JPS6367402B2 - - Google Patents
Info
- Publication number
- JPS6367402B2 JPS6367402B2 JP12232484A JP12232484A JPS6367402B2 JP S6367402 B2 JPS6367402 B2 JP S6367402B2 JP 12232484 A JP12232484 A JP 12232484A JP 12232484 A JP12232484 A JP 12232484A JP S6367402 B2 JPS6367402 B2 JP S6367402B2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- pit
- detection sensor
- drainage pump
- cable
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 9
- 239000003673 groundwater Substances 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000005086 pumping Methods 0.000 claims 1
- 238000000034 method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
- Electric Cable Installation (AREA)
Description
【発明の詳細な説明】
本発明は、地中ケーブルに何らかの損傷があつ
てケーブル内の絶縁油が入孔内ピツトに流入した
場合、この油が一般公共の下水道へ排出されるの
を阻止するシステムに関するものである。[Detailed Description of the Invention] The present invention prevents the insulating oil in the cable from being discharged into the public sewer system when there is some kind of damage to the underground cable and the insulating oil in the cable flows into the pit in the hole. It's about systems.
地中送電線路には数百ｍ間隔でケーブルの接
続、保守、監視の目的で人孔が設けられており、
この人孔には流入地下水の排水のため、ピツトと
流入水汲み出しのため排水ポンプが設けられてい
る。 Underground power transmission lines have manholes installed at intervals of several hundred meters for the purpose of cable connection, maintenance, and monitoring.
This manhole is equipped with a pit to drain the inflowing groundwater and a drainage pump to pump out the inflowing water.
しかし、従来のケーブルの洞道、人孔のピツト
には流入排出ポンプは上述のように設置されてい
るが、ケーブルに何等かの損傷があつて、ケーブ
ル中の絶縁油がピツト内に流入した場合、これを
検知し公共下水道へ誤つて排出されてしまうこと
を防ぐ措置としては監視員による点検に頼つてお
り、多人数の保守要員の確保が必要となる問題点
があつた。即ち油流入→検知→ポンプ停止のシス
テムが組み込まれていなかつたのが現状である。 However, although inflow and discharge pumps are installed in conventional cable tunnels and manhole pits as described above, there is some damage to the cables and the insulating oil in the cables flows into the pits. In such cases, the method of detecting this problem and preventing it from being erroneously discharged into the public sewer system relies on inspections by monitors, which poses the problem of requiring a large number of maintenance personnel. In other words, the current situation is that a system for oil inflow → detection → pump stop has not been incorporated.
本発明は上記の点に鑑みなされたもので、絶縁
油がピツト内に流入した場合、この油が一般公共
の下水道へ排出されることを防止するためのシス
テムで、その特徴は、ピツト内に設置の油検知セ
ンサーの油流入信号によつて、排水ポンプの駆動
回路を遮断し、排水ポンプの運転を停止し、絶縁
油が一般公共の下水道へ排出されることを防止す
ると同時に外部の適当な監視所へこの事態を知ら
せケーブル損傷を早期発見しケーブル事故を未然
に防止することにある。 The present invention was made in view of the above points, and is a system for preventing insulating oil from being discharged into the public sewer system when it flows into a pit. Based on the oil inflow signal from the installed oil detection sensor, the drive circuit of the drainage pump is cut off, the operation of the drainage pump is stopped, and the insulating oil is prevented from being discharged into the public sewer system. The purpose is to notify the monitoring station of this situation, detect cable damage at an early stage, and prevent cable accidents from occurring.
本発明の一実施例を第１図に示して説明する。
同図において、１はピツト、２は油検知センサ
ー、３は排水ポンプ、４はリレー、５はリレー接
点である。 An embodiment of the present invention will be described with reference to FIG.
In the figure, 1 is a pit, 2 is an oil detection sensor, 3 is a drain pump, 4 is a relay, and 5 is a relay contact.
本発明のシステムは油検知センサー２の油検知
出力によつて、排水ポンプ２の駆動回路がリレー
３の作動で、リレー接点５が離れてOFFの状態
になり、排水ポンプ３の運転はストツプする。こ
れが本発明の油排出防止システムの基本で、実際
には種々の方法が考えられることは言うまでもな
い。 In the system of the present invention, the drive circuit of the drain pump 2 is activated by the relay 3, and the relay contact 5 is separated and turned off by the oil detection output of the oil detection sensor 2, and the operation of the drain pump 3 is stopped. . This is the basis of the oil discharge prevention system of the present invention, and it goes without saying that various methods can be considered in practice.
また、油検知の方法としては、油の比重を利用
して油検知をするものや、油の電気伝導度、誘電
率を利用して油検知するものなど、どの様な検知
センサーでも良い。 Further, as a method for detecting oil, any detection sensor may be used, such as one that detects oil using the specific gravity of oil, or one that detects oil using electrical conductivity or dielectric constant of oil.
上記システムによつて、排水ポンプの運転がと
まつたのが判明すれば直ちにこれを適当な監視所
に通報して対策を講じ、絶縁油流出によるケーブ
ル損傷を早期に発見しケーブル事故を未然に防止
することができる効果は大きいものがある。 With the above system, if it is found that the drainage pump has stopped operating, it is immediately reported to the appropriate monitoring station and countermeasures are taken, and cable damage caused by insulating oil leakage is detected early to prevent cable accidents from occurring. There are great effects that can be prevented.
第１図は油排出防止システムの説明図で、排水
ポンプの駆動回路が遮断されたときの図である。
１……ピツト、２……油検知センサー、３……
排水ポンプ、４……リレー、５……リレー接点。
FIG. 1 is an explanatory diagram of the oil discharge prevention system, and is a diagram when the drive circuit of the drainage pump is cut off. 1... pit, 2... oil detection sensor, 3...
Drain pump, 4...Relay, 5...Relay contact.
Claims (1)
水のためのピツトに前記流入地下水を汲み出す排
水ポンプと、油検知センサーを配設し、地中ケー
ブルの絶縁油が前記ピツト内に流入してきた時、
前記油検知センサーの出力によつて排水ポンプの
駆動回路を遮断すること、を特徴とする油排出防
止システム。1 A drainage pump for pumping out the inflowing groundwater and an oil detection sensor are installed in a pit for draining inflowing groundwater provided in the entrance hole for the underground power transmission line, and the insulating oil of the underground cable flows into the pit. When I came,
An oil discharge prevention system characterized in that a drive circuit of a drainage pump is cut off based on the output of the oil detection sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59122324A JPS611213A (en) | 1984-06-14 | 1984-06-14 | Oil exhaust preventing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59122324A JPS611213A (en) | 1984-06-14 | 1984-06-14 | Oil exhaust preventing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS611213A JPS611213A (en) | 1986-01-07 |
| JPS6367402B2 true JPS6367402B2 (en) | 1988-12-26 |
Family
ID=14833146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59122324A Granted JPS611213A (en) | 1984-06-14 | 1984-06-14 | Oil exhaust preventing system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS611213A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4953766B2 (en) * | 2006-11-02 | 2012-06-13 | 中国電力株式会社 | Structure of power transmission system using OF cable |
| JP5116300B2 (en) * | 2006-12-22 | 2013-01-09 | 中国電力株式会社 | Cable duct drainage system |
| EP2612332A1 (en) | 2010-08-31 | 2013-07-10 | 3M Innovative Properties Company | Electrical cable arrangement |
| CN112186680B (en) * | 2020-08-25 | 2021-10-01 | 杭州水电建筑集团有限公司 | Electric power tunnel |
-
1984
- 1984-06-14 JP JP59122324A patent/JPS611213A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS611213A (en) | 1986-01-07 |
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