KR20170024633A - Apparatus of inspecting corrosion by seawater in welding flaw of pipe - Google Patents

Apparatus of inspecting corrosion by seawater in welding flaw of pipe Download PDF

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Publication number
KR20170024633A
KR20170024633A KR1020150119467A KR20150119467A KR20170024633A KR 20170024633 A KR20170024633 A KR 20170024633A KR 1020150119467 A KR1020150119467 A KR 1020150119467A KR 20150119467 A KR20150119467 A KR 20150119467A KR 20170024633 A KR20170024633 A KR 20170024633A
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KR
South Korea
Prior art keywords
seawater
annular
grooves
coupling end
housing
Prior art date
Application number
KR1020150119467A
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Korean (ko)
Inventor
서칠수
이채문
황정래
유근민
이건
이현승
신혜선
서재수
Original Assignee
케이엔디이주식회사
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Application filed by 케이엔디이주식회사 filed Critical 케이엔디이주식회사
Priority to KR1020150119467A priority Critical patent/KR20170024633A/en
Publication of KR20170024633A publication Critical patent/KR20170024633A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/002—Test chambers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
    • G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals

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  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental & Geological Engineering (AREA)
  • Environmental Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)

Abstract

In the present invention, a seawater receiving space in which a certain amount of seawater (S) is stored is provided so as to surround a welded portion of a pipe, and an annular first coupling end (14) is formed at one end and an annular The first and second annular first and second grooves 15 and 17 are formed at respective lower portions of the first and second coupling ends 14 and 16 at a predetermined depth. And a seawater inlet port 11 and a seawater outlet port 13 provided at one side and the other side of the housing 12 and spaced apart from each other by a predetermined distance and communicating with the seawater receiving space of the housing 12, (10); An annular first cap ring 24 formed with a third groove 25 having a certain depth in the lower portion and tightly coupled to the first coupling end 14 by a first fastening bolt 23, A capping 20 having a fourth groove 27 and an annular second capping 26 tightly coupled to the second coupling end 16 by a second fastening bolt 28; A waterproof ring (30) inserted into spaces between the first and third grooves (15, 25) and the third and fourth grooves (17, 27); Thereby providing a corrosion inspection apparatus for the welded portion of the piping by the seawater.

Description

TECHNICAL FIELD [0001] The present invention relates to an apparatus for inspecting corrosion of a pipe by welding seawater,

The present invention relates to an apparatus for inspecting the degree of corrosion of a welded portion of a pipe, and more particularly, to an apparatus for inspecting the degree of corrosion of a welded portion of a pipe by sea water Lt; / RTI >

When crude oil or gas is mined from the oil field in the sea floor, mined crude oil and gas are transported to a ship, a float production storage facility, semi-submerged platform, etc. through a considerable length of pipeline, In the manner of welding.

If the welding operation is performed in the atmospheric environment, it is installed after checking the defect on the welded part. Once the pipeline connected by welding is installed on the seabed, it is exposed to the salty sea water environment. However, unlike other parts made of integral steel, the welding part is connected by the base material, so that defects may occur if the welding part is exposed to seawater for a long time.

To this end, the conventional industry has taken various measures to strengthen the corrosion prevention function against the seawater in the welded area. However, in the case of the pipeline, once the installation is completed, A technique has not yet been proposed to examine how the welded portion of a pipe due to seawater changes prior to the above.

Korean Registered Utility Model No. 0344286, Korean Registered Patent No. 1540326

SUMMARY OF THE INVENTION The present invention has been proposed in order to solve the problems of the prior art, and it is an object of the present invention to provide an apparatus capable of checking the influence of seawater on a welded portion of a pipe in advance, .

In order to achieve the above object, the present invention provides an apparatus for inspecting the degree of corrosion of piping around a piping weld by sea water, comprising a seawater receiving space in which a predetermined amount of seawater S is stored, A cylindrical housing 12 having an annular first coupling end 14 at one end and an annular second coupling end 16 at the other end and a second coupling end 14 The first and second annular grooves 15 and 17 are formed at predetermined depths in the lower portion of the housing 12 and are spaced apart from each other by a predetermined distance. A seawater circulation device (10) having a seawater inlet (11) and a seawater outlet (13) communicating with the seawater receiving space; An annular first cap ring 24 formed with a third groove 25 having a certain depth in the lower portion and tightly coupled to the first coupling end 14 by a first fastening bolt 23, A capping 20 having a fourth groove 27 and an annular second capping 26 tightly coupled to the second coupling end 16 by a second fastening bolt 28; A waterproof ring (30) inserted into spaces between the first and third grooves (15, 25) and the third and fourth grooves (17, 27); And the present invention is characterized in that it includes the technical features.

In the present invention, a device capable of circulating seawater for a long time is attached to an outer surface of a pipe for which welding has been completed, so that the degree of corrosion of the welded portion of the pipe by seawater can be checked. This is advantageous in that it is possible to anticipate the degree of damage and damage of pipes that may occur due to long contact with seawater.

1 is a schematic configuration diagram of an inspection apparatus according to the present invention;

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the technical features of the present invention, A detailed description thereof will be omitted.

The present invention relates to an apparatus for inspecting the degree of corrosion around piping welds by seawater on the ground, comprising a seawater circulation apparatus 10, a capping 20, , And a waterproof ring (30). Hereinafter, each of these configurations will be described in detail.

The seawater circulation apparatus 10 is a means for circulating seawater and includes a housing 12, a seawater inlet 11 and a seawater outlet 13. The housing 12 has a cylindrical structure having a seawater receiving space in which a predetermined amount of seawater S is stored. The housing 12 surrounds the welded portion W of the pipe P as shown in the figure.

An annular first coupling end 14 is formed at one end of the housing 12 and a second coupling end 16 is provided at the other end of the housing 12. A first groove 15 formed at a predetermined depth is formed under the first coupling end 14 and a second groove 17 formed at a predetermined depth below the second coupling end 16. Each of the first and second grooves 15 and 17 is preferably annular.

The seawater inlet 11 is provided on one side of the housing 12 and the seawater outlet 13 is provided on the other side of the housing 12 at a predetermined distance from the seawater inlet 11. Each of the seawater inlet 11 and the seawater outlet 13 communicates with the seawater receiving space of the housing 12. Although not shown in the drawing, a pump connected to the seawater inlet 11 is provided at one side of the seawater inlet 11, the pump is connected to a seawater storage tank (not shown), and the seawater outlet 13 is connected to a seawater storage tank Lt; / RTI >

Accordingly, when the pump is operated, the seawater W sequentially flows from the seawater storage tank to the seawater receiving space of the housing 12 through the seawater inlet port 11 to fill the seawater receiving space, When all of the seawater is filled, the seawater circulates through the housing 12 as some of the seawater filled by the inflow of the subsequent seawater escapes to the seawater outlet 13.

The capping 22 is constituted by a first capping 24 and a second capping 26 as means for tightly fixing the seawater circulation device 10 to the outer surface of the pipe P. [ Each of the annular first and second capings 24 and 26 is tightly coupled to the first and second coupling ends 14 and 16 by the first and second fastening bolts 23 and 28, respectively. The third and fourth grooves 25 and 27 are formed at the bottom of each of the first and second capsings 24 and 26 and have a predetermined depth and opposite to the first and second grooves 15 and 17 described above. Each of the third and fourth grooves 25 and 27 is preferably annular.

The waterproof ring 30 is a means for preventing seawater from leaking between the first engagement end 12 and the first capring 24 and between the second engagement end 14 and the second capring 24, Are inserted into spaces formed between the first and third grooves (15, 25) and the third and fourth grooves (17, 27). The waterproof ring 30 is preferably made of rubber or synthetic resin.

As described above, since the apparatus for circulating the seawater for a long time can be attached to the outer surface of the welded pipe to check the degree of corrosion of the welded portion of the pipe by seawater, It is possible to predict in advance whether or not the pipe is damaged or damaged by the contact with the pipe.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. It will be apparent that the present invention can be practiced with added features.

10: Seawater circulation device 20: Capping
30: Waterproof ring

Claims (1)

Piping by sea water It is a device to inspect the degree of corrosion around the ground on the ground,
A seawater receiving space in which a predetermined amount of seawater S is stored is provided so as to surround the welded portion of the pipe, an annular first coupling end 14 is formed at one end and an annular second coupling end The first and second annular first and second grooves 15 and 17 are formed at respective lower portions of the first and second coupling ends 14 and 16 at a predetermined depth. A seawater circulation device 10 having a seawater inlet 11 and a seawater outlet 13 provided at one side and the other side of the housing 12 spaced apart from each other by a predetermined distance and communicating with the seawater receiving space of the housing 12, ;
An annular first cap ring 24 formed with a third groove 25 having a certain depth in the lower portion and tightly coupled to the first coupling end 14 by a first fastening bolt 23, A capping 20 having a fourth groove 27 and an annular second capping 26 tightly coupled to the second coupling end 16 by a second fastening bolt 28;
A waterproof ring (30) inserted into spaces between the first and third grooves (15, 25) and the third and fourth grooves (17, 27);
Corrosion testing equipment at the welding site of piping by containing seawater.
KR1020150119467A 2015-08-25 2015-08-25 Apparatus of inspecting corrosion by seawater in welding flaw of pipe KR20170024633A (en)

Priority Applications (1)

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KR1020150119467A KR20170024633A (en) 2015-08-25 2015-08-25 Apparatus of inspecting corrosion by seawater in welding flaw of pipe

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KR1020150119467A KR20170024633A (en) 2015-08-25 2015-08-25 Apparatus of inspecting corrosion by seawater in welding flaw of pipe

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190026091A (en) * 2017-09-04 2019-03-13 대우조선해양 주식회사 Local corrosion monitoring apparatus inside metal pipe
CN113984639A (en) * 2021-10-29 2022-01-28 中船黄埔文冲船舶有限公司 Pipe flow type corrosion test device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200344286Y1 (en) 2003-12-15 2004-03-12 정영섭 Structure of anticorrosive pipe

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200344286Y1 (en) 2003-12-15 2004-03-12 정영섭 Structure of anticorrosive pipe

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190026091A (en) * 2017-09-04 2019-03-13 대우조선해양 주식회사 Local corrosion monitoring apparatus inside metal pipe
CN113984639A (en) * 2021-10-29 2022-01-28 中船黄埔文冲船舶有限公司 Pipe flow type corrosion test device
CN113984639B (en) * 2021-10-29 2024-03-26 中船黄埔文冲船舶有限公司 Pipe flow type corrosion test device

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