CN204024736U - ORC (organic Rankine cycle) low-temperature generating and the steam turbine generation electricity generating device that intercouples - Google Patents
ORC (organic Rankine cycle) low-temperature generating and the steam turbine generation electricity generating device that intercouples Download PDFInfo
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- CN204024736U CN204024736U CN201420255282.5U CN201420255282U CN204024736U CN 204024736 U CN204024736 U CN 204024736U CN 201420255282 U CN201420255282 U CN 201420255282U CN 204024736 U CN204024736 U CN 204024736U
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Abstract
The utility model relates to the generating of a kind of ORC (organic Rankine cycle) low-temperature and the steam turbine generation electricity generating device that intercouples, comprise the steam turbine circulatory system, first order organic rankine cycle system and second level organic rankine cycle system, the described steam turbine circulatory system comprises the thermal transition device connecting by turbine circulating line successively, turbine power generation unit, the first vaporizer and turbine working medium pump, described first order organic rankine cycle system comprises described the first vaporizer connecting by the first Rankine cycle pipeline successively, the first screw rod generator set, the second vaporizer and the first compression pump, described the first Rankine cycle pipeline is also communicated with the heat release medium channel of described the second vaporizer, described second level organic rankine cycle system comprises described the second vaporizer connecting by the second Rankine cycle pipeline successively, the second screw rod generator set and the second compression pump.This coupling power-generating apparatus can effectively utilize heat in tail gas and steam to carry out step generating, reduces environmental pollution simultaneously.
Description
Technical field
The utility model relates to the generating of a kind of ORC (organic Rankine cycle) low-temperature and the steam turbine generation electricity generating device that intercouples.
Background technique
In large-size chemical, thermoelectricity plant and underground heat, in tail gas and steam, containing amount of heat, if be discharged in atmosphere, be actually the waste to resource, although there are various cogeneration technologies at present, but only rely on single device for generating power by waste heat, can not make these energy obtain fully and effectively utilizing.
Summary of the invention
The problem existing in order to solve prior art, the utility model provides a kind of ORC (organic Rankine cycle) low-temperature generating and steam turbine generation efficient coupling electricity generating device/system, can effectively utilize the heat in tail gas and steam to carry out step generating, reduce the pollution to environment simultaneously.
The utility model adopts:
The generating of a kind of ORC (organic Rankine cycle) low-temperature and the steam turbine generation electricity generating device that intercouples, comprise the steam turbine circulatory system, first order organic rankine cycle system and second level organic rankine cycle system, the described steam turbine circulatory system comprises the first compression pump (turbine working medium pump) connecting by turbine circulating line successively, thermal transition device, turbine power generation unit, first order organic Rankine second vaporizer that circulates, first order organic Rankine circulate the first vaporizer and turbine liquid container/case, the heat-absorbing medium channel connection of described turbine circulating line and described thermal transition device, be communicated with the circulate heat release medium channel of the second vaporizer and the first vaporizer of described first order organic Rankine, described first order organic rankine cycle system comprises the described first order organic Rankine circulation organic working medium compression pump connecting by first order organic Rankine circulating line successively, the first vaporizer, the second vaporizer, the first screw rod generator set, second level organic rankine cycle system the second vaporizer, second level organic rankine cycle system the first vaporizer, first order organic rankine cycle system condenser and first order organic Rankine working medium storage tank/case, described first order organic Rankine circulating line and described first order organic Rankine the circulate heat-absorbing medium channel connection of the second vaporizer of the first vaporizer and described first order organic Rankine that circulates, be communicated with second level organic Rankine the circulate heat release medium channel of the first vaporizer of the second vaporizer and second level organic Rankine that circulates, described second level organic rankine cycle system comprises the described second level organic Rankine cycle fluid compression pump connecting by the second Rankine cycle pipeline successively, second level organic Rankine first vaporizer that circulates, second level organic Rankine second vaporizer that circulates, the second screw rod generator set, second level organic Rankine circulating preheater, second level organic Rankine cycle condenser and second level organic Rankine working medium liquid container/case, described second level organic Rankine circulating line and described second level organic Rankine the circulate heat-absorbing medium channel connection of the second vaporizer of the first vaporizer and second level organic Rankine that circulates.
Preferably, the condenser of described first order organic rankine cycle system is between the first vaporizer of described second level organic rankine cycle system and the working medium liquid container/case of described first order organic rankine cycle system, and the condenser of described second level organic rankine cycle system is between the working medium liquid container/case of screw rod generator set, second level organic rankine cycle system condenser and the described second level organic rankine cycle system of described second level organic rankine cycle system.
Preferably, between the described steam turbine circulatory system and first order organic rankine cycle system, be also provided with the first vaporizer of first order organic rankine cycle system, the heat release medium channel of the first vaporizer of described first order organic rankine cycle system is serially connected on second vaporizer and the turbine circulating line between described turbine working medium compression pump of described first order organic Rankine circulation, the heat-absorbing medium passage of the first vaporizer of described first order organic rankine cycle system is serially connected on the first order organic rankine cycle system organic working medium compression pump and the first order organic Rankine circulating line between described first order organic rankine cycle system the second vaporizer of described first order organic rankine cycle system.
Further, between described first order organic Rankine cycle generating system and second level organic rankine cycle system, be also provided with the first vaporizer of second level organic rankine cycle system, the heat release medium channel of the first vaporizer of described second level organic rankine cycle system is serially connected on the first order organic Rankine circulating line between described second level organic rankine cycle system the second vaporizer and described first order organic rankine cycle system the first condenser, the heat-absorbing medium passage of described second level organic rankine cycle system the first vaporizer is serially connected on the second level organic Rankine circulating line between described second level organic rankine cycle system organic working medium compression pump and described second level organic rankine cycle system the second vaporizer.
Preferably, described second level organic rankine cycle system is also provided with interior preheater, the heat release medium channel of described interior preheater is serially connected on the second screw rod generator set and the second level organic Rankine circulating line between the organic rankine cycle system coagulator of the described second level of described second level organic Rankine circulation, and the heat-absorbing medium passage of described interior preheater is serially connected on the second level organic Rankine circulating line between described second level organic rankine cycle system the first vaporizer and described second level organic rankine cycle system the second vaporizer.
Conventionally, described first, second grade of organic rankine cycle system is equipped with liquid container/liquid storage tank, and the described liquid container/liquid storage tank of described first, second grade of organic rankine cycle system is separately positioned between described first order organic rankine cycle system organic working medium coagulator and first order organic rankine cycle system organic working medium compression pump and between second level organic rankine cycle system organic working medium coagulator and second level organic rankine cycle system organic working medium compression pump.
Preferably, the motor of described turbine power generation unit is turbo machine, screw expander or steam turbine, and the motor of described first, second screw rod generator set is screw expander.
Described first order organic Rankine the second vaporizer and described second level organic Rankine second vaporizer that circulates that circulates can be all plate type heat exchanger or other forms of heat exchanger.
Circulate the first vaporizer, described second level organic Rankine circulation first evaporator and described second level organic Rankine preheater of described first order organic Rankine can be all tubular heat exchanger or other form heat exchangers.
Conventionally, the circulatory mediator of the described steam turbine circulatory system can be water, circulatory mediator in the circulatory mediator of described first order organic rankine cycle system and described second level organic rankine cycle system can be all organic media, and described organic media is preferably R113 or R245fa or other organic medias.
The beneficial effects of the utility model:
Adopt the generating of the steam turbine circulatory system and the generating of organic rankine cycle system coupled low temperature; and by the structure of various optimizations; by the cascade utilization principle of energy; tail gas containing having surplus heat or the heat in steam are carried out respectively to three generatings by the steam turbine circulatory system, first order organic rankine cycle system and second level organic rankine cycle system respectively; effectively improve the utilization ratio of heat; be conducive to avoid energy dissipation, and be conducive to protection of the environment.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Referring to Fig. 1, the utility model provides a kind of steam turbine generation a kind of ORC (organic Rankine cycle) low-temperature electricity generating device/system that is coupled, and comprises steam turbine cycle generating system, first order ORC (organic Rankine cycle) low-temperature power generation system and second level ORC (organic Rankine cycle) low-temperature power generation system.Described steam turbine cycle generating system comprises that steam turbine circulating line is successively by the first compression pump 1, thermal transition device 2, steam turbine generation unit 3, first order ORC (organic Rankine cycle) low-temperature power generation system the second vaporizer 4, first order ORC (organic Rankine cycle) low-temperature power generation system the first vaporizer 5 and steam turbine cycle generating system liquid tank/tank 6; Described first order ORC (organic Rankine cycle) low-temperature power generation system comprises first order organic working medium compression pump 7, first order organic Rankine the first vaporizer 5, first order organic Rankine the second vaporizer 4, first order organic working medium screw rod generator set 8, second level organic Rankine the second vaporizer 9, second level organic Rankine the first vaporizer 10, first order organic working medium coagulator 11 and the first order organic working medium storage tank/case 12 of the first order organic Rankine circulating line connection of passing through successively; Described second level ORC (organic Rankine cycle) low-temperature power generation system comprises successively the second level organic working medium compression pump 13 that connects by second level organic Rankine circulating line, second level organic Rankine the first vaporizer 10, second level organic Rankine preheater 15, second level organic Rankine the second vaporizer 9, second level organic working medium screw rod generator set 14, second level organic working medium coagulator 16, second level organic Rankine working medium storage tank/case 17 etc.Form thus intercoupling of three grades of power generation systems, using the waste heat of previous stage power generation system as the power of rear one-level power generation system, the step of having realized thus energy makes full use of, simultaneously, because rear two-stage power generation system has adopted the low-temperature generating system of organic Rankine circulation, the relatively low medium heat energy of temperature can be used thus, realize effectively generating.
The thermal transition device 2 of the described steam turbine circulatory system gathers the heat containing in tail gas, steam (being called for short waste heat tail gas or afterheat steam) and the underground heat that can utilize waste heat, by thermal transition device 2, heat is delivered to the circulatory mediator of the steam turbine circulatory system, drive steam turbine to generate electricity, because temperature is at this moment relatively high, adopt steam turbine generation to be conducive to increase generated energy.Medium after driving steam turbine generation unit is toward the remaining certain heat of contact, the medium of the steam turbine circulatory system is by circulate the first cycle fluid heat exchange of the second vaporizer and first order organic rankine cycle system of first order organic Rankine, the internal heat of the steam turbine circulatory system medium after heat exchange reduces, the first cycle fluid heat exchange with first order organic rankine cycle system by the first vaporizer continuation of first order organic rankine cycle system again, then enter turbine working medium liquid container/case, then under the effect of steam turbine working medium pump, in steam turbine generation device, circulate, first order organic Rankine circulatory mediator has absorbed first order organic rankine cycle system second vaporizer heat rear driving the first screw rod generator set and has externally generated electricity, then first order organic Rankine circulatory mediator is again by the second circulatory mediator heat exchange of second level organic rankine cycle system the second vaporizer and second level ORC (organic Rankine cycle) low-temperature electricity generating device, and first order organic Rankine circulatory mediator circulates in first order organic Rankine circulation electric generating apparatus by first order organic Rankine circulation compression pump again, second level ORC (organic Rankine cycle) low-temperature power generation system organic working medium is externally generated electricity with first order organic Rankine working medium heat exchange rear driving the second screw rod generator set in second level organic Rankine circulates the second vaporizer, then circulates in the organic Rankine circulation electric generating apparatus of the second level by second level organic rankine cycle system the second compression pump.
By the heat in tail gas, steam and underground heat being carried out respectively to three generatings by the steam turbine circulatory system, first order organic rankine cycle system and second level organic rankine cycle system respectively with upper type, improve the utilization ratio of heat, protection of the environment.
On the first order organic Rankine circulating line between described first order organic rankine cycle system screw rod generator set 8 and described first order organic rankine cycle system working medium compression pump, be also provided with first order ORC organic working medium coagulator 11, on the second level organic Rankine circulating line between described second level organic rankine cycle system screw rod generator set 14 and described second level ORC organic working medium compression pump, be also provided with second level organic working medium coagulator 16.The setting of first order organic working medium coagulator and second level organic working medium coagulator, while making the first order organic circulation medium of gaseous state and second level organic circulation medium respectively by first order organic working medium coagulator and second level organic working medium coagulator, return to liquid state, be convenient to the circulation of first order organic circulation medium and second level organic circulation medium.
In order to utilize more fully heat energy, between the described steam turbine circulatory system and first order organic rankine cycle system, be provided with first order ORC power generation system the first vaporizer 5 for further heat exchange, described first order organic Rankine second vaporizer that circulates can be communicated with the heat release medium channel of described first order ORC power generation system the first vaporizer 5 with the steam turbine circulating line between described steam turbine working medium pump, first order organic Rankine circulating line between the second vaporizer of described first order organic Rankine circulation organic working medium compression pump and the circulation of described first order organic Rankine can be communicated with the circulate preheating passage of the first vaporizer of described first order organic Rankine.The circulate setting of the first vaporizer of first order organic Rankine, liquid first order organic Rankine circulatory mediator carries out heat exchange (first order organic circulation medium is carried out to preheating) by the circulate medium of the first vaporizer and the steam turbine circulatory system of first order organic Rankine, first order organic circulation medium after preheating is again by the media for heat exchange of first order organic rankine cycle system the second vaporizer and the steam turbine circulatory system, make the gasification of first order organic circulation medium, thereby promote first order organic Rankine circulation screw rod generator set, externally generate electricity.The setting of first order organic rankine cycle system the first vaporizer can guarantee the enough heats of first order organic circulation Absorption of Medium, guarantees the normal work of the first screw rod generator set.
Further, between described first order organic rankine cycle system and second level organic rankine cycle system, can also be provided with second level organic rankine cycle system the first vaporizer 10, first order organic Rankine circulating line between described second level organic rankine cycle system the second vaporizer and described first order organic rankine cycle system coagulator 11 can be connected with the heat release medium channel of the first vaporizer 10 of described second level organic rankine cycle system, second level organic Rankine circulating line between the second vaporizer 9 of described second level organic Rankine circulation organic working medium compression pump 13 and described second level organic rankine cycle system can be connected with the preheating passage of described second level organic rankine cycle system the first vaporizer 10.The circulatory mediator of liquid second level organic rankine cycle system can be by second level organic Rankine first vaporizer 10 and first order organic Rankine circulatory mediator heat exchange (second level organic Rankine circulatory mediator is carried out to preheating) that circulate, second level organic Rankine circulatory mediator after preheating carries out heat exchange by second level organic rankine cycle system the second vaporizer and first order organic Rankine circulatory mediator again, make second level organic Rankine circulatory mediator gasification, thereby promote second level organic rankine cycle system screw rod generator set, externally generate electricity.Organic Rankine the circulate setting of the first vaporizer in the second level can guarantee that second level organic Rankine circulatory mediator absorbs enough heats, guarantee when second level organic Rankine circulatory mediator circulates the second vaporizer through second level organic Rankine to gasify, and then guarantee the normal work of the second screw rod generator set.
On the organic Rankine circulating line of the described second level, be also provided with second level organic Rankine preheater 15, described second level organic Rankine circulation screw rod generator set 14 is communicated with the heat release medium channel of described second level organic Rankine circulation organic working medium preheater 15 with the second level organic Rankine circulating line between described second level organic Rankine circulation organic working medium coagulator, and the second level organic Rankine circulating line that described second level organic Rankine circulates between first, second vaporizer is connected with described second level organic Rankine circulation organic working medium preheater 15 preheating passages.The setting of second level organic Rankine circulation organic working medium preheater 15, make organic Rankine circulation organic media in the second level carry out heat exchange with the liquid second level organic Rankine circulatory mediator through condensation before entering second level organic rankine cycle system coagulator 16, first, reduce temperature when second level organic Rankine circulatory mediator enters coagulator 16, reduced the needed energy of coagulator 16 condensation process; Secondly, the second level organic Rankine circulatory mediator of liquid towards carries out a preheating again, guarantees the normal work of the second screw rod generator set.
Preferably, the motor 3 of described steam turbine generation unit can be turbo machine, decompressor or steam turbine, described first, the motor of the second screw rod generator set can be screw expander or turbo machine, described first order organic Rankine the second vaporizer and described second level organic Rankine second vaporizer that circulates that circulates can be all plate type heat exchanger or other form heat exchangers, described first order organic rankine cycle system the first vaporizer 5, organic Rankine circulate the first vaporizer 10 and described organic working medium preheater 15 in the described second level can be all calandria preheater or other heat exchangers, described first order organic circulation medium and described second level organic circulation medium can be R113 or R245fa or other working medium.
Being connected/being communicated with between described each circulating line and corresponding each equipment can be according to prior art, described each generator set mainly comprises the motor that driven by respective media and by described engine-driven corresponding generator, corresponding pipeline is connected with generator set and refers to the import of motor medium and entrance, motor medium channel is connected in series into associated conduit.
Claims (10)
1. ORC (organic Rankine cycle) low-temperature generating and the steam turbine generation generating that intercouples, it is characterized in that comprising the steam turbine circulatory system, first order organic rankine cycle system and second level organic rankine cycle system, the described steam turbine circulatory system comprises the first compression pump connecting by turbine circulating line successively, thermal transition device, turbine power generation unit, first order organic Rankine second vaporizer that circulates, first order organic Rankine circulate the first vaporizer and turbine liquid container/case, the heat-absorbing medium channel connection of described turbine circulating line and described thermal transition device, be communicated with the circulate heat release medium channel of the second vaporizer and the first vaporizer of described first order organic Rankine, described first order organic rankine cycle system comprises the described first order organic Rankine circulation organic working medium compression pump connecting by first order organic Rankine circulating line successively, the first vaporizer, the second vaporizer, the first screw rod generator set, second level organic rankine cycle system the second vaporizer, second level organic rankine cycle system the first vaporizer, first order organic rankine cycle system condenser and first order organic Rankine working medium storage tank/case, described first order organic Rankine circulating line and described first order organic Rankine the circulate heat-absorbing medium channel connection of the second vaporizer of the first vaporizer and described first order organic Rankine that circulates, be communicated with second level organic Rankine the circulate heat release medium channel of the first vaporizer of the second vaporizer and second level organic Rankine that circulates, described second level organic rankine cycle system comprises the described second level organic Rankine cycle fluid compression pump connecting by the second Rankine cycle pipeline successively, second level organic Rankine first vaporizer that circulates, second level organic Rankine second vaporizer that circulates, the second screw rod generator set, second level organic Rankine circulating preheater, second level organic Rankine cycle condenser and second level organic Rankine working medium liquid container/case, described second level organic Rankine circulating line and described second level organic Rankine the circulate heat-absorbing medium channel connection of the second vaporizer of the first vaporizer and second level organic Rankine that circulates.
2. ORC (organic Rankine cycle) low-temperature according to claim 1 generating and the steam turbine generation electricity generating device that intercouples, it is characterized in that the condenser of described first order organic rankine cycle system is between the first vaporizer of described second level organic rankine cycle system and the working medium liquid container/case of described first order organic rankine cycle system, the condenser of organic rankine cycle system is between the screw rod generator set of described second level organic rankine cycle system and the working medium liquid container/case of described second level organic rankine cycle system.
3. ORC (organic Rankine cycle) low-temperature according to claim 2 generating and the steam turbine generation electricity generating device that intercouples, it is characterized in that being also provided with between the described steam turbine circulatory system and first order organic rankine cycle system the first vaporizer of first order organic rankine cycle system, the heat release medium channel of the first vaporizer of described first order organic rankine cycle system is serially connected on second vaporizer and the turbine circulating line between described turbine working medium compression pump of described first order organic Rankine circulation, the heat-absorbing medium passage of the first vaporizer of described first order organic rankine cycle system is serially connected on the first order organic rankine cycle system organic working medium compression pump and the first order organic Rankine circulating line between described first order organic rankine cycle system the second vaporizer of described first order organic rankine cycle system.
4. ORC (organic Rankine cycle) low-temperature according to claim 3 generating and the steam turbine generation electricity generating device that intercouples, it is characterized in that being also provided with between described first order organic Rankine cycle generating system and second level organic rankine cycle system the first vaporizer of second level organic rankine cycle system, the heat release medium channel of the first vaporizer of described second level organic rankine cycle system is serially connected on the first order organic Rankine circulating line between described second level organic rankine cycle system the second vaporizer and described first order organic rankine cycle system the first condenser, the heat-absorbing medium passage of described second level organic rankine cycle system the first vaporizer is serially connected on the second level organic Rankine circulating line between described second level organic rankine cycle system organic working medium compression pump and described second level organic rankine cycle system the second vaporizer.
5. ORC (organic Rankine cycle) low-temperature according to claim 4 generating and the steam turbine generation electricity generating device that intercouples, it is characterized in that described second level organic rankine cycle system is also provided with interior preheater, the heat release medium channel of described interior preheater is serially connected on the second screw rod generator set and the second level organic Rankine circulating line between the organic rankine cycle system coagulator of the described second level of described second level organic Rankine circulation, the heat-absorbing medium passage of described interior preheater is serially connected on the second level organic Rankine circulating line between described second level organic rankine cycle system the first vaporizer and described second level organic rankine cycle system the second vaporizer.
6. ORC (organic Rankine cycle) low-temperature according to claim 5 generating and the steam turbine generation electricity generating device that intercouples, it is characterized in that described first, second level organic rankine cycle system is equipped with liquid container/liquid storage tank, described first, described liquid container/the liquid storage tank of second level organic rankine cycle system is separately positioned between described first order organic rankine cycle system organic working medium coagulator and first order organic rankine cycle system organic working medium compression pump and between second level organic rankine cycle system organic working medium coagulator and second level organic rankine cycle system organic working medium compression pump.
7. according to the ORC (organic Rankine cycle) low-temperature generating described in claim 1-6 any one and the steam turbine generation electricity generating device that intercouples, the motor that it is characterized in that described turbine power generation unit is turbo machine, screw expander or steam turbine, and the motor of described first, second screw rod generator set is screw expander.
8. ORC (organic Rankine cycle) low-temperature according to claim 6 generating and the steam turbine generation electricity generating device that intercouples, is characterized in that described first order organic rankine cycle system the second vaporizer and described second level organic rankine cycle system the second vaporizer are plate type heat exchanger.
9. ORC (organic Rankine cycle) low-temperature according to claim 6 generating and the steam turbine generation electricity generating device that intercouples, is characterized in that described first order organic rankine cycle system the first vaporizer, described second level organic rankine cycle system the first vaporizer and described second level organic Rankine preheater are calandria preheater.
10. ORC (organic Rankine cycle) low-temperature according to claim 6 generating and the steam turbine generation electricity generating device that intercouples, the circulatory mediator that it is characterized in that the described steam turbine circulatory system is water, and the circulatory mediator in the circulatory mediator in described first order organic rankine cycle system and described second level organic rankine cycle system is organic.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640243A (en) * | 2016-12-30 | 2017-05-10 | 翁志远 | Residual heat electric generating system and technology thereof, as well as power station |
| CN106703909A (en) * | 2016-07-29 | 2017-05-24 | 国网山东省电力公司桓台县供电公司 | Power system stepped heat energy utilization type power generation device |
| CN108561199A (en) * | 2018-04-04 | 2018-09-21 | 平山载清新能源技术开发有限公司 | A kind of multi-heat source point heat energy power-generating unit |
| CN115142911A (en) * | 2022-07-04 | 2022-10-04 | 华能陇东能源有限责任公司 | Cascade heat energy utilization type power generation device of power system |
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2014
- 2014-05-19 CN CN201420255282.5U patent/CN204024736U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106703909A (en) * | 2016-07-29 | 2017-05-24 | 国网山东省电力公司桓台县供电公司 | Power system stepped heat energy utilization type power generation device |
| CN106703909B (en) * | 2016-07-29 | 2019-04-26 | 国网山东省电力公司桓台县供电公司 | Electric system step heat energy utilization formula power generator |
| CN106640243A (en) * | 2016-12-30 | 2017-05-10 | 翁志远 | Residual heat electric generating system and technology thereof, as well as power station |
| CN108561199A (en) * | 2018-04-04 | 2018-09-21 | 平山载清新能源技术开发有限公司 | A kind of multi-heat source point heat energy power-generating unit |
| CN115142911A (en) * | 2022-07-04 | 2022-10-04 | 华能陇东能源有限责任公司 | Cascade heat energy utilization type power generation device of power system |
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