JP4495129B2 - Horizontal axis Pelton turbine - Google Patents

Horizontal axis Pelton turbine Download PDF

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Publication number
JP4495129B2
JP4495129B2 JP2006270771A JP2006270771A JP4495129B2 JP 4495129 B2 JP4495129 B2 JP 4495129B2 JP 2006270771 A JP2006270771 A JP 2006270771A JP 2006270771 A JP2006270771 A JP 2006270771A JP 4495129 B2 JP4495129 B2 JP 4495129B2
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Prior art keywords
horizontal axis
pelton turbine
flow rate
nozzle
valve
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JP2007032575A (en
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尚紀 並木
直史 塚本
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Tokyo Electric Power Co Inc
Fuji Electric Co Ltd
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Tokyo Electric Power Co Inc
Fuji Electric Systems Co Ltd
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    • 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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  • Hydraulic Turbines (AREA)
  • Control Of Water Turbines (AREA)

Description

この発明は、横軸ペルトン水車の流量制御を簡素化した構成で行える横軸ペルトン水車の構造に関する。   The present invention relates to a structure of a horizontal axis Pelton turbine that can perform flow rate control of the horizontal axis Pelton turbine with a simplified configuration.

図２は、従来の横軸ペルトン水車の縦断面図である。ペルトン水車は高落差の地点に適した衝撃水車であり、流量が大きく変化しても落差変動が小さい場合には効率の低下も比較的小さく運転性能も良いという特徴を有している。そして、このペルトン水車は水車及び発電機の据付状態により横軸形と縦軸形に分けられる。
図２に示すように、横軸ペルトン水車は、水圧管１に連結されているちょう形弁，バイプレーン弁又はロータリ弁等の開閉弁からなる入口弁２を全開して、この入口弁２に連結されている分岐管３により導入された圧力水を、ノズル４により加速し高速のジエット水流としてハウジング５内に設置され水車軸６に支持されたランナ７の外周に取り付けられたバケット８に当てて水動力を伝えた後、放水路９に排出する構造となっている。前記したノズル４にはニードル装置１０が取り付けられており、このニードル装置１０の操作によるニードル１１の出し入れにより水車の起動停止制御、水車調速制御及び起動後の流量制御が行われる。 FIG. 2 is a longitudinal sectional view of a conventional horizontal axis Pelton turbine. The Pelton turbine is an impact turbine suitable for a high head point, and has characteristics that even if the flow rate changes greatly, if the head fluctuation is small, the efficiency is relatively small and the driving performance is good. The Pelton turbine is divided into a horizontal axis and a vertical axis depending on the installation state of the turbine and the generator.
As shown in FIG. 2 , the horizontal axis Pelton turbine fully opens an inlet valve 2 composed of an open / close valve such as a butterfly valve, a biplane valve, or a rotary valve connected to the hydraulic pipe 1. The pressure water introduced by the connected branch pipe 3 is accelerated by a nozzle 4 and applied to a bucket 8 attached to the outer periphery of a runner 7 installed in a housing 5 and supported by a water wheel shaft 6 as a high-speed jet water flow. After the water power is transmitted, the water is discharged into the water discharge channel 9. A needle device 10 is attached to the nozzle 4 described above, and the start / stop control of the water wheel, the speed control of the water wheel, and the flow rate control after the start are performed by inserting and removing the needle 11 by operating the needle device 10.

図２に示すように、横軸ペルトン水車においてノズル４を２つ以上備える場合には、水圧管１の端に分岐管３を連結し、入口曲管を経て各ノズル４を設けるようにしている。 As shown in FIG. 2 , when two or more nozzles 4 are provided in the horizontal axis Pelton turbine, the branch pipe 3 is connected to the end of the hydraulic pipe 1, and each nozzle 4 is provided via an inlet curved pipe. .

ところで、立軸ペルトン水車においては構造上ノズル数が４個ないし６個の構造の例があるが、横軸ペルトン水車の場合には、前記ノズルに設けられているニードル装置がノズルの端部の配管外部に取り付けられており、ノズルを２個以上設ける構成とすることは、分岐管の設置の困難さや建設コストが増加することから採用はされておらず、そのため横軸ペルトン水車の流量適用範囲も制限されていた。また、ニードル装置及び前記した制御装置は精密な機器であることから故障の発生率が高いという問題もあった。   By the way, in the case of a vertical shaft Pelton turbine, there is an example in which the number of nozzles is four to six in terms of structure. It is attached to the outside, and it is not adopted to have a configuration in which two or more nozzles are provided because the difficulty of installing the branch pipe and the construction cost increase, so the flow rate application range of the horizontal axis Pelton turbine is also It was restricted. In addition, since the needle device and the control device described above are precise devices, there is also a problem that a failure occurrence rate is high.

この発明の課題は、構造が簡単で、かつ安価な構成からなる流量制御が可能な横軸ペルトン水車の構造を提供することにある。   An object of the present invention is to provide a structure of a horizontal axis Pelton turbine having a simple structure and capable of controlling a flow rate with an inexpensive structure.

上記した課題を解決するために、この発明は、入口弁を備えた水圧管に分岐管を介して複数のノズルを接続して構成された横軸ペルトン水車において、各ノズルにはニードル装置を設けず、１個のノズルを除き他のノズルの入口にそれぞれ開閉弁を設け、入口弁を徐々に開いて水車を起動させ、起動後は入口弁を全開して開閉弁の開閉により流量を制御する。   In order to solve the above-described problems, the present invention provides a horizontal axis Pelton turbine in which a plurality of nozzles are connected to a hydraulic pipe having an inlet valve via a branch pipe, and each nozzle is provided with a needle device. First, open / close valves are provided at the inlets of the other nozzles, except for one nozzle, and the water wheel is started by gradually opening the inlet valve. After the start, the inlet valve is fully opened and the flow rate is controlled by opening / closing the open / close valve. .

これにより、入口弁が全開した起動後の流量の制御は、全流量に対して開閉弁を設けたノズル分の流量の制御ができ、開閉弁の開閉により流量を制御することが可能な構造が簡素化された横軸ペルトン水車を得ることができる。   As a result, the control of the flow rate after startup when the inlet valve is fully opened can control the flow rate for the nozzle provided with the open / close valve with respect to the full flow rate, and the flow rate can be controlled by opening / closing the open / close valve. A simplified horizontal axis Pelton turbine can be obtained.

ニードル装置を設けないで、一個のノズルを除き他のノズルの入口に開閉弁を設ける構成とすることにより、全流量に対して開閉弁を設けたノズル分の流量制御ができる構造が簡単な２射以上の横軸ペルトン水車を得ることができる。   By providing a configuration in which an open / close valve is provided at the inlet of other nozzles except for one nozzle without providing a needle device, the structure that can control the flow rate of the nozzles provided with the open / close valve for the entire flow rate is simple 2 You can get a horizontal axis Pelton turbine more than a shot.

以下この発明の実施の形態を図に基づいて説明する。
（実施の形態）
図１は、この発明の実施形態を示す横軸ペルトン水車の部分縦断面図である。なお、図２と同じ部位には同じ符号を付して詳細な説明は省略する。
図１には、ノズルの部分の整流装置の記載を省略してある。この実施の形態は、1個のノズルを除き、他の各ノズルに開閉弁を設けることにより流量調節を行う構成としたものである。 Embodiments of the present invention will be described below with reference to the drawings.
(Embodiment)
FIG. 1 is a partial longitudinal sectional view of a horizontal axis Pelton turbine showing an embodiment of the present invention . In addition, the same code | symbol is attached | subjected to the same site | part as FIG. 2, and detailed description is abbreviate | omitted.
FIG. 1 is omitted the description of rectifier portion Roh nozzle. This embodiment, except for one nozzle, is obtained by a configuration in which a flow control by providing on-off valve to each of the other nozzles.

図１に示す３個のノズルからなる３射式の場合には、２個のノズル４ａ，４ｂのみに開閉弁１２，１３をそれぞれ設置する構成とする。この実施の形態の横軸ペルトン水車においては、水車の起動には、入口弁２を徐々に開いて、開閉弁１２，１３を備えていないノズル４ｃからの圧力水によりランナ７を回転開始させて行う。起動後は入口弁２の開動作をそのまま継続して全開して規定回転速度に至った時点で併設されている発電機を並入するようにして、その後は流量に応じて各ノズル４ａ，４ｂに設けた開閉弁１２，１３の開閉により流量制御を行う。   In the case of a three-shot type composed of three nozzles as shown in FIG. 1, the on-off valves 12 and 13 are installed only on the two nozzles 4a and 4b, respectively. In the horizontal axis Pelton turbine of this embodiment, when the turbine is started, the inlet valve 2 is gradually opened, and the runner 7 is started to rotate by the pressure water from the nozzle 4c not provided with the on-off valves 12 and 13. Do. After the start-up, the opening operation of the inlet valve 2 is continued as it is and fully opened to reach the specified rotational speed so that a generator is installed in parallel. Thereafter, the nozzles 4a and 4b are arranged according to the flow rate. The flow rate is controlled by opening and closing the on-off valves 12 and 13 provided in.

前記した３ノズルの構成の場合には、全流量の１／３までは、開閉弁１２，１３を全閉して１射運転とする。流量が全流量の１／３以上で２／３までになったときは、開閉弁１２を全開して２射運転とする。また、全流量となった場合には、更に開閉弁１３を全開することにより３射運転とすることにより、全流量の１／３毎の流量調節が可能となる。   In the case of the above-described three-nozzle configuration, the on-off valves 12 and 13 are fully closed to perform one-shot operation up to 1/3 of the total flow rate. When the flow rate is 1/3 or more of the total flow rate and reaches 2/3, the on-off valve 12 is fully opened to perform the two-shot operation. Further, when the full flow rate is reached, the flow rate can be adjusted every 1/3 of the total flow rate by further opening the on-off valve 13 to perform the three-shot operation.

この発明の実施の形態を示す横軸ペルトン水車の縦断面図である。It is a longitudinal section of a horizontal axis Pelton turbine showing an embodiment of the present invention. 従来の横軸ペルトン水車の縦断面図である。It is a longitudinal cross-sectional view of the conventional horizontal axis Pelton turbine.

１ 水圧管
２ 入口弁
３ 分岐管
４ａ ノズル
４ｂ ノズル
４ｃ ノズル
９ 放水路
１２ 開閉弁
１３ 開閉弁 DESCRIPTION OF SYMBOLS 1 Water pressure pipe 2 Inlet valve 3 Branch pipe 4a Nozzle 4b Nozzle 4c Nozzle 9 Water discharge path 12 On-off valve 13 On-off valve

Claims (1)

入口弁を備えた水圧管に分岐管を介して複数のノズルを接続して構成された横軸ペルトン水車において、前記各ノズルにはニードル装置を設けず、１個のノズルを除き他のノズルの入口にそれぞれ開閉弁を設け、前記入口弁を徐々に開いて水車を起動させ、起動後は前記入口弁を全開して前記開閉弁の開閉により流量を制御することを特徴とする横軸ペルトン水車。   In a horizontal axis Pelton turbine constituted by connecting a plurality of nozzles to a water pressure pipe provided with an inlet valve via a branch pipe, each nozzle is not provided with a needle device, and other nozzles except for one nozzle are provided. A horizontal axis Pelton turbine characterized in that an opening / closing valve is provided at each inlet, the inlet valve is gradually opened to start a water turbine, and after startup, the inlet valve is fully opened and the flow rate is controlled by opening / closing the opening / closing valve. .
JP2006270771A 2006-10-02 2006-10-02 Horizontal axis Pelton turbine Expired - Fee Related JP4495129B2 (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
JP2006270771A JP4495129B2 (en) 2006-10-02 2006-10-02 Horizontal axis Pelton turbine

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP19836596A Division JP3882947B2 (en) 1996-07-09 1996-07-09 Horizontal axis Pelton turbine

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JP2007032575A JP2007032575A (en) 2007-02-08
JP4495129B2 true JP4495129B2 (en) 2010-06-30

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2953565B1 (en) * 2009-12-08 2012-04-20 Alstom Hydro France DISTRIBUTION ASSEMBLY FOR PELTON TURBINE WHEEL AND PELTON TURBINE HAVING SUCH A DISPENSING ASSEMBLY
CN103016245A (en) * 2013-01-24 2013-04-03 王耀洲 Impact turbine spray and flow control device and method thereof
CN109058026A (en) * 2018-07-25 2018-12-21 赵子花 Vane type hydroelectric power generating apparatus
CN110500230B (en) * 2019-09-24 2021-01-26 云南省玉溪水力发电设备有限责任公司 Water turbine with adjusting and replacing functions

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