JPS628130B2 - - Google Patents
Info
- Publication number
- JPS628130B2 JPS628130B2 JP5198780A JP5198780A JPS628130B2 JP S628130 B2 JPS628130 B2 JP S628130B2 JP 5198780 A JP5198780 A JP 5198780A JP 5198780 A JP5198780 A JP 5198780A JP S628130 B2 JPS628130 B2 JP S628130B2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- container
- piping
- hollow
- pressure
- 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
- 239000007788 liquid Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 210000003437 trachea Anatomy 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/32—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators
- G01M3/3236—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3263—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for containers, e.g. radiators by monitoring the interior space of the containers using a differential pressure detector
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Description
【発明の詳細な説明】
本発明は筒形密閉容器の上下に配管接続口を設
け、同容器の内部に設けたフランジの内周縁に上
端開口筒を設けて上端開口固定室を形成し、同筒
と上記密閉容器との中間フランジ上にシール液を
収容し、同筒の外周に上端密閉下端開口中空筒を
昇降自在に配置し、同中空筒の下部をシール液に
沈めて支持して上記両筒を連通し、上記中空筒を
上記密閉容器の上下部に設けた発条にロツドで接
続し、上記中空筒内に固定して設けた差動トラン
スのコアを上記ロツドに支持し、上記中空筒の外
部空間と上記固定室の内部空間との一方を配管に
より基準タンクに連通し、他方を配管により被検
査容器に連通させる構成と、上記両空間を共通圧
気管に弁を介して接続してなる漏れ検出器に関す
るものであつて基準タンクと被検査容器との間の
微小圧力変化より漏れを検出することよりなる漏
れ検出器に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention provides piping connections at the top and bottom of a cylindrical sealed container, and a top-opening tube is provided on the inner peripheral edge of a flange provided inside the container to form a top-opening fixed chamber. A sealing liquid is stored on the intermediate flange between the cylinder and the sealed container, and a hollow cylinder with an upper end closed and a lower end opened is disposed on the outer periphery of the cylinder so as to be movable up and down, and the lower part of the hollow cylinder is submerged in the sealing liquid and supported. The two cylinders are communicated, the hollow cylinder is connected to springs provided at the upper and lower parts of the airtight container with rods, the core of a differential transformer fixedly provided within the hollow cylinder is supported by the rod, and the hollow cylinder is One of the external space of the cylinder and the internal space of the fixed chamber is connected to the reference tank by piping, and the other is connected to the container to be inspected by piping, and both spaces are connected to a common air pressure pipe via a valve. The present invention relates to a leak detector that detects leaks based on minute pressure changes between a reference tank and a container to be inspected.
本発明を図面に示す実施例について説明する
と、第２図に示すように筒形密閉容器１の上下に
配管接続口２′，３′を設け、下部に設けたフラン
ジ４の内周縁に上端開口円筒５を設けて上端開口
固定室６を形成する。上端開口円筒５と上記密閉
容器１との中間フランジ４上にはシール液７を収
容し、上記円筒５の内部には差動トランス８のコ
イル９を固定する。この円筒５の外周には上端密
閉下端開口中空円筒１０を昇降自在に配置し、同
筒１０の下部をシール液７に沈めかつ同筒１０を
密閉容器１の上下部に設けた発条１１，１２にロ
ツド１３で接続して同筒１０の重量を相殺支持す
る。このロツド１３はコイル９の内部を通過し、
コイル９の内部において同ロツド１３にコア１４
を介在させる。配管接続口２′，３′にはそれぞれ
第１図に示す配管２，３を接続し、固定室６の空
間１５に接続する配管３を基準タンク１６に連通
し、上記中空円筒１０と密閉容器１との間の空間
１７に接続する配管２には被検査容器１８を連通
させるよう形成する。このようにした両配管２，
３は弁１９を介して１個の圧気管２０に接続し、
同圧気管２０には減圧弁２１、フイルター２２を
介して圧搾空気源２３を接続する。尚図中２４で
示すものは圧力計、２５は安全弁、２６，２７は
開閉弁、２８は差圧検出アンプ、２９はその配線
である。 To explain the embodiment of the present invention shown in the drawings, as shown in FIG. A cylinder 5 is provided to form a fixed chamber 6 with an open top. A sealing liquid 7 is contained on the intermediate flange 4 between the upper end open cylinder 5 and the closed container 1, and a coil 9 of a differential transformer 8 is fixed inside the cylinder 5. A hollow cylinder 10 with an upper end closed and a lower end open is disposed on the outer periphery of the cylinder 5 so as to be movable up and down. The rod 13 is connected to the cylinder 10 to offset and support the weight of the cylinder 10. This rod 13 passes inside the coil 9,
The core 14 is attached to the same rod 13 inside the coil 9.
intervene. The pipes 2 and 3 shown in FIG. 1 are connected to the pipe connection ports 2' and 3', respectively, and the pipe 3 connected to the space 15 of the fixed chamber 6 is communicated with the reference tank 16, so that the hollow cylinder 10 and the closed container are connected to each other. The pipe 2 connected to the space 17 between the test container 1 and the test container 18 is formed so as to communicate with the container 18 to be inspected. Both piping 2 made like this,
3 is connected to one pneumatic pipe 20 via a valve 19,
A compressed air source 23 is connected to the same pressure trachea 20 via a pressure reducing valve 21 and a filter 22. In the figure, 24 is a pressure gauge, 25 is a safety valve, 26 and 27 are on-off valves, 28 is a differential pressure detection amplifier, and 29 is its wiring.
従つて被検査容器１８を配管２に接続して空間
１７に連通させ、同容器１８および基準タンク１
６に空気源２３から同時に一定圧の空気をフイル
ター２２、減圧弁２１を経て弁１９から供給す
る。この際開閉弁２６，２７は予め開放してお
く。所定の圧力に達した後弁１９を操作して圧気
管２０を閉じる。このようにすると両空間１７，
１５の空気圧は被検査容器１８の漏洩がない場合
は変動しないし上記中空円筒１０の昇降は起らな
いからコア１４の昇降も無いし差圧検出アンプ２
８に接続した表示器の読みは変化しない。ところ
が被検査容器１８に少しでも漏洩があると一方の
空間１７の圧力が低下し両空間１７，１５に差圧
が現われるので上記中空円筒１０は上昇し、それ
に伴つてコア１４も上昇し差動トランス８を動作
し表示器の読みが変化し漏れを検出することがで
きる。 Therefore, the container 18 to be inspected is connected to the piping 2 to communicate with the space 17, and the container 18 and the reference tank 1 are connected to each other.
At the same time, air at a constant pressure is supplied from an air source 23 to 6 through a filter 22, a pressure reducing valve 21, and a valve 19. At this time, the on-off valves 26 and 27 are opened in advance. After reaching a predetermined pressure, the valve 19 is operated to close the pneumatic pipe 20. In this way, both spaces 17,
The air pressure at 15 does not change if there is no leakage from the container 18 to be inspected, and since the hollow cylinder 10 does not rise or fall, the core 14 does not rise or fall, and the differential pressure detection amplifier 2
The reading on the display connected to 8 does not change. However, if there is even a slight leak in the container 18 to be inspected, the pressure in one of the spaces 17 will drop and a differential pressure will appear in both spaces 17 and 15, so the hollow cylinder 10 will rise, and the core 14 will also rise accordingly, causing the differential By operating the transformer 8, the reading on the indicator changes and a leak can be detected.
本発明は上述のように構成したので被検査容器
１８の内部空気圧と基準タンク１６の内部空気圧
とを共通圧気管２０による一定圧気によつて対比
し得ると共に弁１９によつて上記一定圧気管２０
の入口を一度に閉鎖しその状態において被検査容
器１８の漏れが差動トランス８に感知され精密か
つ迅速にこれを検出し得る効果がある。 Since the present invention is configured as described above, it is possible to compare the internal air pressure of the container 18 to be inspected and the internal air pressure of the reference tank 16 by using constant pressure air from the common pressure trachea 20, and also by using the constant pressure air from the common pressure trachea 20.
The inlet of the container 18 to be inspected is closed at once, and in this state, the differential transformer 8 senses leakage from the container 18 to be inspected, and the leakage can be detected accurately and quickly.
第１図は本発明の漏れ検出器を示す配管図、第
２図は差動トランス部の縦断面図である。
１……筒形密閉容器、２，３……配管、２′，
３′……配管接続口、４……フランジ、５……上
端開口筒、６……上端開口固定室、７……シール
液、１０……上端密閉下端開口中空筒、８……差
動トランス、１４……コア、１５，１７……空
間、１６……基準タンク、１８……被検査容器、
２０……共通圧気管、１９……切換弁。
FIG. 1 is a piping diagram showing a leakage detector of the present invention, and FIG. 2 is a longitudinal sectional view of a differential transformer section. 1... Cylindrical sealed container, 2, 3... Piping, 2',
3'... Piping connection port, 4... Flange, 5... Upper end open tube, 6... Upper end open fixing chamber, 7... Seal liquid, 10... Upper end sealed hollow tube, lower end open hollow tube, 8... Differential transformer , 14...core, 15, 17...space, 16...reference tank, 18...test container,
20...Common pressure trachea, 19...Switching valve.
Claims (1)
３′を設け、同容器１の内部に設けたフランジ４
の内周縁に上端開口筒５を設けて上端開口固定室
６を形成し、同筒５と上記密閉容器１との中間フ
ランジ４上にシール液７を収容し、同筒５の外周
に上端密閉下端開口中空筒１０を昇降自在に配置
し、同中空筒１０の下部をシール液７に沈めて支
持して上記両筒５，１０を連通し、上記中空筒１
０を上記密閉容器１の上下部に設けた発条１１，
１２にロツド１３で接続し、上記中空筒１０内に
固定して設けた差動トランス８のコア１４を上記
ロツド１３に支持し、上記中空筒１０の外部空間
１７と上記固定室６の内部空間１５との一方を配
管３により基準タンク１６に連通し、他方を配管
２により被検査容器１８に連通させる構成と、上
記両空間１５，１７を共通圧気管２０に弁１９を
介して接続してなる漏れ検出器。1 Piping connection ports 2' at the top and bottom of the cylindrical sealed container 1,
3' and a flange 4 provided inside the container 1.
A top-opening cylinder 5 is provided on the inner peripheral edge of the cylinder 5 to form a top-opening fixed chamber 6, a sealing liquid 7 is stored on the intermediate flange 4 between the cylinder 5 and the sealed container 1, and a top-opening cylinder 5 is provided on the outer periphery of the cylinder 5. A hollow cylinder 10 with an open bottom end is disposed so as to be freely raised and lowered, and the lower part of the hollow cylinder 10 is submerged in the sealing liquid 7 to be supported so that the two cylinders 5 and 10 are connected to each other.
0 provided at the top and bottom of the airtight container 1,
The core 14 of the differential transformer 8 fixedly provided in the hollow tube 10 is supported by the rod 13, and the outer space 17 of the hollow tube 10 and the inner space of the fixed chamber 6 are connected to the tube 12 by a rod 13. 15 is connected to the reference tank 16 through the piping 3, and the other is connected to the test container 18 through the piping 2, and both spaces 15 and 17 are connected to the common air pressure pipe 20 via the valve 19. A leak detector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5198780A JPS56148032A (en) | 1980-04-19 | 1980-04-19 | Leakage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5198780A JPS56148032A (en) | 1980-04-19 | 1980-04-19 | Leakage detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56148032A JPS56148032A (en) | 1981-11-17 |
| JPS628130B2 true JPS628130B2 (en) | 1987-02-20 |
Family
ID=12902197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5198780A Granted JPS56148032A (en) | 1980-04-19 | 1980-04-19 | Leakage detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56148032A (en) |
-
1980
- 1980-04-19 JP JP5198780A patent/JPS56148032A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56148032A (en) | 1981-11-17 |
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