JPH0579172U - Flange pipe fitting - Google Patents
Flange pipe fittingInfo
- Publication number
- JPH0579172U JPH0579172U JP1856892U JP1856892U JPH0579172U JP H0579172 U JPH0579172 U JP H0579172U JP 1856892 U JP1856892 U JP 1856892U JP 1856892 U JP1856892 U JP 1856892U JP H0579172 U JPH0579172 U JP H0579172U
- Authority
- JP
- Japan
- Prior art keywords
- joint
- pipe
- pipe end
- end cap
- pipes
- 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.)
- Pending
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- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
(57)【要約】
【目的】 接合管の強度を維持できるうえ、大径のもの
にも適用でき、さらに寸法管理が容易となり、管端シー
ルと防食を低コストのもとで実現できるようにする。
【構成】 接合管2A,2Bの管端部に外装された継手
本体1A,1Bの各フランジ3A,3B同士を締付部材
6,7で締着し、上記継手本体1A,1Bの内周面の環
状錐面部10A,10Bで押圧されて接合管2A,2B
の外周面に喰い込み状に圧接するロックリング12A,
12Bで抜け止めし、管端キャップ部13A,13B、
シールリング部14A,14Bおよびリテーナ部15
A,15Bを有する管端キャップ部材17A,17Bを
上記継手本体1A,1Bと接合管2A,2Bとの間に介
在させた構成とする。
(57) [Summary] [Purpose] In addition to maintaining the strength of the joint pipe, it can also be applied to large diameter pipes, facilitates dimensional control, and realizes pipe end sealing and corrosion protection at low cost. To do. [Structure] The flanges 3A and 3B of the joint bodies 1A and 1B, which are externally mounted on the pipe ends of the joint pipes 2A and 2B, are fastened with fastening members 6 and 7, and the inner peripheral surfaces of the joint bodies 1A and 1B are joined. Of the joint pipes 2A, 2B pressed by the annular conical surface portions 10A, 10B of
Lock ring 12A that bites into the outer peripheral surface of the
12B to prevent it from coming off, and pipe end caps 13A, 13B,
Seal ring portions 14A, 14B and retainer portion 15
The pipe end cap members 17A and 17B having A and 15B are interposed between the joint bodies 1A and 1B and the joint pipes 2A and 2B.
Description
【0001】[0001]
本考案は、たとえば給水・給湯用配管工事等において、内面に防食用ライニン グ層を有する鋼管のような接合管同士の接続のために使用されるフランジ管用継 手に関するものである。 The present invention relates to a flange pipe joint used for connecting joint pipes, such as steel pipes having an anticorrosion lining layer on the inner surface thereof in, for example, water supply / hot water supply piping work.
【0002】[0002]
従来のこの種の継手として、図5に示すように、それぞれフランジ41a,4 1bを有する継手本体41A,41Bの内周面に雌ねじ部42A,42Bを形成 する一方、内周面に防食用の樹脂ライニング層43A,43Bが形成された鋼管 のような接合管44A,44Bの外周面に雄ねじ部45A,45Bを形成して、 上記継手本体41A,41Bの雌ねじ部42A,42Bをそれぞれ接合管44A ,44Bの雄ねじ部45A,45Bに螺合するとともに、継手本体41A,41 Bのフランジ41a,41a間にガスケット46を介在して、両フランジ41a ,41aを複数のボルト47およびナット48により締め付け固定するようにし たものが知られている。 As a conventional joint of this type, as shown in FIG. 5, female threaded portions 42A and 42B are formed on the inner peripheral surfaces of joint bodies 41A and 41B having flanges 41a and 41b, respectively, while the inner peripheral surfaces of the joint main bodies 41A and 41B are provided with corrosion protection. Male threads 45A, 45B are formed on the outer peripheral surfaces of the joining pipes 44A, 44B such as steel pipes on which the resin lining layers 43A, 43B are formed, and the female threads 42A, 42B of the joint bodies 41A, 41B are joined to the joining pipes 44A, respectively. , 44B are screwed into the male screw portions 45A, 45B, and a gasket 46 is interposed between the flanges 41a, 41a of the joint bodies 41A, 41B, and both flanges 41a, 41a are tightened and fixed by a plurality of bolts 47 and nuts 48. It is known to have done so.
【0003】 また、上記のものとは別に、図6に示すように、接合管44A,44Bの管端 部外周面にフランジ49A,49Bを溶接にて固定し、これらフランジ49A, 49Bを、その間にガスケット46を介在させてボルト47およびナット48で 締め付けるようにしたものも知られている。In addition to the above, as shown in FIG. 6, flanges 49A and 49B are fixed to the outer peripheral surfaces of the pipe ends of the joining pipes 44A and 44B by welding, and the flanges 49A and 49B are fixed between them. It is also known that a gasket 46 is interposed between the bolts and the bolts 47 and nuts 48 are used for tightening.
【0004】[0004]
上記したような構成の従来のフランジ管用継手のうち、前者のものは、接合管 44A,44Bの管端部外周面にねじ加工を施さねばならないので、加工上の制 約から比較的小径の接合管にしか適用できないうえ、ねじ加工が施されている接 合管部分の機械的強度が低下し、管端シールも十分に発揮させにくい。また、継 手本体41A,41Bが螺合構造で装着されるので、ボルト挿通孔50A,50 Bの位置ずれ調整によって継手本体41A,41Bを無理に適正螺合位置からず らさなければならない場合があり、さらに、僅かな寸法誤差があっても、接合管 44A,44Bの管端同志の当接によってボルト47およびナット48による締 付け量が制約されて締付け不良などを招きやすく、したがって、厳しい寸法管理 が必要となる。 Among the conventional flange pipe joints having the above-described structure, the former one requires threading on the outer peripheral surfaces of the pipe end portions of the joint pipes 44A and 44B, so that the joints of relatively small diameter are restricted due to machining restrictions. In addition to being applicable only to pipes, the mechanical strength of the threaded jointed pipes will be reduced, and it will be difficult to achieve sufficient pipe end sealing. In addition, since the joint bodies 41A and 41B are mounted in a screwed structure, the joint bodies 41A and 41B must be forcibly displaced from the proper screwed position by adjusting the positional deviation of the bolt insertion holes 50A and 50B. In addition, even if there is a slight dimensional error, the amount of tightening by the bolts 47 and nuts 48 is restricted by the abutment of the pipe ends of the joint pipes 44A, 44B, and it is easy to cause improper tightening. Dimension management is required.
【0005】 また、後者のものは、接合管44A,44Bの管端までを防食用の樹脂ライニ ング層43A,43Bで覆えるが、これは特殊なライニング方法に依存しなけれ ばならず、コスト高になる。また、フランジ49A,49Bを予め工場で溶接・ ライニングしておかなければならないので、納期の短縮化の障害にもなり、さら に、定尺管に対応したものであるので、現場での寸法調整ができない。In the latter, the pipe ends of the joint pipes 44A and 44B can be covered with the resin lining layers 43A and 43B for corrosion protection, but this must depend on a special lining method, and the cost is low. Get high In addition, since the flanges 49A and 49B must be welded and lined in advance at the factory, this is an obstacle to shortening the delivery time, and since it is compatible with standard length pipes, dimensional adjustment at the site. I can't.
【0006】 本考案は上記のような問題点を解消するためになされたもので、接合管にねじ 加工したり、フランジを工場で溶接・ライニングすることなく、現場で容易かつ 確実にメカニカル接合することができ、また、コストの低減化も図ることができ るフランジ管用継手を提供することを目的としている。The present invention has been made to solve the above-mentioned problems, and enables easy and reliable mechanical joining in the field without screwing the jointed pipe or welding / lining the flange in the factory. It is an object of the present invention to provide a flange pipe joint that can be manufactured at a reduced cost.
【0007】[0007]
上記目的を達成するため、本考案に係るフランジ管用継手は、互いに接続され る接合管の各管端部に外装されるフランジ付継手本体と、これら両継手本体のフ ランジ同士を軸方向から締め付ける締付部材と、上記締付時に継手本体の内周側 に形成の環状錐面部に押圧されて接合管の管端部外周面に喰い込み状に圧接する 抜け止め用ロックリングと、上記各接合管の内周面から各継手本体の対向側面に かけての部位を層状に被う管端キャップ部、上記各継手本体の内周面と各接合管 の外周面との間を封止するシールリング部およびシールリング押込用リテーナ部 を有し、上記各継手本体の内周面と各接合管の外周面との間に介在される管端キ ャップ部材とを備えたものである。 In order to achieve the above object, a flange pipe joint according to the present invention is such that a flanged joint body that is mounted on each pipe end portion of a joint pipe that is connected to each other and the flanges of these joint bodies are tightened from the axial direction. The tightening member, the lock ring for retaining that is pressed against the annular conical surface formed on the inner peripheral side of the joint body at the time of the above-mentioned tightening and presses the outer peripheral surface of the pipe end in a biting manner, and the above-mentioned joints. A pipe end cap that covers the region from the inner peripheral surface of the pipe to the opposing side surface of each joint body in layers, and a seal that seals between the inner peripheral surface of each joint body and the outer peripheral surface of each joint pipe. And a pipe end cap member interposed between the inner peripheral surface of each of the joint main bodies and the outer peripheral surface of each of the joint pipes.
【0008】 上記管端キャップ部材の管端キャップ部、シールリング部およびリテーナ部を それぞれ別体に形成してもよいし、また、それらを一体化してもよい。The pipe end cap portion, the seal ring portion, and the retainer portion of the pipe end cap member may be separately formed, or they may be integrated.
【0009】[0009]
本考案によれば、互いに接続される接合管の各管端部にフランジ付継手本体を 外装し、さらに、この継手本体の内周面と接合管の外周面との間に抜け止め用ロ ックリングおよび管端キャップ部材を順次挿入してから上記継手本体の各フラン ジ同士を締付部材で締め付ければ、ロックリングが接合管の外周面に喰い込み状 に圧接する。このため、接合管にねじ加工をしないでもメカニカル接合が達成さ れるとともに、管端キャップ部材により管端シールと防食機能が付与される。ま た、接合管にねじ加工を施さないので、大径ものにも適用可能となり、強度も確 保されるうえ、ねじシールしないため、寸法誤差等に関係なく、一定の締付け力 での接合状態を得ることができる。さらに、特殊ライニング法を用いないので安 価に製作でき、また、フランジを工場で溶接したりする必要もなく、納期も早め ることが可能となる。 According to the present invention, a joint body with a flange is provided on each pipe end portion of a joint pipe connected to each other, and a locking ring for retaining is provided between an inner peripheral surface of the joint body and an outer peripheral surface of the joint pipe. Then, after inserting the pipe end cap member in sequence and tightening the flanges of the joint body with the tightening member, the lock ring presses the outer peripheral surface of the joint pipe in a biting manner. For this reason, mechanical joining is achieved without screwing the joined pipe, and the pipe end cap member provides the pipe end seal and the anticorrosion function. In addition, since the joint pipe is not threaded, it can be applied to large diameter pipes, its strength is secured, and since it is not screw-sealed, it can be joined with a constant tightening force regardless of dimensional errors. Can be obtained. Furthermore, since no special lining method is used, it can be manufactured at a low cost, and there is no need to weld the flange at the factory, and the delivery time can be shortened.
【0010】 また、管端キャップ部、シールリング部およびリテーナ部を別体に形成する場 合は、それぞれの部位による機能を十分に発揮させることができ、さらに、それ らを一体化する場合は、部品点数を少なくすることができ、現場での組付けが容 易となる。Further, when the pipe end cap portion, the seal ring portion and the retainer portion are formed separately, the functions of the respective portions can be sufficiently exerted, and further, when they are integrated, However, the number of parts can be reduced, which facilitates on-site assembly.
【0011】[0011]
以下、本考案の実施例を図面にもとづいて説明する。 図1および図2はそれぞれ本考案の一実施例によるフランジ管用継手を接合時 および接合完了時の状態で示す半截断面図である。 Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are half cross-sectional views showing a joint for a flange pipe according to an embodiment of the present invention at the time of joining and at the time of completion of joining, respectively.
【0012】 図1および図2において、1A,1Bは互いに接続される鋼管のような接合管 2A,2Bの管端部にそれぞれ外装される筒形の継手本体であり、それらの各外 周側には、フランジ3A,3Bが一体形成されている。4A,4Bは上記接合管 2A,2Bの内面に形成された防食用樹脂ライニング層である。上記各フランジ 3A,3Bには、周方向に等間隔を置いて複数のボルト挿通孔5A,5Bが形成 されており、上記フランジ3A,3Bは締付部材として上記ボルト挿通孔5A, 5Bに挿通されたボルト6およびナット7によって締め付け固定されるようにな っている。また、上記継手本体1A,1Bの各内周面には、管端側から順次、大 径部8A,8B、小径部9A,9B、環状錐面部10A,10Bおよび凹溝11 A,11Bがそれぞれ形成されている。In FIGS. 1 and 2, reference numerals 1A and 1B denote tubular joint bodies that are respectively fitted to the pipe ends of joining pipes 2A and 2B such as steel pipes that are connected to each other. The flanges 3A and 3B are integrally formed on the. Reference numerals 4A and 4B are anticorrosion resin lining layers formed on the inner surfaces of the above-mentioned joint pipes 2A and 2B. Plural bolt insertion holes 5A and 5B are formed in the flanges 3A and 3B at equal intervals in the circumferential direction, and the flanges 3A and 3B are inserted into the bolt insertion holes 5A and 5B as fastening members. The bolts 6 and the nuts 7 are tightened and fixed. Further, on the inner peripheral surfaces of the joint bodies 1A and 1B, the large diameter portions 8A and 8B, the small diameter portions 9A and 9B, the annular conical surface portions 10A and 10B, and the concave grooves 11A and 11B are sequentially arranged from the pipe end side. Has been formed.
【0013】 12A,12Bは上記環状錐面部10A,10Bに対応して上記接合管2A, 2Bに外嵌された、接合管2A,2Bよりも表面硬度の高い材質のC字形の金属 製の抜け止め用ロックリングであり、その横断面は管端側から軸方向へ沿って先 細り状の楔形に形成されており、締付時に上記錐面部10A,10Bに押圧され た際に接合管2A,2Bの外周面に喰い込み状に圧接されるものである。Reference numerals 12A and 12B denote C-shaped metal-made metal plugs, which are externally fitted to the joint pipes 2A and 2B corresponding to the annular conical surface portions 10A and 10B, and which have a higher surface hardness than the joint pipes 2A and 2B. It is a lock ring for stopping, and its cross-section is formed in a tapered wedge shape from the pipe end side along the axial direction, and when it is pressed against the conical surface portions 10A, 10B, the joint pipe 2A, It is pressed against the outer peripheral surface of 2B in a biting manner.
【0014】 13A,13Bは上記接合管2A,2Bの内周面から継手本体1A,1Bの側 面にかけの部位を層状に被う断面L形の管端シール用の管端キャップ部であり、 たとえば耐熱性の合成ゴム等から構成されている。14A,14Bは上記継手本 体1A,1Bにおける小径部9A,9Bに圧入されるシールリング部としてのゴ ム輪、15A,15Bは接合管2A,2Bの管端面に当接して上記大径部8A, 8Bに嵌入される断面L形の合成樹脂製の第1のリテーナであり、締付時に上記 ゴム輪14A,14Bを介して上記ロックリング12A,12Bを錐面部10A ,10B側へ変位させるものであり、この第1のリテーナ15A,15Bは段付 きに形成されている。上記各ロックリング12A,12Bとゴム輪14A,14 Bとの間に金属製で円環状の第2のリテーナ16A,16Bが介在されている。 上記管端キャップ部13A,13B、ゴム輪14A,14Bおよび第1のリテー ナ15A,15B等により、シール用の管端キャップ部材17A,17Bを構成 している。Reference numerals 13A and 13B denote pipe end cap portions for sealing the pipe end having an L-shaped cross section, which cover the portion extending from the inner peripheral surface of the above-mentioned joint pipes 2A and 2B to the side surfaces of the joint bodies 1A and 1B in layers. For example, it is made of heat-resistant synthetic rubber or the like. 14A and 14B are rubber rings as seal ring parts that are press-fitted into the small diameter parts 9A and 9B of the joint bodies 1A and 1B, and 15A and 15B are in contact with the pipe end faces of the joint pipes 2A and 2B and the large diameter parts are joined. 8A, 8B is a first retainer made of synthetic resin having an L-shaped cross section, which is fitted into 8A, 8B, and displaces the lock rings 12A, 12B toward the conical surface portions 10A, 10B via the rubber rings 14A, 14B at the time of tightening. The first retainers 15A and 15B are formed in steps. Between the lock rings 12A, 12B and the rubber rings 14A, 14B, there are disposed second annular retainers 16A, 16B made of metal. The tube end cap portions 13A, 13B, the rubber rings 14A, 14B, the first retainers 15A, 15B, etc. constitute tube end cap members 17A, 17B for sealing.
【0015】 18A,18Bは上記凹溝11A,11Bに嵌着されて継手本体1A,1Bの 内周面と接合管2A,2Bとの間をシールする防水パッキングである。Reference numerals 18A and 18B are waterproof packings that are fitted into the recessed grooves 11A and 11B and seal between the inner peripheral surfaces of the joint bodies 1A and 1B and the joint pipes 2A and 2B.
【0016】 つぎに、上記構成のフランジ管用継手による接合管2A,2Bの接合手順につ いて説明する。 ます、予め、継手本体1A,1Bの凹溝11A,11Bに防水パッキング18 A,18Bを嵌着しておく。ついで、この継手本体1A,1Bを接合管2A,2 Bの管端部に外装し、この状態で、各継手本体1A,1Bの内周面と接合管2A ,2Bの外周面との間に、それぞれ上記ロックリング12A,12B、第2のリ テーナ16A,16B、ゴム輪14A,14Bをこの順で嵌め込み、さらに、第 1のリテーナ15A,15Bを継手本体1A,1Bの内周面の大径部8A,8B に嵌入し、最後に、上記第1のリテーナ15A,15Bの外端面に当るように管 端キャップ部13A,13Bを上記接合管2A,2Bの管端部内に嵌入する。両 接合管2A,2Bに対してこのように各部品をセットした後、図1に示すように 、継手本体1A,1Bのボルト挿通孔5A,5Bにボルト6を挿通し、ナット7 とでフランジ3A,3Bを締め付ける。Next, a procedure for joining the joining pipes 2A and 2B with the above-configured flange pipe joint will be described. First, the waterproof packings 18A and 18B are fitted into the concave grooves 11A and 11B of the joint bodies 1A and 1B in advance. Next, the joint bodies 1A and 1B are sheathed on the pipe ends of the joint pipes 2A and 2B, and in this state, between the inner peripheral surface of each joint body 1A and 1B and the outer peripheral surface of the joint pipes 2A and 2B. The lock rings 12A and 12B, the second retainers 16A and 16B, and the rubber rings 14A and 14B are fitted in this order, respectively, and the first retainers 15A and 15B are attached to the inner peripheral surfaces of the joint bodies 1A and 1B. The pipe end cap portions 13A and 13B are fitted into the diameter portions 8A and 8B, and finally, the pipe end cap portions 13A and 13B are fitted into the pipe ends of the joining pipes 2A and 2B so as to contact the outer end surfaces of the first retainers 15A and 15B. After setting each part in this way for both joint pipes 2A and 2B, as shown in FIG. 1, insert bolts 6 into the bolt insertion holes 5A and 5B of the joint bodies 1A and 1B, and use the nuts 7 and Tighten 3A and 3B.
【0017】 上記継手本体1A,1Bのフランジ3A,3Bを締め付けると、図2に示すよ うに、管端キャップ部13A,13Bによって、第1のリテーナ15A,15B が継手本体1A,1Bの大径部8A,8Bに完全に嵌着されるので、ゴム輪14 A,14Bが小径部9A,9B内に圧入され、さらに、第2のリテーナ16A, 16Bを介してロックリング12A,12Bも環状錐面部10A,10Bに当る 所定位置まで正確に押し込まれる。ここで、上記ゴム輪14A,14B、第2の リテーナ16A,16Bは左右対称形であるが、ロックリング12A,12Bは 方向性があって、接合時にその方向性を逆にした入れ間違いを招くケースが考え られるけれども、この場合、上記第1のリテーナ15A,15Bが段付きである ために、上記ロックリング12A,12Bに押圧されたゴム輪14A,14Bが 図3に示すように、第1のリテーナ15A,15Bと継手本体1A,1Bとの間 の空所に入り込むように変形し、その結果、継手本体1A,1Bと管端キャップ 部13A,13Bとの間に隙間xが生じる形となり、したがって、ロックリング 12A,12Bの向きが逆になった入れ間違いを容易に発見することができる。When the flanges 3A, 3B of the joint bodies 1A, 1B are tightened, as shown in FIG. 2, the pipe retainer caps 13A, 13B cause the first retainers 15A, 15B to have large diameters of the joint bodies 1A, 1B. Since the rubber rings 14A, 14B are press-fitted into the small-diameter portions 9A, 9B because they are completely fitted to the portions 8A, 8B, the lock rings 12A, 12B are also annular pyramids via the second retainers 16A, 16B. It hits the surface portions 10A and 10B and is accurately pushed into a predetermined position. Here, the rubber rings 14A, 14B and the second retainers 16A, 16B are bilaterally symmetrical, but the lock rings 12A, 12B have directionality, and when they are joined, the directionality is reversed, causing an insertion error. Although a case may be considered, in this case, since the first retainers 15A and 15B are stepped, the rubber rings 14A and 14B pressed by the lock rings 12A and 12B are not shown in FIG. It deforms so as to enter the space between the retainers 15A, 15B and the joint bodies 1A, 1B, and as a result, a gap x is formed between the joint bodies 1A, 1B and the pipe end cap portions 13A, 13B. Therefore, it is possible to easily find an insertion error in which the directions of the lock rings 12A and 12B are reversed.
【0018】 そして、上記所定の方向性をもって挿入されて、第2のリテーナ16A,16 Bにより押し込まれたロックリング12A,12Bは上記継手本体1A,1Bの 環状錐面部10A,10Bに押圧されることにより、接合管2A,2Bの外周面 に喰い込み状に圧接するので、接合管2A,2Bが抜け止めされた状態で接合さ れる一方、上記管端キャップ部13A,13Bが互いに圧接し、さらに、ゴム輪 14A,14Bが小径部9A,9Bに嵌着して弾性変形しているので、管端側に シール性が付与される。また、継手本体1A,1Bの凹溝11A,11Bに嵌着 された防水パッキング18A,18Bによって外部からの水等の侵入を防止する ことができる。この時、上記管端キャップ部13A,13Bの内側部は、接合管 2A,2Bの内圧によって接合管2A,2Bの内周面に対して密着するので、管 端側の防食性も付与される。Then, the lock rings 12A, 12B inserted with the predetermined directionality and pushed in by the second retainers 16A, 16B are pushed by the annular conical surface portions 10A, 10B of the joint bodies 1A, 1B. As a result, since they come into pressure contact with the outer peripheral surfaces of the joining pipes 2A and 2B in a biting manner, the joining pipes 2A and 2B are joined in a state in which they do not come off, while the pipe end cap portions 13A and 13B come into pressure contact with each other, Further, since the rubber rings 14A and 14B are fitted into the small diameter portions 9A and 9B and elastically deformed, sealing performance is imparted to the pipe end side. Further, the waterproof packings 18A and 18B fitted in the recessed grooves 11A and 11B of the joint bodies 1A and 1B can prevent water from entering from the outside. At this time, the inner portions of the pipe end cap portions 13A and 13B are brought into close contact with the inner peripheral surfaces of the joint pipes 2A and 2B by the internal pressure of the joint pipes 2A and 2B, so that corrosion resistance on the pipe end side is also imparted. ..
【0019】 ここで、上記接合管2A,2Bの外周にねじ加工を施す必要がなくなり、比較 的大径の接合管2A,2Bの接続にも対応することができるとともに、強度の不 安も解消される。また上記継手本体1A,1Bにおけるボルト挿通孔5A,5B の位置合せのために該継手本体1A,1Bを周方向へ相対変位させたり、あるい は、接合管2A,2Bの寸法精度のばらつきがあっても、上記ロックリング12 A,12Bやゴム輪14A,14Bは所定の位置に保持されるので、シール性等 の低下を来すおそれは全くなく、適正な接合状態に維持され、接合管2A,2B の寸法管理も容易となる。なお、上記継手本体1A,1Bに対するボルト6およ びナット7の過度の締め付けは、上記継手本体1A,1Bの各フランジ対向面に 当り面3aを形成することにより、確実に防止される。Here, it is not necessary to screw the outer circumferences of the joining pipes 2A and 2B, it is possible to connect the joining pipes 2A and 2B having a comparatively large diameter, and the strength is eliminated. To be done. Further, the joint bodies 1A, 1B are relatively displaced in the circumferential direction in order to align the bolt insertion holes 5A, 5B in the joint bodies 1A, 1B, or the dimensional accuracy of the joint pipes 2A, 2B varies. Even if there is, since the lock rings 12A, 12B and the rubber rings 14A, 14B are held at predetermined positions, there is no possibility that the sealing property will be deteriorated, and the proper joining state is maintained, and the joining pipe is Dimensional control of 2A and 2B becomes easy. Excessive tightening of the bolt 6 and the nut 7 with respect to the joint bodies 1A and 1B is reliably prevented by forming a contact surface 3a on the flange facing surfaces of the joint bodies 1A and 1B.
【0020】 また、管端キャップ部13A,13Bによって管端側の防食性も付与されるの で、特殊ライニング法に比べて安価に製作でき、また、工場でフランジを溶接す る手間が省かれ、接合管2A,2Bの納期を短くすることができるとともに、接 合管2A,2Bの現場への搬入も容易になる。Further, since the pipe end cap portions 13A and 13B also provide corrosion resistance on the pipe end side, the pipe end caps 13A and 13B can be manufactured at a lower cost than the special lining method, and the labor of welding the flange at the factory can be omitted. The delivery time of the joint pipes 2A and 2B can be shortened, and the joint pipes 2A and 2B can be easily carried into the site.
【0021】 ところで、上記実施例では、継手本体1A,1Bをボルト6およびナット7で 締め付けるようにしたものであるが、このボルト6およびナット7に限定される ものではない。たとえば図4に示すように、継手本体1Aの外周面に形成された 雄ねじ部31Aに螺合する雌ねじ部32を有するユニオンナット33を締付部材 として用いるものであってもよい。By the way, in the above embodiment, the joint bodies 1A and 1B are tightened with the bolts 6 and the nuts 7, but the invention is not limited to the bolts 6 and the nuts 7. For example, as shown in FIG. 4, a union nut 33 having a female screw portion 32 screwed into a male screw portion 31A formed on the outer peripheral surface of the joint body 1A may be used as the tightening member.
【0022】 なお、上記管端キャップ部13A,13B、第1のリテーナ15A,15Bお よびゴム輪14A,14B等を一体化して構成することも可能であり、その場合 は、部品点数を少なくして、現場での組付けを一層迅速に行なえる。The pipe end cap portions 13A and 13B, the first retainers 15A and 15B, the rubber rings 14A and 14B, and the like can be integrated, and in that case, the number of parts can be reduced. Assembly on site can be done more quickly.
【0023】[0023]
以上のように、本考案の請求項1によれば、接合管の管端部に外装されて相手 方のものと締付部材で締着される継手本体に対して上記接合管をロックリングで 抜け止めし、管端キャップ部、シールリング部およびリテーナ部をもった管端キ ャップ部材を上記継手本体の内周面と接合管の外周面との間に介在させることに より、接合管の外周にねじ加工が要らず、大径のものにも対応可能となるととも に、強度低下もなくすることができ、さらに、乱尺寸法でも適正な接合関係に設 定することができ、また、フランジを溶接固定するものに比して、管端シールや 防食構造を安価にして実現することができ、納期の短縮化も図ることが可能とな る。 As described above, according to the first aspect of the present invention, the joint pipe is locked by the lock ring with respect to the joint body which is externally mounted on the pipe end portion of the joint pipe and is fastened to the mating member with the fastening member. By keeping the pipe end cap member with the pipe end cap, seal ring and retainer part between the inner peripheral surface of the joint body and the outer peripheral surface of the joint pipe, It does not require threading on the outer circumference, it can be used for large diameter ones, strength can be prevented from decreasing, and even with irregular dimensions, it is possible to set a proper joint relationship. Compared to the one in which the flange is welded and fixed, the pipe end seal and anticorrosion structure can be realized at a lower cost, and the delivery time can be shortened.
【0024】 また、本考案の請求項2のように、管端キャップ部、シールリング部およびリ テーナ部をそれぞれ別体に形成することによって、各部位による機能をそれぞれ 十分に発揮させることができ、さらに、請求項3のように、管端キャップ部、シ ールリング部およびリテーナ部を一体化する場合は、部品点数の削減により、現 場での組付けを一層容易なものとできる。Further, as in claim 2 of the present invention, by forming the pipe end cap portion, the seal ring portion, and the retainer portion separately, it is possible to sufficiently exhibit the functions of the respective portions. Further, when the pipe end cap portion, the seal ring portion and the retainer portion are integrated as in claim 3, the number of parts can be reduced, and the assembling in the field can be further facilitated.
【図1】本考案の一実施例によるフランジ管用継手を接
合時の状態で示す半截断面図である。FIG. 1 is a half cross-sectional view showing a joint for a flange pipe according to an embodiment of the present invention when being joined.
【図2】同実施例におけるフランジ管用継手を接合完了
時の状態で示す半截断面図である。FIG. 2 is a half cross-sectional view showing the flange pipe joint in the same embodiment in a state where joining is completed.
【図3】同実施例におけるフランジ管用継手の接合時に
おける部材の入れ間違いの状態を示す半截断面図であ
る。FIG. 3 is a half cross-sectional view showing a state where a member is inserted wrongly at the time of joining the flange pipe joint in the embodiment.
【図4】フランジ管用継手における締付部材の変形例を
示す半截断面図である。FIG. 4 is a half cross-sectional view showing a modified example of a tightening member in a flange pipe joint.
【図5】従来のフランジ管用継手の説明図である。FIG. 5 is an explanatory view of a conventional flange pipe joint.
【図6】別の従来のフランジ管用継手の説明図である。FIG. 6 is an explanatory view of another conventional flange pipe joint.
1A,1B 継手本体 2A,2B 接合管 3A,3B フランジ 6,7,33 締付部材 10A,10B 錐面部 12A,12B ロックリング 13A,13B 管端キャップ部 14A,14B シールリング部 15A,15B リテーナ部 17A,17B 管端キャップ部材 1A, 1B Joint body 2A, 2B Joint pipe 3A, 3B Flange 6,7,33 Tightening member 10A, 10B Conical surface part 12A, 12B Lock ring 13A, 13B Pipe end cap part 14A, 14B Seal ring part 15A, 15B Retainer part 17A, 17B Pipe end cap member
───────────────────────────────────────────────────── 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 (72)考案者 西村 一成 大阪府岸和田市田治米町153番地の1 日 本鋼管継手株式会社内─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 5 Identification number Reference number within the agency FI Technical indication location F16L 23/028 (72) Inventor Kazushige Nishimura Daily steel pipe at 153 Tajime-cho, Kishiwada-shi, Osaka Joint Co., Ltd.
Claims (3)
装されるフランジ付継手本体と、これら両継手本体のフ
ランジ同士を軸方向から締め付ける締付部材と、上記締
付時に継手本体の内周側に形成の環状錐面部に押圧され
て接合管の管端部外周面に喰い込み状に圧接する抜け止
め用ロックリングと、上記各接合管の内周面から各継手
本体の対向側面にかけての部位を層状に被う管端キャッ
プ部、上記各継手本体の内周面と各接合管の外周面との
間を封止するシールリング部およびシールリング押込用
リテーナ部を有し、上記各継手本体の内周面と各接合管
の外周面との間に介在される管端キャップ部材とを備え
たことを特徴とするフランジ管用継手。1. A flanged joint main body which is mounted on each pipe end of joint pipes connected to each other, a tightening member for axially tightening the flanges of both joint main bodies, and a joint main body at the time of tightening. A lock ring for retaining that is pressed by an annular conical surface portion formed on the inner peripheral side and presses into the outer peripheral surface of the pipe end portion of the joint pipe in a biting manner, and opposite side faces of each joint body from the inner peripheral surface of each joint pipe. A pipe end cap portion that covers the portion of the joint in layers, a seal ring portion that seals between the inner peripheral surface of each joint body and the outer peripheral surface of each joint pipe, and a retainer portion for pressing a seal ring, A flange pipe joint, comprising: a pipe end cap member interposed between an inner peripheral surface of each joint body and an outer peripheral surface of each joint pipe.
ップ部、シールリング部およびリテーナ部がそれぞれ別
体に形成されている請求項1のフランジ管用継手。2. The flange pipe joint according to claim 1, wherein the pipe end cap portion, the seal ring portion, and the retainer portion of the pipe end cap member are formed separately.
ップ部、シールリング部およびリテーナ部が一体化形成
されている請求項1のフランジ管用継手。3. The flange pipe joint according to claim 1, wherein the pipe end cap portion, the seal ring portion and the retainer portion of the pipe end cap member are integrally formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1856892U JPH0579172U (en) | 1992-03-31 | 1992-03-31 | Flange pipe fitting |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1856892U JPH0579172U (en) | 1992-03-31 | 1992-03-31 | Flange pipe fitting |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0579172U true JPH0579172U (en) | 1993-10-26 |
Family
ID=11975235
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1856892U Pending JPH0579172U (en) | 1992-03-31 | 1992-03-31 | Flange pipe fitting |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0579172U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008518171A (en) * | 2004-10-28 | 2008-05-29 | エッサー−ヴェルケ コマンディートゲゼルシャフト | Conveying tube for solids and method for manufacturing the conveying tube |
KR101626100B1 (en) * | 2015-10-22 | 2016-06-01 | 현대주철산업 주식회사 | Structure and method for fixing socket to water pipe |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5913782B2 (en) * | 1978-07-17 | 1984-03-31 | 日本電気株式会社 | digital arithmetic circuit |
-
1992
- 1992-03-31 JP JP1856892U patent/JPH0579172U/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5913782B2 (en) * | 1978-07-17 | 1984-03-31 | 日本電気株式会社 | digital arithmetic circuit |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008518171A (en) * | 2004-10-28 | 2008-05-29 | エッサー−ヴェルケ コマンディートゲゼルシャフト | Conveying tube for solids and method for manufacturing the conveying tube |
KR101626100B1 (en) * | 2015-10-22 | 2016-06-01 | 현대주철산업 주식회사 | Structure and method for fixing socket to water pipe |
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