JP2824827B2 - Pressure test method and equipment for pressure vessels - Google Patents
Pressure test method and equipment for pressure vesselsInfo
- Publication number
- JP2824827B2 JP2824827B2 JP6284517A JP28451794A JP2824827B2 JP 2824827 B2 JP2824827 B2 JP 2824827B2 JP 6284517 A JP6284517 A JP 6284517A JP 28451794 A JP28451794 A JP 28451794A JP 2824827 B2 JP2824827 B2 JP 2824827B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- liquid
- test
- test sample
- pressurizing
- 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 - Fee Related
Links
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ＰＥＴボトル、自動車
用インテークマニホールド等の部品、チューブ、パイプ
（ピンチオフ部を有するパイプ類を含む）、缶、袋等の
圧力容器等の耐圧試験方法とその装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure test method for parts such as PET bottles, intake manifolds for automobiles, tubes, pipes (including pipes having pinch-off parts), pressure vessels such as cans and bags, and the like. Related to the device.
【０００２】[0002]
【従来の技術】従来の技術は、ＰＥＴボトル等の圧力容
器内に定量式の水圧ポンプにより水圧を加え、破壊時の
圧力を検出するものであった。2. Description of the Related Art In the prior art, water pressure was applied to a pressure vessel such as a PET bottle by a quantitative hydraulic pump to detect the pressure at the time of breakage.
【０００３】[0003]
【発明が解決しようとする課題】ＰＥＴボトル等の圧力
容器等の耐圧試験においては、容器への加圧条件は同一
でなければならないから、容器内に加えられる加圧力は
一定の割合でリニアに変化するのが好ましいが、従来の
技術の耐圧試験では、ＰＥＴボトル等の圧力容器内に一
定量の水を送るものであるから、昇圧をリニアにできな
いのみならず、容器の容積が変化したり、クリープが生
じたりすることによって容器内の圧力は影響され変化し
て、一定の割合で昇圧することができない問題があっ
た。In a pressure test of a pressure vessel such as a PET bottle, the conditions for pressurizing the vessel must be the same, so that the pressure applied to the vessel is linear at a constant rate. It is preferable to change the pressure, but in the conventional pressure test, since a fixed amount of water is sent into a pressure vessel such as a PET bottle, not only the pressure cannot be linearly increased, but also the volume of the vessel changes. In addition, there is a problem that the pressure in the container is affected and changes due to the occurrence of creep and the pressure cannot be increased at a constant rate.
【０００４】[0004]
【課題を解決するための手段】そこで、本発明は、試験
槽内に収容液を収容し、該収容液内に加圧用液を収容す
る圧力容器等の試験サンプルを没入し、該試験サンプル
内の加圧用液を加圧装置により経時的に昇圧させ、且
つ、昇圧状態を経時的に検出するようにした圧力容器等
の耐圧試験方法であって、試験サンプル内の液を昇圧さ
せる加圧装置を試験槽の収容液の液位より低い位置に設
置し、試験サンプルと加圧装置を連結する加圧用連結管
体内にサイホン式に収容液を満たし、試験槽内に没入し
た試験サンプルと加圧装置を該加圧用連結管体で液密に
連結することを特徴とする圧力容器等の耐圧試験方法を
提供しようとするものである。また、本発明は、収容液
及び加圧用液を水又は水溶液で構成したことを特徴とす
る圧力容器等の耐圧試験方法を提供するものである。SUMMARY OF THE INVENTION Accordingly, the present invention provides a method for storing a storage solution in a test tank, and immersing a test sample such as a pressure vessel storing a pressurizing solution in the storage solution. pressurizing fluid over time is boosted by the pressurizing device, and, a step-up state to a withstand voltage test method of the pressure vessel or the like so as to detected over time, boosting of the liquid in the test sample
Pressure device at a position lower than the liquid level in the test tank.
Connecting pipe for connecting the test sample to the pressurizing device
Fill the body with the liquid siphonically and immerse it in the test tank.
The test sample and the pressurizing device in a liquid-tight manner with the connecting tube for pressurization.
An object of the present invention is to provide a pressure test method for a pressure vessel or the like characterized by being connected . Further, the present invention provides a method for testing the pressure resistance of a pressure vessel or the like, wherein the containing liquid and the pressurizing liquid are composed of water or an aqueous solution.
【０００５】また、本発明は、所定温度の収容液を収容
し圧力容器等の試験サンプルを没入する試験槽と、試験
サンプル内の加圧用液を昇圧させる加圧装置と、試験サ
ンプルと加圧装置を連結する加圧用連結管体と、加圧圧
力を経時的に検出する圧力センサと、圧力センサに接続
し加圧状態を表示し記録する表示部と、圧力センサに接
続し加圧装置の加圧状態をコントロールするコントロー
ル部とからなり、加圧装置を、圧力タンク内を弾性隔膜
で一方を高圧空気源に接続する空気室、他方を試験サン
プル内の加圧用液に接続する液室に分割し空気圧を液圧
に変換するトランスファーバリア型アキュームレータで
構成したことを特徴とする圧力容器等の耐圧試験装置を
提供しようとするものである。[0005] The present invention also provides a test tank for containing a liquid at a predetermined temperature and immersing a test sample such as a pressure vessel, a pressurizing device for pressurizing a pressurizing liquid in the test sample, A connecting tube for pressurizing the device, a pressure sensor for detecting the pressurizing pressure over time, a display unit connected to the pressure sensor to display and record the pressurized state, and a pressurizing device connected to the pressure sensor. consists of a control unit for controlling the pressurized state, the pressure device, the elastic septum within the pressure tank
One is connected to the high-pressure air source in the air chamber and the other is
Divide into a liquid chamber connected to the pressurized liquid in the pull and
Transfer barrier type accumulator
It is an object of the present invention to provide a pressure test apparatus for a pressure vessel or the like characterized by having the above-mentioned configuration .
【０００６】また、本発明は、前記装置において、トラ
ンスファーバリア型アキュームレータの空気室と高圧空
気源とを、電源からの電圧に比例して空気圧を制御する
電空比例弁を介して連結し、加圧装置の加圧状態をコン
トロールすることを特徴とする圧力容器等の耐圧試験装
置を提供するものである。また、本発明は、前記装置に
おいて、電源と電空比例弁との間に、前記アキュームレ
ータの空気圧を検出した検出圧力信号に基づいて前記電
源からの電圧を制御して電空比例弁に供給するコントロ
ール部を設けたことを特徴とする圧力容器等の耐圧試験
装置を提供するものである。Further, according to the present invention, in the above apparatus, the air chamber of the transfer barrier type accumulator and the high pressure air source are connected via an electropneumatic proportional valve for controlling the air pressure in proportion to the voltage from the power supply. An object of the present invention is to provide a pressure test apparatus for a pressure vessel or the like characterized by controlling a pressurized state of a pressure device. Further, the present invention, in the device, between the power supply and the electropneumatic proportional valve, controls the voltage from the power supply based on a detected pressure signal that detects the air pressure of the accumulator, and supplies the voltage to the electropneumatic proportional valve. An object of the present invention is to provide a pressure-resistant test device such as a pressure vessel provided with a control unit.
【０００７】[0007]
【作用】上記の構成からなる本発明の圧力容器等の耐圧
試験方法によれば、試験槽内に収容液を収容し、該収容
液内に加圧用液を収容する圧力容器等の試験サンプルを
没入し、該試験サンプル内の加圧用液を加圧装置により
経時的に昇圧させ、且つ、昇圧状態を経時的に検出する
ことができるから、破壊に至る途中の加圧力の変化を検
出することができ、それにより、試験条件に従って試験
サンプル内の圧力を一定の割合でリニアに変化させるこ
とができる。According to the pressure test method for a pressure vessel or the like of the present invention having the above-described structure, a test sample such as a pressure vessel or the like in which a test solution is stored in a test tank and a pressurizing solution is stored in the test solution. It is immersed, and the pressurizing liquid in the test sample is pressurized over time by a pressurizing device, and the pressurized state can be detected over time. Thus, the pressure in the test sample can be changed linearly at a constant rate according to the test conditions.
【０００８】また、本発明は、前記試験方法において、
収容液及び加圧用液を水又は水溶液で構成することによ
り、収容液及び加圧用液の管理や温度コントロールを容
易にでき、容易に試験槽を所定温度の恒温槽とすること
ができる。また、本発明は、上記の試験方法において、
試験サンプル内の液を昇圧させる加圧装置を試験槽の収
容液の液位より低い位置に設置し、試験サンプルと加圧
装置を連結する加圧用連結管体内にサイホン式に収容液
を満たし、試験槽内に没入した試験サンプルと加圧装置
を該加圧用連結管体で液密に連結することができるか
ら、加圧用液に空気が流入するのを容易に防止すること
ができる。[0008] The present invention also provides the test method, wherein:
By configuring the storage liquid and the pressurization liquid with water or an aqueous solution, the management of the storage liquid and the pressurization liquid and the temperature control can be facilitated, and the test tank can be easily a constant temperature bath at a predetermined temperature. Further, the present invention provides the above-mentioned test method,
A pressurizing device that pressurizes the liquid in the test sample is installed at a position lower than the liquid level of the liquid stored in the test tank, and the pressurized connecting pipe that connects the test sample and the pressurizing device is filled with the liquid stored in a siphon manner, Since the test sample immersed in the test tank and the pressurizing device can be connected in a liquid-tight manner by the pressurizing connecting tube, it is possible to easily prevent air from flowing into the pressurizing liquid.
【０００９】また、本発明に係る圧力容器等の耐圧試験
装置によれば、圧力容器等の試験サンプルを没入する試
験槽に所定温度の収容液を収容し、試験サンプル内の加
圧用液を昇圧させる加圧装置と試験サンプルとを加圧用
連結管体で連結して加圧し、加圧圧力を圧力センサによ
り経時的に検出し、圧力センサに接続した表示部に加圧
状態を表示し記録し、且つ圧力センサに接続したコント
ロール部により試験サンプル内の加圧用液を加圧時間に
比例して昇圧させるようにコントロールすると、途中で
容器が変形したり、クリープを起こしたとしても、容器
が破壊するまで所定の比率でリニアに昇圧することがで
きる。Further, according to the pressure-resistant test apparatus for a pressure vessel or the like according to the present invention, a storage solution at a predetermined temperature is accommodated in a test tank in which a test sample such as a pressure vessel is immersed, and a pressurizing liquid in the test sample is pressurized. The pressurizing device and the test sample are connected by a pressurizing connection pipe and pressurized. The pressurized pressure is detected over time by a pressure sensor, and the pressurized state is displayed and recorded on a display connected to the pressure sensor. If the control unit connected to the pressure sensor is controlled to increase the pressure of the pressurizing liquid in the test sample in proportion to the pressurizing time, the container will break even if it deforms or creeps in the middle. The voltage can be boosted linearly at a predetermined ratio until the voltage rises.
【００１０】また、本発明は、前記の耐圧試験装置にお
いて、加圧装置を、圧力タンク内を弾性隔膜で一方を高
圧空気源に接続する空気室、他方を試験サンプル内の加
圧用液に接続する液室に分割し空気圧を液圧に変換する
トランスファーバリア型アキュームレータで構成したこ
とにより、圧縮率が大きく圧力変化の調整幅を大きくと
れ、微調整可能な空気圧をそのまま液圧に変換して試験
サンプルを加圧することができると共に、隔膜により空
気と液体を完全に分離することができるから、高圧空気
側の圧力センサ等への水の侵入や、ボトル等の試験サン
プル内への空気の回り込みが阻止できることとなる。Further, in the present invention, in the above-mentioned pressure test apparatus, the pressurizing device is connected to a pressurizing liquid in a test sample by connecting one side to a high-pressure air source with an elastic diaphragm in the pressure tank and the other to the pressurizing liquid in the test sample. The transfer barrier type accumulator that converts air pressure into liquid pressure by dividing it into liquid chambers to be compressed has a large compression ratio and a wide adjustment range of pressure change, and converts finely adjustable air pressure to liquid pressure as it is and tests Since the sample can be pressurized and the air and the liquid can be completely separated by the diaphragm, the intrusion of water into the pressure sensor on the high-pressure air side and the wraparound of the air into the test sample such as a bottle can be prevented. It can be blocked.
【００１１】また、本発明は、前記装置において、トラ
ンスファーバリア型アキュームレータの空気室と高圧空
気源とを、電源からの電圧に比例して空気圧を制御する
電空比例弁を介して連結した構成を有するから、例え
ば、電圧０で、圧力０（大気圧に解放）、電圧５で、圧
力５ｋｇ／ｃｍ2 のように容易、且つ正確に加圧装置の
加圧状態をコントロールすることができる。また、本発
明は、前記装置において、電源と電空比例弁との間に、
前記アキュームレータの空気圧を検出した検出圧力信号
に基づいて前記電源からの電圧を制御して電空比例弁に
供給するコントロール部を設けた構成を有するから、圧
縮容器等の試験サンプルの強弱、容量の大小等に対応し
て、電源からの電圧を制御して電空比例弁に供給するこ
とにより、例えば、圧力をかけるとクリープを起こしや
すいボトル等の試験サンプルについても、その分も考慮
した制御を行うことができる。The present invention also relates to the above apparatus, wherein the air chamber of the transfer barrier type accumulator and the high pressure air source are connected via an electropneumatic proportional valve for controlling the air pressure in proportion to the voltage from the power supply. Therefore, the pressurized state of the pressurizing device can be easily and accurately controlled, for example, at a voltage of 0, a pressure of 0 (released to atmospheric pressure), and at a voltage of 5, at a pressure of 5 kg / cm 2 . Further, the present invention, in the device, between the power supply and the electropneumatic proportional valve,
Since the control unit that controls the voltage from the power supply based on the detected pressure signal that detects the air pressure of the accumulator and supplies the voltage to the electro-pneumatic proportional valve is provided, the strength of the test sample such as the compression container, the capacity By controlling the voltage from the power supply and supplying it to the electro-pneumatic proportional valve in accordance with the magnitude, etc., for example, even for test samples such as bottles that are likely to creep when pressure is applied, control taking into account that amount is also taken into account. It can be carried out.
【００１２】[0012]
【実施例】以下図示する実施例により本発明を詳細に説
明すると、図において、１は内部に所定温度に調温した
収容液２を収容する恒温性の試験槽で、収容液内に没入
したボトル等の試験サンプル３の温度を一定に制御する
ものである。試験槽１には、ボトル等の試験サンプル３
の破壊時に収容液２が周囲に飛び散らないように蓋体４
が取り付けられるようになっていると共に、該蓋体４又
は試験槽１には耐圧試験中のボトル等の試験サンプル３
の様子を観察するための窓が設けてある。収容液２とし
ては、試験サンプル３の温度を、例えば、５〜８０℃の
幅で調整できるように、コントロールのしやすさから水
を使用するのが最適で好ましい。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the illustrated embodiment. In the drawings, reference numeral 1 denotes a thermostatic test tank which contains a storage liquid 2 whose temperature has been adjusted to a predetermined temperature, and which is immersed in the storage liquid. The temperature of the test sample 3 such as a bottle is controlled to be constant. In the test tank 1, a test sample 3 such as a bottle is placed.
Cover 4 so that the liquid 2 does not splash around when the
The lid 4 or the test tank 1 has a test sample 3 such as a bottle under pressure test.
There is a window for observing the situation. It is most preferable to use water as the storage liquid 2 so that the temperature of the test sample 3 can be adjusted in a range of, for example, 5 to 80 ° C. from the viewpoint of easy control.
【００１３】５は、試験サンプル３内に入れた加圧用液
を加圧する加圧装置を構成するトランスファーバリア型
アキュームレータで、金属製等からなる圧力タンク内を
合成樹脂、ゴム製等からなる弾性隔膜６で一方を高圧空
気源１０に接続する空気室７、他方を試験サンプル３内
の加圧用液に接続する液室８に分割し、制御された空気
圧を液圧に変換するように構成してある。実施例の場
合、金属製の圧力タンク内はゴム製の隔膜６を内蔵し上
部に空気、下部に加圧用液が入っており、上部から空気
圧を導入することにより、タンク内の加圧用液が押し出
される方向に加圧するようになっている。また、アキュ
ームレータ５を試験槽１の水位よりも低い位置に設置
し、空気室７の空気圧がない空気圧停止時にサイホン効
果により下部の液室８内に加圧用液として試験槽１内の
収容液２（水）が供給されるように構成してある。ま
た、このアキュムレータ５を使用することにより、空気
と水が隔膜６により完全に分離できるので、空気室７側
への水の侵入や、ボトル等の試験サンプル３内への空気
の回り込みを防ぐことができる。Reference numeral 5 denotes a transfer barrier type accumulator which constitutes a pressurizing device for pressurizing the pressurizing liquid contained in the test sample 3, and a pressure tank made of metal or the like is filled with an elastic diaphragm made of synthetic resin, rubber or the like. At 6, one is divided into an air chamber 7 connected to a high-pressure air source 10, and the other is divided into a liquid chamber 8 connected to a pressurizing liquid in the test sample 3, so that a controlled air pressure is converted into a liquid pressure. is there. In the case of the embodiment, the inside of the metal pressure tank contains a rubber diaphragm 6 and has air in the upper part and a pressurizing liquid in the lower part. By introducing air pressure from the upper part, the pressurizing liquid in the tank is reduced. Pressure is applied in the direction of extrusion. Further, the accumulator 5 is installed at a position lower than the water level of the test tank 1, and when the air pressure in the air chamber 7 is stopped without the air pressure, the liquid contained in the test tank 1 as a pressurizing liquid in the lower liquid chamber 8 by a siphon effect. (Water) is supplied. Further, by using the accumulator 5, the air and the water can be completely separated by the diaphragm 6, so that the intrusion of the water into the air chamber 7 and the inflow of the air into the test sample 3 such as a bottle can be prevented. Can be.
【００１４】９は、前記試験サンプル３内の加圧用液を
昇圧させる前記アキュムレータ５と該試験サンプル３と
を連結する加圧用連結管体で、試験槽１に没入すべき一
端部にはボトル等の試験サンプル３の開口をねじ込み手
段等により嵌合し連結すべき接合部１１が一体に設けて
ある一方、多端部には前記アキュムレータ５の液室８に
液密に連結して設けてある。加圧用連結管体９の途中に
は、ボトル等の試験サンプル３の交換をしやすくするた
めのカプラ１２が設けてあり、このカプラ１２は試験サ
ンプル３への配管の途中に挿入したジョイントとして、
加圧用連結管体９の分割が可能とし、まずカプラ１２か
ら先の管体９を分離した状態で水を満たしたボトル等の
試験サンプル３を接合部１１にねじ込み、その後再びカ
プラ１２に差し込んで固定することができるように構成
してある。また、カプラ１２の連結部は、分離時には管
回路が閉状態になる自動開閉型の構成からなり、分割、
連結時にアキュムレータ５の下部の液室８に空気が入る
のを防いでいる。Reference numeral 9 denotes a connecting pipe for pressurizing the accumulator 5 for increasing the pressure of the pressurizing liquid in the test sample 3 and the test sample 3, and a bottle or the like at one end to be immersed in the test tank 1. A joint 11 to be fitted and connected to the opening of the test sample 3 by screwing means or the like is provided integrally, while a multi-end portion is provided in a liquid-tight manner to the liquid chamber 8 of the accumulator 5. A coupler 12 for facilitating replacement of the test sample 3 such as a bottle is provided in the middle of the pressurizing connection pipe body 9. The coupler 12 is used as a joint inserted in the middle of the pipe to the test sample 3.
The pressurized connecting tube 9 can be divided. First, a test sample 3 such as a bottle filled with water is screwed into the joint portion 11 in a state where the tube 9 is separated from the coupler 12, and then inserted into the coupler 12 again. It is configured so that it can be fixed. Further, the connecting portion of the coupler 12 has an automatic opening / closing type configuration in which the pipe circuit is closed when separated,
At the time of connection, air is prevented from entering the liquid chamber 8 below the accumulator 5.
【００１５】１５は、前記アキュームレータ５の空気室
７と高圧空気源１０とを接続する空気管回路１３の途中
に設けた電空比例弁で、入り口側で受けた高圧空気源１
０の高圧を、電源１４からコントローラ１６を介して供
給される電圧に比例して出口側の空気圧を制御する電磁
弁の一種からなり、前記加圧装置としてのアキュームレ
ータ５の空気室７の圧力、即ち、液室８側を介しての試
験サンプル３内の圧力を、例えば、コントローラ１６の
電圧０で、圧力０（大気圧に解放）、電圧５で、圧力５
ｋｇ／ｃｍ2 のように制御することができるように構成
してある。１７は電空比例弁１５の出力側の空気管回路
１３に接続した圧力センサで、前述の如く、電空比例弁
１５の出力側の圧力を検出することによって試験サンプ
ル３内の圧力を知ることができ、その検出信号を空気比
例弁１５にフィードバックし精度の高い制御を可能にす
ると共に、表示部１８に出力することによって時々刻々
と変化する現在圧力とその結果としてのピーク圧力を表
示し記録することができるように構成してある。なお、
前記圧力センサ１７は、図において破線１９で示すよう
に、フィードバック用に電空比例弁１５に内蔵させたも
のをそのまま使用することができる。Reference numeral 15 denotes an electro-pneumatic proportional valve provided in the middle of an air pipe circuit 13 connecting the air chamber 7 of the accumulator 5 and the high-pressure air source 10, and the high-pressure air source 1 received at the entrance side.
0 is a type of solenoid valve that controls the air pressure on the outlet side in proportion to the voltage supplied from the power supply 14 via the controller 16, the pressure in the air chamber 7 of the accumulator 5 as the pressurizing device, That is, the pressure in the test sample 3 via the liquid chamber 8 side is, for example, a pressure 0 (released to the atmospheric pressure) at a voltage 0 of the controller 16 and a pressure 5
It is configured so that it can be controlled as kg / cm 2 . Reference numeral 17 denotes a pressure sensor connected to the air pipe circuit 13 on the output side of the electro-pneumatic proportional valve 15, which detects the pressure in the test sample 3 by detecting the pressure on the output side of the electro-pneumatic proportional valve 15 as described above. The detection signal is fed back to the air proportional valve 15 to enable high-precision control, and is output to the display unit 18 to display and record the present pressure that changes every moment and the resulting peak pressure. It is configured to be able to do. In addition,
As the pressure sensor 17, as shown by a broken line 19 in the figure, a pressure sensor built in the electropneumatic proportional valve 15 for feedback can be used as it is.
【００１６】前記コントローラ１６は、圧力センサ１７
の検出信号に基づき電空比例弁１５に出力するための電
圧をコントロールするコントロール部を構成し、実施例
の場合は、一定速度の昇圧を得るために、目標圧力にな
るまで一定速度で電圧を上昇するように設定し、ボトル
等の試験サンプル３の破壊時の圧力降下を圧力センサ１
７で検出すると、所定の破壊レベルとの比較により、電
空比例弁１５を停止させ、出口側を大気圧に解放する。
例えば、目標圧力を１３ｋｇ／ｃｍ2 とし破壊レベルを
破壊時の圧力降下０．２ｋｇ／ｃｍ2 と設定した場合、
圧力が１２ｋｇ／ｃｍ2 でボトル等の試験サンプル３が
破壊し、圧力が１１．８ｋｇ／ｃｍ2 と降下したところ
で、“破壊”と判断し、ピーク圧力の１２ｋｇ／ｃｍ2
を破壊圧力と認定する。目標圧力になってもボトル等の
試験サンプルが破壊しない場合は、圧力はそのまま保
ち、破壊するまでの時間を測定する。なお、ボトル等の
試験サンプル３が破壊したとき、コントローラからの信
号により、表示部１８にピーク表示部としてピーク圧力
を表示するように構成することもできる。また、コント
ローラ１６は、ボトル等の試験サンプルの容量の大小、
強弱に関係なく、例えば、２〜２５ｋｇ／ｃｍ2 ・ｍｉ
ｎ、最大２５ｋｇ／ｃｍ2 のように、一定速度の昇圧速
度と最大目標圧力とを設定することができるように構成
してあり、自動車用インテークマニホールド等の部品、
チューブ、パイプ（ピンチオフ部を有するパイプ類を含
む）、缶、袋等の試験にも対応できる。The controller 16 includes a pressure sensor 17
A control unit for controlling a voltage to be output to the electropneumatic proportional valve 15 based on the detection signal of the first embodiment. In the case of the embodiment, in order to obtain a constant speed boost, the voltage is increased at a constant speed until the target pressure is reached. The pressure sensor 1 is set so as to rise, and the pressure drop when the test sample 3 such as a bottle is broken is
When the detection is made in step 7, the electropneumatic proportional valve 15 is stopped and the outlet side is released to the atmospheric pressure by comparison with a predetermined destruction level.
For example, if you set the target pressure 13 kg / cm 2 and the breakdown level and pressure drop 0.2 kg / cm 2 at break,
Pressure to break the test sample 3 such as bottles at 12 kg / cm 2, at a pressure drops and 11.8 kg / cm 2, it is determined as "destruction", the peak pressure 12 kg / cm 2
Is rated as burst pressure. If the test sample such as a bottle does not break even at the target pressure, keep the pressure as it is and measure the time until breakage. In addition, when the test sample 3 such as a bottle is broken, the peak pressure may be displayed on the display unit 18 as a peak display unit by a signal from the controller. Further, the controller 16 controls the size of the test sample such as a bottle,
Regardless of strength, for example, 2 to 25 kg / cm 2 · mi
n, such as a maximum of 25 kg / cm 2 , which is configured to be able to set a constant speed boosting speed and a maximum target pressure.
It can also handle tests on tubes, pipes (including pipes having a pinch-off portion), cans, bags, and the like.
【００１７】上記の実施例の操作手順の一例を示すと、
試験槽１に収容液２として水を張り所定の温度に温調し
ておく。次に、アキュームレータ５を試験槽１より低い
位置に設置し、ボトル等の試験サンプル３を接合しない
ままにして、加圧用連結管体９のカプラ１２から先の部
分を試験槽１の水中に差し込んでおく。コントローラ１
６の電源をいれ、電圧０で電空比例弁１５の解放弁が開
となり、アキュームレータ５の液室８も大気に解放する
と、試験槽１より水位の低いアキュームレータ５の液室
８に試験槽１の水がサイホン効果により液密に供給され
る。次に、テスト用のボトル等の試験サンプル３を槽内
に沈め、開口から水をいれる。加圧用連結管体９のカプ
ラ１２から先の部分を自動開閉弁付のカプラから分離
し、ボトル等の試験サンプル３の中に空気が入らないよ
うに注意しながら、その先端の接合部１１に試験サンプ
ル３をねじ込む。ボトル等の試験サンプル３を試験槽１
の水中にいれ、加圧用連結管体９のカプラ１２から先の
部分をカプラ１２に差し込んで固定する。これでボトル
等の試験サンプル３は圧力配管につながる。次いで、コ
ントローラ１６の昇圧速度、目標圧力、破壊レベルを設
定する。コントローラ１６のテストスイッチを押し昇圧
を開始する。圧力が上昇し、圧力センサ１７を介してサ
ンプル内の圧力は時々刻々表示部１８に表示され記録さ
れる。ボトル等の試験サンプル３が破壊すると、表示部
１８にコントローラ１６からの指令によりそのときのピ
ーク圧力が表示される。破壊と同時に電空比例弁１５が
停止し、圧力が大気に解放され、アキュムレータ５の空
気室７の空気圧が下がるので、アキュムレータ１５の液
室には再度試験槽１から水が供給される状態になる。従
って、上記の手順に従って次々とボトル等の試験サンプ
ル３を交換して耐圧試験を繰り返し行うことができるこ
ととなる。An example of the operation procedure of the above embodiment is shown below.
Water is filled in a test tank 1 as a storage liquid 2 and the temperature is adjusted to a predetermined temperature. Next, the accumulator 5 is installed at a position lower than the test tank 1, and the test sample 3 such as a bottle is left unbonded, and a portion of the pressurized connecting pipe 9 from the coupler 12 is inserted into the water of the test tank 1. Leave. Controller 1
6 is turned on, the release valve of the electropneumatic proportional valve 15 is opened at a voltage of 0, and the liquid chamber 8 of the accumulator 5 is also opened to the atmosphere. Of water is supplied liquid-tight by the siphon effect. Next, the test sample 3 such as a test bottle is immersed in the tank, and water is poured from the opening. Separate the portion from the coupler 12 of the connecting tube 9 for pressurization from the coupler with the automatic open / close valve, and take care not to allow air to enter the test sample 3 such as a bottle. Screw in test sample 3. Test sample 3 such as bottle
Of the pressurized connecting pipe 9, and a portion of the connecting pipe 9 from the coupler 12 is inserted into the coupler 12 and fixed. Thus, the test sample 3 such as a bottle is connected to the pressure pipe. Next, the pressure rising speed, the target pressure, and the destruction level of the controller 16 are set. The test switch of the controller 16 is pressed to start boosting. The pressure increases, and the pressure in the sample is displayed and recorded on the display unit 18 from time to time via the pressure sensor 17. When the test sample 3 such as a bottle is destroyed, the display section 18 displays the peak pressure at that time according to a command from the controller 16. Simultaneously with the destruction, the electropneumatic proportional valve 15 stops, the pressure is released to the atmosphere, and the air pressure in the air chamber 7 of the accumulator 5 decreases, so that the liquid chamber of the accumulator 15 is again supplied with water from the test tank 1. Become. Therefore, the pressure test can be repeatedly performed by replacing the test samples 3 such as bottles one after another according to the above procedure.
【００１８】[0018]
【発明の効果】上記の構成からなる本発明の圧力容器等
の耐圧試験方法によれば、試験槽内に収容液を収容し、
該収容液内に加圧用液を収容する圧力容器等の試験サン
プルを没入し、該試験サンプル内の加圧用液を加圧装置
により経時的に昇圧させ、且つ、昇圧状態を経時的に検
出するようにした構成を有するから、破壊に至る途中の
加圧力の変化を検出することができ、それにより、試験
条件に従って試験サンプル内の圧力を一定の割合でリニ
アに上昇させることができる効果がある。According to the pressure-resistant test method for a pressure vessel or the like of the present invention having the above-described structure, a liquid is contained in a test tank,
A test sample such as a pressure vessel containing the pressurizing liquid is immersed in the containing liquid, the pressurizing liquid in the test sample is pressurized over time by a pressurizing device, and the pressurized state is detected over time. With such a configuration, it is possible to detect a change in the pressing force in the process leading to the destruction, and thereby it is possible to linearly increase the pressure in the test sample at a constant rate according to the test conditions. .
【００１９】また、本発明は、前記試験方法において、
収容液及び加圧用液を水又は水溶液で構成することによ
り、収容液及び加圧用液の管理や温度コントロールを容
易にでき、容易に試験槽を所定温度の恒温槽とすること
ができる効果がある。また、本発明は、上記の試験方法
において、試験サンプル内の液を昇圧させる加圧装置を
試験槽の収容液の液位より低い位置に設置し、試験サン
プルと加圧装置を連結する加圧用連結管体内にサイホン
式に収容液を満たし、試験槽内に没入した試験サンプル
と加圧装置を該加圧用連結管体で液密に連結する構成を
有するから、ボトル等の試験サンプルを連結するとき、
加圧連結管に容易に加圧用液を満たすことができると共
に加圧用液に空気が流入するのを容易に防止することが
できる効果がある。Further, the present invention provides the test method,
Since the storage liquid and the pressurization liquid are composed of water or an aqueous solution, the management of the storage liquid and the pressurization liquid and the temperature control can be easily performed, and there is an effect that the test tank can easily be a constant temperature bath of a predetermined temperature. . Further, the present invention provides the above-mentioned test method, wherein a pressurizing device for increasing the pressure of the liquid in the test sample is installed at a position lower than the liquid level of the liquid stored in the test tank, and a pressurizing device for connecting the test sample and the pressurizing device. Since the connection pipe is filled with the liquid contained in a siphon manner and the test sample immersed in the test tank and the pressurizing device are connected in a liquid-tight manner by the pressurization connection pipe, the test sample such as a bottle is connected. When
There is an effect that the pressurizing connection pipe can be easily filled with the pressurizing liquid and air can be easily prevented from flowing into the pressurizing liquid.
【００２０】また、本発明に係る圧力容器等の耐圧試験
装置によれば、所定温度の収容液を収容し圧力容器等の
試験サンプルを没入する試験槽と、試験サンプル内の加
圧用液を昇圧させる加圧装置と、試験サンプルと加圧装
置を連結する加圧用連結管体と、加圧圧力を経時的に検
出する圧力センサと、圧力センサに接続し加圧状態を表
示し記録する表示部と、圧力センサに接続し加圧装置の
加圧状態をコントロールするコントロール部とからなる
構成を有するから、例えば、試験サンプルの加圧圧力を
圧力センサにより経時的に検出し、圧力センサに接続し
た表示部に加圧状態を表示し記録し、且つ圧力センサに
接続したコントロール部により試験サンプル内の加圧用
液を加圧時間に比例して昇圧させるようにコントロール
することができるから、試験サンプルの大小やクリープ
発生の有無にかかわらず、破壊するまでサンプル内圧力
をリニアに上昇することができる効果がある。Further, according to the pressure test apparatus for a pressure vessel or the like according to the present invention, a test tank for containing a liquid at a predetermined temperature and immersing a test sample such as a pressure vessel, and a pressurizing liquid in the test sample are pressurized. A pressurizing device, a connecting tube for pressurizing the test sample and the pressurizing device, a pressure sensor for detecting the pressurizing pressure over time, and a display unit connected to the pressure sensor for displaying and recording the pressurized state. And a control unit connected to the pressure sensor and controlling the pressurized state of the pressurizing device. For example, the pressurized pressure of the test sample is detected over time by the pressure sensor and connected to the pressure sensor. The pressurized state is displayed and recorded on the display unit, and can be controlled by the control unit connected to the pressure sensor so that the pressurized liquid in the test sample is pressurized in proportion to the pressurized time. Et al., With or without the test sample and small and creep occurs, there is an effect that it is possible to increase the sample within the pressure linearly to destroy.
【００２１】また、本発明は、前記の耐圧試験装置にお
いて、加圧装置を、圧力タンク内を弾性隔膜で一方を高
圧空気源に接続する空気室、他方を試験サンプル内の加
圧用液に接続する液室に分割し空気圧を液圧に変換する
トランスファーバリア型アキュームレータで構成したこ
とにより、圧縮率が大きく圧力変化の調整幅を大きくと
れ、微調整可能な空気圧をそのまま液圧に変換して試験
サンプルを加圧することができると共に、隔膜により空
気と液体を完全に分離することができるから、高圧空気
側の圧力センサ等への水の侵入や、ボトル等の試験サン
プル内への空気の回り込みが阻止できる効果がある。Further, according to the present invention, in the above-mentioned pressure test apparatus, the pressurizing device is configured such that one of the pressure chambers is connected to a high-pressure air source by an elastic diaphragm in the pressure tank and the other is connected to the pressurizing liquid in the test sample. The transfer barrier type accumulator that converts air pressure into liquid pressure by dividing it into liquid chambers to be compressed has a large compression ratio and a wide adjustment range of pressure change, and converts finely adjustable air pressure to liquid pressure as it is and tests Since the sample can be pressurized and the air and the liquid can be completely separated by the diaphragm, the intrusion of water into the pressure sensor on the high-pressure air side and the wraparound of the air into the test sample such as a bottle can be prevented. There is an effect that can be stopped.
【００２２】また、本発明は、前記装置において、トラ
ンスファーバリア型アキュームレータの空気室と高圧空
気源とを、電源からの電圧に比例して空気圧を制御する
電空比例弁を介して連結した構成を有するから、例え
ば、電圧０で、圧力０（大気圧に解放）、電圧５で、圧
力５ｋｇ／ｃｍ2のように容易、且つ正確に加圧装置の
加圧状態をコントロールすることができる効果がある。Further, according to the present invention, in the above apparatus, the air chamber of the transfer barrier type accumulator and the high-pressure air source are connected via an electro-pneumatic proportional valve for controlling the air pressure in proportion to the voltage from the power supply. For example, when the voltage is 0, the pressure is 0 (released to atmospheric pressure), and when the voltage is 5, the pressure is 5 kg / cm 2. is there.
【００２３】また、本発明は、前記装置において、電源
と電空比例弁との間に、前記アキュームレータの空気圧
を検出した検出圧力信号に基づいて前記電源からの電圧
を制御して電空比例弁に供給するコントロール部を設け
た構成を有するから、圧縮容器等の試験サンプルの強
弱、容量の大小等に対応して、電源からの電圧を制御し
て電空比例弁に供給することにより、例えば、圧力をか
けるとクリープを起こしやすいボトル等の試験サンプル
についても、その分も考慮した制御を行うことができる
効果がある。The present invention also provides the electro-pneumatic proportional valve between the power supply and the electro-pneumatic proportional valve by controlling a voltage from the power supply based on a detected pressure signal detected by detecting the air pressure of the accumulator. Since it has a configuration in which a control unit is provided for supplying pressure to the electropneumatic proportional valve by controlling the voltage from the power supply according to the strength of the test sample such as a compression container, the magnitude of the capacity, etc., for example, In addition, even for a test sample such as a bottle which is liable to creep when pressure is applied, there is an effect that control can be performed in consideration of the amount.
【図１】本発明に係る圧力容器等の耐圧試験方法とその
装置の一実施例を原理的に示す概略説明図である。FIG. 1 is a schematic explanatory view principally showing an embodiment of a pressure test method for a pressure vessel and the like and an apparatus therefor according to the present invention.
１ 試験槽 ２ 収容液 ３ 試験サンプル ４ 蓋体 ５ トランスファーバリア型アキュームレータ ６ 弾性隔膜 ７ 空気室 ８ 液室 ９ 加圧用連結管体 １０ 高圧空気源 １１ 接合部 １２ カプラ １３ 空気管回路 １４ 電源 １５ 電空比例弁 １６ コントローラ １７ 圧力センサ １８ 表示部 １９ 破線 DESCRIPTION OF SYMBOLS 1 Test tank 2 Contained liquid 3 Test sample 4 Lid 5 Transfer barrier type accumulator 6 Elastic diaphragm 7 Air chamber 8 Liquid chamber 9 Connecting pipe for pressurization 10 High pressure air source 11 Joint part 12 Coupler 13 Air pipe circuit 14 Power supply 15 Electro-pneumatic Proportional valve 16 Controller 17 Pressure sensor 18 Display 19 Dashed line
フロントページの続き (72)発明者 田中 洋二 東京都北区滝野川５−15−４ 株式会社 東洋精機製作所 内 (56)参考文献 実開 平５−57650（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.6，ＤＢ名) G01N 3/00 - 3/62Continuation of front page (72) Inventor Yoji Tanaka 5-15-4 Takinogawa, Kita-ku, Tokyo Inside Toyo Seiki Seisakusho Co., Ltd. (56) References Japanese Utility Model No. 5-57650 (JP, U) (58) Fields surveyed ( Int.Cl. 6 , DB name) G01N 3/00-3/62
Claims (5)
に加圧用液を収容する圧力容器等の試験サンプルを没入
し、該試験サンプル内の加圧用液を加圧装置により経時
的に昇圧させ、且つ、昇圧状態を経時的に検出するよう
にした圧力容器等の耐圧試験方法であって、試験サンプ
ル内の液を昇圧させる加圧装置を試験槽の収容液の液位
より低い位置に設置し、試験サンプルと加圧装置を連結
する加圧用連結管体内にサイホン式に収容液を満たし、
試験槽内に没入した試験サンプルと加圧装置を該加圧用
連結管体で液密に連結することを特徴とする圧力容器等
の耐圧試験方法。1. A test solution such as a pressure vessel for storing a pressurizing liquid is immersed in a test tank containing a liquid stored in a test tank, and the pressurized liquid in the test sample is passed through a pressurizing device. manner boosts, and the boosting state to a withstand voltage test method of the pressure vessel or the like so as to detected over time, the test sample
The pressurizing device that pressurizes the liquid in the tank
Installed at a lower position to connect test sample and pressurizing device
Fill the connection liquid in the siphon type into the pressurized connecting pipe body,
The test sample immersed in the test tank and the pressurizing device
A pressure test method for a pressure vessel or the like, characterized in that the connection pipe is connected in a liquid-tight manner.
及び加圧用液を水又は水溶液で構成することを特徴とす
る圧力容器等の耐圧試験方法。2. The method according to claim 1, wherein the containing liquid and the pressurizing liquid are composed of water or an aqueous solution.
試験サンプルを没入する試験槽と、試験サンプル内の加
圧用液を昇圧させる加圧装置と、試験サンプルと加圧装
置を連結する加圧用連結管体と、加圧圧力を経時的に検
出する圧力センサと、圧力センサに接続し加圧状態を表
示し記録する表示部と、圧力センサに接続し加圧装置の
加圧状態をコントロールするコントロール部とからな
り、加圧装置を、圧力タンク内を弾性隔膜で一方を高圧
空気源に接続する空気室、他方を試験サンプル内の加圧
用液に接続する液室に分割し空気圧を液圧に変換するト
ランスファーバリア型アキュームレータで構成したこと
を特徴とする圧力容器等の耐圧試験装置。3. A test tank containing a liquid at a predetermined temperature and receiving a test sample such as a pressure vessel, a pressurizing device for pressurizing a pressurizing liquid in the test sample, and connecting the test sample and the pressurizing device. A connecting tube for pressurization, a pressure sensor for detecting the pressurized pressure over time, a display unit connected to the pressure sensor to display and record the pressurized state, and a pressurized state of the pressurizing device connected to the pressure sensor. I from a control unit that controls
Pressurizing device, pressurize the inside of the pressure tank with an elastic diaphragm
An air chamber connected to an air source, the other being pressurized in the test sample
To convert the air pressure into liquid pressure
What is composed of a transfer barrier type accumulator
A pressure testing device for pressure vessels and the like characterized by the following .
スファーバリア型アキュームレータの空気室と高圧空気
源とを、電源からの電圧に比例して空気圧を制御する電
空比例弁を介して連結し、加圧装置の加圧状態をコント
ロールすることを特徴とする圧力容器等の耐圧試験装
置。4. The apparatus according to claim 3 , wherein the air chamber of the transfer barrier type accumulator and the high pressure air source are connected via an electropneumatic proportional valve that controls the air pressure in proportion to the voltage from the power supply, A pressure test device for a pressure vessel or the like, characterized in that the pressurized state of the pressurizing device is controlled.
電空比例弁との間に、前記アキュームレータの空気圧を
検出した検出圧力信号に基づいて前記電源からの電圧を
制御して電空比例弁に供給するコントロール部を設けた
ことを特徴とする圧力容器等の耐圧試験装置。5. The apparatus according to claim 4 , wherein a voltage from the power supply is controlled between a power supply and an electropneumatic proportional valve based on a detected pressure signal obtained by detecting an air pressure of the accumulator. A pressure test apparatus for a pressure vessel or the like, characterized in that a control section for supplying the valve is provided.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6284517A JP2824827B2 (en) | 1994-10-26 | 1994-10-26 | Pressure test method and equipment for pressure vessels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6284517A JP2824827B2 (en) | 1994-10-26 | 1994-10-26 | Pressure test method and equipment for pressure vessels |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08122234A JPH08122234A (en) | 1996-05-17 |
| JP2824827B2 true JP2824827B2 (en) | 1998-11-18 |
Family
ID=17679525
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6284517A Expired - Fee Related JP2824827B2 (en) | 1994-10-26 | 1994-10-26 | Pressure test method and equipment for pressure vessels |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2824827B2 (en) |
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|---|---|---|---|---|
| JPH0557650U (en) * | 1991-12-27 | 1993-07-30 | 横浜ゴム株式会社 | Hose pressure resistance test equipment |
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|---|---|---|---|---|
| KR101108564B1 (en) * | 2009-11-02 | 2012-01-30 | 한국표준과학연구원 | Pressure-Resistant Test Device and Pressure-Resistant Test Method |
| KR101113784B1 (en) * | 2009-11-02 | 2012-02-27 | 한국표준과학연구원 | Pressure-Resistant Test Device and Pressure-Resistant Test Method of Metallic Container |
| CN102564859A (en) * | 2011-12-27 | 2012-07-11 | 浙江大学 | Instability test device of external pressure vessel |
| CN105277327A (en) * | 2014-07-14 | 2016-01-27 | 太原纵横伟业机电技术有限公司 | Hydraulic pressure test detection system for gas cylinder |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08122234A (en) | 1996-05-17 |
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