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CN201763507U - Multistage fall hydroelectric generating unit and jet channel for same - Google Patents

Multistage fall hydroelectric generating unit and jet channel for same Download PDF

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Publication number
CN201763507U
CN201763507U CN2010202378816U CN201020237881U CN201763507U CN 201763507 U CN201763507 U CN 201763507U CN 2010202378816 U CN2010202378816 U CN 2010202378816U CN 201020237881 U CN201020237881 U CN 201020237881U CN 201763507 U CN201763507 U CN 201763507U
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jet
channel
water
accelerating sections
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赵保连
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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
    • F03B—MACHINES OR ENGINES FOR LIQUIDS
    • F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
    • F03B13/08—Machine or engine aggregates in dams or the like; Conduits therefor, e.g. diffusors
    • 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
    • F05B2240/10—Stators
    • F05B2240/12—Fluid guiding means, e.g. vanes
    • F05B2240/124—Cascades, i.e. assemblies of similar profiles acting in parallel
    • 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
    • F05B2250/00—Geometry
    • F05B2250/20—Geometry three-dimensional
    • F05B2250/23—Geometry three-dimensional prismatic
    • F05B2250/232—Geometry three-dimensional prismatic conical
    • 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
    • F05B2250/00—Geometry
    • F05B2250/30—Arrangement of components
    • F05B2250/31—Arrangement of components according to the direction of their main axis or their axis of rotation
    • F05B2250/314—Arrangement of components according to the direction of their main axis or their axis of rotation the axes being inclined in relation to each other
    • 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
    • F05B2250/00—Geometry
    • F05B2250/50—Inlet or outlet
    • F05B2250/501—Inlet
    • F05B2250/5011—Inlet augmenting, i.e. with intercepting fluid flow cross sectional area greater than the rest of the machine behind the inlet
    • 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
    • Y02E10/20—Hydro energy

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  • 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)
  • Hydraulic Turbines (AREA)

Abstract

本实用新型公开了一种多级落差水力发电机组及用于该发电机组的射流通道，为解决现有技术中发电效率较低等问题而发明。包括设有用于连接上级水轮发电机出水口的进口和用于连接下级水轮发电机进水口的出口的通道本体，通道本体自上而下由聚水段、加速段、射流段构成；聚水段呈漏斗状，加速段沿所述漏斗状聚水段壁向一侧倾斜设置，射流段相对加速段向其反方向斜下方设置，加速段及射流段均呈倒锥状。由上、下两级水轮发电机及设在两者之间的射流通道构成的多级落差水力发电机组。射流通道能将上级水轮发电机利用的水源进行汇集并加速形成高速射流用于下级水轮发电机发电，有效留用水流动能并降低能量过程损失，结构简单、发电效率较高。

Figure 201020237881

The utility model discloses a multi-stage drop hydraulic generator set and a jet flow channel used for the generator set, which are invented for solving the problems of low power generation efficiency in the prior art. It includes a channel body provided with an inlet for connecting the water outlet of the upper-level hydro-generator and an outlet for connecting the water inlet of the lower-level hydro-generator. The channel body is composed of a water gathering section, an acceleration section, and a jet section from top to bottom; The water section is funnel-shaped, the acceleration section is arranged obliquely to one side along the wall of the funnel-shaped water-collecting section, and the jet section is arranged obliquely downward relative to the acceleration section, and both the acceleration section and the jet section are in the shape of an inverted cone. The utility model is a multi-stage drop hydroelectric generator set composed of an upper and a lower stage hydroelectric generator and a jet passage between the two. The jet channel can gather the water source used by the upper-stage hydro-generator and accelerate it to form a high-speed jet for the lower-stage hydro-generator to generate electricity, effectively retaining the kinetic energy of water and reducing the loss of energy process, with a simple structure and high power generation efficiency.

Figure 201020237881

Description

多级落差水力发电机组及用于该发电机组的射流通道 Multi-stage drop hydroelectric generating set and jet channel for the generating set

技术领域technical field

本实用新型涉及水力发电系统，尤其是多级落差水力发电机组及射流通道。 The utility model relates to a hydraulic power generation system, in particular to a multi-stage drop hydraulic power generation unit and a jet channel. the

背景技术Background technique

现有的利用落差水力势能进行发电的多级发电系统，在相邻两级水轮发电机之间设置的水流通道，由于形状上的设置缺陷导致上游水流至下游时重力势能转换的动能后能被利用进行发电的部分较少，大部分流至下游后就白白浪费掉了，并且过程损失较多，导致发电效率较低。 In the existing multi-stage power generation system that utilizes the hydraulic potential energy of the drop to generate electricity, the water flow channel set up between the adjacent two-stage hydroelectric generators, due to the defects in the shape, the kinetic energy converted from the gravitational potential energy when the upstream water flows to the downstream The part that is used for power generation is less, and most of it is wasted after flowing downstream, and the process loss is more, resulting in low power generation efficiency. the

实用新型内容Utility model content

为了克服上述缺陷，本实用新型的目的在于提供一种结构简单、增加水流速度的用于多级落差水力发电机组的射流通道。 In order to overcome the above-mentioned defects, the purpose of the utility model is to provide a jet channel for a multi-stage drop hydroelectric generator set with a simple structure and increased water flow velocity. the

为了达到上述目的，本实用新型的用于多级落差水力发电机组的射流通道包括通道本体，所述通道本体设置有用于连接上级水轮发电机出水口的进口和用于连接下级水轮发电机进水口的出口，所述通道本体自上而下由聚水段、加速段、射流段三部分构成，其中，所述聚水段呈漏斗状，所述加速段沿所述漏斗状聚水段壁向一侧倾斜设置，所述射流段相对所述加速段向其反方向斜下方设置，所述加速段及射流段均呈倒锥状。 In order to achieve the above-mentioned purpose, the jet channel of the utility model for the multi-stage drop hydroelectric generating set includes a channel body, and the channel body is provided with an inlet for connecting the water outlet of the upper-stage hydro-generator and an inlet for connecting the lower-stage hydro-generator. The outlet of the water inlet, the channel body is composed of three parts from top to bottom: a water collection section, an acceleration section, and a jet section, wherein the water collection section is funnel-shaped, and the acceleration section is along the funnel-shaped water collection section. The wall is inclined to one side, and the jet section is arranged obliquely downward relative to the acceleration section in the opposite direction, and both the acceleration section and the jet section are in the shape of an inverted cone. the

其中，所述加速段上壁面为向外凸出的弧面。 Wherein, the upper wall surface of the acceleration section is an outwardly convex arc surface. the

进一步地，所述的射流段的斜度相对加速段的斜度较大。 Further, the slope of the jet section is larger than that of the acceleration section. the

上述的结构，位于上部的漏斗状聚水段能够将上级水轮发电机利用后的水流尽可能多的聚集起来并进入加速段，经加速段水流重力势能转化为动能水流速度增加，最后经射流段喷向下级水轮发电机进口推动水轮转动发电，倒锥状加速段及射流段能够形成流速较高的喷射流。 With the above-mentioned structure, the funnel-shaped water-accumulating section located at the upper part can gather as much water flow as possible after being used by the upper-stage hydroelectric generator and enter the acceleration section. The section sprays to the inlet of the lower-level hydroelectric generator to drive the waterwheel to rotate to generate electricity, and the inverted cone-shaped acceleration section and the jet section can form a jet flow with a relatively high velocity. the

为了克服上述缺陷，本实用新型的目的在于提供一种结构简单、水力利用率高的多级落差水力发电机组。 In order to overcome the above-mentioned defects, the purpose of the utility model is to provide a multi-stage drop hydroelectric generator set with simple structure and high hydraulic utilization rate. the

为了达到上述目的，本实用新型的多级落差水力发电机组，包括自上而下设置的至少两级水轮发电机和设置在相邻上、下两级水轮发电机之间的水流通道，所述水流通道包括通道本体，所述通道本体设置有用于连接上级水轮发电机出水口的进口和用于连接下级水轮发电机进水口的出口，所述的水流通道为射流通道，所述通道本体自上而下由聚水段、加速段、射流段三部分构成，其中，所述聚水段呈漏斗状，所述加速段沿所述漏斗状聚水段壁向一侧倾斜设置，所述射流段相对所述加速段向其反方向斜下方设置，所述加速段及射流段均呈倒锥状。 In order to achieve the above-mentioned purpose, the multi-stage drop hydroelectric generator set of the present utility model includes at least two-stage hydro-generators arranged from top to bottom and a water flow channel arranged between the adjacent upper and lower two-stage hydro-electric generators, The water flow channel includes a channel body, and the channel body is provided with an inlet for connecting the water outlet of the upper-stage hydro-generator and an outlet for connecting the water inlet of the lower-stage hydro-generator, the water flow channel is a jet channel, and the The channel body consists of three parts from top to bottom: a water collecting section, an accelerating section, and a jet section, wherein the water collecting section is funnel-shaped, and the accelerating section is inclined to one side along the wall of the funnel-shaped water collecting section. The jet section is arranged obliquely downward relative to the acceleration section in the opposite direction, and both the acceleration section and the jet section are in the shape of an inverted cone. the

其中，所述加速段上壁面为向外凸出的弧面。 Wherein, the upper wall surface of the acceleration section is an outwardly convex arc surface. the

进一步地，所述的射流段的斜度相对加速段的斜度较大。 Further, the slope of the jet section is larger than that of the acceleration section. the

特别是，所述的射流通道按其倾斜方向相对交错排列设置。 In particular, the jet channels are relatively staggered according to their inclined directions. the

上述的结构，由于射流通道能够将分布较散的大量水流进行聚流加速并形成速度较高的喷射水流，大大提高了利用水流动能发电的利用率，降低了过程损失，提高了多级落差水力发电机组的发电效率。 The above-mentioned structure, because the jet channel can gather and accelerate a large amount of scattered water flow to form a high-speed jet water flow, greatly improves the utilization rate of power generation by using water kinetic energy, reduces process losses, and improves the multi-stage drop. The power generation efficiency of hydroelectric generator sets. the

附图说明Description of drawings

图1为本实用新型的射流通道第一具体实施例的结构示意图。 Fig. 1 is a schematic structural view of a first specific embodiment of a jet channel of the present invention. the

图2为本实用新型的射流通道第二具体实施例的结构示意图。 Fig. 2 is a schematic structural diagram of a second specific embodiment of the jet channel of the present invention. the

图3为本实用新型的多级水力发电机组的具体实施例的结构示意图。 Fig. 3 is a schematic structural view of a specific embodiment of the multi-stage hydraulic generating set of the present invention. the

具体实施方式Detailed ways

下面结合附图和实施例对本实用新型作进一步详细说明。 Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail. the

如图1、图2、图3所示，本实用新型的用于多级落差水力发电机组的射流通道的第一具体实施例，包括通道本体，所述通道本体设置有用于连接上级水轮发电机出水口的进口11和用于连接下级水轮发电机进水口的出口31，所述通道本体自上而下由聚水段1、加速段2、射流段3三部分构成，其中，所述聚水段呈漏斗状，所述加速段沿所述漏斗状聚水段壁向一侧倾斜设置，降低水流阻力，增加单位时间内的水流量，增加发电效率，所述射流段相对所述加速段向其反方向斜下方设置，改变加速段底部水流方向，平衡加速段水流冲击力，所述加速段及射流段均呈倒锥状。进一步地，为，所述的射流段的斜度相对加速段的斜度较大。所述出口31相对进口11小得多，其开口面积之比小于1∶10。 As shown in Fig. 1, Fig. 2 and Fig. 3, the first specific embodiment of the jet channel of the utility model for the multi-stage drop hydropower generating set includes a channel body, and the channel body is provided with a The inlet 11 of the machine water outlet and the outlet 31 used to connect the water inlet of the lower-stage hydroelectric generator, the channel body is composed of three parts: the water collecting section 1, the accelerating section 2, and the jet section 3 from top to bottom, wherein the The water-accumulating section is funnel-shaped, and the acceleration section is inclined to one side along the wall of the funnel-shaped water-accumulating section to reduce water flow resistance, increase water flow per unit time, and increase power generation efficiency. The jet section is relatively accelerated The section is arranged obliquely downward in the opposite direction to change the direction of water flow at the bottom of the acceleration section and balance the impact force of the water flow in the acceleration section. Both the acceleration section and the jet section are in the shape of an inverted cone. Further, the slope of the jet section is larger than the slope of the acceleration section. The outlet 31 is much smaller than the inlet 11, and the ratio of its opening area is less than 1:10. the

上述的结构，位于上部的漏斗状聚水段能够将上级水轮发电机利用后的水流尽可能多的聚集起来并进入加速段，经加速段水流重力势能转化为动能水流速度增加，最后经射流段喷向下级水轮发电机进口推动水轮转动发电，倒锥状加速段及射流段能够形成流速较高的喷射流。 With the above-mentioned structure, the funnel-shaped water-accumulating section located at the upper part can gather as much water flow as possible after being used by the upper-stage hydroelectric generator and enter the acceleration section. The section sprays to the inlet of the lower-level hydroelectric generator to drive the waterwheel to rotate to generate electricity, and the inverted cone-shaped acceleration section and the jet section can form a jet flow with a relatively high velocity. the

其中作为本实用新型的第二具体实施例，所述加速段上壁面为向外凸出的弧面21。降低水流在流动过程中的阻力，降低能量过程损失。 As the second specific embodiment of the present utility model, the upper wall surface of the acceleration section is an outwardly protruding arc surface 21 . Reduce the resistance of water flow in the flow process and reduce the loss of energy process. the

本实用新型的多级落差水力发电机组，包括自上而下设置的至少两级水轮发电机(本具体实施例中为五级，当然还可为三级或四级等，根据水流落差具体设置)自上而下依次为一级水轮发电机10、二级水轮发电机20、三级水轮发电机30、四级水轮发电机40、五级水轮发电机50和依次设置在相邻上、下两级水轮发电机之间的射流通道100、射流通道200、射流通道300、射流通道400，所述射流通道包括通道本体，所述通道本体设置有用于连接上级水轮发电机出水口的进口和用于连接下级水轮发电机进水口的出口，所述通道本体自上而下由聚水段、加速段、射流段三部分构成，其中，所述聚水段呈漏斗状，所述加速段沿所述漏斗状聚水段壁向一侧倾斜设置，所述射流段相对所述加速段向其反方向斜下方设置，所述加速段及射流段均呈倒锥状。其中，所述加速段上壁面为向外凸出的弧面。进一步地，所述的射流段的斜度相对加速段的斜度较大。为了节约占用空间及平衡受力，所述的射流通道按其倾斜方向相对交错排列设置。The utility model's multi-stage drop hydroelectric generating set includes at least two stages of water turbine generators arranged from top to bottom (five stages in this specific embodiment, and of course three or four stages, etc., depending on the water flow drop). Setting) from top to bottom are the first-stage hydro-generator 10, the second-stage hydro-generator 20, the third-stage hydro-generator 30, the fourth-stage hydro-generator 40, the fifth-stage hydro-generator 50 and the The jet channel 100, the jet channel 200, the jet channel 300, and the jet channel 400 between the adjacent upper and lower hydraulic generators, the jet channel includes a channel body, and the channel body is provided with a The inlet of the water outlet of the generator and the outlet used to connect the water inlet of the lower-stage hydroelectric generator. The channel body consists of three parts from top to bottom: the water collecting section, the accelerating section and the jet section, wherein the water collecting section is in the form of Funnel-shaped, the acceleration section is arranged obliquely to one side along the wall of the funnel-shaped water-collecting section, and the jet section is arranged obliquely downward relative to the acceleration section in the opposite direction, and the acceleration section and the jet section are both inverted cones shape. Wherein, the upper wall surface of the acceleration section is an outwardly convex arc surface. Further, the slope of the jet section is larger than that of the acceleration section. In order to save space and balance stress, the jet channels are arranged in a staggered arrangement according to their inclined directions.

上述的结构，水轮发电机的启动转速较低，一般在水流落差3米以上即可启动，水流经上述的射流通道，相对直通状或自然状态下落，能够将分布较散的大量水流进行聚流并有效利用落差及水内部压力加速并形成速度较高的喷射水流进入水轮发电机进口推动水轮转动，大大提高了利用水流动能发电的利用率，降低了过程损失，提高了多级落差水力发电机组的发电效率，结构简单，发电效率较高，不仅适用于水流落差较大的水源，也适用于水流落差相对不大的水源。 With the above-mentioned structure, the starting speed of the hydro-generator is relatively low, and it can generally be started when the water flow drop is more than 3 meters. The water flows through the above-mentioned jet flow channel and falls in a relatively straight-through or natural state. Flow and effectively use the drop and the internal pressure of the water to accelerate and form a high-speed jet flow into the inlet of the hydro-generator to drive the water wheel to rotate, which greatly improves the utilization rate of water kinetic energy for power generation, reduces process losses, and improves multi-stage The power generation efficiency of the drop hydroelectric generator set is simple in structure and high in power generation efficiency. It is not only suitable for water sources with large water drop, but also suitable for water sources with relatively small water drop. the

本实用新型不局限于上述实施方式，不论在其形状或结构上做任何变化，凡是利用上述的多级落差水力发电机组及用于该发电机组的射流通道都是本实用新型的一种变形，均应认为落在本实用新型保护范围之内。 The utility model is not limited to the above-mentioned embodiment, regardless of any changes in its shape or structure, any use of the above-mentioned multi-stage drop hydraulic generator set and the jet channel used for the generator set is a deformation of the utility model, All should be considered as falling within the protection scope of the present utility model. the

Claims (7)

1. fluidic channel that is used for multistage drop hydroelectric power unit, comprise channel body, described channel body is provided with the import and the outlet that is used to be connected subordinate's hydraulic turbine generator water intake that is used to connect higher level's hydraulic turbine generator water outlet, it is characterized in that, described channel body is from top to bottom by the polywater section, accelerating sections, jet segment three parts constitute, wherein, described polywater section is funnel-like, described accelerating sections is provided with along described funnel-like polywater Duan Bixiang lopsidedness, the described relatively accelerating sections of described jet segment is to its tiltedly below setting in the other direction, and described accelerating sections and jet segment all are inverted cone shape.
2. the fluidic channel that is used for multistage drop hydroelectric power unit as claimed in claim 1 is characterized in that, described accelerating sections upper wall surface is the cambered surface of outwards protruding.
3. the fluidic channel that is used for multistage drop hydroelectric power unit as claimed in claim 1 or 2 is characterized in that the gradient of the relative accelerating sections of gradient of described jet segment is bigger.
4. multistage drop hydroelectric power unit, comprise from top to bottom the hydraulic turbine generator of two-stage at least that is provided with and be arranged on adjacent on, flow channel between the following two-stage hydraulic turbine generator, described flow channel comprises channel body, described channel body is provided with the import and the outlet that is used to be connected subordinate's hydraulic turbine generator water intake that is used to connect higher level's hydraulic turbine generator water outlet, it is characterized in that, described flow channel is a fluidic channel, described channel body is from top to bottom by the polywater section, accelerating sections, jet segment three parts constitute, wherein, described polywater section is funnel-like, described accelerating sections is provided with along described funnel-like polywater Duan Bixiang lopsidedness, the described relatively accelerating sections of described jet segment is to its tiltedly below setting in the other direction, and described accelerating sections and jet segment all are inverted cone shape.
5. multistage drop hydroelectric power unit as claimed in claim 4 is characterized in that, described accelerating sections upper wall surface is the cambered surface of outwards protruding.
6. as claim 4 or 5 described multistage drop hydroelectric power units, it is characterized in that the gradient of the relative accelerating sections of gradient of described jet segment is bigger.
7. multistage drop hydroelectric power unit as claimed in claim 6 is characterized in that, described fluidic channel is by the setting that is staggered relatively of its true dip direction.
CN2010202378816U 2010-06-25 2010-06-25 Multistage fall hydroelectric generating unit and jet channel for same Expired - Fee Related CN201763507U (en)

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PCT/CN2010/075652 WO2011160325A1 (en) 2010-06-25 2010-08-03 Jet passage for multistage fall hydraulic generator set and multistage fall hydraulic generator set

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CN102913368A (en) * 2012-11-13 2013-02-06 梁家超 Large-scale mixed-flow hydroelectric generator group
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CN104121139A (en) * 2013-04-26 2014-10-29 贺瑞华 Multi-stage hydraulic ram electricity-generating device
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CN109595115A (en) * 2015-10-24 2019-04-09 王雪梅 One kind being used for hydroelectric equipment
CN105298722A (en) * 2015-10-29 2016-02-03 刘洋 Efficient water-saving hydroelectric device
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