JPS60250215A - Level measuring device of water discharge pipe - Google Patents
Level measuring device of water discharge pipeInfo
- Publication number
- JPS60250215A JPS60250215A JP10732884A JP10732884A JPS60250215A JP S60250215 A JPS60250215 A JP S60250215A JP 10732884 A JP10732884 A JP 10732884A JP 10732884 A JP10732884 A JP 10732884A JP S60250215 A JPS60250215 A JP S60250215A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- compressed air
- drain pipe
- water discharge
- discharge pipe
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
- G01F23/16—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid
- G01F23/165—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid of bubbler type
- G01F23/168—Indicating, recording, or alarm devices being actuated by mechanical or fluid means, e.g. using gas, mercury, or a diaphragm as transmitting element, or by a column of liquid of bubbler type with electric indicating or recording
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Sewage (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】 （発明の技術分野） 本発明は、排水管内の水位を測定する装置に関する。[Detailed description of the invention] (Technical field of invention) The present invention relates to a device for measuring the water level in a drain pipe.
（従来技術）
排水管内の排水の流れ状態を測定する方法として、従来
種々の方法が開発されているが、実用に適したものはな
い。以下、従来方法の代表例について説明する。(Prior Art) Various methods have been developed to measure the flow state of waste water in a drain pipe, but none are suitable for practical use. Representative examples of conventional methods will be described below.
排水管の上部から電極棒を差し込み、電極の先端に水が
接触した時通電状態となることを利用して、水位を測定
する方法がある。しかし、この方法では電極棒が排水管
内にあるため、排水管内を流れる汚物が引っ掛かり流通
の支障となる。There is a method of measuring the water level by inserting an electrode rod from the top of the drain pipe and using the fact that it becomes energized when the tip of the electrode comes into contact with water. However, in this method, since the electrode rod is located inside the drain pipe, the waste flowing inside the drain pipe gets caught and becomes a hindrance to the flow.
また、排水管内にラジオアイソトープを排水と一緒に流
し、この流入位置から所定距離離れた２箇所に放射線測
定器を置ぎ、これら測定器で検出された放射能のピーク
の時間差から排水の流速を検出する方法がある。しかし
、我国ではラジオアイソトープの使用については厳しく
規制されているため、この方法も実用化は不可能である
。In addition, a radioisotope is poured into the drain pipe along with the waste water, and radiation measuring instruments are placed at two locations a predetermined distance from the inflow position, and the flow velocity of the waste water is determined from the time difference between the peaks of radioactivity detected by these measuring instruments. There is a way to detect it. However, in our country, the use of radioisotopes is strictly regulated, so this method cannot be put to practical use.
また、電磁流量計により測定する方法がある。There is also a method of measuring with an electromagnetic flowmeter.
すなわち、排水の流速を磁気誘導を利用して検出するも
のである。しかし、この方法では排水管が満水状態であ
ることを条件として正確に測定で外るが、排水管は通常
満水状態にないから、正確な測定が不可能である。That is, the flow velocity of wastewater is detected using magnetic induction. However, this method provides accurate measurements on the condition that the drain pipe is full of water, but since the drain pipe is usually not full of water, accurate measurements are not possible.
（上記技術については、例えば雑誌［空気調和。(For the above technology, see the magazine [Air Conditioning], for example.
衛生工学」第５３巻第２号（昭和５４年２月号）第６７
〜６８ページ参照。）
（発明の目的）
本発明は上記事情に基づきなされたもので、その目的は
、排水管の水位を常に正確に測定で外、しかも排水管内
の流通を阻害しない排水管の水位測定装置を提供するこ
とにある。Sanitary Engineering, Volume 53, No. 2 (February 1978), No. 67
~See page 68. (Objective of the Invention) The present invention has been made based on the above circumstances, and its purpose is to provide a water level measuring device for a drain pipe that can always accurately measure the water level in the drain pipe and does not obstruct the flow within the drain pipe. It's about doing.
（発明の要旨）
本発明の要旨は、排水管の底部に形成された小孔と、排
水管外に設置された圧縮空気供給機と、圧縮空気供給機
がらの圧縮空気を排水管の小孔に送る空気流通路と、空
気流通路における圧縮空気の背圧を検出する圧力検出器
とを備えたことを特徴とする排水管内の水位測定装置に
ある。(Summary of the Invention) The gist of the present invention is to provide a small hole formed at the bottom of a drain pipe, a compressed air supply machine installed outside the drain pipe, and a compressed air supply machine to supply compressed air to the small hole in the drain pipe. The present invention provides a water level measuring device in a drain pipe, characterized by comprising an air flow path for sending air to the drain pipe, and a pressure detector for detecting the back pressure of compressed air in the air flow path.
（発明の構成）
以下、本発明の一実施例を第１図、第２図を参照して説
明する。図中１は通常の排水管であり、これら排水管１
の開には継手として機能する短い排水管２が接続されて
いる。これら排水管１，２は地中に埋設されている。こ
の排水管２の底部には、小孔３が複数形成されている。(Structure of the Invention) An embodiment of the present invention will be described below with reference to FIGS. 1 and 2. 1 in the figure is a normal drain pipe, and these drain pipes 1
A short drain pipe 2, which functions as a joint, is connected to the opening. These drain pipes 1 and 2 are buried underground. A plurality of small holes 3 are formed at the bottom of the drain pipe 2.
小孔３は排水管２の軸方向に沿って配列されている。排
水管２の外周には環状のカバー４が取り付けられている
。The small holes 3 are arranged along the axial direction of the drain pipe 2. An annular cover 4 is attached to the outer periphery of the drain pipe 2.
このカバー４は、断面が偏平な口字形をなし、その両端
が排水管２の外周面に気密に固定されている。カバー４
と排水管２どの間には環状の間隙５か形成されている。The cover 4 has a flat cross-section, and both ends thereof are airtightly fixed to the outer peripheral surface of the drain pipe 2. cover 4
An annular gap 5 is formed between the drain pipe 2 and the drain pipe 2.
」二部小孔３はこのカバー４によって覆われており、間
隙５に連通している。カバー４の」二部にはホース６の
一端が接続されている。The two-part small hole 3 is covered by this cover 4 and communicates with the gap 5. One end of a hose 6 is connected to the second part of the cover 4.
一方、地上には圧縮空気供給機としてのエアーポンプ１
０が設置されている。エアーポンプ１０には中継管１１
が接続されている。中継管１１には上記ホース６の他端
が接続されている。中継管１１、ホース６、環状の間隙
５によって、空気流通路が構成されている。On the other hand, there is an air pump 1 on the ground as a compressed air supply machine.
0 is set. The air pump 10 has a relay pipe 11
is connected. The other end of the hose 6 is connected to the relay pipe 11 . The relay pipe 11, the hose 6, and the annular gap 5 constitute an air flow path.
中継管１１１こは検出用管１２を介して圧力検出器１３
が接続されている。圧力検出器１３では、空気圧を電圧
に変換するようになっている。圧力検出器１３からの情
報はペンレコーダー１４に送出されるとともに、デジタ
イザー１５に送出され、デジタイザー１５からの情報は
マイクロコンビュ３−
一タ１６に送出されるようになっている。The pressure detector 13 is connected to the relay pipe 111 via the detection pipe 12.
is connected. The pressure detector 13 converts air pressure into voltage. Information from the pressure detector 13 is sent to a pen recorder 14 and also to a digitizer 15, and information from the digitizer 15 is sent to a microcomputer 3-interface 16.
」二部の装置は、多数の排水管１によって構成された長
距離の排水系に、多数設置されており、各マイクロコン
ピュータ−１６からの情報が１台の大型コンピューター
１７に送られるようになっている。大形コンピューター
１７には、表示や記録を行なう出力装置１８が接続され
ている。A large number of these devices are installed in a long-distance drainage system made up of a large number of drainage pipes 1, and information from each microcomputer 16 is sent to one large computer 17. ing. An output device 18 for displaying and recording is connected to the large computer 17.
次に作用を説明する。エアーポンプ１０の駆動により、
圧縮空気を中継管１１．ホース６を介して間隙５の」二
部に送り込む。圧縮空気は間隙５を回って、排水管２の
底部に形成された小孔３から排水管２内に噴き出す。排
水管２内を流れる排水の水位が高い場合には、圧縮空気
が高圧状態になって噴き出し、水位が低い場合には圧縮
空気は低圧で噴き出す。したがって、中継管１１やホー
ス６内の圧力（背圧）は、上記排水管２内の水位に比例
して変化する。Next, the effect will be explained. By driving the air pump 10,
Transfer compressed air to relay pipe 11. It is fed into the second part of the gap 5 via the hose 6. The compressed air goes around the gap 5 and blows out into the drain pipe 2 through a small hole 3 formed at the bottom of the drain pipe 2. When the water level of the wastewater flowing through the drain pipe 2 is high, compressed air is blown out at high pressure, and when the water level is low, the compressed air is blown out at low pressure. Therefore, the pressure (back pressure) inside the relay pipe 11 and the hose 6 changes in proportion to the water level inside the drain pipe 2.
上記の背圧は、中継管１１に接続された検出用管１２を
介して圧力検出器１３によって検出される。圧力検出器
１３では、背圧が電圧に変換され４−
る。このアナログ情報はペンレコーダー１４によって連
続記録される。また、上記背圧情報は、デジタイザー１
５によりデジタル化されてマイクロコンピュータ−１６
に送られ、さらにマイクロコンピュータ−１６から大形
コンピューター１７に送られる。大形コンピューター１
７では、各場所での背圧情報が演算処理される。出力装
置１８では、この演算結果が図や表等で表示されたり記
録される。The above-mentioned back pressure is detected by the pressure detector 13 via the detection pipe 12 connected to the relay pipe 11. In the pressure detector 13, the back pressure is converted into voltage. This analog information is continuously recorded by the pen recorder 14. In addition, the above back pressure information is
Digitized by Microcomputer-16
and further sent from the microcomputer 16 to the large computer 17. Large computer 1
In step 7, back pressure information at each location is processed. The output device 18 displays or records the results of this calculation in the form of diagrams, tables, etc.
第３図は本発明の他の実施例を示す。排水管２０の上に
、支持台２１を介してエアーポンプ２２が設置されてい
る。エアーポンプ２２には排水管２０の軸方向に沿って
延びる中継管２３が接続されており、中継管２３には複
数の半円弧形状の流通管２４の一端が接続されている。FIG. 3 shows another embodiment of the invention. An air pump 22 is installed on the drain pipe 20 via a support stand 21. A relay pipe 23 extending along the axial direction of the drain pipe 20 is connected to the air pump 22, and one end of a plurality of semicircular arc-shaped flow pipes 24 is connected to the relay pipe 23.
これら中継管２３、流通管２４により空気流通路が構成
されている。流通管２４の他端は、排水管２０の底部に
形成された複数の小孔２５にそれぞれ接続されている。These relay pipes 23 and flow pipes 24 constitute an air flow path. The other end of the flow pipe 24 is connected to a plurality of small holes 25 formed at the bottom of the drain pipe 20, respectively.
これら小孔２５は排水管２０の軸方向に沿って配列され
ている。エアーポンプ２２の駆動により生じた圧縮空気
は、中継管２３および流通管２４を通って小孔２５から
噴き出す。この時の背圧は、中継管２３に接続された検
出用管２６を介して、第１図と同様の装置により検出さ
れる。These small holes 25 are arranged along the axial direction of the drain pipe 20. Compressed air generated by driving the air pump 22 passes through the relay pipe 23 and the flow pipe 24 and is blown out from the small hole 25 . The back pressure at this time is detected by a device similar to that shown in FIG. 1 via a detection tube 26 connected to the relay tube 23.
（発明の効果）
以、に説明したように、本発明にあっては、排水管の底
部から圧縮空気を噴と出させ、この圧縮空気の背圧を検
出することにより、排水管内の水位を測定するものであ
り、排水管内に器具を設置しなくて済むから流通を阻害
せずに測定て外、また、通常満水状態にならない排水管
内の水位を正確に測定でトる。(Effects of the Invention) As explained below, in the present invention, compressed air is jetted out from the bottom of the drain pipe, and the back pressure of this compressed air is detected, thereby controlling the water level in the drain pipe. Since there is no need to install any equipment inside the drain pipe, it is possible to measure without interfering with the flow of water, and it is also possible to accurately measure the water level in the drain pipe, which is normally not full of water.
第１図は本発明装置の一実施例を一部拡大断面にして示
す図、第２図は第１図中■−■線に沿う断面図、第３図
は本発明の他の実施例を示す部分断面図である。
１．２．２０・・・排水管、３，２５・、・小孔、１０
．２２・・・圧縮空気供給機（エアーポンプ）、１３・
・・圧力検出器、Ｓ、６．１１・・・空気流通路、２３
．２４・・・空７−
気流通路
出願人 積水化学工業株式会社
代表者 藤沼 暴利
８−Fig. 1 is a partially enlarged sectional view of one embodiment of the device of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, and Fig. 3 is a diagram showing another embodiment of the present invention. FIG. 1.2.20...Drain pipe, 3,25...Small hole, 10
．． 22... Compressed air supply machine (air pump), 13.
・・Pressure detector, S, 6.11 ・・Air flow path, 23
．． 24...Sky 7- Airflow passage applicant Sekisui Chemical Co., Ltd. representative Fujinuma Haruti 8-
Claims (1)
置された圧縮空気供給機と、圧縮空気供給機からの圧縮
空気を排水管の小孔に送る空気流通路と、空気流通路に
おける圧縮空気の背圧を検出する圧力検出器とを備えた
ことを特徴とする排水管内の水位測定装置。(1) A small hole formed at the bottom of the drain pipe, a compressed air supply machine installed outside the drain pipe, an air flow path that sends compressed air from the compressed air supply machine to the small hole of the drain pipe, and an air flow path 1. A water level measuring device in a drain pipe, comprising: a pressure detector that detects back pressure of compressed air in a flow path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10732884A JPS60250215A (en) | 1984-05-25 | 1984-05-25 | Level measuring device of water discharge pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10732884A JPS60250215A (en) | 1984-05-25 | 1984-05-25 | Level measuring device of water discharge pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60250215A true JPS60250215A (en) | 1985-12-10 |
Family
ID=14456264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10732884A Pending JPS60250215A (en) | 1984-05-25 | 1984-05-25 | Level measuring device of water discharge pipe |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60250215A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016056900A1 (en) | 2014-10-06 | 2016-04-14 | Holding Stamhuis B.V. | Assembly of a sewer and a sewer blockage detection system |
-
1984
- 1984-05-25 JP JP10732884A patent/JPS60250215A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016056900A1 (en) | 2014-10-06 | 2016-04-14 | Holding Stamhuis B.V. | Assembly of a sewer and a sewer blockage detection system |
| NL2013577B1 (en) * | 2014-10-06 | 2016-10-03 | Holding Stamhuis B V | Assembly of a sewer and a sewer blockage detection system. |
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