JPH0441771B2 - - Google Patents
Info
- Publication number
- JPH0441771B2 JPH0441771B2 JP1716784A JP1716784A JPH0441771B2 JP H0441771 B2 JPH0441771 B2 JP H0441771B2 JP 1716784 A JP1716784 A JP 1716784A JP 1716784 A JP1716784 A JP 1716784A JP H0441771 B2 JPH0441771 B2 JP H0441771B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- test
- specimen
- test tank
- pressurization
- 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
- 238000012360 testing method Methods 0.000 claims description 64
- 239000012530 fluid Substances 0.000 claims description 4
- 230000003252 repetitive effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000003068 static effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 1
- 230000009189 diving Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明は、繰り返して外圧を受ける容器、機
器等に対して品質・性能の保証又は試作・研究の
ため、繰り返し加圧（耐圧）試験を行う試験装置
の改良に関する。[Detailed Description of the Invention] [Technical Field of the Invention] This invention relates to repeated pressurization (pressure resistance) tests for containers, equipment, etc. that are repeatedly subjected to external pressure, in order to guarantee quality and performance or for prototyping and research. Concerning improvements in testing equipment.
潜水艦艇や深海潜水装置等の部品は潜水する度
に大水圧を受けることになる。また、高圧容器等
の内部にあつて、その高圧を外圧として受けるも
のもある。これらの繰り返して高い外圧を受ける
もののうち、重要なもの、あるいは人命に関する
ものは、その使用の実態に対応して品質を完全に
保証しなければならない。そのため、通常の静的
耐圧試験だけでは不十分であり、繰り返して所定
の外圧を印加して、所定の繰り返し数に対して、
耐圧性・安全性が保証されなければならない。
Parts of submarines, deep-sea diving equipment, etc. are subjected to large water pressure every time they dive. In addition, there are some that are placed inside a high-pressure container or the like and receive the high pressure as external pressure. Among these items that are repeatedly subjected to high external pressure, for items that are important or that involve human life, the quality must be completely guaranteed in accordance with the actual conditions of use. Therefore, a normal static pressure test alone is not sufficient, and by repeatedly applying a predetermined external pressure to a predetermined number of repetitions,
Pressure resistance and safety must be guaranteed.
しかし、内圧を印加して、その容器・機器等の
静的又は動的耐圧性能を試験することは簡単容易
であるが、外圧に対する耐圧性能を試験すること
は静的試験にしても動的試験にしても簡単でな
い。 However, while it is easy to apply internal pressure to test the static or dynamic pressure resistance of containers, equipment, etc., testing the pressure resistance against external pressure is difficult with both static and dynamic tests. However, it is not easy.
第１図に示す装置は、従来実施されている繰り
返し加圧試験装置の説明図である。供試体２に対
して繰り返し加圧試験を行う場合、試験タンク１
内に供試体２を入れてポンプユニツト４で発生さ
せた水圧管系を、運転制御盤５によつてコントロ
ールされる切換弁３によつて、連通・遮断・開放
を繰り返させ、試験タンク１内の水圧の昇圧及び
降圧を繰り返させ、もつて、供試体２に対して外
圧を繰り返して印加するものである。また、加圧
時の圧力検知及び記録用として圧力検知器６が設
けられ、また、水圧を設定値に保持するため、リ
リーフ弁７が設けられている。 The apparatus shown in FIG. 1 is an explanatory diagram of a conventional repeated pressurization test apparatus. When repeatedly performing pressure tests on specimen 2, test tank 1
The test specimen 2 is placed inside the test tank 1, and the hydraulic pipe system generated by the pump unit 4 is repeatedly communicated, shut off, and opened by the switching valve 3 controlled by the operation control panel 5. The water pressure is repeatedly raised and lowered, and then external pressure is repeatedly applied to the specimen 2. Further, a pressure detector 6 is provided for detecting and recording pressure during pressurization, and a relief valve 7 is provided to maintain the water pressure at a set value.
従来の試験装置で、以上のような繰り返し加圧
試験を行うと、供試体２には矢印Ｂの圧力が繰り
返し加圧されて試験の目的を遂行するのである
が、同時に、試験タンク１にも矢印Ａの同一大き
さの圧力が繰り返し加圧されるのは当然である。
したがつて、試験タンク１に繰り返し応力が作用
して、試験タンク１の疲労破壊を早め、試験装置
の使用寿命を短縮させることとなる。
When the above-described repeated pressurization test is performed using a conventional test device, the pressure indicated by arrow B is repeatedly applied to the specimen 2 to achieve the purpose of the test, but at the same time, the pressure in the test tank 1 is also applied. It is natural that the pressure of the same magnitude as indicated by arrow A is applied repeatedly.
Therefore, repeated stress acts on the test tank 1, which accelerates fatigue failure of the test tank 1 and shortens the service life of the test device.
〔発明の目的〕
そこで、この発明は、供試体に対して繰り返し
加圧試験を実施するに際して、試験タンクに対し
ても繰り返し加圧力が印加されること、すなわ
ち、試験タンクにも繰り返し応力が発生すること
を防止して、試験装置の使用寿命を延長するか、
又は、同一の試験装置で試験最高圧力を高くする
ことを可能とすること、すなわち、試験装置の能
力向上を図ることを目的とする。[Purpose of the Invention] Therefore, the present invention aims to solve the problem that when repeatedly carrying out a pressure test on a specimen, pressure is repeatedly applied to the test tank, that is, repeated stress is generated in the test tank as well. Extend the useful life of the test equipment by preventing
Alternatively, the purpose is to make it possible to increase the maximum test pressure using the same test device, that is, to improve the performance of the test device.
この目的を達成するために、この発明は、供試
体と流体とを封入する試験タンクと、加圧装置及
び加圧変動装置とからなる繰り返し加圧試験装置
において、前記試験タンク内の圧力は当該繰り返
し加圧試験装置の最高圧力と同一である一定の設
定圧力に保持させると共に、前記供試体内には当
該繰り返し変動圧力を印加させることを特徴とす
る。
In order to achieve this object, the present invention provides a repetitive pressurization test device consisting of a test tank that encloses a specimen and a fluid, a pressurization device, and a pressurization variation device, in which the pressure in the test tank is It is characterized in that it is maintained at a constant set pressure that is the same as the maximum pressure of the repeated pressurization test device, and that the fluctuating pressure is repeatedly applied inside the specimen.
以下この発明を図示の実施例について詳説す
る。第２図はこの発明の第１実施例、第３図は第
２実施例を示す。第２図について説明すると、供
試体２は水などの試験用流体と共に試験タンク１
内に封入される。試験タンク１内の供試体２を囲
む水には、公知の水圧ポンプ等による加圧装置９
からの水圧が管系９ａ、試験タンク用制御盤８及
び管系８ａを経由して印加される。この水圧は制
御盤８によつて、常に、当該試験の最高圧力と同
一圧力（Po）となるように調整される。
The present invention will be explained in detail below with reference to the illustrated embodiments. FIG. 2 shows a first embodiment of the invention, and FIG. 3 shows a second embodiment. To explain Fig. 2, the specimen 2 is placed in a test tank 1 together with a test fluid such as water.
enclosed within. The water surrounding the specimen 2 in the test tank 1 is supplied with a pressurizing device 9 using a known water pressure pump or the like.
Water pressure is applied via the pipe system 9a, the test tank control panel 8, and the pipe system 8a. This water pressure is always adjusted by the control panel 8 so that it is the same pressure (Po) as the maximum pressure of the test.
一方、供試体２の内部空間にも圧力管系が連設
されている。この圧力管系には、ポンプユニツト
４によつて発生された圧力が、切換弁３を経由し
て印加される。符号５は運転制御盤であり、予め
プログラムされたパターンによつて切換弁３を制
御し、供試体２の内側に印加される圧力（Pi）を
繰り返し変化させる。なお、ポンプユニツト４か
らの圧力は、リリーフ弁７によつて、当該試験に
ついての最高圧力と同一に設定された一定圧力、
すなわち上記圧力（Po）と同一圧力に保持され
る。また、供試体２への加圧管系には圧力検知器
６が設けられており、検知した圧力信号は運転制
御盤５へ送られ、運転制御用データ並びに記録用
データとなる。 On the other hand, a pressure pipe system is also connected to the internal space of the specimen 2. The pressure generated by the pump unit 4 is applied to this pressure pipe system via the switching valve 3. Reference numeral 5 denotes an operation control panel, which controls the switching valve 3 according to a preprogrammed pattern to repeatedly change the pressure (Pi) applied to the inside of the specimen 2. Note that the pressure from the pump unit 4 is a constant pressure set by the relief valve 7 to be the same as the maximum pressure for the test.
That is, the pressure is maintained at the same pressure as the above pressure (Po). Further, a pressure detector 6 is provided in the pressurizing pipe system to the specimen 2, and the detected pressure signal is sent to the operation control panel 5 and becomes data for operation control and recording data.
次に、この装置の作用を説明する。前述のよう
に、試験タンク１内の圧力は、加圧装置９及び制
御盤８によつて、当該試験についての最高圧力と
同一の圧力（Po）となるよう常に保持させる。
供試体２内に印加される圧力（Pi）は、ポンプユ
ニツト４によつて発生させた圧力を、運転制御盤
５によつてコントロールされる切換弁３によつて
切換えさせ、設定されたプログラムに従つて変動
させる。図示した切換弁の位置は「連通」であ
り、設定圧力が供試体に印加されている筈であ
り、それは圧力検知器６で検知される。切換弁の
中央位置は〔閉〕であり、他側の位置は〔開放〕
であり、開放位置では、供試体２内の圧力は放出
される。 Next, the operation of this device will be explained. As mentioned above, the pressure in the test tank 1 is always maintained at the same pressure (Po) as the maximum pressure for the test by the pressurizing device 9 and the control panel 8.
The pressure (Pi) applied inside the specimen 2 is determined by switching the pressure generated by the pump unit 4 by the switching valve 3 controlled by the operation control panel 5 according to the set program. Therefore, it is varied. The illustrated switching valve is in the "communicating" position, and the set pressure should be applied to the specimen, which is detected by the pressure detector 6. The center position of the switching valve is [closed], and the other side position is [open].
In the open position, the pressure within the specimen 2 is released.
前述のように、試験タンク１内には、加圧装置
９及び試験タンク用制御盤によつて、設定された
一定の高い圧力（Po）が加えられている。した
がつて、図示のように、切換弁が〔連通〕となつ
ている時は、供試体２内の圧力（Pi）はポンプユ
ニツト４からの高い設定圧力、すなわち前述のと
おり（Po）なる圧力となつている。 As described above, a predetermined high pressure (Po) is applied to the inside of the test tank 1 by the pressurizing device 9 and the test tank control panel. Therefore, as shown in the figure, when the switching valve is in [communication], the pressure inside the specimen 2 (Pi) is the high set pressure from the pump unit 4, that is, the pressure (Po) as described above. It is becoming.
したがつて、供試体が受ける圧力は、（Po−
Pi）となり、Pi＝Poと設定されているので内外
の圧力がバランスするため、供試体は加圧されて
いないのと全く同様となる。すなわち、無負荷状
態である。 Therefore, the pressure applied to the specimen is (Po−
Pi), and since Pi=Po, the internal and external pressures are balanced, so the specimen is exactly the same as if it were not pressurized. That is, it is in a no-load state.
切換弁３が図の左へ移動し、供試体内の圧力が
放出されると、Pi＝０となり、供試体は外圧
（Po）をもろに受けることとなる。すなわち、加
圧状態である。 When the switching valve 3 moves to the left in the figure and the pressure inside the specimen is released, Pi=0, and the specimen is subjected to the external pressure (Po). That is, it is in a pressurized state.
これを交互に繰り返させることによつて、供試
体２に所定の繰り返し加圧試験を行うことができ
る。 By repeating this alternately, it is possible to perform a predetermined repeated pressurization test on the specimen 2.
なお、供試体２は昇圧・降圧によつて、微量で
はあるが、容積が変化するので、これを調整して
圧力（Po）を一定とするよう加圧装置９及び試
験タンク用制御盤８を作動させなければならな
い。 Note that the volume of the specimen 2 changes due to pressure increase and decrease, although it is a small amount, so the pressurization device 9 and the test tank control panel 8 are adjusted to keep the pressure (Po) constant. must be activated.
なお、この装置によつて繰り返し加圧試験され
る供試体は、密閉容器のみに限らず、円筒状のシ
リンダなどでも開放端に適当な盲栓を設ければ試
験することができる。 The specimen to be subjected to repeated pressurization tests using this apparatus is not limited to a closed container, but can also be tested in a cylindrical cylinder or the like by providing a suitable blind stopper at the open end.
第３図は他の実施例を示し、試験タンク内の圧
力（Po）を発生させる装置（第２図の加圧装置
９及び試験タンク用制御盤８）を省略し、ポンプ
ユニツト４からの管系に分岐管系を設けて試験タ
ンクに連通させ、その圧力を試験タンク１に加え
圧力（Po）としたものである。なおこの圧力
（Po）を検知するため圧力検知器６ａを設け、そ
の信号を運転制御盤に入力し、運転制御用データ
及び記録用データとする。 FIG. 3 shows another embodiment, in which the device for generating pressure (Po) in the test tank (the pressurizing device 9 and the test tank control panel 8 in FIG. 2) is omitted, and the pipe from the pump unit 4 is A branch pipe system is provided in the system to communicate with the test tank, and the pressure is applied to the test tank 1 to make the pressure (Po). A pressure detector 6a is provided to detect this pressure (Po), and its signal is input to the operation control panel and used as operation control data and recording data.
この実施例の作用は第２図について前述したの
と全く同様である。 The operation of this embodiment is exactly the same as described above with respect to FIG.
一般に、構造用材料は、繰り返し荷重に対する
抵抗力、すなわち疲労強度が静的荷重に対する強
度よりかなり低いことが知られており、この発明
はこの周知の自然法則を逆転的発想をもつて利用
したものであり、もつて、試験装置の能力向上を
図つたものである。 Generally, it is known that the resistance to repeated loads, or fatigue strength, of structural materials is considerably lower than the strength to static loads, and this invention takes advantage of this well-known law of nature with a reversal concept. This is an attempt to improve the performance of the test equipment.
なお、外圧（Po）は試験タンクの破裂の際の
危険防止のためもあり、水などの非圧縮性流体を
用いるが、供試体内に加圧する流体は、危険発生
のおそれはないので、空気などの気体を用いても
差しつかえない。 Note that the external pressure (Po) is used to prevent danger in the event of the test tank rupturing, and an incompressible fluid such as water is used. There is no problem in using gases such as
〔発明の効果〕
以上詳細に説明したように、この発明によれ
ば、供試体に対して繰り返し加圧試験を実施する
に際して、試験タンクには、繰り返し加圧ではな
く、一定の静圧力が加えられるので、試験タンク
の繰り返し応力発生による疲労破壊を防止するこ
とができ、試験装置の使用寿命を延長することが
できる。また、同一の試験装置で試験最高圧力を
高くすることが可能となる。すなわち、試験装置
の能力を向上させることができる。[Effects of the Invention] As explained in detail above, according to the present invention, when repeatedly pressurizing a specimen, a constant static pressure is applied to the test tank instead of repeated pressurization. Therefore, fatigue failure due to repeated stress generation in the test tank can be prevented, and the service life of the test equipment can be extended. Furthermore, it becomes possible to increase the maximum test pressure using the same test device. That is, the ability of the test device can be improved.
第１図は従来の繰り返し加圧試験装置の説明
図、第２図はこの発明による繰り返し加圧試験装
置の第１実施例の説明図、第３図は第２実施例の
説明図である。
図において、１は試験タンク、２は供試体、３
は切換弁、４はポンプユニツト、５は運転制御
盤、６及び６ａは圧力検知器、７はリリーフ弁、
８は試験タンク用制御盤、９は加圧装置、Poは
外圧力、Piは内圧力である。
FIG. 1 is an explanatory diagram of a conventional repeated pressurization test apparatus, FIG. 2 is an explanatory diagram of a first embodiment of the repetitive pressurization test apparatus according to the present invention, and FIG. 3 is an explanatory diagram of a second embodiment. In the figure, 1 is the test tank, 2 is the specimen, and 3 is the test tank.
is a switching valve, 4 is a pump unit, 5 is an operation control panel, 6 and 6a are pressure detectors, 7 is a relief valve,
8 is the control panel for the test tank, 9 is the pressurizing device, Po is the external pressure, and Pi is the internal pressure.
Claims (1)
圧装置及び加圧変動装置とからなる繰り返し加圧
試験装置において、前記試験タンク内の圧力は当
該繰り返し加圧試験の最高圧力と同一である一定
の設定圧力に保持させると共に、前記供試体内に
は当該繰り返し変動圧力を印加させることを特徴
とする繰り返し加圧試験装置。1. In a repeated pressurization test device consisting of a test tank that encloses a specimen and a fluid, a pressurization device, and a pressure variation device, the pressure in the test tank is the same as the maximum pressure of the repeated pressurization test. A repetitive pressurization test device characterized by maintaining a constant set pressure and repeatedly applying the fluctuating pressure inside the specimen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1716784A JPS60162932A (en) | 1984-02-03 | 1984-02-03 | Repetitive pressure testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1716784A JPS60162932A (en) | 1984-02-03 | 1984-02-03 | Repetitive pressure testing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60162932A JPS60162932A (en) | 1985-08-24 |
| JPH0441771B2 true JPH0441771B2 (en) | 1992-07-09 |
Family
ID=11936398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1716784A Granted JPS60162932A (en) | 1984-02-03 | 1984-02-03 | Repetitive pressure testing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60162932A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3938584B2 (en) * | 2005-04-08 | 2007-06-27 | 株式会社神戸製鋼所 | Blast treatment container remaining life prediction device, remaining life prediction method, and blast treatment facility |
| JPH074548Y2 (en) * | 1986-07-31 | 1995-02-01 | 株式会社島津製作所 | Material testing machine |
| CN101371126A (en) * | 2006-01-14 | 2009-02-18 | 伊普森国际股份有限公司 | Method for metrologically determining the interval end of an inspection time interval and device for carrying out the method |
| KR100875646B1 (en) | 2007-03-26 | 2008-12-24 | 한양대학교 산학협력단 | Pressure fatigue test apparatus for brazing joint copper pipe and pressure fatigue test method using the same |
| CN104142269B (en) * | 2013-05-07 | 2017-02-08 | 常州进出口工业及消费品安全检测中心 | Packing barrel water pressure tester |
| CN104007031B (en) * | 2014-05-26 | 2017-08-04 | 格力电器（武汉）有限公司 | Volumetric device pulse experimental equipment and control method thereof |
| EP3521800A1 (en) * | 2018-01-31 | 2019-08-07 | Maximator Gmbh | Test apparatus and method for load change testing |
-
1984
- 1984-02-03 JP JP1716784A patent/JPS60162932A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60162932A (en) | 1985-08-24 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |