JPS6251410B2 - - Google Patents
Info
- Publication number
- JPS6251410B2 JPS6251410B2 JP494083A JP494083A JPS6251410B2 JP S6251410 B2 JPS6251410 B2 JP S6251410B2 JP 494083 A JP494083 A JP 494083A JP 494083 A JP494083 A JP 494083A JP S6251410 B2 JPS6251410 B2 JP S6251410B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- gas container
- water
- gas
- test
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 41
- 238000012360 testing method Methods 0.000 claims description 22
- 238000010998 test method Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 52
- 230000007797 corrosion Effects 0.000 description 15
- 238000005260 corrosion Methods 0.000 description 15
- 238000001514 detection method Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 3
- 238000011179 visual inspection Methods 0.000 description 3
- OHJMTUPIZMNBFR-UHFFFAOYSA-N biuret Chemical compound NC(=O)NC(N)=O OHJMTUPIZMNBFR-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 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
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)
- Examining Or Testing Airtightness (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
本発明はガス容器、殊に家庭用液化石油ガス容
器の非水槽式耐圧試験法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a non-tank pressure test method for gas containers, particularly household liquefied petroleum gas containers.
ガス容器に対する耐圧再検査には、水槽式試験
と非水槽式試験とがあり、わが国においては法令
により500未満の内容積のガス容器については
原則として水槽式同位ビユーレツト法によるもの
とすると定められている。
There are two types of pressure re-inspection for gas containers: water tank type tests and non-water tank type tests.In Japan, laws and regulations stipulate that gas containers with an internal volume of less than 500 mm are to be tested according to the water tank type same pressure test method as a general rule. There is.
この理由は非水槽式の方が試験操作が簡単では
あるが、計算が厄介であること、加圧ポンプの漏
洩が直ちに測定結果にひびくことなどである。し
かし、現在では漏洩のない加圧ポンプが提供され
ており、また計算もコンピユーターの利用が進ん
できていることから実際には試験時にガス容器内
にエアポケツトさえない状態とすれば何ら問題は
ないものとなつてきている。 The reasons for this are that, although test operations are easier with the non-tank type, calculations are more troublesome, and leakage from the pressure pump immediately affects the measurement results. However, now leak-free pressure pumps are available, and computers are increasingly being used for calculations, so in reality, as long as there are no air pockets in the gas container during the test, there should be no problem. It's becoming more and more common.
ところで近年家庭用の120未満の内容積であ
るガス容器は製造後の経過年数がかなり長くなつ
たものが多くなり、錆の発生による腐蝕孔からの
ガス洩れでしばしば事故を招いている。従つて腐
蝕孔の有無は試験段階で発見することが望まれて
いるわけである。しかるに水槽式試験では規定圧
力まで水槽内のガス容器内を水圧で加圧し、規定
圧力を30秒間保持してその後に全膨脹量を測定す
るのであるが、ガス容器に微小な腐蝕孔がある場
合にも膨張計の異常や圧力計における圧力降下な
どは発見できないのが通常であり、微小な腐蝕孔
があるにもかかわらず、合格容器として処理され
てしまうことが多々あると考えられる。規定圧力
の保持時間をたとえば５分間というように長くす
れば欠陥容器の発見も可能であると考えられる
が、これでは作業性の点で問題が残る。 Incidentally, in recent years, many household gas containers with an internal volume of less than 120 mm have been manufactured for many years, and gas leaks from corrosion holes due to rust formation often cause accidents. Therefore, it is desirable to discover the presence or absence of corrosion holes at the testing stage. However, in the water tank test, the gas container inside the water tank is pressurized to a specified pressure using water pressure, the specified pressure is held for 30 seconds, and then the total expansion is measured, but if there are minute corrosion holes in the gas container. Normally, abnormalities in dilatometers or pressure drops in pressure gauges cannot be detected, and it is thought that there are many cases in which containers are disposed of as acceptable despite the presence of minute corrosion holes. It may be possible to detect defective containers by increasing the holding time of the specified pressure to, for example, 5 minutes, but this still poses a problem in terms of workability.
ここにおいて前述の非水槽式試験の利点である
ところの加圧しながらガス容器を目視検査できる
ことがクローズアツプされる。規定圧力まで加圧
して30秒間その圧力を保持している間にガス容器
を転倒させて腐蝕孔の発生しやすい個所を重点的
に目視検査できることは、微小な腐蝕孔の存在の
発見に大きく寄与することになるわけである。非
水槽式試験における残る問題であるところの誤測
定の原因となるエアポケツトがガス容器内に生じ
ているかどうかさえつかめれば、非水槽式試験の
方が耐圧試験として好ましいものとなつているの
である。 Here, the advantage of the above-mentioned non-water tank test is that the gas container can be visually inspected while being pressurized. The ability to pressurize to a specified pressure and hold the pressure for 30 seconds while inverting the gas container to visually inspect areas where corrosion holes are most likely to occur greatly contributes to discovering the presence of minute corrosion holes. That's what I have to do. As long as it is possible to determine whether there are air pockets in the gas container that can cause erroneous measurements, which is a problem with non-water tank tests, non-water tank tests are preferred as pressure tests. .
本発明は上記の点に鑑み為されたものであり、
その目的とするところはガス容器内のエアポケツ
トの有無が試験操作の早期に発見でき、正確な耐
圧試験を行なうことができるガス容器の非水槽式
耐圧試験法を提供するにある。
The present invention has been made in view of the above points,
The purpose is to provide a non-water tank pressure test method for gas containers that allows the presence or absence of air pockets in gas containers to be detected early in the test operation and allows accurate pressure tests to be performed.
本発明はガス容器を満水させた後、微小量の水
をガス容器内に圧送してガス容器内の圧力上昇を
監視し、しかる後にガス容器内の圧力を規定の試
験圧力まで昇圧して耐圧検査を行なうことを特徴
とするものであり、微小量の水を圧送した時点で
ガス容器内の圧力上省が圧送水量に応じた値とな
つておらなければ、ガス容器には腐蝕孔が存在す
るかガス容器内エアポケツトが生じているかであ
り、ガス容器の目視検査と併せて腐蝕孔の存在を
発見することができるとともにエアポケツトの存
在による誤つた試験結果を得ることがなくなるも
のである。
In the present invention, after a gas container is filled with water, a minute amount of water is pumped into the gas container, the pressure rise inside the gas container is monitored, and the pressure inside the gas container is then increased to a specified test pressure to withstand pressure. It is characterized by an inspection, and if the pressure inside the gas container does not correspond to the amount of water being pumped when a minute amount of water is pumped, it is determined that there is a corrosion hole in the gas container. In addition to visually inspecting the gas container, it is possible to discover the presence of corrosion holes and avoid obtaining erroneous test results due to the presence of air pockets.
図示の装置に基いて本発明を詳述すると、図中
１はガス容器、２は圧力計、３は加圧ポンプ、４
はビユーレツト管、５は温度計であり、ビユーレ
ツト管４は給水弁６を介して水道に接続されると
ともに加圧ポンプ３と圧力計２と三方弁７を介し
てガス容器１に接続され、更に圧力計２とビユー
レツト管４との間が戻し弁９を備えた配管で接続
されている。８はエア抜きバルブである。そして
圧力計２にはたとえば検出圧力が２Kg／cm3といつ
た耐圧試験圧力よりもかなり低い圧力で接点を閉
じる圧力スイツチPSが設けられており、またビ
ユーレツト管４にはフオトカプラーなどで構成さ
れた複数個の水量検出スイツチS1，S2，S3が取付
けられている。これらの水量検出スイツチS1，
S2，S3は試験するガス容器１の内容積に応じて切
換えて使用されるものであつて、いずれもガス容
器１の内容積のたとえば0.01％c.c.、つまりは10K
ガス容器１については2.4c.c.、20Kガス容器１に
ついては4.8c.c.、50Kガス容器１については12.0c.c.
の水量に夫々対応するものとなつている。 The present invention will be described in detail based on the illustrated apparatus. In the figure, 1 is a gas container, 2 is a pressure gauge, 3 is a pressure pump, and 4 is a gas container.
is a biuret pipe, 5 is a thermometer, the biuret pipe 4 is connected to the water supply via a water supply valve 6, and is also connected to the gas container 1 via a pressure pump 3, a pressure gauge 2, and a three-way valve 7; The pressure gauge 2 and the pressure pipe 4 are connected by a pipe provided with a return valve 9. 8 is an air release valve. The pressure gauge 2 is equipped with a pressure switch PS that closes the contacts at a detection pressure of, for example, 2 kg/cm 3 , which is considerably lower than the pressure test pressure. A plurality of water quantity detection switches S 1 , S 2 , and S 3 are installed. These water quantity detection switches S 1 ,
S 2 and S 3 are used by switching according to the internal volume of the gas container 1 to be tested, and both are used, for example, 0.01% cc of the internal volume of the gas container 1, that is, 10K.
2.4cc for gas container 1, 4.8cc for 20K gas container 1, 12.0cc for 50K gas container 1
It is designed to correspond to the amount of water in each area.
第３図は概略の電気回路を示すものであり、
SW1，SW2，SW3はいずれか１つのみをオンとで
きる切換えスイツチ、X0〜X3はリレー、Bzは警
報装置、PB1はメインスイツチ、PB2はオフスイ
ツチである。リレーX3の接点は、加圧ポンプ３
の駆動用の圧縮空気回路中の電磁弁（図示せず）
の制御回路中に挿入されている。 Figure 3 shows a schematic electrical circuit.
SW 1 , SW 2 , and SW 3 are changeover switches that can turn on only one of them, X 0 to X 3 are relays, Bz is an alarm device, PB 1 is a main switch, and PB 2 is an off switch. The contact of relay X 3 is pressurized pump 3
Solenoid valve (not shown) in the compressed air circuit for driving the
is inserted into the control circuit of
耐圧試験を行なうにあたつては、三方弁７を通
じてガス容器１内に注水してガス容器１内の満水
検知後も更に10秒間ほど注水を継続させ、この後
に三方弁７を切り換える。同様にビユーレツト管
４にも給水弁６を通じて注水して、オーバーフロ
ーさせた後に給水弁６を閉める。次いで戻し弁９
及びエア抜き弁８を閉じ、加圧ポンプ３を駆動さ
せるのである。この時、メインスイツチPB1とリ
レーX0によつて通電されている第３図に示す回
路においては、試験を行なうガス容器１の内容積
に応じて切換えスイツチSW1〜SW3を切換えてお
く。さて、加圧ポンプ３によつてビユーレツト管
４内の水がガス容器１内に圧送されるわけである
が、前述のようにガス容器１の内容積の0.01％c.c.
の水がビユーレツト管４より送り出されると、両
容積に対応した水量検出スイツチS1〜S3が作動す
る。ところで満水状態にあるガス容器１に更に内
容積の0.01％c.c.の水を圧送すれば、圧力が２Kg／
cm2に上昇するはずであり、従つて水量検出スイツ
チS1〜S3によつてリレーX1が作動してその常開
接点を閉じる以前に圧力スイツチPSのオンでリ
レーX2がその常閉接点を開いておれば、警報装
置Bzは作動せず、またリレーX3も作動しない。
ところが、ガス容器１内にエアポケツトが生じて
いたり、ガス容器１に腐蝕孔があいておれば、リ
レーX1が動作する時点に至つても圧力スイツチ
PSは動作せず、従つてリレーX1の常開接点及び
リレーX2の常閉接点とを通じて警報装置Bz及び
リレーX3に電流が流れてこれらが作動し、警報
が発せられると同時にリレーX3の接点の動作に
よつて加圧ポンプ３が停止される。この場合には
今一度ガス容器１内のエア抜きを行なつてから再
度同じ動作を繰り返す。それでもなお警報装置
Bzが作動するのであれば、このガス容器１は腐
蝕孔が、それも比較的大きいものがあると判断す
ることができる。警報装置Bzが作動しなけれ
ば、加圧ポンプ３によるビユーレツト管４内の水
の圧送を続行し、規定の試験圧力、たとえば31
Kg／cm2まで昇圧する。この圧力は30秒間保持し、
この間にガス容器１を転倒させ、底部の目視によ
る腐蝕孔の有無の検査を行なうのである。このガ
ス容器１の目視検査のために、ガス容器１は第２
図に示すような架台１０に載せて試験を行なうと
良い。この架台１０はベース１１と、ベース１１
に回動自在に取付けられた回転台１２とから構成
され、回転台１２はガス容器１の取付部１３とバ
ランスウエイト１４とを有していて、ガス容器１
に配管を接続したまま回転台１１の回動でガス容
器１の底部が目の高さ位置にくるようにガス容器
１を傾むけられるようにしているものである。上
記30秒間の圧力保持期間中に、圧力計の指示値が
下がらず、また目視検査でも腐蝕孔を発見できな
ければ、腐蝕孔がないと判定されるわけである。
これと同等に、ガス容器１の内容積と圧入水量等
とからガス容器１の膨張量の計算がなされて耐圧
試験の結果が得られる。ちなみにこの計算式は下
記の通りである。 In carrying out the pressure test, water is injected into the gas container 1 through the three-way valve 7, and the water injection is continued for about 10 seconds even after the gas container 1 is detected to be full of water, after which the three-way valve 7 is switched. Similarly, water is injected into the brew pipe 4 through the water supply valve 6, and after overflowing, the water supply valve 6 is closed. Then return valve 9
Then, the air bleed valve 8 is closed and the pressurizing pump 3 is driven. At this time, in the circuit shown in FIG. 3 which is energized by main switch PB 1 and relay X 0 , changeover switches SW 1 to SW 3 are switched according to the internal volume of gas container 1 to be tested. . Now, the pressure pump 3 pumps the water in the filter tube 4 into the gas container 1, and as mentioned above, the water is 0.01% cc of the internal volume of the gas container 1.
When water is sent out from the brewet pipe 4, water amount detection switches S1 to S3 corresponding to both volumes are activated. By the way, if 0.01% cc of water is further pumped into the gas container 1 which is full of water, the pressure will be 2 kg/
cm 2 and therefore, before the water level detection switches S 1 to S 3 activate relay X 1 to close its normally open contacts, pressure switch PS is turned on and relay X 2 closes its normally open contacts If the contacts are open, alarm device Bz will not operate and relay X 3 will not operate.
However, if there is an air pocket in the gas container 1 or if there is a corrosion hole in the gas container 1, the pressure switch will not work even when relay X 1 is activated.
PS does not operate, so current flows through the normally open contact of relay X 1 and the normally closed contact of relay X 2 to alarm device Bz and relay Pressure pump 3 is stopped by the operation of contact point 3 . In this case, air is removed from the gas container 1 once again, and the same operation is repeated again. Alarm device still
If Bz operates, it can be determined that this gas container 1 has corrosion holes, which are relatively large. If the alarm device Bz does not operate, the pressurizing pump 3 continues to pump water in the brewet pipe 4 until the specified test pressure, for example 31
Increase the pressure to Kg/ cm2 . Hold this pressure for 30 seconds,
During this time, the gas container 1 is turned over and the bottom is visually inspected for the presence of corrosion holes. For this visual inspection of the gas container 1, the gas container 1 is
It is preferable to perform the test by placing it on a pedestal 10 as shown in the figure. This frame 10 includes a base 11 and a base 11.
The rotating table 12 has a mounting part 13 for the gas container 1 and a balance weight 14.
The gas container 1 can be tilted so that the bottom of the gas container 1 is at eye level by rotating the turntable 11 while the piping is connected to the gas container 1. If the reading on the pressure gauge does not drop during the 30-second pressure holding period, and if no corrosion holes are found by visual inspection, it is determined that there are no corrosion holes.
Equivalently, the expansion amount of the gas container 1 is calculated from the internal volume of the gas container 1, the amount of water injected, etc., and the result of the pressure test is obtained. By the way, the calculation formula is as follows.
ΔＶ＝（Ａ−Ｗ）
−｛（Ａ−Ｗ）＋Ｖ｝Ｐ／１．０３３βｔ
ΔＶ＝全膨張量、Ｖ…内容積、Ａ…圧力Ｐにお
けるビユーレツト管での水降下量で示す圧入水量
（c.c.）、Ｗ…加圧Ｐにおいて加圧ポンプからガス容
器の入口までの連結管に圧入された水量（c.c.）、
βｔ…温度ｔ℃における水の圧縮係数（Amagat
氏による圧縮係数を示す表による。０〜100atm
にて20℃で0.0000468である）
ガス容器１内にエアポケツトがあれば、上記Ａ
値がかなり大きくなり、正しいＡ値の測定を行な
えないわけである。尚、このＡ値は差圧伝送器に
てコンピユーターにインプツトされ、ΔＶの算出
が行なわれる。またこの間に、ガス容器１の記号
番号、内容積、製造年月日、元の質量等をキーイ
ンしておく。 ΔV=(A-W) −{(A-W)+V}P/1.033βt ΔV=total expansion amount, V...inner volume, A...injection water amount (cc ), W...Amount of water (cc) pressurized into the connecting pipe from the pressure pump to the inlet of the gas container at pressurization P,
βt... Compressibility coefficient of water at temperature t℃ (Amagat
According to a table showing compression factors by Mr. 0~100atm
(0.0000468 at 20℃) If there is an air pocket in the gas container 1, the above A
The value becomes quite large, making it impossible to measure the A value correctly. Note that this A value is input to a computer using a differential pressure transmitter, and ΔV is calculated. Also, during this time, key in the symbol number, internal volume, date of manufacture, original mass, etc. of the gas container 1.
以上のように本発明にあつては目視検査を行な
える点で腐蝕孔の発見が容易であり、また耐圧試
験の開始早期に、ガス容器内のエアポケツトの有
無或いは腐蝕孔の存在が容易に判別できるもので
ある。
As described above, in the present invention, corrosion holes can be easily discovered because visual inspection can be performed, and the presence or absence of air pockets in the gas container or the presence of corrosion holes can be easily determined at an early stage of the pressure test. It is possible.
第１図は本発明に係る装置の配管図、第２図
ａ，ｂは同上に用いる架台の正面図及び側面図、
第３図は同上の電気回路図であり、１はガス容
器、２は圧力計、３は加圧ポンプ、４はビユーレ
ツト管、S1〜S3は水量検出スイツチ、PSは圧力
スイツチ、X0〜X3はリレー、Bzは警報装置を示
す。
Figure 1 is a piping diagram of the device according to the present invention, Figures 2 a and b are front and side views of the pedestal used for the same,
Figure 3 is the same electric circuit diagram as above, where 1 is a gas container, 2 is a pressure gauge, 3 is a pressurizing pump, 4 is a burette pipe, S 1 to S 3 are water flow detection switches, PS is a pressure switch, and X 0 ~X 3 indicates relay, Bz indicates alarm device.
Claims (1)
ス容器内に圧送してガス容器内の圧力上昇を監視
し、しかる後にガス容器内の圧力を規定の試験圧
力まで昇圧して耐圧検査を行なうことを特徴とす
るガス容器の非水槽式耐圧試験法。1 After filling the gas container with water, a minute amount of water is pumped into the gas container to monitor the rise in pressure inside the gas container, and then the pressure inside the gas container is increased to the specified test pressure for a pressure test. A non-water tank pressure test method for gas containers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP494083A JPS59131145A (en) | 1983-01-14 | 1983-01-14 | No-water-tank type pressure proof testing method of gas container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP494083A JPS59131145A (en) | 1983-01-14 | 1983-01-14 | No-water-tank type pressure proof testing method of gas container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59131145A JPS59131145A (en) | 1984-07-27 |
| JPS6251410B2 true JPS6251410B2 (en) | 1987-10-29 |
Family
ID=11597567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP494083A Granted JPS59131145A (en) | 1983-01-14 | 1983-01-14 | No-water-tank type pressure proof testing method of gas container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59131145A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117606946B (en) * | 2024-01-24 | 2024-03-26 | 中铁开发投资集团有限公司 | Blasting data testing system |
-
1983
- 1983-01-14 JP JP494083A patent/JPS59131145A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59131145A (en) | 1984-07-27 |
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