JPS6246760B2 - - Google Patents

Info

Publication number
JPS6246760B2
JPS6246760B2 JP56136085A JP13608581A JPS6246760B2 JP S6246760 B2 JPS6246760 B2 JP S6246760B2 JP 56136085 A JP56136085 A JP 56136085A JP 13608581 A JP13608581 A JP 13608581A JP S6246760 B2 JPS6246760 B2 JP S6246760B2
Authority
JP
Japan
Prior art keywords
ultrasonic
steel casing
ultrasonic receiving
steel
attached
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
Application number
JP56136085A
Other languages
Japanese (ja)
Other versions
JPS5839900A (en
Inventor
Yoshikuni Uchida
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
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 Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Priority to JP56136085A priority Critical patent/JPS5839900A/en
Publication of JPS5839900A publication Critical patent/JPS5839900A/en
Publication of JPS6246760B2 publication Critical patent/JPS6246760B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16LPIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/16Devices for covering leaks in pipes or hoses, e.g. hose-menders

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipeline Systems (AREA)
  • Pipe Accessories (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、海底パイプラインの漏洩事故発生時
に漏洩油量を制限する海底パイプラインの緊急漏
洩油量制限装置に関する。
DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an emergency leakage oil amount limiting device for a submarine pipeline that limits the amount of leaked oil when a leakage accident occurs in a submarine pipeline.

〔従来の技術〕[Conventional technology]

長距離の海底パイプラインにおいて漏洩事故が
起こつた場合は、管に入つている油量が多大であ
るから、陸上又は海上のパイプを閉鎖しただけで
は比重差による海水と油との入れかわり現象によ
り、多量の油が漏洩し、周囲の環境を著しく損ね
るといる問題があつた。
In the event of a leakage accident in a long-distance submarine pipeline, the amount of oil contained in the pipe is large, so simply closing the pipe on land or at sea will cause the exchange of seawater and oil due to the difference in specific gravity. There was a problem that a large amount of oil leaked, significantly damaging the surrounding environment.

このような事から石油の漏洩量を最小限におさ
えるために、陸上パイプラインにおいて200〜
1000mのピツチで設置されている緊急遮断弁を同
様に設置する事も考えられるが、海底パイプライ
ンにおいてはその環境、施工方法等が陸上パイプ
ラインのそれとは大きく異なるので、前記緊急遮
断弁を設置することができなかつた。すなわち海
底において、可動部分は付着生物により作動不良
となる可能性があり、また油圧、空気圧、電力等
により作動するものにあつては(海底ではリモー
トコントロールにより作動する必要があるので動
力は不可欠である。)動力源を遮断弁の位置まで
引つ張る必要があるが、これは施工上困難であつ
た。
For this reason, in order to minimize the amount of oil leakage, 200~
It is possible to install emergency shutoff valves in the same way as those installed at 1000 m pitches, but since the environment and construction methods for submarine pipelines are significantly different from those for onshore pipelines, it is not recommended to install emergency shutoff valves as described above. I couldn't do it. In other words, movable parts on the seabed may malfunction due to attached organisms, and movable parts that are operated by hydraulic pressure, pneumatic pressure, electric power, etc. (on the seabed, they must be operated by remote control, so power is essential. ) It was necessary to pull the power source to the position of the shutoff valve, but this was difficult in construction.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

以上のように海底パイプラインにおいては適当
な緊急漏洩油量の制限方法がなく、その早急な確
立が望まれていた。なお、ここで問題にしている
漏洩とは微量ではなく、鋼管の切断等による多量
のもののみを対象にしている。
As mentioned above, there is no suitable method for limiting the amount of emergency oil leakage in submarine pipelines, and it has been desired to establish one as soon as possible. Note that the leaks in question here are not trace amounts, but only large amounts caused by cutting steel pipes, etc.

本発明は、このような状況に鑑みてなされたも
のであり、漏洩事故発生に海底パイプラインを爆
破してその管を変形させる事によりその断面積を
小さくすることで漏洩油量を制限することを可能
にした装置を得ることを目的とするものである。
The present invention has been developed in view of this situation, and aims to limit the amount of leaked oil by blowing up a submarine pipeline in the event of a leakage accident and deforming the pipe to reduce its cross-sectional area. The purpose is to obtain a device that makes it possible to

〔問題点を解決するための手段〕[Means for solving problems]

本発明に係る海底パイプラインの漏洩油量制限
装置は、鋼管の外周壁に水密に取付けられた鋼製
ケージングと、該鋼製ケージング内に充填された
火薬と、前記鋼製ケージングの上面に取付けら
れ、特定の周波数及びパターンの超音波信号によ
り前記火薬を爆発させる超音波受信信管と、超音
波受信信管に接続された犠牲陽極とを備えたもの
である。
A leakage oil amount limiting device for a submarine pipeline according to the present invention includes a steel casing that is watertightly attached to the outer peripheral wall of a steel pipe, an explosive filled in the steel casing, and an explosive that is attached to the upper surface of the steel casing. The device is equipped with an ultrasonic receiver fuze that detonates the gunpowder using an ultrasonic signal of a specific frequency and pattern, and a sacrificial anode connected to the ultrasonic receiver fuze.

〔作用〕[Effect]

本発明においては、犠牲陽極が電気防食的作動
により超音波受信信管の電源として機能する。
In the present invention, the sacrificial anode functions as a power source for the ultrasonic receiver fuze by sacrificial operation.

そして、超音波受信信管は上記の超音波信号を
受信すると火薬を爆発させる。これにより鋼管は
爆破されて、その形状は変形したものとなり、鋼
管の断面積は正常時(円形)に比べて小さくなつ
て、そこから外部へ漏洩する油量も少なくなる。
When the ultrasonic receiving fuse receives the ultrasonic signal, it detonates the gunpowder. As a result, the steel pipe is blown up and its shape becomes deformed, the cross-sectional area of the steel pipe becomes smaller than when it is normal (circular), and the amount of oil leaking from there to the outside is also reduced.

〔実施例〕〔Example〕

以下本発明の一実施例を図面と共に説明する。
図面中1は海底パイプラインの鋼管、2は海面、
3はパトロールボート、4は超音波発信器であ
る。5は超音波受信信管、6は火薬、7は鋼製ケ
ージング、8は犠牲陽極、9はリード線である。
鋼製ケージング7は鋼管1に水密構造で取付けら
れており、その内部には火薬6が充填されてい
る。更に、鋼製ケージング7の上面には超音波受
信信管5が取付けられ、それはリード線9を介し
て犠牲陽極板8に接続されている。
An embodiment of the present invention will be described below with reference to the drawings.
In the drawing, 1 is the steel pipe of the submarine pipeline, 2 is the sea surface,
3 is a patrol boat, and 4 is an ultrasonic transmitter. 5 is an ultrasonic receiving fuse, 6 is gunpowder, 7 is a steel casing, 8 is a sacrificial anode, and 9 is a lead wire.
The steel casing 7 is attached to the steel pipe 1 in a watertight manner, and the inside thereof is filled with gunpowder 6. Further, an ultrasonic receiving fuse 5 is attached to the upper surface of the steel casing 7, and is connected to a sacrificial anode plate 8 via a lead wire 9.

パトロールボート3に取付けられた超音波発信
器4から特定の周波数及びパターンの超音波信号
を送信すると、鋼製ケージング7の上面に取付け
られた超音波受信信管5が作動する。この信管5
が作動すると火薬6が爆発し、その爆発力により
鋼管1が故しつぶされて変形する。鋼管1が押し
つぶされると、ラインを遮断するまではいかない
が、爆破前は円形断面であつたものが変形するわ
けであるから、少なくとも円形断面よりも面積が
小さなものとなる。従つて、その漏洩量は爆破前
よりも少なくなる。この事は実験により充分効果
があることが確認されている。なお、超音波受信
信管5の動作電源は犠牲陽極8の電気防食的作動
により供給される。また、誤動作を防止するため
に超音波発信器4の発信する超音波の周波数を適
当に選択し、さらにそのパターンを予め特定にし
ておく必要がある。
When an ultrasonic signal of a specific frequency and pattern is transmitted from an ultrasonic transmitter 4 attached to the patrol boat 3, an ultrasonic receiving fuse 5 attached to the upper surface of the steel casing 7 is activated. This fuse 5
When activated, the gunpowder 6 explodes, and the steel pipe 1 is crushed and deformed by the explosive force. When the steel pipe 1 is crushed, it does not cut off the line, but the circular cross section before the blasting is deformed, so at least the area becomes smaller than the circular cross section. Therefore, the amount of leakage will be less than before the explosion. This has been confirmed through experiments to be sufficiently effective. Note that the operating power for the ultrasonic receiving fuse 5 is supplied by the sacrificial anode 8 operated for electrolytic protection. Furthermore, in order to prevent malfunctions, it is necessary to appropriately select the frequency of the ultrasonic waves emitted by the ultrasonic transmitter 4 and to specify the pattern in advance.

例えば海底パイプラインの切断等により大量漏
洩事故発生したならば、まず流量計、圧力波方式
等の間接的検知方式により当該事故を検知し、ラ
インの運転を停止し、陸上及び海上の緊急遮断弁
を閉塞する。その後漏洩箇所に近い両側の鋼製ケ
ージング7に、パトロールボート3又はヘリコプ
ターで行き、現地において超音波発信器4から所
定の超音波信号を発信して、上述したように海底
パイプラインの鋼管1を爆破する。
For example, if a large-scale leakage accident occurs due to cutting of an undersea pipeline, etc., the accident is first detected using indirect detection methods such as flowmeters and pressure wave methods, line operation is stopped, and emergency shutoff valves are installed on land and at sea. occlude. After that, go to the steel casings 7 on both sides near the leakage point by patrol boat 3 or helicopter, transmit a predetermined ultrasonic signal from the ultrasonic transmitter 4 at the site, and as described above, the steel pipe 1 of the submarine pipeline is Explode.

〔発明の効果〕〔Effect of the invention〕

以上の説明から明らかなように本発明に係る装
置は、パイプラインを爆破して変形させることに
より油の漏洩量を制限するように構成したので、
動力源を陸上から配管する必要もなく、また可動
部分がないため生物付着もなく、保守の必要もな
く、さらに漏洩量の大幅な軽減化が可能となつて
いる。
As is clear from the above description, the device according to the present invention is configured to limit the amount of oil leakage by blowing up and deforming the pipeline.
There is no need to connect power source piping from land, and since there are no moving parts, there is no biofouling, there is no need for maintenance, and the amount of leakage can be significantly reduced.

【図面の簡単な説明】[Brief explanation of the drawing]

図面の本発明の一実施例に係る装置の説明図で
ある。 1……鋼管、2……海面、3……パトロールボ
ート、4……超音波発信器、5……超音波受信信
管、6……火薬、7……鋼製ケージング、8……
犠牲陽極、9……リード線。
1 is an explanatory diagram of an apparatus according to an embodiment of the present invention in the drawings; FIG. 1... Steel pipe, 2... Sea surface, 3... Patrol boat, 4... Ultrasonic transmitter, 5... Ultrasonic receiving fuse, 6... Gunpowder, 7... Steel casing, 8...
Sacrificial anode, 9...Lead wire.

Claims (1)

【特許請求の範囲】[Claims] 1 鋼管の外周壁に水密に取付けられた鋼製ケー
ジングと、該鋼製ケージング内に充填された火薬
と、前記鋼製ケージングの上面に取付けられ、特
定の周波数及びパターンの超音波信号により前記
火薬を爆発させる超音波受信信管と、該超音波受
信信管に接続された犠牲陽極とを備えた事を特徴
とする海底パイプラインの緊急漏洩油量制限装
置。
1. A steel casing that is watertightly attached to the outer peripheral wall of a steel pipe, explosives filled in the steel casing, and an explosive that is attached to the top surface of the steel casing and that uses an ultrasonic signal of a specific frequency and pattern to expel the explosives. 1. An emergency leakage oil amount limiting device for a submarine pipeline, comprising: an ultrasonic receiving fuze that explodes an ultrasonic receiving fuse; and a sacrificial anode connected to the ultrasonic receiving fuze.
JP56136085A 1981-09-01 1981-09-01 Emergency control method and device for oil leakage from submarine pipeline Granted JPS5839900A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56136085A JPS5839900A (en) 1981-09-01 1981-09-01 Emergency control method and device for oil leakage from submarine pipeline

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56136085A JPS5839900A (en) 1981-09-01 1981-09-01 Emergency control method and device for oil leakage from submarine pipeline

Publications (2)

Publication Number Publication Date
JPS5839900A JPS5839900A (en) 1983-03-08
JPS6246760B2 true JPS6246760B2 (en) 1987-10-05

Family

ID=15166898

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56136085A Granted JPS5839900A (en) 1981-09-01 1981-09-01 Emergency control method and device for oil leakage from submarine pipeline

Country Status (1)

Country Link
JP (1) JPS5839900A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2758536B2 (en) * 1992-08-11 1998-05-28 三菱伸銅株式会社 Welded copper alloy pipe with inner groove
US20070169854A1 (en) 2004-08-10 2007-07-26 Sanbo Shindo Kogyo Kabushiki Kaisha Copper-based alloy casting in which grains are refined
KR101050638B1 (en) 2005-09-30 2011-07-19 미쓰비시 신도 가부시키가이샤 Molten solidified material
KR101531288B1 (en) * 2014-03-27 2015-06-24 삼성중공업 주식회사 Apparatus for preventing leakage of pipeline

Also Published As

Publication number Publication date
JPS5839900A (en) 1983-03-08

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