CN105221432A - There is the screw compressor system of organic Rankine bottoming cycle - Google Patents
There is the screw compressor system of organic Rankine bottoming cycle Download PDFInfo
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- CN105221432A CN105221432A CN201510701816.1A CN201510701816A CN105221432A CN 105221432 A CN105221432 A CN 105221432A CN 201510701816 A CN201510701816 A CN 201510701816A CN 105221432 A CN105221432 A CN 105221432A
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- 239000000126 substance Substances 0.000 claims abstract description 11
- 230000008878 coupling Effects 0.000 claims abstract description 9
- 238000010168 coupling process Methods 0.000 claims abstract description 9
- 238000005859 coupling reaction Methods 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 claims description 51
- 239000010687 lubricating oil Substances 0.000 claims description 31
- 239000000446 fuel Substances 0.000 claims description 27
- 238000002347 injection Methods 0.000 claims description 27
- 239000007924 injection Substances 0.000 claims description 27
- 239000006200 vaporizer Substances 0.000 claims description 13
- 239000000314 lubricant Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 239000010725 compressor oil Substances 0.000 claims description 2
- 239000002826 coolant Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 238000009834 vaporization Methods 0.000 description 2
- 230000008016 vaporization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention provides the screw compressor system with organic Rankine bottoming cycle, it can solve the low problem of reuse ratio that existing screw compressor system causes directly to outer discharge.It comprises the motor of helical lobe compressor host and the work of drive screw compressor main body, screw expander and working substance steam generation systems, output shaft and the helical lobe compressor host rotor spindle rotor spindle of screw expander are coupling, working substance steam generation systems comprises condenser, working medium tank, working medium pump, heat exchanger, the heat energy output end of helical lobe compressor host is connected by pipeline with heat exchanger, the low-temp low-pressure medium output terminal of screw expander is connected with condenser medium inlet end by pipeline, the media outlet end of condenser is connected with working medium tank by pipeline, working medium tank, working medium pump, connected by pipeline successively between heat exchanger, the high-temperature high-pressure medium output terminal of heat exchanger is connected with the high-temperature high-pressure medium input end of screw expander by pipeline.
Description
Technical field
The present invention relates to helical-lobe compressor technical field, be specially the screw compressor system with organic Rankine bottoming cycle.
Background technique
Helical-lobe compressor is a kind of common positive displacement compressor, its working procedure follows the law of thermodynamics, because the temperature difference of its inlet/outlet gas is little, it has been generally acknowledged that the power that helical-lobe compressor inputs all is converted into heat energy discharge, generally this partial heat energy is all by directly discharge after heat-exchange system cooling, its heat-exchange system generally uses fan cooled or water cooling mode, and it exists the low problem of the reuse ratio of heat energy, can not meet the requirement of current energy-saving and emission-reduction.
Existing organic Rankine bottoming cycle (OrganicRankineCycle can be abbreviated as ORC) is used for power generation system, and not containing superheater in the heat exchanger of general organic Rankine bottoming cycle, or not only erects and put superheater.
Summary of the invention
For the problems referred to above, the invention provides the screw compressor system with organic Rankine bottoming cycle, it can solve the problem that existing screw compressor system causes energy utilization rate low directly to the unnecessary heat energy of outer discharge, thus meets the requirement of current energy-saving and emission-reduction.
There is the screw compressor system of organic Rankine bottoming cycle, it motor comprising helical lobe compressor host and drive described helical-lobe compressor body of work, it is characterized in that: it also comprises screw expander and working substance steam generation systems, output shaft and the described helical lobe compressor host rotor spindle rotor spindle of described screw expander are coupling, described working substance steam generation systems comprises condenser, working medium tank, working medium pump, heat exchanger, the heat energy output end of described helical lobe compressor host is connected by pipeline with described heat exchanger, the low-temp low-pressure medium output terminal of described screw expander is connected with described condenser medium inlet end by pipeline, the media outlet end of described condenser is connected with working medium tank by pipeline, described working medium tank, working medium pump, connected by pipeline successively between heat exchanger, the high-temperature high-pressure medium output terminal of described heat exchanger is connected with the high-temperature high-pressure medium input end of described screw expander by pipeline.
Further, described heat exchanger comprises the preheater, vaporizer and the superheater that connect successively, described working medium pump is connected with the working medium input end of described preheater, and the working medium output terminal of described superheater is connected with the High Temperature High Pressure working medium input end of described screw expander by pipeline.
Further, the pipeline connecting described working medium pump and working medium tank is provided with filter, the pipeline connecting described working medium pump and described preheater is provided with exsiccator, pressure transducer and temperature transducer.
Further, the low-temp low-pressure medium output terminal connecting described screw expander with on the pipeline of described condenser, be connected described superheater High Temperature High Pressure working medium output terminal and described screw expander High Temperature High Pressure working medium input end pipeline on be provided with pressure transducer, temperature transducer respectively.
Further, the output shaft of described screw expander and described rotor axis of electric are coupling.
Further, described helical lobe compressor host is fuel injection helical lobe compressor, the heat energy output end of described fuel injection helical lobe compressor is high temperature mixed oil and gas output terminal, described high temperature mixed oil and gas output terminal is connected to deaerator by one-way valve, described deaerator carries out Oil-gas Separation to mixed oil and gas, the gas outlet of described deaerator connects minimum pressure valve, described minimum pressure valve is connected by the gas access of pipeline with described preheater, the gas outlet of described preheater connects separator by pipeline, the lubricating oil outlet of described deaerator is connected with described superheater by pipeline, the lubricating oil outlet of described preheater is connected with the oil return mouth of described fuel injection helical lobe compressor by pipeline, connect the pipeline between described preheater lubricating oil outlet and described fuel injection helical lobe compressor oil return mouth flows to along lubricant oil and be provided with flow of lubrication modulating valve successively, lubricating oil filter.
Further, described screw compression host machine is oil free screw compressor, the heat energy output end of described oil free screw compressor is high-temperature gas output terminal, described high-temperature gas output terminal is connected with described superheater by pipeline, the gas outlet of described preheater connects separator by pipeline, and the high-temperature gas of being discharged by described high-temperature gas output terminal is discharged by the gas outlet of described preheater successively by pipeline after described superheater, vaporizer, preheater heat exchange, discharge after separator is separated again.
Further, the gear box lubricating oil output terminal of described oil free screw compressor connects oil pump, described oil pump connects into the lubricating oil inlet end of described preheater by pipeline, the lubricating oil outlet end of described preheater connects lubricating oil filter by pipeline, and described lubricating oil filter connects into the oil return end of described gear-box by return line.
The beneficial effect of helical-lobe compressor of the present invention is: it passes through screw expander, heat exchanger, working medium pump, condenser forms an organic Rankine bottoming cycle, wherein by heat exchanger, working medium pump, the working substance steam generation systems that condenser is formed absorbs the heat energy that helical-lobe compressor exports, by the organic working medium lead-screw decompressor after thermal evaporation to helical-lobe compressor or and the motor output mechanical energy of drive screw compressor, the running of the motor of auxiliary threaded rod compressor or drive screw compressor, the operate power of helical-lobe compressor or motor can be reduced, reach the effect of energy-saving and emission-reduction, therefore the heat energy that its energy effective recycling helical-lobe compressor exports, meet the requirement of current energy-saving and emission-reduction.
Accompanying drawing explanation
Fig. 1 is a kind of schematic diagram with the single-stage fuel injection helical lobe compressor system of organic Rankine bottoming cycle of the present invention;
Fig. 2 is a kind of schematic diagram with the two-stage fuel injection screw compressor system of organic Rankine bottoming cycle of the present invention;
Fig. 3 is a kind of schematic diagram with the single-stage oil free screw compressor system of organic Rankine bottoming cycle of the present invention;
Fig. 4 is a kind of schematic diagram with the two-stage oil free screw compressor system of organic Rankine bottoming cycle of the present invention.
Embodiment
Embodiment one:
A kind of single-stage fuel injection helical lobe compressor system with organic Rankine bottoming cycle, see Fig. 1, it comprises single-stage fuel injection helical lobe compressor main frame 1-1, drive the motor 2 of single-stage fuel injection helical lobe compressor main frame 1-1, screw expander 5 and working substance steam generation systems 6, the suction port end of single-stage fuel injection helical lobe compressor main frame 1-1 connects suction valve 3 successively, air intake filter 4, the output shaft of screw expander 5 and the rotor shaft of single-stage fuel injection helical lobe compressor main frame 1-1 are coupling, working substance steam generation systems 6 comprises condenser 61, working medium tank 62, working medium pump 63 and heat exchanger, wherein heat exchanger is by the preheater 641 connected successively, vaporizer 642, superheater 643 is formed, the high temperature mixed oil and gas output terminal of single-stage fuel injection helical lobe compressor main frame 1-1 is connected to deaerator 8 by one-way valve 7, the gas outlet of deaerator 8 connects minimum pressure valve 9, minimum pressure valve 9 is connected by the gas access of pipeline with preheater 641, the gas outlet of preheater 641 connects separator 10 by pipeline, the lubricating oil outlet of deaerator 8 is connected with superheater 643 by pipeline, the lubricating oil outlet of preheater 641 is connected with the oil return mouth of single-stage fuel injection helical lobe compressor 1 by pipeline, pipeline between connection preheater 641 lubricating oil outlet and single-stage fuel injection helical lobe compressor lubricant oil refluxing opening flows to along lubricant oil and is provided with flow of lubrication modulating valve 11 successively, lubricating oil filter 12, the low-temp low-pressure medium output terminal of screw expander 5 is connected with the medium inlet end of condenser 61 by pipeline, the media outlet end of condenser is connected with working medium tank 62 by pipeline, working medium tank 62, working medium pump 63, connected by pipeline successively between preheater 641, the high-temperature high-pressure medium output terminal of superheater is connected with the high-temperature high-pressure medium input end of screw expander 5 by pipeline, connection working medium pump 63 and the pipeline of working medium tank 62 are provided with filter 65, connection working medium pump 63 and the pipeline of preheater 641 are provided with exsiccator 66, pressure transducer P and temperature transducer T, the low-temp low-pressure medium output terminal of connecting screw rod decompressor with on the pipeline of condenser 61, be connected superheater high-temperature high-pressure medium output terminal and screw expander high-temperature high-pressure medium input end pipeline on be provided with pressure transducer P, temperature transducer T respectively, condenser 61 is provided with cooling medium circulation loop, and cooling medium outlet end pipeline is wherein provided with cooling medium consumption regulator 67, 68 is working medium flow modulating valve, and it is for controlling the flow of the organic working medium being entered exsiccator 66 by working medium pump 63.
A kind of working procedure with the single-stage fuel injection helical lobe compressor system of organic Rankine bottoming cycle of this enforcement is specifically described down: on the one hand below in conjunction with Fig. 1, gas is through air intake filter 4, enter in single-stage fuel injection helical lobe compressor main frame 1-1 after suction valve 3, gas and lubricant oil are mixed to form high temperature mixed oil and gas and force to be expelled to one-way valve 7 by single-stage fuel injection helical lobe compressor main frame 1-1 under the driving of motor 2, enter deaerator 8 from one-way valve 7 again and carry out Oil-gas Separation, high-temperature gas after Oil-gas Separation enters preheater by pipeline after minimum pressure valve 9, form cryogenic gas carry out heat exchange in preheater after and discharged by pipeline and supply follow-up use through separator 10 again, and the high temperature grease after Oil-gas Separation enters superheater 643 by the road successively, vaporizer 642, preheater 641 carries out heat exchange and becomes subzero oil to discharge from the lubricating oil outlet of preheater 641 again, come back in single-stage fuel injection helical lobe compressor main frame 1-1 after filtering finally by lubricating oil filter 12, on the other hand, the organic working medium of low temperature is extracted out through filter 65 by working medium pump 63 in working medium tank 62, exsiccator 66 enters the organic working medium input end of preheater 641, then preheater 641 is flowed through successively, vaporizer 642, superheater 643 absorbs heat of vaporization and forms the overheated organic working medium gas of High Temperature High Pressure is entered screw expander 5 again High Temperature High Pressure working medium input end by pipeline, expansion work in screw expander 5 thus to single-stage fuel injection helical lobe compressor main frame 1-1 output mechanical energy, helper motor 2 drives single-stage fuel injection helical lobe compressor main frame 1-1 continuous firing together, the steam working medium exported from screw expander 5 enters condenser 61 by pipeline again and again circulates to flowing into working medium tank 62 after condensing into liquid refrigerant after the cooling medium heat release in condenser 61.
Embodiment two:
As the helical lobe compressor host employing two-stage fuel injection helical-lobe compressor 1-2 of present system, see Fig. 2, the output shaft of screw expander 5 and the rotor shaft of first order helical-lobe compressor 1-2a are coupling, one-way valve 7, lubricating oil filter 12 are connected with second level helical-lobe compressor 1-2b respectively by pipeline, all the other arrange and running all identical with the single-stage fuel injection helical lobe compressor of embodiment one.
Embodiment three:
A kind of single-stage oil free screw compressor system with organic Rankine bottoming cycle, see Fig. 3, it comprises single-stage oil free screw compressor main frame 1-3, drive the motor 2 of single-stage oil free screw compressor main frame 1-3, screw expander 5 and working substance steam generation systems 6, the suction port end of single-stage oil free screw compressor main frame 1-3 connects suction valve 3 successively, air intake filter 4, the output shaft of screw expander 5 and the rotor shaft of motor 2 are coupling, working substance steam generation systems 6 comprises condenser 61, working medium tank 62, working medium pump 63 and heat exchanger, wherein heat exchanger is by the preheater 641 connected successively, vaporizer 642, superheater 643 is formed, the high-temperature gas output terminal of single-stage oil free screw compressor main frame 1-3 is connected by the gas inlet end of pipeline with superheater 643, the gas outlet of preheater 641 connects separator 10 by pipeline, the high-temperature gas of being discharged by high-temperature gas output terminal by pipeline successively through superheater 643, vaporizer 642, discharged by the gas outlet of preheater 641 after preheater 641 heat exchange, discharge for follow-up after separator 10 is separated again, the gear-box 1-3a lubricant oil output terminal of single-stage oil free screw compressor main frame 1-3 connects oil pump 13, oil pump 13 connects into the lubricating oil inlet end of preheater 641 by pipeline, the lubricating oil outlet end of preheater 641 connects lubricating oil filter 12 by pipeline, and lubricating oil filter 12 connects into the oil return end of gear-box by return line, the low-temp low-pressure medium output terminal of screw expander 5 is connected with the medium inlet end of condenser 61 by pipeline, the media outlet end of condenser is connected with working medium tank 62 by pipeline, connected by pipeline successively between working medium tank 62, working medium pump 63, preheater 641, the high-temperature high-pressure medium output terminal of superheater is connected with the high-temperature high-pressure medium input end of screw expander 5 by pipeline, connection working medium pump 63 and the pipeline of working medium tank 62 are provided with filter 65, connection working medium pump 63 and the pipeline of preheater 641 are provided with exsiccator 66, pressure transducer P and temperature transducer T, the low-temp low-pressure medium output terminal of connecting screw rod decompressor with on the pipeline of condenser 61, be connected superheater high-temperature high-pressure medium output terminal and screw expander high-temperature high-pressure medium input end pipeline on be provided with pressure transducer P, temperature transducer T respectively, condenser 61 is provided with cooling medium circulation loop, and cooling medium outlet end pipeline is wherein provided with cooling medium consumption regulator 67, 68 is working medium flow modulating valve, and it is for controlling the flow of the organic working medium being entered exsiccator 66 by working medium pump 63.
A kind of working procedure with the single-stage oil free screw compressor system of organic Rankine bottoming cycle of this enforcement is specifically described down: on the one hand below in conjunction with Fig. 3, gas is through air intake filter 4, suction valve 3 enters single-stage oil free screw compressor main frame 1-3 and compresses, the pressure and temperature of single-stage oil free screw compressor main frame 1-3 continuous lift gas under the driving of motor 2 is until cause superheater 643 by pipeline after reaching rating value and flow through superheater 643 successively, vaporizer 642 carries out heat exchange with preheater 641 and discharges from preheater 641 after release heat and discharge for follow-up after separator 10 is separated, the gear box lubricating oil of single-stage oil free screw compressor main frame 1-3 by oil pump 13 extract out enter preheater 641 heat exchange by the road after reflux by the road again, filtered by lubricating oil filter 12 after pass back into gear-box, on the other hand, the organic working medium of low temperature is extracted out through filter 65 by working medium pump 63 in working medium tank 62, exsiccator 66 enters the organic working medium input end of preheater 641, then preheater 641 is flowed through successively, vaporizer 642, superheater 643 absorbs heat of vaporization and forms the overheated organic working medium gas of High Temperature High Pressure is entered screw expander 5 again High Temperature High Pressure working medium input end by pipeline, expansion work in screw expander 5 thus to motor 2 output mechanical energy, helper motor 2 drives single-stage oil free screw compressor main frame 1-3 continuous firing together, the steam working medium exported from screw expander 5 enters condenser 61 by pipeline again and again circulates to flowing into working medium tank 62 after condensing into liquid refrigerant after the cooling medium heat release in condenser 61.
Embodiment four:
As the helical lobe compressor host employing two-stage oil free screw compressor 1-4 of present system, see Fig. 4, the high temperature and high pressure gas output terminal of one-level oil free screw compressor 1-4a enters superheater 643 by pipeline and flows through vaporizer 642 successively again, dewater through one-level separator 10-1 after preheater 641 heat exchange, enter secondary oil free screw compressor 1-4b again to enter superheater 643 through pipeline after second compression again and flow through vaporizer 642 successively again, after preheater 641 heat exchange after secondary separator 10-2 dewaters for follow-up, all the other arrange and running all identical with the single-stage oil free screw compressor of embodiment three.
The screw compressor system with organic Rankine bottoming cycle of the present invention, when helical lobe compressor host adopts fuel injection helical lobe compressor, the output shaft of screw expander also can directly and the rotor shaft of motor be coupling, thus helper motor drive screw compressor operation, reduce the configuration operation power of motor, reach the effect of energy-saving and emission-reduction.
The helical-lobe compressor with organic Rankine bottoming cycle of the present invention, organic working medium is adopted to come for helical-lobe compressor heat radiation, and in heat exchanger, independently superheater is set, therefore, it is possible to make the temperature characteristic of heat exchanger and compressor assembly in Rankine cycle match, realize more stable temperature and control; And adopt screw expander to carry out gas-liquid two-phase expansion work, it allows working medium to operate in Gas-liquid phase region, and can adapt to wider operating mode, thus have better adaptability, decompressor work is more stable; And adopt screw expander to export shaft work Direct driver helical lobe compressor host or rotor acting, the utilization ratio that its decompressor exports shaft work is higher.
Claims (8)
1. there is the screw compressor system of organic Rankine bottoming cycle, it motor comprising helical lobe compressor host and drive described helical-lobe compressor body of work, it is characterized in that: it also comprises screw expander and working substance steam generation systems, output shaft and the described helical lobe compressor host rotor spindle rotor spindle of described screw expander are coupling, described working substance steam generation systems comprises condenser, working medium tank, working medium pump, heat exchanger, the heat energy output end of described helical lobe compressor host is connected by pipeline with described heat exchanger, the low-temp low-pressure medium output terminal of described screw expander is connected with described condenser medium inlet end by pipeline, the media outlet end of described condenser is connected with working medium tank by pipeline, described working medium tank, working medium pump, connected by pipeline successively between heat exchanger, the High Temperature High Pressure working medium output terminal of described heat exchanger is connected with the High Temperature High Pressure working medium input end of described screw expander by pipeline.
2. the screw compressor system with organic Rankine bottoming cycle according to claim 1, it is characterized in that: described heat exchanger comprises the preheater, vaporizer and the superheater that connect successively, described working medium pump is connected with the working medium input end of described preheater, and the working medium output terminal of described superheater is connected with the High Temperature High Pressure working medium input end of described screw expander by pipeline.
3. the screw compressor system with organic Rankine bottoming cycle according to claim 2, it is characterized in that: the pipeline connecting described working medium pump and working medium tank is provided with filter, the pipeline connecting described working medium pump and described preheater is provided with exsiccator, pressure transducer and temperature transducer.
4. the screw compressor system with organic Rankine bottoming cycle according to claim 3, is characterized in that: the low-temp low-pressure medium output terminal connecting described screw expander with on the pipeline of described condenser, be connected described superheater High Temperature High Pressure working medium output terminal and described screw expander High Temperature High Pressure working medium input end pipeline on be provided with pressure transducer, temperature transducer respectively.
5. the screw compressor system with organic Rankine bottoming cycle according to claim 4, is characterized in that: output shaft and the described rotor axis of electric of described screw expander are coupling.
6. the screw compressor system with organic Rankine bottoming cycle according to claim 4 or 5, it is characterized in that: described helical lobe compressor host is fuel injection helical lobe compressor, the heat energy output end of described fuel injection helical lobe compressor is high temperature mixed oil and gas output terminal, described high temperature mixed oil and gas output terminal is connected to deaerator by one-way valve, described deaerator carries out Oil-gas Separation to mixed oil and gas, the gas outlet of described deaerator connects minimum pressure valve, described minimum pressure valve is connected by the gas access of pipeline with described preheater, the gas outlet of described preheater connects separator by pipeline, the lubricating oil outlet of described deaerator is connected with described superheater by pipeline, the lubricating oil outlet of described preheater is connected with the oil return mouth of described fuel injection helical lobe compressor by pipeline, connect the pipeline between described preheater lubricating oil outlet and described fuel injection helical lobe compressor oil return mouth flows to along lubricant oil and be provided with flow of lubrication modulating valve successively, lubricating oil filter.
7. the screw compressor system with organic Rankine bottoming cycle according to claim 5, it is characterized in that: described screw compression host machine is oil free screw compressor, the heat energy output end of described oil free screw compressor is high-temperature gas output terminal, described high-temperature gas output terminal is connected with described superheater by pipeline, the gas outlet of described preheater connects separator by pipeline, the high-temperature gas of being discharged by described high-temperature gas output terminal passes through pipeline successively through described superheater, vaporizer, discharged by the gas outlet of described preheater after preheater heat exchange, discharge after separator is separated again.
8. the screw compressor system with organic Rankine bottoming cycle according to claim 7, it is characterized in that: the gear box lubricating oil output terminal of described oil free screw compressor connects oil pump, described oil pump connects into the lubricating oil inlet end of described preheater by pipeline, the lubricating oil outlet end of described preheater connects lubricating oil filter by pipeline, and described lubricating oil filter connects into the oil return end of described gear-box by return line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510701816.1A CN105221432A (en) | 2015-10-27 | 2015-10-27 | There is the screw compressor system of organic Rankine bottoming cycle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510701816.1A CN105221432A (en) | 2015-10-27 | 2015-10-27 | There is the screw compressor system of organic Rankine bottoming cycle |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107061282A (en) * | 2016-12-30 | 2017-08-18 | 山西易通环能科技集团有限公司 | A kind of energy-saving screw rod air compressor machine |
| CN108104879A (en) * | 2018-01-17 | 2018-06-01 | 无锡锡压压缩机有限公司 | A kind of screw expander, helical-lobe compressor, the integrated system of motor |
| CN110500279A (en) * | 2019-07-29 | 2019-11-26 | 无锡锡压压缩机有限公司 | Waste heat recovery type oil-injected screw compressor control system and its control method |
| CN114412751A (en) * | 2022-03-14 | 2022-04-29 | 上海孟宝机电工程有限公司 | Efficient energy-saving integrated air compressor system |
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Application publication date: 20160106 |
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| RJ01 | Rejection of invention patent application after publication |