JPS6348287B2 - - Google Patents
Info
- Publication number
- JPS6348287B2 JPS6348287B2 JP55116100A JP11610080A JPS6348287B2 JP S6348287 B2 JPS6348287 B2 JP S6348287B2 JP 55116100 A JP55116100 A JP 55116100A JP 11610080 A JP11610080 A JP 11610080A JP S6348287 B2 JPS6348287 B2 JP S6348287B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- hollow body
- internal volume
- storage container
- liquid level
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Level Indicators Using A Float (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、例えば地下に埋設された配管などの
密閉された中空体への気体送入による圧力上昇に
基づいて前記中空体の内容積を測定する装置に関
する。[Detailed Description of the Invention] [Industrial Application Field] The present invention is a system for increasing the internal volume of a sealed hollow body, such as a pipe buried underground, based on the pressure increase caused by supplying gas to the hollow body. It relates to a measuring device.
従来、密閉された中空体に送入する気体量が一
定になるように構成し、送入気体の圧力上昇をマ
ノメータで精度良く測定できるように構成してい
た。
Conventionally, the amount of gas fed into a sealed hollow body was configured to be constant, and the pressure rise of the fed gas was configured to be accurately measured with a manometer.
しかし、送入する気体量が少ない装置によつて
大容積の中空体の内容積を測定すると、圧力上昇
が微小になるために、測定誤差（％）が大きくな
り、逆に、送入する気体量が多い装置によつて小
容積の中空体の内容積を測定すると、圧力上昇が
極めて大きくなるために、マノメータの長さが足
りなくて測定できなくなる欠点があつた。
However, when measuring the internal volume of a large-volume hollow body using a device that supplies only a small amount of gas, the measurement error (%) increases because the pressure rise becomes minute; When measuring the internal volume of a small-volume hollow body using a large-capacity device, the pressure rise becomes extremely large, resulting in the disadvantage that the length of the manometer is insufficient to make measurement possible.
また、送入する気体量が相違する複数の装置を
準備し、中空体の内容積に応じて装置を選択する
場合、装置の保管や運搬が不便であり、適切な装
置を選定する作業が面倒になる欠点があつた。 In addition, when preparing multiple devices with different amounts of gas to be introduced and selecting the device according to the internal volume of the hollow body, it is inconvenient to store and transport the devices, and the task of selecting the appropriate device is troublesome. It had some drawbacks.
本発明の目的は、中空体の内容積変化が大きく
ても十分に対応できるように測定範囲を拡大でき
るように、中空体の内容積の大小にかかわらず測
定誤差（％）の変動を小さく抑えられるように、
かつ、小型で操作簡単なものにできるようにする
点にある。 The purpose of the present invention is to suppress fluctuations in measurement error (%) to a small level regardless of the size of the internal volume of the hollow body, so that the measurement range can be expanded to sufficiently cope with large changes in the internal volume of the hollow body. so that you can
Moreover, it is possible to make it small and easy to operate.
本発明の特徴構成は、密閉された中空体との接
続口を気液収納容器の上端側に接続し、前記気液
収納容器内の液面下で下端が開口すると共に上端
が大気開放された細径管、及び、前記気液収納容
器内の液面を強制上昇させる機構を設け、前記細
径管の上下二箇所に基準線を表示し、前記気液収
納容器に上下方向に並ぶ測定内容積目盛を液面に
対応させて表示したことにあり、その作用効果は
次の通りである。
The characteristic configuration of the present invention is that the connection port with the sealed hollow body is connected to the upper end side of the gas-liquid storage container, the lower end is opened below the liquid level in the gas-liquid storage container, and the upper end is opened to the atmosphere. A small-diameter tube and a mechanism for forcibly raising the liquid level in the gas-liquid storage container are provided, reference lines are displayed at two locations on the top and bottom of the small-diameter tube, and measurement contents are arranged vertically in the gas-liquid storage container. The reason is that the scale is displayed in correspondence with the liquid level, and its effects are as follows.
つまり、次のように使用する。 That is, use it like this:
(イ) 液面上昇用機構によつて気液収納容器内の液
面を細径管内の下方の基準線に合わせ、その
後、測定対象である中空体に接続口を連通させ
る。(a) Adjust the liquid level in the gas-liquid storage container to the lower reference line in the small diameter tube using the liquid level raising mechanism, and then connect the connection port to the hollow body to be measured.
(ロ) 液面上昇用機構によつて液面を上昇させて、
気液収納容器内の気体を中空体に送入し、細径
管内の液面が上方の基準線に到達すれば気体送
入を止める。(b) Raise the liquid level using the liquid level raising mechanism,
The gas in the gas-liquid storage container is fed into the hollow body, and when the liquid level in the small diameter tube reaches the upper reference line, the gas feeding is stopped.
(ハ) 気液収納容器内の液面と測定内容積目盛によ
つて中空体の内容積を読取る。(c) Read the internal volume of the hollow body based on the liquid level in the gas-liquid storage container and the measurement internal volume scale.
上述のように、下端側が液面下で開口すると共
に上端側が大気開放された細径管内で液面を一定
高さだけ上昇させると、密閉された中空体に連通
する気液収納容器内の液面上昇高さと中空体の内
容積の相関が第３図に示すようになり、その理由
は次の通りである。 As mentioned above, when the liquid level is raised to a certain height in a small diameter tube whose lower end is open below the liquid level and whose upper end is open to the atmosphere, the liquid in the air-liquid storage container communicating with the sealed hollow body will rise. The correlation between the surface elevation height and the internal volume of the hollow body is as shown in FIG. 3, and the reason is as follows.
液面を下方の基準線に合わせて中空体に気液収
納容器をホースで接続した時、中空体と気液収納
容器の気圧は大気圧P0であり、この時の気液収
納容器と接続用ホースの空間容積の和をV1とす
る。また、中空体の内容積をV2とする。 When the gas-liquid storage container is connected to the hollow body with a hose with the liquid level aligned with the lower reference line, the air pressure between the hollow body and the gas-liquid storage container is atmospheric pressure P 0 , and the connection with the gas-liquid storage container at this time is Let V 1 be the sum of the space volumes of the hoses. Also, let the internal volume of the hollow body be V2 .
中空体の内部に気体を送入して細径管内の液面
を上方の基準線に合わせた時、気液収納容器の液
面上昇高さをｈ、気液収納容器内の液面と細径管
内の液面とのレベル差をＨ、気液収納容器とホー
スの空間容積の和をV2、中空体と気液収納容器
の気圧をＰとする。また、液の比重をρ、重力加
速度をｇとする。 When gas is introduced into the hollow body and the liquid level in the small-diameter tube is aligned with the upper reference line, the height of the rise in the liquid level in the gas-liquid storage container is h, and the liquid level in the gas-liquid storage container and the thin Let H be the level difference with the liquid level in the radial pipe, V 2 be the sum of the spatial volumes of the gas-liquid storage container and the hose, and P be the atmospheric pressure of the hollow body and the gas-liquid storage container. Further, let the specific gravity of the liquid be ρ and the gravitational acceleration be g.
ボイルの法則により、
P0（Ｖ＋V1）＝Ｐ（Ｖ＋V2） ……(1)
他方、
Ｐ＝P0＋ρ gH ……(2)
(1)及び(2)式によりＰを消去すると、
P0（Ｖ＋V1）＝（P0＋ρ gH）（Ｖ＋V2）
ρ gH（Ｖ＋V2）＝P0（Ｖ−V2）
Ｈ＝P0（V1−V2）／ρg（Ｖ＋V2） ……(3)
気液収納容器の断面積をＳとすると、
V1−V2＝Sh ………(4)
Ｖ≫V2であるから、(3)式と(4)式から
Ｈ＝P0Sh／ρ gV
したがつて、
Ｖ＝P0Sh／ρ gH ………(5)
上下の基準線間隔をＴとすると、
Ｔ＝ｈ−Ｈ
Ｈ＝ｈ−Ｔ ………(6)
(5)式に式(6)式を代入すると、
Ｖ＝P0Sh／ρg（ｈ−Ｔ）
つまり、P0、Ｓ、ρ、ｇ、Ｔの全てが定数で
あるからＶはｈの関数となり、第３図に例示する
ような相関になる。 According to Boyle's law, P 0 (V + V 1 ) = P (V + V 2 ) ... (1) On the other hand, P = P 0 + ρ gH ... (2) If P is eliminated using equations (1) and (2), P 0 (V+V 1 )=(P 0 +ρ gH)(V+V 2 ) ρ gH(V+V 2 )=P 0 (V-V 2 ) H=P 0 (V 1 −V 2 )/ρg(V+V 2 )... (3) If the cross-sectional area of the gas-liquid storage container is S, then V 1 −V 2 = Sh (4) Since V≫V 2 , from equations (3) and (4), H=P 0 Sh/ρ gV Therefore, V=P 0 Sh/ρ gH ………(5) If the interval between the upper and lower reference lines is T, then T=h−H H=h−T ………(6) (5 ) Substituting equation (6) into equation (6), we get V=P 0 Sh/ρg (h-T) In other words, since P 0 , S, ρ, g, and T are all constants, V becomes a function of h, The correlation is as illustrated in FIG.
したがつて、気液収納容器内の液面の単位上昇
高さ当りの中空体内容積変化が、中空体の内容積
が大きくなるほど大になり、測定内容積目盛の上
下長さが短い割には測定範囲を極めて大きくで
き、装置をコンパクトにできる。 Therefore, the change in the internal volume of the hollow body per unit rise in height of the liquid level in the gas-liquid storage container increases as the internal volume of the hollow body increases, and even though the vertical length of the measurement internal volume scale is short, The measurement range can be made extremely large and the device can be made compact.
また、中空体の内容積が小さいほど、内容積変
化当りの水面高さ変化が大きくて測定誤差（絶対
値）を小さくでき、％としての測定誤差の変動を
中空体内容積の大小にかかわらず十分に抑えら
れ、実用面で便利である。 In addition, the smaller the internal volume of the hollow body, the larger the change in water surface height per change in internal volume, and the smaller the measurement error (absolute value). It is convenient from a practical point of view.
さらに、液面上昇用機構によつて細径管内の液
面を下方の基準線から上方の基準線に上昇させる
だけで、中空体内容積に見合つた気体送入量が自
動的に決定されるから、測定を極めて容易かつ迅
速に実行できる。 Furthermore, by simply raising the liquid level in the small diameter tube from the lower reference line to the upper reference line using the liquid level raising mechanism, the amount of gas to be fed commensurate with the internal volume of the hollow body is automatically determined. , measurements can be carried out extremely easily and quickly.
その結果、広範な内容積範囲を１台の装置で測
定できると共に測定誤差（％）の変動が小さい状
態で測定でき、しかも、操作が簡単でコンパクト
な、性能及び取扱い面で一段と優れた内容積測定
装置を提供できるようになつた。
As a result, it is possible to measure a wide range of internal volumes with one device, with small fluctuations in measurement error (%), and it is easy to operate, compact, and has an internal volume that is even better in terms of performance and handling. We are now able to provide measuring equipment.
次に第１図により実施例を示す。 Next, an example will be shown with reference to FIG.
気液収納容器１の上端側に、測定対象である密
閉された中空体Ａにホース９で連通させるための
接続口１ａを接続し、気液収納容器１内を仕切壁
４で上室１Ａと下室１Ｂに区画し、下室１Ｂに液
体を入れてある。 A connection port 1a is connected to the upper end of the gas-liquid storage container 1 for communicating with the sealed hollow body A to be measured using a hose 9, and the inside of the gas-liquid storage container 1 is connected to the upper chamber 1A by a partition wall 4. It is divided into a lower chamber 1B, and a liquid is placed in the lower chamber 1B.
下室の上端側に接続した管６に、手押し式の気
体送入器７をホース８で接続して、気液収納容器
１内の液面を強制上昇させる機構３を形成し、下
端が下室１Ｂの底部近くで開口する管５を上室１
Ａに接続し、下端が上室１Ａの底部近くで開口す
る細径管２を、上端が大気開放された状態で設
け、気体送入器７による空気圧入に伴つて、下室
１Ｂから上室１Ａに管５で液体を送り、上室１Ａ
内での液面上昇で中空体Ａに気体を送入できるよ
うに構成してある。 A hand-operated gas feeder 7 is connected with a hose 8 to a pipe 6 connected to the upper end side of the lower chamber to form a mechanism 3 for forcibly raising the liquid level in the gas-liquid storage container 1. The tube 5 that opens near the bottom of the chamber 1B is connected to the upper chamber 1.
A small-diameter tube 2 is connected to the upper chamber 1A, and its lower end opens near the bottom of the upper chamber 1A, and the upper end is opened to the atmosphere. Send the liquid to 1A with tube 5, and send the liquid to upper chamber 1A.
The structure is such that gas can be introduced into the hollow body A when the liquid level within the hollow body A rises.
細径管２の上下２箇所に基準線ａ，ｂを表示
し、測定に際し、中空体Ａに接続する前に、気液
収納容器１と細径管２内の液面を下方の基準線ａ
に合わせるように、かつ、中空体Ａに接続した後
に、細径管２内の液面が上方の基準線ｂに達する
まで、液面上昇用機構３で上室１Ａ内に液体を送
つて上室１Ａ内の気体を中空体Ａ内に送入するよ
うに構成してある。 Reference lines a and b are displayed on the upper and lower sides of the small diameter tube 2, and when measuring, before connecting to the hollow body A, the liquid level in the gas-liquid storage container 1 and the small diameter tube 2 is displayed on the lower reference line a.
and after connecting to the hollow body A, the liquid level raising mechanism 3 sends the liquid into the upper chamber 1A until the liquid level in the small diameter tube 2 reaches the upper reference line b. It is configured so that the gas in the chamber 1A is introduced into the hollow body A.
気液収納容器１に、上下方向に並ぶ測定内容積
目盛ｃを表示し、その目盛ｃと上室１Ａ内の液面
とによつて中空体Ａの内容積を測定できるように
構成してある。測定内容積目盛ｃによる液面上昇
高さの読取値ｈと中空体Ａの内容積Ｖとの相関
は、例えば第３図のようになり、装置がコンパク
トな割には測定範囲が広く、かつ、内容積Ｖが小
さい程測定誤差（絶対値）が小さくなつて、内容
積Ｖの大小にかかわらず％としての測定誤差の変
動が小さくなる。 The gas-liquid storage container 1 is configured to display measurement internal volume scales c arranged in the vertical direction, and the internal volume of the hollow body A can be measured based on the scales c and the liquid level in the upper chamber 1A. . The correlation between the reading value h of the liquid level rise height according to the measurement internal volume scale c and the internal volume V of the hollow body A is as shown in FIG. , the smaller the internal volume V is, the smaller the measurement error (absolute value) is, and the fluctuation of the measurement error as a percentage becomes smaller regardless of the size of the internal volume V.
次に別実施例を説明する。 Next, another embodiment will be described.
前述実施例のように、気液収納容器１を透明と
し、細径管２や管６を上室１Ａの内部に配置して
上室１Ａの上方へ導出すると取扱い上便利である
が、必ずしもそうしなくても良く、細径管２を下
端近くで上室１Ａ外に出して立上げてもよく、
又、管６を下室１Ｂの任意の位置から導出してよ
い。 As in the above-mentioned embodiment, it is convenient for handling if the gas-liquid storage container 1 is made transparent and the small-diameter tube 2 and tube 6 are placed inside the upper chamber 1A and led out above the upper chamber 1A, but this is not always the case. It is not necessary to do so, and the small diameter tube 2 may be brought out of the upper chamber 1A near the lower end and set up.
Further, the tube 6 may be led out from any position in the lower chamber 1B.
液面上昇用機構３を形成するに、前述のゴム球
式の気体送入器７に代えて、足踏み式ポンプを設
けたり、第２図に示すように、操作ロツド１０付
きピストン１１を気液収納容器１に摺動操作自在
に内嵌させ、摺動パツキン１２で液洩れを防止す
るように構成してもよい。 To form the liquid level raising mechanism 3 , a foot pump may be provided in place of the rubber ball type gas feeder 7, or a piston 11 with an operating rod 10 may be connected to a gas/liquid pump as shown in FIG. It may be constructed so that it is slidably inserted into the storage container 1 and a sliding gasket 12 is used to prevent liquid leakage.
第１図は本発明の実施例を示す概略断面図、第
２図は本発明の別実施例を示す概略断面図、第３
図は液面レベル上昇高さと中空体内容積の相関を
示すグラフである。
１ａ……接続口、１……気液収納容器、１Ａ…
…上室、１Ｂ……下室、２……細径管、３……液
面上昇用機構、４……仕切壁、５……管、７……
気体送入器、ａ，ｂ……基準線、ｃ……測定内容
積目盛。
Fig. 1 is a schematic sectional view showing an embodiment of the present invention, Fig. 2 is a schematic sectional view showing another embodiment of the invention, and Fig. 3 is a schematic sectional view showing another embodiment of the invention.
The figure is a graph showing the correlation between the height of rise in the liquid level and the internal volume of the hollow body. 1a... Connection port, 1... Gas-liquid storage container, 1A...
...Upper chamber, 1B...Lower chamber, 2...Small diameter pipe, 3 ...Liquid level rising mechanism, 4...Partition wall, 5...Pipe, 7...
Gas feeder, a, b...Reference line, c...Measurement internal volume scale.
Claims (1)
上昇に基づいて前記中空体Ａの内容積を測定する
装置であつて、前記中空体Ａとの接続口１ａを気
液収納容器１の上端側に接続し、前記気液収納容
器１内の液面下で下端が開口すると共に上端が大
気開放された細径管２、及び、前記気液収納容器
１内の液面を強制上昇させる機構３を設け、前記
細径管２の上下二箇所に基準線ａ，ｂを表示し、
前記気液収納容器１に上下方向に並ぶ測定内容積
目盛ｃを液面に対応させて表示してある内容積測
定装置。 ２ 前記気液収納容器１を前記細径管２の下端開
口より下方位置に設けた仕切壁４により上室１Ａ
と下室１Ｂに区画し、前記下室１Ｂの底部近くで
下端が開口する管５を前記上室１Ａに接続し、前
記液面上昇用機構３を形成するに、前記下室１Ｂ
に対して気体送入器７を接続してある特許請求の
範囲第１項に記載の内容積測定装置。[Scope of Claims] 1. A device for measuring the internal volume of a sealed hollow body A based on a pressure increase caused by supplying gas to the hollow body A, wherein a connection port 1a with the hollow body A is connected to the hollow body A. A small-diameter tube 2 connected to the upper end side of the liquid storage container 1 and having a lower end opened below the liquid level in the gas-liquid storage container 1 and an upper end opened to the atmosphere; A mechanism 3 for forcibly raising the surface is provided, and reference lines a and b are displayed at two locations above and below the small diameter tube 2,
This internal volume measuring device has measuring internal volume scales c arranged vertically on the gas-liquid storage container 1 and displayed in correspondence with the liquid level. 2 The gas-liquid storage container 1 is connected to the upper chamber 1A by a partition wall 4 provided at a position below the lower end opening of the narrow diameter tube 2.
A pipe 5 whose lower end opens near the bottom of the lower chamber 1B is connected to the upper chamber 1A to form the liquid level raising mechanism 3 .
The internal volume measuring device according to claim 1, wherein a gas feeder 7 is connected to the internal volume measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11610080A JPS5740613A (en) | 1980-08-23 | 1980-08-23 | Internal capacity measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11610080A JPS5740613A (en) | 1980-08-23 | 1980-08-23 | Internal capacity measuring apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5740613A JPS5740613A (en) | 1982-03-06 |
| JPS6348287B2 true JPS6348287B2 (en) | 1988-09-28 |
Family
ID=14678695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11610080A Granted JPS5740613A (en) | 1980-08-23 | 1980-08-23 | Internal capacity measuring apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5740613A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02100194A (en) * | 1988-10-07 | 1990-04-12 | Fuji Electric Co Ltd | Setting device for control data on automatic vending machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5626805A (en) * | 1979-08-14 | 1981-03-16 | Kumiai Chem Ind Co Ltd | Insecticidal and antimicrobial composition for acriculture and horticulture |
-
1980
- 1980-08-23 JP JP11610080A patent/JPS5740613A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02100194A (en) * | 1988-10-07 | 1990-04-12 | Fuji Electric Co Ltd | Setting device for control data on automatic vending machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5740613A (en) | 1982-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4630478A (en) | Liquid volume sensor system | |
| Amoozegar | A compact constant‐head permeameter for measuring saturated hydraulic conductivity of the vadose zone | |
| US5105662A (en) | Liquid level measurement system | |
| US20090120182A1 (en) | Submarine sampler | |
| US3994169A (en) | Material depth measurement and indicator | |
| JPS6348287B2 (en) | ||
| US2949766A (en) | Apparatus for measuring fluid permeability of porous materials | |
| US2012511A (en) | Liquid gauge and system | |
| US4297791A (en) | Hose water leveling instrument | |
| US3015167A (en) | Liquid level | |
| US3217541A (en) | Remote reading gauge | |
| US4154098A (en) | Volume measuring method and apparatus | |
| US2760373A (en) | Liquid level and temperature indicator | |
| US2117185A (en) | Apparatus for measuring the volume of liquid in a tank | |
| CN213748403U (en) | Flexible rule for engineering survey | |
| US5659966A (en) | Hydrostatic level measuring and survey apparatus | |
| US3086397A (en) | Pneumatic device | |
| US2794338A (en) | Determination of pore size distribution in large core samples | |
| US4375765A (en) | Level indicating device | |
| CN212206984U (en) | Liquid specific gravity measuring device | |
| CN206772386U (en) | A kind of pressure differential method liquid level measuring system | |
| US3906794A (en) | Device to indicate the contents in an underground liquid containing tank | |
| US4075770A (en) | Metric system teaching and measuring device | |
| US2836067A (en) | U-tube manometer | |
| US4422244A (en) | Elevation indicator |