JPS6322181Y2 - - Google Patents
Info
- Publication number
- JPS6322181Y2 JPS6322181Y2 JP14536082U JP14536082U JPS6322181Y2 JP S6322181 Y2 JPS6322181 Y2 JP S6322181Y2 JP 14536082 U JP14536082 U JP 14536082U JP 14536082 U JP14536082 U JP 14536082U JP S6322181 Y2 JPS6322181 Y2 JP S6322181Y2
- Authority
- JP
- Japan
- Prior art keywords
- gate
- overflow
- curve
- blade
- shape
- 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.)
- Expired
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 210000003462 vein Anatomy 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Landscapes
- Barrages (AREA)
Description
【考案の詳細な説明】
この考案は、ダム、河川等に設置されるローラ
ーゲート・二段式ローラーゲートなどの越流形ゲ
ートの上面形状に関するものである。[Detailed description of the invention] This invention relates to the top surface shape of overflow type gates such as roller gates and two-stage roller gates installed in dams, rivers, etc.
従来、ローラーゲートあるいは二段式ローラー
ゲート11の上端越流部12の縦断側面形状は、
第1図に示すような、越流水深によつて求められ
た刃形ぜきの上を流れる自由越流水脈の下面形状
(一般にクリーガー曲線と云われている)略同じ
からなるものと、第2図に示されているような大
きい勾配(1:5)を有するものが一般的であ
る。ところが前者の場合には、第3図に示すよう
に、越流部12の支配断面より下流側の部分に負
圧が発生し、振動を起す原因となつている。ま
た、後者の場合には、第4図に示すように越流部
12全体に下向きの大きな力が作用し、そのため
にゲートを昇降させるとき、その巻上荷重が増大
して巻上機の容量を大きくしなければならず、極
めて不経済になるという問題がある。 Conventionally, the vertical side shape of the upper overflow section 12 of a roller gate or two-stage roller gate 11 is as follows:
As shown in Fig. 1, there are two types of free overflow veins that have almost the same lower surface shape (generally called the Krieger curve) flowing above the blade-shaped weir determined by the overflow water depth, and A large slope (1:5) as shown in Figure 2 is common. However, in the former case, as shown in FIG. 3, negative pressure is generated in the downstream side of the dominant cross section of the overflow section 12, causing vibration. In the latter case, as shown in Fig. 4, a large downward force acts on the entire overflow section 12, and therefore, when the gate is raised or lowered, the hoisting load increases and the capacity of the hoisting machine increases. There is a problem in that it has to be made larger, making it extremely uneconomical.
この考案は、上記問題点すなわち、振動の原因
となる負圧発生および圧力増大を解消せしめるこ
とを目的としてなされたものである。 This invention was made with the aim of solving the above-mentioned problems, that is, the generation of negative pressure and the increase in pressure that cause vibrations.
すなわち、この考案は、上面を水が流れるよう
にせられたローラーゲートなどの越流ゲートにお
いて、ゲート上端越流面を縦断側面形状がクリー
ガー曲線すなわち、刃形ぜきの上を流る自由越流
水脈の下面形状と略同じ曲線からなり、しかも下
流側端(越流部終端)がこの曲線の頂点とるよう
に構成したことを特徴としている。かかる構成に
より、ゲート上端越流面には負圧が発生せず、し
かも下向きに作用する力がさほど大きくならない
ので、振動が生起せず、ゲート昇降時の巻上荷重
も増大しない。 In other words, this invention is based on an overflow gate such as a roller gate that allows water to flow on the upper surface, and the longitudinal side surface of the upper overflow surface of the gate has a Krieger curve, that is, free overflow water flowing over a blade-shaped weir. It is characterized in that it consists of a curve that is approximately the same as the shape of the lower surface of the vein, and that the downstream end (the end of the overflow section) is the apex of this curve. With this configuration, no negative pressure is generated on the overflow surface at the upper end of the gate, and the force acting downward does not become very large, so that vibration does not occur and the hoisting load does not increase when the gate is raised and lowered.
第5図はこの考案の好ましい一実施例を示すも
ので、越流ゲート1は、その上端越流面2の縦断
面形状が、越流水深Hにより求めた刃形ぜきの上
を流れる自由越流水脈の下面形状、特にその上流
側部分すなわち刃形ぜきの上辺を離れた直後から
頂点までの曲線と略同じからなり、しかもゲート
1の下流側端(越流部終端)Tがこの曲線の頂点
となるように構成されている。ゲート1から越流
する水深Hが、ゲート1の厚さDに対して大き
い、いわゆる刃形越流に対して特に有効であり、
上端越流面2の圧力分布を側定した結果の一例を
示せば第6図のとおりである。この第6図と第3
図および第4図とを比較すれば明らかなように、
本考案の実施例では、上端越流面2が前記曲線か
らなる曲面であるから、この上端越流面2に作用
する越流水の圧力分布が、第6図のように下流側
端に向かつて漸次小さくなり、しかも、0に近づ
いているが負圧が発生していないので振動が誘発
される恐れがない。 FIG. 5 shows a preferred embodiment of this invention, in which the vertical cross-sectional shape of the upper overflow surface 2 of the overflow gate 1 allows the flow to flow freely over the blade-shaped weir determined by the overflow water depth H. The shape of the lower surface of the overflow water vein, especially its upstream part, that is, the curve from just after leaving the upper side of the blade-shaped weir to the apex, is approximately the same, and the downstream end of gate 1 (the end of the overflow part) T is similar to this curve. It is configured to be the apex of the curve. It is particularly effective against so-called blade-shaped overflow where the water depth H overflowing from the gate 1 is greater than the thickness D of the gate 1.
An example of the results of determining the pressure distribution on the upper overflow surface 2 is shown in FIG. This figure 6 and 3
As is clear from the comparison between Figure 4 and Figure 4,
In the embodiment of the present invention, since the upper end overflow surface 2 is a curved surface consisting of the above-mentioned curve, the pressure distribution of the overflow water acting on the upper end overflow surface 2 is directed toward the downstream end as shown in FIG. Although the pressure gradually decreases and approaches zero, no negative pressure is generated, so there is no risk of vibration being induced.
また、第4図と第6図の比較から明白なよう
に、ゲート1の上端越流面2に作用する圧力が、
本考案では略直線的に減少しているのに比べて従
来例ではゲート中央部分で上凸状にふくらみをも
つている。 Also, as is clear from a comparison of Figs. 4 and 6, the pressure acting on the upper end overflow surface 2 of the gate 1 is as follows:
In the present invention, the gate decreases in a nearly linear manner, whereas in the conventional example, the gate has an upward convex bulge at the center.
したがつてゲート上端越流面2全体に受ける下
むきの力は、本考案では従来例に比べて小さく、
ゲート昇降時の巻上荷重が軽減される。 Therefore, the downward force applied to the entire overflow surface 2 at the upper end of the gate is smaller in the present invention than in the conventional example.
The hoisting load when raising and lowering the gate is reduced.
なお、第3,4および6図の圧力測定にはゲー
ト背面空間(下流側)に負圧を生起せしめないよ
うに空気が供給されている。 Note that air is supplied to the pressure measurements in FIGS. 3, 4, and 6 so as not to generate negative pressure in the space behind the gate (downstream side).
この考案は、上述のような構成であるから、従
来の越流ゲートと比較して、その製作においても
何ら遜色がなく容易であり、越流能率が低下する
ことなく、また、ゲート上端越流面に負圧が発生
しないので振動の原因が取り除かれ、しかもゲー
ト越流面全体に作用する下向きの力を減少せしめ
うるのでゲート昇降時の巻上荷重が増大せず、し
たがつて巻上機の容量を小さくし経済性を高めう
るなどの効果を奏する。 Since this device has the above-mentioned configuration, it is easier to manufacture than conventional overflow gates, and there is no reduction in overflow efficiency. Since no negative pressure is generated on the surface, the cause of vibration is removed, and the downward force acting on the entire gate overflow surface can be reduced, so the hoisting load when raising and lowering the gate does not increase, and the hoisting machine This has the effect of reducing the capacity and improving economic efficiency.
第1〜4図は従来例を示すもので、第1図およ
び第2図は越流ゲートの概略側面図、第3図は第
1図のゲートにおける越流面の圧力分布図、第4
図は第2図のゲートにおける越流面の圧力分布
図、第5〜6図はこの考案の一実施例を示すもの
で第5図はゲートの概略側面図、第6図はこの考
案にかかるゲートにおける越流面の圧力分布図で
ある。
1……越流ゲート、2……上端越流面、T……
頂点。
Figures 1 to 4 show conventional examples; Figures 1 and 2 are schematic side views of the overflow gate; Figure 3 is a pressure distribution diagram on the overflow surface of the gate in Figure 1;
The figure is a pressure distribution diagram on the overflow surface of the gate shown in Figure 2. Figures 5 and 6 show an embodiment of this invention. Figure 5 is a schematic side view of the gate, and Figure 6 is a diagram of this invention. It is a pressure distribution map of the overflow surface in a gate. 1...Overflow gate, 2...Top overflow surface, T...
vertex.
Claims (1)
トなどの越流ゲートにおいて、ゲート上面を縦断
面形状が、刃形ぜきの上を流れる自由越流水脈の
下面形状、特にその上流側部分と略同じ曲線から
なり、しかもゲート上面の下流側端が前記曲線の
頂点となるように構成したことを特徴とする越流
ゲート。 In an overflow gate such as a roller gate that allows water to flow on the upper surface, the vertical cross-sectional shape of the upper surface of the gate is approximately the same as the lower surface shape of the free overflow vein flowing above the blade-shaped weir, especially the upstream part thereof. What is claimed is: 1. An overflow gate comprising a curved line and configured such that the downstream end of the upper surface of the gate is the apex of the curved line.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14536082U JPS5947724U (en) | 1982-09-22 | 1982-09-22 | overflow gate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14536082U JPS5947724U (en) | 1982-09-22 | 1982-09-22 | overflow gate |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5947724U JPS5947724U (en) | 1984-03-29 |
JPS6322181Y2 true JPS6322181Y2 (en) | 1988-06-17 |
Family
ID=30323877
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14536082U Granted JPS5947724U (en) | 1982-09-22 | 1982-09-22 | overflow gate |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5947724U (en) |
-
1982
- 1982-09-22 JP JP14536082U patent/JPS5947724U/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5947724U (en) | 1984-03-29 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
KR100964883B1 (en) | Thrust foil air bearing | |
JPS5690119A (en) | Tapered-land type thrust bearing | |
JPS6322181Y2 (en) | ||
JPS6322180Y2 (en) | ||
US3326000A (en) | Immersed pipe structure | |
JPS6015779Y2 (en) | gate | |
CN205134288U (en) | Be suitable for sluice breastwork structure of dominant discharge | |
JPS61169140U (en) | ||
CN220225183U (en) | Differential type aeration flip bucket | |
CN103835270B (en) | Hollow out base plate contraction type energy dissipating method and energy dissipater | |
CN206956670U (en) | A kind of water-breaking structure of the bridge construction with drainage function | |
JPS5837212A (en) | Rubber flap gate | |
JPS6235688Y2 (en) | ||
JPS5817909A (en) | Reducing device for sound of falling water from sluice gate | |
SE9501031L (en) | Air lock for a full flow well | |
JPS5811936Y2 (en) | Thrust bearing device | |
JPS5830784U (en) | Eddy current prevention device | |
JPS6032419U (en) | The top of the erosion control dam | |
JPS6029478Y2 (en) | Flat plate multi-stage water intake gate | |
JPS6021351Y2 (en) | semi-submerged boat | |
JPS6141924Y2 (en) | ||
JPH01210513A (en) | Revetment block and revetment structure | |
JPH11336108A (en) | Rubber gasket for sunk case | |
JPH0139665Y2 (en) | ||
JPS6164595A (en) | Board for board sailing |