JPH08184523A - Method for checking multiple isolation valve system - Google Patents
Method for checking multiple isolation valve systemInfo
- Publication number
- JPH08184523A JPH08184523A JP6338797A JP33879794A JPH08184523A JP H08184523 A JPH08184523 A JP H08184523A JP 6338797 A JP6338797 A JP 6338797A JP 33879794 A JP33879794 A JP 33879794A JP H08184523 A JPH08184523 A JP H08184523A
- Authority
- JP
- Japan
- Prior art keywords
- shutoff valve
- valves
- shutoff
- valve
- shut
- 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.)
- Pending
Links
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Examining Or Testing Airtightness (AREA)
- Details Of Valves (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、流体流路の開閉操作
を行うに際して、並列的に制御が行われる遮断弁装置の
チェック方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for checking shutoff valve devices which are controlled in parallel when opening and closing a fluid flow path.
【０００２】[0002]
【従来の技術】一般に燃料配管、特にガス燃料配管に
は、安全対策上、配管に対して直列に２個の遮断弁を設
けることが義務付けられている。このような２重の遮断
弁を用いたものにおいて、開閉制御は単に開閉器の同一
接点によって同時に開閉制御されるのみである。従っ
て、一つの遮断弁が洩れ等の故障を生じていても一方の
遮断弁が正常である限り、外見的には燃料洩れを生じる
ことが無い。しかし、残りの遮断弁に不具合が生じた時
点で、初めて両方の遮断弁の不具合を知ることになる。
即ち、２重の遮断弁によって２重に延命しているもので
あり、両者が故障した場合には燃料の遮断を行うことが
できなくなる。2. Description of the Related Art Generally, fuel pipes, particularly gas fuel pipes, are obliged to provide two shutoff valves in series with the pipes for safety reasons. In the case of using such a double shutoff valve, the opening / closing control is simply controlled simultaneously by the same contact of the switch. Therefore, even if one shut-off valve has a failure such as a leak, as long as one shut-off valve is normal, fuel leakage does not occur in appearance. However, when the remaining shut-off valves are defective, the malfunction of both shut-off valves is known.
That is, the life is doubled by the double cutoff valve, and if both fail, the fuel cannot be cut off.
【０００３】[0003]
【発明が解決しようとする課題】上述の点に鑑み、この
発明は、複数の遮断弁を直列的に接続してなる多重遮断
弁装置において、各遮断弁の故障を独立して検出できる
多重遮断弁装置のチェック方法を提供することである。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention is a multiple cutoff valve device in which a plurality of cutoff valves are connected in series, and a multiple cutoff can independently detect a failure of each cutoff valve. A method for checking a valve device is provided.
【０００４】[0004]
【課題を解決するための手段】この発明は、上述の課題
を解決するためになされたもので、配管中に直列的に接
続された２個以上の遮断弁と、各遮断弁を独立して制御
する制御手段と、前記配管の前記遮断弁よりも下流側に
おいて流体の漏れを検出する検出手段とを備え、前記制
御手段は、前記各遮断弁の閉鎖タイミングを個別に設定
して時間差を設けて閉鎖し、前記検出手段により配管下
流の漏れを検出することにより、各遮断弁の漏れを検出
するようにした多重遮断弁装置のチェック方法である。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and two or more shutoff valves connected in series in a pipe and each shutoff valve independently. Control means for controlling and detection means for detecting fluid leakage downstream of the shutoff valve in the pipe are provided, and the control means sets the closing timing of each shutoff valve individually to provide a time difference. It is a method for checking a multiple shutoff valve device, wherein the shutoff valve is closed and the leak of each shutoff valve is detected by detecting the leak in the downstream of the pipe by the detection means.
【０００５】[0005]
【作用】この発明に係る多重遮断弁装置のチェック方法
によれば、配管(1) 中に直列的に接続された２個以上の
遮断弁(2a),(2b),‥‥を、制御手段(3) によって各遮断
弁(2a),(2b),‥‥の閉鎖タイミングに時間差を設けて開
閉操作することにより、少なくとも１つの遮断弁が閉鎖
状態に切替わっている時期を形成し、前記の配管(1) の
下流側に接続した流体の漏れの検出手段(4) によって、
前記閉鎖状態の遮断弁(2a),(2b),‥‥からの流体の漏れ
を検出することにより、閉鎖状態の遮断弁に漏れが生じ
ているかどうかを検出する。According to the method for checking a multiple shutoff valve device according to the present invention, the control means for controlling two or more shutoff valves (2a), (2b), ... Connected in series in the pipe (1). By opening and closing the shutoff valves (2a), (2b), ... with a time lag by (3), the time when at least one shutoff valve is switched to the closed state is formed. By means of fluid leakage detection means (4) connected to the downstream side of the pipe (1) of
By detecting the leakage of the fluid from the shutoff valves (2a), (2b), ... In the closed state, it is detected whether or not the shutoff valve in the closed state is leaking.
【０００６】[0006]
【実施例】以下、この発明の具体的実施例を図面に基づ
いて詳細に説明する。図１はこの発明に係る多重遮断弁
装置のチェック方法の具体的適用例の一つを示す配線図
であり、図２は、遮断弁のチェックを行うための制御チ
ャートである。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a wiring diagram showing one specific application example of the method for checking a multiple shutoff valve device according to the present invention, and FIG. 2 is a control chart for checking the shutoff valve.
【０００７】図１に示す実施例においては、１本の配管
(1) 中に２個の遮断弁(2a)(2b)を直列に接続した構成と
なっている。前記各遮断弁(2a),(2b)は、制御手段(3)
の２個のリレー(3a),(3b)の切替え操作により独立して
開閉制御可能に構成されている。また、各遮断弁(2a),
(2b) の閉鎖タイミングは、図２に示すように適宜の時
間差Δｔを設けてあり、各遮断弁(2a),(2b) の閉鎖順序
は、前記遮断弁(2a),(2b)を閉鎖する必要がある度に交
互に順番を変えて行う。尚、図２に示す制御チャートで
は、２つの遮断弁(2a),(2b) のうち、先に閉鎖する遮断
弁を「第１遮断弁」、所定時間Δｔ遅れて閉鎖する遮断
弁を「第２遮断弁」として記載してある。In the embodiment shown in FIG. 1, one pipe
It has a configuration in which two shut-off valves (2a) and (2b) are connected in series in (1). The shutoff valves (2a), (2b) are control means (3).
The switching operation of the two relays (3a) and (3b) can independently control opening and closing. In addition, each shutoff valve (2a),
The closing timing of (2b) is provided with an appropriate time difference Δt as shown in FIG. 2, and the shutoff valves (2a) and (2b) are closed in the order of closing the shutoff valves (2a) and (2b). Repeat the order every time you need to. In the control chart shown in FIG. 2, of the two shutoff valves (2a) and (2b), the shutoff valve that is closed first is the "first shutoff valve", and the shutoff valve that is closed after a predetermined time Δt is the "first shutoff valve". 2 shutoff valve ".
【０００８】前記の配管(1) の遮断弁(2a),(2b) よりも
下流側には、流体の漏れを検出する検出手段(4) を設け
てある。この検出手段(4) としては、流体の流量を検出
する流量計や、流れの有無を検出するフロースイッチ等
を用いるが、この実施例においては、前述同様の燃料系
統の配管としてあるので、前記配管(1) の下流端に接続
した燃焼装置における燃焼火炎の検出装置を用いること
ができる。即ち、燃料配管においては、前記遮断弁(2
a),(2b) に閉鎖信号を出力したとしても、遮断弁(2a),
(2b) に漏れが生じていると、燃焼装置の火炎が消えな
いため、この火炎の有無を監視することにより、燃料と
しての流体の漏れを検出できる。A detection means (4) for detecting fluid leakage is provided downstream of the shutoff valves (2a), (2b) of the pipe (1). As the detection means (4), a flow meter for detecting the flow rate of the fluid, a flow switch for detecting the presence or absence of the flow, etc. are used, but in this embodiment, since it is a pipe of the fuel system similar to the above, A combustion flame detection device in a combustion device connected to the downstream end of the pipe (1) can be used. That is, in the fuel pipe, the shutoff valve (2
Even if a closing signal is output to a) and (2b), the shutoff valve (2a),
If a leak occurs in (2b), the flame of the combustion device is not extinguished. Therefore, by monitoring the presence or absence of this flame, it is possible to detect the leak of fluid as fuel.
【０００９】以上の構成において、配管(1) を遮断する
に際しては、先ず、制御手段(3) は、配管(1) の上流側
に位置する遮断弁(2a)を閉鎖させるべくリレー(3a)を切
替え操作する。この時点では、下流側に位置する遮断弁
(2b)は開状態にあるが、配管(1) 全体としては、前記上
流側の遮断弁(2a)によって流体の流通を遮断する状態に
ある。この状態で、前記検出手段(4) により流体の流通
の有無を監視し、この状態で流体の流通が検知されれ
ば、前記上流側の遮断弁(2a)に故障が生じていると判断
する。In the above structure, when shutting off the pipe (1), first, the control means (3) relays (3a) the relay (3a) to close the shutoff valve (2a) located on the upstream side of the pipe (1). Switch operation. At this point, the shutoff valve located downstream
Although (2b) is in an open state, the pipe (1) as a whole is in a state in which the circulation of the fluid is shut off by the shutoff valve (2a) on the upstream side. In this state, the presence or absence of fluid flow is monitored by the detection means (4), and if fluid flow is detected in this state, it is determined that the upstream shutoff valve (2a) has a failure. .
【００１０】そして、制御手段(3) は所定時間Δｔ遅れ
て下流側に位置する遮断弁(2b)を閉鎖させるべくリレー
(3b)を切替え操作するが、この際も前記同様に、前記検
出手段(4) により流体の流通の有無を監視する。この下
流側に位置する遮断弁(2b)を閉鎖状態に切替え操作する
前後において、前記上流側の遮断弁(2a)に起因する漏れ
の検出が継続している場合には、この下流側の遮断弁(2
b)にも故障などにより漏れが生じていると判断し、逆
に、前記上流側の遮断弁(2a)に起因する漏れが検出され
なくなった場合には、この下流側の遮断弁(2b)は、正常
であると判断する。尚、下流側に位置する遮断弁(2b)を
閉鎖状態に切替え操作する前後において、前述の漏れが
検出されない場合には両方の遮断弁(2a),(2b) 共に正常
であると判断する。Then, the control means (3) delays by a predetermined time Δt and relays to close the shutoff valve (2b) located on the downstream side.
The switching operation of (3b) is performed, and at this time also, in the same manner as above, the presence / absence of fluid flow is monitored by the detection means (4). Before and after switching the shutoff valve (2b) located on the downstream side to the closed state, if the leakage due to the shutoff valve (2a) on the upstream side is continuously detected, shut down the shutoff valve on the downstream side. Valve (2
If it is determined that there is a leak due to a failure in b) as well, and conversely the leak due to the upstream shutoff valve (2a) is no longer detected, this downstream shutoff valve (2b) Determines that it is normal. It should be noted that both the shutoff valves (2a) and (2b) are judged to be normal when the above-mentioned leakage is not detected before and after the shutoff valve (2b) located on the downstream side is switched to the closed state.
【００１１】更に、次回、前記遮断弁(2a),(2b) を閉鎖
する際には、閉鎖の順番を変更し、下流側の遮断弁(2b)
を先に、上流側の遮断弁(2a)を所定時間遅らせて閉鎖
し、上記同様の漏れの監視を行う。この場合には、先
ず、配管(1) の下流側の遮断弁(2b)に故障が生じている
かどうかを判断し、制御手段(3) による下流側の遮断弁
(2b)の閉鎖操作後、所定時間Δｔ遅れて上流側に位置す
る遮断弁(2a)を閉鎖状態に切替え操作する。そして、こ
の上流側に位置する遮断弁(2a)を閉鎖状態に切替え操作
する前後において、前記下流側の遮断弁(2b)に起因する
漏れの検出が継続している場合には、この上流側の遮断
弁(2a)にも故障などにより漏れが生じていると判断し、
逆に、前記下流側の遮断弁(2b)に起因する漏れが検出さ
れなくなった場合には、この上流側の遮断弁(2a)は、正
常であると判断する。尚、上流側に位置する遮断弁(2a)
を閉鎖状態に切替え操作する前後において、前述の漏れ
が検出されない場合には両方の遮断弁(2a),(2b)共に正
常であると判断する。Further, when closing the shutoff valves (2a) and (2b) next time, the closing order is changed so that the shutoff valves (2b) on the downstream side are changed.
First, the shutoff valve (2a) on the upstream side is closed by delaying for a predetermined time, and the same leak monitoring as described above is performed. In this case, first, it is judged whether or not there is a failure in the shutoff valve (2b) on the downstream side of the pipe (1), and the shutoff valve on the downstream side by the control means (3) is judged.
After the closing operation of (2b), the shutoff valve (2a) located on the upstream side is switched to the closed state with a delay of a predetermined time Δt. Then, before and after switching operation of the shutoff valve (2a) located on the upstream side to the closed state, if the detection of the leakage due to the shutoff valve (2b) on the downstream side continues, the upstream side It was judged that there was a leak in the shutoff valve (2a) of the
On the contrary, when the leakage due to the downstream shutoff valve (2b) is no longer detected, the upstream shutoff valve (2a) is determined to be normal. The shutoff valve (2a) located on the upstream side
Before and after the switching operation to the closed state, if both of the shutoff valves (2a) and (2b) are normal, it is judged that the leakage is normal.
【００１２】以上のように、この発明の構成によると、
２つの遮断弁(2a),(2b) のうちの一方が故障した場合で
あっても、容易に検出することができ、従来のように双
方の遮断弁が故障して初めて分るものより安全性が高
い。しかも、２つの遮断弁(2a),(2b) のうちのどちらが
故障しているかどうかを判断できるため、両方の遮断弁
(2a),(2b) が故障する前に保守を行うことができ、安全
対策上も有利である。As described above, according to the configuration of the present invention,
Even if one of the two shut-off valves (2a) and (2b) fails, it can be easily detected, and is safer than the conventional one where both shut-off valves fail. It is highly likely. Moreover, it is possible to determine which of the two shutoff valves (2a) and (2b) is defective, so
Maintenance can be performed before (2a) and (2b) fails, which is advantageous in terms of safety measures.
【００１３】尚、以上では、配管中に２個の遮断弁を接
続してなる多重遮断弁装置を例示して説明したが、３個
以上の遮断弁を設けてた多重遮断弁装置にも適用でき、
この場合には、少なくとも１個の遮断弁が先に閉鎖する
ように構成することにより、容易に遮断弁の故障を検出
できる。更に、以上の説明においては、燃焼装置におけ
る燃料配管に適用した実施例について説明したが、この
発明においては、このような燃料配管以外であっても一
本の配管中に複数の遮断弁を直列的に接続してなる多重
遮断弁装置において、容易に適用することができる。In the above description, the multiple shut-off valve device in which two shut-off valves are connected in the pipe has been described as an example, but it is also applied to the multiple shut-off valve device provided with three or more shut-off valves. You can
In this case, the failure of the shutoff valve can be easily detected by configuring the at least one shutoff valve to be closed first. Further, in the above description, the embodiment applied to the fuel pipe in the combustion device has been described, but in the present invention, a plurality of shutoff valves are connected in series in one pipe even if other than such a fuel pipe. The present invention can be easily applied to a multiple cutoff valve device that is connected in series.
【００１４】[0014]
【発明の効果】以上説明したように、この発明に係る多
重遮断弁装置のチェック方法によれば、配管中に直列的
に接続された２個以上の遮断弁を各遮断弁の閉鎖タイミ
ングに時間差を設けて開閉し、前記遮断弁の下流側にお
いて前記遮断弁からの流体の漏れを検出することによ
り、現在閉鎖中の遮断弁に漏れが生じているかどうかを
検出する構成であるため、複数個の遮断弁のうちの何れ
が故障した場合であっても、容易に検出することがで
き、従って、全ての遮断弁が故障しなければ故障の発生
を検出できなかった従来の多重遮断弁装置に比べて、安
全性が高い。しかも、複数個の遮断弁のうちの何れが故
障しているかどうかを判断できるため、全ての遮断弁が
故障して遮断機能を失う前に保守・修理を行うことがで
き、安全対策上も有利である。As described above, according to the method for checking a multiple shut-off valve device according to the present invention, two or more shut-off valves connected in series in the pipe have a time difference in closing timing of each shut-off valve. Is provided and opened and closed, and the leakage of the fluid from the shutoff valve is detected on the downstream side of the shutoff valve to detect whether or not the shutoff valve currently closed is leaking. It is possible to easily detect the failure of any one of the shutoff valves described above. Therefore, in the conventional multiple shutoff valve device that cannot detect the occurrence of the failure unless all the shutoff valves fail. Compared to this, it is safer. Moreover, since it can be determined which of the multiple shut-off valves has failed, maintenance and repair can be performed before all shut-off valves fail and lose the shut-off function, which is also advantageous for safety measures. Is.
【図１】この発明に係る多重遮断弁のチェック方法の具
体的適用例の一つを示す配線図である。FIG. 1 is a wiring diagram showing one specific application example of a method for checking a multiple shutoff valve according to the present invention.
【図２】この発明に係る多重遮断弁のチェック方法の一
実施例における遮断弁のチェックを行うための制御チャ
ートである。 (1) … 配管 (2a) … 遮断弁 (2b) … 遮断弁 (3) … 制御手段 (4) … 検出手段（流体の漏れを検出する検出手段）FIG. 2 is a control chart for checking a shutoff valve in an embodiment of a method for checking a multiple shutoff valve according to the present invention. (1) ... Piping (2a) ... Shut-off valve (2b) ... Shut-off valve (3) ... Control means (4) ... Detection means (detection means for detecting fluid leakage)
Claims (1)
上の遮断弁(2a),(2b),‥‥と、各遮断弁(2a),(2b),‥‥
を独立して制御する制御手段(3) と、前記配管(1) の前
記遮断弁(2a),(2b),‥‥よりも下流側において流体の漏
れを検出する検出手段(4) とを備え、前記制御手段(3)
は、前記各遮断弁(2a),(2b),‥‥の閉鎖タイミングを個
別に設定して時間差を設けて閉鎖し、前記検出手段(4)
により配管(1) 下流の漏れを検出することにより、各遮
断弁(2a),(2b),‥‥の漏れを検出するようにしたことを
特徴とする多重遮断弁装置のチェック方法。1. Two or more shut-off valves (2a), (2b), ... connected in series in the pipe (1) and each shut-off valve (2a), (2b), ...
And a detection means (4) for detecting fluid leakage downstream of the shutoff valves (2a), (2b), ... Of the pipe (1). Provided, the control means (3)
Is set by individually setting the closing timing of each of the shutoff valves (2a), (2b), ...
A method for checking a multiple shutoff valve device, characterized in that the leak of each shutoff valve (2a), (2b), ... is detected by detecting a leak downstream of the pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6338797A JPH08184523A (en) | 1994-12-28 | 1994-12-28 | Method for checking multiple isolation valve system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6338797A JPH08184523A (en) | 1994-12-28 | 1994-12-28 | Method for checking multiple isolation valve system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08184523A true JPH08184523A (en) | 1996-07-16 |
Family
ID=18321567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6338797A Pending JPH08184523A (en) | 1994-12-28 | 1994-12-28 | Method for checking multiple isolation valve system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08184523A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003006731A (en) * | 2001-06-20 | 2003-01-10 | Fuji Electric Co Ltd | Water supply valve check device for automatic beverage vending machine |
| JP2009210338A (en) * | 2008-03-03 | 2009-09-17 | Ihi Corp | Automatic valve inspection device, automatic valve inspection method, and automatic valve inspection program |
| JP2010160969A (en) * | 2009-01-08 | 2010-07-22 | Toshiba Corp | Fuel cell power generation system, and inspection method thereof |
| JP2013019621A (en) * | 2011-07-13 | 2013-01-31 | Fuji Koki Corp | Cutoff valve device |
| WO2017018257A1 (en) * | 2015-07-29 | 2017-02-02 | 東京エレクトロン株式会社 | Method for inspecting for leaks in gas supply system valves |
-
1994
- 1994-12-28 JP JP6338797A patent/JPH08184523A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003006731A (en) * | 2001-06-20 | 2003-01-10 | Fuji Electric Co Ltd | Water supply valve check device for automatic beverage vending machine |
| JP2009210338A (en) * | 2008-03-03 | 2009-09-17 | Ihi Corp | Automatic valve inspection device, automatic valve inspection method, and automatic valve inspection program |
| JP2010160969A (en) * | 2009-01-08 | 2010-07-22 | Toshiba Corp | Fuel cell power generation system, and inspection method thereof |
| JP2013019621A (en) * | 2011-07-13 | 2013-01-31 | Fuji Koki Corp | Cutoff valve device |
| WO2017018257A1 (en) * | 2015-07-29 | 2017-02-02 | 東京エレクトロン株式会社 | Method for inspecting for leaks in gas supply system valves |
| JP2017032305A (en) * | 2015-07-29 | 2017-02-09 | 東京エレクトロン株式会社 | Method for inspecting valve leak in gas supply system |
| CN107709953A (en) * | 2015-07-29 | 2018-02-16 | 东京毅力科创株式会社 | The method for checking the valve leakage of gas supply system |
| KR20180030478A (en) * | 2015-07-29 | 2018-03-23 | 도쿄엘렉트론가부시키가이샤 | How to check the leak of valve in gas supply system |
| CN107709953B (en) * | 2015-07-29 | 2019-12-06 | 东京毅力科创株式会社 | Method for checking valve leakage of gas supply system |
| TWI688726B (en) * | 2015-07-29 | 2020-03-21 | 日商東京威力科創股份有限公司 | Inspection method for valve body leakage of gas supply system |
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