JPS6245867Y2 - - Google Patents
Info
- Publication number
- JPS6245867Y2 JPS6245867Y2 JP16647880U JP16647880U JPS6245867Y2 JP S6245867 Y2 JPS6245867 Y2 JP S6245867Y2 JP 16647880 U JP16647880 U JP 16647880U JP 16647880 U JP16647880 U JP 16647880U JP S6245867 Y2 JPS6245867 Y2 JP S6245867Y2
- Authority
- JP
- Japan
- Prior art keywords
- cover
- filling
- anticorrosive agent
- pipe fitting
- 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.)
- Expired
Links
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 4
- 238000005304 joining Methods 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 238000005260 corrosion Methods 0.000 description 11
- 230000007797 corrosion Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 239000013521 mastic Substances 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004210 cathodic protection Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000002075 main ingredient Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Description
【考案の詳細な説明】
ガス輸送管などの地下埋設導管の耐用年数を延
ばすための一手段に、導管網を電気絶縁状態にブ
ロツク化し、ブロツク毎に例えばマグネシウム等
の流電陽極を接続する等により電気防食を施す方
法が知られている。かかる場合、分離された導管
同志を連通接続するのに電気絶縁性の管継手が用
いられるが、この絶縁継手も周辺土壌や地下水か
ら確実に防食する必要性が高い。一方、電気絶縁
化のために導管を切断分離するに輸送流体の漏洩
阻止状態で切断分離することができるノーブロー
活管方式の絶縁継手が既に開発されている。[Detailed explanation of the invention] One way to extend the service life of underground conduits such as gas transport pipes is to divide the conduit network into electrically insulated blocks and connect a galvanic anode such as magnesium to each block. A method of applying cathodic protection is known. In such cases, electrically insulating pipe joints are used to connect the separated conduits, but it is highly necessary that these insulating joints also be reliably protected from corrosion from surrounding soil and groundwater. On the other hand, a no-blow live pipe type insulating joint has already been developed that can cut and separate conduits for electrical insulation while preventing leakage of transport fluid.
絶縁継手を防食するに従来では、プチルゴムを
主成分とする不定形性のマスチツクを絶縁継手外
周面に万遍なく押付け付着させることにより、一
般に凹凸によつて複雑な外郭形状をもつ継手外面
形状をシンプルなものに整形した上、その外周に
デンゾーテープ、防食テープを巻き付けるといつ
た主段が採られていた。しかしこの場合、マスチ
ツクの付着作業、テープ巻付け作業が非常に煩わ
しく、多大な時間を要する上に防食仕上げの完壁
さを欠きやすい難点があつた。殊にノーブロー活
管方式の絶縁継手は工法上形状が非常に複雑であ
るものが多く、作業性、防食性の両面で一層問題
となつていた。 Conventionally, in order to prevent corrosion of insulated joints, an amorphous mastic mainly made of plastic rubber is evenly pressed and adhered to the outer circumferential surface of the insulated joint. The main stage was made simple and wrapped with Denzo tape and anti-corrosion tape around its outer circumference. However, in this case, the work of attaching the mastic and the work of winding the tape were very troublesome and took a lot of time, and the corrosion-proofing finish was likely to be incomplete. In particular, many of the no-blow live pipe type insulated joints have very complicated shapes due to the construction method, which has become a problem in terms of both workability and corrosion resistance.
本考案は、以上のような実情に鑑みて、絶縁継
手に対する防食施工を非常に作業性よくかつ防食
性も高く、しかも防食剤の経済使用をも可能とす
る防食剤充填用カバーを提供せんとするものであ
る。 In view of the above-mentioned circumstances, the present invention aims to provide a cover for filling an anti-corrosion agent that makes it possible to perform anti-corrosion work on insulated joints with excellent workability and high anti-corrosion properties, and also enables economical use of the anti-corrosive agent. It is something to do.
本考案による防食剤充填用カバーは、分離され
た導管同志を接続するための電気絶縁性管継手を
囲繞させることにより、前記管継手外周面との間
にその管継手外周面の全体又はほぼ全体を被覆す
る防食剤充填用空間を形成するものであつて、前
記管継手の外周面形状に沿う又はほぼ沿う形状を
有し、かつ前記管継手に対しそれの側方から装着
可能な開き姿勢とそれを囲繞する閉じ姿勢とに切
換自在に構成してあることを特徴とする。 The anticorrosion agent filling cover according to the present invention surrounds an electrically insulating pipe joint for connecting separated conduits, so that the entire or almost the entire outer peripheral surface of the pipe joint is surrounded by an electrically insulating pipe joint for connecting separated conduits. forming a space for filling an anticorrosive agent to cover the pipe fitting, the pipe fitting having a shape that follows or substantially follows the outer peripheral surface shape of the pipe fitting, and having an open position that allows it to be attached to the pipe fitting from the side thereof. It is characterized by being configured so that it can be switched freely between a closed position and a closed position surrounding it.
即ち、このカバーを開き姿勢にして絶縁性管継
手にその側方から装着したのち閉じ姿勢とし、も
つて注入口を除いて全体を外部に対し液密化する
状態で管継手を囲繞させて前記の空間を形成し、
この空間内に防食剤を注入充填するといつた極め
て簡単な作業により、絶縁性管継手を防食被覆す
ることができる。しかもこのカバーは絶縁性管継
手の外周面形状に沿つた又はほぼ沿つた形状を呈
しているから、防食剤の流動性故に、防食剤を前
記の空間の隅々まで隅なく行き渡らせることがで
きることとも相俟つて絶縁性管継手外周面に防食
剤を均一又はほぼ均一な肉厚状態で被覆させるこ
とができるし、この肉厚を所期の防食にとつて必
要な最小限のものに設定すること、言い換えると
前記空間における管継手とカバーとの隙間寸法を
そのように設定することにより防食剤使用量を必
要最小限にすることができる。 That is, the cover is placed in an open position and attached to the insulating pipe joint from the side, and then closed, and the cover is placed around the pipe joint in a state where the entire body is liquid-tight to the outside except for the inlet. form a space of
The insulating pipe joint can be coated with an anti-corrosion coating by an extremely simple operation such as injecting and filling the space with an anti-corrosion agent. Moreover, since this cover has a shape that follows or almost follows the shape of the outer peripheral surface of the insulating pipe joint, the fluidity of the anticorrosive agent makes it possible to spread the anticorrosive agent to every corner of the space. Together with this, it is possible to coat the outer peripheral surface of the insulating pipe joint with an anticorrosive agent with a uniform or almost uniform thickness, and this thickness can be set to the minimum necessary for the desired corrosion protection. In other words, by setting the gap between the pipe joint and the cover in the space in this manner, the amount of anticorrosive agent used can be minimized.
即ち、従来手段に比し作業性を大巾に向上でき
ながら防食性をも向上し得、かつ防食剤の経済使
用をも可能とすることができるもので、特にノー
ブロー活管方式に用いられる形状の複雑な絶縁性
管継手に対して適用した場合は上記効果を顕著に
発揮し得る。 In other words, it is possible to greatly improve workability compared to conventional means, improve corrosion resistance, and enable economical use of anticorrosive agents, especially for shapes used in no-blow live tube systems. When applied to complex insulating pipe joints, the above effects can be significantly exhibited.
以下本考案の実施態様を、ノーブロー活管方式
の場合を例にとつて説明する。 Embodiments of the present invention will be described below using a no-blow live tube system as an example.
第１図、第２図は地下に埋設された都市ガス輸
送導管その他の導管Ｐの途中部分を導管Ｐよりも
大径でかつ多数の流通孔１ａを形成した回転ソー
１にて切断分離する状態を示す。Ｂは二つ割りさ
れた管継手で、導管Ｐに被嵌した状態で、その対
接フランジ２，２をボルト・ナツト３にて緊締す
ることにより導管Ｐに対し気密、水密的に固定さ
れている。４はサドル、５はシヤツター台、６は
スライドシヤツター板、７はシヤツター台５固定
用の鎖、８は穿孔機Ｄ固定金具、９は固定金具８
固定用のチエーン、１０は切断確認弁、１１はソ
ーシヤフト、１２は減速機、１３はエアモータ、
１４は送りネジである。管継手Ｂの両脇において
二つ割りの押輪Ｃ，Ｃが導管Ｐに被嵌固定されて
いる。穿孔機Ｄはその下部の回転ソー１収納空間
が外気に対し気密、水密化されており、シヤツタ
ー板６を開け導管Ｐより大径のソー１にて導管Ｐ
を二つに切断分離したあとでも輸送流体が漏洩す
ることはない。ソー１には流通孔１ａがあるため
回転切断中も流体輸送は保たれる。切断分離後ソ
ー１を引上げ、シヤツター板６を閉じ、穿孔機Ｄ
を取外しその代わりにプラグ装着機（図示省略）
を取付け、シヤツター板６を再び開き管継手Ｂの
口１５にプラグ１６（第９図参照）を螺合して管
継手Ｂを気密、水密化し、その後、管継手Ｂと一
対の押輪Ｃ，Ｃを残して他の部材を全て取除く。 Figures 1 and 2 show a state in which a midway portion of a city gas transmission pipe or other pipe P buried underground is cut and separated using a rotary saw 1 having a larger diameter than the pipe P and having a large number of flow holes 1a. shows. Reference numeral B designates a pipe joint split into two parts, which is fitted onto the conduit P and fixed to the conduit P in an airtight and watertight manner by tightening the opposing flanges 2, 2 with bolts and nuts 3. 4 is a saddle, 5 is a shutter stand, 6 is a slide shutter plate, 7 is a chain for fixing the shutter stand 5, 8 is a drilling machine D fixing bracket, 9 is a fixing bracket 8
A fixing chain, 10 a disconnection confirmation valve, 11 a saw shaft, 12 a speed reducer, 13 an air motor,
14 is a feed screw. On both sides of the pipe joint B, two push rings C and C are fitted and fixed onto the conduit P. The storage space for the rotary saw 1 at the bottom of the drilling machine D is airtight and watertight against the outside air, and the shutter plate 6 is opened and the saw 1, which has a larger diameter than the conduit P, is used to cut the conduit P.
The transport fluid will not leak even after cutting and separating into two parts. Since the saw 1 has flow holes 1a, fluid transport is maintained even during rotary cutting. After cutting and separating, pull up the saw 1, close the shutter plate 6, and open the drilling machine D.
Remove the plug and install a plug instead (not shown)
, open the shutter plate 6 again, and screw the plug 16 (see Fig. 9) into the port 15 of the pipe joint B to make the pipe joint B airtight and watertight. Remove all other parts except for.
前記管継手Ｂは分離された両導管P1，P1に対し
て電気的絶縁性をもつ。即ち、第３図ないし第７
図に示すように導管P1，P1との接触部に絶縁体１
７を介在させてある。又、押輪Ｃも同様に絶縁体
１８を有している。B1は継手本体上型、B2は継
手本体下型、７９はガスケツト、２０はリテー
ナ、２１はボールバンド、２２はガスケツト、２
３はボルト固定用ゴム輪である。又、C1は押輪
本体上型、C2は押輪本体下型、２４はそれらの
緊締用ボルト・ナツト、２５は内挿環、２６は管
継手Ｂと押輪Ｃとの連結用ボルトである。図面で
明らかなように管継手Ｂの外周面形状は非常に複
雑である。 The pipe joint B has electrical insulation properties with respect to both the separated conduits P 1 and P 1 . That is, Figures 3 to 7
As shown in the figure, there is an insulator 1 at the contact part with conduit P 1 and P 1 .
7 is interposed. Further, the push ring C similarly has an insulator 18. B 1 is the upper mold of the joint body, B 2 is the lower mold of the joint body, 79 is the gasket, 20 is the retainer, 21 is the ball band, 22 is the gasket, 2
3 is a rubber ring for bolt fixing. Further, C 1 is an upper mold of the push ring body, C 2 is a lower mold of the push ring body, 24 is a bolt/nut for tightening them, 25 is an inner ring, and 26 is a bolt for connecting the pipe joint B and the push ring C. As is clear from the drawings, the outer peripheral surface shape of the pipe joint B is very complicated.
第８図ないし第１２図は防食剤充填用カバーＡ
を示す。このカバーＡは管継手Ｂおよび一対の押
輪Ｃ，Ｃの全体を囲繞するものでそれら全体の外
周面形状に沿う又はほぼ沿う形状を有し、囲繞姿
勢において管継手Ｂおよび押輪Ｃ，Ｃ全体の外周
面との間に防食剤充填用空間Ｓを形成する。又、
このカバーＡは両端に導管P1，P1に外嵌する筒部
２７，２７を有している。カバーＡは、周方向一
箇所において導管軸芯方向に沿い全長に亘つて分
割され、その分割部には接合用フランジ２８，２
８が一体連設されているとともに、この分割部と
直径方向で対向する部分にもフランジ様の突条２
９，２９が延出され両突条２９，２９がカバーＡ
の揺動開閉支点３０を形成する状態に一連化され
ている。３１……はフランジ２８、突条２９に形
成された鳩目穴、３２……は防食剤注入孔および
空気抜き孔の加工位置を示すマーク、３３，３３
はカバー締付けバンド挿通孔である。カバーＡ
は、その全体がポリエチレン、ポリプロピレンな
どの合成樹脂材から成形され、かつ埋戻し土圧に
耐える機械的強度を有している。カバーＡの標準
厚みは約0.5mmで、その形状により強度増加が図
られている。 Figures 8 to 12 show cover A for filling with anticorrosion agent.
shows. This cover A surrounds the entire pipe fitting B and the pair of push rings C, C, and has a shape that follows or almost follows the outer peripheral surface shape of the entire pipe fitting B and the pair of push rings C, C. A space S for filling an anticorrosive agent is formed between the outer peripheral surface and the outer peripheral surface. or,
This cover A has cylindrical portions 27, 27 at both ends that fit onto the conduit pipes P1 , P1 . The cover A is divided along the entire length along the axial direction of the conduit at one point in the circumferential direction, and joining flanges 28, 2 are provided at the divided portion.
8 are integrally connected, and a flange-like protrusion 2 is also provided at a portion diametrically opposed to this divided portion.
9 and 29 are extended and both protrusions 29 and 29 are cover A.
They are connected in series to form a swinging opening/closing fulcrum 30. 31... are eyelet holes formed in the flange 28 and the protrusion 29, 32... are marks indicating the processing positions of the anticorrosive injection hole and the air vent hole, 33, 33
is the cover tightening band insertion hole. Cover A
The entire structure is molded from a synthetic resin material such as polyethylene or polypropylene, and has the mechanical strength to withstand backfilling earth pressure. The standard thickness of cover A is approximately 0.5 mm, and its shape increases its strength.
カバーＡは開き姿勢で管継手Ｂおよび押輪Ｃ，
Ｃに対しそれの側方から装着可能で、装着後閉じ
姿勢とし鳩目３４……およびバンド３５，３５で
固定しかつマーク３２…において穴加工する。カ
バーＡを閉じるときには、フランジ２８，２８
間、突条２９，２９間および筒部２７，２７と導
管P1，P1との間に夫々単泡性のスポンジ３６……
を介在して気密、水密化を図る。 With cover A in the open position, pipe fitting B and press ring C,
It can be attached to C from the side thereof, and after being attached, it is held in a closed position and fixed with eyelets 34... and bands 35, 35, and holes are drilled at marks 32... When closing cover A, the flanges 28, 28
A single-cell sponge 36 is provided between the ridges 29, 29 and between the cylinder portions 27, 27 and the conduits P1, P1, respectively.
Intermediate to achieve airtightness and watertightness.
前記マーク３２……において加工した孔を半分
は防食剤注入孔とし半分は空気抜き孔として前記
の空間Ｓ内に防食剤を注入充填する。防食剤とし
てはゴム質弾性を有するもの、例えば主剤と硬化
剤とを混練した液状のものであつて時間がたつに
つれて硬化して密封作用を呈するもの、即ちポソ
ウレタン系樹脂などが好ましい。 Half of the holes machined at the marks 32... are used as anticorrosion injection holes and the other half are used as air vent holes to inject and fill the space S with an anticorrosion agent. The anticorrosive agent is preferably one having rubbery elasticity, such as a liquid mixture of a main ingredient and a curing agent, which hardens over time and exhibits a sealing effect, such as a polyurethane resin.
次に応用例について説明すると、カバーＡは上
例では揺動開閉式であつたから作業性に大変すぐ
れているが、これに限らず、二つ割り式に構成し
てもよきものである。又、カバーＡを金属板から
構成してもよい。更に防食剤として速硬性があ
り、かつ強度大なるものを用いる場合は、それの
硬化後にカバーＡを取外し転用することも考えら
れる。但し一般的にはカバーＡは残置するもので
ある。押輪Ｃ，Ｃを用いないときは、カバーＡと
して管継手Ｂの形状のみに合わせたものを用い
る。カバーＡはノーブロー活管方式以外で使用し
てもよい。又、最初から別体の導管P1，P1を対象
とするもよい。更に３本、４本の導管P1……の管
継手Ｂに対応するカバーＡとして実施することも
よきものである。 Next, an application example will be described. In the above example, the cover A has a swinging opening/closing type, which has excellent workability, but the cover A is not limited to this, and may be constructed in a two-split type. Further, the cover A may be made of a metal plate. Furthermore, if a fast-curing and high-strength anticorrosive agent is used, it is conceivable to remove the cover A after the anticorrosion agent has hardened and reuse it. However, cover A is generally left in place. When push rings C and C are not used, a cover A that matches only the shape of the pipe joint B is used. Cover A may be used in other than the no-blow live tube system. Alternatively, separate conduits P 1 and P 1 may be targeted from the beginning. Furthermore, it is also good to implement it as a cover A corresponding to the pipe joint B of three or four conduits P 1 .
第１３図は、導管P1……群を各切込点Ｅ……に
おいて管継手ＢおよびカバーＡにて絶縁ブロツク
化した状態を示し、３７……はMg陽極である。 FIG. 13 shows a state in which the conduit P 1 ... group is made into an insulating block at each cutting point E with a pipe joint B and a cover A, and 37 ... is an Mg anode.
図面は本考案に係る防食剤充填用カバーの実施
の態様を例示し、第１図は穿孔機取付け状態を示
す一部切欠側面図、第２図はそれの部分の正面
図、第３図は管継手の取付け状態を示す一部切欠
正面図、第４図はそれの一部切欠平面図、第５図
はそれの一部切欠側面図、第６図はカバーの取付
け状態を示す一部切欠平面図、第７図はそれの一
部切欠正面図、第８図はそれの一部切欠底図、第
９図はそれの側面図、第１０図、第１１図はカバ
ーの縦断端面図で夫々第６図の−線、XI−XI
線の矢視に対応する。第１２図は導管の電気ブロ
ツク化の概略図である。
２８……接合用フランジ、３０……開閉支点、
Ｂ……管継手、Ｓ……充填用空間。
The drawings illustrate an embodiment of the anticorrosion agent filling cover according to the present invention, in which Fig. 1 is a partially cutaway side view showing a state in which a punching machine is installed, Fig. 2 is a front view of that part, and Fig. 3 is a partially cutaway side view showing the state in which a drilling machine is installed. Fig. 4 is a partially cutaway front view showing how the pipe joint is installed, Figure 4 is a partially cutaway plan view, Figure 5 is a partially cutaway side view, and Figure 6 is a partially cutaway view showing how the cover is installed. Fig. 7 is a partially cutaway front view of the cover, Fig. 8 is a partially cutaway bottom view of the cover, Fig. 9 is a side view of the cover, and Figs. 10 and 11 are vertical cross-sectional end views of the cover. − line and XI−XI in Fig. 6, respectively.
Corresponds to the arrow direction of the line. FIG. 12 is a schematic diagram of electrical blocking of conduits. 28...Joining flange, 30...Opening/closing fulcrum,
B...Pipe fitting, S...Space for filling.
Claims (1)
絶縁性管継手Ｂを囲繞させることにより、前記
管継手Ｂ外周面との間にその管継手Ｂ外周面の
全体又はほぼ全体を被覆する防食剤充填用空間
Ｓを形成するカバーであつて、前記管継手Ｂの
外周面形状に沿う又はほぼ沿う形状を有し、か
つ前記管継手Ｂに対し、それの側方から装着可
能な開き姿勢とそれを囲繞する閉じ姿勢とに切
換自在に構成してあることを特徴とする防食剤
充填用カバー。 周方向一箇所において導管軸芯方向に沿い全
長に亘つて分割され、その分割部には接合用フ
ランジ２８，２８が一体連設されているととも
に、分割部と直径方向で対向する部分は揺動開
閉支点３０を形成する状態に一連化されている
実用新案登録請求の範囲第項に記載の防食剤
充填用カバー。 全体がポリエチレン、ポリプロピレンなどの
合成樹脂材から成形されている実用新案登録請
求の範囲第項又は第項に記載の防食剤充填
用カバー。 埋戻し土圧に耐える機械的強度を有している
実用新案登録請求の範囲第項ないし第項の
何れかに記載の防食剤充填用カバー。 二液性反応硬化型防食剤を充填するものであ
る実用新案登録請求の範囲第項ないし第項
の何れかに記載の防食剤充填用カバー。 導管途中部分の切断分離を漏洩阻止状態で可
能とする管継手Ｂを囲繞する実用新案登録請求
の範囲第項ないし第項の何れかに記載の防
食剤充填用カバー。[Claims for Utility Model Registration] By surrounding an electrically insulating pipe fitting B for connecting separated conduits, the entire or almost the entire outer circumferential surface of the pipe fitting B is provided between the outer circumferential surface of the pipe fitting B and the outer circumferential surface of the pipe fitting B. A cover that forms a space S for filling an anticorrosive agent that covers the entire area, and has a shape that follows or almost follows the shape of the outer peripheral surface of the pipe fitting B, and is attached to the pipe fitting B from the side thereof. A cover for filling an anticorrosive agent, characterized in that it is configured to be switchable between a possible open position and a closed position that surrounds the cover. It is divided at one point in the circumferential direction along the entire length of the pipe along the axial direction of the pipe, and joining flanges 28, 28 are integrally connected to the divided part, and the part facing the divided part in the diametrical direction is swingable. The cover for filling an anticorrosive agent according to claim 1, which is connected in a series to form an opening/closing fulcrum 30. The cover for filling with an anticorrosive agent according to claim 1 or 2, which is entirely molded from a synthetic resin material such as polyethylene or polypropylene. A cover for filling with an anticorrosive agent according to any one of claims 1 to 3, which has mechanical strength to withstand backfill earth pressure. A cover for filling an anticorrosive agent according to any one of claims 1 to 3, which is filled with a two-component reaction-curing anticorrosive agent. A cover for filling an anticorrosive agent according to any one of claims 1 to 3, which surrounds a pipe joint B that enables cutting and separation of an intermediate portion of a conduit while preventing leakage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16647880U JPS6245867Y2 (en) | 1980-11-19 | 1980-11-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16647880U JPS6245867Y2 (en) | 1980-11-19 | 1980-11-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5788520U JPS5788520U (en) | 1982-06-01 |
| JPS6245867Y2 true JPS6245867Y2 (en) | 1987-12-09 |
Family
ID=29525128
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16647880U Expired JPS6245867Y2 (en) | 1980-11-19 | 1980-11-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6245867Y2 (en) |
-
1980
- 1980-11-19 JP JP16647880U patent/JPS6245867Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5788520U (en) | 1982-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4538837A (en) | Anti-corrosion pipe apparatus | |
| US5501472A (en) | Dual compression seal for conduits with compliance to both axial and angular movement | |
| US5826919A (en) | Flexible penetration fitting | |
| US5509699A (en) | Mechanical joint pipe adapter with inserted flexible spline | |
| US4049480A (en) | Method and apparatus for forming a joint in a confined space between two abutting ends of conduit liners | |
| US20020158466A1 (en) | Self restrained pressure gasket | |
| WO1995033948A9 (en) | Mechanical joint pipe adapter | |
| US4609210A (en) | Restrainer device for couplings in pipelines | |
| US5988698A (en) | Flexible penetration fitting | |
| CA2793590C (en) | A pipe connection to form a liquid tight seal and method of forming the same | |
| JPS6245867Y2 (en) | ||
| US3756631A (en) | Pipe gasket collar | |
| EP0565372B1 (en) | Pipe couplings | |
| US11662047B2 (en) | Pipe connection system and method for producing a pipe connection | |
| JPH0753014B2 (en) | Water stopping method and structure of pipes such as cables | |
| KR100372316B1 (en) | A waterproof underground pipeline joint of electric power | |
| CA1176282A (en) | Anti-corrosion pipe apparatus | |
| US2887446A (en) | Pipe coupling | |
| JP3113448U (en) | Liquidproof jig for buried pipe sump | |
| US1278128A (en) | Pipe connection. | |
| JPH058397Y2 (en) | ||
| JPS6246073Y2 (en) | ||
| JPH03223596A (en) | Leakage preventive device for tube | |
| CN217653514U (en) | Indoor gas pipeline anticorrosion structure that secretly buries | |
| JPS5818428Y2 (en) | Water stop valve |