JPH06113438A - Method and structure for water stoppage of conduit line for cable, and the like - Google Patents
Method and structure for water stoppage of conduit line for cable, and the likeInfo
- Publication number
- JPH06113438A JPH06113438A JP3113662A JP11366291A JPH06113438A JP H06113438 A JPH06113438 A JP H06113438A JP 3113662 A JP3113662 A JP 3113662A JP 11366291 A JP11366291 A JP 11366291A JP H06113438 A JPH06113438 A JP H06113438A
- Authority
- JP
- Japan
- Prior art keywords
- water
- cable
- conduit
- expandable
- rubber material
- 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.)
- Granted
Links
Landscapes
- Sewage (AREA)
- Laying Of Electric Cables Or Lines Outside (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、主として通信あるいは
電力ケーブルを地中に敷設するための管路がマンホール
内に開口する開口部分の止水方法とその構造に関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to a method of stopping water at an opening portion of a pipe line for laying a communication or power cable in the ground into a manhole and its structure.
【0002】[0002]
【従来の技術】現在、通信ケーブルを地中において敷設
するための管路のマンホール内への出口開口部分におい
て、管路を伝わって来る流入水に対する止水方法として
は、2液型の発泡ウレタン注入タイプなどがある。2. Description of the Related Art At present, at the outlet opening portion of a conduit for laying a communication cable in the ground into a manhole, a two-component type urethane foam is used as a method of stopping water flowing in through the conduit. There are injection types.
【0003】[0003]
【発明が解決しようとする課題】しかし、上記従来の構
造では、材料強度が弱く、実際には水圧に負け管路口よ
り流れ出てしまい止水効果がない。また2液混合及び注
入のための作業性の悪さや接着面の汚れなどにより、管
路を構成する保護管と通信ケーブルとの間の上記発泡ウ
レタンによる注入接着が完全で無い場合が多く、結果と
して止水効果を挙げられず、多くのマンホールに水が溜
まり、作業の際には時間を掛けて道路排水用側溝などに
排水作業をしているのが現状である。その為、保守点検
の際には、毎回溜まった水をポンプアップしたり、又、
管路を伝わった漏水は、低地のマンホールに集中し、溢
れ出たり、マンホール蓋を持ち上げたりして、付近の通
行に支障を及ぼす危険があった。その他、ボルトなどの
締め付けで発生する応力を利用して止水させる止水栓も
考案されているが、管路の内径とケーブル外径との間隙
が充分ない場合には使用不可能である。また、上記従来
の止水方法では、施工部品が多く、特別な施工工具も必
要とされていたり、2種以上の液体の攪拌混合を必要と
したりする等、部品の紛失や施工工程の煩雑さがあり、
施工実態に合わず、広く使用されていなかった。そこ
で、本発明の止水方法及び構造では、特別な施工工具を
必要とせず、容易且つ短時間に施工出来また押し込みに
対する反発力やボルトなどの締め付けで発生する応力に
よることなく、強力確実にケーブル等の地中管路のマン
ホール開口部を止水させることを目的としている。However, in the above-mentioned conventional structure, the material strength is weak, and in actuality, it loses the water pressure and flows out from the conduit opening, so that there is no water blocking effect. Further, due to poor workability for mixing and injecting the two liquids, dirt on the adhesive surface, and the like, the injection and adhesion of the urethane foam between the protective tube forming the conduit and the communication cable is often not perfect, resulting in However, water is not collected in many manholes, and it is the current situation that water is drained to road drainage gutters etc. over time when working. Therefore, during maintenance and inspection, pump up the accumulated water every time,
The water leaked through the pipeline was concentrated in a lowland manhole, overflowed, and the manhole cover was lifted, which could impede the passage of traffic in the vicinity. In addition, although a water stopcock for stopping water by utilizing the stress generated by tightening a bolt or the like has been devised, it cannot be used if there is not a sufficient gap between the inner diameter of the conduit and the outer diameter of the cable. Further, in the above-described conventional water stopping method, there are many construction parts, special construction tools are required, and stirring and mixing of two or more kinds of liquids are required. For example, the parts are lost and the construction process is complicated. There is
It was not widely used because it did not match the actual construction conditions. Therefore, in the water stopping method and structure of the present invention, a special construction tool is not required, construction can be performed easily and in a short time, and a strong and reliable cable can be obtained without relying on the repulsive force against pushing or the stress generated by tightening bolts. The purpose is to stop the manhole opening of underground pipes such as.
【0004】[0004]
【課題を解決させるための手段】上記の課題を解決させ
るための手段を、実施例に対応する図面を参照して説明
する。すなわち、本発明の止水方法は、内腔にケーブル
あるいは内管等の長体よりなる内装体が敷設されており
マンホール3の内壁面に開口する管路2の、前記マンホ
ール開口部分2aの内装体外周と管路2内周との間を密
閉して止水するケーブル等の管路の止水方法において、
前記開口部分2aの内装体外周と管路2内周との間に、
吸水樹脂組成物を混練一体化させた水膨張性ゴム材又は
熱可塑性エラストマー材よりなる環状の水膨張部8の前
後に非水膨張性ゴム材又は熱可塑性エラストマー材より
なる環状の非水膨張部が一体成形されてなる止水栓4を
嵌合させたことを特徴としている。また、上記の止水方
法において、内装体の外周に、まず吸水樹脂組成物を混
練一体化させた水膨張性ゴム材又は熱可塑性エラストマ
ー材よりなるスペーサー9,19を設け、このスペーサ
ー外周とマンホール開口部分2aの管路2内周との間
に、上記止水栓4を嵌合させるようにしてもよい。さら
に、本発明の止水構造は、内腔にケーブルあるいは内管
等の長体よりなる内装体が敷設されておりマンホール3
の内壁面に開口する管路2の、前記開口部分2aの内装
体外周と管路2内周との間に略環状の止水栓4を嵌合し
て止水するケーブル等の管路の止水構造において、前記
止水栓4は、吸水樹脂組成物を混練一体化させた水膨張
性ゴム材又は熱可塑性エラストマー材よりなる環状の水
膨張部8の前後に非水膨張性ゴム材又は熱可塑性エラス
トマー材よりなる環状の非水膨張部が一体成形されてな
り、該止水栓4には、その内装体挿通孔5から半径方向
に延びる外周面に達する半割切込6が形成されると共に
他のか所には内装体挿通孔から半径方向に延びる外周面
に達しない1本又は複数本の短切込7が形成されている
ことを特徴としている。また、上記の止水構造におい
て、内装体の外周に、まず吸水樹脂組成物を混練一体化
させた水膨張性ゴム材又は熱可塑性エラストマー材より
なるスペーサー9,19を設け、このスペーサー外周と
マンホール開口部分2aの管路2内周との間に、上記止
水栓4を嵌合させるようにしてもよく、上記スペーサー
9,19を用いる場合には、上記止水栓4の短切込7は
なくてもよい。Means for solving the above problems will be described with reference to the drawings corresponding to the embodiments. That is, in the water stopping method of the present invention, the interior of the manhole opening portion 2a of the conduit 2 having the elongated inner body such as a cable or an inner pipe laid in the inner cavity and opening to the inner wall surface of the manhole 3 is used. In a method of stopping water in a conduit such as a cable for sealing water between the outer circumference of the body and the inner circumference of the conduit 2
Between the outer periphery of the inner body of the opening portion 2a and the inner periphery of the conduit 2,
A ring-shaped non-water-expandable portion made of a non-water-expandable rubber material or a thermoplastic elastomer material is provided before and after a ring-shaped water-expandable portion 8 made of a water-expandable rubber material or a thermoplastic elastomer material in which a water-absorbent resin composition is kneaded and integrated. It is characterized in that a water stop plug 4 formed integrally with is fitted. Further, in the above water stopping method, spacers 9 and 19 made of a water-expandable rubber material or a thermoplastic elastomer material in which a water-absorbent resin composition is kneaded and integrated are first provided on the outer periphery of the interior body, and the outer periphery of the spacer and the manhole are provided. The water stop plug 4 may be fitted between the opening portion 2a and the inner circumference of the conduit 2. Further, in the water-stop structure of the present invention, an inner body made of a long body such as a cable or an inner pipe is laid in the inner cavity, and the manhole 3
Of a conduit such as a cable that is fitted with a substantially annular water stop plug 4 between the outer periphery of the inner body of the opening 2a and the inner periphery of the conduit 2 of the conduit 2 that opens to the inner wall surface of In the water-stop structure, the water-stop plug 4 includes a non-water-expandable rubber material before and after an annular water-expansion part 8 made of a water-expandable rubber material or a thermoplastic elastomer material in which a water-absorbent resin composition is kneaded and integrated. An annular non-water expansion part made of a thermoplastic elastomer material is integrally molded, and a half cut 6 reaching the outer peripheral surface extending in the radial direction from the inner body insertion hole 5 is formed in the water stopcock 4. In addition, one or a plurality of short cuts 7 that do not reach the outer peripheral surface extending in the radial direction from the inner body insertion hole are formed at other places. Further, in the above water-stop structure, spacers 9 and 19 made of a water-expandable rubber material or a thermoplastic elastomer material in which a water-absorbent resin composition is kneaded and integrated are first provided on the outer circumference of the interior body, and the outer circumference of the spacer and the manhole are provided. The water stop plug 4 may be fitted between the opening portion 2a and the inner periphery of the pipe line 2. When the spacers 9 and 19 are used, the short cut 7 of the water stop plug 4 is used. It does not have to be.
【0005】[0005]
【作 用】上記の構成において、管路の開口部分からマ
ンホール内に延出される内装体の外周に止水栓4をその
半割切込6を開いて嵌合させ、そのまま止水栓4を内装
体外周に沿って滑らせて管路の開口部分2aに押し込
み、内装体外周と管路内周との隙間を閉鎖させる。この
閉鎖初期は弛るい状態であっても、後に管路内に浸入し
て来た水分によって止水栓4の水膨張部8が内外周方向
に膨張し、管路内周及び内装体外周に密着して、強力な
止水作用を行なわせる。尚、この止水栓4の水膨張部8
の膨張は、前後の非水膨張部によって前後への膨張が阻
止されていることから、内外周方向への膨張が大きくな
り、しかも前後に膨張突出してち切れる等の不具合もな
い。また、比較的脆い材質の水膨張部8が前後の非膨張
部によって保護されていることからその取り扱いが容易
である。また、止水栓に外周に達しない短切込7を設け
た構造では、内装体にセットする際に容易に押し広げら
れ、作業性がよい。また、スペーサー9,19を使用す
ることで、多種類の径の内装体に、少ない種類の止水栓
で対応出来、光ケーブル等の軽量のケーブルを内装体と
する場合は、移動防止の効果も期待出来る。[Operation] In the above-mentioned configuration, the water stopper 4 is fitted to the outer periphery of the interior body extending from the opening of the pipe into the manhole by opening the half-cut notch 6, and the water stopper 4 is directly attached. It is slid along the outer circumference of the inner body and pushed into the opening 2a of the conduit to close the gap between the outer circumference of the inner body and the inner circumference of the conduit. Even if it is in a slack state at the initial stage of closing, the water inflating portion 8 of the water stopcock 4 expands in the inner and outer peripheral directions by the water that has infiltrated into the conduit later, so that the inner periphery of the conduit and the outer periphery of the interior body are expanded. Adheres tightly and has a strong water blocking effect. In addition, the water expansion part 8 of this water stopper 4
In the expansion, since the front and rear non-water expansion portions prevent the expansion in the front and rear directions, the expansion in the inner and outer peripheral directions becomes large, and there is no inconvenience such as expansion and protrusion in the front and rear parts. Further, since the water expansion part 8 made of a relatively brittle material is protected by the front and rear non-expansion parts, its handling is easy. Further, in the structure in which the short cut 7 that does not reach the outer circumference is provided in the water stopcock, it can be easily spread when set in the interior body, and workability is good. Also, by using the spacers 9 and 19, a small number of types of water stoppers can be used for interior bodies of various types of diameters, and when a lightweight cable such as an optical cable is used as the interior body, it also has an effect of preventing movement. I can expect it.
【0006】[0006]
【実施例】以下、本発明の実施例を図面を参照して具体
的に説明する。 第1の実施例について、図1は、本発明の第1の実施例
に係る止水方法又は構造を用いて止水したマンホール開
口部の斜視図、図2は、同要部の拡大断面図、図3及び
図4は、同第1の実施例に用いた止水栓の背面図と側面
図である。通常、内装体としてのケーブル1を挿通した
ケーブル保護管としての管路2は、地中に複数個、平行
配列してあって、それぞれ、マンホール3の側壁で開口
されている。この管路2の開口部分2aに嵌合される止
水栓4は、図2に示すように、マンホール3の側壁3a
に当接する円環形フランジ4aの背面に短円筒状の栓体
部4bを一体に突出形成したもので、このフランジ4a
と栓体部4bを貫通する挿通孔5は、止水栓4の中心軸
の一方に偏心して形成され、その他方の大径肉厚側では
挿通孔5の内周から半径方向に外周に達する半割切込6
を設けている。また、外周に達しない半径方向の複数本
の短切込7が形成されている。そして、上記栓体部4b
の軸方向の中間には、環状に形成された水膨張部8が介
設されて一体に形成されている。しかして、止水栓4
は、上記水膨張部8を除く部分すなわちその前後を通常
の非水膨張性ゴム材あるいは熱可塑性エラストマー材で
構成する非膨張部とするが、上記水膨張部8は吸水性樹
脂(水膨張性樹脂)を混練させた水膨張性ゴム材あるい
は水膨張性熱可塑性エラストマー材で作られる。この場
合、水膨張部8と他の非水膨張部とは共加硫することが
望ましい。したがって、管路2内で偏よって配置される
ケーブル1に対して半割切込6の部分を開いてケーブル
挿通孔5にケーブル1を嵌合させた状態で、そのまま上
記栓体部4bを開口部分2a内に嵌挿すると、嵌挿時は
弛るい状態であっても、後に管路2内に浸入して来た水
分によって水膨張部8が半径方向に膨張し、ケーブル外
周と管路内壁に密着し、必要とする嵌合圧を得ることに
なる。Embodiments of the present invention will be specifically described below with reference to the drawings. Regarding the first embodiment, FIG. 1 is a perspective view of a manhole opening portion that is water-stopped by using the water-stopping method or structure according to the first embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of the same main portion. FIGS. 3 and 4 are a rear view and a side view of the water stopcock used in the first embodiment. Normally, a plurality of conduits 2 as cable protection tubes, through which a cable 1 as an interior body is inserted, are arranged in parallel in the ground, and are opened at the side walls of the manhole 3, respectively. As shown in FIG. 2, the water stopcock 4 fitted into the opening 2a of the conduit 2 has a side wall 3a of the manhole 3, as shown in FIG.
A short cylindrical plug body portion 4b is integrally formed on the back surface of the annular flange 4a that abuts against the flange 4a.
The through hole 5 penetrating the plug body portion 4b and the plug body portion 4b is formed eccentrically on one side of the central axis of the water stopcock 4, and on the other large-diameter wall side, reaches from the inner circumference of the insertion hole 5 to the outer circumference in the radial direction. Half cut 6
Is provided. Also, a plurality of short cuts 7 in the radial direction that do not reach the outer circumference are formed. Then, the plug portion 4b
A water expansion portion 8 formed in an annular shape is interposed and integrally formed in the middle of the axial direction of. And then, the stopcock 4
Is a non-expandable part composed of a normal non-water-expandable rubber material or a thermoplastic elastomer material, that is, the part excluding the water-expandable part 8 is the non-expandable part. It is made of a water-expandable rubber material or a water-expandable thermoplastic elastomer material in which a resin) is kneaded. In this case, it is desirable that the water expansion section 8 and the other non-water expansion section be co-vulcanized. Therefore, in the state in which the portion of the half cutout 6 is opened with respect to the cable 1 which is eccentrically arranged in the conduit 2 and the cable 1 is fitted in the cable insertion hole 5, the plug body portion 4b is opened as it is. When it is inserted into the portion 2a, the water expansion portion 8 expands in the radial direction by the water that has infiltrated into the conduit 2 later even if it is in a loose state at the time of insertion, and the outer circumference of the cable and the inner wall of the conduit are expanded. To obtain the required fitting pressure.
【0007】第2、第3の実施例について、図5は、本
発明の第2の実施例に係る止水方法又は構造に用いる止
水栓の嵌合状態を示す斜視図、図6は、同断面図、図7
は、同第3の実施例の断面図である。第2及び第3の実
施例では、ケーブル1の外周に、上記と同様の水膨張性
材料よりなるスペーサー9,19を設け、その外周に上
記と同様の止水栓4を嵌合したものである。しかして、
図5,図6の第2の実施例に用いるスペーサー9は、テ
ープ状のものを巻回したものである。また、図7の第3
の実施例に用いるスペーサー19は、奥側を小径とした
断面契型の小円筒型に成形したものである。現実のケー
ブル1は、移動防止やマンホール蓋直下を避ける為、管
路口より曲げられ、また経時的にも変位し、管路2に対
し同芯上になく偏っている重量のある同軸ケーブルなど
は人力によって容易に同芯上に移動出来ない。ところが
本発明の上記各実施例の止水栓4では、管路2の内面に
接する外周円とケーブル1の外面と接する内周円とで形
成される実際の間隙状態に近く、無理な力の掛からない
偏芯形状としている為、ケーブルを移動する必要もな
く、装着が容易であり、又、移動の為の余計な力を加え
る事がないのでケーブルを損傷する危険性もない。尚、
本発明の止水方法及び構造は、通信ケーブル及び電力ケ
ーブルとこれらの管路としての埋設管との間の隙間のみ
ならず、ガス管の道路埋設下における2重管などの内外
管との隙間の止水にも適応出来る。また、図1におい
て、マンホール3に開口する各管路2のうち、少なくと
も1つにケーブル1が挿通されていない場合には、該空
の管路2の開口部分に止水栓4を直接嵌合させると共
に、この止水栓4の挿通孔5に、盲蓋をして止水閉鎖さ
せるようにすれば良い。Regarding the second and third embodiments, FIG. 5 is a perspective view showing a fitted state of a water stopcock used in the water stopping method or structure according to the second embodiment of the present invention, and FIG. The same sectional view, FIG.
[FIG. 7] is a sectional view of the third embodiment. In the second and third embodiments, the outer periphery of the cable 1 is provided with the spacers 9 and 19 made of the same water-expandable material as described above, and the same water stopper 4 as described above is fitted to the outer periphery thereof. is there. Then,
The spacer 9 used in the second embodiment of FIGS. 5 and 6 is a tape-shaped one wound. In addition, the third of FIG.
The spacer 19 used in this example is formed into a small cylindrical shape with a cross-section that has a small diameter on the back side. The actual cable 1 is bent from the conduit opening and displaced over time in order to prevent movement and directly below the manhole cover, and a heavy coaxial cable that is not concentric with the conduit 2 is biased. It cannot be easily moved on the same axis due to human power. However, in the water stopcock 4 of each of the above-described embodiments of the present invention, the force is close to the actual gap state formed by the outer circumference circle contacting the inner surface of the conduit 2 and the inner circumference circle contacting the outer surface of the cable 1, and an unreasonable force is applied. Since it has an eccentric shape that does not hang up, it is not necessary to move the cable, it is easy to mount, and there is no risk of damaging the cable because no extra force is applied for movement. still,
INDUSTRIAL APPLICABILITY The water stopping method and structure of the present invention is not limited to the clearance between the communication cable and the power cable and the buried pipe as these conduits, but also the clearance between the gas pipe and the inner and outer pipes such as a double pipe under the road buried. It can also be applied to stop water. Further, in FIG. 1, when the cable 1 is not inserted into at least one of the conduits 2 that open to the manhole 3, the water stop plug 4 is directly fitted to the opening portion of the empty conduit 2. At the same time, the water blocking plug 4 may be closed with a blind lid.
【0008】[0008]
【発明の効果】以上説明したように、本願の請求項1乃
至5の発明の止水方法及び構造によれば、止水栓4とし
て、吸水膨張するゴム材又は熱可塑性エラストマー材を
使用している為、材料強度があり、発泡ウレタンのよう
に、水圧に負けて流れ出る事もなく、又、ボルトなどの
締め付けで発生する応力に因らず、吸水膨張による膨張
力を止水作用に利用した為、単純な製品形状で押し込み
力も少なくてよい。更に、その他の部品点数や工具など
も必要としない為、容易に又短時間で施工可能となる。
そして、止水栓4は、水膨張部8が非水膨張部に挟まれ
て一体成形されているので、膨張方向が規制され、止水
方向に対し、有効に作用させる事ができるという優れた
効果がある。また、本願の請求項3及び5の発明によれ
ば、止水栓4を既設ケーブルなどにセットする為、外周
から内周までに達する切り込みは半割切込6、1か所で
あり、必要以上に分割されず、紛失する恐れもない。
又、太い同軸ケーブルなどの止水栓4の場合は、肉薄部
が3mm〜10mm程度なので必要がないが、セットす
る際には容易に押し広げられる様に、外周まで達しない
短切込7を入れることにより作業性が良い。また、本願
の請求項2及び4の発明によれば、水膨張性材料よりな
るスペーサー9,19を使用しているので、多種類のケ
ーブルに数少ない止水栓4で対応出来、光ケーブル等の
軽量のケーブルの場合は移動防止の効果も可能となる。As described above, according to the water blocking method and structure of the invention of claims 1 to 5 of the present invention, the water blocking plug 4 is made of a rubber material or a thermoplastic elastomer material which expands by absorbing water. Since it has material strength, it does not flow out due to water pressure like urethane foam, and the expansion force due to water absorption expansion is used for water stopping action regardless of the stress generated by tightening bolts etc. Therefore, the pushing force may be small with a simple product shape. Furthermore, since other number of parts and tools are not required, the work can be performed easily and in a short time.
Since the water expansion part 8 is integrally formed by sandwiching the water expansion part 8 between the non-water expansion parts, the water stop plug 4 is excellent in that the expansion direction is regulated and can effectively act in the water stop direction. effective. Further, according to the inventions of claims 3 and 5 of the present application, since the water stopcock 4 is set on the existing cable or the like, the number of cuts reaching from the outer circumference to the inner circumference is one half cut 6, and one is required. There is no risk of loss as it is not divided into more parts.
Also, in the case of a water stopcock 4 such as a thick coaxial cable, it is not necessary because the thin portion is about 3 mm to 10 mm, but a short cut 7 that does not reach the outer periphery so that it can be easily spread when setting it. Workability is good by putting it in. Further, according to the inventions of claims 2 and 4 of the present application, since the spacers 9 and 19 made of a water-expandable material are used, it is possible to cope with many kinds of cables with a few water stop plugs 4 and light weight of optical cables and the like. In the case of the cable, the effect of preventing movement is also possible.
【第1図】本発明の第1の実施例に係る止水方法又は構
造を用いて止水したマンホール開口部の斜視図FIG. 1 is a perspective view of a manhole opening which is stopped by using a water stopping method or structure according to a first embodiment of the present invention.
【第2図】同要部の拡大断面図FIG. 2 is an enlarged cross-sectional view of the main part of the same.
【第3図】同第1の実施例に用いた止水栓の背面図FIG. 3 is a rear view of the water stopcock used in the first embodiment.
【第4図】同止水栓の側面図[Fig. 4] Side view of the water stopcock
【第5図】同第2の実施例に用いた止水栓の嵌合状態を
示す斜視図FIG. 5 is a perspective view showing a fitted state of the water stopcock used in the second embodiment.
【第6図】同断面図[Fig. 6] Same sectional view
【第7図】同第3の実施例に用いた止水栓の嵌合状態を
示す斜視図である。FIG. 7 is a perspective view showing a fitted state of the water stopcock used in the third embodiment.
1 内装体としてのケーブル、 2 管路、 3 マン
ホール、4 止水栓、 5 挿通孔、 6 半割切込、
7 短切込、8 水膨張部、 9,19 スペーサ
ー。1 cable as an internal body, 2 pipe lines, 3 manholes, 4 water stopcocks, 5 insertion holes, 6 half cuts,
7 Short cut, 8 Water expansion part, 9, 19 Spacer.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 新庄 博 東京都中央区京橋一丁目18番1号 シーア イ化成株式会社内 (72)発明者 杉本 祐司郎 東京都千代田区内幸町一丁目1番6号 日 本電信電話株式会社内 (72)発明者 杉原 文哉 東京都千代田区内幸町一丁目1番6号 日 本電信電話株式会社内 (72)発明者 山根 富男 東京都千代田区内幸町一丁目1番6号 日 本電信電話株式会社内 (72)発明者 池本 敏郎 東京都千代田区内幸町一丁目1番6号 日 本電信電話株式会社内 (72)発明者 石井 正夫 東京都江東区佐賀1丁目15番7号 岩野物 産株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroshi Shinjo 1-18-1 Kyobashi, Chuo-ku, Tokyo Shiai Kasei Co., Ltd. (72) Inventor Yujiro Sugimoto 1-1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo Japan (72) Inventor Fumiya Sugihara 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Japan Telegraph and Telephone (72) Inventor Tomio Yamane 1-6, Uchiyuki-cho, Chiyoda-ku, Tokyo Date Inside the Telegraph and Telephone Corporation (72) Inventor Toshiro Ikemoto 1-6, Uchisaiwaicho, Chiyoda-ku, Tokyo Japan Telegraph and Telephone Corporation (72) Masao Ishii 1-15-7 Saga, Koto-ku, Tokyo Iwano Bussan Co., Ltd.
Claims (5)
りなる内装体が敷設されておりマンホールの内壁面に開
口する管路の、前記マンホール開口部分の内装体外周と
管路内周との間を密閉して止水するケーブル等の管路の
止水方法において、 前記開口部分の内装体外周と管路内周との間に、吸水樹
脂組成物を混練一体化させた水膨張性ゴム材又は熱可塑
性エラストマー材よりなる環状の水膨張部の前後に非水
膨張性ゴム材又は熱可塑性エラストマー材よりなる環状
の非水膨張部が一体成形されてなる止水栓を嵌合させた
ことを特徴とするケーブル等の管路の止水方法。1. An inner circumference of an elongated body such as a cable or an inner pipe is laid in an inner cavity, and an outer circumference of the inner circumference of the manhole opening portion and an inner circumference of the pipeline of a conduit opening to an inner wall surface of a manhole. In a water stopping method for a pipe such as a cable that seals and seals the space between the inner periphery of the inner body of the opening and the inner periphery of the pipe, a water-expanding property obtained by kneading and integrating a water-absorbing resin composition. A water stop plug made by integrally molding an annular non-water-expandable part made of a non-water-expandable rubber material or a thermoplastic elastomer material was fitted before and after an annular water-expandable part made of a rubber material or a thermoplastic elastomer material. A method of stopping water in a conduit such as a cable, which is characterized in that
りなる内装体が敷設されておりマンホールの内壁面に開
口する管路の、前記開口部分の内装体外周と管路内周と
の間を密閉して止水するケーブル等の管路の止水方法に
おいて、 前記開口部分の内装体外周に、吸水樹脂組成物を混練一
体化させた水膨張性ゴム材又は熱可塑性エラストマー材
よりなるスペーサーを設け、 前記開口部分のスペーサー外周と管路内周との間に、吸
水樹脂組成物を混練一体化させた水膨張性ゴム材又は熱
可塑性エラストマー材よりなる環状の水膨張部の前後に
非水膨張性ゴム材又は熱可塑性エラストマー材よりなる
環状の非水膨張部が一体成形されてなる止水栓を嵌合さ
せたことを特徴とするケーブル等の管路の止水方法。2. An inner body made of a long body such as a cable or an inner pipe is laid in an inner cavity, and a conduit opening to an inner wall surface of a manhole is formed between the outer circumference of the inner body and the inner circumference of the conduit. In a method of stopping water in a conduit such as a cable that seals water between ends by sealing, a water-expandable rubber material or a thermoplastic elastomer material obtained by kneading and integrating a water-absorbent resin composition on the outer periphery of the inner body of the opening portion. A spacer is provided, and between the outer circumference of the spacer at the opening and the inner circumference of the conduit, before and after the annular water-expansion part made of the water-expandable rubber material or the thermoplastic elastomer material in which the water-absorbent resin composition is kneaded and integrated. A water stopping method for a conduit such as a cable, characterized in that a water stopping plug formed by integrally molding an annular non-water expanding portion made of a non-water expanding rubber material or a thermoplastic elastomer material is fitted.
りなる内装体が敷設されておりマンホールの内壁面に開
口する管路の、前記開口部分の内装体外周と管路内周と
の間に略環状の止水栓を嵌合して止水するケーブル等の
管路の止水構造において、 前記止水栓は、吸水樹脂組成物を混練一体化させた水膨
張性ゴム材又は熱可塑性エラストマー材よりなる環状の
水膨張部の前後に非水膨張性ゴム材又は熱可塑性エラス
トマー材よりなる環状の非水膨張部が一体成形されてな
り、該止水栓には、その内装体挿通孔から半径方向に延
びる外周面に達する半割切込が形成されると共に他のか
所には内装体挿通孔から半径方向に延びる外周面に達し
ない1本又は複数本の短切込が形成されていることを特
徴とするケーブル等の管路の止水構造。3. An inner body made of an elongated body such as a cable or an inner pipe is laid in an inner cavity, and a conduit opening to the inner wall surface of a manhole is formed between the outer circumference of the inner body and the inner circumference of the conduit. In a water-stop structure of a conduit such as a cable that is fitted with a substantially annular water-stopper to stop water, the water-stopper is a water-expandable rubber material or a heat-insulating material in which a water-absorbent resin composition is kneaded and integrated. An annular non-water-expandable portion made of a non-water-expandable rubber material or a thermoplastic elastomer material is integrally molded before and after the annular water-expandable portion made of a plastic elastomer material, and the inner body is inserted into the water stopcock. Half-cuts are formed to reach the outer peripheral surface extending in the radial direction from the hole, and one or more short cuts are formed in other locations that do not reach the outer peripheral surface extending in the radial direction from the inner body insertion hole. A water-stop structure for pipes such as cables.
りなる内装体が敷設されておりマンホールの内壁面に開
口する管路の、前記開口部分の内装体外周と管路内周と
の間に略環状の止水栓を嵌合して止水するケーブル等の
管路の止水構造において、 前記止水栓は、吸水樹脂組成物を混練一体化させた水膨
張性ゴム材又は熱可塑性エラストマー材よりなる環状の
水膨張部の前後に非水膨張性ゴム材又は熱可塑性エラス
トマー材よりなる環状の非水膨張部が一体成形されてな
り、 前記止水栓の内装体挿通孔と内装体との間には、吸水樹
脂組成物を混練一体化させた水膨張性ゴム材又は熱可塑
性エラストマー材よりなるスペーサーが設けられている
ことを特徴とするケーブル等の管路の止水構造。4. An inner body made of a long body such as a cable or an inner pipe is laid in an inner cavity, and a pipe opening to an inner wall surface of a manhole is formed between the outer circumference of the inner body and the inner circumference of the pipe. In a water-stop structure of a conduit such as a cable that is fitted with a substantially annular water-stopper to stop water, the water-stopper is a water-expandable rubber material or a heat-insulating material in which a water-absorbent resin composition is kneaded and integrated. An annular non-water-expandable part made of a non-water-expandable rubber material or a thermoplastic elastomer material is integrally molded before and after the annular water-expandable part made of a plastic elastomer material, and the inner body insertion hole and the inner part of the water stopcock are formed. A water-stop structure for a conduit such as a cable, characterized in that a spacer made of a water-expandable rubber material or a thermoplastic elastomer material in which a water-absorbent resin composition is kneaded and integrated is provided between the body and the body.
半径方向に延びる外周面に達する半割切込が形成されて
いることを特徴とする請求項4記載のケーブル等の管路
の止水構造。5. The conduit for a cable or the like according to claim 4, wherein the water shutoff plug is formed with a half-cut notch reaching an outer peripheral surface extending in a radial direction from the inner body insertion hole. Water stop structure.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3113662A JPH0753014B2 (en) | 1991-04-19 | 1991-04-19 | Water stopping method and structure of pipes such as cables |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3113662A JPH0753014B2 (en) | 1991-04-19 | 1991-04-19 | Water stopping method and structure of pipes such as cables |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH06113438A true JPH06113438A (en) | 1994-04-22 |
JPH0753014B2 JPH0753014B2 (en) | 1995-06-05 |
Family
ID=14617978
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3113662A Expired - Lifetime JPH0753014B2 (en) | 1991-04-19 | 1991-04-19 | Water stopping method and structure of pipes such as cables |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0753014B2 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005282763A (en) * | 2004-03-30 | 2005-10-13 | C I Kasei Co Ltd | Water stop packing material and water stop structure for pipeline using this material |
KR100608978B1 (en) * | 2006-02-10 | 2006-08-08 | (주) 종합건축사사무소 동일건축 | Waterproofing block for concrete wall passing cable and a method installing the same |
JP2009156370A (en) * | 2007-12-27 | 2009-07-16 | Inaba Denki Sangyo Co Ltd | Sound insulation sheet for manifold |
JP2012037036A (en) * | 2010-08-12 | 2012-02-23 | Furukawa Electric Co Ltd:The | Wall penetrating structure of piping |
KR20180076802A (en) * | 2016-12-28 | 2018-07-06 | 한국가스공사 | Sealing cap for protection pipe of ground wires |
JP2020153457A (en) * | 2019-03-20 | 2020-09-24 | 早川ゴム株式会社 | Foundation penetration pipe structure |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE533744C2 (en) | 2009-02-04 | 2010-12-21 | Roxtec Ab | Pipe or cable entry with modularized modules |
-
1991
- 1991-04-19 JP JP3113662A patent/JPH0753014B2/en not_active Expired - Lifetime
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005282763A (en) * | 2004-03-30 | 2005-10-13 | C I Kasei Co Ltd | Water stop packing material and water stop structure for pipeline using this material |
KR100608978B1 (en) * | 2006-02-10 | 2006-08-08 | (주) 종합건축사사무소 동일건축 | Waterproofing block for concrete wall passing cable and a method installing the same |
JP2009156370A (en) * | 2007-12-27 | 2009-07-16 | Inaba Denki Sangyo Co Ltd | Sound insulation sheet for manifold |
JP2012037036A (en) * | 2010-08-12 | 2012-02-23 | Furukawa Electric Co Ltd:The | Wall penetrating structure of piping |
KR20180076802A (en) * | 2016-12-28 | 2018-07-06 | 한국가스공사 | Sealing cap for protection pipe of ground wires |
JP2020153457A (en) * | 2019-03-20 | 2020-09-24 | 早川ゴム株式会社 | Foundation penetration pipe structure |
Also Published As
Publication number | Publication date |
---|---|
JPH0753014B2 (en) | 1995-06-05 |
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