JPH0343813Y2 - - Google Patents
Info
- Publication number
- JPH0343813Y2 JPH0343813Y2 JP5802083U JP5802083U JPH0343813Y2 JP H0343813 Y2 JPH0343813 Y2 JP H0343813Y2 JP 5802083 U JP5802083 U JP 5802083U JP 5802083 U JP5802083 U JP 5802083U JP H0343813 Y2 JPH0343813 Y2 JP H0343813Y2
- Authority
- JP
- Japan
- Prior art keywords
- pressure relief
- lid
- trough
- disaster prevention
- pressure
- 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
- 230000002265 prevention Effects 0.000 claims description 12
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 4
- 239000003063 flame retardant Substances 0.000 description 4
- 239000002990 reinforced plastic Substances 0.000 description 4
- 239000002360 explosive Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Laying Of Electric Cables Or Lines Outside (AREA)
Description
【考案の詳細な説明】
本考案は、超高圧ケーブルが収納される防災ト
ラフに関し、特にその放圧手段に関するものであ
る。[Detailed Description of the Invention] The present invention relates to a disaster prevention trough in which ultra-high voltage cables are housed, and in particular to its pressure relief means.
防災トラフは、コンクリート又は難燃性強化プ
ラスチツク製のトラフ本体と難燃性強化プラスチ
ツク製の蓋体とから成り、この蓋体はトラフ本体
に被ぶせられ結束バンドによつてトラフ本体に気
密に密着されている。この防災トラフはその難燃
性と気密性とによつてケーブル地絡時に発生する
ケーブルの火災が拡がるのを防止している。一
方、ケーブルの送電容量の増大によつて地絡時に
爆発性のガスが発生し、トラフを破壊しケーブル
の延焼が拡がるのでこのガスを放圧し放圧後直ち
に密閉する放圧手段を必要とする。従来技術の放
圧手段は、蓋体に間隔をあけて設けられた複数の
放圧弁から成つているが、この放圧弁は10Kg／cm2
以上の高い内圧に耐えることができないので破壊
しケーブルを延焼する欠点があつた。 The disaster prevention trough consists of a trough body made of concrete or flame-retardant reinforced plastic and a lid body made of flame-retardant reinforced plastic. has been done. This disaster prevention trough prevents the spread of a cable fire that occurs in the event of a cable ground fault due to its flame retardancy and airtightness. On the other hand, as the cable's power transmission capacity increases, explosive gas is generated in the event of a ground fault, which destroys the trough and spreads the cable fire. Therefore, a pressure relief means is required to relieve the pressure of this gas and immediately seal it after the pressure is released. . The pressure relief means of the prior art consists of a plurality of pressure relief valves provided at intervals on the lid, and these pressure relief valves have a pressure of 10Kg/cm 2
Since it could not withstand such high internal pressure, it had the disadvantage that it could break and cause the cable to catch fire.
本考案の目的は、高い内圧を確実に放圧するこ
とができ、放圧後直ちに気密に保つことができる
防災トラフを提供することにある。 An object of the present invention is to provide a disaster prevention trough that can reliably release high internal pressure and that can be kept airtight immediately after the pressure is released.
本考案の実施例を図面を参照してのべると、第
１図乃至第４図は本考案に係る防災トラフ１０を
示し、この防災トラフ１０はコンクリート製又は
難燃性強化プラスチツク製のトラフ本体１２と難
燃性強化プラスチツク製の蓋体１４とから成り、
蓋体１４は第３図及び第４図に示すように断面Ｈ
字形の接合フアスナー１６，１６′を介してトラ
フ本体１２に被ぶせられている。トラフ本体１２
の接合部には接続カラー１８が被ぶせられて気密
を保つている。尚、第３図及び第４図において符
号２０はケーブル、２２は支持部材２４に支持さ
れた水冷管である。 Embodiments of the present invention will be described with reference to the drawings. FIGS. 1 to 4 show a disaster prevention trough 10 according to the present invention, and this disaster prevention trough 10 has a trough body 12 made of concrete or flame-retardant reinforced plastic. and a lid body 14 made of flame-retardant reinforced plastic,
The lid body 14 has a cross section H as shown in FIGS. 3 and 4.
It is covered over the trough body 12 via letter-shaped joining fasteners 16, 16'. Trough body 12
A connecting collar 18 is placed over the joint to maintain airtightness. In addition, in FIGS. 3 and 4, reference numeral 20 is a cable, and 22 is a water-cooled pipe supported by a support member 24.
放圧手段２６は、蓋体１４を構成する複数の放
圧蓋２８から成り、各放圧蓋の一端はステンレス
スチールの結束バンド３０によつてトラフ本体１
２に気密に密着され、他端はゴム製の弾性バンド
３２によつてトラフ本体１２に気密に密着されて
いる。 The pressure relief means 26 consists of a plurality of pressure relief lids 28 that constitute the lid body 14, and one end of each pressure relief lid is connected to the trough body 1 by a stainless steel cable tie 30.
2, and the other end is hermetically sealed to the trough body 12 by an elastic band 32 made of rubber.
隣合う放圧蓋２８はその内側に跨つて設けられ
た接合蓋３４によつて気密に閉じられている。こ
の接合蓋は接合フアスナー１６，１６′間に強固
に固定されている。 Adjacent pressure relief lids 28 are hermetically closed by a joining lid 34 provided across the inside thereof. This joint lid is firmly fixed between the joint fasteners 16, 16'.
放圧手段２６の放圧蓋２８は通常では第２図の
実線で示すようにバンド３０，３２によつて閉じ
られているので防災トラフ１０内は気密が保たれ
ている。ケーブルに地絡が起つて爆発性ガスが発
生すると、放圧蓋２８は第２図の想像線で示すよ
うに弾性バンド３２を伸ばしつつ端部が持上げら
れるのでこのガスを放圧するが、圧力が下降する
と、放圧蓋２８は弾性バンド３２によつて直ちに
閉じられて気密を保つので外部の空気が防災トラ
フ１０内に流入することがなく、ケーブルの延焼
を防止することができる。 Since the pressure release lid 28 of the pressure release means 26 is normally closed by bands 30 and 32 as shown by the solid line in FIG. 2, the inside of the disaster prevention trough 10 is kept airtight. When a ground fault occurs in the cable and explosive gas is generated, the pressure relief lid 28 stretches the elastic band 32 and lifts the end as shown by the imaginary line in FIG. 2, releasing the gas. When lowered, the pressure relief cover 28 is immediately closed by the elastic band 32 to maintain airtightness, so that outside air does not flow into the disaster prevention trough 10, and the spread of fire to the cable can be prevented.
本考案によれば、上記のように、ケーブルの地
絡時に発生するガスの圧力を有効に放圧し、放圧
後は直ちに気密を保つて空気が流入することがな
いのでケーブルの延焼を有効に防止することがで
きる実益がある。 According to the present invention, as mentioned above, the pressure of gas generated when a cable is grounded is effectively released, and after the pressure is released, it is immediately kept airtight and no air enters, which effectively prevents the spread of fire in the cable. There are practical benefits that can be prevented.
第１図乃至第４図は本考案に係る防災トラフの
上面図、側面図、第２図のＡ−A′線及びＢ−
B′線断面図である。
１０……防災トラフ、１２……トラフ本体、１
４……蓋体、２６……放圧手段、２８……放圧
蓋、３０……結束バンド、３２……弾性バンド、
３４……接合蓋。
Figures 1 to 4 are a top view and a side view of the disaster prevention trough according to the present invention, and lines A-A' and B- in Figure 2.
It is a sectional view taken along the line B'. 10...Disaster prevention trough, 12...Trough body, 1
4... Lid body, 26... Pressure relief means, 28... Pressure relief lid, 30... Binding band, 32... Elastic band,
34...Joint lid.
Claims (1)
蓋体と、内部の圧力を放圧する放圧手段とから成
る防災トラフにおいて、前記放圧手段は前記蓋体
を構成する複数の放圧蓋から成り、各放圧蓋の一
端は結束バンドによつて前記トラフ本体に気密に
密着され他端は弾性バンドによつて前記トラフ本
体に気密に密着され、隣合う放圧蓋はその内側に
跨つて設けられた接合蓋によつて気密に閉じられ
ていることを特徴とする防災トラフ。 In a disaster prevention trough comprising a trough body, a lid covering the trough body, and a pressure relief means for relieving internal pressure, the pressure relief means is composed of a plurality of pressure relief lids forming the lid, One end of each pressure relief lid is hermetically sealed to the trough body by a cable tie, the other end is hermetically sealed to the trough body by an elastic band, and adjacent pressure relief lids are provided so as to straddle the inside thereof. A disaster prevention trough characterized by being airtightly closed by a jointed lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5802083U JPS59164444U (en) | 1983-04-20 | 1983-04-20 | disaster prevention trough |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5802083U JPS59164444U (en) | 1983-04-20 | 1983-04-20 | disaster prevention trough |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59164444U JPS59164444U (en) | 1984-11-05 |
| JPH0343813Y2 true JPH0343813Y2 (en) | 1991-09-13 |
Family
ID=30188308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5802083U Granted JPS59164444U (en) | 1983-04-20 | 1983-04-20 | disaster prevention trough |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59164444U (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6848643B2 (en) * | 2017-04-19 | 2021-03-24 | 東京電力ホールディングス株式会社 | Cut surface protection method for metal bands |
| KR102637197B1 (en) * | 2019-09-30 | 2024-02-15 | 유 이 엔지니어링 피티이 리미티드 | cable gutter system |
-
1983
- 1983-04-20 JP JP5802083U patent/JPS59164444U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59164444U (en) | 1984-11-05 |
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