.
But, the main pooled applications of organic Rankine cycle generating system is being stablized flue gas at present, stablize in vapour system, but the middle low-temperature flue gas waste heat larger in fluctuation ratio reclaims, diffusing steam vapour system is seldom used, at unsettled flue gas, in vapour system, factory as complete in steel industry low-pressure steam pipe network diffuses steam, larger middle-low temperature heat resource fluctuates, when other technique is diffused the applications such as steam, owing to being subject to the influence of fluctuations of rhythm of production, its steam consumption, steam production is fluctuation thereupon all, utilize difficulty large, particularly irregularities diffuse steam, the number of times diffusing and the amount of diffusing are all difficult to control, major part is diffused low-pressure steam generally below 1.0MPa, temperature is saturated vapor or micro-superheated steam, although dilating screw machine energy rapid starting/stopping, adaptive temperature, the localised waving of flow, but the in the situation that of wide fluctuations, will certainly affect the type selecting of unit capacity, system, the frequent start-stop of unit, increase difficulty and the complexity of operational management, can not accomplish that residual heat resources utilization maximizes, also can affect the service life of whole system. therefore, because fluctuation is large, the difficult point of irregularities make higher to the difficulty of UTILIZATION OF VESIDUAL HEAT IN, controllability is relatively poor, be difficult to design suitable utilize scheme, certainly will cause like this residual heat resources to waste in a large number.
Summary of the invention
In order to overcome the defect of prior art, provide one can make full use of cryogenic waste heat resource, to the adaptable engine system of heat source fluctuations, the invention discloses a kind of organic Rankine circulation electric generating apparatus and using method thereof of diffusing steam for low pressure.
The present invention reaches goal of the invention by following technical solution:
A kind of organic Rankine circulation electric generating apparatus that diffuses steam for low pressure, comprise heat collector, evaporimeter and condenser, in heat collector, be provided with heat exchanger first, in evaporimeter, be provided with heat exchanger second, in condenser, be provided with heat exchanger third, it is characterized in that: also comprise energy accumulation working medium pump, water pump, organic working medium condenser pump and screw expander
Evaporimeter, organic working medium condenser pump, condenser and screw expander composition generating set system, the quantity of described generating set system is not less than 1 group;
The steam inlet of heat exchanger first connects low pressure by jet chimney and diffuses vapour source, and the condensation-water drain of heat exchanger first connects the condensate pipe of the water pump of having connected;
The organic working medium entrance of heat exchanger second connects the organic working medium outlet of heat exchanger third in condenser by the organic working medium pipeline of the organic working medium condenser pump of having connected, the working substance steam outlet of heat exchanger second is by the air inlet of working substance steam pipeline connecting screw rod decompressor; The gas outlet of screw expander connects the organic working medium entrance of heat exchanger third in condenser by organic working medium pipeline, the output shaft of screw expander connects the rotating shaft of generator;
The energy accumulation working medium entrance of heat collector connects the energy accumulation working medium outlet of evaporimeter by the energy accumulation working medium pipeline of the energy accumulation working medium pump of having connected, the energy accumulation working medium outlet of heat collector connects the energy accumulation working medium entrance of evaporimeter by energy accumulation working medium pipeline;
The circulating cooling water inlet of condenser connects circulating cooling water source by recirculated cooling water pipeline, and the circulating cooling water out of condenser connects recirculated cooling water pipeline;
In the time that the quantity of generating set system is greater than 1 group, evaporimeter, organic working medium condenser pump, condenser and the screw expander of each group generating set internal system adopt and are connected in series, the energy accumulation working medium outlet of each evaporimeter connects respectively the energy accumulation working medium entrance of heat collector by the energy accumulation working medium pipeline of the energy accumulation working medium pump of having connected, the energy accumulation working medium entrance of each evaporimeter connects respectively the energy accumulation working medium outlet of heat collector by energy accumulation working medium pipeline.
The described organic Rankine circulation electric generating apparatus that diffuses steam for low pressure, is characterized in that: also comprise that energy accumulation working medium pipe temperature meter, low pressure are diffused steam flow instrument and low pressure is diffused vapour tension thermometer,
On the energy accumulation working medium pipeline of the outlet of every connection evaporimeter energy accumulation working medium and energy accumulation working medium pump, be respectively equipped with energy accumulation working medium pipe temperature meter, connection heat exchanger first steam inlet and low pressure are diffused and on the jet chimney of vapour source, are provided with successively that low pressure is diffused steam flow instrument and low pressure is diffused vapour tension thermometer.
The described using method of diffusing the organic Rankine circulation electric generating apparatus of steam for low pressure, is characterized in that: implement successively as follows:
The heat exchanger first of diffusing the low pressure discharging vapour source and diffuse steam and be delivered to through the steam inlet of heat exchanger first by jet chimney heat collector from low pressure, in heat collector, low pressure is diffused steam by heat exchanger first and energy accumulation working medium generation heat exchange, low pressure is diffused steam thermal energy transfer is generated to condensed water after to energy accumulation working medium, and condensed water pumps into corresponding afterheat boiler system or condensate water recovery device from the condensation-water drain of heat exchanger first through condensate pipe with water pump again;
The interior energy accumulation working medium of heat collector has absorbed low pressure and has diffused after the heat of steam transmission, export from the energy accumulation working medium of heat collector the heat exchanger second that enters evaporimeter through energy accumulation working medium pipeline, in evaporimeter, energy accumulation working medium is by heat exchanger second and organic working medium generation heat exchange, energy accumulation working medium is to pumping into heat collector from the energy accumulation working medium outlet of evaporimeter through energy accumulation working medium pipeline with energy accumulation working medium pump after organic working medium release heat, again diffuse steam generation heat exchange with low pressure, so move in circles;
In evaporimeter, organic working medium has absorbed after the heat of energy accumulation working medium transmission, organic working medium level pressure is evaporated to the refrigerant vapor of HTHP, working substance steam enters screw expander from the working substance steam outlet of heat exchanger second through working substance steam pipeline and promotes acting, screw expander drives generator to convert mechanical energy to electric energy output
The working substance steam of HTHP becomes low-pressure steam after screw expander is done work, low-pressure steam is inputted the heat exchanger third of condenser through organic working medium pipeline from the gas outlet of screw expander, recirculated cooling water is the circulating cooling water inlet input condenser from condenser through recirculated cooling water pipeline, in condenser, low-pressure steam is by heat exchanger third and recirculated cooling water generation heat exchange, low-pressure steam generates liquid organic working medium by thermal energy transfer after to recirculated cooling water, liquid organic working medium pumps into the heat exchanger second of evaporimeter again through organic working medium pipeline from the organic working medium outlet of heat exchanger third with organic working medium condenser pump, again with energy accumulation working medium generation heat exchange, so move in circles, recirculated cooling water is discharged through recirculated cooling water pipeline from condenser circulating cooling water out after having absorbed the heat that low-pressure steam transmits.
The described using method of diffusing the organic Rankine circulation electric generating apparatus of steam for low pressure, is characterized in that: when enforcement, also comprise the steps:
While switching the operation of generating set system, mainly judge according to the detection data of energy accumulation working medium thermometer, low pressure is diffused detection data that steam flow instrument and low pressure diffuses vapour tension thermometer for auxiliary judgment, in the time of design, according to the ability of energy accumulation working medium in whole device and configure the corresponding number of units of screw expander, according to device, energy accumulation working medium running temperature (T is set1、T2、...Tn) respective value and adjust variable TM, the energy accumulation working medium temperature of establishing the actual measurement of energy accumulation working medium pipe temperature meter is T0, be provided with altogether n group generating set system, the running temperature of each energy accumulation working medium is set according to each group of generating set system, the running temperature of energy accumulation working medium when 1 group of generating set system operation is set to T1, the running temperature of energy accumulation working medium when 2 groups of generating set systems are moved is jointly set to T2... the running temperature of energy accumulation working medium when n group generating set system is moved is jointly set to Tn, and establish adjust variable be TM, in the time having m group generating set system jointly to move, have T0≤Tm+TM, wherein m≤n; If T0＞Tm+TM, successively increase by 1 group of generating set system and put into operation, make m successively in [1, n] scope, extremely get positive integer greatly from little, until meet T0≤Tm+TMOnly;
Specifically, that is: in the time only having the operation of 1 screw expander, if the observed temperature T of the energy accumulation working medium pipeline now before energy accumulation working medium pump0≤T1+TM, maintain 1 cover generating set system operation; If T0＞T1+TM, increase by 1 screw expander and put into operation and switch to 2 cover generating set systems operations, and judge whether to meet T0≤T2+TM, by that analogy, until meet T0≤Tm+TMThereby, realize the switching of n cover unit, with the generating set that utilizes of maximal efficiency, realize UTILIZATION OF VESIDUAL HEAT IN and maximize.
The waste heat recovery that the present invention diffuses unstable steam applicable to the larger low pressure of fluctuation, can reduce energy waste, reduces the thermal pollution of noise pollution and atmosphere, and the recovery that promotes the middle-low temperature heat resource that fluctuation is larger is significant.
The present invention has following beneficial effect:
1. can use the larger flue gas system of fluctuation, the larger vapour system of diffusing of fluctuation to carry out cogeneration, and avoid the frequent start-stop of unit, keep the relative stability of electricity generation system, realize the maximization of using energy source;
2. simple in structure, easy to maintenance;
3. control logic is clear;
4. can guarantee that equipment working condition is stable, extension device service life, reduce equipment investment;
5. the diversity of the low-temperature flue gas waste heat utilization of resources in can realizing, meets the productive life needs of factory.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Detailed description of the invention
Further illustrate the present invention by specific embodiment below.
Embodiment 1
Diffuse an organic Rankine circulation electric generating apparatus for steam for low pressure, comprise heat collector 1, evaporimeter 2, energy accumulation working medium pump 3, water pump 4, organic working medium condenser pump 5, condenser 6 and screw expander 7, as shown in Figure 1, concrete structure is:
In heat collector 1, be provided with heat exchanger first 11, in evaporimeter 2, be provided with heat exchanger second 21, in condenser 6, be provided with heat exchanger the third 61;
Evaporimeter 2, organic working medium condenser pump 5, condenser 6 and screw expander 7 form generating set system, and the quantity of described generating set system is not less than 1 group;
The steam inlet of heat exchanger first 11 connects low pressure by jet chimney and diffuses vapour source, and the condensation-water drain of heat exchanger first 11 connects the condensate pipe of the water pump 4 of having connected;
The organic working medium pipeline of the organic working medium entrance of heat exchanger second 21 by the organic working medium condenser pump 5 of having connected connects the organic working medium outlet of the interior heat exchanger of condenser 6 the third 61, and the working substance steam outlet of heat exchanger second 21 is by the air inlet of working substance steam pipeline connecting screw rod decompressor 7; The gas outlet of screw expander 7 connects the organic working medium entrance of condenser 6 interior heat exchanger the third 61 by organic working medium pipeline, the output shaft of screw expander 7 connects the rotating shaft of generator 20;
The energy accumulation working medium entrance of heat collector 1 connects the energy accumulation working medium outlet of evaporimeter 2 by the energy accumulation working medium pipeline of the energy accumulation working medium pump 3 of having connected, the energy accumulation working medium outlet of heat collector 1 connects the energy accumulation working medium entrance of evaporimeter 2 by energy accumulation working medium pipeline;
The circulating cooling water inlet of condenser 6 connects circulating cooling water source by recirculated cooling water pipeline, and the circulating cooling water out of condenser 6 connects recirculated cooling water pipeline;
In the time that the quantity of generating set system is greater than 1 group, evaporimeter 2, organic working medium condenser pump 5, condenser 6 and the screw expander 7 of each group generating set internal system adopt and are connected in series, the energy accumulation working medium outlet of each evaporimeter 2 connects respectively the energy accumulation working medium entrance of heat collector 1 by the energy accumulation working medium pipeline of the energy accumulation working medium pump 3 of having connected, the energy accumulation working medium entrance of each evaporimeter 2 connects respectively the energy accumulation working medium outlet of heat collector 1 by energy accumulation working medium pipeline.
For improving the precision of controlling, the present embodiment also comprises that energy accumulation working medium pipe temperature meter 8, low pressure are diffused steam flow instrument 9 and low pressure is diffused vapour tension thermometer 10,
On the energy accumulation working medium pipeline of the 2 energy accumulation working mediums outlets of every connection evaporimeter and energy accumulation working medium pump 3, be respectively equipped with energy accumulation working medium pipe temperature meter 8, connection heat exchanger first 11 steam inlets and low pressure are diffused and on the jet chimney of vapour source, are provided with successively that low pressure is diffused steam flow instrument 9 and low pressure is diffused vapour tension thermometer 10.
When the present embodiment uses, implement successively as follows:
The heat exchanger first 11 of diffusing the low pressure discharging vapour source and diffuse steam and be delivered to through the steam inlet of heat exchanger first 11 by jet chimney heat collector 1 from low pressure, diffuse steam by heat exchanger first 11 and energy accumulation working medium generation heat exchange in the interior low pressure of heat collector 1, low pressure is diffused steam thermal energy transfer is generated to condensed water after to energy accumulation working medium, and condensed water pumps into corresponding afterheat boiler system or condensate water recovery device from the condensation-water drain of heat exchanger first 11 through condensate pipe with water pump 4 again;
The interior energy accumulation working medium of heat collector 1 has absorbed low pressure and has diffused after the heat of steam transmission, export from the energy accumulation working medium of heat collector 1 the heat exchanger second 21 that enters evaporimeter 2 through energy accumulation working medium pipeline, pass through heat exchanger second 21 and organic working medium generation heat exchange at the interior energy accumulation working medium of evaporimeter 2, energy accumulation working medium is to pumping into heat collector 1 from the energy accumulation working medium outlet of evaporimeter 2 through energy accumulation working medium pipeline with energy accumulation working medium pump 3 after organic working medium release heat, again diffuse steam generation heat exchange with low pressure, so move in circles;
The interior organic working medium of evaporimeter 2 has absorbed after the heat of energy accumulation working medium transmission, organic working medium level pressure is evaporated to the refrigerant vapor of HTHP, working substance steam enters screw expander 7 from the working substance steam outlet of heat exchanger second 21 through working substance steam pipeline and promotes acting, screw expander 7 drives generator 20 to convert mechanical energy to electric energy output
The working substance steam of HTHP becomes low-pressure steam after screw expander 7 is done work, low-pressure steam from the gas outlet of screw expander 7 through the heat exchanger of organic working medium pipeline input condenser 6 the third 61, recirculated cooling water is the circulating cooling water inlet input condenser 6 from condenser 6 through recirculated cooling water pipeline, at the interior low-pressure steam of condenser 6 by heat exchanger the third 61 and recirculated cooling water generation heat exchange, low-pressure steam generates liquid organic working medium by thermal energy transfer after to recirculated cooling water, liquid organic working medium exports from the organic working medium of heat exchanger the third 61 the heat exchanger second 21 that pumps into evaporimeter 2 through organic working medium pipeline with organic working medium condenser pump 5 again, again with energy accumulation working medium generation heat exchange, so move in circles, recirculated cooling water is discharged through recirculated cooling water pipeline from condenser 6 circulating cooling water outs after having absorbed the heat that low-pressure steam transmits.
While switching the operation of generating set system, mainly judge according to the detection data of energy accumulation working medium thermometer 8, low pressure is diffused detection data that steam flow instrument 9 and low pressure diffuses vapour tension thermometer 10 for auxiliary judgment, in the time of design, according to the ability of energy accumulation working medium in whole device and configure the corresponding number of units of screw expander 7, according to device, energy accumulation working medium running temperature (T is set1、T2、...Tn) respective value and adjust variable TM, establishing the energy accumulation working medium temperature that energy accumulation working medium pipe temperature meter 8 surveys is T0, be provided with altogether n group generating set system, the running temperature of each energy accumulation working medium is set according to each group of generating set system, the running temperature of energy accumulation working medium when 1 group of generating set system operation is set to T1, the running temperature of energy accumulation working medium when 2 groups of generating set systems are moved is jointly set to T2... the running temperature of energy accumulation working medium when n group generating set system is moved is jointly set to Tn, and establish adjust variable be TM, in the time having m group generating set system jointly to move, have T0≤Tm+TM, wherein m≤n; If T0＞Tm+TM, successively increase by 1 group of generating set system and put into operation, make m successively in [1, n] scope, extremely get positive integer greatly from little, until meet T0≤Tm+TMOnly;
Specifically, that is: in the time only having 1 screw expander 7 to move, if the observed temperature T of the energy accumulation working medium pipeline now before energy accumulation working medium pump 30≤T1+TM, maintain 1 cover generating set system operation; If T0＞T1+TM, increase by 1 screw expander 7 and put into operation and switch to 2 cover generating set systems operations, and judge whether to meet T0≤T2+TM, by that analogy, until meet T0≤Tm+TMThereby, realize the switching of n cover unit, with the generating set that utilizes of maximal efficiency, realize UTILIZATION OF VESIDUAL HEAT IN and maximize.
Claims (4)
1. one kind is diffused the organic Rankine circulation electric generating apparatus of steam for low pressure, comprise heat collector (1), evaporimeter (2) and condenser (6), in heat collector (1), be provided with heat exchanger first (11), in evaporimeter (2), be provided with heat exchanger second (21), in condenser (6), be provided with heat exchanger third (61), it is characterized in that: also comprise energy accumulation working medium pump (3), water pump (4), organic working medium condenser pump (5) and screw expander (7)
Evaporimeter (2), organic working medium condenser pump (5), condenser (6) and screw expander (7) composition generating set system, the quantity of described generating set system is not less than 1 group;
The steam inlet of heat exchanger first (11) connects low pressure by jet chimney and diffuses vapour source, and the condensation-water drain of heat exchanger first (11) connects the condensate pipe of connected water pump (4);
The organic working medium entrance of heat exchanger second (21) connects the organic working medium outlet of the interior heat exchanger third (61) of condenser (6) by the organic working medium pipeline of connected organic working medium condenser pump (5), the working substance steam outlet of heat exchanger second (21) is by the air inlet of working substance steam pipeline connecting screw rod decompressor (7); The gas outlet of screw expander (7) connects the organic working medium entrance of the interior heat exchanger third (61) of condenser (6) by organic working medium pipeline, the output shaft of screw expander (7) connects the rotating shaft of generator (20);
The energy accumulation working medium entrance of heat collector (1) connects the energy accumulation working medium outlet of evaporimeter (2) by the energy accumulation working medium pipeline of connected energy accumulation working medium pump (3), the energy accumulation working medium outlet of heat collector (1) connects the energy accumulation working medium entrance of evaporimeter (2) by energy accumulation working medium pipeline;
The circulating cooling water inlet of condenser (6) connects circulating cooling water source by recirculated cooling water pipeline, and the circulating cooling water out of condenser (6) connects recirculated cooling water pipeline;
In the time that the quantity of generating set system is greater than 1 group, evaporimeter (2), organic working medium condenser pump (5), condenser (6) and the screw expander (7) of each group generating set internal system adopt and are connected in series, the energy accumulation working medium outlet of each evaporimeter (2) connects respectively the energy accumulation working medium entrance of heat collector (1) by the energy accumulation working medium pipeline of connected energy accumulation working medium pump (3), the energy accumulation working medium entrance of each evaporimeter (2) connects respectively the energy accumulation working medium outlet of heat collector (1) by energy accumulation working medium pipeline.
2. the organic Rankine circulation electric generating apparatus that diffuses steam for low pressure as claimed in claim 1, it is characterized in that: also comprise that energy accumulation working medium pipe temperature meter (8), low pressure are diffused steam flow instrument (9) and low pressure is diffused vapour tension thermometer (10)
On the energy accumulation working medium pipeline of every connection evaporimeter (2) energy accumulation working medium outlet and energy accumulation working medium pump (3), be respectively equipped with energy accumulation working medium pipe temperature meter (8), connection heat exchanger first (11) steam inlet and low pressure are diffused and on the jet chimney of vapour source, are provided with successively that low pressure is diffused steam flow instrument (9) and low pressure is diffused vapour tension thermometer (10).
3. using method of diffusing the organic Rankine circulation electric generating apparatus of steam for low pressure as claimed in claim 1 or 2, is characterized in that: implement successively as follows:
The heat exchanger first (11) of diffusing the low pressure discharging vapour source and diffuse steam and be delivered to through the steam inlet of heat exchanger first (11) by jet chimney heat collector (1) from low pressure, in heat collector (1), low pressure is diffused steam by heat exchanger first (11) and energy accumulation working medium generation heat exchange, low pressure is diffused steam thermal energy transfer is generated to condensed water after to energy accumulation working medium, and condensed water uses water pump (4) to pump into corresponding afterheat boiler system or condensate water recovery device from the condensation-water drain of heat exchanger first (11) through condensate pipe again;
The interior energy accumulation working medium of heat collector (1) has absorbed low pressure and has diffused after the heat of steam transmission, export from the energy accumulation working medium of heat collector (1) the heat exchanger second (21) that enters evaporimeter (2) through energy accumulation working medium pipeline, in evaporimeter (2), energy accumulation working medium is by heat exchanger second (21) and organic working medium generation heat exchange, energy accumulation working medium is to pumping into heat collector (1) from the energy accumulation working medium outlet of evaporimeter (2) through energy accumulation working medium pipeline with energy accumulation working medium pump (3) after organic working medium release heat, again diffuse steam generation heat exchange with low pressure, so move in circles,
The interior organic working medium of evaporimeter (2) has absorbed after the heat of energy accumulation working medium transmission, organic working medium level pressure is evaporated to the refrigerant vapor of HTHP, working substance steam enters screw expander (7) from the working substance steam outlet of heat exchanger second (21) through working substance steam pipeline and promotes acting, screw expander (7) drives generator (20) to convert mechanical energy to electric energy output
The working substance steam of HTHP becomes low-pressure steam after screw expander (7) is done work, low-pressure steam is inputted the heat exchanger third (61) of condenser (6) through organic working medium pipeline from the gas outlet of screw expander (7), recirculated cooling water is the circulating cooling water inlet input condenser (6) from condenser (6) through recirculated cooling water pipeline, in condenser (6), low-pressure steam is by heat exchanger third (61) and recirculated cooling water generation heat exchange, low-pressure steam generates liquid organic working medium by thermal energy transfer after to recirculated cooling water, liquid organic working medium uses organic working medium condenser pump (5) to pump into the heat exchanger second (21) of evaporimeter (2) through organic working medium pipeline from the organic working medium outlet of heat exchanger third (61) again, again with energy accumulation working medium generation heat exchange, so move in circles, recirculated cooling water is discharged through recirculated cooling water pipeline from condenser (6) circulating cooling water out after having absorbed the heat that low-pressure steam transmits.
4. using method of diffusing the organic Rankine circulation electric generating apparatus of steam for low pressure as claimed in claim 3, is characterized in that: when enforcement, also comprise the steps:
If the energy accumulation working medium temperature of energy accumulation working medium pipe temperature meter (8) actual measurement is T0, be provided with altogether n group generating set system, the running temperature of each energy accumulation working medium is set according to each group of generating set system, the running temperature of energy accumulation working medium when 1 group of generating set system operation is set to T1, the running temperature of energy accumulation working medium when 2 groups of generating set systems are moved is jointly set to T2... the running temperature of energy accumulation working medium when n group generating set system is moved is jointly set to Tn, and establish adjust variable be TM, in the time having m group generating set system jointly to move, have T0≤Tm+TM, wherein m≤n; If T0＞Tm+TM, successively increase by 1 group of generating set system and put into operation, make m successively in [1, n] scope, extremely get positive integer greatly from little, until meet T0≤Tm+TMOnly.
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