【発明の詳細な説明】
本発明は選択取水設備における中間取水方法に関する。[Detailed description of the invention]
The present invention relates to an intermediate water intake method in selective water intake equipment.
ダムの中には、貯留水の水面下所定位置の水を選択取水
（以下、中間取水という）するために、選択取水設備を
有するものがある。この選択取水設備は、第１図〜第３
図に示すように、ダム本体１に沿つて上下方向て設けら
れた取水路２内を昇降可能に配置された多段式取水ゲー
ト３と、ダム本体１上部の機械室４内に設けられて素体
５を介して取水ゲート３を昇降させる巻上機６とから構
成されており、また取水ゲート３上方には整流板７が設
けられると共にこの整流板７下面と取水ゲート３上端面
との間には呑口部８が形成されている。なお、この呑口
部８は取水路２の取水ゲート３の背面部を介してダム本
体１底部に設けられた放流管９に連通されている。とこ
ろで、上記放流管９には、放流管９の保守・点検時に放
流管９の入口を閉鎖するための制水ゲート１０が必要と
され、このため整流板７の後方には制水ゲート昇降用の
戸溝１１が形成されている。なお、上記制水ゲート１０
も、機械室４内に設けられた巻上機１２に素体１３を介
して連結されて昇降させられる。従つて、上記状態で中
間取水を行なうと、整流板７後方の戸溝開口部１１ａか
ら水が流入して本来の選択取水の機能が損われる。そこ
で、従来、整流板７を大きくして戸溝開口部１１ａを閉
鎖するか、若しくは戸溝開口部１１ａを閉鎖する装置を
整流板７に取付けたりしていたが、どうしても余分なコ
ストが必要となり不経済であつた。そこで、本発明は上
記欠点を解消し得る選択取水設備における中間取水方法
を提供することを目的とする。即ち、本発明は整流板下
面と取水ゲート上端面との間に形成される呑口部から中
間取水を行なう際に、上記整流板後方に形成された放流
管閉鎖用制水ゲートの戸溝開口部を、該制水ゲートによ
り閉鎖することを特徴とする選択取水設備における中間
取水方法である。Some dams have selective water intake equipment to selectively take water from a predetermined position below the surface of the reservoir water (hereinafter referred to as intermediate water intake). This selective water intake equipment is shown in Figures 1 to 3.
As shown in the figure, a multi-stage water intake gate 3 is arranged so as to be movable up and down in an intake channel 2 provided vertically along the dam body 1, and a water intake gate 3 is provided in a machine room 4 at the top of the dam body 1. It is composed of a hoisting machine 6 that raises and lowers the water intake gate 3 via a body 5, and a rectifying plate 7 is provided above the water intake gate 3. A spout portion 8 is formed in the. The mouth portion 8 is connected to a discharge pipe 9 provided at the bottom of the dam body 1 via the back surface of the water intake gate 3 of the intake channel 2. Incidentally, the discharge pipe 9 requires a water control gate 10 for closing the inlet of the discharge pipe 9 during maintenance and inspection of the discharge pipe 9, and for this reason, a water control gate 10 is provided behind the current plate 7 for raising and lowering the water control gate. A door groove 11 is formed. In addition, the water control gate 10
It is also connected via a base body 13 to a hoisting machine 12 provided in the machine room 4, and is raised and lowered. Therefore, if intermediate water intake is performed in the above state, water will flow in from the doorway opening 11a behind the current plate 7, and the original selective water intake function will be impaired. Therefore, conventionally, the current plate 7 has been made larger to close the door groove opening 11a, or a device for closing the door groove opening 11a has been attached to the current plate 7, but this inevitably requires extra cost. It was uneconomical. Therefore, an object of the present invention is to provide an intermediate water intake method in selective water intake equipment that can eliminate the above-mentioned drawbacks. That is, the present invention provides a method for controlling the gate groove opening of the water control gate for closing the discharge pipe formed at the rear of the baffle plate when taking intermediate water from the spout formed between the lower surface of the baffle plate and the upper end face of the water intake gate. This is an intermediate water intake method in selective water intake equipment, characterized in that the water control gate is closed by the water control gate.
かかる方法によると、中間取水を行なう際に非使用状態
の制水ゲートを利用して制水ゲート用戸・溝の開口部を
閉鎖するので、従来のように、特別な閉鎖装置を設ける
必要がなくなり、従つて選択取水設備のコスト低減化を
図ることができる。According to this method, when performing intermediate water intake, an unused water control gate is used to close the water control gate door/ditch opening, so there is no need to provide a special closing device as in the conventional method. Therefore, it is possible to reduce the cost of selective water intake equipment.
以下、本発明の一実施例を第４図及び第５図に基づき説
明する。なお、本実施例における構成部、品は従来例で
説明したものを同一であるので、同一部品には同一番号
を使用すると共に、その詳細な説明を省略する。即ち、
ダム等において、整流板７下面と取水ゲート３上端面と
の間に形成される呑口部８から中間取水を行なう際に、
放流管閉鎖用制水ゲート１０を巻上機１２により整流板
７と同一位置にその格納位置（ダム本体上端位置）から
下降させて、整流板７後方に形成された制水ゲート用戸
溝１１の開口部１１ａを閉鎖するものである。なお、第
５図中、１４は取水ゲート用案内ローラ、１５は整流板
用案内ローラ、１６は制水ゲート用案内ローラである。
従つて、上記中間取水方法によると、非使用状態の制水
ゲートを利用して制水ゲート用戸溝の開口部を閉鎖する
ので、従来のように、特別な閉鎖装置を設ける必要がな
くなり、従つて選択取水設備のコスト低減化を図ること
ができる。An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. Note that the components and items in this embodiment are the same as those explained in the conventional example, so the same numbers are used for the same parts, and detailed explanation thereof will be omitted. That is,
In a dam etc., when performing intermediate water intake from the mouth part 8 formed between the lower surface of the current plate 7 and the upper end surface of the water intake gate 3,
The water control gate 10 for closing the discharge pipe is lowered from its storage position (the upper end position of the dam body) to the same position as the current plate 7 by the hoisting machine 12, and the water control gate groove 11 formed behind the current plate 7 is lowered. The opening 11a of the opening 11a is closed. In FIG. 5, 14 is a water intake gate guide roller, 15 is a current plate guide roller, and 16 is a water control gate guide roller.
Therefore, according to the intermediate water intake method, the opening of the water control gate groove is closed using the water control gate that is not in use, so there is no need to provide a special closing device as in the conventional method. Therefore, it is possible to reduce the cost of selective water intake equipment.
【図面の簡単な説明】[Brief explanation of drawings]
第１図は選択取水設備の縦断面図、第２図は従来の方法
における中間取水時の要部縦断面図、，第３図は第２図
のＩ−１矢視図、第４図は本発明の方法による中間取水
時の要部縦断面図、第５図は第４図の■一■矢視図であ
る。
１・・・・・・ダム本体、２・・・・・・取水路、３・
・・・・・取水ゲート、７・・・・・・整流板、８・・
・・・・呑口部、９・・・・・・放流管、１０・・・・
・・制水ゲート、１１・・・・・・戸溝。Figure 1 is a vertical cross-sectional view of the selective water intake equipment, Figure 2 is a vertical cross-sectional view of the main part during intermediate water intake in the conventional method, Figure 3 is a view taken along the I-1 arrow in Figure 2, and Figure 4 is a vertical cross-sectional view of the main part during intermediate water intake in the conventional method. FIG. 5 is a vertical cross-sectional view of the main part during intermediate water intake according to the method of the present invention, and is a view taken along arrows 1 and 2 in FIG. 1... Dam body, 2... Intake channel, 3.
... Water intake gate, 7 ... Rectifier plate, 8 ...
...Spout part, 9...Discharge pipe, 10...
...Water control gate, 11...Dozo.