CN203532055U - Gas-steam combined circulation type air inlet dehumidifying and cooling system - Google Patents
Gas-steam combined circulation type air inlet dehumidifying and cooling system Download PDFInfo
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- CN203532055U CN203532055U CN201320520309.4U CN201320520309U CN203532055U CN 203532055 U CN203532055 U CN 203532055U CN 201320520309 U CN201320520309 U CN 201320520309U CN 203532055 U CN203532055 U CN 203532055U
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- 238000001816 cooling Methods 0.000 title claims abstract description 88
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 claims abstract description 40
- 229940059936 lithium bromide Drugs 0.000 claims description 19
- 239000002274 desiccant Substances 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 12
- 239000003546 flue gas Substances 0.000 claims description 10
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 5
- 239000008399 tap water Substances 0.000 claims description 4
- 235000020679 tap water Nutrition 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 230000033228 biological regulation Effects 0.000 abstract description 8
- 239000000498 cooling water Substances 0.000 abstract description 8
- 238000007791 dehumidification Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000010521 absorption reaction Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000002918 waste heat Substances 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract 1
- 230000003993 interaction Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 9
- 230000007423 decrease Effects 0.000 description 8
- 238000010248 power generation Methods 0.000 description 8
- 239000000779 smoke Substances 0.000 description 6
- 239000003517 fume Substances 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005057 refrigeration Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000003230 hygroscopic agent Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000005619 thermoelectricity Effects 0.000 description 1
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Abstract
The utility model provides a gas-steam combined circulation type air inlet dehumidifying and cooling system. The gas-steam combined circulation type air inlet dehumidifying and cooling system is formed by integrating a lithium bromide absorption refrigerator, a hot water waste heat boiler, a cooling water tower, a rotary dehumidifier and two gas-water heat exchangers. By the coordinated regulation of dehumidification and cooling of inlet air, dehumidification of the rotary dehumidifier and cooling of a water temperature of the cooling water tower, the difficult problem that the combined circulation and air inlet cooling system has the unbeneficial interaction influence on an air temperature property and the defects that the variation of an air temperature greatly influences on the properties of the combined circulation and variable working conditions can be solved and overcome, so that the operation of the combined circulation is more stable, safer and more reliable; furthermore, the potentials of improving the output power, the efficiency and the economical benefits of the combined circulation through air inlet cooling are exploited; the gas-steam combined circulation type air inlet dehumidifying and cooling system is beneficial to cold-heat electric charge dynamic deployment of a combined supply of cooling, heating and power system, cooperation and co-compensation with an electric system, efficient step utilization of energy and safe and stable operation of the system based on the combined circulation.
Description
Technical field
The utility model relates to energy technology field, particularly a kind of air inlet desiccant cooling system of Gas-steam Combined Cycle.
Background technique
Gas turbine performance changes with atmospheric temperature, while being down to-30 ℃ by 15 ℃, output power can increase by 47%, efficiency improves 10.5% (relative value), while being increased to 40 ℃ by 15 ℃, output power declines 23%, decrease in efficiency 14.4% (relative value), atmospheric temperature is very large to the performance impact of gas turbine, impact on output power is larger, 1 ℃ of the generally every reduction of gas turbine inlet air temperature, the output power that can improve Gas Turbine Generating Units is about 0.6%-0.8%.Now there are some researches show that atmospheric temperature is larger on the off design performance impact of gas turbine, exhaust heat boiler and steam turbine, along with the rising of atmospheric temperature, Gas-steam Combined Cycle efficiency has obvious decline.
The air inlet desiccant cooling system of Gas-steam Combined Cycle is one and overcomes atmospheric temperature and change the performance of Gas-steam Combined Cycle and Study on Variable Condition Features are had a negative impact and improve the advanced technology of Gas-steam Combined Cycle output power and efficiency.Domain type cooling heating and power generation system based on Gas-steam Combined Cycle is to realize high efficiency of energy and the focus technology of step utilization and the important development direction of distributed energy resource system, therefore, Gas-steam Combined Cycle and air inlet desiccant cooling system thereof are by extensive use more.
The charge air-cooling system of Gas-steam Combined Cycle has spraying cooling, ice cold-storage, LNG cold energy use, compression-type refrigeration, used heat to utilize the forms such as type lithium bromide absorbing type refrigeration, it is the main application form of charge air-cooling system that used heat utilizes type lithium bromide absorption refrigeration, take full advantage of the waste heat flue gas that in Gas-steam Combined Cycle, boiler using steam residual-heat is discharged, saved the energy, and good economy performance.But it is to be solved that the existing charge air-cooling system based on UTILIZATION OF VESIDUAL HEAT IN still exists following problem to have:
Although 1 existing charge air-cooling system has good effect to the raising of the output power of Gas-steam Combined Cycle and efficiency, but do not overcome the receptance that Gas-steam Combined Cycle is changed by atmospheric temperature, the variation of atmospheric temperature is still larger on the impact of the performance of Gas-steam Combined Cycle and variable working condition, and this is unfavorable for the safe and stable operation of Gas-steam Combined Cycle.
2, in charge air-cooling system, the performance of lithium-bromide absorption-type refrigerating machine and refrigerating capacity are subject to impact that atmospheric temperature changes also very greatly, therefore charge air-cooling system produces mutual disadvantageous reciprocal effect with Gas-steam Combined Cycle when atmospheric temperature rises, and this is unfavorable for that the abundant step utilization of the combustion and steam combined cycle energy and charge air-cooling system give full play to the effect of raising Gas-steam Combined Cycle output power and efficiency.
3, when atmospheric temperature changes, the coordinated regulation matching problem of lithium-bromide absorption-type refrigerating machine refrigerating capacity in the smoke evacuation flow of the boiler using steam residual-heat in Gas-steam Combined Cycle and temperature and charge air-cooling system.
4, when Gas-steam Combined Cycle is applied to cooling heating and power generation system, above-mentioned three have problem to be solved, to the dynamic complementation of cool and thermal power load, all will have a negative impact with the operation of electric power system cooperative compensating, the utilization of high efficiency of energy step and safe and stable operation.
Summary of the invention
The utility model, in order to solve the deficiency of the charge air-cooling system existence of existing Gas-steam Combined Cycle, proposes a kind of air inlet desiccant cooling system of Gas-steam Combined Cycle, and this system has following several feature:
1, when atmospheric temperature raises, the air mass flow of gas compressor declines, the ability that air holds water vapour improves, and generally airborne relative moisture increases, and during due to water in air steam gasification, absorbs heat, cause gas-turbine combustion chamber smoke outlet temperature to reduce, humidity is larger, and smoke outlet temperature declines larger, again because boiler using steam residual-heat pinch-point temperature difference is little, therefore smoke evacuation flow and the temperature of boiler using steam residual-heat all decline, and cause lithium-bromide absorption-type refrigerating machine refrigerating capacity to reduce.And atmospheric temperature is when raise, the cooling needed refrigerating capacity of air inlet increases, and needs the smoke evacuation temperature flow of boiler using steam residual-heat to increase temperature of exhaust fume and raises, and bromizates lithium Absorption Refrigerator refrigerating capacity to increase, thereby is conducive to intake temperature decline.In addition, when atmospheric temperature rises, lithium-bromide absorption-type refrigerating machine refrigerating capacity declines, in the situation that hot water temperature is constant, hot water flow demand increases, and cooling tower cooling water temperature raises simultaneously, causes lithium-bromide absorption-type refrigerating machine refrigerating capacity to decline and the increase of hot water flow demand.Therefore,, when atmospheric temperature raises, the atmospheric temperature property of Gas-steam Combined Cycle and charge air-cooling system produces disadvantageous reciprocal effect.The utility model produces disadvantageous reciprocal effect problem for this Gas-steam Combined Cycle and charge air-cooling system atmospheric temperature property, propose first Gas-steam Combined Cycle air inlet dehumidifying, cooling and the cooling integrated morphology combining and method, thereby reach, when atmospheric temperature raises, improve the target of boiler using steam residual-heat extraction flow and temperature and overcome Gas-steam Combined Cycle and charge air-cooling system atmospheric temperature property produces the object of disadvantageous reciprocal effect.
2, propose first to control by rotary dehumidifier charge flow rate and the humidity of Gas-steam Combined Cycle, and the charge air-cooling system refrigerating capacity combining with the regulation and control of cooling water temperature and air inlet chilling temperature regulation and control model.Gas-steam Combined Cycle is stabilized under design conditions or required desirable operating mode and moves, overcome the variable working condition impact of the variation of atmospheric temperature on Gas-steam Combined Cycle.
In order to solve existing fuel gas-steam, join the deficiency of the charge air-cooling system circulating and realize above-mentioned purpose, technical solution of the present utility model is to provide a kind of air inlet desiccant cooling system of Gas-steam Combined Cycle, the variation that overcomes atmospheric temperature is the adverse effect to its performance and variable working condition to Gas-steam Combined Cycle, improves output power, efficiency, economic benefit and the safe and stable operation level of Gas-steam Combined Cycle.
The air inlet desiccant cooling system of described Gas-steam Combined Cycle, air inlet desiccant cooling system described in it.By lithium-bromide absorption-type refrigerating machine, afterheat of hot water boiler, cooling tower, rotary dehumidifier, air-water heat exchanger I, air-water heat exchanger II, formed; It is characterized in that lithium-bromide absorption-type refrigerating machine is connected with afterheat of hot water boiler, air-water heat exchanger II, cooling tower respectively, rotary dehumidifier is connected with afterheat of hot water boiler, air-water heat exchanger I respectively, air-water heat exchanger I connects air-water heat exchanger II, afterheat of hot water boiler is connected with the boiler using steam residual-heat of Gas-steam Combined Cycle, and air-water heat exchanger II is connected with the gas compressor entrance of Gas-steam Combined Cycle.
The air inlet desiccant cooling system of described Gas-steam Combined Cycle, fume afterheat utilization described in it.150 ℃ of-200 ℃ of flue gases that the boiler using steam residual-heat of Gas-steam Combined Cycle is got rid of, drive lithium-bromide absorption-type refrigerating machine to produce the cold water of 7 ℃-12 ℃ for the hot water of 120 ℃-150 ℃ of the afterheat of hot water boiler for producing of air inlet desiccant cooling system; 110 ℃ of-130 ℃ of flue gases that afterheat of hot water boiler is discharged are for rotary dehumidifier dehumidifying.
The air inlet desiccant cooling system of described Gas-steam Combined Cycle, air inlet dehumidifying described in it, cooling, cooling.Atmospheric air is after rotary dehumidifier dehumidifying, because dehumidification process atmospheric air and rotary dehumidifier refill hygroscopic agent have certain heat transmission, in addition, atmospheric air is inlet air continuous release heat in dehumidification process, be that latent heat is converted into sensible heat, therefore inlet air temperature when rotary wheel dehumidifying increases, with air-water heat exchanger I and the cooling of tap water heat-shift, make dehumidifying after intake air temperature slightly lower than atmospheric air temperature, reduce inlet air required cold when cooling, for the tap water of lowering the temperature, can be used for the water inlet of steam or afterheat of hot water boiler, last inlet air is cooling through air-water heat exchanger II.Rotary dehumidifier is because the flue-gas temperature for dehumidifying reaches 120 ℃ of left and right, and dehumidification rate is high, and effect on moisture extraction is good, and the variation of atmospheric temperature and humidity is relatively little on the impact of rotary dehumidifier, can ignore.
The air inlet desiccant cooling system of described Gas-steam Combined Cycle, described in it when atmospheric temperature rises rotary dehumidifier and cooling tower coordinated regulation lithium-bromide absorption-type refrigerating machine refrigerating capacity.Atmospheric air air inlet MAF after rotary dehumidifier dehumidifying increases, latent heat reduces, sensible heat increases, by air-water heat exchanger I, remove the sensible heat of increase, then cooling through air-water heat exchanger II, intake air mass flow is owing to cooling, density increases, mass flow rate further increases, that is to say by the MAF in gas-turbine combustion chamber and increase, gas turbine output power and efficiency rise, because inlet air has passed through rotary wheel dehumidifying and cooling and dehumidifying, the air that enters firing chamber can not absorb heat because of airborne steam gasification, the smoke outlet temperature of firing chamber rises, therefore, input gas temperature and the flow of boiler using steam residual-heat all rise, although boiler using steam residual-heat pinch-point temperature difference is little, but import flue gas flow has increased, can not cause boiler using steam residual-heat temperature of exhaust fume to reduce because atmospheric temperature rises.Therefore, when atmospheric temperature rises, the temperature of exhaust fume of boiler using steam residual-heat and flow all rise, by to the dehumidifying of inlet air, cooling and cooling, when having realized regulation and control atmospheric temperature and rising, the temperature of exhaust fume of boiler using steam residual-heat and flow all decline and the rough sledding that causes lithium-bromide absorption-type refrigerating machine refrigerating capacity to decline.In addition, while rising due to atmospheric temperature, the cooling water temperature of cooling tower rises, and causes lithium-bromide absorption-type refrigerating machine refrigerating capacity to decline and the increase of import hot water flow demand, therefore, reduces the increase that cooling water temperature is conducive to refrigerating capacity.If can realize the effective control to intake temperature with air inlet dehumidifying coordinated regulation, thereby overcome atmospheric temperature variation, the performance of Gas-steam Combined Cycle and variable working condition be affected to shortcoming greatly.
The beneficial effects of the utility model are, by the compressor air inlet machine dehydration of air to Gas-steam Combined Cycle, cooling, cooling and the dehumidifying of rotary dehumidifier and the coordinated regulation of cooling tower cooling water temperature, the atmospheric temperature property that has solved Gas-steam Combined Cycle and charge air-cooling system produces a disadvantageous reciprocal effect difficult problem; Solved atmospheric temperature and changed the performance of Gas-steam Combined Cycle and variable working condition are affected to shortcoming greatly, made the operation of Gas-steam Combined Cycle more stable, safer, more reliable; Further excavated air inlet cooling to improving the potentiality of Gas-steam Combined Cycle output power, efficiency and economic benefit; Be conducive to the cooling heating and power generation system based on Gas-steam Combined Cycle the dynamically allotment of cool and thermal power load, with electric power system cooperative compensating, the utilization of high efficiency of energy step and security of system stable operation.
Accompanying drawing explanation
Fig. 1 is the integrated morphology figure of air inlet desiccant cooling system and Gas-steam Combined Cycle
Embodiment
The utility model provides a kind of air inlet desiccant cooling system of Gas-steam Combined Cycle, as shown in Figure 1.Because air inlet desiccant cooling system is not an isolated system, need consider its embodiment together with Gas-steam Combined Cycle and cooling heating and power generation system.Below by accompanying drawing explanation and embodiment, the utility model is described further.
Mode of execution 1
Summer mode of execution: the flue gas of discharging as Fig. 1 boiler using steam residual-heat is produced hot water as the thermal source of afterheat of hot water boiler and is produced cold water for lithium-bromide absorption-type refrigerating machine, for the cooling inlet air of air-water heat exchanger II; The flue gas that afterheat of hot water boiler is discharged is for rotary dehumidifier to atmospheric air (inlet air) dehumidifying, and the dry air after dehumidifying, through air-water heat exchanger I cooling, can be used as water inlet or other purposes of steam and afterheat of hot water boiler for the tap water of lowering the temperature.Dry air after cooling enters gas turbine as inlet air through gas compressor after air-water heat exchanger II is cooling.When implement summer because the cooling required refrigerating capacity of air inlet is large, large to hot water flow demand, cooling water temperature that can be by reducing cooling tower is as improving lithium-bromide absorption-type refrigerating machine refrigerating capacity and reducing the supplementary means of hot water flow demand, and the suggestion of air inlet cooling air temperature is controlled at 15 ℃ of left and right (iso standard) in summer.
Mode of execution 2
Spring and autumn mode of execution: spring and autumn is because atmospheric temperature reduces, the cooling demand to refrigerating capacity of inlet air reduces relative summer, air inlet cooling air temperature can be controlled to output power and efficiency that 10 ℃-15 ℃ (iso standards) further improve Gas-steam Combined Cycle; Also can determine air inlet chilling temperature according to actual thermoelectricity conditions of demand, unnecessary hot water can be used for the domestic hot-water supply of cooling heating and power generation system.
Mode of execution 3
Winter mode of execution: at atmospheric temperature, during higher than 15 ℃, air inlet chilling temperature can be dropped to below 10 ℃, but cold water temperature must be controlled at more than 5 ℃, prevent lithium-bromide solution crystallization; Also air inlet chilling temperature can be controlled to 15 ℃ (iso standards), hot water is for cooling heating and power generation system heat supply.At atmospheric temperature, during lower than 15 ℃, can stop the operation of air inlet desiccant cooling system, by the flue gas re-injection afterheat of hot water boiler for rotary dehumidifier, increase hot water flow, hot water is for cooling heating and power generation system heat supply.
Be more than mode of execution principle of the present utility model and exemplary embodiment, those skilled in the art can determine air inlet chilling temperature according to climatic conditions with reference to mode of execution principle and mode of execution, generally advise that air inlet chilling temperature is controlled at 15 ℃ (iso standards), because generally take the parameter of iso standard operating mode during cooling heating and power generation system in design is foundation, be conducive to like this cool and thermal power load Dynamic Matching and with the cooperative compensating operation of electric power system.
Claims (2)
1. an air inlet desiccant cooling system for Gas-steam Combined Cycle, is comprised of lithium-bromide absorption-type refrigerating machine, afterheat of hot water boiler, cooling tower, rotary dehumidifier, air-water heat exchanger I, air-water heat exchanger II; It is characterized in that lithium-bromide absorption-type refrigerating machine is connected with afterheat of hot water boiler, air-water heat exchanger II, cooling tower respectively, rotary dehumidifier is connected with afterheat of hot water boiler, air-water heat exchanger I respectively, air-water heat exchanger I connects air-water heat exchanger II, afterheat of hot water boiler is connected with the boiler using steam residual-heat of Gas-steam Combined Cycle, and air-water heat exchanger II is connected with the gas compressor entrance of Gas-steam Combined Cycle.
2. the air inlet desiccant cooling system of Gas-steam Combined Cycle as claimed in claim 1, the compressor air inlet machine dehumidifying, cooling and the cooling work flow process that it is characterized in that Gas-steam Combined Cycle, the middle temperature flue gas that the boiler using steam residual-heat of Gas-steam Combined Cycle is discharged is as the thermal source of afterheat of hot water boiler for producing hot water, the hot water of afterheat of hot water boiler drives lithium-bromide absorption-type refrigerating machine to air-water heat exchanger II, to provide cold water, cooling press mechanism of qi inlet air; The low-temperature flue gas that afterheat of hot water boiler the is discharged rotary dehumidifier of flowing through is removed the airborne water vapor of compressor air inlet machine, and the dry air of generation carries out heat exchange cooling through air-water heat exchanger I and tap water, the sensible heat of increase while removing dehumidifying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520309.4U CN203532055U (en) | 2013-08-26 | 2013-08-26 | Gas-steam combined circulation type air inlet dehumidifying and cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320520309.4U CN203532055U (en) | 2013-08-26 | 2013-08-26 | Gas-steam combined circulation type air inlet dehumidifying and cooling system |
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| CN203532055U true CN203532055U (en) | 2014-04-09 |
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| CN201320520309.4U Expired - Lifetime CN203532055U (en) | 2013-08-26 | 2013-08-26 | Gas-steam combined circulation type air inlet dehumidifying and cooling system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397943A (en) * | 2013-08-26 | 2013-11-20 | 陈戈 | Fuel gas-steam combined cycle inlet air dehumidifying and cooling system and method |
| CN104832289A (en) * | 2015-05-06 | 2015-08-12 | 湖南康拜恩分布式能源科技有限公司 | Combined cooling, heating, and power (CCHP) station system and method of gas turbine and gas internal combustion engine |
| CN107401457A (en) * | 2016-05-18 | 2017-11-28 | 北京亿玮坤节能科技有限公司 | It is a kind of to utilize the energy-efficient air cooling system for cooling down CCPP unit air intake air |
| CN114100325A (en) * | 2021-11-26 | 2022-03-01 | 华能重庆两江燃机发电有限责任公司 | Cooling air drying and dehumidifying system for turbine rotor of gas turbine |
-
2013
- 2013-08-26 CN CN201320520309.4U patent/CN203532055U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397943A (en) * | 2013-08-26 | 2013-11-20 | 陈戈 | Fuel gas-steam combined cycle inlet air dehumidifying and cooling system and method |
| CN104832289A (en) * | 2015-05-06 | 2015-08-12 | 湖南康拜恩分布式能源科技有限公司 | Combined cooling, heating, and power (CCHP) station system and method of gas turbine and gas internal combustion engine |
| CN107401457A (en) * | 2016-05-18 | 2017-11-28 | 北京亿玮坤节能科技有限公司 | It is a kind of to utilize the energy-efficient air cooling system for cooling down CCPP unit air intake air |
| CN114100325A (en) * | 2021-11-26 | 2022-03-01 | 华能重庆两江燃机发电有限责任公司 | Cooling air drying and dehumidifying system for turbine rotor of gas turbine |
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Owner name: HUNAN COMBINE DISTRIBUTED ENERGY TECHNOLOGY CO., L Free format text: FORMER OWNER: CHEN GE Effective date: 20140504 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140504 Address after: 410205 Hunan province Changsha City Lugu high tech Development Zone, Road No. 662 Building No. 3-53 Software Center Patentee after: Hunan Combine Distributed Energy Technology Co., Ltd. Address before: 702, room 13, building 9, 410076 Leng Ling Road, Tianxin District, Hunan, Changsha Patentee before: Chen Ge |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140409 Effective date of abandoning: 20160120 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |