JPH0339665Y2 - - Google Patents
Info
- Publication number
- JPH0339665Y2 JPH0339665Y2 JP9849484U JP9849484U JPH0339665Y2 JP H0339665 Y2 JPH0339665 Y2 JP H0339665Y2 JP 9849484 U JP9849484 U JP 9849484U JP 9849484 U JP9849484 U JP 9849484U JP H0339665 Y2 JPH0339665 Y2 JP H0339665Y2
- Authority
- JP
- Japan
- Prior art keywords
- flange
- flanges
- divided
- bolt hole
- bolt
- 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
- 238000005553 drilling Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000003566 sealing material Substances 0.000 description 2
- 238000005266 casting Methods 0.000 description 1
- 210000000078 claw Anatomy 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- -1 steam Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Description
【考案の詳細な説明】
目 的
（考案の産業上の利用分野）
この考案は、分割フランジを用いるフランジ継
手に関する。水、油、蒸気、気体等の搬送に用い
られる管継手として、向い合う管の端部に設けた
分割フランジをボルト止めさせるフランジ継手が
ある。このフランジ継手は、複数の固定用ボルト
孔を両分割フランジの同一円周上に穿設し、該孔
にボルトを通すようになつているが、ボルト孔の
孔あけ精度や作業環境を考慮して、ボルトより幾
分大きな径にボルト孔を穿設させている。このた
め、管の内圧を受けて、特に高圧物を搬送させよ
うとすると、対向フランジ間に、ボルトとボルト
孔との最大すきま量に応じた円周方向および半径
方向の相対的ずれが生じ、シール材と管との接触
圧をきわめて強い部分とにし、シール効果を低下
させる。[Detailed description of the invention] Purpose (industrial application field of the invention) This invention relates to a flange joint using a split flange. As a pipe joint used for conveying water, oil, steam, gas, etc., there is a flange joint in which split flanges provided at the ends of opposing pipes are bolted together. In this flange joint, multiple fixing bolt holes are drilled on the same circumference of both split flanges, and bolts are passed through the holes. The bolt hole is drilled with a diameter somewhat larger than the bolt. For this reason, when a particularly high-pressure object is conveyed under the internal pressure of the pipe, relative displacement occurs between the opposing flanges in the circumferential direction and the radial direction depending on the maximum clearance between the bolt and the bolt hole. The contact pressure between the sealing material and the pipe is extremely strong, reducing the sealing effect.
（従来技術との関連におけるこの考案の課題）
本考案は、複数の固定用ボルト孔の少くとも一
つをセツト用ボルト孔とすることで、即ち、ボル
ト孔を工夫することによつて、シール効果を高め
ようとすることを、その解決すべき課題とする。(Problems with this invention in relation to the prior art) The present invention provides a seal by making at least one of the plurality of fixing bolt holes a setting bolt hole, that is, by devising the bolt hole. The problem to be solved is to increase effectiveness.
構 成
（上記課題解決のために講じた技術的手段）
本考案は、分割フランジの分割線上に穿設した
セツト用ボルト孔にボルトを中間ばめさせ、さら
に、重ね合せ面に座ぐりと突出面とを形成する手
段を基本的に採用する。Configuration (Technical measures taken to solve the above problems) The present invention has a bolt intermediately fitted into a setting bolt hole drilled on the dividing line of the split flange, and furthermore, a counterbore and a protruding surface are provided on the overlapping surface. Basically, we will adopt methods that create the following.
（上記手段の作用）
フランジの分割線上にあるセツト用ボルト孔に
ついては、その製作精度を高め、ボルトとのすき
まを小さくさせたはめあいし、対向するフランジ
間の相対的ずれを最小とさせる。即ち、製作精度
の高い径のセツト用ボルト孔とボルトとの組合せ
が、固定用ボルトとその孔との組合せ部の大きな
はめあい関係による動きを規制し、対向するフラ
ンジの相対的ずれを防止させ得る。(Effects of the above means) As for the setting bolt holes located on the parting line of the flanges, the manufacturing precision is improved, the bolts are fitted with a small clearance, and the relative deviation between the opposing flanges is minimized. In other words, the combination of a setting bolt hole and a bolt with a diameter with high manufacturing accuracy can restrict movement due to the large fitting relationship between the fixing bolt and its hole, and can prevent relative displacement of the opposing flanges. .
さらに、座ぐりと突出面との係合は、分割フラ
ンジの芯合せに有効である。 Furthermore, the engagement between the counterbore and the protruding surface is effective for centering the split flange.
（実施例）
第１図を参照する。接続されようとする管１，
２の端部にフランジ，、４を配す。一方のフラン
ジ３は管１に溶接された環状体であり、他方のフ
ランジ４は分割型のもので、共に、同心上に固定
ボルト５を通す固定用ボルト孔６を複数個穿設さ
せる。これらの孔６の製作精度は低くてよい。即
ち、鋳造したまゞの孔でよく、寸法差の大きい孔
でよい。分割フランジ４は、その内周面に自己密
封作用を有す弾性体７を収める溝８を有し、該弾
性体７は、装着時、管２の外周面および一方のフ
ランジ３の端面に、一定の接触圧の下で密接す
る。分割フランジ４の内周面の一端に半径方向内
方に突出する環状の爪９を設け、該爪９を管２の
溝１０に係合させる。爪９に代えて、分割フラン
ジ４の内周面に溝を設け、管２に対して自己収縮
力で保持されるリングを該溝と係合させることも
できる。分割フランジ４の分割部は、互いに突出
する重合部１１，１２を設け、該重合部１１，１
２を重ね合せた時、フランジ４の本体部と肉厚と
なるようにさせる。(Example) Refer to FIG. 1. Pipe 1 to be connected,
Place a flange, 4 at the end of 2. One flange 3 is an annular body welded to the pipe 1, and the other flange 4 is of a split type, and both have a plurality of concentric fixing bolt holes 6 through which fixing bolts 5 are passed. The manufacturing precision of these holes 6 may be low. In other words, the hole may be as cast, or the hole may have a large size difference. The split flange 4 has a groove 8 on its inner circumferential surface in which an elastic body 7 having a self-sealing effect is housed. Close contact under constant contact pressure. An annular pawl 9 projecting radially inward is provided at one end of the inner peripheral surface of the split flange 4, and the pawl 9 is engaged with a groove 10 of the tube 2. Instead of the claws 9, a groove may be provided on the inner peripheral surface of the split flange 4, and a ring held by self-contracting force against the tube 2 may be engaged with the groove. The divided part of the divided flange 4 is provided with overlapping parts 11 and 12 that protrude from each other, and the overlapping parts 11 and 1
When 2 are stacked on top of each other, the thickness should be the same as that of the main body of the flange 4.
第２図に示すように、両フランジ４，４を共に
分割型としてもよい。この場合、一方のフランジ
４の内周面と管１との間にＯーリング１３を配し
ても良く、他方のフランジ４と同様に弾性体７を
配してもよい。 As shown in FIG. 2, both flanges 4, 4 may be of a split type. In this case, an O-ring 13 may be placed between the inner circumferential surface of one flange 4 and the tube 1, or an elastic body 7 may be placed similarly to the other flange 4.
分割フランジ４の分割部を第３図に示す。一方
の重合部１１の先端は円弧面１４になつており、
他方の重合部１２にはこの円弧面１４と接する円
弧面１５が形成される。さらに、両重合部１１，
１２の他の円弧面１６，１７が互いに面接触可能
とさせるとよい。 The divided portion of the divided flange 4 is shown in FIG. The tip of one overlapping part 11 is an arcuate surface 14,
The other overlapping portion 12 is formed with a circular arc surface 15 that is in contact with this circular arc surface 14 . Furthermore, both polymerization parts 11,
It is preferable that the other twelve arcuate surfaces 16 and 17 are allowed to make surface contact with each other.
重合部１１，１２には、ボルト２１を通す製作
精度の高い径のセツト用ボルト孔１８を穿設す
る。即ち、鋳造した孔を機械切削することで寸法
差を小さくした孔１８とする。このセツト用ボル
ト孔１８は、フランジに穿設される他の固定用ボ
ルト孔６より、その径が小となつている。 In the overlapping parts 11 and 12, a setting bolt hole 18 having a diameter with high manufacturing accuracy is bored through which the bolt 21 is passed. That is, the hole 18 is formed by mechanically cutting the cast hole to reduce the dimensional difference. This setting bolt hole 18 has a smaller diameter than other fixing bolt holes 6 drilled in the flange.
第４図に示すように、少くとも一方の重合部１
１，１２の対接面の一方に座ぐり１９を作り、他
方に該座ぐり１９に収められる突出面２０を形成
し、突出面２０を座ぐり１９に係合させること
で、分割フランジの芯合せを容易にさせる。 As shown in FIG. 4, at least one polymerization part 1
A counterbore 19 is formed on one of the contact surfaces 1 and 12, a protruding surface 20 that is accommodated in the counterbore 19 is formed on the other, and by engaging the protruding surface 20 with the counterbore 19, the center of the split flange is formed. Makes matching easier.
より具体的に例示すれば、使用するセツト並び
に固定用のボルト寸法16+0 -0.25に対し、セツトボ
ルト孔を16.5+0.5 -0、固定用ボルト孔を１９±0.5
とする。 To give a more specific example, the set and fixing bolt dimensions used are 16 +0 -0.25 , and the set bolt hole is 16.5 +0.5 -0 and the fixing bolt hole is 19 ± 0.5.
shall be.
効 果
（本考案によつて生じる特有の効果）
分割フランジの重合部分のセツト用ボルト孔は
他の部分に固定用ボルト孔より寸法差を小として
ある。したがつて、重合部分においてはセツト用
ボルト孔とボルトとの間のすきまは小さくなつて
おり、両フランジが管内圧の作用で相対的にずれ
動くことが少なく、シール材の変形や損傷の発生
が防止される。Effects (Specific effects produced by the present invention) The setting bolt holes in the overlapping part of the split flanges have a smaller dimensional difference than the fixing bolt holes in other parts. Therefore, in the overlapping part, the gap between the bolt hole for setting and the bolt is small, and both flanges are less likely to shift relative to each other due to the action of pipe internal pressure, which reduces the occurrence of deformation or damage to the sealing material. is prevented.
固定用ボルト孔は鋳造のまゝで良いのでフラン
ジの製造が簡単である。 Since the fixing bolt holes can be left as they are in the casting, the flange is easy to manufacture.
第１図および第２図はこの考案の例のフランジ
継手の部分断面図、第３図はフランジの重合部の
斜視図、第４図はヒンジ部の例を示す断面図であ
る。
図中：１，２……管、３，４……フランジ、１
１，１２……重合部、１８……ボルト孔。
1 and 2 are partial cross-sectional views of a flange joint according to an example of this invention, FIG. 3 is a perspective view of an overlapping portion of flanges, and FIG. 4 is a cross-sectional view showing an example of a hinge portion. In the diagram: 1, 2...pipe, 3, 4...flange, 1
1, 12... Overlapping part, 18... Bolt hole.
Claims (1)
せ、該フランジに設けた固定用ボルト孔にボルト
をすきまばめすることで該フランジをボルト止め
するフランジ継手において、少なくとも一方のフ
ランジを分割フランジとし、該分割フランジの分
割部を該分割フランジと同厚となるよう重ね合せ
且つ該分割フランジの分割線上にセツト用ボルト
孔を穿設し、一方の該セツト用ボルト孔にボルト
を中間ばめさせて対向するフランジの位置決めを
なし、さらに、他方のセツト用ボルト孔に座ぐり
と突出面とを形成してなるフランジ継手。 In a flange joint in which flanges provided at the ends of opposing pipes face each other and are bolted together by loosely fitting bolts into fixing bolt holes provided in the flanges, at least one flange is used as a split flange. , overlapping the divided parts of the divided flanges so that they have the same thickness as the divided flanges, and drilling a setting bolt hole on the dividing line of the divided flange, and intermediately fitting a bolt into one of the setting bolt holes. A flange joint in which the opposing flanges are positioned by a bolt hole, and a counterbore and a protruding surface are formed in the other setting bolt hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9849484U JPS6114290U (en) | 1984-07-02 | 1984-07-02 | flange fittings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9849484U JPS6114290U (en) | 1984-07-02 | 1984-07-02 | flange fittings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6114290U JPS6114290U (en) | 1986-01-27 |
| JPH0339665Y2 true JPH0339665Y2 (en) | 1991-08-21 |
Family
ID=30658033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9849484U Granted JPS6114290U (en) | 1984-07-02 | 1984-07-02 | flange fittings |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6114290U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014224577A (en) * | 2013-05-16 | 2014-12-04 | コスモ工機株式会社 | Flange separation prevention device |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100749701B1 (en) | 2005-12-29 | 2007-08-17 | 이선주 | A pipe connectable joint |
| JP6970587B2 (en) * | 2017-11-08 | 2021-11-24 | コスモ工機株式会社 | Flange reinforcement |
| JP7093736B2 (en) * | 2019-02-28 | 2022-06-30 | 株式会社神鋼環境ソリューション | Lid structure and tank with lid |
-
1984
- 1984-07-02 JP JP9849484U patent/JPS6114290U/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014224577A (en) * | 2013-05-16 | 2014-12-04 | コスモ工機株式会社 | Flange separation prevention device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6114290U (en) | 1986-01-27 |
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