JPH04101889U - pipe fittings - Google Patents
pipe fittingsInfo
- Publication number
- JPH04101889U JPH04101889U JP1158491U JP1158491U JPH04101889U JP H04101889 U JPH04101889 U JP H04101889U JP 1158491 U JP1158491 U JP 1158491U JP 1158491 U JP1158491 U JP 1158491U JP H04101889 U JPH04101889 U JP H04101889U
- Authority
- JP
- Japan
- Prior art keywords
- pipe
- joint
- flange
- joint pipe
- flexible main
- 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
- 229910000831 Steel Inorganic materials 0.000 claims description 26
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 239000010959 steel Substances 0.000 claims description 26
- 230000002093 peripheral effect Effects 0.000 claims description 17
- 238000005260 corrosion Methods 0.000 claims description 13
- 239000004744 fabric Substances 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 101150096674 C20L gene Proteins 0.000 description 1
- 102220543923 Protocadherin-10_F16L_mutation Human genes 0.000 description 1
- 101100445889 Vaccinia virus (strain Copenhagen) F16L gene Proteins 0.000 description 1
- 101100445891 Vaccinia virus (strain Western Reserve) VACWR055 gene Proteins 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Abstract
(57)【要約】
【目的】 管内圧が高圧になっても、充分これに耐えて
可撓性本管が継管から抜け出すのを確実に防止する。
【構成】 フランジ管継手において、第２継管31の内周
面に環状凹溝33を設け、この環状凹溝に円周方向少なく
とも１つ割りで径が拡縮可能となって内周面に係止突起
34が多数設けられたロックリング35を嵌合するととも
に、環状凹溝に第２継管31の外周から螺合されて達する
ロックリング押圧用のセットボルト36を第２継管の円周
方向に所定間隔で複数個設けている。
(57) [Summary] [Purpose] To sufficiently withstand even if the internal pressure of the pipe becomes high and reliably prevent the flexible main pipe from slipping out of the joint pipe. [Structure] In the flange pipe joint, an annular groove 33 is provided on the inner circumferential surface of the second joint pipe 31, and the diameter of this annular groove can be expanded or contracted in at least one section in the circumferential direction, so that the inner circumferential surface is Stop projection
At the same time, a set bolt 36 for pressing the lock ring that is screwed into the annular groove from the outer periphery of the second joint pipe 31 is inserted in the circumferential direction of the second joint pipe. A plurality of them are provided at predetermined intervals.
Description
【０００１】0001
この考案は、給水配管、汚水圧送配管、山岳配管等の可撓性を要求される配管 に用いられる管継手に関するものである。 This idea is suitable for piping that requires flexibility, such as water supply piping, sewage pressure transmission piping, and mountain piping. This relates to pipe fittings used in
【０００２】0002
図３は従来のこの種の管継手を示す。この管継手においては一方の管１と他方 の管２を接続するには、まずポリエチレン等からなる可撓性本管３の外周面に布 テープ４および鋼製補強テープ５が螺旋状に巻きつけられ、該補強テープの外周 面に螺旋状の波をもった波付鋼管６が嵌合され、さらに該波付鋼管の外周面に軟 質ポリエチレン等からなる防食層７が設けられて構成された一方の管１の端部の 内周面に所定長さの補強用薄手スリーブ８を嵌合するとともに、防食層７、波付 鋼管６、補強テープ５、布テープ４をスリーブ８より長くならない長さにわたり 除去して可撓性本管３の外周面を露出させる。またこの露出した可撓性本管３の 隣接部の防食層７を所定長さにわたり除去して波付鋼管６の外周面を露出させる 。そして前記露出した可撓性本管３の外周面に両端に外向きの環状フランジ10， 11を有する第１継管12と、一端に外向きの環状フランジ13を有し、円周方向に２ つ割り構造の第２継管14とを、第１継管12の一端側フランジ10が管端に位置し、 かつ第２継管14のフランジ13が第１継管12の他端側フランジ11に当接するように 隣接嵌合する。また前記露出した波付鋼管６の外周面に、外向きの環状フランジ 16を中間部に有し、内周面に波付鋼管６の波と螺合する波を有する第３継管17を 、その一端面を第２継管14の他端面に一致させて螺合により嵌合する。18は補強 テープ係止材で、のり付フィラメントテープを補強テープ５の端部表面に巻き付 けて補強テープ５が緩まないように押さえている。 FIG. 3 shows a conventional pipe joint of this type. In this pipe joint, one pipe 1 and the other To connect the pipes 2, first put a piece of cloth on the outer circumferential surface of the flexible main pipe 3 made of polyethylene or the like. A tape 4 and a steel reinforcing tape 5 are wound spirally around the outer periphery of the reinforcing tape. A corrugated steel pipe 6 having a spiral wave on its surface is fitted, and a soft material is added to the outer peripheral surface of the corrugated steel pipe. The end of one pipe 1 is provided with a corrosion protection layer 7 made of high quality polyethylene, etc. A thin reinforcing sleeve 8 of a predetermined length is fitted to the inner circumferential surface, and a corrosion protection layer 7 and a corrugated Steel pipe 6, reinforcing tape 5, and cloth tape 4 over a length not longer than sleeve 8. It is removed to expose the outer peripheral surface of the flexible main pipe 3. Also, this exposed flexible main pipe 3 A predetermined length of the corrosion protection layer 7 in the adjacent portion is removed to expose the outer peripheral surface of the corrugated steel pipe 6. . And an annular flange 10 facing outward at both ends on the outer peripheral surface of the exposed flexible main pipe 3, 11 and an outwardly directed annular flange 13 at one end, with a circumferentially extending 2 A second joint pipe 14 having a split structure is arranged such that one end side flange 10 of the first joint pipe 12 is located at the pipe end, and so that the flange 13 of the second joint pipe 14 comes into contact with the flange 11 on the other end side of the first joint pipe 12. Adjacent mating. Further, an outward annular flange is provided on the outer peripheral surface of the exposed corrugated steel pipe 6. 16 in the middle part, and a third joint pipe 17 having corrugations on the inner circumferential surface that screw together with the corrugations of the corrugated steel pipe 6. , one end surface thereof is aligned with the other end surface of the second joint pipe 14, and the second joint pipe 14 is fitted by screwing. 18 is reinforced Wrap the adhesive filament tape around the end surface of the reinforcing tape 5 using the tape locking material. The reinforcing tape 5 is held down so that it does not loosen.
【０００３】 次に、第３継管17のフランジ16と第１，２継管12，14のフランジ11，13をボル トナット21によって緊締固定するとともに、第１継管12の他端側フランジ11と第 ２継管14のフランジ13を両フランジ11，13間にシール部材23を介装してボルトナ ット24によって緊締固定し、さらに第１継管12の一端側フランジ10を他方の管２ の端部に設けたフランジ25に突合せ、この両フランジ10，25間にシール部材26を 介装してボルトナット27によって緊締固定していた。28は第２継管14の内周面に 多数設けられた係止突起で、２つ割り構造の第２継管14を嵌め合わせ、該管の水 平フランジ部19に取付けたボルトナット20を締め付けることによって可撓性本管 ３の外周面に喰い込んで係止するようになっている。0003 Next, bolt the flange 16 of the third joint pipe 17 and the flanges 11, 13 of the first and second joint pipes 12, 14. At the same time, the other end side flange 11 of the first joint pipe 12 and the first The flange 13 of the second joint pipe 14 is inserted with a seal member 23 between the flanges 11 and 13, and the bolt nut is inserted. The flange 10 on one end of the first joint pipe 12 is tightened and fixed with Butt against the flange 25 provided at the end of the It was interposed and tightened and fixed with bolts and nuts 27. 28 is on the inner peripheral surface of the second joint 14 A large number of locking protrusions are used to fit the second joint pipe 14, which has a two-part structure, to prevent water in the pipe. The flexible main pipe is tightened by tightening the bolts and nuts 20 attached to the flat flange part 19. It bites into the outer peripheral surface of 3 and locks.
【０００４】0004
ところで、従来の管継手は、前記のように可撓性本管３の外周面に喰い込んで 係止する第２継管14の係止突起28の喰い込み摩擦力と、第３継管17の波付鋼管６ との螺合面の摩擦力によって、可撓性本管３の管軸方向の抜け出しを防止するよ うになっているが、第２継管14が２つ割り構造となっているため、ボルトナット 20によって可撓性本管３を円周方向に均等に締め付けにくい。したがって可撓性 本管３がいびつに変形して、係止突起28の可撓性本管３に対する喰い込みが不完 全になり、例えば管内圧が高圧になると、管端に作用する流体圧が大きくなり、 継管12，14，17の摩擦力が抗しきれなくなって、該継管から可撓性本管３が抜け 出してしまい、配管が破壊してしまう恐れがあった。 By the way, as mentioned above, conventional pipe joints do not cut into the outer circumferential surface of the flexible main pipe 3. The biting friction force of the locking protrusion 28 of the second joint pipe 14 to be locked and the corrugated steel pipe 6 of the third joint pipe 17 The frictional force of the threaded surface prevents the flexible main pipe 3 from coming off in the pipe axial direction. However, since the second joint pipe 14 has a two-part structure, the bolts and nuts 20 makes it difficult to tighten the flexible main pipe 3 evenly in the circumferential direction. therefore flexible The main pipe 3 is distorted and the locking protrusion 28 is not fully inserted into the flexible main pipe 3. For example, when the internal pressure of the pipe becomes high, the fluid pressure acting on the pipe end increases, The frictional force of the joints 12, 14, and 17 can no longer be resisted, and the flexible main pipe 3 is pulled out from the joints. There was a risk that the pipes would be destroyed.
【０００５】 この考案は、前記のような従来の管継手のもつ問題点を排除し、管内圧が高圧 になっても、充分にこれに耐え、可撓性本管が継管から抜け出すのを確実に防止 することができる管継手を提供することを目的とする。[0005] This idea eliminates the problems of conventional pipe fittings as mentioned above, and eliminates the problem of high pressure inside the pipe. Even if the main pipe is exposed to water, it can fully withstand this and reliably prevent the flexible main pipe from slipping out of the joint pipe. The purpose is to provide pipe fittings that can
【０００６】[0006]
前記目的を達成するため、この考案は、前記のような管継手において、露出し た可撓性本管の隣接部の防食層、波付鋼管が前記スリーブより長くならない長さ にわたり除去されているとともに、さらにこれの隣接部の防食層が前記スリーブ より長くならない長さにわたり除去されている。また第２継管の他端側が前記防 食層、波付鋼管の除去により露出した補強テープの端部を覆うようになっている とともに、他端に外向きの環状フランジが設けられている。第２継管の内周面に 環状凹溝を設けている。この環状凹溝に円周方向少なくとも１つ割りで径が拡縮 可能となって内周面に係止突起が多数設けられたロックリングを嵌合するととも に、環状凹溝に第２継管の外周から螺合されて達するロックリング押圧用のセッ トボルトを第２継管の円周方向に所定間隔で複数個設けている。前記防食層の除 去により露出した波形鋼管の外周面に外向きのフランジを有する第３継管を螺合 により嵌合し、この第３継管のフランジと第２継管の他端側のフランジを第３締 結部材によって緊締固定している。 前記の管継手においては、さらに第３継管と第２継管との間に所定の隙間を設 け、この隙間にある補強テープの外周面に円周方向複数個に分割可能な補強テー プ押え用リングを嵌合し、この押え用リングを第３継管と第２継管で挾持するよ うにしてもよい。 In order to achieve the above object, this invention provides an exposed pipe joint as described above. Corrosion protection layer adjacent to the flexible main pipe, the length of the corrugated steel pipe is not longer than the sleeve. In addition, the anticorrosion layer adjacent to this is removed from the sleeve. removed over a length that is no longer than Also, the other end side of the second joint is Covers the edges of the reinforcing tape exposed due to the removal of the corrugated steel pipe. Also, an outward annular flange is provided at the other end. On the inner peripheral surface of the second joint An annular groove is provided. The diameter of this annular groove increases or decreases in at least one section in the circumferential direction. When a lock ring with many locking protrusions on the inner circumferential surface is fitted, A lock ring pressing set is screwed into the annular groove from the outer periphery of the second joint pipe. A plurality of bolts are provided at predetermined intervals in the circumferential direction of the second joint pipe. Removal of the anti-corrosion layer Screw the third joint pipe with an outward flange onto the outer peripheral surface of the corrugated steel pipe exposed by removing the pipe. the flange of this third joint pipe and the flange on the other end of the second joint pipe with the third fastener. It is tightened and fixed by a connecting member. In the pipe joint described above, a predetermined gap is further provided between the third joint pipe and the second joint pipe. A reinforcing tape that can be divided into multiple pieces in the circumferential direction is placed on the outer circumferential surface of the reinforcing tape in this gap. Fit the presser ring, and sandwich this presser ring between the third joint pipe and the second joint pipe. You may do so.
【０００７】[0007]
前記構成により、ロックリングを第２継管の外周からセットボルトで螺合して 多数の係止突起を可撓性本管の外周面に喰い込ませることが可能となる。したが って係止突起の喰い込みが完全になり、管内圧が高圧になっても充分にこれに抗 することができるようになる。 補強テープ押え用リングを設けた場合は、該押え用リングによって波付鋼管に よる押え以上に可撓性本管上の補強テープを押えることが可能となるため、管内 圧が高圧になって可撓性本管が膨らむようなことが生じても、補強テープや布テ ープが緩むことがなくなる。 With the above configuration, the lock ring is screwed from the outer periphery of the second pipe with the set bolt. It becomes possible to bite a large number of locking protrusions into the outer circumferential surface of the flexible main pipe. However, The locking protrusion is completely bitten, and even if the pipe internal pressure becomes high, it can sufficiently resist it. You will be able to do this. If a reinforcing tape holding ring is provided, the holding ring will hold the corrugated steel pipe. It is possible to press down the reinforcing tape on the flexible main pipe more than the presser foot, so the inside of the pipe can be Even if the flexible main pipe swells due to high pressure, reinforcing tape or cloth The loop will no longer come loose.
【０００８】[0008]
図１は従来例を示す図３と対応するこの考案の一実施例の上半部破断の正面図 、図２は図１の線Ａ−Ａに沿う断面図である。図１および図２において多くの部 分は従来例とほぼ同様になっているので、同様の部分には同一符号を付し、説明 を省略することとする。 FIG. 1 is a front view of the upper half of an embodiment of this invention, with the upper half cut away, corresponding to FIG. 3 showing a conventional example. , FIG. 2 is a cross-sectional view taken along line A-A in FIG. Many parts in Figures 1 and 2 The parts are almost the same as the conventional example, so similar parts are given the same reference numerals and explained. shall be omitted.
【０００９】 この実施例の第２継管31の他端側は防食層７、波付鋼管６の除去により露出し た補強テープ５の端部を覆うようになっており、該他端には外向きの環状フラン ジ32が設けられている。第２継管31はこの実施例では一体ものとしたが、円周方 向に少なくとも２つ割りとなった構造としてもよい。また第２継管31の内周面に は環状凹溝33が設けられ、この環状凹溝33には円周方向に複数個（この例では４ つ）割りで径が拡縮可能となって内周面に係止突起34が多数設けられたロックリ ング35が嵌合されている。ロックリング35は第２継管31の円周方向に所定間隔で 複数個設けられ、環状凹溝33に第２継管31の外周から螺合されて達するロックリ ング押圧用のセットボルト36によって締め付け固定されるようになっている。こ の実施例では第２継管31の一端側フランジ37にめねじ38が形成され、該めねじに ボルト40が螺合されて第１継管12のフランジ11と緊締固定されている。防食層７ の除去により露出した波付鋼管６の外周面には外向きの係合部42を有する第３継 管43が螺合により嵌合され、該第３継管の係合部42と第２継管31のフランジ32と の間の補強テープ５の外周面には円周方向複数個に分割可能な補強テープ押え用 リング45が嵌合されている。46はリング45形成のためのボルトである。第３継管 43の外周面には環状板47が係合部42と係合して嵌まっており、該環状板と第２継 管31のフランジ32が押え用リング45を挾持するようにボルトナット48によって緊 締固定されている。49は波付鋼管43の端部の空所を埋めるエポキシ樹脂等からな るシール材である。[0009] The other end side of the second joint pipe 31 in this embodiment is exposed by removing the anti-corrosion layer 7 and the corrugated steel pipe 6. The reinforcing tape 5 has an outer annular flange at the other end. 32 is provided. Although the second joint pipe 31 is integral in this embodiment, It is also possible to have a structure in which it is divided into at least two parts in the direction. Also, on the inner peripheral surface of the second joint 31 is provided with an annular groove 33, and this annular groove 33 has a plurality of grooves (four in this example) in the circumferential direction. (2) A locking ring whose diameter can be expanded or contracted by splitting and has many locking protrusions 34 on the inner circumferential surface. ring 35 is fitted. The lock rings 35 are arranged at predetermined intervals in the circumferential direction of the second joint 31. A plurality of locking rings are provided and are screwed into the annular groove 33 from the outer periphery of the second joint 31 to reach the locking ring. It is tightened and fixed by a set bolt 36 for pressing the ring. child In the embodiment, a female thread 38 is formed on the flange 37 at one end of the second joint 31, and Bolts 40 are screwed together and tightly secured to the flange 11 of the first joint 12. Corrosion protection layer 7 A third joint having an outward engaging portion 42 is formed on the outer peripheral surface of the corrugated steel pipe 6 exposed by the removal of the corrugated steel pipe 6. The pipe 43 is fitted by screwing, and the engaging portion 42 of the third joint pipe and the flange 32 of the second joint pipe 31 On the outer circumferential surface of the reinforcing tape 5 between Ring 45 is fitted. 46 is a bolt for forming ring 45. 3rd joint pipe An annular plate 47 is fitted onto the outer circumferential surface of 43 and engages with the engaging portion 42, and the annular plate and the second joint are connected to each other. The flange 32 of the pipe 31 is tightened with bolts and nuts 48 so as to clamp the retaining ring 45. It is tightened and fixed. 49 is made of epoxy resin etc. to fill the void at the end of the corrugated steel pipe 43. It is a sealing material.
【００１０】 前記のような実施例の管継手においては、内周面に係止突起34が多数設けられ たロックリング35を第２継管31の外周からセットボルト36で螺合して可撓性本管 ３の外周面に円周方向に均等に締め付け、係止突起34を可撓性本管３の外周面に 喰い込ませて係止し、固定することが可能となるため、可撓性本管３は従来のよ うにいびつになることなく、係止突起34の喰い込みが完全になり、管内圧が高圧 になってもこれに充分に抗することができるようになる。また、補強テープ押え 用リング45によって波付鋼管６による押え以上に可撓性本管３上の補強テープ５ を押えることが可能となるため、管内圧が高圧になって可撓性本管３が膨らむよ うなことがあっても、補強テープ５や布テープ４が緩むということがなくなる。0010 In the pipe joint of the embodiment described above, a large number of locking protrusions 34 are provided on the inner peripheral surface. Screw together the lock ring 35 from the outer periphery of the second joint pipe 31 with the set bolt 36 to secure the flexible main pipe. Tighten the locking protrusions 34 evenly in the circumferential direction on the outer circumferential surface of the flexible main pipe 3. The flexible main pipe 3 can be locked and fixed by biting into it, so the flexible main pipe 3 is The locking protrusion 34 is completely bitten in without becoming distorted, and the internal pressure of the pipe becomes high. Even if it becomes so, you will be able to fully resist this. In addition, the reinforcing tape presser The reinforcing tape 5 on the flexible main pipe 3 is held by the corrugated steel pipe 6 by the ring 45. As it becomes possible to hold down the main pipe 3, the pressure inside the pipe becomes high and the flexible main pipe 3 expands. Even if something like this happens, the reinforcing tape 5 and cloth tape 4 will not loosen.
【００１１】 前記した実施例は好ましい一例を示したにすぎず、細部にわたる設計等はこの 考案の要旨を変えない範囲で、実施に際し適宜変更したり、修正したりすること が可能である。[0011] The above-mentioned embodiment merely shows a preferable example, and detailed design etc. are based on this example. Changes or modifications may be made as appropriate during implementation without changing the gist of the idea. is possible.
【００１２】0012
請求項１の考案は前記のような構成からなり、ロックリングを第２継管の外周 からセットボルトで螺合して可撓性本管の外周面に円周方向に均等に締め付け、 その内周面に多数設けた係止突起を可撓性本管の外周面に完全に喰い込ませて係 止し、固定することによって、可撓性本管をその管端に作用する高圧の管内圧に も充分に抗することができるように第２継管と結合でき、したがって管内圧が高 圧になっても、可撓性本管が継管から抜け出すのを確実に防止することができ、 配管が破壊するようなことがない。また、従来のものは前記のように可撓性本管 の抜け出しにより配管が破壊するので、遠距離配管の場合には配管内が高圧とな らないよう送水ポンプを各所に設置しなければならなかったが、この考案の場合 には耐圧性が向上するので、設置するポンプの数を減らすことが可能となる。 請求項２の考案はさらに前記の効果に加えて、補強テープ押え用リングによっ て波付鋼管による押え以上に可撓性本管上の補強テープを押えることが可能とな るので、管内圧が高圧になって可撓性本管が膨らむようなことが生じても、第２ 継管の他端側によって覆われた補強テープや布テープの緩みや浮き上がりを防止 することができ、補強テープや布テープの緩み等によって補強力が低下し、可撓 性本管が膨らんで破損するようなことを効果的に防止することができる。 The invention according to claim 1 has the above-mentioned configuration, and the lock ring is attached to the outer periphery of the second pipe. Screw together with set bolts and tighten evenly in the circumferential direction on the outer circumferential surface of the flexible main pipe. The locking protrusions provided on the inner circumferential surface are completely inserted into the outer circumferential surface of the flexible main pipe. By stopping and fixing, the flexible main is exposed to the high internal pressure acting on its end. It can be connected to the second pipe so that it can sufficiently resist Even if pressure is high, the flexible main pipe can be reliably prevented from slipping out of the joint pipe. No damage to the piping. In addition, the conventional one has a flexible main as mentioned above. The piping will be destroyed if it escapes, so in the case of long-distance piping, there will be high pressure inside the piping. Water pumps had to be installed in various places to prevent Since the pressure resistance is improved, it is possible to reduce the number of pumps installed. In addition to the above-mentioned effects, the invention of claim 2 further provides a reinforcing tape pressing ring. This makes it possible to hold down the reinforcing tape on the flexible main pipe better than with a corrugated steel pipe. Therefore, even if the internal pressure of the pipe becomes high and the flexible main pipe swells, the secondary Prevents reinforcing tape or cloth tape covered by the other end of the pipe from loosening or lifting. However, the reinforcing force decreases due to loosening of the reinforcing tape or cloth tape, and it becomes flexible. It is possible to effectively prevent the sexual main body from swelling and being damaged.
【図１】この考案の一実施例の上半部破断の正面図であ
る。FIG. 1 is a front view of the upper half of an embodiment of the invention, with the upper half cut away.
【図２】図１の線Ａ−Ａに沿う断面図である。FIG. 2 is a sectional view taken along line A-A in FIG. 1;
【図３】従来例の上半部破断の正面図である。FIG. 3 is a front view of the upper half of the conventional example.
１ 一方の管 ２ 他方の管 ３ 可撓性本管 ４ 布テープ ５ 鋼製補強テープ ６ 波付鋼管 ７ 防食層 ８ 薄手スリーブ 12 第１継管 31 第２継管 33 環状凹溝 34 係止突起 35 ロックリング 36 セットボルト 43 第３継管 45 押え用リング 1 One tube 2 The other tube 3 Flexible main pipe 4 Cloth tape 5 Steel reinforcement tape 6 Corrugated steel pipe 7 Anti-corrosion layer 8 Thin sleeve 12 1st joint 31 2nd joint pipe 33 Annular groove 34 Locking protrusion 35 lock ring 36 set bolt 43 Third joint pipe 45 Presser ring
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｆ１６Ｌ 23/028 ──────────────────────────────────────────────── ─── Continued from front page (51) Int.Cl. 5 Identification code Internal reference number FI Technical display location F16L 23/028
Claims (2)
強テープ、波付鋼管、防食層が順次設けられて構成され
た一方の管の端部の内周面に所定長さの補強用薄手スリ
ーブを嵌合するとともに、前記防食層、波付鋼管、補強
テープ、布テープを管端から前記スリーブより長くなら
ない長さにわたり除去して可撓性本管の外周面を露出さ
せ、この露出した可撓性本管の外周面に両端に外向きの
環状フランジを有する第１継管と、少なくとも一端に外
向きの環状フランジを有する第２継管とを、第１継管の
一端側フランジが管端に位置し、かつ第２継管のフラン
ジが第１継管の他端側フランジに当接するように隣接嵌
合し、この当接する第１継管の他端側フランジと第２継
管のフランジを両フランジ間にシール部材を介装して第
１締結部材によって緊締固定し、第１継管の一端側フラ
ンジを他方の管の端部に設けたフランジに突合せ、この
両フランジ間にシール部材を介装して第２締結部材によ
って緊締固定した管継手において、前記露出した可撓性
本管の隣接部の防食層、波付鋼管が前記スリーブより長
くならない長さにわたり除去されているとともに、さら
にこれの隣接部の防食層が前記スリーブより長くならな
い長さにわたり除去されており、また第２継管の他端側
が前記防食層、波付鋼管の除去により露出した補強テー
プの端部を覆うようになっているとともに、他端に外向
きの環状フランジが設けられており、第２継管の内周面
に環状凹溝を設け、この環状凹溝に円周方向少なくとも
１つ割りで径が拡縮可能となって内周面に係止突起が多
数設けられたロックリングを嵌合するとともに、環状凹
溝に第２継管の外周から螺合されて達するロックリング
押圧用のセットボルトを第２継管の円周方向に所定間隔
で複数個設け、前記防食層の除去により露出した波形鋼
管の外周面に外向きのフランジを有する第３継管を螺合
により嵌合し、この第３継管のフランジと第２継管の他
端側のフランジを第３締結部材によって緊締固定したこ
とを特徴とする管継手。Claim 1: A cloth tape, a steel reinforcing tape, a corrugated steel pipe, and an anticorrosive layer are sequentially provided on the outer circumferential surface of a flexible main pipe, and a predetermined length is provided on the inner circumferential surface of the end of one of the tubes. At the same time, the anti-corrosion layer, the corrugated steel pipe, the reinforcing tape, and the cloth tape are removed from the pipe end over a length not longer than the sleeve to expose the outer peripheral surface of the flexible main pipe. , a first joint pipe having outward annular flanges at both ends on the outer peripheral surface of the exposed flexible main pipe, and a second joint pipe having an outward annular flange at at least one end of the first joint pipe. The flange on the one end side is located at the pipe end, and the flange of the second joint pipe is fitted adjacently to the flange on the other end side of the first joint pipe, and the flange on the other end side of the first joint pipe is in contact with the flange on the other end side of the first joint pipe. The flange of the second joint pipe is tightened and fixed by the first fastening member with a seal member interposed between both flanges, and the flange on one end of the first joint pipe is butted against the flange provided at the end of the other pipe. In a pipe joint in which a sealing member is interposed between both flanges and the second fastening member is used to tighten and fix the pipe joint, the corrosion protection layer in the adjacent portion of the exposed flexible main pipe extends over a length of the corrugated steel pipe that is not longer than the sleeve. In addition, the corrosion protection layer adjacent to this has been removed over a length that is not longer than the sleeve, and the reinforcement layer on the other end of the second joint is exposed due to the removal of the corrosion protection layer and the corrugated steel pipe. In addition to covering the end of the tape, an annular flange facing outward is provided at the other end, and an annular groove is provided on the inner circumferential surface of the second joint pipe, and a circumferential groove is provided in the annular groove. A lock ring whose diameter can be expanded or contracted in at least one piece and has a large number of locking protrusions on its inner peripheral surface is fitted, and a lock ring that is reached by being screwed into the annular groove from the outer periphery of the second joint pipe. A plurality of set bolts for pressing are provided at predetermined intervals in the circumferential direction of the second joint pipe, and a third joint pipe having an outward flange is screwed onto the outer peripheral surface of the corrugated steel pipe exposed by the removal of the anti-corrosion layer. A pipe joint characterized in that the flange of the third joint pipe and the flange on the other end side of the second joint pipe are fitted together and tightened and fixed by a third fastening member.
を設け、この隙間にある補強テープの外周面に円周方向
複数個に分割可能な補強テープ押え用リングを嵌合し、
この押え用リングを第３継管と第２継管で挾持するよう
にした請求項１記載の管継手。Claim 2: A predetermined gap is provided between the third joint pipe and the second joint pipe, and a reinforcing tape holding ring that can be divided into a plurality of pieces in the circumferential direction is fitted to the outer peripheral surface of the reinforcing tape in this gap. together,
2. The pipe joint according to claim 1, wherein the holding ring is held between the third joint pipe and the second joint pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1158491U JPH071577Y2 (en) | 1991-02-08 | 1991-02-08 | Pipe fitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1158491U JPH071577Y2 (en) | 1991-02-08 | 1991-02-08 | Pipe fitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04101889U true JPH04101889U (en) | 1992-09-02 |
| JPH071577Y2 JPH071577Y2 (en) | 1995-01-18 |
Family
ID=31745126
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1158491U Expired - Lifetime JPH071577Y2 (en) | 1991-02-08 | 1991-02-08 | Pipe fitting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH071577Y2 (en) |
-
1991
- 1991-02-08 JP JP1158491U patent/JPH071577Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH071577Y2 (en) | 1995-01-18 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19950718 |