JPH0746640Y2 - Mounting boss for thin wall pressure vessels - Google Patents
Mounting boss for thin wall pressure vesselsInfo
- Publication number
- JPH0746640Y2 JPH0746640Y2 JP1988149052U JP14905288U JPH0746640Y2 JP H0746640 Y2 JPH0746640 Y2 JP H0746640Y2 JP 1988149052 U JP1988149052 U JP 1988149052U JP 14905288 U JP14905288 U JP 14905288U JP H0746640 Y2 JPH0746640 Y2 JP H0746640Y2
- Authority
- JP
- Japan
- Prior art keywords
- thin
- pressure vessel
- mounting boss
- walled pressure
- mounting
- 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
Landscapes
- Pressure Vessels And Lids Thereof (AREA)
Description
【考案の詳細な説明】 〔産業上の利用分野〕 本考案は特に厳しい軽量化が要求される衛星の姿勢制御
装置（リアクションコントロールシステム:RCS）の燃料
タンク等の薄肉圧力容器の本体の球面部に取付ボスを介
して取付足ないしは他の部品を取付ける薄肉圧力容器の
取付ボスに関する。[Detailed Description of the Invention] [Industrial field of application] The present invention is a spherical portion of the body of a thin-walled pressure vessel such as a fuel tank of a satellite attitude control device (reaction control system: RCS), which requires particularly strict weight reduction. To a mounting boss for a thin-walled pressure vessel in which mounting legs or other parts are mounted via a mounting boss.
薄肉圧力容器の例として従来の球形燃料タンクの外観図
を第２図に、その取付足の取付ボスの軸心に沿った断面
近傍を第３図にそれぞれ示す。これらの図において、11
はタンク本体、12は取付ボス、13は取付ボス12より延設
されてタンク本体１を支える取付足である。なお、14は
ガス入口部、15は液出口部である。FIG. 2 shows an external view of a conventional spherical fuel tank as an example of a thin wall pressure vessel, and FIG. 3 shows the vicinity of a cross section along the axis of the mounting boss of the mounting foot. In these figures, 11
Is a tank body, 12 is a mounting boss, and 13 is a mounting foot that extends from the mounting boss 12 and supports the tank body 1. In addition, 14 is a gas inlet and 15 is a liquid outlet.
取付ボス12はt1の肉厚を有する球形のタンク本体11に重
ねて図示のようにその外周を隅肉溶接されている。16は
その溶接部である。The mounting boss 12 is overlapped on the spherical tank body 11 having a wall thickness of t 1 and the outer periphery thereof is fillet-welded as illustrated. 16 is the weld.
上記従来の球形燃料タンクには解決すべき次の課題があ
った。The conventional spherical fuel tank described above has the following problems to be solved.
即ち、取付ボス12の溶接部は隅肉溶接であるため溶接部
を境にして取付ボス12側はタンク本体11側の約２倍以上
の肉厚となり第３図のl1の範囲に応力集中が働き、最大
応力を生ずる。このためタンク本体11のこの部位の肉厚
t1は最適肉厚にする場合には他の球部より少し厚くして
この最大応力に耐えるようにしなければならず、タンク
本体11の加工が難しい。That is, since the welded portion of the mounting boss 12 is fillet welded, the thickness of the mounting boss 12 side is about twice or more the thickness of the tank body 11 side across the welded portion and stress concentration is within the range of l 1 in FIG. Causes maximum stress. Therefore, the thickness of this part of the tank body 11
When t 1 is set to the optimum thickness, it must be made a little thicker than other spheres so as to withstand this maximum stress, and it is difficult to process the tank body 11.
又、加工を容易にするため、この部位の肉厚に球全体の
肉厚を合わせるようにするとかなりの重量無駄が生じ
る。Further, if the wall thickness of the entire sphere is made to match the wall thickness of this portion in order to facilitate processing, a considerable weight loss occurs.
本考案はこの問題を解決した燃料タンクないしは薄肉圧
力容器を提供することを目的とする。An object of the present invention is to provide a fuel tank or a thin wall pressure vessel that solves this problem.
本考案は上記課題の解決手段として、ほぼ球形をなす薄
肉圧力容器本体に取付ボスを溶接し同取付ボスに取付足
その他の部材を取付けた薄肉圧力容器の取付ボスにおい
て、薄肉圧力容器本体に溶接される外周端縁が薄肉圧力
容器本体よりやや厚肉をなすと共にその外周端縁よりわ
ずか内周がボス中心に向って所要の範囲にわたり薄肉圧
力容器本体の肉厚とほぼ同厚に形成された取付ボスがそ
の外周の径に相応して切欠かれた薄肉圧力容器本体の切
欠きに埋設されると共に取付ボスの外周と薄肉圧力容器
本体とが突き合わせ溶接されてなることを特徴とする薄
肉圧力容器の取付ボスを提供しようとするものである。Means for Solving the Problems The present invention is, as a means for solving the above-mentioned problems, by welding a mounting boss to a substantially spherical thin-walled pressure vessel main body, and by mounting a mounting foot and other members to the mounting boss, a thin-walled pressure vessel main body is welded to the thin-walled pressure vessel main body. The outer peripheral edge is slightly thicker than the thin-walled pressure vessel main body, and the inner peripheral edge is formed to be approximately the same thickness as the thin-walled pressure vessel main body over the required range toward the center of the boss. The thin wall pressure is characterized in that the mounting boss is embedded in the notch of the thin pressure vessel main body cut out corresponding to the diameter of the outer periphery thereof, and the outer periphery of the mounting boss and the thin wall pressure vessel main body are butt welded. It is intended to provide a mounting boss for the container.
本考案は上記のように構成されるので次の作用を有す
る。即ち、取付ボスの外周を、薄肉圧力容器本体を切欠
いた部位に埋設して突き合わせ溶接とするので、薄肉圧
力容器本体と取付ボスの外周とがほぼ面一となり、取付
ボスが薄肉圧力容器本体の一部を構成することとなって
溶接部位近傍に大きな肉厚差が生じない。従って従来の
ように肉厚の急変する溶接部位近傍に応力集中を生じる
という不具合が解消する。Since the present invention is constructed as described above, it has the following effects. That is, since the outer periphery of the mounting boss is embedded in the notched portion of the thin-walled pressure vessel body and butt-welded, the thin-walled pressure vessel body and the outer periphery of the mounting boss are substantially flush with each other, and the mounting boss is Since it constitutes a part, a large difference in wall thickness does not occur near the welded portion. Therefore, the problem that stress concentration occurs in the vicinity of the welded portion where the wall thickness changes rapidly is eliminated.
本考案の一実施例を第１図により説明する。なお、図示
以外は第２図と同様である。An embodiment of the present invention will be described with reference to FIG. It should be noted that, except for the illustration, it is similar to FIG.
図において、１は肉厚t3のタンク本体、２は取付ボスで
ある。取付ボス２は図示のようにタンク本体１に予め設
けた直径d2の切欠き内に収められ、その外周を溶接部６
でタンク本体１と接合されている。溶接部６は溶接効率
で若干強度が低下することを考慮して厚くしてある。In the figure, 1 is a tank body having a wall thickness of t 3 , and 2 is a mounting boss. The mounting boss 2 is housed in a notch having a diameter d 2 previously provided in the tank body 1 as shown in the drawing, and the outer periphery thereof is welded to the welded portion 6.
Is joined to the tank body 1. The welded portion 6 is made thick in consideration of a slight decrease in strength due to welding efficiency.
又、溶接部６の直径d2は従来例の直径d1に比べて大きく
し、溶接部６の単位周長当りの応力の低下を図ってあ
る。In addition, the diameter d 2 of the welded portion 6 is made larger than the diameter d 1 of the conventional example to reduce the stress per unit length of the welded portion 6.
又、取付ボス２にタンク本体１の肉厚t3とほぼ同じ肉厚
のt4部を図のl2部に設け、この部位に最大応力が働くよ
うに構成してある。Further, the mounting boss 2 is provided with a portion t 4 having a thickness substantially the same as the thickness t 3 of the tank body 1 at a portion l 2 in the drawing, so that the maximum stress acts on this portion.
溶接部６は突き合わせの上開先溶接とし、溶接部６の肉
厚は上記の通り、溶接効率を考慮して意識的にt3,t4よ
り厚くしてある。この溶接部６の厚みにより取付足13に
掛かる力（集中応力）は溶接部６の手前l2に発生する。
これにより溶接部６には最大応力が発生せず、安全でか
つ軽量なタンクが得られる。The welded portion 6 is a butt welded upper groove, and the wall thickness of the welded portion 6 is intentionally made thicker than t 3 and t 4 in consideration of welding efficiency as described above. This takes the force (stress concentration) to the mounting leg 13 by the thickness of the weld 6 will occur before l 2 of the welded portion 6.
As a result, maximum stress does not occur in the welded portion 6, and a safe and lightweight tank can be obtained.
以上、実施例では取付ボス２とタンク本体１との突き合
わせ溶接部を開先溶接としたが開先溶接に限定されるも
のではなく、うらなみ溶接その他の合目的な溶接が選択
されてよい。As described above, in the embodiment, the butt-welded portion between the mounting boss 2 and the tank body 1 is groove welding, but the invention is not limited to groove welding, and eddy welding or other purposeful welding may be selected.
又、実施例は取付ボスに取付足を延設する例で説明した
が取付く部材は取付足に限らず、他の部材であっても勿
論よい。Further, although the embodiment has been described with the example in which the mounting foot is extended to the mounting boss, the mounting member is not limited to the mounting foot, and other members may be used.
本考案は上記のように構成されるので次の効果を有す
る。Since the present invention is configured as described above, it has the following effects.
（１）重量無駄のない取付ボスを含む薄肉圧力容器が得
られるのでグラムオーダーで厳しく重量管理が行なわれ
る衛星用として非常に有効である。(1) Since a thin pressure vessel including a mounting boss that does not waste weight can be obtained, it is very effective for satellites in which weight control is strictly performed on the gram order.
（２）取付ボスが薄肉圧力容器壁の一部となるので、軽
量化が果たされる。(2) Since the mounting boss becomes a part of the thin wall of the pressure vessel, the weight is reduced.
（３）溶接部の薄肉圧力容器側の肉厚を隣接する取付ボ
ス側よりやや厚くすることにより最大応力を取付ボス側
に生じさせることが可能なので薄肉圧力容器本体又は溶
接部に集中応力が発生せず、薄肉圧力容器本体強度はそ
の内圧のみを考慮すればよく、資材節減及び製作容易化
が達成される。(3) Since the maximum stress can be generated on the mounting boss side by making the thickness of the welded portion on the thin pressure vessel side slightly thicker than the adjacent mounting boss side, concentrated stress occurs on the thin walled pressure vessel main body or the welded portion. Instead, the strength of the thin-walled pressure vessel main body only needs to consider the internal pressure of the main body, and material saving and easy manufacturing can be achieved.
第１図は本考案の一実施例に係る取付ボスの軸心に沿っ
た近傍の断面図、第２図は従来の球形燃料タンクの外観
図、第３図は第２図の取付ボスを第１図に対応して示し
た断面図である。 １……タンク本体、２……取付ボス。FIG. 1 is a cross-sectional view of the vicinity of an axis of a mounting boss according to an embodiment of the present invention, FIG. 2 is an external view of a conventional spherical fuel tank, and FIG. 3 shows the mounting boss of FIG. It is sectional drawing shown corresponding to FIG. 1 ... Tank body, 2 ... Mounting boss.
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭54−147517（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-54-147517 (JP, A)
Claims (1)
スを溶接し同取付ボスに取付足その他の部材を取付けた
薄肉圧力容器の取付ボスにおいて、薄肉圧力容器本体に
溶接される外周端縁が薄肉圧力容器本体よりやや厚肉を
なすと共にその外周端縁よりわずか内周がボス中心に向
って所要の範囲にわたり薄肉圧力容器本体の肉厚とほぼ
同厚に形成された取付ボスがその外周の径に相応して切
欠かれた薄肉圧力容器本体の切欠きに埋設されると共に
取付ボスの外周と薄肉圧力容器本体とが突き合わせ溶接
されてなることを特徴とする薄肉圧力容器の取付ボス。1. A mounting boss of a thin-walled pressure vessel in which a mounting boss is welded to a substantially spherical thin-walled pressure vessel main body and mounting legs and other members are mounted on the mounting boss, and an outer peripheral edge welded to the thin-walled pressure vessel main body. Is slightly thicker than the thin-walled pressure vessel body, and the mounting boss is formed so that the inner circumference of the outer edge is slightly the same as the thickness of the thin-walled pressure vessel body over the required range toward the boss center. A boss for mounting a thin-walled pressure vessel, which is embedded in a notch of a thin-walled pressure vessel main body cut out in accordance with the diameter of and is formed by butt welding the outer periphery of the mounting boss and the thin-walled pressure vessel main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988149052U JPH0746640Y2 (en) | 1988-11-17 | 1988-11-17 | Mounting boss for thin wall pressure vessels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988149052U JPH0746640Y2 (en) | 1988-11-17 | 1988-11-17 | Mounting boss for thin wall pressure vessels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0269599U JPH0269599U (en) | 1990-05-25 |
| JPH0746640Y2 true JPH0746640Y2 (en) | 1995-10-25 |
Family
ID=31420929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988149052U Expired - Lifetime JPH0746640Y2 (en) | 1988-11-17 | 1988-11-17 | Mounting boss for thin wall pressure vessels |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0746640Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4216881A (en) * | 1978-05-10 | 1980-08-12 | Rockwell International Corporation | Propellant storage expulsion system |
-
1988
- 1988-11-17 JP JP1988149052U patent/JPH0746640Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0269599U (en) | 1990-05-25 |
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