JPS59121283A - Duct connector - Google Patents
Duct connectorInfo
- Publication number
- JPS59121283A JPS59121283A JP22749982A JP22749982A JPS59121283A JP S59121283 A JPS59121283 A JP S59121283A JP 22749982 A JP22749982 A JP 22749982A JP 22749982 A JP22749982 A JP 22749982A JP S59121283 A JPS59121283 A JP S59121283A
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- pad
- welded
- pipes
- welded part
- 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
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
[発明の技術分野]
本光明は、例えばガス絶縁開閉装置に用いられる管路連
結装置に関づるものであって、特に、端部にフランジを
有していない容器相互を連結して管路を形成する連結装
置の改良に係るものである。Detailed Description of the Invention [Technical Field of the Invention] The present invention relates to a pipe connection device used, for example, in a gas-insulated switchgear, and particularly relates to a pipe connection device that is used for connecting containers that do not have flanges at their ends. This invention relates to an improvement of a connecting device that connects the two to form a conduit.
[発明の技術的背景]
現在、カス絶縁開閉装置は各所に使用され、それに伴い
変圧器或は第1鉄塔への接続等にもカス絶縁送電路の使
用が増大している。このガス絶縁送電路は、相当長さの
長いものが必要となることから、これに必要なユニット
管路の材料を節約できれば、その公経済的に有利となる
。この様なことからユニット管路相互の連結部に7ラン
ジを形成せず、管路相互を直接溶接する様にしたものが
ある。この場合には、輸送制限内(例えば長さが12m
〉で・できるだけ長いユニツ1〜管路を工場で製作し、
その管路相互を現地で溶接する方法が望ましい。[Technical Background of the Invention] Currently, cass-insulated switchgears are used in various places, and accordingly, cass-insulated power transmission lines are increasingly used for connections to transformers or first steel towers, etc. Since this gas-insulated power transmission line requires a considerably long length, it would be advantageous from a public and economic standpoint if the material of the unit pipe line required for this line could be saved. For this reason, there is a system in which the pipes are directly welded to each other without forming seven flanges at the joints between the unit pipes. In this case, within the transport limit (for example, the length is 12 m)
〉 ・Make the longest unit 1 ~ pipe in the factory,
It is preferable to weld the pipes together on site.
一方、ガス絶縁送電路は管路内に母線と共に例えはゲー
ジ圧ノ12KCI/cm2以上の絶縁カスが収納されて
いる為、管路相互間の溶接部に欠陥を右する場合には重
大事故を起こす原因となるので、溶接部が管路内のガス
圧に充分耐えることを検証してJ> <ことが必要であ
る。On the other hand, gas-insulated power transmission lines contain insulation scum with a gauge pressure of 12KCI/cm2 or more in the pipeline along with the busbar, so if a defect occurs in the weld between the pipelines, a serious accident may occur. It is necessary to verify that the welded part can sufficiently withstand the gas pressure inside the pipe.
[青用技術の問題点]
ところで、この様な管路相互の溶接部は、第1図に示J
1iliに1r4成されている。即ち、予め一方の管
路1の内側に当て金2の一端が溶接部2aて取イ」りら
れ、この当て金2をカイトとして他方の管路3の開口部
3aと管路1の開口部1aとを突き合せて、双方の突□
き合は部分を溶接部4にJ:り外周から溶接固定されて
いた。[Problems with blue technology] By the way, such welded parts between pipes are shown in Figure 1.
1r4 has been created in 1ili. That is, one end of the pad 2 is placed in advance at the welded portion 2a inside one of the pipes 1, and this pad 2 is used as a kite to connect the opening 3a of the other pipe 3 and the opening of the pipe 1. Match 1a and strike both □
The joint was fixed by welding to the welded part 4 from the outer periphery.
この様な構成の管路の溶接部4の検証は、管路の外側よ
り溶接部4を放射線或は超音波により照射して溶接欠陥
を検出する非破壊検出方法や、管路内に規定の液圧或は
気圧をかE:l管路が破1fl Lないことを検証する
液圧或は気圧試験が行41われている1゜
しかし、後者の液圧試験を行う場合、管路が長い為、検
査に要づる液量が膨大ながとなるので、液の供給及びI
J+除に特殊な装置を要し経湾的負担が大きくなる。ま
た、気1■試験を行う場合は、管路に傷等があり′i′
へ路か破損した時、圧力の圧縮〉tが大きい為管路が爆
発的に周囲に飛散する危険がdうるので、その安全対策
を講じた上で検証を1”jわなければならない。即ち、
危険防止作業−\bその為の1ケ1°1品等を整備りる
のに作業時間や人手がいるばかりでなく、不経洛である
。Verification of the welded part 4 of a pipeline with such a configuration can be performed using a non-destructive detection method in which welding defects are detected by irradiating the welded part 4 from the outside of the pipeline with radiation or ultrasonic waves, or by checking a specified method inside the pipeline. A hydraulic or atmospheric pressure test is carried out to verify that there is no damage to the pipe line.However, when conducting the latter hydraulic pressure test, the pipe line is long. Therefore, the amount of liquid required for inspection is enormous, so the liquid supply and I
Special equipment is required for J+ treatment, which increases the medical burden. In addition, when performing a
If the pipeline is damaged, there is a risk that the pipeline will explode into the surrounding area due to the large pressure compression (t), so safety measures must be taken and verification must be carried out. ,
Hazard prevention work - \b Not only does it take time and manpower to prepare each item, each item, etc., but it is also wasteful.
そこで、一般に気圧試験を実施りるt)tの倹訂方法と
して被破壊検査方法が採用されている。その1つ−Cあ
る放帽線試験法を用いる場合は、管路が狭隘場所(開渠
・暗渠部)に設置され管路ど尚の間隔が狭少な場所では
、放射線による検査は成用線発生装置を管路外部に接近
させることか不可能となるので゛採用づることがてきな
いし、ま/C5火1益な場所に管路を設置しない時でも
、X線発生装置より発りヨづ−る放射線の火爆から作業
者を保護しなければならない問題がある。Therefore, a destructive inspection method is generally adopted as a method for saving t) and t when performing a barometric pressure test. When using the open line test method, one of which is C, in places where pipelines are installed in narrow places (open conduits and culverts) and the intervals between the conduits are narrow, radiation inspection can be performed on the normal line. Since it is impossible to place the generator close to the outside of the pipe, it is not possible to adopt the X-ray generator, and even when the pipe is not installed in a convenient location, the X-rays emitted from the - There is a problem of protecting workers from radiation bombs.
他方、超音波探傷試験方法の場合、第2図の様に管路1
,3の外周に斜角探触子5を設置し、超音波を溶接部に
直接当Cる0、5スキツプによる方法が望ましいが、管
路に使用される材料の板厚、溶接部の開先形状等により
、溶接部の溶接幅(端部1aと38の外径側距離)が大
ぎくなる]1、rは、0.5スキツプによる方法では探
触子5が管路13の溶接ビート1F端部に当ることがあ
り、正常な位置での探傷が困デ11になり、また管路の
内側より探傷することもテII L、い場合が多いので
、第3図の如き1.5スキツプで探傷する方法が考えら
れる。On the other hand, in the case of the ultrasonic flaw detection test method, pipe line 1 is
It is preferable to use a 0.5 skip method in which an angle probe 5 is installed on the outer periphery of the pipe and the ultrasonic wave is applied directly to the welded part, but the Due to the shape of the tip, etc., the welding width of the welding part (distance on the outer diameter side between the ends 1a and 38) becomes large]1. 1.5 as shown in Figure 3. One possible method is to use a skip to detect flaws.
この場合、管路1側より探傷する時、管路1に当て金2
を固定する為の溶接部2aが探触子5から0.5スキツ
プイ」近の位置にくると、この溶接部2aの欠陥を探傷
することとなり、管路1,3の溶接部の欠陥を探傷でき
なくなる欠点を有している。In this case, when performing flaw detection from the pipe line 1 side, the pad 2 is placed on the pipe line 1.
When the welded part 2a for fixing the pipe is 0.5 inch away from the probe 5, defects in the welded part 2a will be detected, and defects in the welded parts of pipes 1 and 3 will be detected. It has the disadvantage that it cannot be used.
[発明の目的]
本発明は、上記の如き問題点に鑑みなされた−らので、
その目的は、1.5スキツプ法による超音波探傷時に当
て金の溶接部を探F3iづるおそれの4jい管路連結装
置を提供することにある。[Object of the Invention] The present invention has been made in view of the above-mentioned problems.
The purpose is to provide a pipe connection device that is free from the risk of detecting the welded part of the pad during ultrasonic flaw detection using the 1.5-skip method.
1光明の概波]
本gi明の管路連結装置は、当て金をはば環状で外周部
に軸方向に延ひる平坦部をもつものとし、この当て金−
G+、1:ど 方の管路の溶接部から双方の管路の溶接
部ま(の−・1法愛を、管路連結後の検査に用いる超7
;4.波探傷試M)装置の探触子屈折角θ。1. Waves of light] The pipe connection device of the present invention has a ring-shaped stopper with a flat part extending in the axial direction on the outer periphery.
G+, 1: From the welded part of either pipe to the welded part of both pipes (-1), super 7 is used for inspection after connecting the pipes.
;4. Wave flaw detection test M) Refraction angle θ of the probe of the device.
及び筐・路板厚1との間で、u〉2王・【旧)θの関係
に設定したしので、超音波の0.5スキツプの(1′7
厘を当て金を固定した溶接部J、りも?τ路端部側どじ
kものである。Since the relationship between u>2K and [old]θ is set between
The welded part J, which fixed the metal plate with the ring, is it limo? τ is the road end side.
1光明の実施例1
以十、本発明の一実施例を第4し1、第15図に基づい
−(具体的に説明する。な、13、第1図乃至第3図の
従来の管路連結装置と同一部分は、同一符号をイζJし
て説明は省略づる。1. Embodiment 1 of Komyo Hereinafter, an embodiment of the present invention will be described in detail based on FIGS. 1 and 15. The same parts as the connecting device are designated by the same reference numerals, and the description thereof will be omitted.
一方の管路1の端部内面には、他方の管路3との溶接部
4を裏1]らする様に、当て金11が溶接部1iaによ
り固定されている。即ら、当で金11は、第5図(al
l>に示′!1様に、円環状で、その外周面が中111
方向に延びるか平坦部12を有するよう形成されている
。この当−C金11にJ3いて、管路1の端部1aの先
端より平坦部12の端部、即ら溶接部11aまで長さU
が、管路1.3の板厚下、超音波探傷試験゛装置の探触
子5の屈折角をθ°とした場合、1>2−1−tan(
7の関係になる様に形成されている。従って、当て金1
1と管路1との溶接部11aは、管路1,3の溶接部1
の中心J:すUだけ離れた位置に配設される。A pad 11 is fixed to the inner surface of the end of one pipe line 1 by a welded part 1ia so that the welded part 4 with the other pipe line 3 is exposed on the back side. That is, the winning number 11 is as shown in Figure 5 (al
Shown in l>! 1, it is annular, and its outer circumferential surface is 111 in the middle.
It is formed so as to extend in the direction or to have a flat portion 12 . The length U from the tip of the end 1a of the conduit 1 to the end of the flat part 12, that is, the welded part 11a, is
However, when the refraction angle of the probe 5 of the ultrasonic flaw detection test device is θ° under the thickness of the pipe 1.3, 1>2-1-tan(
It is formed to have a relationship of 7. Therefore, bet 1
The welded portion 11a between the pipe line 1 and the pipe line 1 is the welded part 11a between the pipe line 1 and the pipe line 1.
The center J: is located at a distance of U.
この様に構成された本実施例の当−C金11を用いて管
路1,3を溶接するには、次の様に行う。In order to weld the pipes 1 and 3 using the metal 11 of this embodiment constructed in this way, the following procedure is performed.
即ち、■場におい゛C管路1を製作し、この溶接リベき
端部1aの内側に、管路1の端部1a先端からU >
2−T’ −tanθの位置にで当て金11を挿入覆る
と共に、管路1と当て金11とを周囲約数箇所の位置で
第4図の様に点溶接或は全周溶接し、当て金11と管路
1とをほぼ密着した構造とする1゜この管路1と当て金
11と溶接した状態で現地に運び、現地で当て金11に
他方の管路3の溶接すべき端部3aを挿入させ両者を溶
接し、管路1゜3とを連結させる。That is, ①C pipe line 1 is manufactured in the field, and a U
2-T' -tanθ, insert and cover the pad 11, and spot-weld or weld the entire circumference of the conduit 1 and the pad 11 at approximately several positions around the circumference as shown in Fig. 4. 1゜The pipe 1 and the pipe 1 are welded together to form a structure in which the metal 11 and the pipe 1 are almost in close contact with each other.The pipe 1 and the pad 11 are welded together and transported to the site, and the end of the other pipe 3 to be welded is attached to the pad 11 at the site. 3a is inserted and welded together to connect the conduit 1°3.
この様にした本実施例の装置によれば、管路1゜3の溶
接部4を予め定めた屈折角θにより斜角超音波探山装胃
を用いて1.5スキツプ法で検査づる時、0.5スキツ
プの位置が溶接部11よりも管路の端部側となるので、
超音波は溶接部11aに当ることなく管路1,3の溶接
部4に到達することかできるの−(、確実に管路1,3
の溶接部4がカス圧に耐えるかどうか検証し得るのであ
る。According to the apparatus of this embodiment, when the welded part 4 of the conduit 1.3 is inspected by the 1.5 skip method using the oblique ultrasonic probe at a predetermined refraction angle θ. , since the position of 0.5 skip is closer to the end of the pipe than the welded part 11,
Is it possible for the ultrasonic waves to reach the welds 4 of pipes 1 and 3 without hitting the welds 11a?
It can be verified whether the welded part 4 can withstand the gas pressure.
なd3、木5を明は第3図、第4図の実施例に限定され
るものでなく、第6図(a)に示す如く、当て金11の
形状は双方の管路溶接部4の裏側位置に突設部12が設
けられているものを用いれば、溶接部が充分シールドさ
れるのでより信頼性のある管路連結装置が得られる。ま
た、第6図(b)の如く、当て金11にお【プる双方の
管路溶接部の裏側位置に矩形状溝13を設(ブたものを
用いることにより、溶接時に溶接1〜−チから吹出され
るシールド用不活用ガスの逃げ道かでき、溶接部に気泡
等の傷が残らない利点がある。The shape of the pad 11 is not limited to the embodiments shown in FIGS. 3 and 4, and as shown in FIG. If a device having a protrusion 12 provided on the back side is used, the welded portion will be sufficiently shielded and a more reliable pipe connection device will be obtained. In addition, as shown in FIG. 6(b), rectangular grooves 13 are provided on the back side of both pipe welding parts in the pad 11. This provides an escape route for the unused shielding gas blown out from the pipe, and has the advantage that no bubbles or other damage will be left on the welded part.
[発明の効宋1
以トの通り、本発明によれば、当−(金の形状を超音波
の屈折角と管路の板Jνにより定めるだ(]の簡単な構
成で、超音波探傷に適した管路連結装置をiqることが
できる。[Effects of the Invention Song 1] As described above, according to the present invention, the shape of the gold is determined by the refraction angle of the ultrasonic wave and the plate Jν of the conduit () with a simple structure that can be used for ultrasonic flaw detection. A suitable conduit connection device can be installed.
第1図は従来の管路連結装置の一例を示づ部分断面図、
第2図及び第3図は、夫々第1図の管路連結部の溶接部
の超音波探傷試験方法の一例を示゛す部分断面図、第4
図は本発明のへ路辻結装置及びその溶接部の超音波探傷
試験方法の一すこ圧倒を承り断面図、第5図(a )は
同実施例の当て金の正面図、第5図(b)は第5図(a
)のA−A線に沿って切断し、矢印方向に見た断面図、
¥56図(a)は当て金に突起部を設けた本発明の他の
実施例を示す断面図、第6図(b)は当て金に矩形状溝
を設けた本発明の他の実施例を示す断面図である。
1・・・管路、1a・・・端部、2・・・当て金、2a
・・・溶接部、3・・・管路、3a・・・端部、4・・
・溶接部、5・・・探触子、11・・・当て金、11a
・・・溶接部、12・・・平坦部、12・・・突設部、
13・・・矩形状溝。
出願人 東京芝浦電気株式会社
第1図
第2図
竿 3 図
第4図
第5図
手続♀ili aThE錫 〈自発)
昭和513年2月3日
特許庁長官殿
1、事イ′lの表示
昭和57年特許願第227 /l 99号2、発明の名
称
管路連結装置
3、補正づ゛る名
小(’lとの関係 1、°1品′1出Iiイ)人東京芝
浦電気株式会社
4、代理人
東hミ都港Iメ赤坂1−1−17
5、補11ヨの対象
明細書中1−発明の詳細な説明]σ) l1il16、
補正の内容
(1) 明細内筒4頁第15行の1被破壊検査方法Jを
「非破壊検査方法」と訂正する。
(2〉 明細m第5頁第2行の「火爆」を1被爆1と訂
正する。
以 」二
子糸ジeンi1i i:F iす; (自発)昭和5ε
3イ1.511191ヨ
tjr F(庁罠官殿
1、事イ′1の表示
昭和57 ’l’ Q’s訂願第227 ’l 94)
シ〕2、発明の名称
?で;路連結鼓;e1
3 、 ン山 止 J る 者
事1′1との関係 特許出願人
東京芝浦電気株式会“拐
1、代理人
中S:厚都港12赤坂1−’l−’I/、fl11川ヒ
ル’I O/1
5、祁i正のスlτ1
添イ1図而
6.補正の内容
(1) 添イ1」図面中筒4図を別紙の通り訂正づる。
以 」ニFIG. 1 is a partial sectional view showing an example of a conventional pipe connection device;
2 and 3 are a partial sectional view and a fourth sectional view respectively showing an example of an ultrasonic flaw detection test method for a welded part of a pipe connection shown in FIG. 1.
The figure is a cross-sectional view showing the method of ultrasonic flaw detection of the welded joint of the present invention and its welded part. b) is shown in Figure 5(a)
) is a cross-sectional view taken along line A-A and viewed in the direction of the arrow,
¥56 Figure (a) is a sectional view showing another embodiment of the present invention in which a protrusion is provided on the pad, and FIG. 6 (b) is another embodiment of the present invention in which the pad is provided with a rectangular groove. FIG. DESCRIPTION OF SYMBOLS 1...Pipeline, 1a...End part, 2...Batch, 2a
...Welded part, 3... Pipeline, 3a... End, 4...
・Welded part, 5... Probe, 11... Button, 11a
... welded part, 12... flat part, 12... protruding part,
13... Rectangular groove. Applicant: Tokyo Shibaura Electric Co., Ltd. Figure 1 Figure 2 Pole 3 Figure 4 Figure 5 Procedure 1957 Patent Application No. 227/l No. 99 2, Name of the invention Pipe connection device 3, Amended name and small name (Relationship with 'l) 1, °1 item'1 Exit IIi) Tokyo Shibaura Electric Co., Ltd. 4. Agent Higashi Hmi Miyako I Me Akasaka 1-1-17 5. Supplement 11 1-Detailed Description of the Invention in the Subject Specification] σ) l1il16,
Contents of the amendment (1) 1. Destructive testing method J on page 4, line 15 of the specification is corrected to "non-destructive testing method."(2> Correct “fire bomb” in the second line of page 5 of the specification to read “1 bombing” as 1 bombing.
3 I 1.511191 Yotjr F (Indication of Agency Trap Official Hall 1, Matter A'1 1982 'l'Q's Revision No. 227 'l 94)
2. Name of the invention? Relationship with Road Connecting Drum; e1 3, Nyama Stop J Ru Personnel 1'1 Patent Applicant Tokyo Shibaura Electric Co., Ltd. "Ki 1, Representative S: Atsuto Port 12 Akasaka 1-'l-' I/, fl11 Kawa Hill'I O/1 5, Qi Masa's thread lτ1 Attachment A1 Figure 6. Contents of the amendment (1) Attachment A1' Diagram 4 of the drawing is corrected as shown in the attached sheet. ” ni
Claims (3)
結する装置であって、一方の管路の端部内面に当て金が
挿入され、この当て金の一端と前記管路内面とが溶接部
において固定され、この当て金の細端を他方の管路の端
部内面を挿入した状5屁で、双方の管路を突き合せ溶接
した管路連結装置にJ5いて、 前記当て金をほぼ環状でその外周部を軸方向に延びる平
坦部としたものとし、この当て金の一端と一方の管路の
溶接部から双方の管路の溶接部までの寸法斐を、管路連
結後の検、査に用いる超音波探傷試験装置の探触子屈折
角θ°及び管路の板厚Tとの間で、0− > 2 T−
tanθの関係となる様に設定しIcことを特徴どする
管路連結装置。(1) A device for interconnecting pipes that do not have flanges at their ends, in which a pad is inserted into the inner surface of the end of one pipe, and one end of the pad is connected to the inner surface of the pipe. is fixed at the welded part, and the narrow end of this pad is inserted into the inner surface of the end of the other pipe, and the two pipes are butt-welded to a pipe connecting device J5, and the said pad is is approximately annular and its outer periphery is a flat part extending in the axial direction, and the dimension from one end of this padding to the welding part of one pipe to the welding part of both pipes after connecting the pipes is 0- > 2 T-
A pipe connection device characterized by being set to have a relationship of tan θ and Ic.
部を設【ノ1Cものである特許請求の範囲第1項記載の
管路連結装置。(2) The conduit connecting device according to claim 1, wherein the pad has a protrusion provided on the back side of both conduit welded parts.
状の溝を設けたものである特許請求の範囲第1項記載の
管路連結装置。(3) The conduit connecting device according to claim 1, wherein the pad is provided with a rectangular groove on the back side of both conduit welded parts.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22749982A JPS59121283A (en) | 1982-12-28 | 1982-12-28 | Duct connector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22749982A JPS59121283A (en) | 1982-12-28 | 1982-12-28 | Duct connector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59121283A true JPS59121283A (en) | 1984-07-13 |
Family
ID=16861843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22749982A Pending JPS59121283A (en) | 1982-12-28 | 1982-12-28 | Duct connector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59121283A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0413331U (en) * | 1990-05-25 | 1992-02-03 |
-
1982
- 1982-12-28 JP JP22749982A patent/JPS59121283A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0413331U (en) * | 1990-05-25 | 1992-02-03 | ||
JPH0612915Y2 (en) * | 1990-05-25 | 1994-04-06 | 堀江金属工業株式会社 | Resin pipe welded structure |
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