JP2867035B2 - Water level measuring device - Google Patents
Water level measuring deviceInfo
- Publication number
- JP2867035B2 JP2867035B2 JP14225889A JP14225889A JP2867035B2 JP 2867035 B2 JP2867035 B2 JP 2867035B2 JP 14225889 A JP14225889 A JP 14225889A JP 14225889 A JP14225889 A JP 14225889A JP 2867035 B2 JP2867035 B2 JP 2867035B2
- Authority
- JP
- Japan
- Prior art keywords
- water level
- antifreeze liquid
- float
- liquid layer
- measuring
- 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 - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims description 50
- 230000002528 anti-freeze Effects 0.000 claims description 26
- 239000007788 liquid Substances 0.000 claims description 26
- 238000005259 measurement Methods 0.000 claims description 16
- 238000006073 displacement reaction Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 description 6
- 230000008014 freezing Effects 0.000 description 5
- 238000007710 freezing Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
Landscapes
- Level Indicators Using A Float (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、冬期あるいは寒冷地において、凍結しやす
い河川，湖沼，水槽等の水位を測定する装置に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an apparatus for measuring the water level of rivers, lakes, marshes, aquariums, etc., which are liable to freeze in winter or cold regions.
従来、凍結した河川等の水位を測定する場合には、そ
の都度測定前に表面に凍結している氷を割る作業を必要
とし、水面を露出させて水位の測定を行っていた。Conventionally, when measuring the water level of a frozen river or the like, it is necessary to break the frozen ice on the surface before each measurement, and the water level is measured by exposing the water surface.
しかしながら、目的とする水位測定作業以外の氷割作
業に時間をとられ、氷の厚さが厚い時には氷割作業が困
難であり、極めて非能率的であった。However, time was required for the ice breaking work other than the intended water level measurement work, and when the ice was thick, the ice breaking work was difficult and extremely inefficient.
本発明は、冬期あるいは寒冷地において、氷割作業を
全く必要とせず、随時水位測定を可能にし、また遠隔表
示をも可能にしかつ長期の使用に対しても誤差を生じな
いようにした水位測定装置を提供することを目的とする
ものである。The present invention provides a water level measurement that does not require any ice breaking operation in winter or cold regions, enables water level measurement at any time, enables remote display, and does not cause an error even for long-term use. It is intended to provide a device.
本発明は、筒体内に不凍液体層を浮揚させ、該筒体内
に前記不凍液体層を貫通しかつ水位と共に昇降自在に断
面積一定の水位測定用フロートを配備したことを特徴と
する水位測定装置であり、また前記水位測定用フロート
にその昇降変位を検出する非接触型変位検出センサーを
組み合わせたことをも特徴とする水位測定装置である。The present invention provides a water level measuring device, wherein an antifreeze liquid layer is floated in a cylinder, and a float for measuring a water level having a constant cross-sectional area is provided in the cylinder so as to penetrate the antifreeze liquid layer and rise and fall with the water level. And a non-contact type displacement detection sensor for detecting the vertical displacement of the float for measuring the water level.
前記構成の本発明では、筒体内は不凍液体層によって
凍結が防止され、また筒体内に配備された水位測定用フ
ロートは不凍液体層を貫通して不凍液体層による浮力や
不凍液体層の温度変化による比重変化等にも影響される
ことなく、水位変動に伴って昇降しその時の水位を正確
に読みとることができる。In the present invention having the above configuration, the inside of the cylinder is prevented from freezing by the antifreeze liquid layer, and the float for measuring the water level provided in the cylinder penetrates through the antifreeze liquid layer and changes in buoyancy and the temperature change of the antifreeze liquid layer due to the antifreeze liquid layer. The water level rises and falls with the fluctuation of the water level, and the water level at that time can be accurately read without being affected by the specific gravity change or the like.
また、水位測定用フロートにその昇降変位を検出する
非接触型変位検出センサーを組み合わせた時は、長期間
にわたって水位測定用フロートの昇降変位から水位を正
確に遠隔表示またはエンドレスに表示することができ
る。In addition, when a non-contact type displacement detection sensor that detects the elevation displacement is combined with the water level measurement float, the water level can be accurately displayed remotely or endlessly from the elevation displacement of the water level measurement float over a long period of time. .
本発明の一実施例を図面を参照して説明すれば、第１
図において、河川等の水面付近の凍結部１を貫通してパ
イプ２を垂下し、このパイプ２内には不凍液体、例えば
流動点が−60℃以下の不凍液体を収容し、その不凍液体
層３の厚さは予め予想される凍結部の厚さｈと同等かそ
れより厚くして水面上に浮揚させ、パイプ２内では水の
凍結が防止されるようになっている。さらにパイプ２内
には、不凍液体層３を貫通して水位測定用フロート４が
配備され、この水位測定用フロート４は水位と共にガイ
ド５に沿って昇降自在となっている。One embodiment of the present invention will be described with reference to the drawings.
In the figure, a pipe 2 penetrates through a frozen portion 1 near the water surface of a river or the like, and a pipe 2 is suspended therein. An antifreeze liquid, for example, an antifreeze liquid having a pour point of −60 ° C. or less, is stored in the pipe 2. The thickness of the pipe 3 is equal to or larger than the thickness h of the frozen section which is expected in advance, and floats on the water surface, so that freezing of water in the pipe 2 is prevented. Further, a float 4 for measuring the water level is provided in the pipe 2 so as to penetrate the antifreeze liquid layer 3, and the float 4 for measuring the water level is movable up and down along the guide 5 together with the water level.
ところで、パイプ２内に不凍液体層３を浮揚させて凍
結を防止する場合、不凍液体層３は水位の変動につれて
上下に移動する。従って、不凍液体層３内に水位測定用
フロートを配備すれば、水位の変動を読みとることがで
きる。しかしながら、不凍液体は温度変化によって比重
が変化し、第２図のように、不凍液体層３の体積、即ち
高さがＨからＨ′に変化すると、Ｈ′−Ｈの高さが水位
測定誤差となる。When the antifreeze liquid layer 3 is floated in the pipe 2 to prevent freezing, the antifreeze liquid layer 3 moves up and down as the water level changes. Therefore, if a float for measuring the water level is provided in the antifreeze liquid layer 3, the fluctuation of the water level can be read. However, the specific gravity of the antifreeze liquid changes due to the temperature change, and as shown in FIG. 2, when the volume of the antifreeze liquid layer 3, that is, the height changes from H to H ′, the height of H′−H becomes the water level measurement error. Becomes
このような、温度変化による測定誤差を排除するため
に、本発明では水位測定用フロート４を不凍液体層３を
貫通させてその下端が水による浮力を受けるようにし、
またその上端を不凍液体層３より上に突出させて水位測
定用フロート４に不凍液体による荷重がかからないよう
にし、かつ水位測定用フロート４を不凍液体層３による
浮力を受けないように断面積一定の形状にする。従っ
て、本発明の水位測定用フロート４は、不凍液体層３の
浮力や体積変化の影響を全く受けることなく水位変動に
よって昇降し、その変位から正確な水位を読みとること
ができる。In order to eliminate such a measurement error due to a temperature change, in the present invention, the water level measurement float 4 is made to penetrate the antifreeze liquid layer 3 so that the lower end thereof receives buoyancy by water,
Further, the upper end thereof is projected above the antifreeze liquid layer 3 so that the load due to the antifreeze liquid is not applied to the water level measurement float 4 and the water level measurement float 4 has a constant cross-sectional area so as not to be subjected to buoyancy by the antifreeze liquid layer 3. Shape. Therefore, the float 4 for measuring the water level of the present invention rises and falls due to the fluctuation of the water level without being affected by the buoyancy and the volume change of the antifreeze liquid layer 3 at all, and the accurate water level can be read from the displacement.
また、水位測定用フロート４の昇降変位を遠隔表示ま
たはエンドレス表示させるために非接触型変位検出セン
サーを組み合わせると便利であり、例えば第３図の如く
ガイド５に案内されて昇降自在のマグネット６を水位測
定用フロート４の上端等に取り付け、その対向位置に検
出センサー７を設置し、水位測定用フロート４と共に昇
降するマグネット６の変位をアナログ，デジタルにより
表示する。例えば、第４図に示すように、水位測定用フ
ロート４と共に昇降するマグネットの位置、即ち水位を
検出センサーで検出し、コントローラC,変換器Ｖを経て
パネル表示Ｐさせる。その場合の供給電源として通常の
バッテリＢを使用することができるが、太陽電池Ｓを使
用すれば、停電時の作動不能がなく、またどのような場
所にも簡単に取り付けることができるから便利である。It is convenient to combine a non-contact type displacement detection sensor for remotely or endlessly displaying the elevation displacement of the water level measurement float 4. For example, as shown in FIG. Attachment is made to the upper end of the water level measurement float 4 and the like, and a detection sensor 7 is installed at a position opposite to the upper end. The displacement of the magnet 6 which moves up and down together with the water level measurement float 4 is displayed in analog and digital form. For example, as shown in FIG. 4, the position of the magnet which moves up and down together with the water level measuring float 4, that is, the water level is detected by the detection sensor, and the panel display P is made via the controller C and the converter V. In this case, a normal battery B can be used as a power supply. However, if a solar cell S is used, there is no inoperability at the time of a power failure, and it can be easily installed in any place. is there.
以上述べたように、本発明は筒体内に不凍液体層を浮
揚させて筒体内の水の凍結を防止し、この筒体内に不凍
液体層を貫通して水位と共に昇降自在に断面積一定の水
位測定用フロートを配備したものであるから、氷割作業
を必要とせず、不凍液体層に影響されることなく、水位
を迅速かつ誤差なく正確に測定し、さらに、非接触型変
位センサーを組み合わせることにより、長期間にわたっ
て遠隔表示またはエンドレス表示することができるもの
である。As described above, the present invention floats an antifreeze liquid layer in a cylinder to prevent freezing of water in the cylinder, and penetrates the antifreeze liquid layer into the cylinder to raise and lower with the water level. Since a measuring float is installed, the water level is measured quickly and accurately without any need for ice-breaking work, without being affected by the antifreeze liquid layer, and combined with a non-contact type displacement sensor. Thus, remote display or endless display can be performed for a long period of time.
第１図は本発明の一実施例を示す切断側面図、第２図は
凍結防止のための不凍液体層の状態説明図、第３図は本
発明の非接触変位センサーの構成説明図、第４図は非接
触変位センサーを使用した一例を示すシステム図であ
る。 １……凍結部、２……パイプ、３……不凍液体層、４…
…水位測定用フロート、５……ガイド、６……マグネッ
ト、７……検出センサー。FIG. 1 is a cutaway side view showing an embodiment of the present invention, FIG. 2 is an explanatory view of a state of an antifreeze liquid layer for preventing freezing, FIG. 3 is an explanatory view of a configuration of a non-contact displacement sensor of the present invention, FIG. FIG. 4 is a system diagram showing an example using a non-contact displacement sensor. 1 ... frozen part, 2 ... pipe, 3 ... antifreeze liquid layer, 4 ...
... Float for measuring water level, 5 ... Guide, 6 ... Magnet, 7 ... Detection sensor.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.6，ＤＢ名) G01F 23/30 G01F 23/00──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. 6 , DB name) G01F 23/30 G01F 23/00
Claims (2)
に前記不凍液体層を貫通しかつ水位と共に昇降自在に断
面積一定の水位測定用フロートを配備したことを特徴と
する水位測定装置。1. A water level measurement, wherein an antifreeze liquid layer is levitated in a cylinder, and a water level measurement float having a constant cross-sectional area is provided in the cylinder so as to penetrate the antifreeze liquid layer and move up and down with the water level. apparatus.
検出する非接触型変位検出センサーを組み合わせた請求
項１記載の水位測定装置。2. The water level measuring device according to claim 1, wherein the float for measuring the water level is combined with a non-contact type displacement detecting sensor for detecting a vertical displacement of the float.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14225889A JP2867035B2 (en) | 1989-06-06 | 1989-06-06 | Water level measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14225889A JP2867035B2 (en) | 1989-06-06 | 1989-06-06 | Water level measuring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH039222A JPH039222A (en) | 1991-01-17 |
| JP2867035B2 true JP2867035B2 (en) | 1999-03-08 |
Family
ID=15311145
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14225889A Expired - Fee Related JP2867035B2 (en) | 1989-06-06 | 1989-06-06 | Water level measuring device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2867035B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3307610B2 (en) | 1999-06-23 | 2002-07-24 | 株式会社タツノ・メカトロニクス | Tank liquid level measurement device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000604A (en) * | 2018-04-11 | 2018-12-14 | 哈尔滨工程大学 | A kind of ice sheet vibration displacement measuring device |
| CN112833997B (en) * | 2020-12-31 | 2023-01-31 | 中国电建集团中南勘测设计研究院有限公司 | Magnetic water level meter and measuring method thereof |
-
1989
- 1989-06-06 JP JP14225889A patent/JP2867035B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3307610B2 (en) | 1999-06-23 | 2002-07-24 | 株式会社タツノ・メカトロニクス | Tank liquid level measurement device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH039222A (en) | 1991-01-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
| LAPS | Cancellation because of no payment of annual fees |