JPS5975132A - Testing method of tightness of closed container - Google Patents
Testing method of tightness of closed containerInfo
- Publication number
- JPS5975132A JPS5975132A JP18558582A JP18558582A JPS5975132A JP S5975132 A JPS5975132 A JP S5975132A JP 18558582 A JP18558582 A JP 18558582A JP 18558582 A JP18558582 A JP 18558582A JP S5975132 A JPS5975132 A JP S5975132A
- Authority
- JP
- Japan
- Prior art keywords
- test
- flange
- outside
- packings
- ring
- 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
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
- G01M3/28—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 pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—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 pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は複数のケーシングを結合して構成され、その内
側と外側との間に圧力差の存在する密閉容器の結合部の
密封性の試験方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for testing the sealability of a joint of a closed container that is constructed by joining a plurality of casings and in which a pressure difference exists between the inside and outside of the container.
この種の密閉容器に属するものとしてパルプ形チューブ
ラ水車・発電機のパルプが知られている。Pulp for pulp-type tubular water turbines and generators is known as belonging to this type of closed container.
この場合のパルプは常に水中に位置する大形の薄肉外圧
容器と考えることができ、その外側には絶えず水圧が作
用するからパルプ内部への漏水防止の対策を講すること
が重要な課題である。通常輸送上の制限などの理由によ
り軸方向に若干側のケーシングに分割されるパルプは、
現地においてパツキンとボルトを用いて各ゲージングの
結合部を強固に締め付けて組立てられることになる。し
たがって完成後のパルプの水密性を確認しておくために
、前記結合部における水漏れの可能性の有無を試験する
ことが必要になる。In this case, the pulp can be thought of as a large, thin-walled external pressure vessel that is always submerged in water, and water pressure is constantly acting on the outside of the container, so it is important to take measures to prevent water from leaking into the inside of the pulp. . Pulp is usually divided into casings slightly axially apart due to transport restrictions.
It will be assembled on site by firmly tightening the joints of each gauging using gaskets and bolts. Therefore, in order to confirm the watertightness of the completed pulp, it is necessary to test for the possibility of water leakage at the joints.
在来この種の密封性の試験方法としては組立てられたパ
ルプの内部に適当な試験用媒質を用いて所定の圧力をか
げ結合部における前記媒質の漏れの有無を試験すること
が知られている。しかしながらこの方法には次の如き欠
点が伴なう。即ち密封性の試験中媒質によるパルプの内
圧を所定の値に保持するために点検シャフト、配線ある
いは配管の接合部の如き本来直接的あるいは間接的に外
部に対して導通されている部分を完全に密閉する必要が
あり、この密閉作業がはなはだしく煩雑で工数を要し必
要以上の経費を費やす原因となる。Conventionally, this type of sealing test method is known to use a suitable test medium inside the assembled pulp, apply a predetermined pressure, and test for leakage of the medium at the joint. . However, this method has the following drawbacks. That is, in order to maintain the internal pressure of the pulp due to the medium at a predetermined value during the sealability test, parts that are originally connected directly or indirectly to the outside, such as inspection shafts, wiring, or piping joints, are completely removed. It is necessary to seal it, and this sealing work is extremely complicated and requires a lot of man-hours, resulting in unnecessary expense.
更に試験されるパルプの内容積が比較的に大であるから
試験用の圧力涼としての加圧装置が大規模なものになら
ざるを得す、この而からしても不経済であることを免れ
ない。Furthermore, since the internal volume of the pulp to be tested is relatively large, the pressurizing equipment for pressure cooling for testing must be large-scale, which is also uneconomical. I can't escape it.
本発明は在来の密封性の試験方法における上記の如き欠
点に鑑み、非常に簡単な手段でしかも確実に結合部にお
ける密封性を確認することのできる試験方法を提供する
ことを目的とする。SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks of conventional sealing test methods, it is an object of the present invention to provide a test method that can reliably confirm sealing at a joint using very simple means.
前記の目的は本発明によると複数のケーシングをフラン
ジによって結合し、前記7ランジには少なくとも径のこ
となる2個のリング状のパツキンをそなえて密閉し、円
筒状に形成されて内側と外側とに圧力差の存在する密閉
容器において、前記7ランジの一方の7ランジの一方の
7ランジの接合面の前記径のことなるパツキンとパツキ
ンとの間に該パツキンと同心のリング状の溝をもうけ、
かつ前記7ランジの内部を通って線溝と外部とを連通ず
る複数の孔をもうけ、常時は線孔の外部への開口をふさ
ぎ、試験時には線孔の開口から加圧装置によって適当な
試験用媒質を加圧して洩れ試験を行なうことによって達
成される。According to the present invention, the above object is to connect a plurality of casings by a flange, and the seven flange is provided with at least two ring-shaped packings of different diameters for sealing, and is formed into a cylindrical shape and has an inner and an outer part. In an airtight container in which a pressure difference exists between the seals, a ring-shaped groove concentric with the seal is provided between the seals having different diameters on the joint surfaces of one of the seven flange and the seal. ,
In addition, a plurality of holes are formed through the inside of the seven flange to communicate the wire groove with the outside, and the opening of the wire hole to the outside is normally closed, and during testing, a pressure device is used to open the wire hole from the opening of the wire hole. This is accomplished by pressurizing the medium and performing a leak test.
次に図面に表わされた実施例にもとづいてこの発明の詳
細な説明する。Next, the present invention will be described in detail based on embodiments shown in the drawings.
第1図においてパルプ形チューブラ水車・発電機のパル
プは発電機の固定子枠1、トップカバー2、並びにステ
ーベーン303個のケーシングから構成される。これら
のケーシングを相互に結合するために固定子枠1には固
定子枠の結合用7ランジ4及び41が、またトップカバ
ーにはトップカバーの結合用7ランジ5が、更にステー
ベーン3にはステーベーンの結合用フランジ6がそれぞ
れ設けられる。固定子枠1とトップカバー2並びに固定
子枠1とステーベン3との結合部においては第2図及び
第3図の部分拡大図に示す如くに、固定子枠の結合用7
ランジ4及び41それぞれの接合面にリング状の径のこ
となるパツキン8及び9が共に固定子枠の結合用フラン
ジ4及び41の内面と同心に配置され、固定子枠の結合
用フランジ4とトップカバーの7ランジ5並びに固定子
枠の結合用フランジ41とステーベーンの7ランジ6と
が何れもパツキン8及び9を圧して相互にボルト7によ
って強[ff1lC締め合わされ密閉容器としてのパル
プが構成される。更に同定子枠結合用のフランジ4及び
41の接合面にはパツキン8と9との間に位置し同様に
7ランジの内面と同心の密掴性を試験するためのリング
状溝lOが設けられ、併せてリング状溝10を固定子枠
の結合用7ランジ4及び41の内面を介して固定子枠1
の内部に吻、通する複数の孔11が固定子枠の結合用7
ランジ4及び410本体内に半径方向にうがたれる。孔
11は平常は栓12によって閉そくされている。In FIG. 1, the pulp of the pulp-type tubular water turbine/generator is composed of a stator frame 1, a top cover 2, and a casing of 303 stay vanes. In order to connect these casings to each other, the stator frame 1 has 7 flange 4 and 41 for connecting the stator frame, the top cover has 7 langes 5 for connecting the top cover, and the stay vane 3 has a stay vane. A connecting flange 6 is provided, respectively. At the joints between the stator frame 1 and the top cover 2 and between the stator frame 1 and the stator frame 3, as shown in the partially enlarged views of FIGS. 2 and 3, the stator frame joints 7 are
Ring-shaped packings 8 and 9 of different diameters are arranged on the joint surfaces of the flange 4 and 41, respectively, and are arranged concentrically with the inner surfaces of the joint flanges 4 and 41 of the stator frame, and the joint flange 4 and the top of the stator frame The 7 langes 5 of the cover, the connecting flange 41 of the stator frame, and the 7 langes 6 of the stay vane all press the packings 8 and 9 and are strongly tightened with the bolts 7 to form the pulp as a sealed container. . Furthermore, a ring-shaped groove lO is provided on the joint surface of the flanges 4 and 41 for connecting the identifier frame, which is located between the seals 8 and 9 and is also concentric with the inner surface of the 7 flange to test the tight gripping property. In addition, the ring-shaped groove 10 is connected to the stator frame 1 through the inner surface of the 7 flange 4 and 41 for connecting the stator frame.
A plurality of holes 11 are inserted into the inside of the stator frame 7 for connecting the stator frame.
Lunges 4 and 410 hang radially into the body. The hole 11 is normally closed by a plug 12.
固定子枠1、トップカバー2並びにステーベーン3から
なるパルプの密封性の試験は、栓12を取り外して孔1
1に別置された加圧装置(図示せず)を接続し、所定の
圧力を有する試験用媒質を孔の内部に圧入し、7ランジ
接合面からの媒質の漏れ(5)
の有無によって極めて簡単かつ確実に実施することがで
き、しかも所要の試験用媒質は少量ですむから加圧装置
としては特別に容量の大なるものを必要としない。The sealing performance of the pulp consisting of the stator frame 1, top cover 2, and stay vane 3 was tested by removing the plug 12 and opening the hole 1.
Connect a pressurizing device (not shown) installed separately to 1, pressurize the test medium at a predetermined pressure into the hole, and determine whether or not there is leakage of the medium from the 7-flange joint surface (5). It can be carried out easily and reliably, and only a small amount of test medium is required, so a pressurizing device with a particularly large capacity is not required.
前記の如く密封性の試験用検査溝10を間にして同心状
にパツキン8及び9が設ゆられるから、一方のパツキン
を他方のパツキンのバックアップに利用するのが良い。As mentioned above, since the gaskets 8 and 9 are arranged concentrically with the sealing test groove 10 in between, it is preferable to use one gasket as a backup for the other gasket.
更に例えば外圧を受けるパルプの如き密閉容器において
パツキン8の密封性が損なわれバックアップとしてのパ
ツキン9の密封性に不安が伴なう場合にも、トップカバ
ーあるいはステーベーンを取り外すことなく孔11を通
してリング状溝10に合成樹脂を注入することによって
容易にフランジ接合面のシールを施すことができる利点
もある。Furthermore, if the sealing performance of the packing 8 is impaired in a sealed container such as pulp that is subjected to external pressure, and there is concern about the sealing performance of the packing 9 as a backup, the ring-shaped seal can be inserted through the hole 11 without removing the top cover or stay vane. Another advantage is that the flange joint surface can be easily sealed by injecting synthetic resin into the groove 10.
本発明が前記のパルプ形チューブラ水車・発電機のパル
プの如く外部から高い水圧を受ける密閉容器に限られず
、一般に複数個のケーシングから形成され内側と外側と
の間に圧力差の存在する密閉容器全般の接合部の密封性
を試験するのに有効(6)
であることは論するまでもない。The present invention is not limited to closed containers that receive high water pressure from the outside, such as the pulp of the above-mentioned pulp type tubular water turbine/generator, but is generally a closed container that is formed from a plurality of casings and has a pressure difference between the inside and outside. Needless to say, it is effective (6) for testing the sealing properties of joints in general.
本発明は以上に説明した如く複数のケーシングをフラン
ジによって結合し、前記フランジには少なくとも径のこ
となる2個のリング状のパツキンをそなえて密閉し、円
筒状に形成されて内側と外側とに圧力差の存在する密閉
容器において、前記フランジの一方のフランジの汲合面
の前自己径のことなるパツキンとパツキンとの間に該パ
ツキンと同心のリング状の溝をもうけ、かつ前記7ラン
ジの内部を辿って該沁と外部どを連通する被数の孔をも
うけ、常時は線孔の外部への開口をふさぎ、試験時には
線孔の開口から加圧装置によって適当な試験用媒勿を加
圧して洩れ試駅を行なうことによって、フランジ面から
の媒質の洩わの肩無により棲めて簡単かつ確実にフラン
ジ結合部の密制性の試験を実施ゴることかでき、しかも
所要の試験用媒質は少量ですむから加圧装置として喝別
に大容量のものを必要とせず、更に密封用パツキンの密
封性が損なわれた場合に前記の孔を通してリング状の溝
に合成樹脂を注入することによって、密閉容器を解体し
ないでも容易に7ランジ接合面のシールを施すことがで
きる効果がある。As explained above, the present invention connects a plurality of casings by a flange, and the flange is provided with at least two ring-shaped packings of different diameters to seal the casing, and the casing is formed into a cylindrical shape and has an inner and an outer part. In an airtight container where a pressure difference exists, a ring-shaped groove is provided between the packings having different diameters at the front of the fitting surface of one of the flanges, and a ring-shaped groove concentric with the packing is formed, and A number of holes are made along the inside of the wire hole to communicate with the outside, and the opening of the wire hole to the outside is always closed, and during testing, a suitable test medium is applied from the opening of the wire hole using a pressurizing device. By performing a leakage test by applying pressure, it is possible to easily and reliably test the tightness of the flange joint, since there is no leakage of the medium from the flange surface, and the required test can be carried out easily. Since only a small amount of the medium is required, there is no need for a pressurizing device with a large capacity.Furthermore, if the sealing performance of the sealing gasket is impaired, synthetic resin can be injected into the ring-shaped groove through the hole. This has the effect that the seven-lunge joint surface can be easily sealed without dismantling the closed container.
第1図は本発明の密閉容器(バルブ形チューブラ水車発
電機のメルノ)の側方断面の概略図、第2図は第1図の
密閉容器の■−■方向に見た横断面の概略図、更に第3
図は第2図の横断面図においてl−1方向に見たフラン
ジ結合部の部分拡大図を表わす。
1・・・固定子枠、2・・・トップカバー、3・・・ス
テーベーン、4.41・・・固定子枠の結合用フランジ
、5・・・トップカバーの結合用フランジ、6・・・ス
テーベーンの結合用7ランジ、 10・・・リング状溝
、11・・・孔。
才1 図
20
73 口Fig. 1 is a schematic diagram of a side cross section of the sealed container of the present invention (merno of a valve type tubular water turbine generator), and Fig. 2 is a schematic diagram of a cross section of the sealed container of Fig. 1, viewed in the ■-■ direction. , and also the third
The figure represents a partially enlarged view of the flange joint section viewed in the l-1 direction in the cross-sectional view of FIG. 2. DESCRIPTION OF SYMBOLS 1... Stator frame, 2... Top cover, 3... Stay vane, 4.41... Stator frame coupling flange, 5... Top cover coupling flange, 6... 7 langes for connecting stay vanes, 10...ring-shaped groove, 11...hole. 1 Figure 20 73 Mouth
Claims (1)
7ランジには少なくとも径のことなる2個のリング状の
パツキンをそなえて密閉し、円筒状に形成されて内側と
外側とに圧力差の存在する密閉容器において、前記フラ
ンジの一方のフランジの接合面の前記径のことなるパツ
キンとパツキンとの間に該パツキンと同心のリング状の
溝をもうけ、かつ前記7ランジの内部を通って線溝と外
部とを連通ずる複数の孔をもうけ、常時は線孔の外部へ
の開口をふさぎ、試験時には線孔の開口から加圧装置に
よって適当な試験用媒質を加圧して洩れ試験を行なうこ
とを特徴とする密閉容器の密封性の試験方法。1) The casing is connected by a plurality of flanges, and the seven flange is provided with at least two ring-shaped gaskets of different diameters for sealing, and is formed into a cylindrical shape so that there is a pressure difference between the inside and outside. In the airtight container, a ring-shaped groove is provided between the packings having different diameters on the joining surface of one of the flanges, and a ring-shaped groove concentric with the packing is provided, and a line groove is formed through the inside of the seven flange. It has multiple holes that communicate with the outside, and the opening of the wire hole to the outside is normally closed, and during testing, a suitable test medium is pressurized from the opening of the wire hole using a pressurizing device to perform a leakage test. Test method for sealing of airtight containers.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18558582A JPS5975132A (en) | 1982-10-22 | 1982-10-22 | Testing method of tightness of closed container |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP18558582A JPS5975132A (en) | 1982-10-22 | 1982-10-22 | Testing method of tightness of closed container |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5975132A true JPS5975132A (en) | 1984-04-27 |
Family
ID=16173375
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP18558582A Pending JPS5975132A (en) | 1982-10-22 | 1982-10-22 | Testing method of tightness of closed container |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5975132A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62166428U (en) * | 1986-04-09 | 1987-10-22 | ||
CN109781364A (en) * | 2019-03-28 | 2019-05-21 | 中国飞机强度研究所 | Gas leak detection device and method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5241883A (en) * | 1975-09-29 | 1977-03-31 | Sumitomo Electric Ind Ltd | Bobin separation arrangment apparatus |
JPS52134790A (en) * | 1976-05-06 | 1977-11-11 | Fuji Electric Co Ltd | Measuring method for seal leakage ratio |
-
1982
- 1982-10-22 JP JP18558582A patent/JPS5975132A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5241883A (en) * | 1975-09-29 | 1977-03-31 | Sumitomo Electric Ind Ltd | Bobin separation arrangment apparatus |
JPS52134790A (en) * | 1976-05-06 | 1977-11-11 | Fuji Electric Co Ltd | Measuring method for seal leakage ratio |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62166428U (en) * | 1986-04-09 | 1987-10-22 | ||
CN109781364A (en) * | 2019-03-28 | 2019-05-21 | 中国飞机强度研究所 | Gas leak detection device and method |
CN109781364B (en) * | 2019-03-28 | 2021-01-19 | 中国飞机强度研究所 | Air leakage detection device and method |
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