CN103352735A - Method and device for condensed water supercooling beneficiation treatment of thermal power generating unit steam turbine - Google Patents
Method and device for condensed water supercooling beneficiation treatment of thermal power generating unit steam turbine Download PDFInfo
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Abstract
The invention relates to a method and device for condensed water supercooling beneficiation treatment of a thermal power generating unit steam turbine. The method and device are characterized in that first, part of condensed water in a condenser hot well of a thermal power generating unit is pumped out, an external condensed water cooler or an internal condensed water cooler is used for conducting supercooling on condensed water, then the supercooled condensed water is used for carrying out atomized spraying on the throat portion of a condenser, a steam exhaust port and a draining steam exhaust port of the turbine, an inlet of steam extraction equipment and the like respectively, the atomized and supercooled condensed water is used for conducting intensive mixing heat exchange with residual steam in a space on the steam side of the condenser, and thus the working efficiency of the condenser is improved; second, on-line cleaning and off-line cleaning are carried out on a heat exchange pipeline so that the cleanliness of a heat exchange tube bundle of the condenser can be kept; third, operation maintenance and overhauling of a system device are enhanced, and the vacuum airtightness of the system is maintained. According to the method and device for condensed water supercooling beneficiation treatment of the thermal power generating unit steam turbine, the condensed water in the hot well is cooled and supercooled through the supercooling cooler, nozzles are used for achieving atomized spraying, so that the steam load inside the condenser and the steam component on the steam side are reduced, the output power of a vacuum pump is increased, and the purpose for improving the vacuum degree of the unit is achieved.
Description
Technical field
The present invention relates to a kind of fired power generating unit steam turbine hot-well depression synergistic processing method and device, be applicable to improve steam turbine class power generating equipment degree of vacuum.Belong to the power generating equipment technical field.
Background technique
Improve the Economy of steam-turbine plant, mainly contain two approach: the one, the internal efficiency of raising steam turbine namely is the every loss that reduces in the Turbine Flow Path; The 2nd, the thermal efficiency of cycle of raising device.Improving thermal efficiency of cycle has both direction, and the one, improve initial conditions and improve average heating-up temperature; The 2nd, reduce average exothermic temperature, the topmost task of Turbine Cold Junction that Here it is.
The cold junction working state of fired power generating unit steam turbine is an extremely important factor that affects the whole efficiency of unit, take a 600MW unit as example, the every decline 1Kpa of unit vacuum under declared working condition, the net coal consumption rate of unit approximately will increase 3g/kWh, utilize per year hour calculating in 5000 hours, 9000 tons in unit many consumption marks in every year coal, according to 800 yuan of calculating of mark coal per ton, the annual fuel cost that directly increases is 7,200,000 yuan.Therefore, current Design of Steam Turbine manufacturing technology quite advanced and mature, in the situation that the various subsidiary engines of industry and systematic energy-saving technology are fully used, how promoting and keep the desirable vacuum running state of unit, is a very valuable little input of Energy-saving for Thermal Power Units consumption reduction work, the large research topic of repayment and fast repayment.
The Turbine Cold Junction system mainly is comprised of turbine discharge, vapour condenser, recirculated cooling water, condensate system and vaccum-pumping equipment.Wherein, vapour condenser is the unit turbine discharge that condenses, and forms the Turbine Cold Junction vacuum, realizes the most important equipment of system's steam/water circulating.In the power generation plant technology equipment, the Turbine Cold Junction operation is subjected to the impact of circulating water temperature, cooling water flow and pipe cleanness, have following problem: 1, unit is when summer condition circulating water temperature off-design value is higher, and the condenser vacuum off-design is larger, and maximum can differ about 5～6kPa; 2, condenser vacuum and circulating water flow magnitude relation are obvious, and when particularly circulating water temperature was higher, circulating water flow descended more obvious on the impact of vacuum; 3, the cooling tube turbidity test are poor, and the vapour condenser radiating effect is poor, cause the vapour condenser internal vacuum to reduce; 4, the Steam Side of Condenser air accumulation on the Performance of Condensers impact obviously.
For above problem, the measure of generally adopting at present is:
1, increase circulating water pump number of units increases circulating water flow; 2, increase the heat exchange area of vapour condenser during Construction of Unit; 3, by maintenance and maintenance to vapour device heat exchanger pipe bundle, guarantee the turbidity test of pipeline; 4, strengthening system is safeguarded, the vacuum tightness that keeping system is good, etc.，
Although above measure can be transformed the working state difficult problem of Turbine Cold Junction to a certain extent, what pay is to increase project construction investment, increase equipment operating cost, increase operating maintenance workload, and income is limited.
Summary of the invention
One of purpose of the present invention is in order to improve the generator set internal vacuum to enhance productivity, to reduce production costs, a kind of fired power generating unit steam turbine hot-well depression synergistic processing method to be provided.
Two of purpose of the present invention is for a kind of fired power generating unit steam turbine hot-well depression synergy treatment device is provided, this device can guarantee the unit equipment internal vacuum stability, enhance productivity and reduce cost.
One of purpose of the present invention can reach by following measure:
Fired power generating unit steam turbine hot-well depression synergistic processing method is characterized in that comprising the steps:
1) the part water of condensation in the thermal power unit condenser hot well is pumped, through external or built-in condensate cooler, make hot-well depression, then locate atomizing spray in import of the steam-expelling port of the throat of vapour condenser, steam turbine and hydrophobic steam-expelling port, the equipment that draws gas etc. respectively with these excessively cold water of condensation, utilize the abundant mixed heat transfer of steam remaining in these excessively cold water of condensation that are atomized and the Steam Side of Condenser space, to improve the working efficiency of vapour condenser;
2) the heat exchanging pipeline cleans online with off-line and cleans, to keep the turbidity test of heat exchange tube of condenser bundle;
3) reinforcement is to operation maintenance and the maintenance of system equipment, the vacuum tightness of keeping system.
One of purpose of the present invention can also reach by following measure:
Further, in condenser hotwell, away from the position perforate water intaking of condensate pump water intake, the part water of condensation is pumped by water pump, after inflow-rate of water turbine and pressure adjustment, by an external cooler, that it is excessively cold; Then with these excessively cold water of condensation respectively at the suction port atomizing spray of the steam-expelling port of the throat of vapour condenser, steam turbine and hydrophobic steam-expelling port, the equipment that draws gas, utilize the abundant mixed heat transfer of steam remaining in these excessively cold water of condensation that are atomized and the Steam Side of Condenser space, to improve the working efficiency of vapour condenser.
Further, in Condenser's Hot Well, away from the position perforate water intaking of condensate pump water intake, pump by water pump, through inflow-rate of water turbine and pressure adjustment, then by an external cooler.The cooling water water source of cooler can extract or other external cooling water sources from the female pipe of the water inlet of vapour condenser circulating water.
Two of purpose of the present invention can reach by following measure:
Fired power generating unit steam turbine hot-well depression synergy treatment device, comprise the fired power generating unit steam turbine, vapour condenser and be arranged on hot well in the vapour condenser, its structural feature is: the position away from the condensate pump water intake in hot well arranges intake, described intake is by the excessively cold effect pump of carrying, flow is connected one of water intake of hot-well depression device with pressure regulator, two of the water intake of hot-well depression device is communicated with cooling water source, form the circulating water water intake, one of water outlet of hot-well depression device is communicated with the throat of vapour condenser, the suction port of the steam-expelling port of steam turbine and hydrophobic steam-expelling port and the equipment that draws gas forms the atomizing spray structure; Two of the water outlet of hot-well depression device is communicated with circulating water backwater end, the formation circulating water backwater mouth of vapour condenser.
Two of purpose of the present invention can also reach by following measure:
Further, throat, small turbine steam-expelling port, the hydrophobic steam-expelling port of receiving vapour condenser and the equipment suction port place of drawing gas are drawn in the supercooled water water outlet of hot-well depression device output, form four the road or multichannel aerosol dispersion spray structure, to strengthen the area of contact of supercooled water and hot steam, realize the rapid mixing heat exchange, improve the degree of vacuum of unit.
Further, pressure and the flow of the supercooled water of hot-well depression device output are adjustable in 0～100% scope according to actual operating mode and the state of unit; Crossing the cold effect pump of carrying is made of constant speed pump or water pump that RHVC is set.
Further, the outlet pipe tail end that is connected with one of water outlet of hot-well depression device is equipped with several nozzles, described nozzle is positioned at condenser throat, small turbine steam-expelling port, hydrophobic steam-expelling port and the equipment suction port place of drawing gas, nozzle has flow adjusting structure everywhere, to distribute according to operating conditions.
Further, described hot-well depression device is board-like or tubular cooler, or is other the efficient heat transmission equipments except board-like, tubular cooler.
Further, described hot-well depression device is arranged in vapour condenser inside or vapour condenser outside.
Further, the excessively cold effect pump of carrying arranges one or more.
The present invention has following outstanding beneficial effect:
1, the present invention passed through cold cooler and cooled off the water of condensation in the hot well cold and spray by nozzle atomization, after condenser throat sprays out with Steam Side of Condenser in residue vapor carry out completely mixed heat transfer, can be rapidly and efficiently with the steam condensation in the sprinkling zone, greatly reduce the interior steam load of vapour condenser and the steam component of vapour side, improve exerting oneself of vacuum pump, reach the purpose of the degree of vacuum that improves unit.
2, the mode cooling steam of the present invention by in vapour condenser, spraying, mixed heat transfer efficient is very high, and heat transfer effect is reduced by the impact of system's inner accumulated air and the tube bank factor such as dirty greatly, and vapour condenser can stably keep higher vacuum.
3, the apparatus and method that the present invention relates to by employing, solve the unit in summer undercapacity, the problem that load is unstable and less economical, when vapour condenser designs according to hot-well depression processing Synergistic technique, can suitably reduce the heat exchange area of vapour condenser, reduce the equipment appearance size, reduce engineering cost.
Description of drawings
Fig. 1 is the structural drawing of the specific embodiment of the invention 1.
Embodiment
Specific embodiment:
With reference to Fig. 1, the fired power generating unit steam turbine hot-well depression synergy treatment device that present embodiment relates to, comprise the fired power generating unit steam turbine, vapour condenser 1 and be arranged on hot well 2 in the vapour condenser, position away from the condensate pump water intake in hot well 2 arranges intake, described intake is by the excessively cold effect pump 3 of carrying, flow is connected one of water intake that connects hot-well depression device 5 with pressure regulator, two of the water intake of hot-well depression device 5 is communicated with cooling water source, form circulating water water intake 5-1, one of water outlet of hot-well depression device 5 is communicated with the throat of vapour condenser 1, the suction port of the steam-expelling port of steam turbine and hydrophobic steam-expelling port and the equipment that draws gas forms the atomizing spray structure; Two of the water outlet of hot-well depression device 5 is communicated with circulating water backwater end, the formation circulating water backwater mouth 5-2 of vapour condenser.
In the present embodiment:
The water outlet of hot-well depression device 5 is after excess pressure and flow adjustment, drawing respectively throat, turbine discharge mouth, the hydrophobic steam-expelling port of receiving vapour condenser 1 and the equipment suction port that draws gas etc. locates, form four road aerosol dispersion spray structures, to strengthen the area of contact of supercooled water and hot steam, realize the rapid mixing heat exchange, improve the degree of vacuum of unit.The cooling water of subcooler is taken from the female pipe of unit condenser circulating water water inlet or other cooling water sources.Cross the cold effect pump of carrying one or more can be set.Crossing the cold effect pump of carrying can take constant speed pump or RHVC is set; Cross the cold effect pump discharge of carrying effective pressure and flow regulator can be set; At the described excessively cold effect pump 3 outlet pipe tail ends of carrying nozzle is installed, nozzle is positioned at vapour condenser 1 throat, small turbine steam-expelling port, hydrophobic steam-expelling port and the equipment suction port place of drawing gas, and flow can rationally distribute according to operating conditions everywhere.Further, the cold cooler 5 of described mistake is panel cooler or tubular cooler or other high-efficiency heat exchanger equipments.
With reference to Fig. 1, present embodiment can arrange one or more excessively cold effect pump of carrying, and also can adopt the recirculation water route of former condensate pump to replace the cold pump water effect of carrying the effect pump according to reality.
Present embodiment position perforate away from the condensate pump water intake in hot well 2 is fetched water, pump by the excessively cold effect pump 3 of carrying, after inflow-rate of water turbine and pressure regulator 4 adjustment, the external hot-well depression device 5 that circulates, the cooling water source of hot-well depression device 5 are taken from the female pipe of circulating water water inlet or other external cooling water sources.The supercooled water of hot-well depression device 5 outlet draws the suction port of the steam-expelling port of the throat that receives vapour condenser 1, steam turbine and hydrophobic steam-expelling port, the equipment that draws gas etc. and locates to form atomizing spray, utilize the abundant mixed heat transfer of steam remaining in these excessively cold water of condensation that are atomized and the Steam Side of Condenser space, to improve the working efficiency of vapour condenser.
The working principle of present embodiment is:
Contrast Fig. 1, in former power station s cold end system, increase sprinkling equipment, be divided into four tunnel (or multichannels) the unit relevant portion is cooled off crossing supercooled water that cold but equipment makes, one: after the part water of condensation passed through cold cooler and pressure, flow and adjust, form atomizing spray, the residue vapor that sprays out in rear and the Steam Side of Condenser is carried out completely mixed heat transfer, with the steam condensation in the sprinkling zone, greatly reduce the interior steam load of vapour condenser and the steam component of vapour side, keep the stability of vapour condenser internal vacuum.After two, the most of residue vapor in the Steam Side of Condenser of major effect unit vacuum is condensed, greatly reduce the load of vaccum-pumping equipment, the steam component reduces greatly in the medium that vaccum-pumping equipment is released, can efficiently the leakage air in the Steam Side of Condenser in time be extracted out, further improve the heat exchange efficiency of bank of condenser pipes.What three, the steam in this device supercooled water and the vapour condenser carried out is mixed heat transfer, heat transfer effect is existed by intrasystem residual air and the degree of fouling of tube bank concerns not quite, more can effectively guarantee the efficient operation of vapour condenser cold junction under various unfavorable operating modes and condition.
The fired power generating unit steam turbine hot-well depression synergistic processing method that present embodiment relates to comprises the steps:
1) the part water of condensation in the thermal power unit condenser hot well is pumped, through an external cooler, make it excessively cold, then with these excessively cold water of condensation respectively at the import atomizing spray of the steam-expelling port of the throat of vapour condenser, steam turbine and hydrophobic steam-expelling port, the equipment that draws gas, utilize the abundant mixed heat transfer of steam remaining in these excessively cold water of condensation that are atomized and the Steam Side of Condenser space, to improve the working efficiency of vapour condenser;
2) the heat exchanging pipeline cleans online with off-line and cleans, to keep the turbidity test of heat exchange tube of condenser bundle;
3) reinforcement is to operation maintenance and the maintenance of system equipment, the vacuum tightness of keeping system.
Further, in condenser hotwell, away from the position perforate water intaking of condensate pump water intake, the part water of condensation is pumped by water pump, after inflow-rate of water turbine and pressure adjustment, by an external cooler, that it is excessively cold.Then with these excessively cold water of condensation respectively at the suction port atomizing spray of the steam-expelling port of the throat of vapour condenser, steam turbine and hydrophobic steam-expelling port, the equipment that draws gas, utilize the abundant mixed heat transfer of steam remaining in these excessively cold water of condensation that are atomized and the Steam Side of Condenser space, to improve the working efficiency of vapour condenser.
Further, in Condenser's Hot Well, away from the position perforate water intaking of condensate pump water intake, pump by water pump, through inflow-rate of water turbine and pressure adjustment, then by an external cooler.The cooling water water source of cooler can extract or other external cooling water sources from the female pipe of the water inlet of vapour condenser circulating water.
Economic benefit benefit estimation of the present invention is as follows:
Calculate as an example of a 330MW unit example, this unit adopts circulating water cooling system, and the hot well condensing water temperature is 46.0 ℃, summer vacuum off-design value 5.7KPa, the unit net coal consumption rate increases 13g/kWh approximately.After this device is installed, take by crossing circulating load that cold cooler follows supercooled water as 300t/h, drop in temperature to 34 ℃ after hot-well depression is processed, then the enthalpy drop value Q after the hot-well depression crosses and coldly is:
Q
Cross cold=1000D
Cross cold(h
Water of condensation-h
Supercooled water)
=1000×300×（193.13-142.99）=15042000（kJ/h）
In the formula:
Q
Cross cold-water of condensation passed through cold after liberated heat (kJ/h);
D
Cross coldThe condensing water flow (t/h) of-mistake cryogenic treatment;
h
CondenseThe specific enthalpy of-water of condensation (kJ/kg);
h
Supercooled waterThe specific enthalpy of-supercooled water (kJ/kg);
For the vapour condenser under the high vacuum, the latent heat of vaporization excursion of emitting when the 1kg steam discharge condenses is very little, generally about 2140～2220kJ/kg, get its mean value, be that the latent heat of vaporization Q latent heat that the 1kg steam discharge is emitted when condensing is 2177kJ/kg, therefore, the condensable vapors flow is behind the supercooled water after the processing and the steam discharge mixed heat transfer:
Q
Condense=Q
Cross cold/ (Q
Latent heat* 1000)=15042000/ (2177 * 1000)=6.9(t/h)
That is to say, after supercooled water after processing and steam discharge carry out efficient mixed heat transfer, again can be with 6.9t/h steam condensation remaining in the vapour condenser, because when steam condensation becomes water, volume will reduce about 30000 times, thereby condenser vacuum can improve conservative estimation greatly, condenser vacuum can improve 1～2kPa, and the unit net coal consumption rate can reduce about 3～6g/kWh.
The above; only be the better specific embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the scope that the present invention discloses; be equal to replacement or change according to technological scheme of the present invention and inventive concept thereof, all belonged to protection scope of the present invention.
Claims (10)
1. fired power generating unit steam turbine hot-well depression synergistic processing method is characterized in that comprising the steps:
1) the part water of condensation in the thermal power unit condenser hot well is pumped, through external or built-in condensate cooler, make hot-well depression, then locate atomizing spray in import of the steam-expelling port of the throat of vapour condenser, steam turbine and hydrophobic steam-expelling port, the equipment that draws gas etc. respectively with these excessively cold water of condensation, utilize the abundant mixed heat transfer of steam remaining in these excessively cold water of condensation that are atomized and the Steam Side of Condenser space, to improve the working efficiency of vapour condenser;
2) the heat exchanging pipeline cleans online with off-line and cleans, to keep the turbidity test of heat exchange tube of condenser bundle;
3) reinforcement is to operation maintenance and the maintenance of system equipment, the vacuum tightness of keeping system.
2. fired power generating unit steam turbine hot-well depression synergistic processing method according to claim 1, it is characterized in that: the position perforate away from the condensate pump water intake in condenser hotwell is fetched water, the part water of condensation is pumped by water pump, after inflow-rate of water turbine and pressure adjustment, by an external cooler, that it is excessively cold; Then with these excessively cold water of condensation respectively at the suction port atomizing spray of the steam-expelling port of the throat of vapour condenser, steam turbine and hydrophobic steam-expelling port, the equipment that draws gas, utilize the abundant mixed heat transfer of steam remaining in these excessively cold water of condensation that are atomized and the Steam Side of Condenser space, to improve the working efficiency of vapour condenser.
3. fired power generating unit steam turbine hot-well depression synergistic processing method according to claim 2, it is characterized in that: the position perforate away from the condensate pump water intake in Condenser's Hot Well is fetched water, pump by water pump, through inflow-rate of water turbine and pressure adjustment, then by an external cooler.The cooling water water source of cooler can extract or other external cooling water sources from the female pipe of the water inlet of vapour condenser circulating water.
4. fired power generating unit steam turbine hot-well depression synergy treatment device, comprise the fired power generating unit steam turbine, vapour condenser (1) and be arranged on hot well (2) in the vapour condenser, it is characterized in that: the position away from the condensate pump water intake in hot well (2) arranges intake, described intake is by the excessively cold effect pump (3) of carrying, flow is connected 4 with pressure regulator) connect one of water intake of hot-well depression device (5), two of the water intake of hot-well depression device (5) is communicated with cooling water source, form circulating water water intake (5-1), one of water outlet of hot-well depression device (5) is communicated with the throat of vapour condenser (1), the suction port of the steam-expelling port of steam turbine and hydrophobic steam-expelling port and the equipment that draws gas forms the atomizing spray structure; Two of the water outlet of hot-well depression device (5) is communicated with circulating water backwater end, the formation circulating water backwater mouth (5-2) of vapour condenser.
5. fired power generating unit steam turbine hot-well depression synergy treatment device according to claim 4, it is characterized in that: throat, small turbine steam-expelling port, the hydrophobic steam-expelling port of receiving vapour condenser (1) and the equipment suction port place of drawing gas are drawn in the supercooled water water outlet of hot-well depression device (5) output, form four the road or multichannel aerosol dispersion spray structure, to strengthen the area of contact of supercooled water and hot steam, realize the rapid mixing heat exchange, improve the degree of vacuum of unit.
6. it is characterized in that according to claim 4 or 5 described fired power generating unit steam turbine hot-well depression synergy treatment device: pressure and the flow of the supercooled water of hot-well depression device (5) output are adjustable in 0～100% scope according to actual operating mode and the state of unit; Crossing the cold effect pump of carrying is made of constant speed pump or water pump that RHVC is set.
7. according to claim 4 or 5 described fired power generating unit steam turbine hot-well depression synergy treatment device, it is characterized in that: the outlet pipe tail end that is connected with one of water outlet of hot-well depression device (5) is equipped with several nozzles, described nozzle is positioned at vapour condenser (1) throat, small turbine steam-expelling port, hydrophobic steam-expelling port and the equipment suction port place of drawing gas, nozzle has flow adjusting structure everywhere, to distribute according to operating conditions.
8. according to claim 4 or 5 described fired power generating unit steam turbine hot-well depression synergy treatment device, it is characterized in that: described hot-well depression device (5) is board-like or tubular cooler, or is other the efficient heat transmission equipments except board-like, tubular cooler.
9. it is characterized in that according to claim 4 or 5 described fired power generating unit steam turbine hot-well depression synergy treatment device: described hot-well depression device (5) is arranged in vapour condenser inside or vapour condenser is outside.
10. it is characterized in that according to claim 4 or 5 described fired power generating unit steam turbine hot-well depression synergy treatment device: the excessively cold effect pump (3) of carrying arranges one or more.
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| CN105300126A (en) * | 2015-11-25 | 2016-02-03 | 谢祚祥 | System for increasing vacuum degree of condenser |
| CN106677839A (en) * | 2017-01-13 | 2017-05-17 | 沈阳绿色环保能源科技有限公司 | System and method for converting hot water into mechanical power |
| CN107321127A (en) * | 2017-07-06 | 2017-11-07 | 大唐东北电力试验研究所有限公司 | Ammoniacal liquor recovery system and method in thermal power plant's condenser |
| CN108844761A (en) * | 2018-06-01 | 2018-11-20 | 中国电建集团山东电力建设第工程有限公司 | A kind of condenser repair method |
| CN110441011A (en) * | 2019-07-30 | 2019-11-12 | 辽宁科技大学 | A kind of quick leakage inspection method of gas turbine air cooling system TCA cooler |
| CN114234663A (en) * | 2021-12-01 | 2022-03-25 | 东方电气集团东方汽轮机有限公司 | Industrial water replenishing and deoxidizing system and method for steam turbine |
| CN114688890A (en) * | 2022-05-31 | 2022-07-01 | 杭州国能汽轮工程有限公司 | Condenser |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105300126A (en) * | 2015-11-25 | 2016-02-03 | 谢祚祥 | System for increasing vacuum degree of condenser |
| CN106677839A (en) * | 2017-01-13 | 2017-05-17 | 沈阳绿色环保能源科技有限公司 | System and method for converting hot water into mechanical power |
| CN107321127A (en) * | 2017-07-06 | 2017-11-07 | 大唐东北电力试验研究所有限公司 | Ammoniacal liquor recovery system and method in thermal power plant's condenser |
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| CN110441011A (en) * | 2019-07-30 | 2019-11-12 | 辽宁科技大学 | A kind of quick leakage inspection method of gas turbine air cooling system TCA cooler |
| CN114234663A (en) * | 2021-12-01 | 2022-03-25 | 东方电气集团东方汽轮机有限公司 | Industrial water replenishing and deoxidizing system and method for steam turbine |
| CN114234663B (en) * | 2021-12-01 | 2023-10-27 | 东方电气集团东方汽轮机有限公司 | Water supplementing and deoxidizing system and method for steam turbine industry |
| CN114688890A (en) * | 2022-05-31 | 2022-07-01 | 杭州国能汽轮工程有限公司 | Condenser |
| CN114688890B (en) * | 2022-05-31 | 2022-09-13 | 杭州国能汽轮工程有限公司 | Condenser |
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