GB2190722A - Pipework inspection apparatus - Google Patents
Pipework inspection apparatus Download PDFInfo
- Publication number
- GB2190722A GB2190722A GB08612191A GB8612191A GB2190722A GB 2190722 A GB2190722 A GB 2190722A GB 08612191 A GB08612191 A GB 08612191A GB 8612191 A GB8612191 A GB 8612191A GB 2190722 A GB2190722 A GB 2190722A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pipework
- pipe
- mirror
- optical portion
- camera system
- 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.)
- Withdrawn
Links
- 238000007689 inspection Methods 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 21
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 241001016380 Reseda luteola Species 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 2
- 229910052753 mercury Inorganic materials 0.000 claims description 2
- 230000000007 visual effect Effects 0.000 claims description 2
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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Signal Processing (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Instruments For Viewing The Inside Of Hollow Bodies (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
An apparatus for the internal inspection of pipework comprises a TV camera system in which the optical 3 and electronics 4 portions are physically separate units joined together by an articulated joint 5. This enables the camera system to negotiate bends in pipework. <IMAGE>
Description
SPECIFICATION
Pipework inspection apparatus
The present invention concerns pipework inspection apparatus.
It is ddesirable and often necessary to visually inspect weld roots at the abutting ends of pipe sections from within the bore of the pipe. Such inspections can be carried out on site by straight introscopes and fibre optic introscopes. The former cannot negotiate bends and the latter are both expensive and vulnerable to damage.
Existing TV camera systems are such that they are unable to negotiate sharp bends in pipes of certain minimum diameter on account of their length. Thus existing TV camera systems cannot negotiate 3D bends in pipework below 100mm diameter (D is diameter of pipework).
To overcome this problem and according to the present invention a TV camera system for the internal inspection of pipework comprises an optical portion and a separate electronics portion, the two portions being connected together by a flexible coupling. As a result the camera system can in effect bend itself around bends in the pipework. Conveniently, the optical portion comprises a rotatable mirror, lens, focus motor and imagining device and the electronics portion comprises the controls, power supplies and video output to recorders and/or monitors. The system can be pushed or pulled along the bore of the pipework.
An embodiment of a camera system for the internal inspection of pipework is illustrated, by way of example, in the accompanying diagrammatic drawing.
In the drawing, a TV camera system 1 is shown within a pipe 2. The system comprises an optical portion 3 and a control or electronics portion 4, the two portions being connected by a flexible coupling 5. As a result of the flexible coupling the system can negotiate bends in the pipe. The two portions are provided with guides 6 which slidably contact the bore of the pipe 2.
In order to provide a complete peripheral scan of the pipe bore, and for example to scan the root of a weld between abutting pipe lengths, a mirror 7, inclined preferably at 45 to the longitudinal axis of the optical portion 3, is mounted on the optical portion 3. The mirror 7 is rotatable by a drive motor 8 and lamps 9 are also provided at the leading end of the optical portion. Thus by rotating the mirror it is possible to scan the interior of the pipe through 360".
It is further desirable to provide means for establishing the angular orientation of the camera system within the pipe upon rotation. This can be achieved by utilising a mercury switch that indicates a particular orientation and a stepping motor that indicates its position relative to the particular orientation and provides a visual display on a control panel. Alternatively, a U-shaped tilt switch can be mounted on the mirror assembly. A vertical picture position is indicated by the tilt-switch being in an open position to illuminate a lamp on the control panel. This operation serves to establish the zero position. Upon rotation of the mirror an optical encoder, integral with the mirror, can provide a pulse for every sixteenth of a rotation of the motor shaft.The motor is coupled to a 2000:1 gearbox and consequently one complete revolution of the motor shaft will generate 32,000 pulses. The pulses are counted and scaled to give a display of position in degrees relative to the vertical.
The above are examples only of possible means for determining camera orientation within the pipe bore.
1. Apparatus for the internal inspection of pipework comprising a TV camera system having an optical portion and a physically seperate electronics portion, the two portions being connected by a flexible coupling.
2. Apparatus according to claim 1 in which the optical portion includes a rotatable mirror inclined at an angle to the longitudinal axis of the optical portion to perform a complete peripheral scan of a pipe bore.
3. Apparatus according to claim 1 or 2 including means for establishing the angular orientation of the camera system within the pipework.
4. Apparatus for the internal inspection of pipework substantially as herein described with reference to and as illustrated in the accompanying drawing.
**WARNING** end of DESC field may overlap start of CLMS **.
Claims (4)
1. Apparatus for the internal inspection of pipework comprising a TV camera system having an optical portion and a physically seperate electronics portion, the two portions being connected by a flexible coupling.
2. Apparatus according to claim 1 in which the optical portion includes a rotatable mirror inclined at an angle to the longitudinal axis of the optical portion to perform a complete peripheral scan of a pipe bore.
3. Apparatus according to claim 1 or 2 including means for establishing the angular orientation of the camera system within the pipework.
4. Apparatus for the internal inspection of pipework substantially as herein described with reference to and as illustrated in the accompanying drawing.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08612191A GB2190722A (en) | 1986-05-20 | 1986-05-20 | Pipework inspection apparatus |
FR8706997A FR2599151A1 (en) | 1986-05-20 | 1987-05-19 | PIPING INSPECTION APPARATUS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08612191A GB2190722A (en) | 1986-05-20 | 1986-05-20 | Pipework inspection apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
GB8612191D0 GB8612191D0 (en) | 1986-06-25 |
GB2190722A true GB2190722A (en) | 1987-11-25 |
Family
ID=10598101
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08612191A Withdrawn GB2190722A (en) | 1986-05-20 | 1986-05-20 | Pipework inspection apparatus |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR2599151A1 (en) |
GB (1) | GB2190722A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2215162A (en) * | 1988-02-19 | 1989-09-13 | Sensormatic Electronics Corp | A surveillance assembly |
GB2231231A (en) * | 1989-01-06 | 1990-11-07 | Pearpoint Ltd | Miniature TV camera inspection system |
EP0902268A2 (en) * | 1997-09-13 | 1999-03-17 | Wolfgang Rausch GmbH & Co. Electronic-Maschinenbau | Pressure testing apparatus |
WO2004011183A1 (en) * | 2002-07-25 | 2004-02-05 | Shell Internationale Research Maatschappij B.V. | Forge welding of tubulars |
US7181821B2 (en) | 2002-07-17 | 2007-02-27 | Shell Oil Company | Joining expandable tubulars |
US7282663B2 (en) | 2002-07-29 | 2007-10-16 | Shell Oil Company | Forge welding process |
US7774917B2 (en) | 2003-07-17 | 2010-08-17 | Tubefuse Applications B.V. | Forge welding tubulars |
CN115200487A (en) * | 2022-08-24 | 2022-10-18 | 水利部交通运输部国家能源局南京水利科学研究院 | Safety measuring device and safety evaluation method for large-diameter pipeline |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1097585A (en) * | 1963-10-30 | 1968-01-03 | Pye Ltd | Improvements in or relating to television cameras |
GB2021351A (en) * | 1978-05-19 | 1979-11-28 | Davey A E | Pipe inspection apparatus |
US4255762A (en) * | 1978-07-26 | 1981-03-10 | Hitachi, Ltd. | Apparatus for inspecting pipes in a plant |
US4272781A (en) * | 1978-09-08 | 1981-06-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Nondestructive examining apparatus |
GB2122713A (en) * | 1982-06-28 | 1984-01-18 | Mannesmann Ag | Apparatus for working on the interior of pipes |
US4434427A (en) * | 1982-01-05 | 1984-02-28 | Magnaflux Corporation | Atmosphere control for photographic pipeline inspection |
EP0105418A1 (en) * | 1982-10-06 | 1984-04-18 | Rainer Hitzel | Tube manipulator for traversing conduits |
GB2129653A (en) * | 1982-11-02 | 1984-05-16 | Ian Roland Yarnell | Remotely controllable mounting for camera or tool |
GB2177278A (en) * | 1985-07-05 | 1987-01-14 | Hunger Ibak H Gmbh & Co Kg | Variable sight line television camera |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0029342A1 (en) * | 1979-11-20 | 1981-05-27 | Edmund Nuttall Limited | Remote inspection equipment |
FR2588380B1 (en) * | 1985-10-07 | 1988-05-27 | Commissariat Energie Atomique | DEVICE FOR REMOTE EXAMINATION OF DEFECTS LEADING TO THE INTERNAL SURFACE OF A DEEP CAVITY |
-
1986
- 1986-05-20 GB GB08612191A patent/GB2190722A/en not_active Withdrawn
-
1987
- 1987-05-19 FR FR8706997A patent/FR2599151A1/en active Pending
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1097585A (en) * | 1963-10-30 | 1968-01-03 | Pye Ltd | Improvements in or relating to television cameras |
GB2021351A (en) * | 1978-05-19 | 1979-11-28 | Davey A E | Pipe inspection apparatus |
US4255762A (en) * | 1978-07-26 | 1981-03-10 | Hitachi, Ltd. | Apparatus for inspecting pipes in a plant |
US4272781A (en) * | 1978-09-08 | 1981-06-09 | Tokyo Shibaura Denki Kabushiki Kaisha | Nondestructive examining apparatus |
US4434427A (en) * | 1982-01-05 | 1984-02-28 | Magnaflux Corporation | Atmosphere control for photographic pipeline inspection |
GB2122713A (en) * | 1982-06-28 | 1984-01-18 | Mannesmann Ag | Apparatus for working on the interior of pipes |
EP0105418A1 (en) * | 1982-10-06 | 1984-04-18 | Rainer Hitzel | Tube manipulator for traversing conduits |
GB2129653A (en) * | 1982-11-02 | 1984-05-16 | Ian Roland Yarnell | Remotely controllable mounting for camera or tool |
GB2177278A (en) * | 1985-07-05 | 1987-01-14 | Hunger Ibak H Gmbh & Co Kg | Variable sight line television camera |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2215162A (en) * | 1988-02-19 | 1989-09-13 | Sensormatic Electronics Corp | A surveillance assembly |
GB2231231A (en) * | 1989-01-06 | 1990-11-07 | Pearpoint Ltd | Miniature TV camera inspection system |
EP0902268A2 (en) * | 1997-09-13 | 1999-03-17 | Wolfgang Rausch GmbH & Co. Electronic-Maschinenbau | Pressure testing apparatus |
EP0902268A3 (en) * | 1997-09-13 | 1999-11-17 | Wolfgang Rausch GmbH & Co. Electronic-Maschinenbau | Pressure testing apparatus |
US7181821B2 (en) | 2002-07-17 | 2007-02-27 | Shell Oil Company | Joining expandable tubulars |
WO2004011183A1 (en) * | 2002-07-25 | 2004-02-05 | Shell Internationale Research Maatschappij B.V. | Forge welding of tubulars |
AU2003253334B2 (en) * | 2002-07-25 | 2006-07-27 | Shell Internationale Research Maatschappij B.V. | Forge welding of tubulars |
EA008322B1 (en) * | 2002-07-25 | 2007-04-27 | Шелл Интернэшнл Рисерч Маатсхаппий Б.В. | Forge welding of tubulars |
US7282663B2 (en) | 2002-07-29 | 2007-10-16 | Shell Oil Company | Forge welding process |
US7774917B2 (en) | 2003-07-17 | 2010-08-17 | Tubefuse Applications B.V. | Forge welding tubulars |
CN115200487A (en) * | 2022-08-24 | 2022-10-18 | 水利部交通运输部国家能源局南京水利科学研究院 | Safety measuring device and safety evaluation method for large-diameter pipeline |
Also Published As
Publication number | Publication date |
---|---|
GB8612191D0 (en) | 1986-06-25 |
FR2599151A1 (en) | 1987-11-27 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |