WO2004065784A1 - Floating type hydraulic generator - Google Patents

Floating type hydraulic generator Download PDF

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Publication number
WO2004065784A1
WO2004065784A1 PCT/CN2003/000413 CN0300413W WO2004065784A1 WO 2004065784 A1 WO2004065784 A1 WO 2004065784A1 CN 0300413 W CN0300413 W CN 0300413W WO 2004065784 A1 WO2004065784 A1 WO 2004065784A1
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WO
WIPO (PCT)
Prior art keywords
float
generator
support frame
type
turbine
Prior art date
Application number
PCT/CN2003/000413
Other languages
French (fr)
Chinese (zh)
Inventor
Hongyue Ju
Original Assignee
Hongyue Ju
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hongyue Ju filed Critical Hongyue Ju
Priority to AU2003244052A priority Critical patent/AU2003244052A1/en
Publication of WO2004065784A1 publication Critical patent/WO2004065784A1/en

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Classifications

    • 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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B17/00—Other machines or engines
    • F03B17/06—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head"
    • F03B17/062—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction
    • F03B17/063—Other machines or engines using liquid flow with predominantly kinetic energy conversion, e.g. of swinging-flap type, "run-of-river", "ultra-low head" with rotation axis substantially at right angle to flow direction the flow engaging parts having no movement relative to the rotor during its rotation
    • 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
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • 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
    • F05B2240/93—Mounting on supporting structures or systems on a structure floating on a liquid surface
    • F05B2240/932—Mounting on supporting structures or systems on a structure floating on a liquid surface which is a catamaran-like structure
    • 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
    • Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient

Definitions

  • the present invention relates to a hydraulic power generation device floating on a water surface.
  • a traditional hydroelectric power station is built on a barrage.
  • the barrage dam collects and raises the water level of a river. The water level drop when the water is discharged drives the blade turbine of the power station to rotate and then drives the generator to generate electricity.
  • This type of stationary power station has the advantages of large power generation capacity, but has the following disadvantages:
  • the float-type water conservancy generator according to the present invention can solve the problem of flexibly setting up a hydro-electric generator in a medium or small flow river to complete power generation.
  • the float-type hydraulic power generator of the present invention is composed of a generator, a vane-type turbine and a transmission mechanism connected between the generator and a rotating shaft of the vane-type turbine.
  • the frame is fixed on the support frame, and the two sides of the support frame are longitudinally provided with float cones that are tapered at both ends in the direction of water flow; the number and size of the blades in the blade turbine should meet the requirements of the generator for the hydraulic driving force and according to The water level is set high or low; the transmission mechanism is a variable speed gear set; the generator is also fixed on the support frame, and its output end is connected to a voltage regulator, and the output end of the voltage regulator is an electrical power output There is also a fixed ring for traction and a traction connection chain in the center of the front end of the support frame.
  • the blade turbine is a single group structure.
  • the blade turbines have two or more structures.
  • a float tube with a tapered end is provided on each side of the support frame.
  • two or more float-shaped cone-shaped float tubes are symmetrically arranged on both sides of the support frame.
  • the float tube has a front-end tapered structure.
  • the float-type hydroelectric generator is a wind power generator.
  • the present invention Compared with the traditional hydro-generator device, the present invention has the following advantages and positive effects:
  • the cost of power generation is low.
  • the cost of a single unit varies from a few hundred yuan to RMB 10,000 yuan (RMB) depending on the size.
  • a group of float-type hydro generators can be connected to the grid to increase the power supply capacity of the motor.
  • FIG. 1 is a sectional view of a front view structure of a float-type water conservancy generator according to the present invention
  • FIG. 2 is a side view of the float-type water conservancy generator according to the present invention.
  • Embodiments of the present invention The specific embodiments of the float-type water conservancy generator according to the present invention can be referred to the accompanying drawings:
  • the generator 12, the blade turbine and the transmission mechanism of the present invention are fixed above the support platform formed by the support frame 2, and a semi-circular shield 8 is fixed outside the blade turbine.
  • the support frame 2 is a frame structure, and cylindrical floats 1 and 5 with tapered ends are respectively fixed on both sides thereof, and the floats 1 and 5 are hollow structures.
  • the floats 1 and 5 may be directly fixed or connected to the support frame 2 through an adjustable angle adjustment bracket (not shown). The purpose of setting the adjustment bracket is to adjust the relative high and low positions between the floats 1, 5 and the support frame 2.
  • the blade hydraulic turbine described in this embodiment has a single-group blade structure, and of course, multiple-group blade structures may also be adopted.
  • the blade water turbine includes a water blade 4, a tile support 6, and a turbine main shaft 7.
  • the turbine main shaft 7 is supported and fixed on the support frame 2 by the tile frames 6 at both ends.
  • a large gear 3 in a transmission mechanism that rotates in synchronization with the turbine main shaft 7 is also fixed.
  • the large gear 3 is in mesh with a small gear 9 in the transmission mechanism. Rotate in sync with it.
  • a gear transmission mechanism composed of the large and small gears is also provided in the shield 8.
  • the generator 12 is located outside the shroud 8 and its output end is connected to the voltage regulator 11 through a wire 13.
  • the output end of the voltage regulator 11 is the power output of the generator and is connected to the consumer electrical appliance 10 And power it.
  • the size and number of the water turbine blades 4 should be set according to the requirements of the water flow on its driving force.
  • the blade 4 should have a certain width and turn into water, and should be below the water level line.
  • the gear ratio of the transmission mechanism should meet the working parameter requirements of the generator.
  • the generator used in this embodiment is a wind-driven generator.
  • the float-type water conservancy generator according to the present invention uses fixed piles or other fixed objects on the water to be fixed in the water by means of chain rope traction. Therefore, a chain not shown in the figure is provided in the middle of the front of the support frame 2 of the generator. Rope fixing ring. Of course, the chain rope fixing ring can also be arranged symmetrically.
  • Industrial Applicability The present invention can provide a practical, low-cost, mobile small-scale power station for residents who live on the river or live on the river, so that the conditions for power generation are minimized, and environmental pollution is not generated.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Other Liquid Machine Or Engine Such As Wave Power Use (AREA)

Abstract

The invention relates to a floating type hydraulic generator which comprises of floaters, platform of supporting frame, bladed hydraulic turbine, driving system, generator and booster. Said floaters are secured to both side of the platform of supporting frame, the ends of which form as tappered-structure. The bladed hydraulic turbine may use a single group of blades. The generator may use wind power generator. The equipment is fixed into water using fixed pillar or any other fixity on the water through the tower cable. The equipment is provided with a lot of advantageous characteristics, such as low-cost generation, mounting flexible, independence of river condition, no noises, as well as avoidance of pollution to natural environment and so on.

Description

浮子式水利发电机 技术领域 本发明涉及一种浮在水面上的水利发电装置。 背景技术 传统的水力发电站是建在拦河坝上， 由拦河坝汇集并抬高河流的水位， 利用泄水时的水位落差驱动发电站的叶片式水轮机转动， 再驱动发电机产 生电能。 此种固定式发电站具有发电容量大的优点， 但是存在着如下缺点： TECHNICAL FIELD The present invention relates to a hydraulic power generation device floating on a water surface. BACKGROUND OF THE INVENTION A traditional hydroelectric power station is built on a barrage. The barrage dam collects and raises the water level of a river. The water level drop when the water is discharged drives the blade turbine of the power station to rotate and then drives the generator to generate electricity. This type of stationary power station has the advantages of large power generation capacity, but has the following disadvantages:
1、 对河流条件要求高， 一般是建在流量大的大型河流上， 而不能充分利用 中、 小河流进行水力发电； 2、 施工难度大； 3、 施工成本高。 发明内容 本发明所述浮子式水利发电机可以解决在中、 小流量的河流中， 机动 灵活设置水力发电机， 完成发电的问题。 1. The requirements for river conditions are high, and they are generally built on large rivers with large flows, but cannot make full use of small and medium rivers for hydropower generation; 2. The construction is difficult; 3. The construction costs are high. SUMMARY OF THE INVENTION The float-type water conservancy generator according to the present invention can solve the problem of flexibly setting up a hydro-electric generator in a medium or small flow river to complete power generation.
本发明浮子式水利发电机由发电机、 叶片式水轮机和连接于所述发电 机与叶片水轮机的转动轴之间的传动机构组成； 其特征在于： 所述叶片水 轮机转轴两端， 通过轴瓦和瓦架固定在支撑架上， 在支撑架两侧沿水流方 向纵向设置有两端成锥形的浮子筒； 所述叶片水轮机中的叶片数量及尺寸 应满足发电机对水力推动力的要求和根据水位线高低设定； 所述传动机构 是一个变速齿轮组； 所述发电机同样被固定于支撑架上， 其输出端与一个 调压器相连接， 该调压器输出端为用电器电源输出端； 所述支撑架的前端 正中央还有一个用于牵引的固定环及牵引连接链绳。  The float-type hydraulic power generator of the present invention is composed of a generator, a vane-type turbine and a transmission mechanism connected between the generator and a rotating shaft of the vane-type turbine. The frame is fixed on the support frame, and the two sides of the support frame are longitudinally provided with float cones that are tapered at both ends in the direction of water flow; the number and size of the blades in the blade turbine should meet the requirements of the generator for the hydraulic driving force and according to The water level is set high or low; the transmission mechanism is a variable speed gear set; the generator is also fixed on the support frame, and its output end is connected to a voltage regulator, and the output end of the voltage regulator is an electrical power output There is also a fixed ring for traction and a traction connection chain in the center of the front end of the support frame.
如上所述的浮子式水利发电机， 其叶片水轮机为单组结构。  In the above-mentioned float-type hydraulic power generator, the blade turbine is a single group structure.
如上所述的浮子式水利发电机， 所述叶片水轮机为两组或两组以上的 结构。  In the above-mentioned float-type hydraulic power generator, the blade turbines have two or more structures.
如上所述的浮子式水利发电机， 所述支撑架两侧分别设置一个两端成 锥形的浮子筒。 如上所述的浮子式水利发电机， 所述支撑架两侧对称设置有二个或二 个以上的两端成锥形的浮子筒。 In the float-type water conservancy generator described above, a float tube with a tapered end is provided on each side of the support frame. In the above-mentioned float-type water conservancy generator, two or more float-shaped cone-shaped float tubes are symmetrically arranged on both sides of the support frame.
如上所述的浮子式水利发电机， 所述浮子筒为前端锥形结构。  In the float-type water conservancy generator as described above, the float tube has a front-end tapered structure.
如上所述的浮子式水利发电机， 其发电机为风力专用发电机。  As mentioned above, the float-type hydroelectric generator is a wind power generator.
本发明与传统的水力发电机装置相比， 具有如下优点和积极效果： Compared with the traditional hydro-generator device, the present invention has the following advantages and positive effects:
1. 发电的成本低， 单台造价根据尺寸大小不同， 在几百至仟元（人民 币） 内。 1. The cost of power generation is low. The cost of a single unit varies from a few hundred yuan to RMB 10,000 yuan (RMB) depending on the size.
2. 能够充分利用遍布于各地的江河， 不受条件限制完成发电。  2. Able to make full use of the rivers scattered all over the place and complete power generation without restrictions.
3. 解决偏远地区农村的以户为单位的小型发电供电的问题。  3. Solve the problem of small household power generation in rural areas in rural areas.
4. 为沿河流域进行勘察、 施工和其它野外作业人员提供移动方便的生 活、 工作用发电设备。  4. Provide easy-to-move living and working power generation equipment for surveying, construction and other field operators along the river basin.
5.可以由一组浮子式水力发电机并网， 提高电机的供电容量。  5. A group of float-type hydro generators can be connected to the grid to increase the power supply capacity of the motor.
6. 无任何噪音和环境污染， 且使用寿命长。  6. No noise and environmental pollution, and long service life.
7. 对江河的航路不造成阻碍， 且抗洪水和强波浪能力强。 附图概述 图 1是本发明所述浮子式水利发电机的正视结构剖视图；  7. It does not cause obstacles to river routes, and has strong ability to resist floods and strong waves. Brief Description of the Drawings Fig. 1 is a sectional view of a front view structure of a float-type water conservancy generator according to the present invention;
图 2是本发明所述浮子式水利发电机的侧视图； 本发明的实施例 本发明所述浮子式水利发电机的具体实施例可参见附图：  FIG. 2 is a side view of the float-type water conservancy generator according to the present invention. Embodiments of the present invention The specific embodiments of the float-type water conservancy generator according to the present invention can be referred to the accompanying drawings:
在本实施例中。 参见图 1、 2， 本发明的发电机 12、 叶片水轮机和传动 机构均固定在支撑架 2构成的支撑平台之上方， 并有一个半圆形护罩 8固 定在叶片水轮机外侧。 所述支撑架 2为框架结构， 其两侧分别固定有端部 呈锥状的筒形浮子 1、 5， 该浮子 1、 5为中空结构。 所述浮子 1、 5， 可采 用直接固定或通过一个图中未示的可调节角度的调整支架与支撑架 2实现 连接。 设置调整支架的目的是为了调整浮子 1、 5与支撑架 2之间的相对高 低位置。  In this embodiment. Referring to Figs. 1 and 2, the generator 12, the blade turbine and the transmission mechanism of the present invention are fixed above the support platform formed by the support frame 2, and a semi-circular shield 8 is fixed outside the blade turbine. The support frame 2 is a frame structure, and cylindrical floats 1 and 5 with tapered ends are respectively fixed on both sides thereof, and the floats 1 and 5 are hollow structures. The floats 1 and 5 may be directly fixed or connected to the support frame 2 through an adjustable angle adjustment bracket (not shown). The purpose of setting the adjustment bracket is to adjust the relative high and low positions between the floats 1, 5 and the support frame 2.
本实施例中所述叶片水轮机为单组叶片结构， 当然也可采用多组叶片 结构。 叶片水轮机包括水叶片 4、 瓦架 6、 水轮机主轴 7。 所述水轮机主轴 7被两端的瓦架 6支撑并固定于支撑架 2上。在水轮机主轴 7上还固定有与 其同步转动的传动机构中的大齿轮 3所述大齿轮 3又与传动机构中的小齿 轮 9啮合， 该小齿轮 9被固定在发电机 12的主轴上， 并与其同步转动。 所 述大小齿轮组成的齿轮变速机构同样被设置在护罩 8内。所述发电机 12位 于护罩 8外侧， 并通过电线 13将其输出端接至调压器 11，.调压器 11的输 出端为本发电机的电源输出， 与用户的用电器 10相连接并为其供电。 The blade hydraulic turbine described in this embodiment has a single-group blade structure, and of course, multiple-group blade structures may also be adopted. The blade water turbine includes a water blade 4, a tile support 6, and a turbine main shaft 7. The turbine main shaft 7 is supported and fixed on the support frame 2 by the tile frames 6 at both ends. A large gear 3 in a transmission mechanism that rotates in synchronization with the turbine main shaft 7 is also fixed. The large gear 3 is in mesh with a small gear 9 in the transmission mechanism. Rotate in sync with it. A gear transmission mechanism composed of the large and small gears is also provided in the shield 8. The generator 12 is located outside the shroud 8 and its output end is connected to the voltage regulator 11 through a wire 13. The output end of the voltage regulator 11 is the power output of the generator and is connected to the consumer electrical appliance 10 And power it.
所述水轮机叶片 4的尺寸和个数设置， 应符合水流对其推动力的要示。 所述叶片 4应有一定宽度， 并且转至水中， 应在水位线以下。 传动机构的 变速比应满足发电机的工作参数要求， 本实施例中所采用的发电机为风力 式发电机。  The size and number of the water turbine blades 4 should be set according to the requirements of the water flow on its driving force. The blade 4 should have a certain width and turn into water, and should be below the water level line. The gear ratio of the transmission mechanism should meet the working parameter requirements of the generator. The generator used in this embodiment is a wind-driven generator.
本发明所述浮子式水利发电机是利用定桩或水上其它固定物， 通过链 绳牵引固定在水中， 因此， 在本发电机的支撑架 2 的前方中部设有一个图 中未示出的链绳固定环。 当然该链绳固定环还可对称设置成 2个。 工业实用性 本发明可以为流动作业或居住于河边的居民提供一个实用、 低成本的 机动型小型发电站， 使发电的条件降到最低， 并且不产生环境方面的污染。  The float-type water conservancy generator according to the present invention uses fixed piles or other fixed objects on the water to be fixed in the water by means of chain rope traction. Therefore, a chain not shown in the figure is provided in the middle of the front of the support frame 2 of the generator. Rope fixing ring. Of course, the chain rope fixing ring can also be arranged symmetrically. Industrial Applicability The present invention can provide a practical, low-cost, mobile small-scale power station for residents who live on the river or live on the river, so that the conditions for power generation are minimized, and environmental pollution is not generated.

Claims

权 利 要 求 书 Claim
1.一种浮子式水利发电机由发电机、叶片式水轮机和连接于所述发电 机与叶片水轮机的转动轴之间的传动机构组成； 其特征在于： 所述叶片水 轮机转轴两端， 通过轴瓦和瓦架固定在支撑架上， 在支撑架两侧沿水流方 向纵向设置有两端成锥形的浮子筒； 所述叶片水轮机中的叶片数量及尺寸 应满足发电机对水力推动力的要求和根据水位线高低设定； 所述传动机构 是一个变速齿轮组； 所述发电机同样被固定于支撑架上， 其输出端与一个 调压器相连接， 该调压器输出端为用电器电源输出端； 所述支撑架的前端 正中央还有一个用于牵引的固定环及牵弓 I连接链绳。 A float-type hydraulic generator is composed of a generator, a vane-type turbine and a transmission mechanism connected between the generator and a rotating shaft of the vane-type turbine; characterized in that: both ends of the vane-type turbine's rotating shaft pass through a bearing bush And the tile frame are fixed on the support frame, and both sides of the support frame are longitudinally provided with a cone-shaped float tube along the direction of the water flow; the number and size of the blades in the blade turbine should meet the requirements of the generator on the hydraulic driving force And the level is set according to the level of the water level; the transmission mechanism is a variable speed gear set; the generator is also fixed on the support frame, and its output end is connected to a voltage regulator, and the output end of the voltage regulator is an electrical appliance Power output end; There is also a fixed ring for traction and a pulling chain I connection chain in the center of the front end of the support frame.
2. 如权利要求 1所述的浮子式水利发电机， 其特征在于： 叶片水轮机 为单组结构。  2. The float-type hydraulic power generator according to claim 1, wherein the blade turbine is a single-group structure.
3. 如权利要求 1所述的浮子式水利发电机， 其特征在于： 所述叶片水 轮机为两组或两组以上的结构。  3. The float-type hydraulic power generator according to claim 1, wherein the blade turbines have two or more structures.
4. 如权利要求 1所述的浮子式水利发电机， 其特征在于： 所述支撑架 两侧分别设置一个两端成锥形的浮子筒。  4. The float-type water conservancy generator according to claim 1, characterized in that: two sides of the support frame are respectively provided with a float tube having a tapered end.
5. 如权利要求 1或 4所述的浮子式水利发电机， 其特征在于： 所述支 撑架两侧对称设置有二个或二个以上的两端成锥形的浮子筒。  5. The float-type water conservancy generator according to claim 1 or 4, characterized in that: two or more than two float cones with tapered ends are provided on both sides of the support frame symmetrically.
6. 如权利要求 1或 4所述的浮子式水利发电机， 其特征在于： 所述浮 子筒为前端锥形结构。  6. The float-type water conservancy generator according to claim 1 or 4, wherein the float cylinder has a front-end tapered structure.
7. 如权利要求 1所述的浮子式水利发电机， 其特征在于： 发电机为风 力专用发电机。  7. The float-type water conservancy generator according to claim 1, wherein the generator is a wind power generator.
PCT/CN2003/000413 2003-01-24 2003-05-29 Floating type hydraulic generator WO2004065784A1 (en)

Priority Applications (1)

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AU2003244052A AU2003244052A1 (en) 2003-01-24 2003-05-29 Floating type hydraulic generator

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CNA03100881XA CN1519471A (en) 2003-01-24 2003-01-24 Float type hydroelectric generator
CN03100881.X 2003-01-24

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WO2004065784A1 true WO2004065784A1 (en) 2004-08-05

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CN103835274A (en) * 2014-03-24 2014-06-04 长沙理工大学 Wave power generation device combined with floating seawall and port trestle

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DE2555663A1 (en) * 1975-12-11 1977-06-30 Georg Weiss Energy generator for land cultivation and stream clearance - has liftable float:supported paddle wheels in stream for electricity generation
FR2420668A1 (en) * 1978-03-23 1979-10-19 Desselas Pol Electric generator driven by flowing water - has water wheel mounted on floating platform anchored to bed of stream
CN1060138A (en) * 1990-09-17 1992-04-08 张迪仁 A kind of hydroelectric power plant that floats on the surface
CN1099460A (en) * 1993-08-26 1995-03-01 孟庆筑 Floating water turbine
CN2299947Y (en) * 1997-05-20 1998-12-09 张魁宇 Floating water turbine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2555663A1 (en) * 1975-12-11 1977-06-30 Georg Weiss Energy generator for land cultivation and stream clearance - has liftable float:supported paddle wheels in stream for electricity generation
FR2420668A1 (en) * 1978-03-23 1979-10-19 Desselas Pol Electric generator driven by flowing water - has water wheel mounted on floating platform anchored to bed of stream
CN1060138A (en) * 1990-09-17 1992-04-08 张迪仁 A kind of hydroelectric power plant that floats on the surface
CN1099460A (en) * 1993-08-26 1995-03-01 孟庆筑 Floating water turbine
CN2299947Y (en) * 1997-05-20 1998-12-09 张魁宇 Floating water turbine

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