JPH11207485A - Air tight testing device for welding plug - Google Patents
Air tight testing device for welding plugInfo
- Publication number
- JPH11207485A JPH11207485A JP1186198A JP1186198A JPH11207485A JP H11207485 A JPH11207485 A JP H11207485A JP 1186198 A JP1186198 A JP 1186198A JP 1186198 A JP1186198 A JP 1186198A JP H11207485 A JPH11207485 A JP H11207485A
- Authority
- JP
- Japan
- Prior art keywords
- plug
- socket
- welded
- plug cylinder
- screwed
- 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.)
- Granted
Links
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、ノーブロー工法に
おいて、接続した継手を閉鎖するフランジ平板の気密試
験を行った後、この気密装置に使用したガス通路を閉鎖
する溶接部の気密試験装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an airtightness test device for a welded portion for closing a gas passage used in a gastightness device after performing an airtightness test on a flange plate for closing a connected joint in a no-blow method.
【0002】[0002]
【従来の技術】ノーブロー工法は、配管内の流れを止め
ずに工事が可能な工法である。前記ノーブロー工法にお
いては、図5に示すように、本管50に継手51を溶接
した後、継手51にゲートバルブ52を取付け、ゲート
バルブ52の上に穿孔機53をセットして、本管50を
穿孔する。2. Description of the Related Art The no-blow method is a method in which construction can be performed without stopping the flow in a pipe. In the no-blow method, as shown in FIG. 5, after welding a joint 51 to a main pipe 50, a gate valve 52 is attached to the joint 51, and a drilling machine 53 is set on the gate valve 52. Perforate.
【0003】そして、ゲートバルブ52から穿孔機53
を取り外して、ゲートバルブ52に図示してない遮断機
等を取付けて、本管50内の遮断等を行う。そして、本
管50の遮断等を行う工事が終わった後は、ゲートバル
ブ52から遮断機等を取り外し、ゲートバルブ52に、
栓装着具69を取付け、継手51に、Oリング54の取
付けられた栓55を、操作棒70を使って、図6に示す
ように、取付ける。[0003] Then, the drilling machine 53
Is removed, and a circuit breaker or the like (not shown) is attached to the gate valve 52 to block the inside of the main pipe 50 or the like. After the work for shutting off the main pipe 50 is completed, the shutoff device and the like are removed from the gate valve 52, and the gate valve 52 is
The plug mounting tool 69 is attached, and the plug 55 to which the O-ring 54 is attached is attached to the joint 51 using the operating rod 70 as shown in FIG.
【0004】そして、前記Oリング54は、継手51の
内面と接触することにより、本管50内の流体が、継手
51から漏洩するのを防ぐ一次シールの役割をする。そ
して、次に継手51からゲートバルブ52を除くと共
に、栓55から操作棒70を取り外し、図7に示すよう
に、継手51の上にフランジ平板56を、パッキン57
を介して、図示してないボルトで締結する。[0004] The O-ring 54 serves as a primary seal that prevents the fluid in the main pipe 50 from leaking from the joint 51 by contacting the inner surface of the joint 51. Then, the gate valve 52 is removed from the joint 51, and the operating rod 70 is removed from the stopper 55. As shown in FIG.
Through the bolts (not shown).
【0005】そして、このフランジ平板56には、ソケ
ット58(JIS B2302)を溶接して取付けてあ
り、このソケット58、ガス通路72、バルブ71を使
って、外部よりN2ガスを空間Aに封入して、ブルドン
管式の圧力計66を使い、パッキン57のシール性を検
査する(図7)。A socket 58 (JIS B2302) is attached to the flange plate 56 by welding, and N 2 gas is externally sealed in the space A by using the socket 58, the gas passage 72, and the valve 71. Then, the sealability of the packing 57 is inspected using a Bourdon tube pressure gauge 66 (FIG. 7).
【0006】そして、パッキン57のシール性を確認し
た後は、ソケット58の雌ねじから加圧配管59を除
き、図8に示すように、ソケット58に嵌合するプラグ
60をねじ結合し、よりシール性を高めるために、ソケ
ット58とプラグ60を溶接61で結合する。After confirming the sealing performance of the packing 57, the pressurizing pipe 59 is removed from the female screw of the socket 58, and a plug 60 fitted to the socket 58 is screwed as shown in FIG. The socket 58 and the plug 60 are connected by welding 61 to enhance the performance.
【0007】そして、この溶接61の気密試験を行うの
に、従来は以下述べる手段で行っていた。そこで、ま
ず、図9に前記気密試験に使用した装置を断面で示す
が、この装置は、ソケット58とプラグ60、及びその
両者の溶接61した部分を包むようにして、加圧治具6
2をフランジ平板56の上にセットしている。[0007] An airtightness test of the weld 61 is conventionally performed by the following means. First, FIG. 9 shows a cross section of the device used for the airtightness test. This device wraps the socket 58, the plug 60, and the welded portion 61 of both, and presses the pressing jig 6
2 is set on the flange plate 56.
【0008】そして、加圧治具62は下面側の中央部に
設けた空間Bに、外部より圧力を負荷できるようにする
為に、フランジ平板56との間に、Oリング63を介在
させてシールしている。The pressing jig 62 is provided with an O-ring 63 interposed between the pressing jig 62 and the flange flat plate 56 so that a pressure can be externally applied to a space B provided at the center on the lower surface side. Sealed.
【0009】そして、前記加圧治具62は、空間Bに圧
力を作用させたときに、移動しないように、溝形鋼で形
成した固定部64を溶接68して取付け、この固定部6
4は、ターンバックル65で継手51にしっかり固定し
ている。The pressing jig 62 is attached by welding 68 to a fixing portion 64 made of a channel steel so that it does not move when pressure is applied to the space B.
4 is firmly fixed to the joint 51 by a turnbuckle 65.
【0010】そして、前記加圧治具62により、外部よ
りN2ガスを空間Bに作用させ、ブルドン管式の圧力計
66の変化により、溶接61の部分の気密試験を行って
いた。The pressurizing jig 62 causes N 2 gas to act on the space B from the outside, and the airtightness test of the weld 61 is performed by changing the pressure gauge 66 of the Bourdon tube type.
【0011】そして、本管50内の流体圧力によって、
溶接61の部分の気密試験を、石鹸液等を使って行うこ
とが考えられるが、継手51が栓55のOリング54
で、圧力遮断されているので、前記気密試験は実施でき
ない。[0011] Then, by the fluid pressure in the main pipe 50,
It is conceivable that the airtightness test of the portion of the weld 61 is performed using a soap solution or the like.
Since the pressure is shut off, the airtight test cannot be performed.
【0012】[0012]
【発明が解決しようとする課題】前記した従来のフラン
ジ平板56に溶接して取付けたソケット58に、ねじ結
合したプラグ60の溶接61した部分の気密試験装置
は、フランジ平板56の表面(Oリング63と接触する
面)を、機械加工する必要があった。An airtightness test apparatus for a welded portion 61 of a plug 60 which is screwed to a socket 58 which is welded and attached to the above-mentioned conventional flange plate 56 is provided on the surface (O-ring) of the flange plate 56. 63) which had to be machined.
【0013】すなわち、フランジ平板56のOリング6
3と接触する部分は、シール性を確保するために、市販
のフランジ平板56の粗面を機械加工して、表面を精密
にする必要があった。That is, the O-ring 6 of the flange plate 56
In order to ensure the sealing performance, the rough surface of the commercially available flange flat plate 56 needs to be machined to make the surface in contact with the portion 3 precise.
【0014】そして、機械加工の後は、ペンキを塗ると
表面に凹凸が生じるので、ペンキ等で塗装せずに、機械
加工した面に、ストリップペイントを塗り、フランジ平
板56の上に加圧治具62を載せるとき、そのストリッ
プペイントを剥離していた。[0014] After the machining, the surface becomes uneven when paint is applied. Therefore, instead of painting with paint or the like, strip paint is applied to the machined surface, and the flange plate 56 is pressed and cured. When the tool 62 was placed, the strip paint was peeled off.
【0015】また、Oリング63でシールするために、
フランジ平板56の表面にグリースを塗布し、フランジ
平板56とOリング63を良くなじませて、シール性を
確保した。In order to seal with the O-ring 63,
Grease was applied to the surface of the flange flat plate 56, and the flange flat plate 56 and the O-ring 63 were well blended to ensure sealing performance.
【0016】そのため、気密試験の完了後、塗布したグ
リースが、その後の防食施工に悪影響を及ぼさないよう
に、グリースをシンナー等の有機溶剤で除去しなければ
ならなかった。Therefore, after the completion of the airtight test, the grease must be removed with an organic solvent such as a thinner so that the applied grease does not adversely affect the subsequent anticorrosion work.
【0017】そして、継手51は、本管50の口径の大
小によって、大きさが異なり、そして、それに伴ってソ
ケット58の呼び口径が異なっている。そこで、加圧治
具62は、継手51の口径毎に寸法が異なり、全ての継
手51の口径毎に、加圧治具62を製作し、所有しなけ
ればならないのであった。The size of the joint 51 differs depending on the diameter of the main pipe 50, and the nominal diameter of the socket 58 changes accordingly. Therefore, the pressing jigs 62 have different dimensions for each diameter of the joints 51, and the pressing jigs 62 must be manufactured and owned for every diameter of all the joints 51.
【0018】本発明は、前記事項に鑑みなされたもので
あり、前記不都合な事項を解消することを課題とする。The present invention has been made in view of the above problems, and has as its object to solve the above inconvenience.
【0019】[0019]
【課題を解決するための手段】本発明は、ノーブロー工
法における本管50に溶接した、継手51を閉鎖する、
フランジ平板56の気密試験に使用した、ガス通路72
を閉鎖する、溶接61部分の気密性を試験する溶接プラ
グ気密試験装置において、フランジ平板56のガス通路
72に連通する両ねじプラグ筒20を、フランジ平板5
6の上面に溶接し、両ねじプラグ筒20の雌ねじ22
に、プラグ60を螺合して溶接61し、両ねじプラグ筒
20の雄ねじ21に、ソケット23を気密に螺合し、ソ
ケット23に気密に接続した配管24に、圧力計66と
ガス封入用のバルブ71を設けて溶接プラグ気密試験装
置とした。According to the present invention, a joint 51 welded to a main pipe 50 in a no-blow method is closed.
The gas passage 72 used for the airtightness test of the flange plate 56 was used.
In the welded plug airtightness tester for testing the airtightness of the weld 61 portion, the double screw plug cylinder 20 communicating with the gas passage 72 of the flange flat plate 56 is connected to the flange flat plate 5.
6, the female screw 22 of the double screw plug cylinder 20
, A plug 60 is screwed and welded 61, and a socket 23 is airtightly screwed to the male screw 21 of the double-threaded plug cylinder 20, and a pressure gauge 66 and a gas sealing gas are connected to the pipe 24 airtightly connected to the socket 23. The valve 71 was provided as a welded plug airtightness test apparatus.
【0020】[0020]
【発明の実施の形態】以下図に基づいて本発明の実施の
形態の説明をする。図1〜図4は本発明の一実施の形態
の説明用の図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 4 are views for explaining one embodiment of the present invention.
【0021】この実施の形態のノーブロー工法は、従来
例と同様に、図5に示すように、本管50に継手51を
溶接して取付ける。そして、従来例と同様にして、継手
51にゲートバルブ52を取付け、ゲートバルブ52の
上にセットした穿孔機53で本管50を穿孔する。In the no-blow method according to this embodiment, a joint 51 is attached to a main pipe 50 by welding, as shown in FIG. Then, similarly to the conventional example, the gate valve 52 is attached to the joint 51, and the main pipe 50 is pierced by the piercing machine 53 set on the gate valve 52.
【0022】そして、ゲートバルブ52から穿孔機53
を取り外して、ゲートバルブ52に遮断機等を取付け
て、本管50内の遮断等を行う。そして、本管50の遮
断等を行う工事が終わった後は、ゲートバルブ52から
遮断機等を取り外し、図6に示すようにして、ゲートバ
ルブ52に栓装着具69を取付けて、継手51に、栓5
5を取付ける。Then, from the gate valve 52 to the drilling machine 53
, And a circuit breaker or the like is attached to the gate valve 52 to block the inside of the main pipe 50 or the like. After the work for shutting off the main pipe 50 is completed, the shutoff device and the like are removed from the gate valve 52, and a plug fitting 69 is attached to the gate valve 52 as shown in FIG. , Stopper 5
Install 5.
【0023】そして、継手51からゲートバルブ52を
除くと共に、栓55から操作棒70を取り外し、継手5
1の上に、図1に示すパッキン57を介して、図2に示
すフランジ平板56をボルトで締結する。Then, while removing the gate valve 52 from the joint 51, the operating rod 70 is removed from the stopper 55, and the joint 5 is removed.
2 is fastened to the flange 1 via bolts 57 shown in FIG. 1 with bolts.
【0024】そして、フランジ平板56の上面の中央部
には、両ねじプラグ筒20の下部を溶接して取付けてあ
る。そして、前記両ねじプラグ筒20は、外面に管用平
行ねじ(JIS B 0202)に加工した雄ねじ21
が形成され、内面に管用テーパ雌ねじ加工した雌ねじ2
2が形成されている。At the center of the upper surface of the flange plate 56, the lower part of the double-threaded plug cylinder 20 is attached by welding. The double-threaded plug cylinder 20 has a male screw 21 formed on the outer surface into a parallel pipe thread (JIS B0202).
Is formed, and a female thread 2 having a tapered female thread for pipe formed on the inner surface
2 are formed.
【0025】そして、前記両ねじプラグ筒20は、フラ
ンジ平板56に設けたガス通路72と連通して接続され
ている。そして、図1・図3に示すようにして、両ねじ
プラグ筒20の(但し両ねじプラグ筒20はプラグ60
を装着しない状態で)、雄ねじ21にソケット23の下
部を螺合し、ソケット23の上部に、バルブ71とブル
ドン管式の圧力計66を連設した配管24を接続したも
のである。The double-threaded plug cylinder 20 is connected to and connected to a gas passage 72 provided in the flange plate 56. Then, as shown in FIGS. 1 and 3, the double screw plug cylinder 20 (however, the double screw plug cylinder 20
), The lower portion of the socket 23 is screwed into the male screw 21, and the pipe 24 having a valve 71 and a Bourdon tube type pressure gauge 66 connected thereto is connected to the upper portion of the socket 23.
【0026】そして、前記の状態で、バルブ71からN
2ガスを空間Aに送入した後、バルブ71を閉ざす。そ
して、ブルドン管式の圧力計66を使用して、パッキン
57のシール性を検査するのである。Then, in the above state, the valve 71
After the two gases are introduced into the space A, the valve 71 is closed. Then, the sealability of the packing 57 is inspected by using a Bourdon tube pressure gauge 66.
【0027】そして、パッキン57のシール性を確認し
た後は、両ねじプラグ筒20の雄ねじ21から、ソケッ
ト23を除き、配管24などを取り外す。そして、前記
両ねじプラグ筒20の雌ねじ22に、プラグ60をねじ
結合し、よりシール性を高めるために、図8と同様にし
て、両ねじプラグ筒20とプラグ60を溶接61で結合
する。After confirming the sealing property of the packing 57, the pipe 24 and the like are removed from the male screw 21 of the double-threaded plug cylinder 20, except for the socket 23. Then, the plug 60 is screw-connected to the female screw 22 of the double-threaded plug cylinder 20, and the double-threaded plug cylinder 20 and the plug 60 are connected by welding 61 in the same manner as in FIG.
【0028】そして、図1及び図3に示すように、プラ
グ60を螺合して溶接61した両ねじプラグ筒20の雄
ねじ21に、溶接61した部分を覆う筒状のソケット2
3を螺合して結合する。As shown in FIGS. 1 and 3, the cylindrical socket 2 covering the welded portion is fitted to the male screw 21 of the double-screw plug cylinder 20 to which the plug 60 is screwed and welded 61.
3 is screwed together.
【0029】そして、ソケット23に連結する配管24
に、漏洩検知用のブルドン管式の圧力計66と、N2ガ
ス封入用のバルブ71を設けている。そして、ソケット
23内にN2ガスを圧入して、バルブ71を閉鎖し、N2
ガスを封入して、ブルドン管式の圧力計66で封入時の
圧力を計り、さらに、所定時間の経過後、ソケット23
内の圧力を計り、溶接61した部分の気密を確認する。The pipe 24 connected to the socket 23
Further, a Bourdon tube type pressure gauge 66 for detecting leakage and a valve 71 for charging N 2 gas are provided. Then, by press-fitting the N 2 gas into the socket 23, closing the valve 71, N 2
The gas is sealed, the pressure at the time of sealing is measured with a Bourdon tube pressure gauge 66, and after a predetermined time, the socket 23 is sealed.
The inside pressure is measured, and the airtightness of the welded portion is confirmed.
【0030】そして、前記した雄ねじ21が管用平行ね
じである理由は、以下に述べる通りである。 すなわ
ち、両ねじプラグ筒20にプラグ60を溶接61すると
きに、溶接61によるスパッタが、雄ねじ21の外表面
に付着してしまい、両ねじプラグ筒20にソケット23
を螺合したとき、シール不良が生じることがある。The reason why the male screw 21 is a pipe parallel screw is as follows. That is, when the plug 60 is welded 61 to the double-screw plug cylinder 20, spatter due to the welding 61 adheres to the outer surface of the male screw 21, and the socket 23 is attached to the double-screw plug cylinder 20.
When screws are screwed together, a sealing failure may occur.
【0031】そこで、これを防ぐため図4に示すよう
に、リング25を両ねじプラグ筒20の雄ねじ21に螺
合する。そうすると、リング25の雌ねじ26も管用平
行ねじであるために、両者は螺合すると同時に、両者を
同一平面に位置させることができる。To prevent this, as shown in FIG. 4, the ring 25 is screwed into the male screw 21 of the double-threaded plug cylinder 20. Then, since the female screw 26 of the ring 25 is also a pipe parallel screw, both can be screwed together and both can be positioned on the same plane.
【0032】この状態でプラグ60を溶接61すれば、
両ねじプラグ筒20の雄ねじ21の外表面に、溶接61
のスパッタが付着することがない。If the plug 60 is welded 61 in this state,
The outer surface of the external thread 21 of the double-threaded plug cylinder 20 is welded 61
No spatter adheres.
【0033】[0033]
【発明の効果】本発明は、加圧治具62を設けないの
で、Oリング63を必要としない。したがって、フラン
ジ平板56にOリング63が接触する面もないので、フ
ランジ平板56の表面を、機械加工してシール性を確保
する必要がなく、機械加工の手間を省くと共に、機械加
工した面に、ストリップペイントなどを塗る必要もない
ものとなった。According to the present invention, since the pressing jig 62 is not provided, the O-ring 63 is not required. Therefore, there is no surface on which the O-ring 63 comes into contact with the flange flat plate 56. Therefore, it is not necessary to machine the surface of the flange flat plate 56 to secure the sealing property, and it is possible to reduce the time and effort of machining and to provide the machined surface with No need to apply strip paint.
【0034】そして、Oリング63を必要としないの
で、グリースなどをフランジ平板56の表面に塗布する
必要もない。よって、その後のグリースなどの除去も必
要としないものとなった。Since the O-ring 63 is not required, there is no need to apply grease or the like to the surface of the flange plate 56. Therefore, it is not necessary to remove grease or the like thereafter.
【0035】そして、加圧治具62を必要としないの
で、加圧治具62を、継手51の大きさに従って多数設
ける必要もないものとなった。さらに、加圧治具62を
必要としないので、加圧治具62の固定具64やターン
バックル65なども必要としないものとなった。Since the pressing jig 62 is not required, it is not necessary to provide a large number of pressing jigs 62 according to the size of the joint 51. Further, since the pressing jig 62 is not required, the fixing tool 64 of the pressing jig 62 and the turnbuckle 65 are not required.
【図1】本発明の一実施の形態の説明用の断面図FIG. 1 is a sectional view for explaining an embodiment of the present invention.
【図2】本発明の一実施の形態の説明用のフランジ平板
の断面図FIG. 2 is a cross-sectional view of a flange plate for explanation of an embodiment of the present invention.
【図3】本発明の一実施の形態の説明用の要部の断面図FIG. 3 is a sectional view of a main part for explanation of an embodiment of the present invention.
【図4】本発明の一実施の形態の説明用の断面図FIG. 4 is a sectional view for explaining an embodiment of the present invention.
【図5】従来例と本発明の一実施の形態の説明用の断面
図FIG. 5 is a sectional view for explaining a conventional example and one embodiment of the present invention.
【図6】従来例と本発明の一実施の形態の説明用の断面
図FIG. 6 is a sectional view for explaining a conventional example and one embodiment of the present invention.
【図7】従来例と本発明の一実施の形態の説明用の断面
図FIG. 7 is a sectional view for explaining a conventional example and one embodiment of the present invention.
【図8】従来例と本発明の一実施の形態の説明用の断面
図FIG. 8 is a sectional view for explaining a conventional example and an embodiment of the present invention.
【図9】従来例と本発明の一実施の形態の説明用の断面
図FIG. 9 is a sectional view for explaining a conventional example and one embodiment of the present invention.
20 両ねじプラグ筒 21 雄ねじ 22 雌ねじ 23 ソケット 24 配管 25 リング 26 雌ねじ 50 本管 51 継手 52 ゲートバルブ 53 穿孔機 54 Oリング 55 栓 56 フランジ平板 57 パッキン 58 ソケット 59 加圧配管 60 プラグ 61 溶接 62 加圧治具 63 Oリング 64 固定部 65 ターンバックル 66 圧力計 67 溶接部 68 溶接 69 栓装着具 70 操作棒 71 バルブ 72 ガス通路 DESCRIPTION OF SYMBOLS 20 Double screw plug cylinder 21 Male screw 22 Female screw 23 Socket 24 Piping 25 Ring 26 Female screw 50 Main pipe 51 Joint 52 Gate valve 53 Drilling machine 54 O-ring 55 Plug 56 Flange flat plate 57 Packing 58 Socket 59 Pressurized piping 60 Plug 61 Welding 62 Addition Pressure jig 63 O-ring 64 Fixing part 65 Turnbuckle 66 Pressure gauge 67 Welding part 68 Welding 69 Plug fitting 70 Operating rod 71 Valve 72 Gas passage
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小林 一男 東京都千代田区丸の内一丁目1番2号 日 本鋼管株式会社内 (72)発明者 根本 実 神奈川県横浜市鶴見区小野町88番地 日本 鋼管工事株式会社内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Kazuo Kobayashi, 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Minoru Nemoto 88, Ono-cho, Tsurumi-ku, Yokohama, Kanagawa, Japan Construction Co., Ltd.
Claims (1)
した、継手51を閉鎖する、フランジ平板56の気密試
験に使用した、ガス通路72を閉鎖する、溶接61部分
の気密性を試験する溶接プラグ気密試験装置において、 フランジ平板56のガス通路72に連通する両ねじプラ
グ筒20を、フランジ平板56の上面に溶接し、両ねじ
プラグ筒20の雌ねじ22に、プラグ60を螺合して溶
接61し、両ねじプラグ筒20の雄ねじ21に、ソケッ
ト23を気密に螺合し、ソケット23に気密に接続した
配管24に、圧力計66とガス封入用のバルブ71を設
けた溶接プラグ気密試験装置。1. A welded plug hermetically welded to a main pipe 50 in a no-blow method, used for an airtightness test of a flange plate 56, used for an airtightness test of a flange plate 56, closed a gas passage 72, and tested for airtightness of a weld 61 portion. In the test apparatus, the double screw plug cylinder 20 communicating with the gas passage 72 of the flange flat plate 56 is welded to the upper surface of the flange flat plate 56, and the plug 60 is screwed into the female screw 22 of the double screw plug cylinder 20 and welded 61. A welded plug airtightness test apparatus in which a socket 23 is airtightly screwed into a male screw 21 of a double screw plug cylinder 20, and a pressure gauge 66 and a valve 71 for gas filling are provided in a pipe 24 airtightly connected to the socket 23.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP01186198A JP3393984B2 (en) | 1998-01-23 | 1998-01-23 | Welding plug airtightness test equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP01186198A JP3393984B2 (en) | 1998-01-23 | 1998-01-23 | Welding plug airtightness test equipment |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH11207485A true JPH11207485A (en) | 1999-08-03 |
JP3393984B2 JP3393984B2 (en) | 2003-04-07 |
Family
ID=11789520
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP01186198A Expired - Lifetime JP3393984B2 (en) | 1998-01-23 | 1998-01-23 | Welding plug airtightness test equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3393984B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100362445C (en) * | 2005-03-14 | 2008-01-16 | 佛山市顺德区顺达电脑厂有限公司 | Test set of electronic component connection socket |
CN113001048A (en) * | 2021-01-28 | 2021-06-22 | 吴春花 | Valve welding and air tightness detection integrated device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101348260B1 (en) * | 2013-05-10 | 2014-01-09 | 조인트유창써멀시스템 주식회사 | Expansion joint part of buried piping for inspecting welding condition |
-
1998
- 1998-01-23 JP JP01186198A patent/JP3393984B2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100362445C (en) * | 2005-03-14 | 2008-01-16 | 佛山市顺德区顺达电脑厂有限公司 | Test set of electronic component connection socket |
CN113001048A (en) * | 2021-01-28 | 2021-06-22 | 吴春花 | Valve welding and air tightness detection integrated device |
Also Published As
Publication number | Publication date |
---|---|
JP3393984B2 (en) | 2003-04-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7523644B2 (en) | Method and apparatus for verifying the integrity of a joint seal | |
US4420970A (en) | Apparatus for checking for leaks from metal-clad high-tension electric gear | |
US3949596A (en) | Leak test fixture and method for using same | |
US20090084165A1 (en) | Nozzle testing apparatus and method | |
US5908044A (en) | Quadra-seal method and apparatus for operations upon fluid pressure containment bodies | |
US4620731A (en) | Apparatus for sealing pipe flanges | |
JP3393984B2 (en) | Welding plug airtightness test equipment | |
CA2223247A1 (en) | Weld testing assembly | |
US1620154A (en) | Method and apparatus for repairing fluid containers | |
JP2829843B2 (en) | Pipe and flange weld inspection equipment | |
JPH09105698A (en) | Sealability inspecting apparatus for tube joint | |
JPH07140035A (en) | Jig for pressure test | |
JPS5753639A (en) | Method of and apparatus for inspecting liquid sealing property of oil field pipes | |
JPH0763636A (en) | Instrument for shutting end of piping and method for shutting end of tube | |
JP4097516B2 (en) | Seal inspection method for fittings with valve mechanism | |
JP2000146745A (en) | Method for testing airtightness | |
JPH09166259A (en) | Pipe joint for connecting branch pipe | |
JPS5826240A (en) | Method and device for inspecting revention of air leakage of rim for tubeless tire | |
CN216955132U (en) | On-line pressurizing test device for wedge-shaped gate valve | |
CN212251687U (en) | Pipeline plugging device | |
SU516867A1 (en) | Piping connection | |
JPH11118658A (en) | Airtightness inspection system for tubular specimen | |
JPH0125301Y2 (en) | ||
JPH0860687A (en) | Sealing device for manhole cover for fluid equipment, and leakage test method thereof | |
JP2575975Y2 (en) | Airtight tank |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090131 Year of fee payment: 6 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090131 Year of fee payment: 6 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313117 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090131 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100131 Year of fee payment: 7 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100131 Year of fee payment: 7 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100131 Year of fee payment: 7 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100131 Year of fee payment: 7 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100131 Year of fee payment: 7 |
|
R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100131 Year of fee payment: 7 |
|
R370 | Written measure of declining of transfer procedure |
Free format text: JAPANESE INTERMEDIATE CODE: R370 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110131 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110131 Year of fee payment: 8 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110131 Year of fee payment: 8 |
|
R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110131 Year of fee payment: 8 |
|
R360 | Written notification for declining of transfer of rights |
Free format text: JAPANESE INTERMEDIATE CODE: R360 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110131 Year of fee payment: 8 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
S531 | Written request for registration of change of domicile |
Free format text: JAPANESE INTERMEDIATE CODE: R313531 |
|
R371 | Transfer withdrawn |
Free format text: JAPANESE INTERMEDIATE CODE: R371 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110131 Year of fee payment: 8 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110131 Year of fee payment: 8 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110131 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120131 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120131 Year of fee payment: 9 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130131 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130131 Year of fee payment: 10 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140131 Year of fee payment: 11 |
|
EXPY | Cancellation because of completion of term |