JPH11237300A - Drum can leakage inspection device due to differential pressure method - Google Patents

Drum can leakage inspection device due to differential pressure method

Info

Publication number
JPH11237300A
JPH11237300A JP3931598A JP3931598A JPH11237300A JP H11237300 A JPH11237300 A JP H11237300A JP 3931598 A JP3931598 A JP 3931598A JP 3931598 A JP3931598 A JP 3931598A JP H11237300 A JPH11237300 A JP H11237300A
Authority
JP
Japan
Prior art keywords
drum
differential pressure
leakage
inspected
pressurizing
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
Application number
JP3931598A
Other languages
Japanese (ja)
Inventor
Takeshi Ishizaki
武志 石崎
Makoto Takai
誠 高井
Original Assignee
Ishikawajima Inspection & Instrumentation Co
石川島検査計測株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ishikawajima Inspection & Instrumentation Co, 石川島検査計測株式会社 filed Critical Ishikawajima Inspection & Instrumentation Co
Priority to JP3931598A priority Critical patent/JPH11237300A/en
Publication of JPH11237300A publication Critical patent/JPH11237300A/en
Pending legal-status Critical Current

Links

Abstract

PROBLEM TO BE SOLVED: To relatively easily and automatically detect the leakage of a drum can. SOLUTION: A leakage inspection device is provided with a pressurization pipe 3 that connects a reference drum can 1 without any leakage and a drum can 2 to be inspected and has a shut-off valve 5 in the middle, a pressurization line 4 for supplying a pressurization gas to the pressurization pipe 3, a differential pressure meter 8 for measuring a differential pressure across the both terminals of the shut-off valve 5 of the pressurization pipe 3, and a judging device 9 for detecting the leakage of the drum can to be inspected according to the measurement value of the differential pressure meter 8. The judging device 9 judges that the drum can 2 to be inspected leaks when a differential pressure is 0.0006 kgf/cm<2> or larger when 60 seconds pass after the differential pressure is measured.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【0001】[0001]
【発明の属する技術分野】本発明は、ドラム缶などの容
器の漏れを差圧法により検出するドラム缶漏洩検査装置
に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum leakage inspection apparatus for detecting leakage of a container such as a drum by a differential pressure method.
【0002】[0002]
【従来の技術】鋼製ドラム缶は液体・固体を問わず、さ
まざまな製品が詰められて輸送・貯蔵に使用されてい
る。使用済ドラム缶は残渣物を適切に除去し、洗浄、整
形、塗装および必要に応じ部品等の取り替えを行い、再
び製品の輸送・貯蔵用容器として市場に出される。
2. Description of the Related Art Steel drums are packed with various products, whether liquid or solid, and are used for transportation and storage. Used drums are appropriately removed of residues, washed, shaped, painted, and replaced with necessary parts, etc., and then put back on the market as containers for transporting and storing products.
【0003】ドラム缶は胴に天板と地板を接合して構成
されており、この接合部を巻締部という。使用済ドラム
缶はこの巻締部やさびなどにより発生したピンホールよ
り漏洩する場合があり、この漏洩検査を行って合格した
缶のみ市場に出される。試験方法としては、健全なドラ
ム缶と試験対象のドラム缶とを一定圧に加圧後、両ドラ
ム缶の差圧を差圧計により目視で計測し所定時間内に差
圧がしきい値を越えた場合漏洩が発生していると判定し
ていた。
[0003] A drum can is formed by joining a top plate and a main plate to a body, and this joined portion is called a winding portion. A used drum can leaks from a pinhole generated by the tightened portion or rust, and only the cans that have passed the leak inspection are put on the market. As a test method, after pressurizing a healthy drum can and a drum can to be tested to a constant pressure, visually measure the differential pressure between both drum cans with a differential pressure gauge. Was determined to have occurred.
【0004】[0004]
【発明が解決しようとする課題】しかしこのように差圧
により判定する方法では、漏洩により確実に差圧が発生
したのを見極めるまでに2〜3分以上を要し、計測時間
の短縮が望まれていた。また、このような検出は目視に
より行われており、自動化が強く要望されていた。
However, in the method of determining the pressure difference as described above, it takes two to three minutes or more to determine that the differential pressure has occurred due to the leakage, and it is desired to reduce the measurement time. Was rare. In addition, such detection is performed visually, and automation has been strongly desired.
【0005】本発明は上述の問題点に鑑みてなされたも
ので、ドラム缶の漏れを比較的迅速に自動的に検出する
差圧法によるドラム缶漏洩検査装置を提供することを目
的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a drum can leak inspection apparatus by a differential pressure method for automatically and relatively quickly detecting a drum can leak.
【0006】[0006]
【課題を解決するための手段】上記目的を達成するた
め、請求項1の発明では、漏洩のない基準ドラム缶と検
査対象のドラム缶とを結び中間に遮断弁を有する加圧管
と、この加圧管に加圧気体を供給する加圧ラインと、前
記加圧管の遮断弁の両端の差圧を計測する差圧計と、こ
の差圧計の計測値より検査対象のドラム缶の漏洩を検出
する判断装置と、を備え、前記判断装置は、差圧計測後
60秒経過したときの差圧が0.0006kgf/cm 2 以上となっ
たとき、検査対象ドラム缶は漏洩ありと判断する。
Means for Solving the Problems To achieve the above object,
Therefore, according to the first aspect of the present invention, a reference drum having no leakage is detected.
Pressurizing pipe connecting the drum to be inspected and having a shut-off valve in the middle
And a pressurizing line for supplying pressurized gas to the pressurizing tube, and
A differential pressure gauge that measures the differential pressure across the pressure valve shutoff valve;
Detects leaks from inspection target drums based on differential pressure gauge measurements
And a determining device for measuring the differential pressure after the differential pressure measurement.
The differential pressure when 60 seconds have passed is 0.0006kgf / cm TwoAbove
In this case, it is determined that the inspection target drum can has leaked.
【0007】差圧法により60秒以内で明確に検出でき
る最小のピンホールの径をテストにより確認したところ
60μmであることが分かった。この径以下では時間が
経過しても差圧は殆ど変化しないが、60μmの径のピ
ンホールがあると時間の経過とともに差圧は上昇し60
秒の時点でその差を計測できることが判明した。なお試
験圧として0.1〜0.3kgf/cm2 が加えられる。この
データにより差圧計測後60秒経過したときの差圧が0.
0006kgf/cm2 以上となったとき、検査対象ドラム缶は漏
洩ありと判断することが可能となった。
The minimum pinhole diameter which can be clearly detected within 60 seconds by the differential pressure method was confirmed by a test and found to be 60 μm. Below this diameter, the differential pressure hardly changes over time, but if there is a pinhole with a diameter of 60 μm, the differential pressure rises with the passage of time and increases.
It turned out that the difference could be measured in seconds. Note that a test pressure of 0.1 to 0.3 kgf / cm 2 is applied. According to this data, the differential pressure at 60 seconds after the differential pressure measurement was 0.
When it became 0006 kgf / cm 2 or more, it became possible to judge that the drum to be inspected had a leak.
【0008】[0008]
【発明の実施の形態】以下本発明の実施の形態について
図面を参照して説明する。図1は本実施の形態の差圧法
による漏洩検査装置の構成を示す図である。1は漏れの
ない基準ドラム缶であり、2は検査対象の検査ドラム缶
である。3は加圧管で中間に加圧管付電磁弁5を有し、
基準ドラム缶1と検査ドラム缶2に試験圧(0.1〜
0.3kgf/cm2 )を加圧する。4は加圧ラインで、加圧
管3に接続し加圧ライン付電磁弁6を有し、空気源7か
ら加圧空気を供給される。加圧管付電磁弁5の両側の圧
力をとるように差圧計8が接続され、差圧計8の出力は
コンピュータ9(判断装置)に接続されている。コンピ
ュータ9にはモニタ10が接続され、差圧の計測値や漏
れ判定結果が表示される。
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of a leakage inspection device using a differential pressure method according to the present embodiment. Reference numeral 1 denotes a reference drum without leakage, and reference numeral 2 denotes an inspection drum to be inspected. Reference numeral 3 denotes a pressurizing tube having a solenoid valve 5 with a pressurizing tube in the middle,
Test pressure (0.1 ~
0.3 kgf / cm 2 ) is applied. A pressurizing line 4 is connected to the pressurizing pipe 3 and has a solenoid valve 6 with a pressurizing line, and is supplied with pressurized air from an air source 7. A differential pressure gauge 8 is connected so as to take pressure on both sides of the solenoid valve 5 with a pressurized pipe, and an output of the differential pressure gauge 8 is connected to a computer 9 (judgment device). A monitor 10 is connected to the computer 9 and displays a measured value of the differential pressure and a leak determination result.
【0009】差圧計測は、先ず両電磁弁5,6を開と
し、空気源7より加圧空気を両ドラム缶1,2に供給
し、試験圧の範囲となったら先ず加圧ライン付電磁弁6
を閉じ、その後加圧管付電磁弁5を閉鎖する。電磁弁5
を閉鎖し放置すると、検査ドラム缶2に漏洩がある場
合、時間経過とともに差圧が発生する。電磁弁5閉鎖
後、60秒経過したときの差圧が0.0006kgf/cm2 以上と
なったとき、検査対象ドラム缶2を漏洩ありと判断す
る。
To measure the differential pressure, first, both solenoid valves 5 and 6 are opened, pressurized air is supplied from an air source 7 to both drums 1 and 2, and when the test pressure is within the range, a solenoid valve with a pressurizing line is first provided. 6
Is closed, and then the solenoid valve 5 with the pressure tube is closed. Solenoid valve 5
When the inspection drum 2 is leaked and closed, a differential pressure is generated over time. When the differential pressure at 60 seconds after the solenoid valve 5 is closed becomes 0.0006 kgf / cm 2 or more, it is determined that the inspection target drum 2 has leaked.
【0010】図2は判定基準を設定するため行った実験
結果を示す。ピンホール径を0μm,40μm,60μ
m,150μm,212μm,450μmとしたテスト
ドラム缶を用意し、これらの各テストドラム缶と基準ド
ラム缶とを図1の装置に装着して上述の計測方法で時間
経過毎のデータを求め図にしたものである。ピンホール
径が0μm,40μmの場合、時間が経過しても差圧の
変化が明確に現れないが、60μmとなると時間経過と
ともに差圧の変化が明確に現れてくる。このときの60
秒における差圧0.0006kgf/cm2 を判定基準として、ドラ
ム缶の漏れを検出する。
FIG. 2 shows the results of an experiment performed to set a criterion. 0μm, 40μm, 60μ pinhole diameter
Test drums of m, 150 μm, 212 μm, and 450 μm were prepared, and each of these test drums and the reference drum were mounted on the apparatus shown in FIG. is there. When the pinhole diameter is 0 μm or 40 μm, the change in the differential pressure does not clearly appear over time, but when the pinhole diameter is 60 μm, the change in the differential pressure clearly appears over time. 60 at this time
The leakage of the drum can is detected using the differential pressure of 0.0006 kgf / cm 2 in seconds as a criterion.
【0011】[0011]
【発明の効果】以上の説明から明らかなように、本発明
は、差圧法によりドラム缶の漏洩を検出する際の、短時
間で判定できる判定基準を設定したので、短時間に試験
ドラム缶の漏洩を検出することができる。また試験結果
はコンピュータにより行われるので、目視で行う場合に
比べて検査のばらつきがない。
As is apparent from the above description, according to the present invention, a criterion which can be determined in a short time when detecting the leakage of the drum by the differential pressure method is set. Can be detected. In addition, since the test results are performed by a computer, there is no variation in the inspection as compared with the case of performing the test visually.
【図面の簡単な説明】[Brief description of the drawings]
【図1】本実施の形態の装置全体の構成を示す図であ
る。
FIG. 1 is a diagram illustrating a configuration of an entire apparatus according to an embodiment.
【図2】漏洩の可否の判定基準を定めるためのテスト結
果を示す図である。
FIG. 2 is a diagram showing a test result for determining a criterion for determining whether leakage is possible.
【符号の説明】[Explanation of symbols]
1 基準ドラム缶 2 検査ドラム缶 3 加圧管 4 加圧ライン 5 加圧管付電磁弁 6 加圧ライン付電磁弁 7 空気源 8 差圧計 9 コンピュータ 10 モニタ REFERENCE SIGNS LIST 1 Reference drum can 2 Inspection drum can 3 Pressurizing pipe 4 Pressurizing line 5 Solenoid valve with pressurizing pipe 6 Solenoid valve with pressurizing line 7 Air source 8 Differential pressure gauge 9 Computer 10 Monitor

Claims (1)

    【特許請求の範囲】[Claims]
  1. 【請求項1】 漏洩のない基準ドラム缶と検査対象のド
    ラム缶とを結び中間に遮断弁を有する加圧管と、この加
    圧管に加圧気体を供給する加圧ラインと、前記加圧管の
    遮断弁の両端の差圧を計測する差圧計と、この差圧計の
    計測値より検査対象のドラム缶の漏洩を検出する判断装
    置と、を備え、 前記判断装置は、差圧計測後60秒経過したときの差圧
    が0.0006kgf/cm2 以上となったとき、検査対象ドラム缶
    は漏洩ありと判断することを特徴とする差圧法によるド
    ラム缶漏洩検査装置。
    1. A pressurizing pipe having a shut-off valve connected between a reference drum can having no leakage and a drum can to be inspected, a pressurizing line for supplying pressurized gas to the pressurizing pipe, and a shutoff valve of the pressurizing pipe. A differential pressure gauge that measures the differential pressure at both ends; and a determining device that detects leakage of the inspection target drum from the measured value of the differential pressure gauge. A drum pressure leak inspection device using a differential pressure method, which determines that a drum to be inspected has a leak when the pressure becomes 0.0006 kgf / cm 2 or more.
JP3931598A 1998-02-20 1998-02-20 Drum can leakage inspection device due to differential pressure method Pending JPH11237300A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3931598A JPH11237300A (en) 1998-02-20 1998-02-20 Drum can leakage inspection device due to differential pressure method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3931598A JPH11237300A (en) 1998-02-20 1998-02-20 Drum can leakage inspection device due to differential pressure method

Publications (1)

Publication Number Publication Date
JPH11237300A true JPH11237300A (en) 1999-08-31

Family

ID=12549687

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3931598A Pending JPH11237300A (en) 1998-02-20 1998-02-20 Drum can leakage inspection device due to differential pressure method

Country Status (1)

Country Link
JP (1) JPH11237300A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103630302A (en) * 2013-09-27 2014-03-12 杭州乔辉电子科技有限公司 Tester for testing pipeline volume through differential pressure method
CN104989948A (en) * 2015-06-15 2015-10-21 浙江信达可恩消防实业有限责任公司 Quantitative leakage detection device of cylinder group and method
CN106595988A (en) * 2016-12-27 2017-04-26 重庆智神科技有限公司 Pressure difference testing device for air tightness test system
CN108918051A (en) * 2018-09-08 2018-11-30 芜湖金光汽车配件有限责任公司 Automated detection method and device on a kind of production line

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103630302A (en) * 2013-09-27 2014-03-12 杭州乔辉电子科技有限公司 Tester for testing pipeline volume through differential pressure method
CN104989948A (en) * 2015-06-15 2015-10-21 浙江信达可恩消防实业有限责任公司 Quantitative leakage detection device of cylinder group and method
CN106595988A (en) * 2016-12-27 2017-04-26 重庆智神科技有限公司 Pressure difference testing device for air tightness test system
CN108918051A (en) * 2018-09-08 2018-11-30 芜湖金光汽车配件有限责任公司 Automated detection method and device on a kind of production line

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