JPH0142366B2 - - Google Patents
Info
- Publication number
- JPH0142366B2 JPH0142366B2 JP8686082A JP8686082A JPH0142366B2 JP H0142366 B2 JPH0142366 B2 JP H0142366B2 JP 8686082 A JP8686082 A JP 8686082A JP 8686082 A JP8686082 A JP 8686082A JP H0142366 B2 JPH0142366 B2 JP H0142366B2
- Authority
- JP
- Japan
- Prior art keywords
- joint
- sealing ring
- ring
- flange
- shaped
- 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
- 238000012360 testing method Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 21
- 239000012530 fluid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000013013 elastic material Substances 0.000 claims 1
- 238000010998 test method Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000002861 polymer material Substances 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
- G01M3/28—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
- G01M3/2861—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 for pipe sections by testing its exterior surface
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Description
【発明の詳細な説明】
この発明は、二つの配管を接合した場合、その
接合部の強度および漏れ試験を外側から出来るだ
け小容積にて行なう配管接合部試験装置およびそ
の試験方法に関するものである。[Detailed Description of the Invention] This invention relates to a pipe joint testing device and a testing method for testing the strength and leakage of the joint from the outside in as small a volume as possible when two pipes are joined. .
従来、配管ラインの一部が損傷し、その部分を
新管と取り替えて両端を接合する場合、または、
長尺の配管同志を真中で接合する場合において、
その接合部の強度および漏れ試験を行なう場合、
接合した配管のそれぞれの端部を盲蓋等で遮断し
て配管全体に内圧を掛けて試験を行なつていたも
のである。 Traditionally, when a part of a piping line is damaged and the damaged part is replaced with a new pipe and both ends are joined, or
When joining long pipes together in the middle,
When testing the joint for strength and leakage,
Tests were conducted by blocking each end of the joined pipes with blind lids, etc., and applying internal pressure to the entire pipe.
従つて、容積も膨大となり、わずかな圧力変化
を検知することは困難であり、また、長時間（た
とえば24時間）放置してやつと確認出来るような
次第で、その間、圧縮気体の温度も変化するた
め、温度と圧力を同時に測定しなければ、試験の
精度は期待出来ないものであり、また、試験に要
する時間、工数、経費も膨大となるものであつ
た。 Therefore, the volume becomes huge, making it difficult to detect even the slightest change in pressure.Also, if you leave it for a long time (for example, 24 hours) and can easily check it, the temperature of the compressed gas will also change during that time. Therefore, unless temperature and pressure are measured simultaneously, the accuracy of the test cannot be expected, and the time, man-hours, and expense required for the test are enormous.
因つて、発明者らは、最も作業性の容易な、且
つ、短時間に高精度の得られる試験方法を探究し
た結果、外側から接合部の全周面の狭小幅の限定
範囲において試験することが出来れば最も作業性
が容易であることに着目し、その条件に好適な装
置の構成とその試験方法を案出したものである。 Therefore, the inventors searched for a test method that was the easiest to work with and could provide high accuracy in a short time.The inventors found that the test method was to be tested from the outside in a narrow range of the entire circumference of the joint. Focusing on the fact that it would be the easiest to work with if possible, we devised a device configuration and testing method suitable for those conditions.
次に、この発明の試験装置並びにその試験方法
を、例示の図面に基づいて具体的に詳述する。 Next, the test device and test method of the present invention will be specifically explained in detail based on exemplary drawings.
第１図は、この発明の試験装置を配管接合部に
設定した状態を縦断面図にて示したもので、第２
図は、第１図の側面図を示したもので、フランジ
付きの二つ割りの輪状ケーシングが、フランジ部
のボルト締めによつて配管接合部に固定された状
態を示したものである。 FIG. 1 is a vertical cross-sectional view showing the test device of the present invention set at a pipe joint.
The figure shows a side view of FIG. 1, showing a state in which the flanged two-split annular casing is fixed to the piping joint by tightening bolts at the flange.
第３図は、二つ割りの輪状ケーシングのフラン
ジ部とその内面状態を示す拡大斜視図である。 FIG. 3 is an enlarged perspective view showing the flange portion of the two-split annular casing and its inner surface state.
図において、ａ，ｂは相互に接合する接合管
で、１は接合管の接合部である。２は、接合部１
をほぼ中央になるように、接合管ａ，ｂ上に固定
されて、環状中空部を形成するチヤンネル形断面
の二つ割りの輪状ケーシングで、端部にフランジ
部を形成して締め付け固定されるものである。 In the figure, a and b are joint pipes that are joined to each other, and 1 is a joint part of the joint pipes. 2 is the joint part 1
It is a ring-shaped casing with a channel-shaped cross section that is fixed in half on the joint pipes a and b so as to be approximately in the center, forming an annular hollow part, and is tightened and fixed by forming a flange part at the end. be.
詳細は、第２図、第３図において詳述する。 Details will be explained in detail in FIGS. 2 and 3.
３は、輪状ケーシング２の内面に沿接するゴム
状弾性体からなるシーリングリングで、両側部に
コ字形のシールリツプ３ａを有し、圧力下にて自
動封止作用をなすように形成するものである。こ
のシーリングリング３には、圧力空気を導入する
給気金具４を円周の一箇所に気密に取り付けられ
ており、中央には空気穴４ａが設けられている。
輪状ケーシング２の二つ割りの一方には、給気金
具４挿入用の嵌合穴５が設けられ、この嵌合穴５
に給気金具４を挿入して、ナツト６にて輪状ケー
シング２に固定する。Reference numeral 3 denotes a sealing ring made of a rubber-like elastic body that is in contact with the inner surface of the annular casing 2 , and has U-shaped sealing lips 3a on both sides, and is formed to perform an automatic sealing action under pressure. . An air supply fitting 4 for introducing pressurized air is airtightly attached to the sealing ring 3 at one point on the circumference, and an air hole 4a is provided in the center.
A fitting hole 5 for inserting the air supply fitting 4 is provided in one of the halves of the annular casing 2 .
Insert the air supply fitting 4 into the housing and fix it to the annular casing 2 with a nut 6.
この給気金具４を固定した輪状ケーシング２の
一方のフランジ部と他方のフランジ部とを締め付
けて、シーリングリング３の内部にテストスペー
ス部TSを気密に形成するものであり、この給気
金具４とコンプレツサ等の圧力流体の配管と連結
するためキヤツプナツト７が設けられ、配管は一
例を示したもので、９は圧力計、１０は連結管、
８は開閉弁である。 The test space TS is airtightly formed inside the sealing ring 3 by tightening one flange portion and the other flange portion of the annular casing 2 to which the air supply fitting 4 is fixed. A cap nut 7 is provided to connect the pipe to a pressure fluid pipe such as a compressor, and the pipe is shown as an example. 9 is a pressure gauge, 10 is a connecting pipe,
8 is an on-off valve.
次に、輪状ケーシング２について詳述する。 Next, the annular casing 2 will be explained in detail.
第２図は、接合管ａ側からの管軸方向の側面図
で示した二つ割りの輪状ケーシングで、ボルト１
２（図省略）で締め付けて、試験装置の外郭部
OBを形成した固定時の状態を示したものであ
る。図において、２ａ，２ｂはそれぞれのフラン
ジ部であるが、ゴム状弾性体からなるシーリング
リング３の機能を完全に発揮させるためには、二
つ割りの輪状ケーシング２のフランジ部間の内面
の間隔を閉鎖して内部を完全な輪状に形成する必
要がある。 Figure 2 shows the ring-shaped casing split in half, shown in a side view in the pipe axis direction from the joint pipe a side.
2 (not shown) and tighten the outer part of the test device.
This figure shows the state when the OB is formed and fixed. In the figure, 2a and 2b are respective flanges, but in order to fully demonstrate the function of the sealing ring 3 made of a rubber-like elastic body, the space between the inner surfaces of the flange parts of the two-split annular casing 2 must be closed. The inside must be shaped like a complete ring.
その理由は、管外径には許容公差が認められて
おるので、許容範囲の最小外径のときフランジ面
が密着してもそれより大きな外径のパイプのとき
はフランジ面は密着せず隙間が出来る。その隙間
にシーリングリング３が圧力によりはみ出さない
ようにするのが補足壁１１であり、補足壁の端部
と補足壁が挿入される嵌合凹部１３の根元はそれ
ぞれ鋭角にとがらせ、シールリング３が圧着され
ても応力集中がかかつて破損することのないよう
に配慮される。 The reason for this is that tolerances are allowed for the outside diameter of the pipe, so even if the flange surfaces are in close contact when the outside diameter is the minimum within the allowable range, when the outside diameter of the pipe is larger than that, the flange surfaces do not come into close contact and there is a gap. I can do it. The supplementary wall 11 prevents the sealing ring 3 from protruding into the gap due to pressure, and the ends of the supplementary wall and the base of the fitting recess 13 into which the supplementary wall is inserted are each sharpened at an acute angle, and the sealing ring Even if 3 is crimped, care is taken to prevent stress concentration from causing damage.
従つて、第３図の二つ割りの輪状ケーシング２
の拡大斜視図のフランジ部内面状態に示すよう
に、一方側のフランジ部２ａの内面側に、フラン
ジ面より円弧状に突出する補足壁１１を、埋め込
み、内面を同一面状に形成する。このフランジ部
と組み合わせる他方のフランジ部２ｂの内面側に
は、上記補足壁１１が嵌合して同一内面状態とな
るように、内面を削つて補足壁１１の嵌合凹部１
３を形成し、フランジ部の組み合わせによつて、
第２図の補足壁１１のように外側は離隔されてい
るが、内面の間隔を閉鎖した輪状に形成されるよ
うにするもので、１４は締め付け用のボルト穴で
ある。 Therefore, the two-split ring-shaped casing 2 in FIG.
As shown in the inner surface state of the flange portion in the enlarged perspective view, a supplementary wall 11 projecting in an arc shape from the flange surface is embedded in the inner surface side of the flange portion 2a on one side, and the inner surface is formed in the same plane. The inner surface of the other flange portion 2b to be combined with this flange portion is shaved to form a fitting recess 1 of the supplementary wall 11 so that the supplementary wall 11 is fitted into the same inner surface.
3, and by combining the flange parts,
Like the supplementary wall 11 in FIG. 2, the outside is spaced apart, but the inner surface is formed into a closed ring shape, and 14 is a bolt hole for tightening.
上記のようにして、この発明の配管接合部試験
装置は構成されるものである。 The pipe joint testing device of the present invention is constructed as described above.
この装置によつて、接合管の外側から、この発
明の配管接合部の漏れ並びに強度の試験を行なう
ものである。 This apparatus is used to test the leakage and strength of the piping joint of the present invention from the outside of the joint pipe.
その方法は、まず、ゴム又はプラスチツク等の
弾性高分子物質からなるゴム状弾性体のシーリン
グリング３を、接合管ａ，ｂの接合前に、どちら
か一方側に挿入して置くか、接合後に挿入出来る
場合は、接合後に挿入するようにし、接合部１を
ほぼ中央にして設定する。 The method is to first insert a rubber-like elastic sealing ring 3 made of an elastic polymer material such as rubber or plastic into either side of the joint pipes a and b before joining them, or to If it can be inserted, it should be inserted after bonding, and the bonding section 1 should be placed approximately in the center.
次に、シーリングリング３の給気金具４を、二
つ割りの輪状ケーシング２の一方の嵌合穴５に挿
入して、ナツト６にて固定し、他方の二つ割りの
輪状ケーシング２を組み合わせて、それらのフラ
ンジ部２ａ，２ｂをボルト１２で締め付けて外郭
部OBを形成し、まず、開閉弁８を開いて、圧力
空気を、テストスペース部TSに導入、所要の圧
力に保持し、開閉弁８を閉じる。 Next, the air supply fitting 4 of the sealing ring 3 is inserted into the fitting hole 5 of one of the two halves of the annular casing 2 , fixed with a nut 6, and the other halves of the annular casing 2 are combined. The flange parts 2a and 2b are tightened with bolts 12 to form the outer shell part OB. First, open the on-off valve 8, introduce pressurized air into the test space part TS, maintain it at the required pressure, and close the on-off valve 8. .
接合部の強度および漏れ等の異状がなければ、
圧力計９は所定の試験圧力を示しているが、破損
したときはもち論、きわめてわずかな接合部の漏
れがあつても、テストスペース部TSの体積はご
く小容積であるため、すみやかに圧力は低下し異
状が検出される。 If there is no abnormality such as the strength of the joint or leakage,
The pressure gauge 9 indicates the predetermined test pressure, but in the event of a breakage, even if there is a very small leakage from the joint, the test space TS has a very small volume, so the pressure will be immediately reduced. decreases and abnormalities are detected.
以上説明のとおり、この発明の装置並びに試験
方法は、配管の外部から行なうものであり、且
つ、接合部の全周面に対する狭小幅の限定範囲に
おいて行なうものであるため、作業がきわめて容
易であり、高精度と迅速に結果が得られるため、
工数、時間、経費等のすべてを大きく縮小するこ
とが出来るばかりでなく、装置のシーリングリン
グの製作も、板状体から容易に得られるため、装
置の製作も容易である。 As explained above, the apparatus and testing method of the present invention are extremely easy to operate because they are carried out from outside the piping and in a narrow and limited area around the entire circumference of the joint. , with high precision and rapid results.
Not only can the man-hours, time, expenses, etc. all be greatly reduced, but the sealing ring for the device can also be easily obtained from a plate-shaped body, making it easy to manufacture the device.
第１図は、接合管上に設定したこの発明の配管
接合部試験装置の縦断面図、第２図は、同側面
図、第３図は、上記装置の外郭部を形成する輪状
ケーシングのフランジ部内面状態を示めす拡大斜
視図である。
ａ，ｂ……接合管、１……接合部、OB……外
郭部、２……輪状ケーシング、２ａ，２ｂ……フ
ランジ部、３……シーリングリング、３ａ……シ
ールリツプ、４……給気金具、４ａ……空気穴、
５……嵌合穴、１１……補足壁、１３……嵌合凹
部、TS……テストスペース部。
FIG. 1 is a longitudinal cross-sectional view of a pipe joint test device of the present invention set on a joint pipe, FIG. 2 is a side view of the same, and FIG. 3 is a flange of an annular casing forming the outer part of the device. FIG. 3 is an enlarged perspective view showing the inner surface state of the part. a, b...joint pipe, 1...joint part, OB...outer part, 2 ...annular casing, 2a, 2b...flange part, 3 ...sealing ring, 3a...seal lip, 4 ...air supply Metal fittings, 4a...air hole,
5... Fitting hole, 11... Supplementary wall, 13... Fitting recess, TS... Test space part.
Claims (1)
を有する二つ割りの輪状ケーシングの一方のフラ
ンジ部内面側に、フランジ面より円弧状に突出す
る補足壁を内面が同一面状となるように埋め込
み、他方のフランジ部内面側に、上記補足壁の嵌
合凹部を形成し、その両者の組み合わせによつ
て、フランジ部間の内面の間隔を閉鎖した、輪状
に形成した外郭部を構成し、その内面に沿接する
ゴム状弾性体からなる両側部にコ字形のシールリ
ツプを有するシーリングリングを設け、このシー
リングに設けられた給気金具を上記外郭部の嵌合
穴に挿入固定するようにし、接合管の外側に設定
されたとき、シールリングと接合管との間にテス
トスペース部を形成するようにした外部からの配
管接合部試験装置。 ２ ゴム状弾性体から形成された両側部にコ字形
のシールリツプを有するシーリングリングを、接
合管の接合部がほぼ中央になるように接合管に挿
入設定し、そのシーリングリングの外側に、二つ
割りの輪状ケーシングの一方側のフランジ部内面
側に内面が同一面になるように埋設されたフラン
ジ面より円弧状に突出し、他方のフランジ部の内
面側の嵌合凹部に嵌合する補足壁によつてフラン
ジ部のシーリングリングの膨出を防止するように
構成した輪状ケーシングを沿接し、該輪状ケーシ
ングの嵌合穴に、上記シーリングリングの給気金
具を挿入固定し、輪状ケーシングのフランジ部を
締め付けて接合管上に固定し、シーリングリング
内のテストスペース部に所定の圧力流体を導入し
て接合部の強度および漏れ試験を行なうことを特
徴とする外部からの配管接合部試験方法。[Claims] 1. A supplementary wall that protrudes in an arc shape from the flange surface is provided on the inner surface of one flange of a two-split annular casing having a channel-shaped cross section, which is set on the outside of the joint pipe. A fitting recess for the supplementary wall is formed on the inner surface of the other flange part, and the combination of the two forms a ring-shaped outer shell part that closes the gap between the inner surfaces of the flange parts. A sealing ring having a U-shaped sealing lip is provided on both sides made of a rubber-like elastic body along the inner surface, and an air supply fitting provided on this sealing is inserted and fixed into the fitting hole of the outer shell. An external piping joint test device that, when set outside the joint pipe, forms a test space between the seal ring and the joint pipe. 2. Insert a sealing ring made of rubber-like elastic material and having U-shaped seal lips on both sides into the joint pipe so that the joint part of the joint pipe is approximately in the center, and attach a two-part sealing ring to the outside of the sealing ring. By means of a supplementary wall that protrudes in an arc shape from the flange surface buried in the inner surface of the flange portion on one side of the annular casing so that the inner surfaces are flush with each other, and that fits into the fitting recess on the inner surface side of the other flange portion. A ring-shaped casing configured to prevent the sealing ring of the flange portion from bulging is attached, the air supply fitting of the sealing ring is inserted and fixed into the fitting hole of the ring-shaped casing, and the flange portion of the ring-shaped casing is tightened. A method for testing a pipe joint from the outside, which comprises fixing the joint on a joint pipe and introducing a predetermined pressure fluid into a test space inside a sealing ring to test the strength and leakage of the joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8686082A JPS58202854A (en) | 1982-05-22 | 1982-05-22 | Apparatus and method for testing joint of piping from outside |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8686082A JPS58202854A (en) | 1982-05-22 | 1982-05-22 | Apparatus and method for testing joint of piping from outside |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58202854A JPS58202854A (en) | 1983-11-26 |
| JPH0142366B2 true JPH0142366B2 (en) | 1989-09-12 |
Family
ID=13898561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8686082A Granted JPS58202854A (en) | 1982-05-22 | 1982-05-22 | Apparatus and method for testing joint of piping from outside |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58202854A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03212660A (en) * | 1990-01-18 | 1991-09-18 | Fujitsu Ltd | Image forming device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5263362A (en) * | 1992-06-10 | 1993-11-23 | Fluoroware, Inc. | Weld test tool |
| CN102759432A (en) * | 2012-07-31 | 2012-10-31 | 东莞地龙纸业有限公司 | Leak detector of vacuum system |
-
1982
- 1982-05-22 JP JP8686082A patent/JPS58202854A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03212660A (en) * | 1990-01-18 | 1991-09-18 | Fujitsu Ltd | Image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58202854A (en) | 1983-11-26 |
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