JP3164523B2 - Internal water pressure strength test method for bottomed cylinder - Google Patents
Internal water pressure strength test method for bottomed cylinderInfo
- Publication number
- JP3164523B2 JP3164523B2 JP34809596A JP34809596A JP3164523B2 JP 3164523 B2 JP3164523 B2 JP 3164523B2 JP 34809596 A JP34809596 A JP 34809596A JP 34809596 A JP34809596 A JP 34809596A JP 3164523 B2 JP3164523 B2 JP 3164523B2
- Authority
- JP
- Japan
- Prior art keywords
- water pressure
- bottomed cylinder
- bottomed
- strength test
- sleeve
- 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
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】 本発明は、ナトリウム−硫
黄電池用のβ−アルミナ管等、主としてセラミックスか
ら成る有底円筒体の内水圧加圧強度試験方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for testing the internal water pressure strength of a bottomed cylindrical body mainly made of ceramics, such as a β-alumina tube for a sodium-sulfur battery.
【０００２】[0002]
【従来の技術】 セラミックス等から成る有底円筒体
は、ナトリウム−硫黄電池用のβ−アルミナ管をはじめ
として広範な分野において用いられているが、そのよう
な有底円筒体には、その用途に応じて一定の強度が要求
される。有底円筒体の強度を測定する方法の一つとして
行われているのが、実開平１−９７２４１号公報記載の
内水圧加圧強度試験である。これは、図３に示すよう
に、有底円筒体１の内部に、その開口部より流体を導入
し、その流体に圧力をかけて、所定の圧力に耐えられな
い有底円筒体を破壊することにより行われる。又、有底
円筒体１に直接、流体を導入すると、試験後に有底円筒
体１を乾燥させる必要が生じ試験効率の低下とコストの
増大を招くことから、有底円筒体１の内部と相補的な形
状を有するゴム管１５を有底円筒体１の内部に設置した
状態で流体を導入することも行われている。2. Description of the Related Art Bottomed cylindrical bodies made of ceramics and the like are used in a wide range of fields, such as β-alumina tubes for sodium-sulfur batteries. A certain strength is required according to. One of the methods for measuring the strength of a bottomed cylindrical body is an internal water pressure strength test described in Japanese Utility Model Laid-Open No. 1-97241. In this case, as shown in FIG. 3, a fluid is introduced into the bottomed cylindrical body 1 through its opening, pressure is applied to the fluid, and a bottomed cylindrical body that cannot withstand a predetermined pressure is destroyed. This is done by: In addition, if a fluid is directly introduced into the bottomed cylinder 1, it is necessary to dry the bottomed cylinder 1 after the test, which lowers the test efficiency and increases the cost. A fluid is also introduced in a state where a rubber tube 15 having a typical shape is installed inside the bottomed cylindrical body 1.
【０００３】[0003]
【発明が解決しようとする課題】 しかしながら、従来
の試験方法では、有底円筒体の所望の部分についてのみ
破壊応力を調べたい場合において、その部分の発生応力
が他の部分に比べ小さい場合は、有底円筒体の他の部分
が先に破壊されてしまうため、上記所望の部分の破壊応
力を測定することができないという問題があった。However, in the conventional test method, when it is desired to examine the fracture stress only in a desired portion of the bottomed cylinder, and when the generated stress in that portion is smaller than in other portions, Since the other portion of the bottomed cylinder is destroyed first, there is a problem that the breaking stress of the desired portion cannot be measured.
【０００４】 本発明はかかる状況に鑑みてなされたも
のであり、その目的とするところは、有底円筒体の任意
の部分の破壊応力を自由に測定することができる内水圧
加圧強度試験方法を提供することにある。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a method for testing internal water pressure strength capable of freely measuring a fracture stress of an arbitrary portion of a bottomed cylindrical body. Is to provide.
【０００５】[0005]
【課題を解決するための手段】 即ち、本発明によれ
ば、有底円筒体の内部と相補的な形状を有するゴム管を
有底円筒体の内部に設置した状態で、有底円筒体の開口
部より上記ゴム管の内部に流体を導入し、その流体に圧
力をかけることにより有底円筒体の破壊応力を調べる有
底円筒体の内水圧加圧強度試験方法であって、有底円筒
体の破壊応力を測定すべき部分以外の部分において、上
記ゴム管と有底円筒体の内壁との間に水圧により変形す
ることのないスリーブを介在させる内水圧加圧強度試験
方法が提供される。Means for Solving the Problems According to the present invention, a rubber tube having a shape complementary to the inside of a bottomed cylinder is installed inside the bottomed cylinder, A method for testing the internal water pressure strength of a bottomed cylinder by examining the fracture stress of the bottomed cylinder by introducing a fluid into the rubber tube through an opening and applying pressure to the fluid, comprising: Provided is an internal hydraulic pressure strength test method in which a sleeve that is not deformed by water pressure is interposed between the rubber tube and the inner wall of the bottomed cylindrical body in a portion other than the portion where the fracture stress of the body is to be measured. .
【０００６】[0006]
【発明の実施の形態】 本発明の内水圧加圧強度試験方
法においては、有底円筒体の破壊応力を測定すべき部分
以外の部分において、ゴム管と有底円筒体の内壁との間
に水圧により変形することのないスリーブを介在させた
状態で、ゴム管の内部に流体を導入する。従って、スリ
ーブが有底円筒体の内壁への圧力の伝搬を阻止し、破壊
応力を調べたい部分にのみ水圧がかかり、他の部分には
水圧がかからないため、破壊応力を調べたい部分にのみ
応力が発生し、その部分の破壊応力を測定することが可
能となる。BEST MODE FOR CARRYING OUT THE INVENTION In the internal water pressure strength test method of the present invention, a portion between a rubber pipe and an inner wall of a bottomed cylindrical body is provided at a portion other than a portion where the fracture stress of the bottomed cylinder is to be measured. Fluid is introduced into the rubber tube with a sleeve that is not deformed by water pressure interposed. Therefore, the sleeve prevents the pressure from propagating to the inner wall of the bottomed cylindrical body, and water pressure is applied only to the portion where the fracture stress is to be investigated, and no water pressure is applied to the other portions. Is generated, and it becomes possible to measure the breaking stress of that portion.
【０００７】 例えば、図１（ａ）に示す例において
は、有底円筒体１の筒状部３にスリーブ５を介在させて
いるため、管底部４のみに水圧がかかり、管底部４の破
壊応力を測定することができる。又、図１（ｂ）に示す
例においては、有底円筒体１の筒状部３の上部及び下部
並びに管底部４にスリーブ５を介在させているため、筒
状部３の中間部のみに水圧がかかり、その部分の破壊応
力を測定することができる。For example, in the example shown in FIG. 1A, since the sleeve 5 is interposed in the cylindrical portion 3 of the bottomed cylindrical body 1, water pressure is applied only to the pipe bottom 4, and the pipe bottom 4 is broken. Stress can be measured. In the example shown in FIG. 1B, since the sleeve 5 is interposed between the upper and lower portions of the cylindrical portion 3 of the bottomed cylindrical body 1 and the tube bottom 4, only the intermediate portion of the cylindrical portion 3 is provided. Water pressure is applied, and the fracture stress at that portion can be measured.
【０００８】 ゴム管と有底円筒体との間に介在させる
スリーブの材質は、金属等、水圧により変形を起こさな
いものであれば特に制限はない。[0008] The material of the sleeve interposed between the rubber tube and the bottomed cylindrical body is not particularly limited as long as it is not deformed by water pressure, such as metal.
【０００９】 有底円筒体の内部に導入する流体として
は水、油等が好適に用いられる。As the fluid to be introduced into the bottomed cylinder, water, oil, or the like is preferably used.
【００１０】[0010]
【実施例】 以下、本発明を図示の実施例を用いてさら
に詳しく説明するが、本発明はこれらの実施例に限られ
るものではない。Hereinafter, the present invention will be described in more detail with reference to the illustrated embodiments, but the present invention is not limited to these embodiments.
【００１１】（実施例） 上記の方法を用いてナトリウ
ム−硫黄電池用のβ−アルミナ管とα−リングとの接合
体について内水圧加圧強度試験を行い、β−アルミナ管
の管底部の破壊応力を調べた。β−アルミナ管は、外径
が４７．０ｍｍ、内径が４４．４ｍｍ、内長が４３０ｍ
ｍ、管底肉厚が３ｍｍのものを用い、α−リングをガラ
スにて接合した。(Embodiment) An internal water pressure strength test was performed on a joined body of a β-alumina tube and an α-ring for a sodium-sulfur battery using the above method, and the bottom of the β-alumina tube was broken. The stress was examined. The β-alumina tube has an outer diameter of 47.0 mm, an inner diameter of 44.4 mm, and an inner length of 430 m.
m, the tube bottom thickness was 3 mm, and the α-ring was joined with glass.
【００１２】 内水圧加圧強度試験は以下のように行っ
た。まず、図２に示すように、この接合体１１をゴムリ
ング１２を介してワークホルダー１３に設置した。次
に、β−アルミナ管８の筒状部３から管底部４へ移行す
るくびれの部分に緩衝用ゴムリング６を設置した。次
に、β−アルミナ管８の内部にＳＵＳ製のスリーブ５を
設置し、筒状部３の内壁をスリーブ５にて被覆した。
又、上記スリーブ５の内側にゴム管１５を設置すること
により、β−アルミナ管８の内壁全体をゴム管１５にて
被覆した。スリーブ５及びゴム管１５の上部は、ツール
ホルダー１４に接合した。次に、ツールホルダー１４に
設けた流体通過孔１６より水をゴム管１５の内部に導入
し、増圧機によりゴム管１５内の水圧を連続的に増加
し、β−アルミナ管８が破壊されるまで加圧した。結果
を図４に示す。なお、緩衝用ゴムリング６は、スリーブ
５の端部によってβ−アルミナ管８が損傷するのを防止
するために設置されるものである。[0012] The internal water pressure strength test was performed as follows. First, as shown in FIG. 2, the joined body 11 was set on a work holder 13 via a rubber ring 12. Next, a buffer rubber ring 6 was installed in a constricted portion of the β-alumina tube 8 which transitions from the cylindrical portion 3 to the tube bottom 4. Next, a sleeve 5 made of SUS was installed inside the β-alumina tube 8, and the inner wall of the cylindrical portion 3 was covered with the sleeve 5.
Further, by installing a rubber tube 15 inside the sleeve 5, the entire inner wall of the β-alumina tube 8 was covered with the rubber tube 15. The upper portions of the sleeve 5 and the rubber tube 15 were joined to the tool holder 14. Next, water is introduced into the rubber tube 15 through the fluid passage hole 16 provided in the tool holder 14, and the water pressure in the rubber tube 15 is continuously increased by the pressure intensifier, so that the β-alumina tube 8 is broken. Pressurized. FIG. 4 shows the results. The rubber ring for buffer 6 is provided to prevent the β-alumina tube 8 from being damaged by the end of the sleeve 5.
【００１３】（比較例） β−アルミナ管とゴム管の間
にスリーブを設置せずに、直接ゴム管を設置した以外
は、実施例と同じ条件で、β−アルミナ管とα−リング
との接合体について内水圧加圧強度試験を行った。結果
を図４に示す。Comparative Example A β-alumina tube and an α-ring were used under the same conditions as in the embodiment except that a rubber tube was directly installed without installing a sleeve between the β-alumina tube and the rubber tube. An inner water pressure strength test was performed on the joined body. FIG. 4 shows the results.
【００１４】 比較例においては、１００〜１５０ｋｇ
ｆ／ｃｍ2の水圧で破壊が起こっており、破壊が生じた
部位はβ−アルミナ管の円筒部であった。一方、実施例
においては、１５０〜２００ｋｇｆ／ｃｍ2の水圧で破
壊が起こっており、破壊が生じた部位はβ−アルミナ管
の円筒部と管底部の境界近傍であった。従って、スリー
ブを設置することにより、β−アルミナ管の最弱部以外
の所望の部位の破壊応力を測定できることがわかる。In the comparative example, 100 to 150 kg
Breakage occurred at a water pressure of f / cm 2 , and the site where the breakage occurred was the cylindrical portion of the β-alumina tube. On the other hand, in the examples, breakage occurred at a water pressure of 150 to 200 kgf / cm 2 , and the portion where the breakage occurred was near the boundary between the cylindrical portion and the bottom of the β-alumina tube. Therefore, it can be seen that the installation of the sleeve makes it possible to measure the fracture stress at a desired portion other than the weakest portion of the β-alumina tube.
【００１５】[0015]
【発明の効果】 本発明の内水圧加圧強度試験方法にお
いては、有底円筒体の内壁とゴム管との間にスリーブを
介在させ、有底円筒体の任意の部分にのみ水圧を作用さ
せるため、破壊応力を測定したい部位の強度が他の部分
の強度に比べて大きい場合においても、その部分の破壊
応力を測定することが可能となる。According to the method for testing the strength of pressurized internal water of the present invention, a sleeve is interposed between the inner wall of the bottomed cylinder and the rubber pipe, and water pressure is applied only to an arbitrary portion of the bottomed cylinder. Therefore, even when the strength of the part where the fracture stress is to be measured is higher than the strength of the other part, the fracture stress of that part can be measured.
【図１】 本発明の内水圧加圧強度試験方法におけるス
リーブの設置態様の（ａ）一例及び（ｂ）他の例を示す
断面図である。FIG. 1 is a sectional view showing (a) an example and (b) another example of an installation mode of a sleeve in the internal water pressure strength test method of the present invention.
【図２】 本発明の方法により内水圧加圧強度試験を行
う場合の一態様を示す模式断面図である。FIG. 2 is a schematic cross-sectional view showing one embodiment in a case where an internal hydraulic pressure strength test is performed by the method of the present invention.
【図３】 従来の方法により内水圧加圧強度試験を行う
場合の一態様を示す模式断面図である。FIG. 3 is a schematic cross-sectional view showing one embodiment of a case where an internal water pressure strength test is performed by a conventional method.
【図４】 β−アルミナ管について行った内水圧加圧強
度試験の結果を示すグラフである。FIG. 4 is a graph showing the results of an internal hydraulic pressure strength test performed on β-alumina tubes.
【符号の説明】 １・・・有底円筒体、２・・・保持体、３・・・筒状部、４・・・管
底部、５・・・スリーブ、６・・・緩衝用ゴムリング、７・・・
α−リング、８・・・β−アルミナ管、９・・・ガラス、１１
・・・接合体、１２・・・ゴムリング、１３・・・ワークホルダ
ー、１４・・・ツールホルダー、１５・・・ゴム管、１６・・・
流体通過孔。[Description of Signs] 1 ・ ・ ・ Bottomed cylindrical body, 2 ・ ・ ・ Holder, 3 ・ ・ ・ Cylindrical part, 4 ・ ・ ・ Bottom part, 5 ・ ・ ・ Sleeve, 6 ・ ・ ・ Rubber ring for buffer , 7 ...
α-ring, 8 ... β-alumina tube, 9 ... glass, 11
... Joint body, 12 ... Rubber ring, 13 ... Work holder, 14 ... Tool holder, 15 ... Rubber tube, 16 ...
Fluid passage hole.
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) G01N 3/00 - 3/62 G01M 19/00 ＥＰＡＴ（ＱＵＥＳＴＥＬ) ＪＩＣＳＴファイル（ＪＯＩＳ)────────────────────────────────────────────────── ─── Continued on the front page (58) Fields surveyed (Int. Cl. 7 , DB name) G01N 3/00-3/62 G01M 19/00 EPAT (QUESTEL) JICST file (JOIS)
Claims (1)
るゴム管を有底円筒体の内部に設置した状態で、有底円
筒体の開口部より当該ゴム管の内部に流体を導入し、そ
の流体に圧力をかけることにより有底円筒体の破壊応力
を調べる有底円筒体の内水圧加圧強度試験方法であっ
て、 有底円筒体の破壊応力を測定すべき部分以外の部分にお
いて、当該ゴム管と有底円筒体の内壁との間に水圧によ
り変形することのないスリーブを介在させることを特徴
とする有底円筒体の内水圧加圧強度試験方法。1. A state in which a rubber tube having a shape complementary to the inside of a bottomed cylinder is installed inside the bottomed cylinder, and a fluid is introduced into the rubber tube through an opening of the bottomed cylinder. A method for testing the fracture stress of a bottomed cylinder by applying pressure to the fluid, wherein the inner-water pressure strength test method for the bottomed cylinder is a part other than the part where the fracture stress of the bottomed cylinder is to be measured. 3. The method for testing the pressurized water strength of a bottomed cylindrical body according to claim 1, wherein a sleeve that is not deformed by water pressure is interposed between the rubber tube and the inner wall of the bottomed cylindrical body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34809596A JP3164523B2 (en) | 1996-12-26 | 1996-12-26 | Internal water pressure strength test method for bottomed cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34809596A JP3164523B2 (en) | 1996-12-26 | 1996-12-26 | Internal water pressure strength test method for bottomed cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10185786A JPH10185786A (en) | 1998-07-14 |
| JP3164523B2 true JP3164523B2 (en) | 2001-05-08 |
Family
ID=18394711
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34809596A Expired - Lifetime JP3164523B2 (en) | 1996-12-26 | 1996-12-26 | Internal water pressure strength test method for bottomed cylinder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3164523B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101116029B1 (en) * | 2009-09-10 | 2012-02-22 | 국방과학연구소 | Device and method for tensile test |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100802766B1 (en) | 2006-06-03 | 2008-02-12 | 현대자동차주식회사 | Experimental equipment for strength evaluation of closed and open structures subjected to internal pressure |
| KR101019191B1 (en) | 2008-12-16 | 2011-03-04 | 삼성중공업 주식회사 | Pressure test apparatus and method for corrugated membrane |
| CN102778395B (en) * | 2011-05-13 | 2014-04-02 | 中国石油天然气股份有限公司 | In-service pipeline settlement simulation test method and device |
| KR101673407B1 (en) * | 2015-11-23 | 2016-11-08 | 한국해양과학기술원 | Damage reducing structure for hyperbaric chamber by broken specimen method for pressure test using the same |
| KR102244372B1 (en) * | 2019-12-11 | 2021-04-26 | 부산대학교 산학협력단 | Apparatus and method of asimmetric internal pressure resistant test |
-
1996
- 1996-12-26 JP JP34809596A patent/JP3164523B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101116029B1 (en) * | 2009-09-10 | 2012-02-22 | 국방과학연구소 | Device and method for tensile test |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10185786A (en) | 1998-07-14 |
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