JPS62294962A - Damage detector - Google Patents
Damage detectorInfo
- Publication number
- JPS62294962A JPS62294962A JP61138110A JP13811086A JPS62294962A JP S62294962 A JPS62294962 A JP S62294962A JP 61138110 A JP61138110 A JP 61138110A JP 13811086 A JP13811086 A JP 13811086A JP S62294962 A JPS62294962 A JP S62294962A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- transmission line
- buried pipe
- damage
- pipe
- 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.)
- Pending
Links
- 230000006378 damage Effects 0.000 title claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 230000003287 optical effect Effects 0.000 claims abstract description 5
- 239000013307 optical fiber Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 4
- 238000000576 coating method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000011358 absorbing material Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Landscapes
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
Description
【発明の詳細な説明】
発明の詳細な説明
〔発明の利用分野〕
本発明は地中埋設管の損傷探知装置に係り、特に、地中
埋設管が何らかの外力によって損傷するのを事前に探知
できるようにした損傷探知装置に関する。[Detailed Description of the Invention] Detailed Description of the Invention [Field of Application of the Invention] The present invention relates to a damage detection device for underground pipes, and in particular, it is capable of detecting in advance damage to underground pipes caused by some external force. The present invention relates to a damage detection device.
一般に、ガス管等を地中に埋設すると、その管には様々
な要因による作用を受けて、場合によっては破損するこ
とがあった。これを予め探知しようとして各種の対策が
なされている。Generally, when gas pipes and the like are buried underground, the pipes are subject to the effects of various factors, and in some cases may break. Various measures have been taken to detect this in advance.
例えば、埋設管の腐食に対する対策としては、特開昭５
０−１０６９５号公報、特開昭５２−４７５４０号公報
が挙げられ、腐食による′管の損傷を確実に探知してい
る。また、外力による埋設管の破壊を検知するものとし
ては、特開昭５８−６３８４４号公報、特開昭５８−６
３８４５号公報が挙げられるが、これは埋設管が直接損
傷を受けるまで破壊を探知できず、しかも検出信号が微
弱であり、かつ損傷場所の特定も困難であるという問題
点があった。For example, as a countermeasure against corrosion of buried pipes,
No. 0-10695 and Japanese Unexamined Patent Publication No. 52-47540, which reliably detect damage to tubes due to corrosion. In addition, as a device for detecting the destruction of buried pipes due to external force, Japanese Patent Application Laid-Open No. 58-63844 and Japanese Patent Application Laid-Open No. 58-6
Publication No. 3845 is mentioned, but this has problems in that destruction cannot be detected until the buried pipe is directly damaged, the detection signal is weak, and it is difficult to identify the location of the damage.
本発明の目的は、埋設管に対する外力による損傷を予め
探知できる損傷探知装置を提供することにある。An object of the present invention is to provide a damage detection device that can detect damage caused by external forces to buried pipes in advance.
本発明は、埋設管の外周又はその近傍に一定の信号を流
せる伝送路を密に配設し、これらの信号を流して外力に
よる損傷を探知しようとするものである。The present invention attempts to detect damage caused by external force by closely disposing transmission paths capable of transmitting certain signals on or near the outer periphery of a buried pipe, and transmitting these signals.
以下、本発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
第１図は本発明の第１実施例を示す断面図であり、第２
図は同実施例の要部を示す断面図である。FIG. 1 is a sectional view showing a first embodiment of the present invention, and a second embodiment of the present invention is shown in FIG.
The figure is a sectional view showing the main parts of the same embodiment.
図において、埋設管１の外周に、塗覆装２を施し１次い
で塗覆装２の外側に電気信号又は光信号を伝達する絶縁
線、給電線又は光フアイバーケーブル等の伝送路３を、
単独に又は組合せた状態で埋設管１の長手方向に信号を
伝え得る様に密に設置し、さらにその伝送路３の外側に
外装４を設けたものである。In the figure, a coating 2 is applied to the outer periphery of a buried pipe 1, and a transmission line 3 such as an insulated wire, a power supply line, or an optical fiber cable for transmitting electrical signals or optical signals is attached to the outside of the coating 2.
The underground pipes 1 are installed densely so that signals can be transmitted in the longitudinal direction of the buried pipe 1, either singly or in combination, and an exterior 4 is provided on the outside of the transmission line 3.
このような構成とすることにより、本実施例は、伝送路
３の一端から信号を流し、この信号を伝送路３の他端で
受信し、信号が断となった時に埋設管１に何らから外力
が作用したものとして損傷を探知するものである。With such a configuration, in this embodiment, a signal is sent from one end of the transmission line 3, this signal is received at the other end of the transmission line 3, and when the signal is disconnected, nothing is connected to the buried pipe 1. This is to detect damage as if it were caused by an external force.
この第１実施例によれば、埋設管１の外周にある伝送路
３が破壊された状態で埋設管１の破壊と判断されるので
、これに対応することが早く確実にできる。According to this first embodiment, since it is determined that the buried pipe 1 is destroyed when the transmission line 3 on the outer periphery of the buried pipe 1 is destroyed, it is possible to quickly and reliably deal with this problem.
第３図は本発明の第２実施例を示す要部断面図である。FIG. 3 is a sectional view of a main part showing a second embodiment of the present invention.
第２実施例が第１実施例と異なるところは、伝・送路３
の上下に電磁波吸収材５．６を設けた点に為り、その他
は第１実施例と変更がない。The difference between the second embodiment and the first embodiment is that the transmission/transmission path 3
The only difference is that electromagnetic wave absorbing materials 5 and 6 are provided above and below the frame, but otherwise there is no change from the first embodiment.
かかる第２実施例によれば、第１実施例と同様の作用効
果を奏する外に、埋設管１側及び空中・地中側からの電
磁波の影響を減することができる。According to the second embodiment, in addition to achieving the same effects as the first embodiment, it is possible to reduce the influence of electromagnetic waves from the buried pipe 1 side and from the air/underground side.
第４図は本発明の第３実施例を示す断面図である。FIG. 4 is a sectional view showing a third embodiment of the present invention.
第３実施例が第１実施例を異なるところは、埋設管１の
外周に設けた塗覆装２の表面に、各線又は光ケーブル等
の伝送路３を単独又は複合したものを保護袋４でサンド
イッチ構造としたものを取付けた点が異なる。The third embodiment differs from the first embodiment in that a transmission line 3 such as each line or optical cable, singly or in combination, is sandwiched between a protective bag 4 on the surface of a coating 2 provided on the outer periphery of a buried pipe 1. The difference is that a structure is attached.
第３実施例によれば第１実施例と同様の作用効果が得ら
れる外、伝送路３の取付けが簡単になる。According to the third embodiment, not only the same effects as the first embodiment can be obtained, but also the installation of the transmission line 3 is simplified.
第５図は第３図の実施例の変形例を示す要部断面図であ
る。FIG. 5 is a sectional view of a main part showing a modification of the embodiment shown in FIG. 3.
第５図に示す実施例が第３図のものと異なるところは、
電波吸収材６を伝送路３の外側に設け、伝送路３の内側
の電波吸収材５を省略した点にある。また、この例の場
合、電波吸収体６は、保護袋４の内側ではなく外側に設
けてもよい。The difference between the embodiment shown in FIG. 5 and the embodiment shown in FIG. 3 is as follows.
The radio wave absorbing material 6 is provided outside the transmission line 3, and the radio wave absorbing material 5 inside the transmission line 3 is omitted. Furthermore, in this example, the radio wave absorber 6 may be provided outside the protective bag 4 instead of inside.
この例によれば、空中・地中からの電磁波の影響も防止
できる。また、この例によれば費用、製作工数が第３図
のものより少なくて済む利点もある。According to this example, the influence of electromagnetic waves from the air and underground can also be prevented. Further, this example has the advantage that the cost and manufacturing man-hours are less than that of the example shown in FIG.
第６図は第４図の実施例の応用例であり、伝送路３の束
を外装７で覆って束群とし、これら束群をヒンジ８で連
結したものである。FIG. 6 is an application example of the embodiment shown in FIG. 4, in which the bundle of transmission lines 3 is covered with an exterior 7 to form a bundle group, and these bundle groups are connected by a hinge 8.
この構成例によれば、埋設管１の外周に容易に取り付け
ることができる。According to this configuration example, it can be easily attached to the outer periphery of the buried pipe 1.
第７図は本発明の第４実施例を示す断面図である。FIG. 7 is a sectional view showing a fourth embodiment of the present invention.
塗覆装２を施した埋設管１から距離を置いて、掘削具等
の浸入を予知する様、検知線又は、ケーブル等の伝送路
３を単独材又は複合材の外装材９でサンドイッチ状の板
体とした線束板１０を、埋設管１の上部及び両側に設置
したものである。At a distance from the buried pipe 1 coated with coating 2, the transmission line 3 such as a detection wire or cable is sandwiched with a sheathing material 9 made of a single material or a composite material so as to prevent the intrusion of excavation tools, etc. A wire bundle plate 10 in the form of a plate is installed above and on both sides of the buried pipe 1.
この第４実施例によれば、既設埋設管に対しても本発明
を適用できる。According to this fourth embodiment, the present invention can also be applied to existing buried pipes.
第８図は、第７図の長手方向を示したものであり、線束
板１０及び線束板１ｏ同士を接続点１１において接続し
、必要とする長さに亘り予知機能を持たせた実施例であ
る。なお、１２は支管である。FIG. 8 shows the longitudinal direction of FIG. 7, and shows an embodiment in which the wire bundle plate 10 and the wire bundle plate 1o are connected at the connection point 11 to provide a predictive function over the required length. be. Note that 12 is a branch pipe.
第９図は第８図の実施例の変形例であり、線束板１０に
、ガス等の抜は用としての孔１３を設けたものである。FIG. 9 shows a modification of the embodiment shown in FIG. 8, in which the wire bundle plate 10 is provided with holes 13 for venting gas and the like.
第１０図は本発明の第５実施例であり、検出系を示すブ
ロック図である。FIG. 10 is a block diagram showing a detection system according to a fifth embodiment of the present invention.
第１０図において、２１は電源、２２は切換装置、２３
はアダプタ（電流検出回路）、２４はディスプレイ、２
５は伝送路３に接続される信号線、２６は伝送路３の接
地線である。In FIG. 10, 21 is a power source, 22 is a switching device, 23
is an adapter (current detection circuit), 24 is a display, 2
5 is a signal line connected to the transmission line 3, and 26 is a ground line of the transmission line 3.
電源２１より、切替装置２２を通して信号線２５に送り
、膜設管１に沿って設置され一定の距離でアース２６の
とっである伝送路３に信号を送る。電源側に設けた電流
検出回路（アダプタ）２３は、点３０で掘削具４０によ
りダメージ（Ｄａｍａｇｅ）を受けた場合、線又はケー
ブル束等の伝送路３が切れ、電流の不流部が生ずる。こ
の情報をアダプタ２３を通しデスプレイ２４を表示し、
この情報を信号線５０を経由し中央に伝達するものであ
る。一方、光ケーブルの伝送路３が切れた場合１反射波
信号がアダプタ２３を通り以下上記と同様の処理表示が
出来る様にしたものである。A signal is sent from a power source 21 to a signal line 25 through a switching device 22, and is sent to a transmission line 3 installed along the membrane pipe 1 and connected to a ground 26 at a certain distance. If the current detection circuit (adapter) 23 provided on the power source side is damaged by the excavating tool 40 at a point 30, the transmission line 3 such as a wire or cable bundle is cut, and a current no-flow area occurs. This information is displayed on the display 24 through the adapter 23,
This information is transmitted to the center via the signal line 50. On the other hand, when the transmission line 3 of the optical cable is cut, one reflected wave signal passes through the adapter 23, and the same processing and display as above can be performed.
第１０図によれば、掘削具４０に信号検出４１の機能を
抜いた構成で十分に損傷探知できるが、これに対する応
用例として掘削具４０に取付けられた信号検出器４１に
より点３０における信号をキャッチし、掘削具４ｏの動
作を停止させ、一方において埋設管１側においても伝送
路３を通じて異常を把握できるようにしてもよい。According to FIG. 10, it is possible to sufficiently detect damage by removing the function of the signal detection 41 from the excavating tool 40, but as an application example, the signal at point 30 is detected by the signal detector 41 attached to the excavating tool 40. It may be possible to detect the abnormality and stop the operation of the excavating tool 4o, and on the other hand, the abnormality may also be detected on the buried pipe 1 side through the transmission line 3.
第１１図は本発明の第６実施例であり、検出系を示すブ
ロック図である。第６実施例が第５実施例と異なるとこ
ろは、電源２１より信号、＄！２５を介して埋設管１に
沿って設置しである伝送路３に信号を送り、伝送路３の
他端に電流検出器２７を設置した点にある。いま、点３
ｏが掘削具４０等によりダメージ（Ｄａｍａｇｅ）を受
けた場合、電流検出器２７中に線束に無通電群が生じる
。これをアダプタ２３を通し、デスプレイ２４に表示す
ると共に信号線５０により中央に情報を伝達し異常を把
握するものである。FIG. 11 is a block diagram showing a detection system according to a sixth embodiment of the present invention. The difference between the sixth embodiment and the fifth embodiment is that the power supply 21 generates a signal, $! 25, a signal is sent to a transmission line 3 installed along the buried pipe 1, and a current detector 27 is installed at the other end of the transmission line 3. Now point 3
o is damaged by the digging tool 40 or the like, a non-energized group occurs in the wire bundle in the current detector 27. This information is displayed on the display 24 through the adapter 23, and the information is transmitted to the center via the signal line 50 to detect abnormalities.
また、他の応用例として、点１０にＤａｍａｇａが生じ
た場合、伝送路３の信号を検出器４１にと検知し、掘削
具４０の動作を停止させる。これと共に、デスプレイ２
４での表示、信号線５０からの情報により埋設管側でも
異常を把握し、速かな対応を可能としたものである。Further, as another application example, when a damage occurs at the point 10, the signal on the transmission line 3 is detected by the detector 41, and the operation of the excavating tool 40 is stopped. Along with this, display 2
4 and the information from the signal line 50, it is possible to grasp abnormalities on the buried pipe side and take prompt action.
以上述べたように本発明によれば、埋設管の周辺に伝送
路を埋設管軸方向に配設し、この伝送路が破損したこと
により埋設管の損傷を予め探知できるようにしたので、
埋設管の損傷が防止でき、埋設管の保護ができる効果が
ある。As described above, according to the present invention, a transmission line is arranged around the buried pipe in the axial direction of the buried pipe, and damage to the buried pipe can be detected in advance due to damage to the transmission line.
This has the effect of preventing damage to the buried pipe and protecting the buried pipe.
第１図は本発明の第１実施例を示す断面図、第２図は同
実施例の要部を示す断面図、第３図は本発明の第２実施
例を示す要部断面図、第４図は本発明の第３実施例を示
す断面図、第５図は第２実施例の応用例を示す要部断面
図、第６図は第３実施例の応用例を示す断面図、第７図
は本発明の第４実施例を示す断面図、第８図は第４実施
例の配設例を示す側面図、第９図は第８図の実施例の変
形例を示す断面図、第１０図は本発明の第５実施例を示
す構成図、第１１図は本発明の第６実施例を示す構成図
である。
１・・埋設管、３・・・伝送路、１０・・・線束板。
亭１図
荊２図
も３図
も４−図
荊Ｓ図 来。。
￥′１図
￥８図
帛ｑ図FIG. 1 is a sectional view showing a first embodiment of the present invention, FIG. 2 is a sectional view showing a main part of the same embodiment, and FIG. 4 is a sectional view showing a third embodiment of the present invention, FIG. 5 is a sectional view of main parts showing an application example of the second embodiment, FIG. 6 is a sectional view showing an application example of the third embodiment, 7 is a sectional view showing a fourth embodiment of the present invention, FIG. 8 is a side view showing an arrangement example of the fourth embodiment, FIG. 9 is a sectional view showing a modification of the embodiment of FIG. FIG. 10 is a block diagram showing a fifth embodiment of the present invention, and FIG. 11 is a block diagram showing a sixth embodiment of the present invention. 1... Buried pipe, 3... Transmission line, 10... Wire bundle plate. Figure 1 of the pavilion, figure 2, figure 3, and figure 4 of figure S. . ￥'1 figure ￥8 figure q figure
Claims (1)
す伝送路を配設したことを特徴とする損傷探知装置。 ２、特許請求の範囲第１項において、前記伝送路は、電
気信号を伝送する線路であることを特徴とする損傷探知
装置。 ３、特許請求の範囲第１項において、前記伝送路は、光
信号を伝送する線路であることを特徴とする損傷探知装
置。 ４、埋設管の外周に、該管の長手方向に所定の信号を流
す伝送路を配設し、該伝送路に信号を供給する供給手段
と、該伝送路に流れる信号を検出する検出手段とを設け
、該検出手段により該伝送路が損傷したことを信号がな
いことで検出するようにしたことを特徴とする損傷探知
装置。[Scope of Claims] 1. A damage detection device characterized in that a transmission line is provided on the outer periphery of a buried pipe to send a predetermined signal in the longitudinal direction of the pipe. 2. The damage detection device according to claim 1, wherein the transmission line is a line for transmitting an electric signal. 3. The damage detection device according to claim 1, wherein the transmission line is a line for transmitting an optical signal. 4. A transmission line for passing a predetermined signal in the longitudinal direction of the buried pipe is arranged on the outer periphery of the buried pipe, supply means for supplying the signal to the transmission line, and detection means for detecting the signal flowing through the transmission line. A damage detection device characterized in that the detection means detects damage to the transmission line based on the absence of a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61138110A JPS62294962A (en) | 1986-06-16 | 1986-06-16 | Damage detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61138110A JPS62294962A (en) | 1986-06-16 | 1986-06-16 | Damage detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62294962A true JPS62294962A (en) | 1987-12-22 |
Family
ID=15214185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61138110A Pending JPS62294962A (en) | 1986-06-16 | 1986-06-16 | Damage detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62294962A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012060804A (en) * | 2010-09-10 | 2012-03-22 | Chugoku Electric Power Co Inc:The | Excavating work monitoring system and excavating work monitoring method |
-
1986
- 1986-06-16 JP JP61138110A patent/JPS62294962A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012060804A (en) * | 2010-09-10 | 2012-03-22 | Chugoku Electric Power Co Inc:The | Excavating work monitoring system and excavating work monitoring method |
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