WO2017156859A1 - Générateur d'énergie éolienne en mer à structure de turbine éolienne en forme de v - Google Patents

Générateur d'énergie éolienne en mer à structure de turbine éolienne en forme de v Download PDF

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Publication number
WO2017156859A1
WO2017156859A1 PCT/CN2016/082230 CN2016082230W WO2017156859A1 WO 2017156859 A1 WO2017156859 A1 WO 2017156859A1 CN 2016082230 W CN2016082230 W CN 2016082230W WO 2017156859 A1 WO2017156859 A1 WO 2017156859A1
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WO
WIPO (PCT)
Prior art keywords
wind turbine
wind wheel
rotating arm
rotating
arm
Prior art date
Application number
PCT/CN2016/082230
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English (en)
Chinese (zh)
Inventor
张远林
Original Assignee
福建通尼斯新能源科技有限公司
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Publication date
Application filed by 福建通尼斯新能源科技有限公司 filed Critical 福建通尼斯新能源科技有限公司
Publication of WO2017156859A1 publication Critical patent/WO2017156859A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • F03D3/064—Fixing wind engaging parts to rest of rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/02—Controlling wind motors  the wind motors having rotation axis substantially parallel to the air flow entering the rotor
    • F03D7/022—Adjusting aerodynamic properties of the blades
    • F03D7/0236—Adjusting aerodynamic properties of the blades by changing the active surface of the wind engaging parts, e.g. reefing or furling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D7/00—Controlling wind motors 
    • F03D7/06—Controlling wind motors  the wind motors having rotation axis substantially perpendicular to the air flow entering the rotor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2240/00—Components
    • F05B2240/90—Mounting on supporting structures or systems
    • F05B2240/95—Mounting on supporting structures or systems offshore
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/727—Offshore wind turbines
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction

Definitions

  • the invention relates to a wind power generator, in particular to an offshore wind power generator with a V-type wind wheel structure, belonging to the technical field of wind power generation.
  • the principle of wind power generation is to use wind power to drive the rotation of the windmill blades, and then increase the speed of rotation by the speed increaser to promote the generator to generate electricity. Since wind power does not involve fuel problems and does not generate radiation or air pollution, it is a clean and environmentally friendly way of generating electricity. Especially with the continuous development and utilization of marine resources, the construction of offshore wind farms is forming a boom in the world. Many large wind farms stand on the innocent ocean. However, due to the difficulty in the construction of offshore wind farms, not only the scale of investment in labor and cost is unexpected, but also the unpredictable weather conditions will cause different degrees of damage to large-scale wind power equipment. Therefore, people are constantly searching for easy installation and maintenance, and reducing construction. Cost of wind turbine structure.
  • the wind turbine can be divided into two categories: horizontal axis wind turbine and vertical axis wind turbine.
  • the wind turbine rotating shaft of the vertical axis wind turbine is perpendicular to the ground or the airflow direction in the wind direction.
  • the wind does not need to be changed, so the vertical axis wind turbine not only simplifies the structural design, but also reduces the gyroscopic force when the wind wheel is against the wind.
  • the existing vertical axis wind turbine rotors are mostly located at the upper part of the rotating shaft of the wind wheel, and have a ⁇ -type or ⁇ -type structure, and the center of gravity is relatively high, which affects the stability of the wind turbine operation;
  • the wind turbine blades are installed in a fixed assembly manner. For wind farms standing on the innocent ocean, because the blade angle cannot be adjusted, the blade damage is easily caused in the case of heavy wind and waves, which affects the offshore wind turbine. Service life.
  • the object of the present invention is to provide an offshore wind turbine with a V-type wind wheel structure with low construction cost and convenient installation and maintenance, in order to adjust the wind turbine working condition in accordance with the sea wind and wave conditions. State, to avoid damage to the blade and extend the service life of offshore wind turbines.
  • An offshore wind turbine with a V-shaped wind wheel structure comprising a V-shaped wind wheel, a gear transmission mechanism, a coupling, a generator set and a base platform;
  • the V-shaped wind wheel is provided with three inclined rotating arms, the rotation The lower end of the arm is assembled with the wind wheel turntable, and the rotating arm is radially distributed around the rotating shaft of the wind wheel, and the blade is disposed at the upper end of each rotating arm; the lower end of the rotating shaft of the wind wheel passes through the gear transmission mechanism, the coupling and the generator set Connecting;
  • the generator set is mounted on the base platform;
  • the base platform is fixed to the sea bottom by sea piles or anchor chains.
  • the offshore wind turbine of the V-shaped wind wheel structure the lower end of the rotating arm is hingedly mounted on the wind wheel turntable, and the first pulling arm is disposed at the hinge end of the rotating arm, the lower end of the first pulling arm
  • the upper end is fixedly coupled to the rotating arm, and the upper end is hingedly assembled by the second arm pulling arm and the rotating arm retracting drive mechanism disposed on the rotating shaft of the wind wheel.
  • the rotating arm retracting drive mechanism comprises a first motor, a transmission assembly, a first lead screw and a lifting plate; the first motor is fixedly mounted on the rotating shaft of the wind wheel, The first motor output shaft is fixedly assembled with the driving wheel in the transmission assembly; the driven wheel of the transmission assembly is fixed at the lower end of the first screw; the lifting plate is fitted with the first lead screw, and is hingedly assembled on the outer edge of the lifting plate Two pulling arms.
  • the transmission assembly of the rotating arm retracting drive mechanism is preferably a gear transmission assembly.
  • the blade is a split structure, comprising an upper half blade and a lower half blade, wherein the upper half blade and the lower half blade are respectively connected to the rotating arm through an articulated structure
  • the rotating arm is a cavity structure, and a sliding slot hole is disposed on the upper and lower side walls thereof, and a blade retracting driving mechanism is disposed in the rotating arm cavity structure.
  • the blade retracting drive mechanism comprises a second motor, a second lead screw, a moving seat and a sealing plate for blocking the sliding holes of the upper and lower side walls of the rotating arm;
  • the second motor is fixedly mounted in the cavity of the rotating arm, and the second motor output shaft is fixedly assembled with the second lead screw;
  • the second lead screw and the moving seat are matched to form a moving part of the screw nut;
  • the moving seat and the sealing plate Fixed assembly
  • the plate comprises an upper sealing plate and a lower sealing plate, and a pulling rod is arranged on an outer side surface of the upper sealing plate and the lower sealing plate, the drawing rod passes through the sliding slot holes of the upper and lower side walls of the rotating arm, respectively, and the upper half blade and the lower half
  • the blade is hingedly assembled.
  • an offshore wind turbine is provided with a cable between each of the rotating arms and the rotating shaft of the wind wheel.
  • the gear transmission mechanism comprising a driving gear and a driven gear that mesh with each other, the driving gear is fixed on a rotating shaft of the wind wheel, and the driven gear passes through the coupling Generator set connection.
  • the offshore wind turbine of the above-mentioned V-type wind wheel structure, the driving gear and the driven gear of the gear transmission mechanism are bevel gear structures, and the generator set is horizontally arranged.
  • the number of the driven gears and the number of the couplings and the generator sets in the gear transmission mechanism are not less than four groups.
  • the invention adopts a V-shaped wind wheel structure. Since the rotating arm of the V-shaped wind wheel is arranged obliquely, the lower end is hingedly assembled with the wind wheel turntable, thereby effectively reducing the height of the center of gravity of the wind turbine wind wheel and ensuring the working of the offshore wind power generator.
  • the stability of the present invention provides a rotating arm retracting drive mechanism on the rotating shaft of the wind wheel, so that the rotation of the first motor, the transmission assembly, the first lead screw and the lifting plate in the rotating arm retracting drive mechanism can achieve the rotation
  • the control of the arm retracting state the invention also designs the blade as a split structure that is hingedly assembled with the upper end of the rotating arm, and at the same time, a blade retracting driving mechanism is arranged in the rotating arm cavity, so that the blade can be retracted by the driving mechanism
  • the combination of the two motor, the screw nut movement pair and the moving seat realizes the control of the state of the blade retracting; the invention can drive several groups of generator sets to operate by the rotating shaft of the wind wheel, thereby reducing the requirement for the installed capacity of the single group generator , thereby reducing the purchase cost of the power generation equipment;
  • the offshore wind turbine with the V-type wind wheel structure according to the present invention has a rotating arm and a wind wheel Disc, rotating arm assembly structure of the blade to facilitate disas
  • the invention has the characteristics of low construction cost, convenient installation and maintenance, and can adjust the angle of the rotating arm and the blade according to the sea wind and wave condition, avoiding the damage of the blade in the case of large wind and waves, and prolonging the service life of the offshore wind power generator. .
  • FIG. 1 is a schematic view of the structure of the present invention (the blade is in an open state);
  • Figure 2 is a schematic view of the structure of the wind wheel
  • Figure 3 is a schematic view of the rotating arm retracting drive mechanism
  • FIG. 4 is a schematic view showing the working principle of the transmission component in the rotating arm retracting drive mechanism
  • Figure 5 is a schematic view showing the assembly relationship of the rotating arm, the blade, and the blade retracting drive mechanism
  • Figure 6 is a schematic view of the blade retracting drive mechanism
  • Figure 7 is a schematic view showing the closed state of the blade
  • Figure 8 is a schematic view showing the rotating arm of the present invention in an open state and the blade in a closed state.
  • the list of labels in the figure is: 1, V-shaped wind wheel, 1-1, rotating arm, 1-1-1, chute hole, 1-2, first pulling arm, 1-3, wind wheel rotating shaft, 1-4, second pulling arm, 1-5, rotating arm retracting drive mechanism, 1-5-1, first motor, 1-5-2, transmission component, 1-5-2-1, driving wheel ,1-5-2-2, driven wheel, 1-5-3, first lead screw, 1-2-4, lifting plate, 1-6, blade, 1-6-1, upper half blade, 1 -6-2, lower half blade, 1-7, blade retracting drive mechanism, 1-7-1, second motor, 1-7-2, second lead screw, 1-7-3, moving seat, 1-7-4, sealing plate, 1-7-5, drawbar, 1-8, cable, 1-9, wind wheel turntable, 2, gear transmission mechanism, 3, coupling, 4, generator set, 5 , the base platform.
  • the present invention is an offshore wind turbine of a V-type wind wheel structure, which comprises a V-shaped wind wheel 1, a gear transmission mechanism 2, a coupling 3, a generator set 4 and a base platform 5;
  • the V-shaped wind wheel 1 is provided with three inclined arms 1-1, the lower end of which is assembled with the wind wheel 1-9, and the rotating arm 1-1 is centered on the rotating shaft 1-3 of the wind wheel.
  • the rotating arm 1-1 of the wind wheel adopts an inclined arrangement, and the lower end thereof is directly assembled with the wind wheel turntable 1-9, thereby effectively reducing
  • the height of the center of gravity of the wind turbine wind turbine ensures the operation of the offshore wind turbine stability
  • the rotating arm 1-1 is designed as a retractable structure, and the lower end of the rotating arm 1-1 is hingedly mounted.
  • a first pulling arm 1-2 is provided, and the lower end of the first pulling arm 1-2 is fixedly connected with the rotating arm 1-1, and the upper end
  • the second pulling arm 1-4 is hingedly assembled with the rotating arm retracting drive mechanism 1-5 disposed on the rotating shaft 1-3 of the wind wheel;
  • the rotating arm retracting drive mechanism 1-5 includes the first motor 1 - 5-1, the transmission assembly 1-5-2, the first lead screw 1-5-3, and the lifting plate 1-5-4;
  • the first motor 1-5-1 is fixedly mounted on the rotating shaft 1-3 of the wind wheel
  • the output shaft of the first motor 1-5-1 is fixedly assembled with the driving wheel 1-5-2-1 of the transmission assembly 1-5-2; the driven wheel 1-5- of the transmission assembly 1-5-2 2-2 is fixed
  • the first motor 1-5-1 can be driven to drive the gear transmission assembly 1-5-2 to drive the first lead screw 1-5-3 to rotate, thereby making the first lead screw 1-5 -3 cooperate with the lifting plate 1-5-4 to move up and down, and then drive the second pulling arm 1-4 and the first pulling arm 1-2 through the lifting plate 1-5-4 to complete the angle adjustment of the rotating arm 1-1
  • the action realizes the control of the retracting state of the rotating arm 1-1; especially in the case of extremely bad weather conditions, the rotating arm 1-1 can be adjusted to the fully open state as shown in FIG. 8 for a huge sea storm.
  • the triangular area formed by the rotating arm 1-1 can also block the wind and waves for the fishing boat at sea, when the storm is coming, The boat can be docked in a triangular area to minimize damage to small fishing boats.
  • the blades 1-6 are designed as a split structure, the blades 1-6 including the upper half blade 1-6-1 and the lower half blade 1-6-2, the upper half blade 1-6-1 and the lower half blade 1-6-2 are respectively connected to the rotating arm 1-1 through an articulated structure; the rotating arm 1-1 is a cavity structure A sliding slot hole 1-1-1 is provided on the upper and lower side walls thereof, and a blade retracting drive mechanism 1-7 is disposed in the rotating arm cavity structure.
  • the blade retracting drive mechanism 1-7 includes a second motor 1-7-1, a second lead screw 1-7-2, a moving seat 1-7-3, and a sliding slot for blocking upper and lower side walls of the rotating arm 1-1-1 sealing plate 1-7-4;
  • the second motor 1-7-1 is fixedly mounted in the inner cavity of the rotating arm, and the second motor 1-7-1 output shaft and the second screw 1- 7-2 fixed assembly;
  • the second lead screw 1-7-2 and the movable seat 1-7-3 are assembled to form a screw snail a female exercise pair;
  • the movable seat 1-7-3 is fixedly assembled with the sealing plate 1-7-4;
  • the sealing plate 1-7-4 includes an upper sealing plate and a lower sealing plate, and the upper sealing plate and the lower sealing plate
  • Pull rods 1-7-5 are installed on the outer side surfaces, and the pull rods 1-7-5 pass through the sliding slot holes 1-1-1 of the upper and lower side walls of the rotating arm, respectively, and the upper half blades 1-6-1,
  • the lower half of the blade 1-6-2 is hingedly
  • the second motor 1-7-1 in the blade retracting drive mechanism 1-7 can drive the movement of the screw nut, so that the moving seat of the blade retracting drive mechanism 1-7 7-3 moves up and down along the second year of the screw 1-7-2, and the upper half blade 1-6-1 and the lower half blade 1-6-2 are respectively rotated around the hinge axis to realize the state of retracting the blade.
  • the assembly structure of the rotating arm 1-1 and the wind wheel turntable 1-9, the rotating arm 1-1 and the blade 1-6 of the offshore wind turbine of the V-type wind wheel structure according to the present invention is convenient. On-site disassembly and assembly, the installation and maintenance of the overall structure of the generator does not require the use of large hoisting equipment, thus greatly reducing the cost of installation and maintenance operations.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Wind Motors (AREA)

Abstract

L'invention concerne un générateur d'énergie éolienne en mer doté d'une structure de turbine éolienne en forme de V comportant une turbine éolienne en forme de V (1), un mécanisme de transmission à engrenage (2), un accouplement (3), un ensemble générateur (4) et une plateforme de base (5). La turbine éolienne en forme de V (1) comporte trois bras rotatifs inclinés (1-1). Les extrémités inférieures des bras rotatifs (1-1) se fixent sur un plateau tournant (1-9) de la turbine éolienne. Les bras rotatifs (1-1) sont agencés de manière radiale avec un arbre rotatif de turbine éolienne (1-3) au centre. Une extrémité supérieure de chaque bras rotatif (1-1) comporte une pale (1-6). Une extrémité inférieure de l'arbre rotatif de turbine éolienne (1-3) est connectée à l'ensemble générateur (4) par le mécanisme de transmission à engrenage (2) et l'accouplement (3). L'ensemble générateur (4) est monté sur la plate-forme de base (5). La plateforme de base (5) est fixée au niveau du fond marin au moyen de pieux marins ou de chaînes d'ancrage. Les bras rotatifs (1-1) de la turbine éolienne sont inclinés, et les extrémités inférieures des bras rotatifs (1-1) sont directement combinées avec le plateau tournant (1-9) de la turbine éolienne, pour de ce fait abaisser de manière efficace le centre de gravité de la turbine éolienne, pour assurer la stabilité de fonctionnement du générateur d'énergie éolienne en mer.
PCT/CN2016/082230 2016-03-18 2016-05-16 Générateur d'énergie éolienne en mer à structure de turbine éolienne en forme de v WO2017156859A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610157133.9 2016-03-18
CN201610157133.9A CN105781891B (zh) 2016-03-18 2016-03-18 一种v型风轮结构的海上风力发电机

Publications (1)

Publication Number Publication Date
WO2017156859A1 true WO2017156859A1 (fr) 2017-09-21

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CN (1) CN105781891B (fr)
WO (1) WO2017156859A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112186701A (zh) * 2020-10-26 2021-01-05 大连华锐重工集团股份有限公司 一种用于接闪器与测风仪升降的联动装置
CN114000980A (zh) * 2021-11-01 2022-02-01 江苏相邦科技有限公司 一种废气排放风力发电装置
CN114348191A (zh) * 2021-12-30 2022-04-15 中船风电工程技术(天津)有限公司 一种浮式风电机组码头安装专用工装

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CN106286144A (zh) * 2016-10-26 2017-01-04 吴秀华 自动调整风叶式真空风力发电机及其建造方法
CN106812671B (zh) * 2016-12-02 2020-01-17 纳路易爱姆斯株式会社 一种利用影像分析的升降式海上风力发电用桩保护装置及其运用方法
CN108454807A (zh) * 2018-05-31 2018-08-28 中国船舶科学研究中心上海分部 一种水下伸展机构
CN117028157B (zh) * 2023-10-09 2023-12-15 中国电力工程顾问集团有限公司 泥浮式海上风机系统的安装方法

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CN101302993A (zh) * 2008-06-21 2008-11-12 谢晓山 后置式倾斜旋转桨叶风轮机
CN102121453A (zh) * 2011-04-02 2011-07-13 李永平 V型立式风车
CN102953928A (zh) * 2012-10-17 2013-03-06 李洪泽 调桨长的万向风车
CN104153944A (zh) * 2014-08-06 2014-11-19 华北电力大学 一种大型海上垂直轴风力发电机组

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112186701A (zh) * 2020-10-26 2021-01-05 大连华锐重工集团股份有限公司 一种用于接闪器与测风仪升降的联动装置
CN112186701B (zh) * 2020-10-26 2023-08-01 大连华锐重工集团股份有限公司 一种用于接闪器与测风仪升降的联动装置
CN114000980A (zh) * 2021-11-01 2022-02-01 江苏相邦科技有限公司 一种废气排放风力发电装置
CN114348191A (zh) * 2021-12-30 2022-04-15 中船风电工程技术(天津)有限公司 一种浮式风电机组码头安装专用工装

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CN105781891B (zh) 2018-10-09

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