JPH07158038A - Automatic sand discharging device - Google Patents
Automatic sand discharging deviceInfo
- Publication number
- JPH07158038A JPH07158038A JP33906993A JP33906993A JPH07158038A JP H07158038 A JPH07158038 A JP H07158038A JP 33906993 A JP33906993 A JP 33906993A JP 33906993 A JP33906993 A JP 33906993A JP H07158038 A JPH07158038 A JP H07158038A
- Authority
- JP
- Japan
- Prior art keywords
- sand
- water
- accumulated
- gate
- square pipes
- 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.)
- Pending
Links
Landscapes
- Barrages (AREA)
- Sewage (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水力発電所，水道施設
等において、河川取水等を行う水路に堆砂する砂，小石
等を排出する排砂装置、さらに詳しくいえば、断水を行
うことなく取水効率の向上を図った自動排砂装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sand discharging device for discharging sand, pebbles, etc. accumulated in a water channel for river water intake in a hydroelectric power plant, a water supply facility, etc. The present invention relates to an automatic sand eliminator with improved water intake efficiency.
【０００２】[0002]
【従来の技術】ダム等に溜めた水を発電所に取水する場
合、取水のための水路に堆積する砂等を排斥する必要が
ある。現在の排砂作業は、水路の途中に沈砂池を設け、
一定の砂，石が堆積すると、排砂用ゲ−トを開き排水力
によって排砂を行っているため、長時間の断水を行わな
ければならない。2. Description of the Related Art When water collected in a dam or the like is taken into a power plant, it is necessary to remove sand or the like accumulated in a water channel for water intake. The current sand removal work is to set up a sand basin in the middle of the waterway,
When a certain amount of sand and stones are accumulated, the sand discharging gate is opened and the sand is discharged by the drainage force, so the water must be cut off for a long time.
【０００３】[0003]
【発明が解決しようとする課題】発電所の場合には、停
電となって発電所の発電効率が低下し、水道施設では浄
水場水位が低下して水の供給が不安定となるため、この
点を改善することが要請されていた。本発明の目的は、
上記要請に応えるもので、堆砂を排出するための断水作
業を減少させて発電所の発電効率や浄水場における水供
給の安定化を維持できる自動排砂装置を提供することに
ある。[Problems to be Solved by the Invention] In the case of a power plant, a power outage causes power generation efficiency of the power plant to decrease, and in a water supply facility, the water level of the water purification plant decreases and the water supply becomes unstable. It was requested to improve the points. The purpose of the present invention is to
In order to meet the above-mentioned demand, it is an object of the present invention to provide an automatic sand removal device that can reduce the water cutoff work for discharging the sediment and maintain the power generation efficiency of the power plant and the stabilization of the water supply in the water purification plant.
【０００４】[0004]
【課題を解決するための手段】前記目的を達成するため
に本発明による自動排砂装置は、河川取水等のための水
路の途中に、底面に傾斜を持たせた沈砂路を設け、沈砂
路に堆積した砂等を水路の壁側に設けたゲ−トから排出
する装置において、前記沈砂路の底面の傾斜方向に沿っ
て複数本のそれぞれ長さの異なるパイプを並設し、堆砂
の状態を検出して所定の量に堆砂が進んだとき、または
一定の時間毎に前記排出ゲ−トを前記角パイプの端部の
高さより僅かに大きい量だけ開いて沈砂路に堆積した砂
等を排出するように制御する制御装置を備えて構成して
ある。In order to achieve the above object, an automatic sand removal apparatus according to the present invention is provided with a sand sloping passage having a slope at the bottom, in the middle of a water sluice for river water intake or the like. In the device for discharging the sand and the like accumulated on the gate from the gate provided on the wall side of the water channel, a plurality of pipes having different lengths are arranged in parallel along the inclination direction of the bottom of the sand channel, and When the condition is detected and sedimentation proceeds to a predetermined amount, or at regular time intervals, the discharge gate is opened by an amount slightly larger than the height of the end of the square pipe, and the sand accumulated in the sedimentation passage. It is configured to include a control device for controlling so as to discharge the above.
【０００５】[0005]
【作用】上記構成によれば、少量堆砂の状態で自動排砂
することによって排砂を短時間で行うことができ、完全
断水は必要としないので、断水作業の時間が減少し、人
手も少なくて済むようになる。発電所では発電効率を維
持することができ、浄水場では水の安定供給を保持でき
る。According to the above construction, the sand can be discharged in a short time by automatically discharging the sand in the state of a small amount of sedimentation, and complete water cutoff is not required. It will be less. Power plants can maintain power generation efficiency, and water purification plants can maintain a stable supply of water.
【０００６】[0006]
【実施例】以下、図面を参照して本発明をさらに詳しく
説明する。図１は本発明による自動排砂装置の実施例を
説明するため一部破断して示した斜視図である。図２は
図１の自動排砂装置を各方向から見た図および沈砂路底
面に並設される角パイプの構造を示す斜視図である。水
は、水路１の水槽側から鉄管側へ流れるようになってい
る。水路１の底面より一段低くして沈砂路２が設けら
れ、沈砂路２部分の水路１の壁８には排砂ゲ−ト１０が
設けられている。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail below with reference to the drawings. FIG. 1 is a partially cutaway perspective view for explaining an embodiment of an automatic sand removing device according to the present invention. FIG. 2 is a view of the automatic sand removal device of FIG. 1 seen from each direction and a perspective view showing the structure of square pipes provided in parallel on the bottom surface of the sand setting passage. Water flows from the water tank side of the water channel 1 to the iron pipe side. A sand setting channel 2 is provided one step lower than the bottom of the water channel 1, and a sand discharging gate 10 is provided on a wall 8 of the water channel 1 in the portion of the sand channel 2.
【０００７】図２（ｃ）から理解できるように水路１の
水槽側の底面１ａより鉄管側の底面１ｂの方が高くなっ
ており、水流に含まれている砂，小石等が鉄管側の側面
１ｃに当たって沈砂路２に溜まり易くなるようにしてあ
る。沈砂路２の底面は、排砂ゲ−ト１０側に向けて傾斜
しており、それぞれ長さの異なる５個の角パイプ３，
４，５，６および７が並設されている。なお、排砂位置
の均等化を計るために、その沈砂路の堆砂状況に応じて
各角パイプの長さを変えたり、角パイプの配列順を変え
たりする必要がある。角パイプ３，４，５，６および７
は図２（ｄ）に示す形状をしており、一端側は直角面に
対し約４５度の傾斜でカットされている。As can be understood from FIG. 2 (c), the bottom surface 1b on the iron pipe side is higher than the bottom surface 1a on the water tank side of the water channel 1, and sand, pebbles, etc. contained in the water flow are on the side surface on the iron pipe side. It is designed so that it easily hits 1c and accumulates in the sand setting path 2. The bottom surface of the sand settling path 2 is inclined toward the sand removal gate 10 side, and each of the five square pipes 3 having a different length.
4, 5, 6 and 7 are arranged side by side. In addition, in order to equalize the sand discharging positions, it is necessary to change the length of each square pipe or change the arrangement order of the square pipes according to the sedimentation condition of the settling channel. Square pipes 3, 4, 5, 6 and 7
Has a shape shown in FIG. 2D, and one end side thereof is cut at an inclination of about 45 degrees with respect to the right-angled surface.
【０００８】沈砂路２に堆積した砂，石等は、角パイプ
３，４，５，６および７の傾斜カット面３ａ，４ａ，５
ａ，６ａおよび７ａより入り、他端側に流れる。他端側
は通常は排砂ゲ−ト１０によって塞がれており、ゲ−ト
引上部材９によって排砂ゲ−ト１０が引き上げられる
と、角パイプ内および傾斜カット面付近に溜まった砂，
小石等が排出される。排砂ゲ−ト１０の引き上げる量
は、角パイプの高さの１．２倍程度であり、水圧により
角パイプ内および傾斜カット面付近に溜まった砂，小石
等は勿論、角パイプの他端側の上に溜まった砂，小石等
も水流とともに排出される。The sand, stones, etc. accumulated in the sand settling passage 2 are inclined cut surfaces 3a, 4a, 5 of the square pipes 3, 4, 5, 6 and 7.
It enters from a, 6a and 7a and flows to the other end side. The other end is normally closed by a sand removal gate 10. When the sand removal gate 10 is pulled up by the gate lifting member 9, the sand accumulated in the square pipe and near the inclined cut surface. ，
Pebbles are discharged. The amount of sand removal gate 10 to be pulled up is about 1.2 times the height of the square pipe, and not only sand and pebbles accumulated in the square pipe and near the inclined cut surface due to water pressure but also the other end of the square pipe. Sand and pebbles that have accumulated on the side are also discharged together with the water stream.
【０００９】図３は、本発明による自動排砂装置の電気
制御系の実施例を示すブロック図である。自動排砂制御
装置１１は、沈砂路における水位および堆積状態の情報
を得て排砂ゲ−トの開閉を制御するための制御中心部で
ある。沈砂路の水位は水位計１４で測定され、そのデ−
タは自動排砂制御装置１１に送られる。また、堆積検出
センサ１５が沈砂路の底面付近に設けられ、その信号は
堆砂検出装置１６に送られる。堆砂検出装置１６は、一
定の堆砂を検出すると、その検出情報を自動排砂制御装
置１１に送る。FIG. 3 is a block diagram showing an embodiment of an electric control system of the automatic sand removing device according to the present invention. The automatic sand unloading control device 11 is a control central part for controlling the opening and closing of the sand unloading gate by obtaining information on the water level and the accumulation state in the sand unloading channel. The water level in the sand basin is measured by the water level gauge 14, and the
Data is sent to the automatic sand removal control device 11. In addition, a sedimentation detection sensor 15 is provided near the bottom of the sand settling path, and its signal is sent to the sedimentation detection device 16. When detecting a certain amount of sediment, the sediment detecting device 16 sends the detection information to the automatic sand removal control device 11.
【００１０】堆積検出センサ１５は、例えばサ−ミスタ
が堆砂しない部分と堆砂する部分とにそれぞれ設けられ
ており、これらサ−ミスタに堆砂検出装置１６からヒ−
タ電流を流し、堆砂する部分に設けられたサ−ミスタの
抵抗値の変化による電圧と堆砂しない部分に設けられた
参照用サ−ミスタによる電圧とを比較することにより堆
積状態を検出するようになっている。堆積が進むと水の
流れが悪くなり、その結果、堆砂する部分のサ−ミスタ
の温度が上昇して抵抗値が変動し、堆積状態を検出でき
る。機側盤１２は、自動排砂制御装置１１の排砂ゲ−ト
開閉指示に基づき巻上機１３に対し電流を供給する動力
を開閉して巻上機１３を駆動する。巻上機１３はゲ−ト
引上部材９を引き上げ排出ゲ−ト１０を開閉する。The deposition detection sensors 15 are provided, for example, at a portion where the thermistor does not deposit and a portion where the thermistor deposits, respectively.
The deposition state is detected by applying a sampling current and comparing the voltage due to the change in the resistance value of the thermistor provided in the sedimentation part with the voltage from the reference thermistor provided in the non-sedimentation part. It is like this. As the accumulation progresses, the flow of water deteriorates, and as a result, the temperature of the thermistor in the sedimentation portion rises and the resistance value fluctuates, and the accumulation state can be detected. The machine side panel 12 drives the hoisting machine 13 by opening and closing the power for supplying a current to the hoisting machine 13 based on the sand unloading gate opening / closing instruction of the automatic sand unloading control device 11. The hoisting machine 13 pulls up the gate lifting member 9 to open and close the discharge gate 10.
【００１１】図４は、排砂ゲ−トを開く動作を説明する
ためのタイミングチャ−トである。図４（ａ）は多量の
堆砂の場合、角パイプによる排出は低下してしまうの
で、少量堆積したときに、適時にゲ−トを小開きにする
ように電気制御をするようにしたものである。堆砂検出
センサ１５からの信号により堆砂検出装置１６が堆砂を
検出したとき、自動排砂制御装置１１は機側盤１２に排
砂ゲ−ト１０を開くように指示を送る。機側盤１２は巻
上機１３を駆動して排砂ゲ−ト１０を角パイプの高さよ
り約１．２倍の高さまで引き上げ、これにより水流とと
もに角パイプの傾斜カット面付近に溜まった砂，小石等
および角パイプの他端側の上に溜まった砂，小石等が排
出される。FIG. 4 is a timing chart for explaining the operation of opening the sand discharging gate. Fig. 4 (a) shows that when a large amount of sand is deposited, the discharge from the square pipe is reduced. Therefore, when a small amount is deposited, electrical control is performed so as to open the gate in a small timely manner. Is. When the sediment detecting device 16 detects the sediment by the signal from the sediment detecting sensor 15, the automatic sand removal control device 11 sends an instruction to the machine side board 12 to open the sand discharging gate 10. The machine side board 12 drives the hoisting machine 13 to raise the sand removal gate 10 to a height about 1.2 times higher than the height of the square pipe, whereby the sand accumulated near the inclined cut surface of the square pipe along with the water flow. , Pebbles, etc., and sand, pebbles, etc. accumulated on the other end of the square pipe are discharged.
【００１２】自動排砂制御装置１１は水位計１４からの
水位のデ−タを監視しており、水位がＤ2 の深さになる
と、機側盤１２に排砂ゲ−ト１０を閉じるように指示を
送る。水位Ｄ2 は、発電所で発電を停止しないため等の
必要最少限の深さである。依然として堆砂検出状態にあ
り、この状態で水位がＤ1 まで回復すると、再度自動排
砂制御装置１１は機側盤１２に排砂ゲ−ト１０を開くよ
うに指示を送る。そして排砂ゲ−ト１０が開いている間
に、堆砂が無くなったことを堆砂検出センサ１５からの
信号により検出すると、自動排砂制御装置１１は排砂作
業を終了したものとして排砂ゲ−ト１０を閉じるよう指
示を送る。The automatic sand removal controller 11 monitors the water level data from the water level gauge 14, and when the water level reaches the depth of D 2 , the sand removal gate 10 is closed on the machine side board 12. Send instructions to. The water level D 2 is a minimum depth necessary for not stopping power generation at the power plant. It is still in the sedimentation detection state, and when the water level is restored to D 1 in this state, the automatic sand removal control device 11 again sends an instruction to the machine side panel 12 to open the sand removal gate 10. When the sand removal sensor 10 detects that the sand has been exhausted while the sand removal gate 10 is open, the automatic sand removal control device 11 determines that the sand removal operation has been completed. Send an instruction to close the gate 10.
【００１３】図４（ｂ）は、堆砂を検出するのではな
く、一定の時間経過すると所定の堆砂があるものとして
水位がＤ2 以下にならないような一定の時間だけ排砂ゲ
−トを開き、この動作を繰り返し行うようにしたもので
ある。自動排砂制御装置１１は一定時間経過すると、排
砂ゲ−ト１０を図４（ａ）の場合と同じ高さだけ開ける
ように指示を送る。ｔ時間排砂ゲ−ト１０を開いた後閉
じる。つぎに一定時間経過すると同様にｔ時間排砂ゲ−
ト１０を開く。この動作を繰り返すことにより、沈砂路
２に堆砂を生じさせることなく排砂ができる。以上の図
４（ａ）と（ｂ）の排砂制御はそれぞれ単独に用いても
よいし併用してもよい。FIG. 4 (b) shows that the sedimentation gate is not detected, but the sand removal gate is kept for a certain period of time so that the water level does not become D 2 or less assuming that there is a certain sedimentation after a certain period of time. Is opened and this operation is repeated. The automatic sand removal control device 11 sends an instruction to open the sand removal gate 10 at the same height as in the case of FIG. After opening the sand discharging gate 10 for t hours, it is closed. Next, when a certain time has elapsed, the sand removal gate is similarly discharged for t hours.
Open G10. By repeating this operation, sand can be discharged without causing sedimentation in the sand setting passage 2. The sand discharge control shown in FIGS. 4A and 4B may be used alone or in combination.
【００１４】[0014]
【発明の効果】以上、説明したように本発明による装置
は、少量堆砂の状態で自動的に沈砂路に溜まった砂，小
石等を排出することができる。したがって、発電所や浄
水場への給水を絶つことなく砂，小石を除くことがで
き、排砂のための作業時間を短縮できるとともに人手も
ほとんど掛けなくて済むようになった。As described above, the apparatus according to the present invention can automatically discharge the sand, pebbles, etc. accumulated in the sand setting passage in the state of a small amount of sand. Therefore, sand and pebbles can be removed without stopping the water supply to the power plant or the water purification plant, and the work time for sand removal can be shortened and almost no manpower is required.
【図１】本発明による自動排砂装置の実施例を示す一部
破断して示した斜視図である。FIG. 1 is a partially cutaway perspective view showing an embodiment of an automatic sand removing device according to the present invention.
【図２】図１の自動排砂装置を説明するための図で、
（ａ）は沈砂路の縦断面図，（ｂ）は沈砂路の平面図，
（ｃ）は横断面図および（ｄ）は角パイプの斜視図であ
る。FIG. 2 is a view for explaining the automatic sand removal device of FIG.
(A) is a vertical cross-sectional view of the sand setting path, (b) is a plan view of the sand setting path,
(C) is a cross-sectional view and (d) is a perspective view of a square pipe.
【図３】本発明による自動排砂装置の電気制御系の実施
例を示すブロック図である。FIG. 3 is a block diagram showing an embodiment of an electric control system of the automatic sand removing device according to the present invention.
【図４】排砂ゲ−トを開く動作を説明するためのタイミ
ングチャ−トである。FIG. 4 is a timing chart for explaining the operation of opening the sand discharging gate.
１…水路 ２…沈砂路 ３，４，５，６，７…角パイプ ８…壁 ９…ゲ−ト引上部材 １０…排砂ゲ−ト １１…自動排砂制御装置 １２…機側盤 １３…巻上機 １４…水位計 １５…堆砂検出センサ １６…堆砂検出装置 DESCRIPTION OF SYMBOLS 1 ... Channel 2 ... Settling channel 3, 4, 5, 6, 7 ... Square pipe 8 ... Wall 9 ... Gate raising member 10 ... Sand removal gate 11 ... Automatic sand removal control device 12 ... Machine side panel 13 … Hoisting machine 14… Water level gauge 15… Sediment detection sensor 16… Sediment detection device
Claims (2)
に傾斜を持たせた沈砂路を設け、沈砂路に堆積した砂等
を水路の壁側に設けたゲ−トから排出する装置におい
て、 前記沈砂路の底面の傾斜方向に沿って複数本のそれぞれ
長さの異なるパイプを並設し、 堆砂の状態を検出して所定の量に堆砂が進んだとき、ま
たは一定の時間毎に前記排出ゲ−トを前記パイプの端部
の高さより僅かに大きい量だけ開いて沈砂路に堆積した
砂等を排出するように制御する制御装置を備えたことを
特徴とする自動排砂装置。1. An apparatus for providing a sand sloping path having an inclined bottom in the middle of a waterway for river water intake and the like, and discharging the sand and the like accumulated in the sand spilling path from a gate provided on the wall side of the waterway. In, a plurality of pipes of different lengths are installed side by side along the inclination direction of the bottom of the sand setting passage, and when the sedimentation state is detected and the sedimentation proceeds to a predetermined amount, or for a certain period of time. An automatic sand removal function, characterized in that a control device is provided for each time to open the discharge gate by an amount slightly larger than the height of the end of the pipe to discharge the sand and the like accumulated in the sand setting passage. apparatus.
の角度で形成されていることを特徴とする請求項１記載
の自動排砂装置。2. The automatic sand remover according to claim 1, wherein one end of the pipe is formed at a constant angle with respect to a right-angled surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33906993A JPH07158038A (en) | 1993-12-03 | 1993-12-03 | Automatic sand discharging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33906993A JPH07158038A (en) | 1993-12-03 | 1993-12-03 | Automatic sand discharging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07158038A true JPH07158038A (en) | 1995-06-20 |
Family
ID=18323969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33906993A Pending JPH07158038A (en) | 1993-12-03 | 1993-12-03 | Automatic sand discharging device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07158038A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005200986A (en) * | 2004-01-19 | 2005-07-28 | Akio Iida | Trash collector of irrigation channel |
| JP2006200132A (en) * | 2005-01-18 | 2006-08-03 | Penta Ocean Constr Co Ltd | Dredging device |
| JP2008308838A (en) * | 2007-06-12 | 2008-12-25 | Chugoku Electric Power Co Inc:The | Scouring gate |
-
1993
- 1993-12-03 JP JP33906993A patent/JPH07158038A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005200986A (en) * | 2004-01-19 | 2005-07-28 | Akio Iida | Trash collector of irrigation channel |
| JP2006200132A (en) * | 2005-01-18 | 2006-08-03 | Penta Ocean Constr Co Ltd | Dredging device |
| JP2008308838A (en) * | 2007-06-12 | 2008-12-25 | Chugoku Electric Power Co Inc:The | Scouring gate |
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