JPS5810629A - Seal external pressure controller for high temperature/high pressure fatigue tester - Google Patents
Seal external pressure controller for high temperature/high pressure fatigue testerInfo
- Publication number
- JPS5810629A JPS5810629A JP10973781A JP10973781A JPS5810629A JP S5810629 A JPS5810629 A JP S5810629A JP 10973781 A JP10973781 A JP 10973781A JP 10973781 A JP10973781 A JP 10973781A JP S5810629 A JPS5810629 A JP S5810629A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- bellows
- compensation
- chamber
- autoclave
- 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.)
- Granted
Links
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
- G01N3/32—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
- G01N2203/0048—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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating 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)
Abstract
Description
【発明の詳細な説明】
本発明は、特殊環境下において材料試験−を行なう高温
高圧疲労試験機のシール外圧制御装置に関する◎
一般に、圧力容器郷の亀裂の原因としては応力腐食割れ
疲労等があるが、この疲労解明は、高温高圧純水の竺境
下における試験片の疲労試験によ請求められる。Detailed Description of the Invention The present invention relates to a seal external pressure control device for a high-temperature, high-pressure fatigue testing machine that conducts material testing under special environments.In general, cracks in pressure vessels are caused by stress corrosion cracking fatigue, etc. However, elucidation of this fatigue requires fatigue testing of specimens under the conditions of high temperature and high pressure pure water.
従来この種の試験機としては、オートクレーブ内に設置
した試験片にプルロッドを介して外部のアクチーエータ
によシ繰返し応力等を加えるようにしたものが一般に知
られておシ、オートクレーブと外部プルロフトとの間の
耐圧シールとしては。Conventionally, this type of testing machine is generally known in which a test piece placed inside an autoclave is subjected to repeated stress by an external actuator via a pull rod. As a pressure seal between.
気密性、耐熱性あるい社摩擦、摩耗等を考慮してベロー
ズ郷の弾性部材が用いられている０そしてこのベローズ
は、その内外圧力を郷しくすることによシばね常数を小
さなものとするととかで龜る。Bellows elastic members are used in consideration of airtightness, heat resistance, friction, abrasion, etc.And this bellows has a small spring constant by increasing the internal and external pressure. It gets cloudy.
ところでこのベローズは、その内部側がオートクレープ
に連通してオートクレーブ内圧力と同圧になつているた
め、ベローズの内外圧力を等しくするにはその外圧をオ
ートクレーブ内圧力に対応させて制御する必要がある。By the way, the inside of this bellows communicates with the autoclave and has the same pressure as the autoclave's internal pressure, so in order to equalize the internal and external pressures of the bellows, it is necessary to control the external pressure in accordance with the autoclave's internal pressure. .
従来、このシール外圧制御装置としては、ベローズの内
外側にそれぞれ圧力検出器を設け、各圧力検出器からの
電気的出力信号によシベローズ外圧を制御するようにし
たものが知られている。Conventionally, as this seal external pressure control device, one is known in which pressure detectors are provided on the inside and outside of a bellows, and the external pressure of the bellows is controlled by electrical output signals from each pressure detector.
しかしながらこの種の装置では、その構造が複雑になシ
コスト高となる等の難点がある〇本発明はかかる従来の
問題点を解決するためになされたもので、その目的とす
るととろけ、装置構成の簡素化を図ることができる高温
高圧疲労試験機のシール外圧制御装置を提供するにある
。However, this type of device has drawbacks such as its complicated structure and high cost.The present invention was made to solve these conventional problems. An object of the present invention is to provide a seal external pressure control device for a high-temperature, high-pressure fatigue testing machine that can be simplified.
本発明は、ベローズが内蔵された液圧室に連通する圧力
補償室内に、オートクレーブに連通する補償ベローズを
設け、かつこの補償ベローズに。The present invention provides a compensation bellows that communicates with an autoclave in a pressure compensation chamber that communicates with a hydraulic pressure chamber in which the bellows is built-in, and a compensation bellows that communicates with an autoclave.
その作動によシボートを切換える制御弁を連結し。Connect the control valve that switches the control valve by its operation.
補償ベローズの内外圧力差に伴なう制御弁の作動により
、前記液圧室への圧力流体の給排制御を行なりようにし
たものである。The supply and discharge of pressure fluid to the hydraulic pressure chamber is controlled by the operation of a control valve in response to the pressure difference between the inside and outside of the compensating bellows.
以下本発明を図示する一実施例に基づいて説明する。The present invention will be described below based on an illustrated embodiment.
図においてｌは試験片であり、この試験片ｌの一端はシ
リンダコおよび液圧室Ｊｔ有する機台≠から立上がる架
台ｊに取付けられているとともに。In the figure, l is a test piece, and one end of this test piece l is attached to a pedestal j rising from a machine stand≠ having a cylinder cylinder and a hydraulic chamber Jt.
他端はシリンダー内を往復動するピストンＢｃプルロッ
ド７ｔ−介して取付けられている。また前記ピストンｔ
はロードセルｔを介してアクチーニータデに連結され、
とのアクチーニータデの作動により試験片ｌに繰返し応
力郷が与えられるようになっている。The other end is attached via a piston Bc pull rod 7t which reciprocates within the cylinder. Also, the piston t
is connected to the actiniata through the load cell t,
By the operation of the actiny knotweed, repeated stress is applied to the test piece l.
前記機台ｌにはまた。試験片Ｉに高温高圧純水環境を与
えるためのオートクレーブＩＯが設置されているととも
に、このオートクレーブ１０への高温高圧純水の導入口
／／およびその排出口／コがそれぞれ設けられている０
また前記液圧室３内には、オートクレーブ１０内圧を受
は耐圧シールするベローズ１３がプルロッド７の周りに
設けられておシ、との液圧室３内、すなわちベローズ１
３の外周部は。Also on the machine I. An autoclave IO is installed to provide a high-temperature, high-pressure pure water environment to the test piece I, and an inlet for high-temperature, high-pressure pure water into the autoclave 10 and an outlet for the high-temperature and high-pressure pure water are provided, respectively.
Further, in the hydraulic pressure chamber 3, a bellows 13 is provided around the pull rod 7 to receive the internal pressure of the autoclave 10 and provide a pressure-resistant seal.
The outer periphery of 3.
導管ｌ弘を介して前記シリンダλ内のピストンぶ下面側
に連通しているｏｌた液圧室３に対応するシリンダコ外
周位置には冷却管／３が配設され、またシリンダー内の
ピストン６周面位置には流体軸受／Ａが形成されるよう
になっている０
図において、／７は前記ベローズ１３の外圧を制御する
ための圧力補償室であり、この圧力補償室１７内には補
償ベローズｌ＃の上端部が固定されている０そして圧力
補償室１７内は、流量調整弁タデを有する導管ｍを介し
て前記導管ｌりに連通しているとともに、補償ベローズ
ＩＩ内は、導管２１を介して前記オートクレーブ１０内
、すなわちベローズ１３の内部側に連通している。A cooling pipe 3 is disposed on the outer periphery of the cylinder corresponding to the hydraulic pressure chamber 3 that communicates with the lower surface of the piston in the cylinder λ via the conduit 1, and In the figure, /7 is a pressure compensation chamber for controlling the external pressure of the bellows 13, and within this pressure compensation chamber 17 is a compensation bellows. The inside of the pressure compensating chamber 17, the upper end of which is fixed, communicates with the conduit m through the conduit m having a flow rate regulating valve, and the inside of the compensating bellows II communicates with the conduit 21. It communicates with the inside of the autoclave 10, that is, the inside of the bellows 13, through the bellows 13.
また圧力補償室１７の下端部には制御弁ｎのシリンダお
上端部が固着され、このシリンダお内を摺動するピスト
ン薯は圧力補償室１７の下面壁を貫通し、その上端部が
補償ベローズ／１の下端部に固定されている０このピス
トン薯には、その作動によυシリンダーにそれぞれ設け
た液圧導入口３および排出０蕩と圧力補償室／７とを連
通・遮断する通孔２７が設けられ、またシリンダ幻のピ
ストン薯下部側には、導管ｕｓ？工び導入口２テヲ介し
て圧力補償室１７内の液圧が導入されるようになってい
るＯ前記液圧導入口２Ｊには、タンク３０内の流体を圧
送するポンプ３１から圧力流体が供給されるようになる
ようになっている０そして前記排出口ッはこの定圧弁３
２の出側に接続されている０な訃ポンプ３１は１図示し
ない導管を介して前記流体軸受／４にも圧力流体を供給
するようになっている０次に作用について説明する０
ベローズ１３の内部側ンよび補償ベローズ／ｌの内部側
はオートクレーブ１０内として連通しておシ。The upper end of the cylinder of the control valve n is fixed to the lower end of the pressure compensation chamber 17, and the piston that slides inside the cylinder penetrates the lower wall of the pressure compensation chamber 17, and its upper end forms a compensation bellows. This piston, which is fixed to the lower end of /1, has a through hole that communicates and shuts off the pressure compensation chamber /7 with the hydraulic pressure inlet 3 and discharge port provided in the cylinder by its operation. 27 is provided, and a conduit US? The hydraulic pressure in the pressure compensating chamber 17 is introduced through the mechanical inlet 2J. Pressure fluid is supplied from the pump 31 that pumps the fluid in the tank 30 to the hydraulic inlet 2J. 0 and the discharge port is connected to this constant pressure valve 3.
The bellows pump 31 connected to the outlet side of the bellows 13 also supplies pressure fluid to the fluid bearing/4 through a conduit (not shown). The inner side of the inner side and the inner side of the compensation bellows/l are communicated with each other as the inside of the autoclave 10.
したがって両ベローズ／３．／ｌにはオートクレーブｉ
ｏの内圧と同一の圧力が加えられる。そしてこの圧力に
よシ補償ベローズ／ｌを伸長し、制御弁−のピストン薯
を下降させる。すると、圧力補償室１７内は通孔２７を
介して液圧導入口ｊと連通し、ポン。Therefore, both bellows/3. Autoclave i for /l
The same pressure as the internal pressure of o is applied. This pressure causes the compensating bellows/liter to extend, and the piston of the control valve to descend. Then, the inside of the pressure compensation chamber 17 is communicated with the hydraulic pressure inlet j via the through hole 27, and the pump is activated.
プ３１からの圧力流体が圧力補償室／７ｓＩＰよび液圧
室３に供給され、またこの圧力流体はピストンＪ下部の
シリンダ力内およびピストン４下１１のシリンダλ内に
も供給される。このため、液圧室３内の圧力とベローｉ
ｔ３の内圧、すなわち圧力補償室／７内の圧力と補償ベ
ローズ／Ｉｔの内圧とが同圧になるに従うて、導入口コ
９からの液圧によってピストンｙは上動する。そして圧
力補償室１７内の圧力と補償ベローズ／ｌの内圧とが同
圧となった際にピストンＪは図示する状態となって圧力
補償室１７側とボる。これにより、ベローズ１３ｆｊ内
外同圧保持が行なわれる◎
なお、オートクレーブ１０の内圧によシ試験片ｌに加わ
る負荷は、シリンダ力に与えられる液圧の同圧反力によ
シ打消され、荷重誤差の発生が有効に防止される。The pressure fluid from the pump 31 is supplied to the pressure compensation chamber/7sIP and the hydraulic pressure chamber 3, and this pressure fluid is also supplied into the cylinder force of the lower part of the piston J and into the cylinder λ of the lower part 11 of the piston 4. For this reason, the pressure inside the hydraulic chamber 3 and the bellow i
As the internal pressure at t3, that is, the pressure in the pressure compensating chamber/7 and the internal pressure of the compensating bellows/It become equal, the piston y is moved upward by the hydraulic pressure from the inlet port 9. When the pressure within the pressure compensation chamber 17 and the internal pressure of the compensation bellows/l become equal to each other, the piston J is in the state shown in the figure and is bent toward the pressure compensation chamber 17. As a result, the same pressure is maintained inside and outside the bellows 13fj.◎ Note that the load applied to the test piece l due to the internal pressure of the autoclave 10 is canceled by the same pressure reaction force of the hydraulic pressure applied to the cylinder force, and the load error occurrence is effectively prevented.
ベローズ／ｊの内圧に対し流体漏れ郷にょ〕液圧室３の
液圧低下が生じると、補償ベローズ／Ｉの内外圧力に差
圧が生じ、これにょシ制御弁−〇ピストンＪが下降する
。すると１通孔コアを介して圧カ補償室ｌフ側とポンプ
３１側とが連通し、液圧室３内に液圧補充がなされる。When the fluid pressure in the hydraulic pressure chamber 3 decreases with respect to the internal pressure of the bellows /J, a pressure difference is created between the internal and external pressures of the compensation bellows /I, which causes the control valve piston J to descend. Then, the pressure compensation chamber 1f side and the pump 31 side communicate through the one-hole core, and the hydraulic pressure chamber 3 is replenished with hydraulic pressure.
一方、液圧室３に対しベローズ１３の内圧低下が生じる
と、導入口２りからの液圧にょル制御弁ｎのピストンＪ
は上動し１通孔コアを介して圧カ補償室ｌフと排出０易
とが連通する◇これにょシ液圧室３内の圧力流体は圧力
補償室ｌフを介してタンク３ｏに排出される。そしてベ
ローズ１３の内外圧が同圧となると、制御弁二のピスト
ン薯が下降して図示する状態となシ、これにょシ圧力補
償室１７側とタンク３０側とが遮断される。On the other hand, when the internal pressure of the bellows 13 decreases with respect to the hydraulic pressure chamber 3, the piston J of the hydraulic pressure control valve n from the inlet 2
moves upward, and the pressure compensation chamber lf communicates with the discharge port through the one-hole core.◇This causes the pressure fluid in the hydraulic pressure chamber 3 to be discharged to the tank 3o via the pressure compensation chamber lf. be done. When the internal and external pressures of the bellows 13 become the same pressure, the piston of the control valve 2 descends to the state shown in the figure, thereby blocking the pressure compensation chamber 17 side and the tank 30 side.
以上説明したように本発明は、液圧室に連通する圧力補
償室内に、オートクレーブに連通する補償ベローズを設
け、かっこの補償ベローズに、その作動によシボートを
切換える制御弁を滓結し。As explained above, in the present invention, a compensation bellows communicating with an autoclave is provided in a pressure compensation chamber communicating with a hydraulic pressure chamber, and a control valve is connected to the compensation bellows of the parenthesis to switch the shift port by the operation of the compensation bellows.
補償ベローズの内外圧力差に伴なう制御弁の作動によシ
、前記液王室への圧力流体の給排制御を行なうようにし
ているガで、電気的手段を用いていた従来装置に比較し
てその構造を大＠に簡素化できる。また補償ベローズも
その内外圧が同圧に制御されるので、ばね定数を小さく
して感度をよくすることができる。This device controls the supply and discharge of pressure fluid to the liquid chamber by operating a control valve in response to the pressure difference between the inside and outside of the compensation bellows, and is superior to conventional devices that use electrical means. The structure can be greatly simplified. Furthermore, since the internal and external pressures of the compensation bellows are controlled to be the same pressure, the spring constant can be reduced to improve sensitivity.
図面は本発明に係るシール外圧制御装置の一実施例を示
す系統図である。
ｌ・・・試験片、コ、コ・・・シリンダ、Ｊ・・・液圧
室。
４、ＪＧ’・・・ピストン、７・・・ブルロブド、り・
・・アクチルエータ、ｌＯ・・・オートクレーブ、１３
・・・ベローズ。
／＊、 ：ｗ、コｌ、ｕ・・・導管、 ／７・・・圧力
補償室、 ｉｔ・・・補償べａ−ズ、ｎ・・・制御弁、
ガ・・・液圧導入口、易・・・排出口、コア・・・通孔
、２９・・・導入口、 ｊ／−°°ポンプ。
出願人代理人 猪 股 清The drawing is a system diagram showing an embodiment of the seal external pressure control device according to the present invention. l...test piece, ko, ko...cylinder, J...hydraulic pressure chamber. 4, JG'... Piston, 7... Bull Robbed, Ri.
...Actylator, lO...Autoclave, 13
...bellows. /*, :w, col, u...conduit, /7...pressure compensation chamber, it...compensation base, n...control valve,
G...hydraulic pressure inlet, easy...discharge port, core...through hole, 29...inlet, j/-°° pump. Applicant's agent Kiyoshi Inomata
Claims (1)
ドと、オートクレーブの内圧負荷を前記試験片から除去
するシリンダ装置と、このシリンダ装置を介して前記プ
ルＯ−１ドに連結されるアクチーエータと、オートクレ
ーブとプルロッドとの間を耐圧シールするベローズと、
前記シリンダ装置に設けられ前記ベローズを内蔵する液
圧室とを具備する高温高圧疲労試験機において、前記液
圧室に連通する圧力補償室内に、前記オートクレーブに
連通する補償ベローズを設け、かつこの補償ベローズに
、その作動によシボートを切換える制御弁を連結し、補
償ベローズの内外圧力差に伴なう制御弁の作動によシ、
前記液圧室への圧力流体の給排を行なうことを特徴とす
る高温高圧疲労試験機のシール外圧制御装置。A pull rod connected to a test piece installed in an autoclave, a cylinder device that removes the internal pressure load of the autoclave from the test piece, an actuator connected to the pull O-1 via this cylinder device, an autoclave and a pull rod. A bellows provides a pressure-resistant seal between the
A high temperature and high pressure fatigue testing machine comprising a hydraulic pressure chamber provided in the cylinder device and containing the bellows, wherein a compensation bellows communicating with the autoclave is provided in a pressure compensation chamber communicating with the hydraulic pressure chamber, and the compensation bellows communicating with the autoclave is provided. A control valve is connected to the bellows, and the control valve is operated according to the pressure difference between the inside and outside of the compensation bellows.
A seal external pressure control device for a high temperature and high pressure fatigue testing machine, characterized in that a pressure fluid is supplied and discharged to the hydraulic pressure chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10973781A JPS5810629A (en) | 1981-07-14 | 1981-07-14 | Seal external pressure controller for high temperature/high pressure fatigue tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10973781A JPS5810629A (en) | 1981-07-14 | 1981-07-14 | Seal external pressure controller for high temperature/high pressure fatigue tester |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5810629A true JPS5810629A (en) | 1983-01-21 |
| JPS6134089B2 JPS6134089B2 (en) | 1986-08-06 |
Family
ID=14517965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10973781A Granted JPS5810629A (en) | 1981-07-14 | 1981-07-14 | Seal external pressure controller for high temperature/high pressure fatigue tester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5810629A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009074821A (en) * | 2007-09-19 | 2009-04-09 | Sumitomo Kinzoku Technol Kk | High pressure material strength testing device and high pressure material strength test method |
| KR100915790B1 (en) * | 2007-11-23 | 2009-09-04 | 한국원자력연구원 | stress - strain measuring apparatus using bellows structure |
| JP2010223869A (en) * | 2009-03-25 | 2010-10-07 | Sumitomo Kinzoku Technol Kk | High pressure material strength testing equipment |
| CN109163895A (en) * | 2018-09-14 | 2019-01-08 | 东莞市先健医疗有限公司 | Fatigue test device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0322762U (en) * | 1989-07-19 | 1991-03-08 | ||
| CN103776710A (en) * | 2014-01-17 | 2014-05-07 | 浙江大学 | Fatigue test device for flexible reaction capsule |
-
1981
- 1981-07-14 JP JP10973781A patent/JPS5810629A/en active Granted
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009074821A (en) * | 2007-09-19 | 2009-04-09 | Sumitomo Kinzoku Technol Kk | High pressure material strength testing device and high pressure material strength test method |
| JP4516589B2 (en) * | 2007-09-19 | 2010-08-04 | 住友金属テクノロジー株式会社 | High pressure material strength test apparatus and high pressure material strength test method |
| KR100915790B1 (en) * | 2007-11-23 | 2009-09-04 | 한국원자력연구원 | stress - strain measuring apparatus using bellows structure |
| JP2010223869A (en) * | 2009-03-25 | 2010-10-07 | Sumitomo Kinzoku Technol Kk | High pressure material strength testing equipment |
| CN109163895A (en) * | 2018-09-14 | 2019-01-08 | 东莞市先健医疗有限公司 | Fatigue test device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6134089B2 (en) | 1986-08-06 |
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