JPS5997387A - Connecting fitting for piping - Google Patents
Connecting fitting for pipingInfo
- Publication number
- JPS5997387A JPS5997387A JP57208061A JP20806182A JPS5997387A JP S5997387 A JPS5997387 A JP S5997387A JP 57208061 A JP57208061 A JP 57208061A JP 20806182 A JP20806182 A JP 20806182A JP S5997387 A JPS5997387 A JP S5997387A
- Authority
- JP
- Japan
- Prior art keywords
- diameter cylindrical
- piping
- cylindrical portion
- connecting fitting
- branch pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Landscapes
- Branch Pipes, Bends, And The Like (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は配管用接続金具に関し、特に母管に溶接接続さ
れ、分枝管がねじ込み固定されるに適した鋼管層の接続
金具に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a connecting fitting for piping, and more particularly to a connecting fitting for a steel pipe layer suitable for being welded to a main pipe and to which a branch pipe is screwed and fixed.
防火用スプリンクラ−工事などにおいて一本の母管から
多数の分枝管を分岐せしめる中低圧配管工事において、
従来第１図に示す如く、大径のねじ孔と小径のねじ孔と
を有する通常鋳造品として製造される異径のティース１
を使用し、その大径のねじ孔に母管２を接続し、小径の
ねじ孔に分枝管６を接続していた。この工法は母管２を
分断する必要があるのみでなく多数のねじこみ部が存在
するために著しく作業能率が低下し、洩れのおそれが多
いのみでなく分枝管の方向を維持する点でも問題があっ
た、
本発明はこれら問題点を解決する配管用接続金具を提供
することを目的とする。In medium and low pressure piping work where multiple branch pipes are branched from a single main pipe in fire prevention sprinkler work, etc.
Conventionally, as shown in FIG. 1, teeth 1 of different diameters are usually manufactured as cast products having a large diameter screw hole and a small diameter screw hole.
The main pipe 2 was connected to the large-diameter screw hole, and the branch pipe 6 was connected to the small-diameter screw hole. This construction method not only requires dividing the main pipe 2, but also has many threaded parts, which significantly reduces work efficiency, increases the risk of leakage, and also poses problems in maintaining the direction of the branch pipes. The object of the present invention is to provide a piping fitting that solves these problems.
本発明による配管用接続金具は鋼管層であって、上部内
面には分枝管がねじこみ結合されるねじ部が形成され、
ねじ部の下方には小径の円筒形部分と大径の円筒形部分
とが設けられ、下端は一方向に見たとき円弧状をなし、
下端外周には約４５°の面取部が設けられる。The connecting fitting for piping according to the present invention is a steel pipe layer, and a threaded portion to which a branch pipe is screwed and connected is formed on the upper inner surface,
A small-diameter cylindrical portion and a large-diameter cylindrical portion are provided below the threaded portion, and the lower end has an arc shape when viewed in one direction.
A chamfered portion of approximately 45° is provided on the outer periphery of the lower end.
下端の円弧状形状は取付けられる母管の外径に適合した
ものとする。The arcuate shape of the lower end shall match the outer diameter of the main pipe to which it will be attached.
本発明による接続金具は母管の５所望位置に接続金具の
前述大径の円筒形部分の内径に対応する下孔をあけ、前
述面取部を利用して母管に溶接接続する。その後に分枝
管をねじこみ接続すればよいから作業が著しく容易、か
つ、迅速であり、分枝管も所望の方向に取付けることが
でき、厄介な管の切断、ねじ切り、及び、テープシール
の巻付は作業などを大幅に省略でき、洩れのおそれも少
ない。The connecting fitting according to the present invention has prepared holes corresponding to the inner diameter of the large diameter cylindrical portion of the connecting fitting at five desired positions on the main pipe, and is welded to the main pipe using the chamfered portion. After that, the branch pipes can be connected by screwing them together, making the work extremely easy and quick. The branch pipes can also be installed in the desired direction, eliminating the trouble of cutting, threading, and tape-sealing the pipes. The attachment work can be greatly omitted and there is less risk of leakage.
本発明の実施例を示す添付図面を参照して以下に説明す
る。The invention will now be described with reference to the accompanying drawings, in which embodiments of the invention are shown.
第２図は取付状態を示し母管２に本発明による接続金具
４が溶接され、これに分枝管６が接続される。第６図に
示す如く、接続金具４は、上部内面に分枝管６がねじこ
み固定されるねじ部５を有し、ねじ部５の下方には小径
の円筒形部分ると大径の円筒形部分７とが設けられてい
る。下端面８は第３図において母管２の外径にはｙ一致
する円弧形状をなしている。下端部外層１０には角度ｄ
（第４図）が約４５°、詳細には４０〜４５° 程度の
面取部が設けられ、溶接作業時にビード１１の形成を容
易とする。なお、溶接時に管内面へのビードのはみ出し
を防止するため、下端面９はある程度の接触幅を母管外
面との間に限定するものとすることが望ましい。一実施
例においてこの幅を１、６ｍｍ、−０，８ｍｍとして良
好な成績が得られている。FIG. 2 shows the installed state, and the connecting fitting 4 according to the present invention is welded to the main pipe 2, and the branch pipe 6 is connected to this. As shown in FIG. 6, the connecting fitting 4 has a threaded portion 5 on its upper inner surface into which a branch pipe 6 is screwed and fixed, and below the threaded portion 5 there are a small diameter cylindrical portion and a large diameter cylindrical portion. A portion 7 is provided. The lower end surface 8 has an arcuate shape that coincides with the outer diameter of the main tube 2 in y in FIG. The lower end outer layer 10 has an angle d
(FIG. 4) is provided with a chamfered portion of approximately 45°, more specifically approximately 40 to 45°, to facilitate the formation of the bead 11 during welding work. In order to prevent the bead from protruding into the inner surface of the tube during welding, it is desirable that the lower end surface 9 has a certain contact width limited to the outer surface of the main tube. In one example, good results have been obtained by setting this width to 1.6 mm and -0.8 mm.
本発明による小径の円筒形部分乙の内径Ｆと、大径の円
筒形部分７の内径Ｃと、分枝管６の内径Ｇとの間につぎ
の関係を与えることにより、母管から分校管に分流する
流体の揚程損失を最小とし得ることが判った。By providing the following relationship between the inner diameter F of the small diameter cylindrical portion B, the inner diameter C of the large diameter cylindrical portion 7, and the inner diameter G of the branch pipe 6 according to the present invention, It was found that the head loss of the fluid diverted to can be minimized.
（イ） Ｃ２＝ （１，１〜土８）Ｇ２（ロ）Ｆ２＝（
０，７〜 ０．９’ ） Ｃ２（ハ）Ｆ（Ｃ
さらに、小径円筒形部分乙の最下端位置１２と大径円筒
形部分の下端の最上方位置１６との間の距離りは、大径
円筒形部分の内径ＣＭ対してに）Ｄ＝ （０，１〜０．
２ ） Ｃ
とする。(a) C2= (1,1~Sat8)G2(b)F2=(
0.7 to 0.9') C2(C)F(C Furthermore, the distance between the lowermost position 12 of the small diameter cylindrical part B and the uppermost position 16 of the lower end of the large diameter cylindrical part B is large. (with respect to the inner diameter CM of the cylindrical portion)D=(0,1~0.
2) Set it to C.
このようにすることにより大径の母管から小径の分校管
への分岐流は大径の円筒形部分、小径の譲
円筒形部分により遂次的に絞られて分枝管に入るから抵
抗が小であり、所期の分枝流が得られる。By doing this, the branched flow from the large-diameter main pipe to the small-diameter branch pipe is successively constricted by the large-diameter cylindrical part and the small-diameter yielding cylindrical part and enters the branch pipe, reducing resistance. It is small, and the desired branched flow can be obtained.
なお、接続金具４の全長Ｂは分枝管６を接続するため所
望のねじ部５の長さが得られるように定める。望ましく
はＪＩＳ Ｂ ０２０３管用テーパーねじのめねじの
有効ねじ部の長さの最小値の１．５〜１．８倍とする。Incidentally, the total length B of the connecting fitting 4 is determined so as to obtain a desired length of the threaded portion 5 for connecting the branch pipe 6. Desirably, it is 1.5 to 1.8 times the minimum length of the effective thread portion of the female thread of the JIS B 0203 tapered thread for pipes.
なお、接続金具４０大径の円筒形部分７における肉厚（
第６図ｔ）は耐圧性と軽量化とを考慮し一般配管用鋼管
（スケジュール４０）の肉厚の１０〜１．７倍とする。In addition, the wall thickness (
Figure 6 t) is 10 to 1.7 times the wall thickness of general piping steel pipes (schedule 40) in consideration of pressure resistance and weight reduction.
本発明によれば１本の母管の所定位置に下孔をあけ、本
発明接続金具を溶接して分校管をねじこみ接続するだけ
でよいから工程が著しく簡単であり、母管と接続金具と
の接続作業は地上で行なうことができるので、工期と費
用とを大幅に節約することができる。さらに、下孔の位
置決めが容易であるから、多くの分枝管を設ける場合に
各分枝管を所望の位置、角度に正確に設けることができ
る。また、異径のティースを使用する従来方法と対比し
た場合、漏洩のおそれを最小とすることができる。さら
に、耐圧強度は鋳造の場合に対比して著しく向上され、
軽量であるから配管全体の軽量化が図れる。According to the present invention, the process is extremely simple because it is only necessary to drill a pilot hole at a predetermined position in one main pipe, weld the connecting fitting of the present invention, and connect the branch pipes by screwing. Since the connection work can be done on the ground, construction time and costs can be significantly reduced. Furthermore, since positioning of the prepared hole is easy, when many branch pipes are provided, each branch pipe can be provided accurately at a desired position and angle. Moreover, when compared with the conventional method of using teeth of different diameters, the risk of leakage can be minimized. Furthermore, the compressive strength is significantly improved compared to the case of casting,
Since it is lightweight, the weight of the entire piping can be reduced.
第１図は従来技術による配管の一例を示す概略図、第２
図は本発明接続金具を使用した配管の概略図。第６図は
第４図の線Ｉｌｌ −ＩＩＩに沿う断面図。
第４図は第２図の部分拡大図。
２：母管 ６：分枝管 ４：接続金具５：ねじ部
６：小径円筒形部分
７：大径円筒形部分 １０：面取部
特許出願人 鈴木鉄工株式会社
代理人 弁理士 湯浅恭三：゛−′
１、′１．ニー１
（外４名）Figure 1 is a schematic diagram showing an example of piping according to the prior art;
The figure is a schematic diagram of piping using the connecting fitting of the present invention. FIG. 6 is a sectional view taken along line Ill-III in FIG. 4. Figure 4 is a partially enlarged view of Figure 2. 2: Main pipe 6: Branch pipe 4: Connection fitting 5: Threaded part
6: Small diameter cylindrical portion 7: Large diameter cylindrical portion 10: Chamfered portion Patent applicant Suzuki Iron Works Co., Ltd. agent Patent attorney Kyozo Yuasa:゛-'1,'1. Knee 1 (4 others)
Claims (3)
み結合されるねじ部が設けられ、ねじ部の下方には小径
の円筒形部分と大径の円筒形部分とが設けられ、下端は
一方向に見たとき円弧状をなし、且つ、外周に約４５°
の面取部が設けられていることを特徴とする配管用接続
金具。(1) Manufactured from a steel pipe, the upper inner surface is provided with a threaded part into which the branch pipe is screwed and connected, a small diameter cylindrical part and a large diameter cylindrical part are provided below the threaded part, and the lower end has an arc shape when viewed in one direction, and has an angle of approximately 45° on the outer periphery.
A piping fitting characterized by being provided with a chamfered portion.
部分の内径の二乗値の０．７〜０，９倍であることを特
徴とする特許請求の範囲第１項記載の接続金具。(2) The connection according to claim 1, wherein the square value of the inner diameter of the small diameter cylindrical portion is 0.7 to 0.9 times the square value of the inner diameter of the large diameter cylindrical portion. Metal fittings.
径の二乗値の１．１〜１．８倍であることを特徴とする
特許請求の範囲第１項記載の接続金具。(3) The connecting fitting according to claim 1, wherein the square value of the inner diameter of the large diameter cylindrical portion is 1.1 to 1.8 times the square value of the inner diameter of the branch pipe. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57208061A JPS5997387A (en) | 1982-11-27 | 1982-11-27 | Connecting fitting for piping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57208061A JPS5997387A (en) | 1982-11-27 | 1982-11-27 | Connecting fitting for piping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5997387A true JPS5997387A (en) | 1984-06-05 |
Family
ID=16549989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57208061A Pending JPS5997387A (en) | 1982-11-27 | 1982-11-27 | Connecting fitting for piping |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5997387A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03157592A (en) * | 1989-11-14 | 1991-07-05 | Tokyo Tatsuno Co Ltd | Liquid supplying hose |
| KR200481756Y1 (en) * | 2015-12-18 | 2016-11-07 | 최승준 | Branched pipe assembly |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS561178A (en) * | 1979-04-23 | 1981-01-08 | Fujio Komagome | Device for reproducing and learning record of game of *go* |
-
1982
- 1982-11-27 JP JP57208061A patent/JPS5997387A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS561178A (en) * | 1979-04-23 | 1981-01-08 | Fujio Komagome | Device for reproducing and learning record of game of *go* |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03157592A (en) * | 1989-11-14 | 1991-07-05 | Tokyo Tatsuno Co Ltd | Liquid supplying hose |
| KR200481756Y1 (en) * | 2015-12-18 | 2016-11-07 | 최승준 | Branched pipe assembly |
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