JPH0518693Y2 - - Google Patents
Info
- Publication number
- JPH0518693Y2 JPH0518693Y2 JP3378786U JP3378786U JPH0518693Y2 JP H0518693 Y2 JPH0518693 Y2 JP H0518693Y2 JP 3378786 U JP3378786 U JP 3378786U JP 3378786 U JP3378786 U JP 3378786U JP H0518693 Y2 JPH0518693 Y2 JP H0518693Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- ultrasonic
- reflector
- reflecting plate
- pig
- 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 - Lifetime
Links
- 239000000758 substrate Substances 0.000 claims description 7
- 241000282887 Suidae Species 0.000 claims description 4
- 238000007689 inspection Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
この考案は、管壁検査用ピグの反射板に関する
ものである。[Detailed description of the invention] [Technical field of the invention] This invention relates to a reflector plate for a pipe wall inspection pig.
従来、水道管やガス管等の管の内面疵等の有無
を検査するためのピグには、テレビカメラや超音
波を利用するものがあるが、テレビカメラによる
ピグは、管内面を直接目視によつて検査すること
ができる反面、管壁内の疵は発見できず、一方、
超音波によるピグは、管内面はもとより管壁内の
疵を検出することができる反面、管内面の状態の
把握は、テレビカメラに比べて劣る。
Conventionally, there are pigs that use television cameras or ultrasonic waves to inspect the inner surface of water pipes, gas pipes, etc., but pigs that use television cameras can directly visually inspect the inner surface of the pipe. On the other hand, defects within the pipe wall cannot be detected; on the other hand,
Although ultrasonic pigs can detect flaws not only on the inner surface of the tube but also on the tube wall, they are less able to grasp the condition of the inner surface of the tube than television cameras.
そこで、テレビカメラおよび超音波の両方によ
つて管壁検査を行なえるピグが、特願昭61−
50495号（特開昭62−207955号）（以下、先行技術
という）として提案された。以下、先行技術を図
面を参照しながら説明する。 Therefore, PIG, which can inspect pipe walls using both a television camera and ultrasonic waves, was proposed in a patent application filed in 1983.
It was proposed as No. 50495 (Japanese Unexamined Patent Publication No. 62-207955) (hereinafter referred to as prior art). The prior art will be explained below with reference to the drawings.
図面において、ピグ本体１は、その外面に周方
向にわたつてテフロン等によつて作られたシール
部材２が取り付けられている。ピグ本体１の先端
部には、その周方向にそつて開口３が形成されて
いる。 In the drawing, a pig body 1 has a sealing member 2 made of Teflon or the like attached to its outer surface in the circumferential direction. An opening 3 is formed in the tip of the pig body 1 along its circumferential direction.
反射板４は、中空で円錐形状をなし、その頂部
がピグ本体１の後端側を向くようにピグ本体１の
先端部内に固定されている。 The reflecting plate 4 is hollow and has a conical shape, and is fixed within the tip of the pig body 1 so that its top faces toward the rear end of the pig body 1.
テレビカメラ５は、ピグ本体１内において、反
射板４の中心軸線上に反射板４と対向して設けら
れている。テレビカメラ５は、ピグ本体１先端部
の開口３を通して反射板４に写つた管６の内面の
像を撮影する。ピグ本体１の先端部には、照明灯
７が周方向に間隔をあけて複数個取り付けられて
いる。照明灯７によつて管６の内面は撮影可能な
明るさに照らされる。 The television camera 5 is provided within the pig body 1 on the central axis of the reflector 4, facing the reflector 4. A television camera 5 photographs an image of the inner surface of the tube 6 reflected on a reflection plate 4 through an opening 3 at the tip of the pig body 1. A plurality of illumination lights 7 are attached to the tip of the pig body 1 at intervals in the circumferential direction. The illumination lamp 7 illuminates the inner surface of the tube 6 to a brightness that allows photographing.
超音波送受信器８は、ピグ本体１内において、
反射板４の中心軸線を中心として周方向に間隔を
あけて反射板４と対向して複数個設けられてい
る。超音波送受信器８からの超音波は、反射板４
によつて反射し、ピグ本体１の開口３を通つて管
６の内面に向けて発振され、そして、管６の内面
で反射した超音波及び管壁を透過後管６の外面で
反射した超音波は、開口３を通り反射板４によつ
て反射して超音波送受信器８によつて受信され
る。 The ultrasonic transceiver 8 is located within the pig body 1.
A plurality of them are provided facing the reflecting plate 4 at intervals in the circumferential direction about the central axis of the reflecting plate 4. The ultrasonic waves from the ultrasonic transmitter/receiver 8 are transmitted to the reflector plate 4
The ultrasonic wave is reflected by the pig body 1, is oscillated toward the inner surface of the tube 6 through the opening 3 of the pig body 1, and is reflected by the inner surface of the tube 6. The sound waves pass through the aperture 3, are reflected by the reflection plate 4, and are received by the ultrasonic transceiver 8.
テレビカメラ５および超音波送受信器８への電
力の供給およびこれらからの電気信号の送受信
は、可撓性ロツド９内に収容されたケーブル１０
を通して行なわれる。 A cable 10 housed within a flexible rod 9 supplies power to the television camera 5 and ultrasound transceiver 8 and transmits and receives electrical signals therefrom.
It is done through.
このように構成されている、先行技術の管壁検
査用ピグにおいては、次のようにして、管壁が検
査される。即ち、ピグ本体１を管６内に入れて、
圧送またはケーブル１０を収容しているロツド９
を管６の端部から繰り出して、ピグ本体１を管６
にそつて移動させる。反射板４上に写つた管６の
内面全周像は、テレビカメラ５によつて撮影さ
れ、これと同時に、超音波送受信器８から発信さ
れ、管６の内面で反射した超音波及び管壁を透過
し管６の外面で反射した超音波は、反射板４で反
射し、超音波送受信器８によつて受信されて管壁
の探傷が行なわれる。 In the prior art tube wall inspection pig configured as described above, the tube wall is inspected in the following manner. That is, put the pig body 1 into the tube 6,
Rod 9 housing pumping or cable 10
from the end of the tube 6, and insert the pig body 1 into the tube 6.
move it along. The entire circumferential image of the inner surface of the tube 6 reflected on the reflection plate 4 is captured by the television camera 5, and at the same time, the ultrasonic wave transmitted from the ultrasonic transmitter/receiver 8 and reflected on the inner surface of the tube 6 and the tube wall are captured. The ultrasonic waves transmitted through the pipe 6 and reflected by the outer surface of the tube 6 are reflected by the reflection plate 4 and received by the ultrasonic transmitter/receiver 8 to perform flaw detection on the tube wall.
このようにして、管壁は、テレビカメラおよび
超音波の両方によつて同時に検査される。 In this way, the tube wall is inspected simultaneously by both the television camera and the ultrasound.
上述した先行技術において重要なことは、反射
板４が光および超音波の両方を効率良く反射する
機能を備えていることである。 What is important in the prior art described above is that the reflecting plate 4 has a function of efficiently reflecting both light and ultrasonic waves.
従つて、この考案の目的は、テレビカメラおよ
び超音波の両方で管壁を検査するピグにおいて、
光および超音波の両方を効率良く反射させること
が可能な反射板を提供することにある。
Therefore, the purpose of this invention is to use a pig that inspects pipe walls using both a television camera and ultrasound.
An object of the present invention is to provide a reflector that can efficiently reflect both light and ultrasonic waves.
この考案は、管内面からの光をピグ本体内に設
けられたテレビカメラに入射させると同時に、前
記管内面で反射した超音波を前記ピグ本体内に設
けられた超音波送受信器に入射させるための、前
記テレビカメラおよび前記超音波送受信器と対向
して設けられた円錐形状の反射板において、前記
反射板を、基板と、前記基板の表面に形成した反
射膜とによつて構成したことに特徴を有するもの
である。
This device allows light from the inner surface of the tube to be incident on a television camera installed inside the pig body, and at the same time allows ultrasonic waves reflected from the inner surface of the tube to be incident on an ultrasonic transceiver installed inside the pig body. In the conical reflecting plate provided facing the television camera and the ultrasonic transmitter/receiver, the reflecting plate is constituted by a substrate and a reflective film formed on a surface of the substrate. It has characteristics.
次に、この考案の一実施態様の反射板を図面を
参照しながら説明する。
Next, a reflector according to an embodiment of this invention will be described with reference to the drawings.
第１図は、この考案の一実施態様の反射板の断
面図である。 FIG. 1 is a cross-sectional view of a reflector plate according to an embodiment of this invention.
第１図に示すように、反射板４は、中空円錐形
状の金属またはプラスチツク製の基板１１と、基
板１１の表面に真空蒸着またはメツキ等によつて
形成されたアルミニウム等からなる反射膜１２と
からなつている。 As shown in FIG. 1, the reflecting plate 4 includes a hollow conical substrate 11 made of metal or plastic, and a reflecting film 12 made of aluminum or the like formed on the surface of the substrate 11 by vacuum deposition or plating. It is made up of
このように構成されている反射板４を、第２図
に示したピグ本体１に取り付ければ、管６内面か
らの光は、反射膜１２によつて鏡面仕上げされた
反射板４で減衰することなく反射してテレビカメ
ラ５な入射し、同時に、管内面で反射した超音波
も反射板４で減衰することなく反射して超音波送
受信器８に入射する。 If the reflector 4 configured as described above is attached to the pig body 1 shown in FIG. At the same time, the ultrasonic wave reflected on the inner surface of the tube is also reflected without being attenuated by the reflector plate 4 and enters the ultrasonic transmitter/receiver 8.
これによつて、管壁をテレビカメラと超音波の
両方によつて正確に検査することができる。 This allows the tube wall to be accurately inspected by both a television camera and ultrasound.
以上説明したように、この考案によれば、光お
よび超音波の両方を効率良く反射させることがで
きるといつた有用な効果がもたらされる。
As explained above, this invention brings about useful effects such as being able to efficiently reflect both light and ultrasonic waves.
第１図は、この考案の一実施態様の反射板の断
面図、第２図は、先行技術のピグの断面図であ
る。
図面において、１……ピグ本体、２……シール
部材、３……開口、４……反射板、５……テレビ
カメラ、６……管、７……照明灯、８……超音波
送受信器、９……ロツド、１０……ケーブル、１
１……基板、１２……反射膜。
FIG. 1 is a cross-sectional view of a reflector according to an embodiment of the invention, and FIG. 2 is a cross-sectional view of a prior art pig. In the drawings, 1... Pig body, 2... Seal member, 3... Opening, 4... Reflector, 5... Television camera, 6... Tube, 7... Lighting light, 8... Ultrasonic transceiver. , 9... Rod, 10... Cable, 1
1...Substrate, 12...Reflection film.
Claims (1)
ビカメラに入射させると同時に、前記管内面で反
射した超音波を前記ピグ本体内に設けられた超音
波送受信器に入射させるための、前記テレビカメ
ラおよび前記超音波送受信器と対向して設けられ
た円錐形状の反射板において、前記反射板を、基
板と、前記基板の表面に形成した反射膜とによつ
て構成したことを特徴とする、管壁検査用ピグの
反射板。 the television for causing light from the inner surface of the tube to enter a television camera provided within the pig main body, and at the same time making ultrasonic waves reflected from the inner surface of the tube enter an ultrasonic transceiver provided within the pig main body; A conical reflecting plate provided facing the camera and the ultrasonic transmitter/receiver, characterized in that the reflecting plate is composed of a substrate and a reflective film formed on the surface of the substrate. Reflector for pipe wall inspection pigs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3378786U JPH0518693Y2 (en) | 1986-03-11 | 1986-03-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3378786U JPH0518693Y2 (en) | 1986-03-11 | 1986-03-11 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62146959U JPS62146959U (en) | 1987-09-17 |
| JPH0518693Y2 true JPH0518693Y2 (en) | 1993-05-18 |
Family
ID=30841718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3378786U Expired - Lifetime JPH0518693Y2 (en) | 1986-03-11 | 1986-03-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0518693Y2 (en) |
-
1986
- 1986-03-11 JP JP3378786U patent/JPH0518693Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62146959U (en) | 1987-09-17 |
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