JP4843152B2 - Pressure test apparatus and pressure test method - Google Patents

Pressure test apparatus and pressure test method Download PDF

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JP4843152B2
JP4843152B2 JP2001121469A JP2001121469A JP4843152B2 JP 4843152 B2 JP4843152 B2 JP 4843152B2 JP 2001121469 A JP2001121469 A JP 2001121469A JP 2001121469 A JP2001121469 A JP 2001121469A JP 4843152 B2 JP4843152 B2 JP 4843152B2
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大輔 坪井
幸司 野村
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Mitutoyo Corp
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Description

【０００１】
【発明の属する技術分野】
本発明は、微小圧力を負荷する試験のための圧力試験装置、及び圧力試験方法であって、特に、耐圧試験機を用いて微小圧力試験を行う場合に好適な圧力試験装置、及びこれを利用した圧力試験方法に関する。
【０００２】
【従来の技術】
従来、供試体の耐圧性を試験する装置として、例えば、耐圧試験機が知られている。
【０００３】
耐圧試験機は、供試体（例えば、電子機器など）を耐圧試験機内に配置して所定の圧力を加え、供試体の耐久性を評価する試験を行うための試験機である。
【０００４】
【発明が解決しようとする課題】
ところで、従来の耐圧試験機は、試験時において主に５０気圧前後の圧力を供試体に加えて試験をするものであるため、供試体として例えば、レーザひずみ計やレーザ津波計等、圧力測定装置のうちでも微小な圧力を測定する圧力測定装置（以下、微小圧力測定装置）が所定の圧力を精確に測定しているかを試験するのには不適であるという問題があった。
本発明は上記事情に鑑みてなされたものであって、従来の耐圧試験機を有効に利用しながら、微小圧力測定装置を容易、且つ精確に試験することのできる圧力測定装置、及び圧力試験方法を提供することを目的とする。
【０００５】
【課題を解決するための手段】
上記課題を解決するために、請求項１記載の発明は、例えば、図１に示すように、
被験体（例えば、被験機９）を内部に配置し、当該被験体に圧力を負荷する耐圧試験機７と、
前記耐圧試験機に初期圧を加える圧力負荷手段（例えば、ポンプ１１）と、
前記耐圧試験機と前記圧力負荷手段とを接続する主ホース部（例えば、主ホース２Ａ）と、
前記主ホース部に設けられる第１のバルブ（例えば、バルブ８ａ）と、
前記耐圧試験機と前記第１のバルブとの間の前記主ホース部に設けられ、当該主ホース部内の空気を分岐させる分岐部（例えば、分岐部３）と、
前記分岐部に両端が接続されるループ状の分岐ホース部（例えば、分岐ホース２Ｃ）と、
前記耐圧試験機と前記分岐部との間の前記主ホース部に設けられ、当該耐圧試験機に微圧を加える微圧負荷手段（例えば、マイクロメータヘッド５）と、
前記分岐ホース部に設けられる第２のバルブ（例えば、バルブ８ｂ）と、
前記分岐ホース部に設けられ、前記第２のバルブを閉じた状態で前記耐圧試験機に加えられる微圧により前記分岐ホース部内に生じる微差圧を測定する微差圧測定手段（例えば、微差圧計４）と、
を備えることを特徴としている。
【０００６】
請求項１記載の発明によれば、圧力を負荷する耐圧試験機の内部に被験体が配置され、圧力負荷手段により耐圧試験機に初期圧が加えられる。そして、主ホース部に設けられる第１のバルブが閉められることにより、この初期圧が耐圧試験機内に維持され、次に、分岐ホース部に設けられる第２のバルブが閉められて、微圧負荷手段により耐圧試験機に微圧が加えられる。そして、分岐ホース部に設けられる微差圧測定手段により、耐圧試験機に加えられる微圧に基づく分岐ホース部内の微差圧が測定される。
従って、耐圧試験機内の被験体に加えられる圧力値が精確にわかるので、被験体がこの値を測定したかを確認することによって、被験体の測定精度を簡単に試験することができる。
【０００９】
請求項２記載の発明は、請求項１記載の圧力試験装置を用いた圧力試験方法であって、
前記耐圧試験機内に圧力を測定可能な圧力測定装置を配置するステップと、
前記第１のバルブ及び前記第２のバルブを開放した状態で、前記圧力負荷手段により前記耐圧試験機に初期圧を加えるステップと、
前記第１のバルブを閉め、初期圧を維持するステップと、
前記第２のバルブを閉め、前記微圧負荷手段により前記耐圧試験機に微圧を加えるステップと、
前記微差圧測定手段により、前記耐圧試験機に加えられる微圧による前記分岐ホース部内の微差圧を測定するとともに、当該耐圧試験機内に配置される前記圧力測定装置により、当該圧力測定装置に加えられる圧力を測定するステップと、
からなる各ステップを含むことを特徴としている。
【００１０】
請求項２記載の発明によれば、耐圧試験機内に圧力を測定可能な圧力測定装置が配置され、第１のバルブ及び第２のバルブが開放された状態で、圧力負荷手段により耐圧試験機に初期圧が加えられる。そして、第１のバルブが閉められて初期圧が維持され、次に、第２のバルブが閉められて、微圧負荷手段により耐圧試験機に微圧が加えられる。そして、微差圧測定手段により、耐圧試験機に加えられる微圧に基づく分岐ホース部内の微差圧が測定されるとともに、耐圧試験機内に配置される圧力測定装置により、圧力測定装置に加えられる圧力が測定される。
従って、微差圧測定手段により、耐圧試験機内の被験体に加えられる圧力値が精確にわかるので、被験体がこの値を測定したかを確認することによって、被験体の測定精度を簡単に試験することができる。
【００１１】
【発明の実施の形態】
以下、本発明の実施の形態を、図面を参照しながら詳細に説明する。
図１は、本発明に係る圧力試験装置１の構成を簡略的に表す図である。
【００１２】
まず、圧力試験装置１の構造について説明する。圧力試験装置１は、耐圧試験機７と、この耐圧試験機７に一端が接続される主ホース２Ａと、この主ホース２Ａの他端に接続され主ホース２Ａ内の空気を分岐させる分岐部３と、を備えている。この分岐部３には、中央の中ホース２Ｂと、この中ホース２Ｂを挟み、両端が分岐部３に接続されるループ状の分岐ホース２Ｃと、が取り付けられている。そして、中ホース２Ｂの他端には加圧用のポンプ１１が取り付けられている。
【００１３】
耐圧試験機７は、耐圧性の容器（図示省略）に被検機としての圧力測定装置を収納し、容器内の圧力を高めることにより耐圧試験を行うためのものである。
主ホース２Ａには、マイクロメータヘッド５を備える取付部６が設置される。マイクロメータヘッド５は、シンブル５ａ、スリーブ５ｂ、スピンドル５ｃを備え、シンブル５ａを回すと、シンブル５ａ内のネジ（図示省略）が回転して、取付部６内においてスピンドル５ｃが主ホース２Ａ内へ僅かに突出するが、その値はシンブル５ａとスリーブ５ｂに設けられた目盛りにより測定できるようになっている。スピンドル５ｃを突出させると、主ホース２Ａに微小な圧力を加えることができる。
【００１４】
また、取付部６には、主ホース２Ａ内の圧力を測定する圧力計１０も取り付けられている。この圧力計１０は、微小な圧力の測定には適さないため、本実施の形態においては考慮しないが、耐圧試験機７による従来の圧力測定装置の試験では、この圧力計１０を使用して圧力を測定する。
【００１５】
中ホース２Ｂにはバルブ８ａが設置される。バルブ８ａは、ポンプ１１と圧力試験装置１の接続を遮断するものである。なお、バルブ８ａ、８ｂ（後述）は、微差圧を精密に設定し測定するためには、精度の良い部品を用いることが好ましい。
【００１６】
分岐ホース２Ｃには、バルブ８ｂと微差圧計４が取り付けられている。微差圧計４は、分岐ホース２Ｃの内部空間における２点間の圧力差を測定するものである。バルブ８ｂは、微差圧計４の両端に圧力差を作り出す際に、微差圧計４の片側の分岐ホース２Ｃの接続を他から遮断するもので、これを閉めることにより、バルブ８ｂから微差圧計４までの区間の圧力を一定に維持することができる。
【００１７】
次に、上述のように構成された本実施の形態の圧力試験装置１の動作について説明する。
まず、耐圧試験機７内に被験機９を配置し、マイクロメータヘッド５の目盛りをゼロに合わせ、バルブ８ａ、及び８ｂが完全に開いているのを確認してから、ポンプ１１により初期圧として所定の圧力を圧力試験装置１に加える。
【００１８】
次に、初期圧を圧力試験装置１内に維持するため、バルブ８ａを閉めてポンプ１１との接続を遮断するが、この時、ポンプ１１からバルブ８ａの区間を除いて、圧力試験装置１内における各地点の圧力は等しく、従って微差圧計４はゼロを測定する。
【００１９】
又、主ホース２Ａを介して、耐圧試験機７に初期圧が加えられるため、耐圧試験機７内に配置される被験機９にも同様に初期圧が加わり、被験機９に備わる図示しないメータがこの初期圧を測定する。測定値は目視、レコーダ等により記録する。
【００２０】
初期圧の測定後、更にバルブ８ｂを閉め、バルブ８ｂから微差圧計４までの区間の圧力を初期圧のまま維持する。そして、マイクロメータヘッド５のシンブル５ａを回し、取付部６の内部においてスピンドル５ｃを主ホース２Ａ内へ僅かに突出させ、圧力試験装置１に微小な圧力を加える。すると、圧力試験装置１に加わる圧力は、スピンドル５ｃによって押し込まれた体積分だけ、初期圧から僅かに上昇するので、この値を再び被験機９のメータによって測定し、測定値を記録する。
【００２１】
一方、バルブ８ｂから微差圧計４までの区間の圧力は、バルブ８ｂが閉まっているため初期圧のまま変化せず、分岐部３と微差圧計４間の圧力のみが僅かに上昇する。この微差圧を微差圧計４によって測定し、測定値を目視、レコーダ等により記録する。
【００２２】
試験の操作は以上で終了であるが、マイクロメータヘッド５操作後の被験機９の測定値から初期圧を差し引いた値が、微差圧計４が測定した微差圧の値に等しければ、被験機９は微差圧を精確に測定したことになり、従って、被験機９の測定に誤差がないことが確認される。
【００２３】
以上のように、本実施の形態の圧力試験装置１によれば、マイクロメータヘッド５を突出させることによって加わる微差圧を微差圧計４によって測定し、被験機９がこの値を精確に測定したかを確認することによって、被験機９の測定精度を試験することができる。
【００２４】
尚、上記実施の形態においては、本発明にかかる圧力試験装置１の一実施形態について説明したが、本発明は上述した実施形態に限定されるものではなく、種々の変更が可能である事は言うまでもない。
例えば、試験を実施する前に、マイクロメータヘッド５の目盛りを読み取りつつ、マイクロメータヘッド５を僅かずつ移動させ、移動させた値とそれに対応して得られた微差圧を微差圧計４によって夫々測定し、両者を対応させた表を作成しておく。この表を参照すれば、マイクロメータヘッド５の移動量に対して得られる微差圧がすぐわかるので、圧力試験装置１に微差圧計４を備える必要がなくなり、よりコストパフォーマンスに優れ、簡便な圧力試験装置とすることができる。
【００２５】
又、圧力試験装置１に微圧を加える手段としては、マイクロメータヘッド５を用いたが、押し込んだり引抜いたりして圧力試験装置１に微圧を加えるものであれば、マイクロメータヘッド５に限らず何であっても良い。
【００２６】
【発明の効果】
請求項１記載の発明によれば、圧力を負荷する耐圧試験機の内部に被験体が配置され、圧力負荷手段により耐圧試験機に初期圧が加えられる。そして、主ホース部に設けられる第１のバルブが閉められることにより、この初期圧が耐圧試験機内に維持され、次に、分岐ホース部に設けられる第２のバルブが閉められて、微圧負荷手段により耐圧試験機に微圧が加えられる。そして、分岐ホース部に設けられる微差圧測定手段により、耐圧試験機に加えられる微圧に基づく分岐ホース部内の微差圧が測定される。
従って、耐圧試験機内の被験体に加えられる圧力値が精確にわかるので、被験体がこの値を測定したかを確認することによって、被験体の測定精度を簡単に試験することができる。
【００２７】
請求項２記載の発明によれば、圧力を負荷する耐圧試験機の内部に被験体が配置され、圧力負荷手段により耐圧試験機に初期圧が加えられる。そして、主ホース部に設けられる第１のバルブが閉められることにより、この初期圧が耐圧試験機内に維持され、次に、分岐ホース部に設けられる第２のバルブが閉められて、マイクロメータヘッドにより耐圧試験機に微圧が加えられる。この時、どれだけの微圧が耐圧試験機に加えられたかは、マイクロメータヘッドの移動量を目盛りによって参照することでわかる。
従って、耐圧試験機内の被験体に加えられる圧力値が精確にわかるので、被験体がこの値を測定したかを確認することによって、被験体の測定精度を簡単に試験することができる。
又、マイクロメータヘッドが耐圧試験機に加える微圧は、マイクロメータヘッドの移動量と、それによって加えられる圧力を前もって対応させておくことによりわかるので、当該圧力試験装置に微差圧測定手段を備える必要が無く、より簡単な構成とすることができる。
【００２８】
請求項３記載の発明によれば、耐圧試験機内に圧力を測定可能な圧力測定装置が配置され、第１のバルブ及び第２のバルブが開放された状態で、圧力負荷手段により耐圧試験機に初期圧が加えられる。そして、第１のバルブが閉められて初期圧が維持され、次に、第２のバルブが閉められて、微圧負荷手段により耐圧試験機に微圧が加えられる。そして、微差圧測定手段により、耐圧試験機に加えられる微圧に基づく分岐ホース部内の微差圧が測定されるとともに、耐圧試験機内に配置される圧力測定装置により、圧力測定装置に加えられる圧力が測定される。
従って、微差圧測定手段により、耐圧試験機内の被験体に加えられる圧力値が精確にわかるので、被験体がこの値を測定したかを確認することによって、被験体の測定精度を簡単に試験することができる。
【図面の簡単な説明】
【図１】本発明に係る圧力試験装置の構成を簡略的に表す図である。
【符号の説明】
１ 圧力試験装置
２Ａ 主ホース（主ホース部）
２Ｃ 分岐ホース（分岐ホース部）
４ 微差圧計（微差圧測定手段）
５ マイクロメータヘッド（微圧負荷手段）
７ 耐圧試験機
８ａ バルブ（第１のバルブ）
８ｂ バルブ（第２のバルブ）
９ 被験機（被験体）
１１ ポンプ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pressure test apparatus and a pressure test method for a test that applies a minute pressure, and in particular, a pressure test apparatus that is suitable for performing a minute pressure test using a pressure tester, and uses the same. Pressure test method.
[0002]
[Prior art]
Conventionally, for example, a pressure tester is known as a device for testing the pressure resistance of a specimen.
[0003]
The pressure tester is a tester for performing a test in which a specimen (for example, an electronic device or the like) is placed in a pressure tester, a predetermined pressure is applied, and the durability of the specimen is evaluated.
[0004]
[Problems to be solved by the invention]
By the way, since a conventional pressure tester is a test that mainly applies a pressure of around 50 atm to a test piece at the time of the test, a pressure measuring device such as a laser strain gauge or a laser tsunami meter is used as the test piece. Among them, there is a problem that a pressure measuring device that measures a minute pressure (hereinafter referred to as a minute pressure measuring device) is not suitable for testing whether a predetermined pressure is accurately measured.
The present invention has been made in view of the above circumstances, and a pressure measuring device and a pressure testing method capable of easily and accurately testing a micro pressure measuring device while effectively utilizing a conventional pressure testing machine. The purpose is to provide.
[0005]
[Means for Solving the Problems]
In order to solve the above problem, the invention according to claim 1 is, for example, as shown in FIG.
A pressure tester 7 that places a subject (eg, tester 9) inside and applies pressure to the subject;
Pressure load means (for example, pump 11) for applying an initial pressure to the pressure tester;
A main hose portion (for example, main hose 2A) connecting the pressure tester and the pressure load means;
A first valve (for example, a valve 8a) provided in the main hose portion;
A branch portion (for example, a branch portion 3) provided in the main hose portion between the pressure tester and the first valve, for branching the air in the main hose portion;
A loop-shaped branch hose part (for example, a branch hose 2C) whose both ends are connected to the branch part;
A fine pressure loading means (for example, a micrometer head 5) that is provided in the main hose portion between the pressure tester and the branch part, and applies a slight pressure to the pressure tester;
A second valve (for example, a valve 8b) provided in the branch hose portion;
A fine differential pressure measuring means (for example, a fine difference) that is provided in the branch hose portion and measures a fine differential pressure generated in the branch hose portion by a fine pressure applied to the pressure resistance tester with the second valve closed. Pressure gauge 4),
It is characterized by having.
[0006]
According to the first aspect of the present invention, the subject is placed inside the pressure tester that applies pressure, and the initial pressure is applied to the pressure tester by the pressure load means. Then, by closing the first valve provided in the main hose part, this initial pressure is maintained in the pressure resistance tester, and then the second valve provided in the branch hose part is closed, so that a slight pressure load is maintained. A slight pressure is applied to the pressure tester by the means. And the fine differential pressure in the branch hose part based on the fine pressure applied to the pressure tester is measured by the fine differential pressure measuring means provided in the branch hose part.
Therefore, since the pressure value applied to the subject in the pressure tester can be accurately determined, it is possible to easily test the measurement accuracy of the subject by confirming whether the subject has measured this value.
[0009]
Invention of Claim 2 is the pressure test method using the pressure test apparatus of Claim 1, Comprising:
Placing a pressure measuring device capable of measuring pressure in the pressure tester;
Applying an initial pressure to the pressure tester by the pressure load means with the first valve and the second valve opened; and
Closing the first valve and maintaining an initial pressure;
Closing the second valve and applying a fine pressure to the pressure tester by the fine pressure loading means;
The micro differential pressure measuring means measures the micro differential pressure in the branch hose part due to the micro pressure applied to the pressure tester, and the pressure measuring device disposed in the pressure tester allows the pressure measuring device to Measuring the applied pressure;
It is characterized by including each step consisting of.
[0010]
According to the second aspect of the present invention, the pressure measuring device capable of measuring pressure is arranged in the pressure tester, and the pressure load means is used by the pressure load means in a state where the first valve and the second valve are opened. Initial pressure is applied. Then, the first valve is closed and the initial pressure is maintained, and then the second valve is closed and a slight pressure is applied to the pressure tester by the minute pressure load means. Then, the micro differential pressure measuring means measures the micro differential pressure in the branch hose portion based on the micro pressure applied to the pressure tester, and applies it to the pressure measuring device by the pressure measuring device arranged in the pressure tester. The pressure is measured.
Therefore, since the pressure value applied to the subject in the pressure tester can be accurately determined by the differential pressure measuring means, it is easy to test the measurement accuracy of the subject by checking whether the subject has measured this value. can do.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a diagram schematically illustrating the configuration of a pressure test apparatus 1 according to the present invention.
[0012]
First, the structure of the pressure test apparatus 1 will be described. The pressure test apparatus 1 includes a pressure tester 7, a main hose 2A connected at one end to the pressure tester 7, and a branching unit 3 connected to the other end of the main hose 2A and branching the air in the main hose 2A. And. The branch portion 3 is attached with a center middle hose 2B and a loop-like branch hose 2C sandwiching the middle hose 2B and having both ends connected to the branch portion 3. A pressurizing pump 11 is attached to the other end of the middle hose 2B.
[0013]
The pressure tester 7 is for performing a pressure test by storing a pressure measuring device as a test machine in a pressure resistant container (not shown) and increasing the pressure in the container.
A mounting portion 6 having a micrometer head 5 is installed on the main hose 2A. The micrometer head 5 includes a thimble 5a, a sleeve 5b, and a spindle 5c. When the thimble 5a is turned, a screw (not shown) in the thimble 5a rotates so that the spindle 5c is moved into the main hose 2A in the mounting portion 6. Although slightly protruding, the value can be measured by a scale provided on the thimble 5a and the sleeve 5b. When the spindle 5c is projected, a minute pressure can be applied to the main hose 2A.
[0014]
A pressure gauge 10 that measures the pressure in the main hose 2A is also attached to the attachment portion 6. Since this pressure gauge 10 is not suitable for measuring a minute pressure, it is not considered in the present embodiment. However, in the test of the conventional pressure measuring apparatus by the pressure tester 7, the pressure gauge 10 is used to measure the pressure. Measure.
[0015]
A valve 8a is installed in the middle hose 2B. The valve 8 a is for disconnecting the connection between the pump 11 and the pressure test apparatus 1. The valves 8a and 8b (described later) preferably use highly accurate parts in order to accurately set and measure the fine differential pressure.
[0016]
A valve 8b and a slight differential pressure gauge 4 are attached to the branch hose 2C. The micro differential pressure gauge 4 measures a pressure difference between two points in the internal space of the branch hose 2C. The valve 8b is used to cut off the connection of the branch hose 2C on one side of the micro differential pressure gauge 4 from the other when creating a pressure difference between both ends of the micro differential pressure gauge 4. By closing this, the micro differential pressure gauge is connected to the valve 8b. The pressure in the section up to 4 can be kept constant.
[0017]
Next, operation | movement of the pressure test apparatus 1 of this Embodiment comprised as mentioned above is demonstrated.
First, the test machine 9 is arranged in the pressure tester 7, the scale of the micrometer head 5 is set to zero, and it is confirmed that the valves 8 a and 8 b are completely opened, and then the initial pressure is set by the pump 11. A predetermined pressure is applied to the pressure test apparatus 1.
[0018]
Next, in order to maintain the initial pressure in the pressure test apparatus 1, the valve 8a is closed to disconnect the connection with the pump 11. At this time, except for the section from the pump 11 to the valve 8a, The pressure at each point is equal, so the differential pressure gauge 4 measures zero.
[0019]
In addition, since the initial pressure is applied to the pressure tester 7 via the main hose 2A, the initial pressure is similarly applied to the test machine 9 arranged in the pressure tester 7, and a meter (not shown) provided in the test machine 9 is provided. Measures this initial pressure. Record the measured values visually or with a recorder.
[0020]
After the initial pressure is measured, the valve 8b is further closed, and the pressure in the section from the valve 8b to the micro differential pressure gauge 4 is maintained at the initial pressure. Then, the thimble 5a of the micrometer head 5 is turned, the spindle 5c is slightly protruded into the main hose 2A inside the mounting portion 6, and a minute pressure is applied to the pressure test apparatus 1. Then, the pressure applied to the pressure test apparatus 1 slightly rises from the initial pressure by the volume applied by the spindle 5c, so this value is again measured by the meter of the test machine 9, and the measured value is recorded.
[0021]
On the other hand, the pressure in the section from the valve 8b to the fine differential pressure gauge 4 does not change as the initial pressure because the valve 8b is closed, and only the pressure between the branch portion 3 and the fine differential pressure gauge 4 slightly increases. This fine differential pressure is measured by the fine differential pressure gauge 4, and the measured value is recorded visually or with a recorder or the like.
[0022]
The operation of the test is completed. If the value obtained by subtracting the initial pressure from the measured value of the test machine 9 after the operation of the micrometer head 5 is equal to the value of the fine differential pressure measured by the fine differential pressure gauge 4, the test is completed. Therefore, it is confirmed that the measurement of the test apparatus 9 has no error.
[0023]
As described above, according to the pressure test apparatus 1 of the present embodiment, the fine differential pressure applied by causing the micrometer head 5 to protrude is measured by the fine differential pressure gauge 4, and the tester 9 accurately measures this value. By confirming whether or not, the measurement accuracy of the test apparatus 9 can be tested.
[0024]
In the above embodiment, one embodiment of the pressure test apparatus 1 according to the present invention has been described. However, the present invention is not limited to the above-described embodiment, and various modifications can be made. Needless to say.
For example, before carrying out the test, while the scale of the micrometer head 5 is read, the micrometer head 5 is moved little by little, and the moved value and the fine differential pressure obtained correspondingly are measured by the fine differential pressure gauge 4. Measure each one and create a table that matches the two. Referring to this table, since the fine differential pressure obtained with respect to the movement amount of the micrometer head 5 can be immediately known, it is not necessary to provide the pressure test device 1 with the fine differential pressure gauge 4, and it is excellent in cost performance and simple. It can be a pressure test device.
[0025]
The micrometer head 5 is used as a means for applying a fine pressure to the pressure test apparatus 1. However, the micrometer head 5 is not limited as long as it applies a slight pressure to the pressure test apparatus 1 by pushing or pulling it out. Anything is OK.
[0026]
【The invention's effect】
According to the first aspect of the present invention, the subject is placed inside the pressure tester that applies pressure, and the initial pressure is applied to the pressure tester by the pressure load means. Then, by closing the first valve provided in the main hose part, this initial pressure is maintained in the pressure resistance tester, and then the second valve provided in the branch hose part is closed, so that a slight pressure load is maintained. A slight pressure is applied to the pressure tester by the means. And the fine differential pressure in the branch hose part based on the fine pressure applied to the pressure tester is measured by the fine differential pressure measuring means provided in the branch hose part.
Therefore, since the pressure value applied to the subject in the pressure tester can be accurately determined, it is possible to easily test the measurement accuracy of the subject by confirming whether the subject has measured this value.
[0027]
According to the second aspect of the present invention, the subject is arranged inside the pressure tester that applies pressure, and the initial pressure is applied to the pressure tester by the pressure load means. Then, by closing the first valve provided in the main hose part, this initial pressure is maintained in the pressure resistance tester, and then the second valve provided in the branch hose part is closed, and the micrometer head As a result, a slight pressure is applied to the pressure tester. At this time, how much fine pressure is applied to the pressure tester can be understood by referring to the moving amount of the micrometer head with a scale.
Therefore, since the pressure value applied to the subject in the pressure tester can be accurately determined, it is possible to easily test the measurement accuracy of the subject by confirming whether the subject has measured this value.
Also, the micro pressure applied to the pressure tester by the micrometer head can be determined by making the amount of movement of the micrometer head correspond to the pressure applied thereby in advance. There is no need to provide a simpler configuration.
[0028]
According to the third aspect of the present invention, the pressure measuring device capable of measuring the pressure is arranged in the pressure tester, and the pressure load means is used by the pressure load means in a state where the first valve and the second valve are opened. Initial pressure is applied. Then, the first valve is closed and the initial pressure is maintained, and then the second valve is closed and a slight pressure is applied to the pressure tester by the minute pressure load means. Then, the micro differential pressure measuring means measures the micro differential pressure in the branch hose portion based on the micro pressure applied to the pressure tester, and applies it to the pressure measuring device by the pressure measuring device arranged in the pressure tester. The pressure is measured.
Therefore, since the pressure value applied to the subject in the pressure tester can be accurately determined by the differential pressure measuring means, it is easy to test the measurement accuracy of the subject by checking whether the subject has measured this value. can do.
[Brief description of the drawings]
FIG. 1 is a diagram schematically illustrating a configuration of a pressure test apparatus according to the present invention.
[Explanation of symbols]
1 Pressure test device 2A Main hose (main hose part)
2C Branch hose (branch hose part)
4 Fine differential pressure gauge (Measuring means of fine differential pressure)
5 Micrometer head (micro-pressure loading means)
7 Pressure tester 8a Valve (first valve)
8b Valve (second valve)
9 Test aircraft (subject)
11 Pump

Claims (2)

被験体を内部に配置し、当該被験体に圧力を負荷する耐圧試験機と、
前記耐圧試験機に初期圧を加える圧力負荷手段と、
前記耐圧試験機と前記圧力負荷手段とを接続する主ホース部と、
前記主ホース部に設けられる第１のバルブと、
前記耐圧試験機と前記第１のバルブとの間の前記主ホース部に設けられ、当該主ホース部内の空気を分岐させる分岐部と、
前記分岐部に両端が接続されるループ状の分岐ホース部と、
前記耐圧試験機と前記分岐部との間の前記主ホース部に設けられ、当該耐圧試験機に微圧を加える微圧負荷手段と、
前記分岐ホース部に設けられる第２のバルブと、
前記分岐ホース部に設けられ、前記第２のバルブを閉じた状態で前記耐圧試験機に加えられる微圧により前記分岐ホース部内に生じる微差圧を測定する微差圧測定手段と、
を備えることを特徴とする圧力試験装置。A pressure tester that places the subject inside and applies pressure to the subject; and
Pressure load means for applying an initial pressure to the pressure tester;
A main hose portion connecting the pressure tester and the pressure load means;
A first valve provided in the main hose portion;
A branching portion provided in the main hose portion between the pressure tester and the first valve, for branching the air in the main hose portion;
A loop-shaped branch hose part having both ends connected to the branch part;
Provided in the main hose part between the pressure tester and the branch part , a fine pressure loading means for applying a fine pressure to the pressure tester,
A second valve provided in the branch hose portion;
A fine differential pressure measuring means that is provided in the branch hose part and measures a fine differential pressure generated in the branch hose part by a fine pressure applied to the pressure resistance tester in a state where the second valve is closed ;
A pressure test apparatus comprising: 請求項１記載の圧力試験装置を用いた圧力試験方法であって、
前記耐圧試験機内に圧力を測定可能な圧力測定装置を配置するステップと、
前記第１のバルブ及び前記第２のバルブを開放した状態で、前記圧力負荷手段により前記耐圧試験機に初期圧を加えるステップと、
前記第１のバルブを閉め、初期圧を維持するステップと、
前記第２のバルブを閉め、前記微圧負荷手段により前記耐圧試験機に微圧を加えるステップと、
前記微差圧測定手段により、前記耐圧試験機に加えられる微圧による前記分岐ホース部内の微差圧を測定するとともに、当該耐圧試験機内に配置される前記圧力測定装置により、当該圧力測定装置に加えられる圧力を測定するステップと、
からなる各ステップを含むことを特徴とする圧力試験方法。A pressure test method using the pressure test apparatus according to claim 1,
Placing a pressure measuring device capable of measuring pressure in the pressure tester;
Applying an initial pressure to the pressure tester by the pressure load means with the first valve and the second valve opened; and
Closing the first valve and maintaining an initial pressure;
Closing the second valve and applying a fine pressure to the pressure tester by the fine pressure loading means;
The micro differential pressure measuring means measures the micro differential pressure in the branch hose part due to the micro pressure applied to the pressure tester, and the pressure measuring device disposed in the pressure tester allows the pressure measuring device to Measuring the applied pressure;
A pressure test method comprising the steps of:
JP2001121469A 2001-04-19 2001-04-19 Pressure test apparatus and pressure test method Expired - Fee Related JP4843152B2 (en)

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CN103499415A (en) * 2013-10-21 2014-01-08 沈阳仪表科学研究院有限公司 Pressure pulse testing machine

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