JPH09137800A - Siphon - Google Patents

Siphon

Info

Publication number
JPH09137800A
JPH09137800A JP31847995A JP31847995A JPH09137800A JP H09137800 A JPH09137800 A JP H09137800A JP 31847995 A JP31847995 A JP 31847995A JP 31847995 A JP31847995 A JP 31847995A JP H09137800 A JPH09137800 A JP H09137800A
Authority
JP
Japan
Prior art keywords
siphon
air
inner top
top part
flow passage
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.)
Withdrawn
Application number
JP31847995A
Other languages
Japanese (ja)
Inventor
Sakuichirou Uehara
作一郎 上原
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP31847995A priority Critical patent/JPH09137800A/en
Publication of JPH09137800A publication Critical patent/JPH09137800A/en
Withdrawn legal-status Critical Current

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  • Jet Pumps And Other Pumps (AREA)

Abstract

PROBLEM TO BE SOLVED: To drain rainwater in an emergency that rainwater is increased rapidly by forming a siphon at a short time by arranging a variable means for changing the flow passage cross sectional surface of a siphon inner top part. SOLUTION: The flow passage cross sectional surface shape of the inner top part of a siphon 1 is formed in a rectangle shape, and the bottom end of a flap 4 is rotatably installed on a shaft 12 which extends horizontally along the bottom rim the siphon 1 inner top part. When a sensor 5 is detected air 2 which stagnates in the siphon 1 inner top part, hydraulic pressure from a pressure oil source 15 is supplied to a hydraulic cylinder 3 by a controller 6 to extend a piston. The slap 4 is rotated around a shaft 12, and the flow passage cross sectional area of the siphon 1 inner top part is shortened. As a result, air 2 which is supplied together with a fluid is increased since the speed of the fluid which flows in the siphon pipe 1 inner top part is increased, the volume of air 2 is contracted rapidly, and the siphon 1 is formed rapidly. When the siphon 1 is formed, the hydraulic cylinder 3 is contracted by signals of the sensor 5, and the flap 4 is returned originally.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は排水ポンプ等のポン
プの吐出管に接続して用いられるサイフォン管に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a siphon pipe connected to a discharge pipe of a pump such as a drainage pump.

【0002】[0002]

【従来の技術】排水ポンプ場の1例が図2に示されてい
る。モータ10によって排水ポンプ7を駆動すると、下池
8に流入した雨水は排水ポンプ7によって吸い上げら
れ、その吐出管11及びこれに接続されたサイフォン管1
を通って上池9に揚水される。
2. Description of the Related Art An example of a drainage pump station is shown in FIG. When the drainage pump 7 is driven by the motor 10, the rainwater flowing into the lower pond 8 is sucked up by the drainage pump 7, and its discharge pipe 11 and the siphon pipe 1 connected thereto.
The water is pumped to the upper pond 9 through.

【0003】排水ポンプ7の停止時、サイフォン管1内
に空気が充満しているが、排水ポンプの運転を開始する
と、図3に示すように、サイフォン管1内頂部に滞留す
る空気2はサイフォン管1内頂部を越流した水に連行さ
れて徐々に減少し、この空気2が無くなったときサイフ
ォンが形成される。
When the drain pump 7 is stopped, the siphon pipe 1 is filled with air. However, when the drain pump is started, the air 2 accumulated at the top of the siphon pipe 1 is siphoned as shown in FIG. It is entrained by the water flowing over the top of the pipe 1 and gradually decreases, and when this air 2 disappears, a siphon is formed.

【0004】[0004]

【発明が解決しようとする課題】上記従来のサイフォン
管1おいては、排水ポンプ7の運転開始時、サイフォン
管1内を流れる水の流速が遅いため、空気2が水に連行
され難く、従って、サイフォンの形成に多大の時間を要
する。
In the conventional siphon pipe 1 described above, since the flow velocity of the water flowing through the siphon pipe 1 is low at the start of the operation of the drainage pump 7, it is difficult for the air 2 to be entrained in the water. It takes a lot of time to form a siphon.

【0005】そして、サイフォンが形成されるまで、排
水ポンプ7の吐出抵抗が大きく、排水ポンプ7の吐出量
は設計水量の50%程度に低下するので、急激な雨水流入
に対応することができないという問題があった。
Until the siphon is formed, the discharge resistance of the drainage pump 7 is large, and the discharge amount of the drainage pump 7 is reduced to about 50% of the design water amount, so that it cannot cope with a sudden inflow of rainwater. There was a problem.

【0006】[0006]

【課題を解決するための手段】本発明は上記課題を解決
するために発明されたものであって、その要旨とすると
ころは、ポンプの吐出管に接続されたサイフォン管にお
いて、該サイフォン管内頂部の流路断面積を変化させる
可変手段を設けたことを特徴とするサイフォン管にあ
る。
DISCLOSURE OF THE INVENTION The present invention has been invented to solve the above problems, and its gist is to provide a siphon pipe connected to a discharge pipe of a pump. The siphon tube is characterized in that variable means for changing the cross-sectional area of the channel is provided.

【0007】他の特徴とするところは、上記サイフォン
管内頂部の流路断面形状を長方形とし、この流路断面の
下辺に沿って水平に伸びる軸まわりに回動するフラップ
によって上記可変手段を構成したことにある。
Another feature is that the flow path cross-section of the top of the inside of the siphon tube is rectangular, and the variable means is constituted by a flap that rotates around an axis extending horizontally along the lower side of the flow path cross section. Especially.

【0008】更に他の特徴とするところは、上記サイフ
ォン管内頂部の空気の有無を検知するセンサと、このセ
ンサからの信号を受けて上記可変手段を駆動することに
より上記センサが空気を検知したとき流路断面積を小と
し、上記センサが空気を検知しないとき流路断面積を大
とする駆動装置を設けたにある。
Still another feature is that a sensor for detecting the presence or absence of air at the top of the inside of the siphon tube, and a signal from the sensor for driving the variable means to detect the air by the sensor. There is provided a driving device which makes the flow passage cross-sectional area small and makes the flow passage cross-sectional area large when the sensor does not detect air.

【0009】しかして、ポンプの運転開始時等サイフォ
ン管内頂部に空気がある場合には可変手段によって管内
頂部の流路断面積を小さくすると、管内頂部を流れる流
体の流速が増大し、この流体に連行される空気量が増加
するので、短時間でサイフォンが形成される。
However, when air is present at the top of the siphon pipe at the start of operation of the pump, if the flow passage cross-sectional area at the top of the pipe is reduced by the variable means, the flow velocity of the fluid flowing at the top of the pipe increases, and A siphon is formed in a short time because the amount of air taken is increased.

【0010】サイフォンが形成されることによって管内
頂部に空気がなくなれば可変手段により管内頂部の流路
断面積を増大させることにより吐出管路抵抗を低減す
る。
When air is removed from the top of the pipe by forming the siphon, the resistance of the discharge pipe is reduced by increasing the flow passage cross-sectional area of the top of the pipe by the variable means.

【0011】[0011]

【発明の実施の形態】本発明の実施形態が図1に示さ
れ、(A) は要部の部分的縦断面図、(B) は(A)のB−B
線に沿う部分的断面図である。
BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention is shown in FIG. 1, in which (A) is a partial vertical cross-sectional view of a main part, and (B) is BB of (A).
It is a fragmentary sectional view which follows a line.

【0012】サイフォン管1内頂部の流路断面形状は図
1(B) に示されるように長方形とされ、その下辺に沿っ
て水平に伸びる軸12まわりに回動可能にフラップ4の下
端が取り付けられている。
As shown in FIG. 1 (B), the cross-sectional shape of the flow path at the top of the inside of the siphon tube 1 is rectangular, and the lower end of the flap 4 is rotatably mounted around a shaft 12 extending horizontally along the lower side thereof. Has been.

【0013】このフラップ4は図示のように上に凸に円
滑に弯曲せしめられ、その背面は管内頂部下面に添接す
るようになっている。そして、このフラップ4の背面に
は油圧シリンダ3のピストンの先端がピン13を介して枢
着されている。
As shown in the figure, the flap 4 is smoothly curved so as to be convex upward, and its rear surface is in contact with the lower surface of the inner top of the pipe. The tip of the piston of the hydraulic cylinder 3 is pivotally attached to the back surface of the flap 4 via a pin 13.

【0014】サイフォン管1内頂部に滞留する空気2の
有無を検知するセンサ5が設けられ、このセンサ5の信
号はコントローラ6に出力される。
A sensor 5 for detecting the presence or absence of the air 2 staying at the top of the siphon tube 1 is provided, and the signal of this sensor 5 is output to the controller 6.

【0015】しかして、センサ5が空気2の存在を検知
したとき、コントローラ6は圧油源15からの圧油を油圧
シリンダ3に供給してこれを伸長せしめる。これによっ
てフラップ4は軸12まわりに回動して図示の位置を占
め、サイフォン管1内頂部の流路断面積を縮小する。こ
の結果、サイフォン管1内頂部を流過する流体の流速が
増速するので、この流体に連行される空気2の量が増大
し、これによって空気2の容積が急速に縮小してサイフ
ォンが迅速に形成される。
When the sensor 5 detects the presence of the air 2, the controller 6 supplies the pressure oil from the pressure oil source 15 to the hydraulic cylinder 3 to extend it. As a result, the flap 4 rotates about the shaft 12 to occupy the position shown in the figure, and reduces the flow passage cross-sectional area of the inner top of the siphon tube 1. As a result, the flow velocity of the fluid flowing through the top of the siphon pipe 1 is increased, so that the amount of the air 2 entrained in the fluid is increased, whereby the volume of the air 2 is rapidly reduced and the siphon is swiftly moved. Is formed.

【0016】サイフォンが形成されると、これを検知し
たセンサ5からの信号によって油圧シリンダ3が短縮
し、これによって、フラップ4はその背面がサイフォン
管1内頂部下面に添接しサイフォン管1内頂部の流路断
面積を拡大するので、サイフォン管1を流過する流体の
流路抵抗を低減する。
When the siphon is formed, the hydraulic cylinder 3 is shortened by the signal from the sensor 5 which detects the siphon, whereby the back surface of the flap 4 contacts the lower surface of the inner top of the siphon tube 1 and the inner top of the siphon tube 1 is abutted. Since the cross-sectional area of the channel is expanded, the channel resistance of the fluid flowing through the siphon pipe 1 is reduced.

【0017】[0017]

【発明の効果】本発明においては、ポンプの運転開始時
等サイフォン管内頂部に空気がある場合には可変手段に
よって管内頂部の流路断面積を小さくすると、管内頂部
を流れる流体の流速が増大し、この流体に連行される空
気量が増加するので、短時間でサイフォンを形成するこ
とができる。この結果、ポンプの起動時迅速にポンプか
らその設計水量を吐出できるので、雨水の急増時におい
ても緊急排水が可能となる。
According to the present invention, when air is present at the top of the siphon pipe at the start of operation of the pump, the flow velocity of the fluid flowing through the top of the pipe is increased by reducing the flow passage cross-sectional area of the top of the pipe by the variable means. Since the amount of air entrained in this fluid increases, the siphon can be formed in a short time. As a result, the designed amount of water can be quickly discharged from the pump when the pump is started, so that emergency drainage can be performed even when the rainwater rapidly increases.

【0018】サイフォンが形成されることによって管内
頂部に空気がなくなれば、可変手段により流路断面積を
増大させることにより吐出管路抵抗を低減することがで
きる。
When air is removed from the top of the pipe by forming the siphon, the discharge pipe line resistance can be reduced by increasing the flow passage cross-sectional area by the variable means.

【0019】サイフォン管内頂部の流路断面形状を長方
形とし、この流路断面の下辺に沿って水平に伸びる軸ま
わりに回動するフラップによって上記可変手段を構成す
れば、フラップを立ち上げることによってサイフォン管
内頂部を流過する流体の速度を円滑に増速できるととも
に管内頂部の空気を効果的に連行することができる。
If the channel cross-sectional shape of the top of the siphon tube is rectangular and the variable means is constituted by a flap that rotates around an axis extending horizontally along the lower side of the channel cross-section, the siphon is raised by raising the flap. The velocity of the fluid flowing through the top of the pipe can be smoothly increased, and the air at the top of the pipe can be effectively entrained.

【0020】サイフォン管内頂部の空気の有無を検知す
るセンサと、このセンサからの信号を受けて上記可変手
段を駆動することにより上記センサが空気を検知したと
き流路断面積を小とし、上記センサが空気を検知しない
とき流路断面積を大とする駆動装置を設れば、サイフォ
ン管内頂部の空気の有無に応じて可変手段により管内頂
部の流路断面積を自動的に変化させることが可能とな
る。
A sensor for detecting the presence / absence of air at the top of the siphon tube, and a signal from the sensor to drive the variable means to reduce the flow passage cross-sectional area when the sensor detects air. If a drive device is installed that increases the flow passage cross-sectional area when no air is detected, it is possible to automatically change the flow passage cross-sectional area at the top of the siphon pipe by varying means depending on the presence of air at the top of the pipe. Becomes

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明の実施形態を示し(A) は要部の部分的縦
断面図、(B) は(A) のB−B線に沿う部分的断面図であ
る。
1A and 1B show an embodiment of the present invention, and FIG. 1A is a partial vertical cross-sectional view of a main part, and FIG. 1B is a partial cross-sectional view taken along the line BB of FIG.

【図2】排水ポンプ場の略示的配置図である。FIG. 2 is a schematic layout view of a drainage pump station.

【図3】従来のサイフォン管の部分的断面図である。FIG. 3 is a partial cross-sectional view of a conventional siphon tube.

【符号の説明】[Explanation of symbols]

1 サイフォン管 2 空気 3 駆動装置 4 可変手段 5 センサ 6 コントローラ 1 Siphon tube 2 Air 3 Driving device 4 Variable means 5 Sensor 6 Controller

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 ポンプの吐出管に接続されたサイフォン
管において、 該サイフォン管内頂部の流路断面積を変化させる可変手
段を設けたことを特徴とするサイフォン管。
1. A siphon pipe connected to a discharge pipe of a pump, wherein a variable means for changing a flow passage cross-sectional area of an inner top portion of the siphon pipe is provided.
【請求項2】 上記サイフォン管内頂部の流路断面形状
を長方形とし、この流路断面の下辺に沿って水平に伸び
る軸まわりに回動するフラップによって上記可変手段を
構成したことを特徴とする請求項1記載のサイフォン
管。
2. The variable means is characterized in that the flow path cross-section of the top of the inside of said siphon tube is rectangular, and a flap which rotates around an axis extending horizontally along the lower side of this flow path cross section is constituted. The siphon tube according to item 1.
【請求項3】 上記サイフォン管内頂部の空気の有無を
検知するセンサと、このセンサからの信号を受けて上記
可変手段を駆動することにより上記センサが空気を検知
したとき流路断面積を小とし、上記センサが空気を検知
しないとき流路断面積を大とする駆動装置を設けたこと
を特徴とする請求項1又は2記載のサイフォン管。
3. A sensor for detecting the presence / absence of air at the top of the inside of said siphon tube, and a variable channel means for receiving the signal from this sensor to drive said variable means to reduce the flow passage cross-sectional area when the sensor detects air. The siphon tube according to claim 1 or 2, further comprising a driving device that increases a flow passage cross-sectional area when the sensor does not detect air.
JP31847995A 1995-11-14 1995-11-14 Siphon Withdrawn JPH09137800A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP31847995A JPH09137800A (en) 1995-11-14 1995-11-14 Siphon

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP31847995A JPH09137800A (en) 1995-11-14 1995-11-14 Siphon

Publications (1)

Publication Number Publication Date
JPH09137800A true JPH09137800A (en) 1997-05-27

Family

ID=18099578

Family Applications (1)

Application Number Title Priority Date Filing Date
JP31847995A Withdrawn JPH09137800A (en) 1995-11-14 1995-11-14 Siphon

Country Status (1)

Country Link
JP (1) JPH09137800A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113530892A (en) * 2021-06-07 2021-10-22 新疆河润尚源科技有限公司 Siphon group and water purification equipment who constitutes thereof
NO20220015A1 (en) * 2021-01-05 2022-07-06 Vaagland Baatbyggeri As A gaslift pump, a method, and a system for use in fluid lifting operations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO20220015A1 (en) * 2021-01-05 2022-07-06 Vaagland Baatbyggeri As A gaslift pump, a method, and a system for use in fluid lifting operations
CN113530892A (en) * 2021-06-07 2021-10-22 新疆河润尚源科技有限公司 Siphon group and water purification equipment who constitutes thereof

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Free format text: JAPANESE INTERMEDIATE CODE: A300

Effective date: 20030204