JPS6092509A - Cylinder gate - Google Patents
Cylinder gateInfo
- Publication number
- JPS6092509A JPS6092509A JP20119883A JP20119883A JPS6092509A JP S6092509 A JPS6092509 A JP S6092509A JP 20119883 A JP20119883 A JP 20119883A JP 20119883 A JP20119883 A JP 20119883A JP S6092509 A JPS6092509 A JP S6092509A
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- gate
- water
- pressure
- lowermost
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
- E02B7/26—Vertical-lift gates
- E02B7/32—Cylindrical or tubular gates
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Barrages (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は、ダム貯水池・沈澱池などの表層水等を取水
するためのシリンダーゲートに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylinder gate for taking in surface water, etc. from a dam reservoir, a sedimentation pond, etc.
一般に、シリンダーゲートは、複数の取水シリンダーが
上下方向伸縮自在に設けられ、その最上段シリンダーの
上端がベルマウス（またはラッパ）状に開口した取水口
とせられ、かつ取水口の上方にフロートが連設され、最
下段シリンダーの下端が導水路に連通せられ、取水口が
フロートによって所定の水面下に位置しかつ水位に追従
するように構成されている。かかるシリンダゲートでは
、最下段を除く他の取水シリンダーは、フロートの浮力
により所定位置に浮いた状態とせられている。そして、
各取水シリンダーは、各シリンダー内が負圧になっても
圧壊しないように設計され、特に保安ゲー ト等は設け
られていないのか現状である。In general, a cylinder gate has a plurality of water intake cylinders that are vertically expandable and retractable, with the upper end of the top cylinder serving as a water intake opening in the shape of a bell mouth (or trumpet), and a float connected above the water intake. The lower end of the lowermost cylinder is communicated with the water conduit, and the water intake is positioned below a predetermined water surface by a float and configured to follow the water level. In such a cylinder gate, the water intake cylinders other than the lowest stage are kept floating in predetermined positions due to the buoyancy of the float. and,
Each water intake cylinder is designed so that it will not collapse even if the pressure inside each cylinder becomes negative, and there are currently no safety gates installed.
ところが、シリンダー内に負圧が生じると、各シリンダ
ー間を止水しでいる水密ゴムが破損し、上下シリンダー
間から高速流の水がシリンダー内に流入するため、シリ
ンダーは激しい振動が発生する。このような振動を防止
するには、保安ゲートを別個に設けるとよいのであるが
、シリンダーゲートのメリットが半減するという問題が
ある。However, when negative pressure occurs inside the cylinder, the watertight rubber that seals water between the cylinders breaks, and water flows at high speed from between the upper and lower cylinders into the cylinder, causing the cylinder to vibrate violently. In order to prevent such vibrations, it would be better to provide a separate safety gate, but there is a problem that the advantage of the cylinder gate is halved.
この発明は、上述のような実情に鑑みてなされたもので
、シリンダー内が負圧になった場合においても保安ゲー
トを配設しないでもシリンダー内を水圧バランス状態に
することができ、水蜜ゴムの破損およびシリンダーの振
動を防止することができるシリンダーゲートを得ること
を目的としている。This invention was made in view of the above-mentioned circumstances, and even if the pressure inside the cylinder becomes negative, it is possible to maintain a water pressure balance state in the cylinder without installing a security gate, and it is possible to maintain water pressure balance in the cylinder without installing a safety gate. The aim is to obtain a cylinder gate that can prevent damage and cylinder vibration.
すなわち、この発明は、複数の取水シリンダーが上下方
向伸縮自在に設けられ、最上段シリンダーの上端に取水
盆が設けられ、かつ取水盆の上方にフロートが連接され
、最下段シリンダーの下端が導水路に連通された形式の
シリンダーゲートにおいて、シリンダーゲート内圧力が
所定値以下に低下した場合に最下段ゲートが浮上するよ
うに最下段ゲートに浮力生成手段が設けられたことを特
徴としている。この発明における浮力生成手段としては
１通常のシリンダー内外水圧バランス状態では、最下段
シリンダーの自重（Ｗ）とシリンダー内水圧（ＩＰ）に
よる下向きの力の和が、シリンダー外側の外水圧（ｏｐ
）によ石上向きの力（浮力）よりも太きくなり、非常時
（負圧時）には外水圧（ＵＰ）による上向きの力（浮力
）がシリンダー自重（Ｗ）と内水圧（ＩＰ）による下向
きの力および水密ゴム抵抗（Ｆｇ）よりも大きくなるよ
うな傾斜部または段差部（たとえば膨径部）を、最下段
シリンダーに形成すれはよい。したがって、最下段シリ
ンダーは１通常の取水状態では、その下端が導水路の開
口端縁に圧着され、かつ止水されて水蜜状態となってい
るが、非常時には、シリンダー内水圧が低下し、負圧に
なるので外水圧による浮力のために最下段シリンダーは
自動的に浮上せしめられ、最下段シリンダーの下端の水
密が解かれて池水がこれと導水路開口上縁との間から流
入して導水路およびシリンダー内を充満させ、内外水圧
がバランス状態を保つに至り、各シリンダー間の水密ゴ
ムの破損がなく、かつシリンダーの振動も発生せず、安
定した取水ができシリンダーゲートの保安が可能となる
。That is, in this invention, a plurality of water intake cylinders are provided vertically expandable and retractable, a water intake basin is provided at the upper end of the uppermost cylinder, a float is connected above the water intake basin, and the lower end of the lowermost cylinder is connected to the water conduit. The cylinder gate is characterized in that the lowermost gate is provided with buoyancy generating means so that the lowermost gate floats when the internal pressure of the cylinder gate drops below a predetermined value. The buoyancy generating means in this invention is as follows: 1. In a normal cylinder internal and external water pressure balance state, the sum of the downward force due to the own weight (W) of the lowest cylinder and the cylinder internal water pressure (IP) is the external water pressure (OP) outside the cylinder.
) is greater than the upward force (buoyancy) due to the cylinder, and in an emergency (at negative pressure), the upward force (buoyancy) due to the external water pressure (UP) is due to the cylinder's own weight (W) and internal water pressure (IP). A sloped portion or a stepped portion (for example, a swollen diameter portion) that is larger than the downward force and watertight rubber resistance (Fg) may be formed in the lowermost cylinder. Therefore, under normal water intake conditions, the lower end of the lowest cylinder is pressed against the opening edge of the water conduit, and the water is shut off, resulting in a wet state. However, in an emergency, the water pressure inside the cylinder decreases and becomes negative. The bottom cylinder is automatically floated due to the buoyancy caused by the external water pressure, and the water tightness at the bottom of the bottom cylinder is broken, allowing pond water to flow in from between this and the upper edge of the water conduit opening. The water channel and the inside of the cylinder are filled, and the internal and external water pressures are kept in a balanced state.The watertight rubber between each cylinder is not damaged, and the cylinder does not vibrate, allowing stable water intake and ensuring the security of the cylinder gate. Become.
以下、この発明の笑施例を図面に基づいて詳細に説明す
る。Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
図面において、（１）はシリンダーゲートで、取水シリ
ンダー（２）（３） （４）を上下方向に伸縮自在に構
成し、貯水池（５）等に立設された取水塔（図示省略）
に、先端にガイドローラ（図示省略）を有する支持アー
ム（図示省略）を介して支持され。In the drawing, (1) is a cylinder gate, which consists of water intake cylinders (2), (3), and (4) that can be expanded and contracted in the vertical direction, and is used as a water intake tower (not shown) installed in a reservoir (5), etc.
is supported via a support arm (not shown) having a guide roller (not shown) at its tip.
かつ水面変動に応じて上下案内されるようになっている
。最上段シリンダー（２）の上端部には、外方に向って
拡開されたラッパ状の取水盆（６）が固着され、最下段
シリンダー（４）の下端は、埋設導水路（７）に連通さ
れている。なお、図示されていないが、各取水シリンダ
ー（２） ＋３） （４）の連接部には係止リングが固
着され、ガイドローラが介装されると共にそれぞれ水密
ゴムが装着され、これによって伸縮を円滑ならしめかつ
表層水以外の水がシリンダーゲート（１）内に流入しな
いようになされている。Moreover, it is designed to be guided up and down according to changes in the water level. A trumpet-shaped water intake basin (6) that expands outward is fixed to the upper end of the uppermost cylinder (2), and the lower end of the lowermost cylinder (4) is connected to a buried water conduit (7). It is communicated. Although not shown, a locking ring is fixed to the connecting portion of each water intake cylinder (2) +3) (4), a guide roller is interposed, and a watertight rubber is attached to each of them, thereby preventing expansion and contraction. The cylinder gate (1) is designed to be smooth and to prevent water other than surface water from flowing into the cylinder gate (1).
また、前記取水盆（６）の上面には５略コマ形の中梁フ
ロート（８）が複数本のボルトおよびナツト（図示省略
）により間隔調整可能に取付けられている。そして、最
下段シリンダー（４）には、浮力生成手段として膨径部
（９）が設けられている。Moreover, five approximately top-shaped middle beam floats (8) are attached to the upper surface of the water intake basin (6) with a plurality of bolts and nuts (not shown) so that the intervals can be adjusted. The lowermost cylinder (4) is provided with an expanded diameter portion (9) as a buoyancy generating means.
第１図に示されている第１実施例では、最下段シリンダ
ー（４）の下部（４Ｎ）を残して上方の大部分が直径を
大きくした膨径部（４Ｂ）とせられ、段差部（９）が形
成されている。この段差部（９）の面積（Ａ）は、通常
、Ｗ＋１１−ｊ・Ａ〉、ＯＰ−人（・１式〕を満足し、
かつシリンダー内水圧（ＩＰ）が低下した非常時に、Ｗ
＋ＩＰ・Ａ＋Ｆｇ（ＯＰ−Ａ （２式）を満足するよう
に設計される。ここで（Ｗ）は最下段シリンダー（４）
の自重。In the first embodiment shown in FIG. 1, most of the upper part of the lowermost cylinder (4) except for the lower part (4N) is made into an enlarged diameter part (4B) with a larger diameter, and the stepped part (9 ) is formed. The area (A) of this stepped portion (9) usually satisfies W + 11-j・A〉, OP-person (・1 equation),
In an emergency when the cylinder water pressure (IP) drops, W
+IP・A+Fg (OP-A (2 types).Here, (W) is the lowest cylinder (4)
dead weight.
（ｏｐ）はシリンダー外側の水圧、（Ｆｇ）は水密ゴム
の摺動抵抗である。このような浮生成手段を構じること
によって、万一、シリンダーゲート（１）内圧力が低下
し、負圧状態になった場合、前記２式を満足するので最
下段シリンダー（４）は浮上し、外水が導水路（７）開
口上縁とシリンダー（４）下端の間から流入してシリン
ダーゲート（１）内を水圧バランス状態に保持すること
ができる。したがって、各取水シリンダー（２） ＋３
） （４）間に設けられている水密ゴムの破損はなく、
またシリンダ−（２） （３） （４）の振動も生起し
ない。(op) is the water pressure outside the cylinder, and (Fg) is the sliding resistance of the watertight rubber. By providing such a floating means, in the event that the pressure inside the cylinder gate (1) decreases and becomes a negative pressure state, the lowermost cylinder (4) will float because the above two equations are satisfied. However, outside water can flow in from between the upper edge of the opening of the water conduit (7) and the lower end of the cylinder (4) to maintain the inside of the cylinder gate (1) in a hydraulically balanced state. Therefore, each water intake cylinder (2) +3
) (4) There was no damage to the watertight rubber installed in between.
Also, no vibration occurs in the cylinders (2), (3), and (4).
第２図に示されている第２実施例では、最下段シリンダ
ー（４）は、浮力生成手段として、その下端（４Ａ）が
最小径であり、上端膨径部（４Ｂ）が最大径で中間シリ
ンダー（３）の直径よりも太いテーパ管とせられ、第１
図に示す第１実飽例と同様に前記１式および２式を満足
するように設計され、同等の作用、効果が期待できるよ
うに構成されている。In the second embodiment shown in FIG. 2, the lowermost cylinder (4) is used as a buoyancy generating means, with its lower end (4A) having a minimum diameter, and its upper end enlarged diameter portion (4B) having a maximum diameter and an intermediate diameter. The first pipe is made into a tapered pipe that is thicker than the diameter of the cylinder (3).
Like the first saturation example shown in the figure, it is designed to satisfy the above-mentioned equations 1 and 2, and is constructed so that equivalent operations and effects can be expected.
また、第３図に示されている第３実砲例では、最下段シ
リンダー（４）の浮力生成手段として、その上部外周に
浮力タンク（１［）が設けられかつ浮力タンク（ｉｔ）
内周面（シリンダー（４）の壁）に適当数の通水孔（ロ
）が設けられており１段差部（９）の面積（イ）は第１
図の第１実施例と同様に前記１式および２式を満足する
ように設計されている。したがって、この第３実施例に
おいても、シリンダーゲート（１）内が負圧になると浮
力タンクα１内の圧力が低下し、第１実施例と同等の作
用効果が期待できる。In addition, in the third actual gun example shown in FIG. 3, a buoyancy tank (1[) is provided on the upper outer periphery of the lowermost cylinder (4) as a buoyancy generating means for the lowermost cylinder (4).
An appropriate number of water holes (b) are provided on the inner peripheral surface (wall of the cylinder (4)), and the area (a) of the first step (9) is
Like the first embodiment shown in the figure, it is designed to satisfy equations 1 and 2 above. Therefore, in this third embodiment as well, when the pressure inside the cylinder gate (1) becomes negative, the pressure inside the buoyancy tank α1 decreases, and the same effects as in the first embodiment can be expected.
第４図および第５図は、第４実施例を示すもので、上段
側取水シリンダーの直径が大きく外側に位置するように
構成され、浮力生成手段として、最下段シリンダー（４
）の下部外周に浮力タンクα１が設けられている。そし
て、各取水シリンダー（２） （３） （４）の下端に
も水密ゴム（２）が設けられており、第５図に示されて
いるように、ダム水位が低下し、てシリンダーゲート（
１）が最下位置に達した状態では、浮力タンク０１の上
面と下面に作用する力のバランスがくずれて浮力が増大
してシリンダーゲート（１）内が負圧になるとシリンダ
ーゲート（１）が浮上するように構成されているうなお
、浮力タンク（１０の内周面（最下段シリンダー（４）
の壁面）に適当数の通水孔（図示省略）を設けることに
よって、第３実施例と同様に、最下位置でなくても、シ
リンダーゲート（１）内が負圧になった場合浮力タンク
α０内圧力も低下して。4 and 5 show a fourth embodiment, in which the upper water intake cylinder has a large diameter and is located on the outside, and the lowermost cylinder (4
) is provided with a buoyancy tank α1 on the lower outer periphery. Watertight rubber (2) is also provided at the lower end of each water intake cylinder (2), (3), and (4), and as shown in Figure 5, when the dam water level falls, the cylinder gate (
1) reaches the lowest position, the balance between the forces acting on the top and bottom surfaces of the buoyancy tank 01 is disrupted, the buoyancy increases, and when the inside of the cylinder gate (1) becomes negative pressure, the cylinder gate (1) closes. The inner peripheral surface of the buoyancy tank (10 (lowest cylinder (4)) is configured to float.
By providing an appropriate number of water holes (not shown) in the wall surface of the cylinder gate (1), as in the third embodiment, even if the cylinder gate (1) is not at the lowest position, if the inside of the cylinder gate (1) becomes negative pressure, the buoyancy tank α0 internal pressure also decreased.
最下段シリンダー（４）が浮上し、外水を流入させて水
圧バランス状態にすることができる。The lowest cylinder (4) floats up, allowing outside water to flow in to create a water pressure balanced state.
この発明にかかるシリンダーゲートは、シリンダーゲー
ト内が所定圧力以下に低下した状態（負圧状態）になっ
たときに、最下段シリンダーに浮力が生成する手段を設
けたので、負圧になると最下段シリンダーが自動的に浮
上しその下端から外水がシリンダーゲート内に流入して
水圧バランス状態となり、各シリンダー間に設けられる
水密ゴムの破損荀防止することができ、また各シリンダ
ーの振動を防止できるうえ、各シリンダーも水位差設計
が可能となるため軽量化することができ、別途に保安ゲ
ートを設ける必要もなく安定した取水ができるなどの卓
越した効果を奏する。The cylinder gate according to the present invention is provided with means for generating buoyancy in the lowermost cylinder when the pressure inside the cylinder gate drops below a predetermined pressure (negative pressure state). The cylinder automatically floats up and outside water flows into the cylinder gate from its lower end, creating a water pressure balance state, which prevents damage to the watertight rubber installed between each cylinder and also prevents vibration of each cylinder. In addition, each cylinder can be designed with different water levels, making it lighter in weight, and provides outstanding effects such as stable water intake without the need to install a separate security gate.
図面はこの発明の実施例の概略構成を示すもので、第１
図は第１実施例の縦断面図、第２図は第２実施例の縦断
面図、第３図は第３実施例の縦断面図、第４図は第４実
施例の縦断面図、第５図は第４実施例におけるシリンダ
ーゲート最下位置における状態を示す縦断面図である。
（１）・・・シリンダーゲート、（２） （３） （４
）・・・取水シリンダー、 （４１３）・・・膨径部、
（５）・・貯水池、（６）・・・取水盆。
（７）・・・導水路、（９）・・・段差部、α１・・・
浮力タンク、（ロ）・・・通水孔。The drawings show a schematic configuration of an embodiment of the present invention.
The figure is a longitudinal sectional view of the first embodiment, FIG. 2 is a longitudinal sectional view of the second embodiment, FIG. 3 is a longitudinal sectional view of the third embodiment, and FIG. 4 is a longitudinal sectional view of the fourth embodiment. FIG. 5 is a longitudinal sectional view showing the state of the cylinder gate at the lowest position in the fourth embodiment. (1)...Cylinder gate, (2) (3) (4
)...Water intake cylinder, (413)...Bulging diameter part,
(5)...Reservoir, (6)...Intake basin. (7)...Hailway, (9)...Step, α1...
Buoyancy tank, (b)...water hole.
Claims (1)
最上段シリンダーの上端に取水盆が設けられ、かつ取水
盆の上方にフロートが連接され、最下段シリンダーの下
端が導水路に連通された形式のシリンダーゲートにおい
て、シリンダーゲート内圧力が所定値以下に低下した場
合に最下段ゲートが浮上するように最下段ゲートに浮力
生成手段が設けられたことを特徴とするシリンダーゲー
ト。Multiple water intake cylinders are provided that can be expanded and contracted in the vertical direction,
In a cylinder gate in which a water intake basin is provided at the upper end of the uppermost cylinder, a float is connected above the intake basin, and the lower end of the lowermost cylinder is communicated with a water conduit, the pressure inside the cylinder gate is lower than a predetermined value. A cylinder gate characterized in that the lowest gate is provided with a buoyancy generating means so that the lowest gate floats up when the cylinder gate is lowered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20119883A JPS6092509A (en) | 1983-10-27 | 1983-10-27 | Cylinder gate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20119883A JPS6092509A (en) | 1983-10-27 | 1983-10-27 | Cylinder gate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6092509A true JPS6092509A (en) | 1985-05-24 |
| JPH0250247B2 JPH0250247B2 (en) | 1990-11-01 |
Family
ID=16436969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20119883A Granted JPS6092509A (en) | 1983-10-27 | 1983-10-27 | Cylinder gate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6092509A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945677A (en) * | 2020-08-25 | 2020-11-17 | 黄河勘测规划设计研究院有限公司 | Method for reducing negative pressure at bottom of plane gate and plane gate structure thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0426403A (en) * | 1990-05-22 | 1992-01-29 | Itaru Taniguchi | Chair |
-
1983
- 1983-10-27 JP JP20119883A patent/JPS6092509A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111945677A (en) * | 2020-08-25 | 2020-11-17 | 黄河勘测规划设计研究院有限公司 | Method for reducing negative pressure at bottom of plane gate and plane gate structure thereof |
| CN111945677B (en) * | 2020-08-25 | 2021-08-03 | 黄河勘测规划设计研究院有限公司 | Method for reducing negative pressure at bottom of plane gate and plane gate structure thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0250247B2 (en) | 1990-11-01 |
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