JPH0538312Y2 - - Google Patents
Info
- Publication number
- JPH0538312Y2 JPH0538312Y2 JP9163089U JP9163089U JPH0538312Y2 JP H0538312 Y2 JPH0538312 Y2 JP H0538312Y2 JP 9163089 U JP9163089 U JP 9163089U JP 9163089 U JP9163089 U JP 9163089U JP H0538312 Y2 JPH0538312 Y2 JP H0538312Y2
- Authority
- JP
- Japan
- Prior art keywords
- holder
- packing
- pipe
- center hole
- tube end
- 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 - Lifetime
Links
- 238000012856 packing Methods 0.000 claims description 42
- 238000004891 communication Methods 0.000 claims description 11
- 230000007797 corrosion Effects 0.000 claims description 7
- 238000005260 corrosion Methods 0.000 claims description 7
- 239000012530 fluid Substances 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229920003002 synthetic resin Polymers 0.000 description 4
- 239000000057 synthetic resin Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000005536 corrosion prevention Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 210000000078 claw Anatomy 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
Landscapes
- Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
Description
【考案の詳細な説明】
［産業上の利用分］
この考案は各種の管継手によつて接続された配
管接続部において、管端の腐蝕や発錆を防止する
ための管端防蝕機構に関する。[Detailed Description of the Invention] [Industrial Application] This invention relates to a pipe end corrosion prevention mechanism for preventing corrosion and rusting of the pipe ends in pipe connections connected by various types of pipe joints.
［従来の技術］
従来の技術としては例えば実開昭61−128488号
公報や、実開昭62−52385号公報がある。[Prior Art] Examples of conventional techniques include, for example, Japanese Utility Model Application Publication No. 128488/1988 and Japanese Unexamined Utility Model Publication No. 52385/1988.
［考案が解決しようとする課題］
本考案は管継手への着脱や取扱いが簡単で防蝕
効果を高めることができる管端防蝕機構を提供す
ることを課題とするものである。[Problems to be Solved by the Invention] An object of the present invention is to provide a tube end corrosion protection mechanism that is easy to attach and detach from a pipe joint and to handle, and that can enhance the corrosion protection effect.
［課題を解決するための手段］
本考案の管端防蝕機構は管端が接続される管継
手のセンタ孔内に装入されたほぼ円筒状のホルダ
には前記センタ孔の周面に突設した抜け止め部に
当接させるための突条を突設するとともに、前記
ホルダには中空リング状で断面方向への弾性曲げ
変形可能に形成されかつ底部に流通口が開設され
たパツキンを、このパツキンが前記管端の螺進に
よつてこの管端と前記突条との間で圧縮変形する
ように嵌装し、さらに、前記ホルダにはこのホル
ダの内部と前記流通口とを連通するために適数個
の連通孔を貫設した構成を有する。[Means for Solving the Problems] The pipe end corrosion protection mechanism of the present invention includes a substantially cylindrical holder inserted into the center hole of a pipe joint to which the pipe end is connected, which is provided with a protrusion on the circumferential surface of the center hole. The holder is provided with a protrusion that protrudes to abut against the retaining part, and the holder is provided with a packing having a hollow ring shape that can be elastically bent and deformed in the cross-sectional direction, and has a flow port at the bottom. A gasket is fitted in the holder so as to be compressively deformed between the tube end and the protrusion due to the screwing of the tube end, and the gasket is fitted in the holder to communicate the inside of the holder with the communication port. It has a configuration in which an appropriate number of communication holes are provided through the.
［作用］
中空リング状で断面方向への弾性曲げ変形可能
に形成されたパツキンを、ほぼ円筒状のホルダに
対し前記パツキンが前記ホルダに突設した突条
と、管継手のセンタ孔に螺嵌される管端との間に
介座されるように嵌装した状態で、このホルダを
前記センタ孔内に対し前記突条が前記センタ孔の
周面に突設した抜け止め部に当接する位置まで装
入して前記パツキンおよび前記ホルダを前記セン
タ孔内にセツトする。この状態で前記管端を螺進
させ、前記パツキンを前記突条と前記管端との間
で挟圧して圧縮変形させるとともに、前記ホルダ
に貫設した適数個の連通口を通じて前記ホルダの
内部から前記パツキングの内部へ流入した流体に
よつて前記パツキンを膨張させて管端の管端面と
前記センタ孔の周面とに圧接させ、管端面付近を
前記パツキンによつて密封状にシールする。[Function] A hollow ring-shaped packing that can be elastically bent in the cross-sectional direction is screwed into a substantially cylindrical holder into a protrusion protruding from the holder and into the center hole of the pipe joint. The holder is inserted into the center hole so as to be interposed between the end of the pipe and the pipe end, and the holder is placed in the center hole at a position where the protrusion comes into contact with a retaining portion protruding from the circumferential surface of the center hole. The packing and the holder are set in the center hole. In this state, the tube end is screwed forward, the packing is compressed and deformed by being compressed between the protrusion and the tube end, and the inside of the holder is passed through an appropriate number of communication holes provided through the holder. The packing is expanded by the fluid flowing into the packing from the tube end, and brought into pressure contact with the tube end surface of the tube end and the circumferential surface of the center hole, so that the vicinity of the tube end surface is hermetically sealed by the packing.
［考案の効果］
本考案は上記したように構成してあるので、ホ
ルダをこのホルダにパツキンを嵌装した状態で管
継手のセンタ孔内に対しワンタツチで容易にセツ
トすることができ、パツキンおよびホルダの管継
手への取付け操作および管継手からの取外し操作
を簡易化することができる。[Effects of the invention] Since the present invention is constructed as described above, the holder can be easily set into the center hole of the pipe joint with a single touch, with the packing fitted into the holder, and the packing and The operation of attaching the holder to the pipe joint and the operation of removing it from the pipe joint can be simplified.
また、管端を管継手のセンタ孔内に嵌込んで流
体を管端内を流通させた状態では、圧縮変形した
パツキンがその内部に流入した流体の流体圧によ
つて膨張して管端面やセンタ孔の周面に対し強固
に圧接するので、管端面に対するシール効果およ
び防蝕効果を高めることができる。 In addition, when the pipe end is fitted into the center hole of the pipe joint and fluid is flowing through the pipe end, the compressively deformed packing expands due to the fluid pressure of the fluid flowing into the pipe end surface. Since it is firmly pressed against the circumferential surface of the center hole, it is possible to enhance the sealing effect and corrosion prevention effect on the tube end surface.
［実施例］
次に、フランジ形の管継手と、合成樹脂ライニ
ング層が内周面に被覆された鋼管の管端との接続
部に適用された本考案の一実施例を第１図〜第３
図にしたがつて説明する。[Example] Next, an example of the present invention applied to a connection between a flange-type pipe joint and the end of a steel pipe whose inner peripheral surface is coated with a synthetic resin lining layer is shown in Figs. 3
This will be explained according to the diagram.
鋼管１の管端２が接続される管継手４の中心部
に貫設されて管端２が嵌込まれるセンタ孔５内に
は管端２の管端面３およびセンタ孔５の周面に密
接して管端面３付近をシールするためにゴム材若
しくは軟質合成樹脂材によつて中空リング状で断
面ホルダへの弾性曲げ変形可能に形成されかつリ
ング状の摺接リング８が添着されたパツキン６
と、このパツキン６をセンタ孔５内に保持するた
めに硬質合成樹脂材でほぼ円筒状に形成されたホ
ルダ７とが管端面３を流体から防護するために装
入されている。 The pipe end 2 of the steel pipe 1 is inserted through the center of the pipe joint 4 to which the pipe end 2 is connected, and the center hole 5 into which the pipe end 2 is fitted has a hole that closely contacts the pipe end surface 3 of the pipe end 2 and the circumferential surface of the center hole 5. In order to seal the vicinity of the tube end face 3, a seal 6 is formed of a rubber material or a soft synthetic resin material in the shape of a hollow ring so that it can be elastically bent and deformed to the cross-sectional holder, and to which a ring-shaped sliding ring 8 is attached.
In order to hold the packing 6 in the center hole 5, a holder 7 formed of a hard synthetic resin material and having a substantially cylindrical shape is inserted to protect the tube end surface 3 from fluid.
管継手３のセンタ孔５の周面には管端２の外ね
じ２ａが螺嵌される内ねじ５ａがセンタ孔の中央
部付近から一端部にわたつて形成されるととも
に、センタ孔５の周面の他端部にはホルダ７が当
接してホルダ７の装入端を規定する抜け止め部１
０が環状に突設され、この抜け止め部１０の先端
面には断面がほぼＶ形状の掛合部１１が全周にわ
たつて凹設されている。 An internal thread 5a into which the external thread 2a of the tube end 2 is screwed is formed on the peripheral surface of the center hole 5 of the pipe joint 3, extending from near the center of the center hole to one end. At the other end of the surface, there is a retaining part 1 that the holder 7 comes into contact with and defines the insertion end of the holder 7.
0 protrudes in an annular shape, and a hooking portion 11 having a substantially V-shaped cross section is recessed over the entire circumference at the distal end surface of this retaining portion 10.
パツキン６は左右の側壁部６ｂ，６ｃと、この
両側壁部６ｂ，６ｃの基端に連接されて屈伸可能
に形成された屈伸部６ｄと、両側壁部６ｂ，６ｃ
の内壁面の先端にそれぞれ突設された左右の突縁
６ｅ，６ｅとによつて中空リング状に形成され、
パツキン６の内部には空洞部６ａが全周にわたつ
て貫設されるとともに、パツキン６の底部には流
体をパツキン６の空洞部６ａ内へ流入させるため
の流通口１２が全周にわたつて開設されている。
パツキン６の管端側の側壁部６ｃの外壁面に対し
その中央部付近から先端縁にわたつて周状に凹設
された切欠部１３内には硬質合成樹脂材でリング
状に形成されて管端３に摺接される摺接リング８
が嵌入固着されて側壁部６ｃの外壁面に添着さ
れ、この摺接リング８の外側面は管端２の螺進中
に管端面３とパツキン６の管端側の側壁部６ｃと
の摺接を禁止するために管端側の側壁部６ｃの外
壁面から僅かに突出されている。パツキン６の屈
伸部６ｄはパツキン６を両側方から挟圧したとき
に屈伸部６ｄがその中央部で２つ折りにされて常
に同一形態で曲げ変形するように流通口１２側へ
若干凹曲されている。 The gasket 6 includes left and right side walls 6b, 6c, a bending/stretching part 6d connected to the proximal ends of the both side walls 6b, 6c so as to be bendable, and both side walls 6b, 6c.
It is formed into a hollow ring shape by left and right projecting edges 6e, 6e respectively protruding from the tips of the inner wall surface of the
Inside the packing 6, a cavity 6a is provided extending all around the circumference, and at the bottom of the packing 6, a flow port 12 for allowing fluid to flow into the cavity 6a of the packing 6 is provided all around the circumference. It has been established.
A ring-shaped notch 13 made of a hard synthetic resin is formed in the outer wall surface of the side wall 6c on the pipe end side of the packing 6 from near the center to the tip edge. A sliding ring 8 that slides into contact with the end 3
is fitted and fixed to the outer wall surface of the side wall portion 6c, and the outer surface of the sliding ring 8 is in sliding contact with the tube end surface 3 and the side wall portion 6c on the tube end side of the packing 6 while the tube end 2 is screwing. In order to prevent this, the tube is slightly protruded from the outer wall surface of the side wall portion 6c on the tube end side. The bent portion 6d of the packing 6 is slightly concavely bent toward the flow port 12 so that when the packing 6 is squeezed from both sides, the bent portion 6d is folded in half at the center and always bends and deforms in the same form. There is.
ホルダ７には断面が先細状に形成されて管端２
内に対し密嵌状に嵌挿される嵌挿部７と、この嵌
挿部７ａの基端部の肉厚より縮小された肉厚を有
する円筒状に形成されてパツキン６が密嵌状に外
嵌される胴部７ｂとが段部１４を介して段差状に
連設されるとともに、ホルダ７の一端部にはパツ
キン６の反管端側の側壁部６ｂが密接状に当接し
かつ管継手３の抜け止め部１０に当接する突条１
５が全周にわたつて突設されて胴部７ｂに連接さ
れている。突条１５の外側面には管継手４の掛合
部１１に対し係脱可能に弾性掛合してホルダ７を
センタ孔５内で係止するために弾性変形可能に形
成された係止爪１６が全周にわたつて突設されて
いる。 The holder 7 has a tapered cross section so that the tube end 2
A fitting part 7 is fitted tightly into the inside of the fitting part 7a, and the packing 6 is formed into a cylindrical shape having a wall thickness smaller than that of the proximal end of the fitting part 7a, and the packing 6 is tightly fitted to the outside. The body portion 7b to be fitted is connected in a stepped manner via the stepped portion 14, and the side wall portion 6b of the gasket 6 on the opposite end of the pipe is in close contact with one end of the holder 7, and the pipe joint is connected to the body portion 7b. The protrusion 1 that comes into contact with the retaining part 10 of 3
5 protrudes over the entire circumference and is connected to the body portion 7b. A locking pawl 16 is formed on the outer surface of the protrusion 15 to be elastically deformable in order to releasably engage with the hooking portion 11 of the pipe joint 4 and lock the holder 7 in the center hole 5. It protrudes all the way around.
パツキン６は、反管端側の側壁部６ｂがホルダ
７の突条１５に密接して両突縁６ｅが胴部７ｂの
外周面に密接しかつ摺接リング８がホルダ７の段
部１４に係止されてパツキン６が軸方向の両側へ
抜け止めされた状態で、ホルダ７の胴部７ｂに対
し密嵌状に嵌装されてホルダ７の突条１５と段部
１４との間に介座され、ホルダ７はパツキン６が
摺接リング８とともにホルダ７に嵌装され、係止
爪１６が掛合部１１に掛合した状態でセンタ孔５
内にセツトされる。 The packing 6 has a side wall portion 6b on the opposite end of the tube that is in close contact with the protrusion 15 of the holder 7, both protruding edges 6e that are in close contact with the outer peripheral surface of the body portion 7b, and a sliding ring 8 that is in close contact with the stepped portion 14 of the holder 7. In the state where the gasket 6 is locked and prevented from coming off on both sides in the axial direction, it is tightly fitted into the body 7b of the holder 7 and is interposed between the protrusion 15 and the stepped portion 14 of the holder 7. The holder 7 is inserted into the center hole 5 with the gasket 6 and the sliding ring 8 fitted into the holder 7, and the locking claw 16 engaged with the engaging portion 11.
is set within.
ホルダ７の胴部７ｂにはホルダ９の内部とパツ
キン６の流通口１２とを連通して流体をホルダ９
の内部から流通口１２を通じてパツキン６の空洞
部６ｄ内へ流入させるために周方向へ配列された
適数個の連通孔１７が貫設されている。 The body 7b of the holder 7 communicates the inside of the holder 9 with the flow port 12 of the gasket 6 to supply fluid to the holder 9.
A suitable number of communication holes 17 arranged in the circumferential direction are penetrated to allow flow from the inside of the gasket 6 to the cavity 6d of the packing 6 through the communication port 12.
パツキン６、摺接リング８およびホルダ７を管
継手４のセンタ孔５内にセツトした状態で、管端
２を管継手４に接続するに際し、管端２を管継手
４の内ねじ５ａ内にねじ込んで、管端面３が摺接
リング８に当接する位置からさらに螺進端へ螺進
すると、パツキン６の管端側の側壁部６ｃが摺接
リング８を介して突条１５側へ押込まれてパツキ
ン６が幅方向へ圧縮変形し、パツキン６の屈伸部
６ｄの両側縁付近がそれぞれセンタ孔５の周面に
圧接される。この状態で、流体を鋼管１内を流動
させると、流体が各連通孔１７を通じてホルダ７
内から圧縮変形したパツキン６内へ流入し、パツ
キン６が流体圧によつて断面方向へ膨張してパツ
キン６の管端側の側壁部６ｃが管端面３に密接す
るとともに、屈伸部６ｄの両側縁付近がセンタ孔
５の周面に対し強固に圧接し、管端面３付近がセ
ンタ孔５の周面と、ホルダ７の胴部７ｂの外周面
との間に充満したパツキン６によつて密封状にシ
ールされ、流体と管端面３との接触がパツキン６
によつて阻止される。 When connecting the pipe end 2 to the pipe fitting 4 with the packing 6, sliding ring 8 and holder 7 set in the center hole 5 of the pipe fitting 4, insert the pipe end 2 into the internal thread 5a of the pipe fitting 4. When screwed in and further spiraled from the position where the tube end surface 3 contacts the sliding contact ring 8 to the screw end, the side wall portion 6c of the packing 6 on the tube end side is pushed through the sliding contact ring 8 toward the protrusion 15 side. The packing 6 is compressively deformed in the width direction, and the vicinity of both side edges of the bending portion 6d of the packing 6 are pressed against the circumferential surface of the center hole 5, respectively. In this state, when fluid is made to flow inside the steel pipe 1, the fluid passes through each communication hole 17 to the holder 7.
It flows from inside into the packing 6 which has been compressively deformed, and the packing 6 expands in the cross-sectional direction due to the fluid pressure, so that the side wall 6c of the packing 6 on the tube end side comes into close contact with the tube end surface 3, and both sides of the bending portion 6d The vicinity of the edge is firmly pressed against the circumferential surface of the center hole 5, and the vicinity of the tube end surface 3 is sealed by the packing 6 filled between the circumferential surface of the center hole 5 and the outer circumferential surface of the body 7b of the holder 7. The contact between the fluid and the tube end surface 3 is prevented by the seal 6.
blocked by.
続いて、上記した構成をもつ実施例の作用と効
果を説明する。 Next, the operation and effects of the embodiment having the above configuration will be explained.
本例では管端２が接続される管継手４のセンタ
孔５内に装入されたほぼ円筒状のホルダ７にはセ
ンタ孔５の周面に突設した抜け止め部１０に当接
させるために突設された突条１５と、抜け止め部
１０に凹設された掛合部１１に対し係脱可能に掛
合させるために突設された係止爪１６とを形成
し、ホルダ７には中空リング状で断面方向への弾
性曲げ変形可能に形成されかつ底部に流通口１２
が開設されたパツキン６を、このパツキン６の管
端側の側壁部６ｃに添着したリング状の摺接リン
グ８がホルダ７に形成した段部１４に係止されて
パツキン６が突条１５と段部１４との間に介座さ
れるように嵌装し、さらに、ホルダ７にはこのホ
ルダ７の内部と流通口１２とを連通するために適
数個の連通孔１７を貫設してある。 In this example, a substantially cylindrical holder 7 inserted into the center hole 5 of the pipe joint 4 to which the pipe end 2 is connected is made to abut against a retaining portion 10 protruding from the circumferential surface of the center hole 5. A protrusion 15 protruding from the holder 7 and a locking pawl 16 protruding from the retaining part 10 to releasably engage the engaging part 11 recessed in the retaining part 10 are formed. It is formed in a ring shape so that it can be elastically bent and deformed in the cross-sectional direction, and has a flow port 12 at the bottom.
A ring-shaped sliding ring 8 attached to the side wall 6c of the pipe end side of the packing 6 is locked to a stepped portion 14 formed on the holder 7, and the packing 6 is connected to the protrusion 15. The holder 7 is fitted so as to be interposed between the step part 14 and the holder 7, and an appropriate number of communication holes 17 are formed through the holder 7 to communicate the inside of the holder 7 and the communication port 12. be.
このため、ホルダ７をこのホルダ７にパツキン
６を嵌装した状態で管継手４のセンタ孔５内に対
しワンタツチで容易にセツトするとができ、パツ
キン６およびホルダ７の管継手４への取付け操作
および管継手４からの取外し操作を簡易化するこ
とができる。 Therefore, the holder 7 can be easily set into the center hole 5 of the pipe fitting 4 with one touch with the packing 6 fitted into the holder 7, and the operation of attaching the packing 6 and the holder 7 to the pipe fitting 4 is easy. Also, the removal operation from the pipe joint 4 can be simplified.
また、管端２を管継手４のセンタ孔５内に嵌込
んで流体を鋼管１内を流通させた状態では、圧縮
変形したパツキン６がその内部に流入した流体の
流体圧によつて膨張して管端面３やセンタ孔５の
周面に対し強固に圧接するので、管端面３に対す
るシール効果および防蝕効果を高めることができ
る。 Furthermore, when the pipe end 2 is fitted into the center hole 5 of the pipe joint 4 and fluid is allowed to flow through the steel pipe 1, the compressively deformed packing 6 expands due to the fluid pressure of the fluid flowing into the pipe fitting 4. Since it is firmly pressed against the tube end surface 3 and the circumferential surface of the center hole 5, the sealing effect and corrosion prevention effect on the tube end surface 3 can be enhanced.
さらに、本例では管端３がパツキン６に付設し
た摺接リング８に摺接しながら螺進してパツキン
６を無接触状態で圧縮変形させるので、パツキン
６が管端３のねじ込みによつて損傷する不具合を
排除することができる。 Furthermore, in this example, the tube end 3 screws forward while slidingly contacting the sliding contact ring 8 attached to the packing 6, compressing and deforming the packing 6 without contact, so that the packing 6 is not damaged by the screwing of the tube end 3. problems that occur can be eliminated.
次に、第４図に示す本考案の第２実施例につい
て説明すると、本例ではソケツト形の管継手４Ａ
のセンタ孔５Ａの周面の中央部にはセンタ孔５Ａ
内の両側に対し左右対称状に装入される１対のホ
ルダ７の突条１５をそれぞれ当接させるために幅
が拡大された抜け止め部１０Ａが環状に突設され
るとともに、この抜け止め部１０Ａの先端には両
ホルダ７の係止爪１６を係脱可能に弾性係止する
ために左右１対の係合部１１Ａ，１１Ａが全周に
わたつて並行状に凹設されている外は、第１実施
例と同様に構成されている。 Next, a second embodiment of the present invention shown in FIG. 4 will be explained. In this embodiment, a socket type pipe joint 4A is used.
The center hole 5A is located in the center of the circumferential surface of the center hole 5A.
A retaining portion 10A with an enlarged width is provided in an annular shape so that the protrusions 15 of a pair of holders 7 that are inserted symmetrically on both sides of the interior abut each other. At the tip of the portion 10A, a pair of left and right engaging portions 11A, 11A are recessed in parallel over the entire circumference in order to elastically lock the locking claws 16 of both holders 7 in a detachable manner. is configured similarly to the first embodiment.
なお、第２実施例の作用と効果については第１
実施例と同様であるため、その説明は省略する。 The functions and effects of the second embodiment are explained in the first embodiment.
Since it is similar to the embodiment, its explanation will be omitted.
第１図〜第３図は本考案の第１実施例を示すも
ので、第１図は管端防蝕機構を示す側断面図、第
２図、第３図はパツキンの変形挙動を順に示す要
部の拡大断面図、第４図は第２実施例の管端防蝕
機構を示す半側断面図である。
２……管端、４，４Ａ……管継手、５，５Ａ…
…センタ孔、６……パツキン、７……ホルダ、１
０……抜け止め部、１２……流通口、１５……突
条、１７……連通孔。
Figures 1 to 3 show the first embodiment of the present invention, with Figure 1 being a side sectional view showing the tube end corrosion protection mechanism, and Figures 2 and 3 showing the deformation behavior of the packing in order. FIG. 4 is a half-side sectional view showing the tube end corrosion protection mechanism of the second embodiment. 2...Pipe end, 4,4A...Pipe fitting, 5,5A...
...Center hole, 6...Packing, 7...Holder, 1
0... Retaining portion, 12... Distribution port, 15... Projection, 17... Communication hole.
Claims (1)
れたほぼ円筒状のホルダには前記センタ孔の周面
に突設した抜け止め部に当接させるための突条を
突設するとともに、前記ホルダには中空リング状
で断面方向への弾性曲げ変形可能に形成されかつ
底部に流通口が開設されたパツキンを、このパツ
キンが前記管端の螺進によつてこの管端と前記突
条との間で圧縮変形するように嵌装し、さらに、
前記ホルダにはこのホルダの内部と前記流通口と
を連通するために適数個の連通孔を貫設したこと
を特徴とする管端防蝕機構。 A substantially cylindrical holder inserted into the center hole of the pipe joint to which the pipe end is connected is provided with a protrusion for abutting against a retaining portion protruding from the circumferential surface of the center hole. , the holder has a hollow ring-shaped packing that is elastically bendable in the cross-sectional direction and has a flow port at the bottom, and this packing connects the tube end and the protrusion by the screwing of the tube end. It is fitted so as to be compressively deformed between the strips, and further,
A pipe end corrosion protection mechanism, characterized in that the holder is provided with an appropriate number of communication holes for communicating the inside of the holder with the communication port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9163089U JPH0538312Y2 (en) | 1989-08-03 | 1989-08-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9163089U JPH0538312Y2 (en) | 1989-08-03 | 1989-08-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0330690U JPH0330690U (en) | 1991-03-26 |
| JPH0538312Y2 true JPH0538312Y2 (en) | 1993-09-28 |
Family
ID=31641104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9163089U Expired - Lifetime JPH0538312Y2 (en) | 1989-08-03 | 1989-08-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0538312Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2021028534A (en) * | 2019-08-09 | 2021-02-25 | Ｃラボラトリ株式会社 | Joint structure and metal mold cooling mechanism |
-
1989
- 1989-08-03 JP JP9163089U patent/JPH0538312Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0330690U (en) | 1991-03-26 |
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