WO2009125894A1 - Appareil pour inspecter l’intérieur d’un tuyau - Google Patents

Appareil pour inspecter l’intérieur d’un tuyau Download PDF

Info

Publication number
WO2009125894A1
WO2009125894A1 PCT/KR2008/002659 KR2008002659W WO2009125894A1 WO 2009125894 A1 WO2009125894 A1 WO 2009125894A1 KR 2008002659 W KR2008002659 W KR 2008002659W WO 2009125894 A1 WO2009125894 A1 WO 2009125894A1
Authority
WO
WIPO (PCT)
Prior art keywords
coupled
camera assembly
steering wire
camera
base
Prior art date
Application number
PCT/KR2008/002659
Other languages
English (en)
Inventor
Bae Lee
In-Cheol Hwang
Original Assignee
Doobae System
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 Doobae System filed Critical Doobae System
Publication of WO2009125894A1 publication Critical patent/WO2009125894A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
    • G02B23/2476—Non-optical details, e.g. housings, mountings, supports
    • G02B23/2484—Arrangements in relation to a camera or imaging device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/06—Accessories therefor, e.g. anchors
    • F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground

Definitions

  • the present invention relates to an apparatus for inspecting the inside of a pipe. More particularly, the present invention relates to an apparatus that can inspect a degree of a crack or corrosion of the inside of a pipe such as a water pipe, and can particularly easily inspect the inside of a pipe that is arranged in a bent state.
  • a pipe such as a water pipe
  • Pipes such as water supply pipes become old and dilapidated over the years, and may thus become cracked and corroded. Therefore, the insides of the pipes used for conveying liquid or gas are required to be periodically inspected for maintenance.
  • An apparatus for inspecting the inside of the pipe includes a main body having a monitor, a power source, and an adjusting unit, a flexible tube fixed on the main body, and a camera assembly coupled to an extreme end of the flexible tube.
  • the apparatus for inspecting the inside of the pipe further includes a driving unit for driving the camera assembly in left, light, upper, and lower directions in accordance with control of the adjusting unit.
  • the driving unit includes a motor and a plurality of wires that are pulled or released in accordance with driving of the motor to move the camera assembly in the left, right, upper, and lower directions.
  • the apparatus for inspecting the inside of the pipe can inspect the inside of the pipe while moving the camera assembly in the left, right, upper, and lower directions by driving the driving unit using the adjusting unit when there is a bend in the pipe.
  • connecting members are used. Since the diameter of the connecting members is different from that of the pipe, steps are formed at the inside of the connected pipes.
  • the worker inserts the camera assembly into the pipes and adjusts the camera assembly in the left, right, upper, and lower directions to allow the camera assembly to move along the inside of the connected pipes.
  • the typical apparatus for inspecting the inside of the pipe is structured to be driven by a driving source, a plurality of electric signed wires and a plurality of cables for the adjustment of the camera assembly are installed in the flexible tube connected to the camera assembly, and thus the flexibility of the flexible tube is deteriorated.
  • the present invention has been made in an effort to solve the above- described limitations, and thus it is an object of the present invention to provide an apparatus for inspecting the inside of a pipe that can easily inspect the inside of a pipe that is narrow, long, and bent, can make the work convenient, and can enable unskilled workers to perform the inspection of the inside of the pipe. In addition, it is another object of the present invention to provide an apparatus for inspecting the inside of a pipe that can be manufactured in a simple structure and thus reduce the manufacturing cost thereof.
  • the present invention provides an apparatus for inspecting the inside of a pipe that includes a monitor assembly for displaying an image, a connecting cable coupled to the monitor assembly, an adjusting unit coupled to the connecting cable, a flexible tube coupled to the adjusting unit, and a camera assembly coupled to an extreme end of the flexible tube.
  • the connecting cable may be coupled by a connecting jack or a rotational structure so that it can rotate in a state where it is coupled.
  • the camera assembly may include a base, a first cover coupled to an extreme end of the base and having a rounded front edge, a second cover coupled to a rear end and having an inclined portion formed at an edge thereof, a camera coupled to an extreme end of a central portion of the base, and a light installed on the base and arranged around the camera.
  • the flexible tube may include a first elastic member coupled between the adjusting unit and the camera assembly and provided in the form of a spring, an outer surface supporting unit disposed on an outer circumference of the first elastic member, a fixing member spaced apart from the camera assembly by a predetermined distance and disposed inside the first elastic member, a second elastic member coupled to a central portion of the fixing member and to a central portion of the base of the camera assembly, a steering wire coupled to the base of the camera assembly and connected to an adjusting knob of the adjusting unit through the fixing member, and a fixing ring disposed on an outer circumference of the fixing member and fixedly enclosing the outer surface supporting unit.
  • the apparatus may further include a steering wire guide that is disposed on an outer circumference to protect the steering wire.
  • the adjusting unit includes a case defining a space therein, a bobbin that is provided in the space defined by the case and around which the steering wire is wound, and an adjusting knob connected to the steering wire wound around the bobbin and movable by a predetermined distance.
  • the steering wire may be coupled to the base of the camera assembly.
  • An indication point may be marked on a lens of a camera of the camera assembly, and the steering wire may be coupled in the same orientation as the indication point.
  • FIG. 1 is a schematic diagram of an apparatus for inspecting the inside of a pipe according to an exemplary embodiment of the present invention.
  • FIG. 2 is a cross-sectional view taken along line II-II of FIG. 1.
  • FIG. 3 is an exploded perspective view illustrating major parts of FIG. 1.
  • FIG. 4 is a detailed view illustrating an adjusting unit depicted in FIG. 1.
  • FIG. 5 is a perspective view of a combination of a connection cable and a monitor assembly according to an exemplary embodiment of the present invention.
  • FIG. 1 is a schematic diagram illustrating an outer structure of an apparatus for inspecting the inside of a pipe according to an exemplary embodiment of the present invention.
  • An apparatus for inspecting the inside of a pipe in accordance with an exemplary embodiment of the present invention includes a monitor assembly 1 for displaying an image, a connecting cable 3 that is connected to the monitor assembly 1 to transfer electrical signals, an adjusting unit 5 enabling a worker to inspect the inside of the pipe, a flexible tube 7 corresponding to a shape of the pipe, and a camera assembly 9 for taking an image of the inside of the pipe.
  • the monitor assembly 1 has a power source Ia.
  • a controller (not shown) may be provided in the monitor assembly 1.
  • the monitor assembly 1 displays image signals transferred from the camera assembly 9 to enable the worker to observe the inside of a pipe such as a water pipe.
  • the connecting cable 3 connected to the monitor assembly 1 is provided at an end thereof with a connecting jack 3a that is separable and capable of being coupled through a typical insertion coupling manner. Further, the connection jack 3a is fitted to the monitor assembly 1 to connect the connection cable 3 to the monitor assembly 1.
  • the monitor assembly 1 is exemplarily coupled to the connecting cable 3 by the connecting jack 3a.
  • the present invention is not limited to this embodiment. That is, as long as the connecting cable 3 is rotatably connected, any coupling members can be used.
  • the connecting cable 3 is provided to receive and transfer the electric signals from and to a camera of the camera assembly 9 and to supply electric power to the camera assembly 9.
  • the connecting cable 3 is coupled to the adjusting unit 5.
  • the connecting cable 3 is connected to the adjusting unit 5 by a connecting jack as described above, or by other members that can rotatably connect the connecting cable 3 to the adjusting unit 5.
  • the camera assembly 9 includes a base 11, a first cover 13 coupled to an extreme end of the base 11, a second cover 15 coupled to a rear end of the base 11, a camera 17 coupled to the base 11, and a light 19 coupled to the base 11.
  • the cover 13 coupled to the extreme end of the base 11 has a front outer edge 13a that may be rounded.
  • the reason for making the front outer edge rounded is to prevent it from being hooked on a step formed at the inside of a connection portion of water pipes when the camera assembly 9 passes through the connection portion, thereby enabling the camera assembly 9 to smoothly pass through the water pipes.
  • the second cover 15 has an inclined portion 15a that is formed at a rear end edge thereof.
  • the second cover 15 is coupled to a rear end of the base 11 and is designed to allow the camera assembly 9 to be easily withdrawn from the pipes.
  • the camera 17 is coupled to a central portion of the base 11 and the light 19 is disposed at an outer circumference of the camera 17.
  • the flexible tube 7 includes a first elastic member 31, an outer surface supporting unit 33, a fixing member 35, a second elastic member 37, a steering wire 39, and a fixing ring 41.
  • the first elastic member 31 is installed between the base 11 and the adjusting unit 5.
  • the first elastic member 31 may be formed as a coil spring.
  • the first elastic member 31 may be flexible in any direction while having appropriate elastic force.
  • the outer surface supporting unit 33 is coupled to an outer circumferential surface of the first elastic member 31.
  • the outer surface supporting unit 33 supports not only the first elastic member 31 but also parts provided therein.
  • the outer surface supporting unit 33 functions to support the first elastic member 31 to prevent the first elastic member 31 from being excessively bent.
  • the outer surface supporting unit 33 may be formed by alternately and repeatedly arranging thin, long wires.
  • any type of the outer surface supporting unit 33 may be possible as long as it has the above-described function.
  • the fixing member 35 is disposed in the first elastic member 31 and spaced apart from the base 11 by a predetermined distance.
  • the fixing member 35 is provided at a center thereof with a groove in which the second elastic member 37 is coupled and at a side with a hole through which the steering wire 39 passes.
  • the second elastic member 37 is coupled to a central portion of a portion between the base 11 and the fixing member 35.
  • the second elastic member 37 may be formed as a tension spring.
  • the steering wire 39 has a first end coupled to a first side of the base 11 and a second end coupled to an adjusting knob 55 of the adjusting unit 5.
  • the steering wire 39 may be arranged such that the base 11 changes its orientation in a direction when the adjusting unit 5 pulls the steering wire 39.
  • a steering wire guide 43 may be provided around the steering wire 39 to protect the steering wire 39.
  • the steering wire guide 43 may be provided in the form of a spring. The steering wire guide 43 prevents the steering wire 39 from being damaged and allows the operation of the adjusting unit 5 for pulling and releasing the pulled state of the steering wire 39 to be transferred to the base 11.
  • the fixing ring 41 is disposed on the outer circumference of the fixing member 35 and fixed while enclosing the outer surface supporting unit 33.
  • the fixing ring 41 is provided to securely fix the fixing member 35.
  • the adjusting unit 5 is, as shown in FIG. 4, includes a case 51, a bobbin 53, and the adjusting knob 55. As described above, the adjusting unit 5 is spaced apart from the monitor assembly 1 and connected to the connecting cable 3.
  • the case 51 defining an exterior of the adjusting unit 5 may be provided in the form of a handle the worker can grasp with one hand.
  • case 51 Since the case 51 is designed such that the worker can easily rotate it in a state where the worker grasps it with one hand, workability can be improved.
  • the case 51 defines a space therein and encloses the bobbin 53 around which the steering wire 39 is partly wound and that can change a direction of the steering wire 39.
  • the adjusting knob 55 that can move by a predetermined distance is provided on the case 51.
  • a first end of the steering wire 39 that is partly wound around the bobbin 53 is coupled to the adjusting knob 55. Therefore, the steering wire 39 is pulled or released in accordance with the movement of the adjusting knob 55.
  • an indication point Ib shown in FIG. 1, i.e., a point indicating a lower portion of the monitor displayed on the monitor on which the image taken by the camera 17 of the camera assembly 9 is displayed, and the steering wire 39 may be coupled in the same orientation as the indication point Ib.
  • the indication point Ib may be marked on a lens of the camera 17 and appear on the monitor. That is, the indication point Ib may be marked on the lens of the camera 17 and the steering wire 39 is coupled to the base 11 in an identical orientation as the indication point Ib.
  • the image taken by the camera 17 is displayed on the monitor and the location where the steering wire 39 is coupled to the base 11 coincides with the lower portion of the image.
  • Such a structure is to allow the worker to easily identify a current direction in which the camera is oriented by pulling the steering wire 39 after rotating the camera 17 in order to dispose the image of the pipe bend taken by the camera 17 at the lower portion of the monitor.
  • Such a structure allows even the unskilled worker to identify the current direction in which the camera is oriented and thus the inspection of the inside of the pipes can be easily performed.
  • Only one steering wire is exemplarily provided in the exemplary embodiment of the present invention, and two steering wires may be provided to change the orientation of the camera in two directions.
  • the worker inserts the camera assembly 9 into a pipe to be inspected in a state where he/she grasps the adjusting unit 5 with one hand.
  • the worker keeps inserting the camera assembly 9.
  • the camera 17 captures an image of the inside of the pipe and transfers the image to the monitor.
  • the worker rotates the adjusting unit 5 such that the bent direction of the pipe coincides with the lower portion of the monitor (indication point Ib).
  • the steering wire 39 is pulled.
  • the worker can easily change the orientation of the camera in a desired direction since the direction (the orientation of the camera assembly is changed as the elastic member is bent) in which the camera will be advanced coincides with the bend direction of the pipe.
  • the following will describe a process for changing the orientation of the camera by pulling the adjusting knob 55.
  • the steering wire 39 is pulled, by which the first elastic member 31 is bent and thus the orientation of the camera assembly is changed.
  • the camera assembly 9 is smoothly inserted or withdrawn because of the rounded portion 15a of the first cover 13 and the inclined portion 15a of the second cover 15 without being caught on a step formed inside the pipe.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Instruments For Viewing The Inside Of Hollow Bodies (AREA)

Abstract

L’invention concerne un appareil pour inspecter l’intérieur d’un tuyau qui peut inspecter l’ampleur d’une fissure ou le degré de corrosion à l’intérieur d’un tuyau tel qu’un tuyau à eau et peut facilement inspecter l’intérieur des tuyaux qui sont raccordés en position coudée. L’appareil d’inspection de l’intérieur d’un tuyau comprend un moniteur pour afficher une image, un câble de raccordement relié au moniteur, une unité de réglage reliée au câble de raccordement, un tube souple relié à l’unité de réglage et une caméra reliée à une extrémité du tube souple.
PCT/KR2008/002659 2008-04-08 2008-05-13 Appareil pour inspecter l’intérieur d’un tuyau WO2009125894A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020080032836A KR100978889B1 (ko) 2008-04-08 2008-04-08 배관 내부 검사 장치
KR10-2008-0032836 2008-04-08

Publications (1)

Publication Number Publication Date
WO2009125894A1 true WO2009125894A1 (fr) 2009-10-15

Family

ID=41162022

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/002659 WO2009125894A1 (fr) 2008-04-08 2008-05-13 Appareil pour inspecter l’intérieur d’un tuyau

Country Status (2)

Country Link
KR (1) KR100978889B1 (fr)
WO (1) WO2009125894A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11842474B1 (en) * 2008-03-07 2023-12-12 Seescan, Inc Pipe inspection system camera heads

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101118270B1 (ko) * 2009-12-10 2012-03-20 주식회사 두배시스템 관로 검사 장치
KR102126636B1 (ko) * 2019-11-09 2020-06-24 (주) 한일네트워크엔지니어링 파이프 어셈블리 및 이를 포함하는 수도관 내시경 장치
KR102242884B1 (ko) * 2020-06-18 2021-04-21 (주) 한일네트워크엔지니어링 수도관 내시경 장치
KR102470629B1 (ko) 2022-05-20 2022-11-25 주식회사 주안엔지니어링 누수 탐지가 가능한 수도관 내시경 장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921326A (en) * 1989-03-23 1990-05-01 Victor F. Wild Fiber optic probe
JPH0666526A (ja) * 1992-08-14 1994-03-08 Olympus Optical Co Ltd ３次元計測方法及び３次元計測装置
US5811817A (en) * 1996-04-25 1998-09-22 Ravich; Gilbert Norman Method & apparatus for detecting fracture filled diamonds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2506369B2 (ja) 1987-05-28 1996-06-12 オリンパス光学工業株式会社 内視鏡装置
JP2002048983A (ja) 2000-08-01 2002-02-15 Kimio Fujii 遠隔点検装置
JP4929789B2 (ja) 2006-03-30 2012-05-09 Ｊｆｅスチール株式会社 内視鏡

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4921326A (en) * 1989-03-23 1990-05-01 Victor F. Wild Fiber optic probe
JPH0666526A (ja) * 1992-08-14 1994-03-08 Olympus Optical Co Ltd ３次元計測方法及び３次元計測装置
US5811817A (en) * 1996-04-25 1998-09-22 Ravich; Gilbert Norman Method & apparatus for detecting fracture filled diamonds

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11842474B1 (en) * 2008-03-07 2023-12-12 Seescan, Inc Pipe inspection system camera heads

Also Published As

Publication number Publication date
KR100978889B1 (ko) 2010-08-30
KR20090107361A (ko) 2009-10-13

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