JP2000346694A - Water-level observation method in pressure-type water level gage - Google Patents
Water-level observation method in pressure-type water level gageInfo
- Publication number
- JP2000346694A JP2000346694A JP11158162A JP15816299A JP2000346694A JP 2000346694 A JP2000346694 A JP 2000346694A JP 11158162 A JP11158162 A JP 11158162A JP 15816299 A JP15816299 A JP 15816299A JP 2000346694 A JP2000346694 A JP 2000346694A
- Authority
- JP
- Japan
- Prior art keywords
- water
- water level
- level
- pressure
- protective hood
- 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
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、圧力式水位計に
おける水位観測方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for observing a water level in a pressure type water level meter.
【０００２】[0002]
【従来の技術】従来、河川等の水位を計測するための水
圧式水位計での観測方法は、図２に示すように、水圧計
ケースの先端にフィルター等の保護ケースが装着されて
いるが、感知部（ダイヤフラム等）は、フィルター等の
保護ケースにより直接水に触れており、微細な土砂が感
知部に付着することがあり、その土砂が感知部にそのま
ま乾燥固着して誤差の原因となっていた。2. Description of the Related Art Conventionally, an observation method using a water pressure type water gauge for measuring the water level of a river or the like is shown in FIG. The sensing part (diaphragm, etc.) is in direct contact with water through a protective case such as a filter, and fine sediment may adhere to the sensing part. Had become.
【０００３】そして、フィルター保護ケースが土砂に埋
まると、土砂重量を加えた間隙水圧を計測することにな
る。しかし、河川の水位は平素から正確な観測をするこ
とにより、多くの人命や財産が保護されるものであり、
従って、観測の際の誤差は絶対に許されないものであ
る。When the filter protective case is buried in earth and sand, the pore water pressure including the earth and sand weight is measured. However, many people and property are protected by accurate observation of the water level of the river from the ordinary.
Therefore, errors during observation are absolutely unacceptable.
【０００４】[0004]
【発明が解決しようとする課題】そこで、この発明は、
従来の方法の欠点を除去し、正確な水位の観測が図れる
圧力式水位計における水位観測方法を開発することにあ
る。SUMMARY OF THE INVENTION Therefore, the present invention
It is an object of the present invention to eliminate the drawbacks of the conventional method and to develop a water level observation method for a pressure type water level gauge capable of accurately measuring the water level.
【０００５】[0005]
【課題を解決するための手段】その手段としては、圧力
式水位計の先端部に筒状の保護フードを装着し、該保護
フード内で感知部を作動させて観測するものである。As means for solving the problem, a cylindrical protective hood is attached to the tip of the pressure type water level gauge, and the sensing unit is operated in the protective hood for observation.
【０００６】[0006]
【発明の実施の形態】本発明の一実施例を図面に基づい
て詳細に説明すると、圧力式水位計を用いる水位観測方
法において、水位計ケース（１）の先端部に、適宜の長
さを有する筒状の保護フード（２）を装着し、該保護フ
ード内にエアーチャンバー（Ｘ）を形成し、該保護フー
ド（２）の口縁部（２ａ）付近に、水圧感知部（３）を
露出して設け、エアーチャンバー（Ｘ）内で水位を観測
するようにしたことを特徴とする圧力式水位計における
水位観測方法からなるものである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to the drawings. In a water level observation method using a pressure type water level meter, an appropriate length is provided at the tip of a water level meter case (1). A cylindrical protective hood (2) having a water pressure sensing unit (3) is formed in the protective hood (2) near the rim (2a) of the protective hood (2). The method comprises a method for observing a water level in a pressure type water level meter, wherein the water level is observed in an air chamber (X) provided in an exposed manner.
【０００７】尚、（４）は、信号線であり、（Ｙ）は堆
積土砂であり、また、筒状の保護フード（２）は、該フ
ードの長軸方向の片側が密閉されており、水圧感知部
（３）は直接水には触れないよう構成しており、水圧感
知部（３）は土砂等が付着しないし、また、微少な水量
水圧では、筒状保護フード（２）内の空気が感知部に伝
えられないものである。[0007] (4) is a signal line, (Y) is sediment, and the cylindrical protective hood (2) is sealed on one side in the longitudinal direction of the hood, The water pressure sensing part (3) is constructed so as not to directly touch the water, and the water pressure sensing part (3) does not adhere to earth and sand. Air cannot be transmitted to the sensing unit.
【０００８】[0008]
【発明の効果】この発明によると、従来の観測法と異な
り、エアーチャンバー内で水圧感知部にて観測するた
め、直接水には触れず、従って、微少な土砂が水圧感知
部に触れることなく、正確な計測ができる等極めて有益
なる効果を奏する。According to the present invention, unlike the conventional observation method, since the water pressure is sensed in the air chamber at the water pressure sensing part, the water does not directly touch the water, so that the fine soil does not touch the water pressure sensing part. This provides an extremely beneficial effect such as accurate measurement.
【図１】この発明の一実施例を示す一部欠截説明図であ
る。FIG. 1 is a partially cutaway explanatory view showing an embodiment of the present invention.
【図２】従来例を示す一部欠截説明図である。FIG. 2 is a partially cutaway explanatory view showing a conventional example.
１ 水位計ケース ２ 筒状保護フード ２ａ 口縁部 ３ 水圧感知部 Ｘ エアーチャンバー Reference Signs List 1 Water level case 2 Tubular protective hood 2a Edge 3 Water pressure sensing unit X Air chamber
Claims (1)
いて、水位計ケースの先端部に、適宜の長さを有する筒
状の保護フードを装着して該保護フード内にエアーチャ
ンバーを形成し、該保護フードの口縁部付近に水圧感知
部を露出して設け、エアーチャンバー内で水位を観測す
るようにしたことを特徴とする圧力式水位計における水
位観測方法。In a water level monitoring method using a pressure type water level meter, a cylindrical protective hood having an appropriate length is attached to a tip portion of a water level meter case, and an air chamber is formed in the protective hood. A method for observing a water level in a pressure-type water level meter, wherein a water pressure sensing unit is provided near an edge of the protective hood so as to be exposed, and a water level is observed in an air chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11158162A JP2000346694A (en) | 1999-06-04 | 1999-06-04 | Water-level observation method in pressure-type water level gage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11158162A JP2000346694A (en) | 1999-06-04 | 1999-06-04 | Water-level observation method in pressure-type water level gage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000346694A true JP2000346694A (en) | 2000-12-15 |
Family
ID=15665633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11158162A Pending JP2000346694A (en) | 1999-06-04 | 1999-06-04 | Water-level observation method in pressure-type water level gage |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000346694A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011231568A (en) * | 2010-04-30 | 2011-11-17 | Maruyama Kogyo Co Ltd | Pore water pressure measuring device, soft ground improvement method using the same, method for determining dynamic state of ground for underground installation, and method for determining dynamic state of ground for banking structure installation |
| JP5677618B2 (en) * | 2012-02-21 | 2015-02-25 | 中国電力株式会社 | Pressure water level meter and pressure water level meter maintenance method |
| CN111771631A (en) * | 2020-07-14 | 2020-10-16 | 中国水利水电科学研究院 | Hydro-fluctuation belt water and soil conservation system and method |
| CN114526787A (en) * | 2022-03-03 | 2022-05-24 | 广州机觉云物联科技有限公司 | Device for improving online service life of liquid level sensor in easily attached slurry |
-
1999
- 1999-06-04 JP JP11158162A patent/JP2000346694A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011231568A (en) * | 2010-04-30 | 2011-11-17 | Maruyama Kogyo Co Ltd | Pore water pressure measuring device, soft ground improvement method using the same, method for determining dynamic state of ground for underground installation, and method for determining dynamic state of ground for banking structure installation |
| JP5677618B2 (en) * | 2012-02-21 | 2015-02-25 | 中国電力株式会社 | Pressure water level meter and pressure water level meter maintenance method |
| CN111771631A (en) * | 2020-07-14 | 2020-10-16 | 中国水利水电科学研究院 | Hydro-fluctuation belt water and soil conservation system and method |
| CN114526787A (en) * | 2022-03-03 | 2022-05-24 | 广州机觉云物联科技有限公司 | Device for improving online service life of liquid level sensor in easily attached slurry |
| CN114526787B (en) * | 2022-03-03 | 2023-01-31 | 广州机觉云物联科技有限公司 | Device for prolonging online service life of liquid level sensor in easily-adhered slurry |
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