JP2003162332A - Method for confirming operation of pressure governing device - Google Patents
Method for confirming operation of pressure governing deviceInfo
- Publication number
- JP2003162332A JP2003162332A JP2001360161A JP2001360161A JP2003162332A JP 2003162332 A JP2003162332 A JP 2003162332A JP 2001360161 A JP2001360161 A JP 2001360161A JP 2001360161 A JP2001360161 A JP 2001360161A JP 2003162332 A JP2003162332 A JP 2003162332A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- valve
- gas
- section
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、上流側管路から下流側
管路へ送出するガスの圧力を調整する調整弁部、およ
び、下流側管路のガスの圧力が所定の設定圧力値以上に
なると作動する遮断弁部を備えた整圧装置の作動確認方
法に係り、特に遮断弁部の作動を確認するための整圧装
置の作動確認方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adjusting valve portion for adjusting the pressure of gas sent from an upstream pipe line to a downstream pipe line, and a gas pressure in the downstream pipe line is a predetermined set pressure value or more. The present invention relates to a method for confirming the operation of a pressure regulating device having a shut-off valve portion that operates in such a case, and particularly to a method for confirming the operation of a pressure regulating device for confirming the operation of the shut-off valve portion.
【０００２】[0002]
【従来の技術】整圧装置は、上流側管路のガスの圧力変
動や負荷流量に関係なく、下流側管路内のガスの圧力を
所定の圧力値となるように調整するものである。2. Description of the Related Art A pressure regulator adjusts the pressure of a gas in a downstream pipe line to a predetermined pressure value irrespective of the pressure fluctuation of the gas in the upstream pipe line and the load flow rate.
【０００３】整圧装置では、通常、圧力感知部において
感知された圧力を基に、調整弁部によって上流側管路か
ら下流側管路へ送出するガスの圧力が調整される。一
方、圧力感知部において所定の設定圧力値以上の圧力が
感知されると、遮断弁部が作動し、上流側管路からのガ
スが遮断される。なお、下流側管路のガスの圧力が設定
圧力値より低くなると、遮断弁部で遮断した状態から遮
断していない状態への復帰は自動的に行われ、調整弁部
に切り替わる。In the pressure regulating device, the pressure of the gas sent from the upstream side pipeline to the downstream side pipeline is usually adjusted by the adjusting valve section based on the pressure sensed by the pressure sensing section. On the other hand, when the pressure sensing unit senses a pressure equal to or higher than a predetermined set pressure value, the shutoff valve unit operates and shuts off the gas from the upstream pipe line. When the pressure of the gas in the downstream pipe line becomes lower than the set pressure value, the shut-off valve section automatically returns to the non-shut-off state and switches to the regulating valve section.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、このよ
うな整圧装置では、整圧装置の作動状態、特に下流側管
路で異常昇圧が生じて遮断弁部が作動した場合、この遮
断弁部の閉止を確認することができない。そのため、別
途、特別な補助装置を用いなければいけないという問題
があった。However, in such a pressure regulating device, when the pressure regulating device operates, particularly when the shut-off valve portion operates due to abnormal pressure increase in the downstream side pipe line, the shut-off valve portion is operated. Cannot confirm closure. Therefore, there is a problem that a special auxiliary device has to be used separately.
【０００５】本発明はかかる問題点に鑑みてなされたも
ので、その目的は、設置現場において特別な補助装置な
どを必要とせずに、遮断弁部の状態を簡単に点検するこ
とが可能となる整圧装置の作動確認方法を提供すること
にある。The present invention has been made in view of the above problems, and it is an object of the present invention to easily check the state of the shut-off valve section without requiring any special auxiliary device at the installation site. It is to provide a method for confirming the operation of the pressure regulating device.
【０００６】[0006]
【課題を解決するための手段】本発明による整圧装置の
作動確認方法は、入口側が上流側管路と接続され、出口
側が下流側管路に接続される流路の出口側のガスの圧力
をメインダイヤフラムによって感知し、この感知した圧
力を基に、駆動部を介して上流側管路から下流側管路へ
送出するガスの圧力を第１の設定圧力値となるように調
整する調整弁部と、前記調整弁部の上方に調整ばねを介
して設けられ、下流側管路のガスの圧力が前記第１の設
定圧力より大きな第２の設定圧力値以上になると、前記
調整弁部に替わり作動し、前記第２の設定圧力値より小
さくなると、遮断した状態から遮断していない状態への
復帰を自動的に行う遮断弁部と、前記調整弁部の下端と
連動部を介して連動し、前記流路の入口側のガスの圧力
を感知するバランスダイヤフラムと、前記バランスダイ
ヤフラムを支持すると共に第１のねじ部を有する支持部
とを備えた整圧装置の前記遮断弁部の作動を確認するた
めの方法であって、前記支持部の第１のねじ部に螺合可
能な第２のねじ部を有する治具を用い、前記第２のねじ
部と第１のねじ部とを螺合させるに伴って前記連動部を
押し上げることによって、前記調整弁部を強制的に開く
と共に、前記調整弁部が開いたままの状態で上流側管路
のガスの圧力を変化させて下流側管路のガスの圧力の上
昇の有無を調べることにより、上流側管路のガスの圧力
に対する遮断弁部の作動状態を確認するものである。According to the method for confirming the operation of a pressure regulating device according to the present invention, the gas pressure at the outlet side of a flow path in which the inlet side is connected to the upstream side pipeline and the outlet side is connected to the downstream side pipeline. Is detected by the main diaphragm, and the pressure of the gas sent from the upstream side pipeline to the downstream side pipeline via the drive unit is adjusted based on the sensed pressure so that the pressure becomes the first set pressure value. Section and an adjusting spring provided above the adjusting valve section, and when the pressure of the gas in the downstream pipe line becomes equal to or higher than a second set pressure value larger than the first set pressure, the adjusting valve section is provided. Alternately actuated and when it becomes smaller than the second set pressure value, the shut-off valve portion that automatically returns from the shut-off state to the non-shut-off state is interlocked with the lower end of the adjustment valve portion via the interlocking portion. A balun that senses the pressure of the gas at the inlet side of the flow path. A method for confirming the operation of the shut-off valve portion of a pressure regulating device comprising a diaphragm and a support portion that supports the balance diaphragm and has a first screw portion, the method comprising: By using a jig having a second screw part that can be screwed into the screw part and pushing up the interlocking part as the second screw part and the first screw part are screwed together, the adjusting valve The pressure of the gas in the upstream pipe line while checking the presence of an increase in the gas pressure in the downstream pipe line while forcibly opening the valve part and keeping the adjustment valve part open. The operation state of the shut-off valve portion with respect to the gas pressure in the pipeline is confirmed.
【０００７】この整圧装置の作動確認方法では、本体部
の底部の蓋部と実質的に同じ形状の治具を用いることに
より、遮断弁部の状態が容易に確認される。In this method for confirming the operation of the pressure regulating device, the state of the shutoff valve portion can be easily confirmed by using a jig having substantially the same shape as the lid portion at the bottom of the main body portion.
【０００８】[0008]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.
【０００９】図１は、本発明の一実施の形態に係る整圧
装置１０の概略断面構成を表すものである。この整圧装
置１０は、互いに隔てられた上流側管路１１と下流側管
路１２との境界に設けられるものである。FIG. 1 shows a schematic sectional structure of a pressure regulating device 10 according to an embodiment of the present invention. The pressure regulating device 10 is provided at a boundary between an upstream side pipeline 11 and a downstream side pipeline 12 which are separated from each other.
【００１０】整圧装置１０は、本体部２１の中にガスの
流路２２を有している。この流路２２は、入口２２ａが
フランジ２２Ａ，１１Ｂ同士が連結されることにより上
流側管路１１に接続され、出口２２ｂがフランジ部２２
Ｂ，１２Ａ同士が連結されることにより下流側管路１２
に接続されると共に、出口２２ｂ側に狭管部２２Ｃを有
している。流路２２には、入口２２ａ側と出口２２ｂ側
との間に仕切部２３Ａ，２３Ｂが設けられている。この
仕切部２３Ａ，２３Ｂの間には、空洞を有する筒体部２
４が配設されている。筒体部２４の側面には金網等から
なる筒状ストレーナ２５の一端が接続され、その他端は
本体部２１の底部と接続されている。筒体部２４の内部
には弁部３０が設けられている。この弁部３０は、下流
側管路１２へ送出されるガスの圧力を設定圧力値Ｐ
1 （第１の設定圧力値）となるように調整し、下流側管
路１２のガスの圧力がＰ1 より大きな設定圧力値Ｐ
2 （第２の設定圧力値）以上になると上流側管路１１か
らのガスを遮断する機能を有するものである。弁部３０
の上方には、この弁部３０を駆動するための駆動部４０
と、この駆動部４０を制御するための圧力感知部５０と
が設けられている。一方、弁部３０と本体部２１の底部
との間には、補助制御部６０が設けられている。本体部
２１の底部には、補助制御部６０の外側に設けられた雄
ねじ部２１Ａにねじ込むことによりキャップ部２１Ｂが
取り付けられる。なお、雄ねじ部２１Ａは本発明の「第
１のねじ部」の一具体例に対応している。The pressure regulating device 10 has a gas passage 22 in a main body 21. In the flow path 22, the inlet 22a is connected to the upstream pipe line 11 by connecting the flanges 22A and 11B to each other, and the outlet 22b is connected to the flange portion 22.
By connecting B and 12A to each other, the downstream pipe line 12
And has a narrow tube portion 22C on the outlet 22b side. The flow path 22 is provided with partition portions 23A and 23B between the inlet 22a side and the outlet 22b side. A cylindrical body portion 2 having a cavity between the partition portions 23A and 23B.
4 are provided. One end of a cylindrical strainer 25 made of wire mesh or the like is connected to the side surface of the cylindrical body portion 24, and the other end is connected to the bottom portion of the main body portion 21. A valve portion 30 is provided inside the tubular portion 24. The valve unit 30 sets the pressure of the gas delivered to the downstream side pipeline 12 to the set pressure value P.
1 (first set pressure value) so that the pressure of the gas in the downstream side pipeline 12 is larger than P 1
It has a function of shutting off the gas from the upstream side pipe line 11 when the pressure exceeds 2 (second set pressure value). Valve part 30
Above the above, a drive unit 40 for driving the valve unit 30 is provided.
And a pressure sensing unit 50 for controlling the drive unit 40. On the other hand, an auxiliary control unit 60 is provided between the valve unit 30 and the bottom of the main body unit 21. A cap portion 21B is attached to the bottom portion of the main body portion 21 by screwing it into a male screw portion 21A provided outside the auxiliary control portion 60. The male screw portion 21A corresponds to a specific example of "first screw portion" of the invention.
【００１１】弁部３０は、調整弁部３１および遮断弁部
３２により構成されている。調整弁部３１は、筒体部２
４で仕切部２３Ａ，２３Ｂより下方に設けられる弁座３
１Ａと、駆動部４０に連動され、弁座３１Ａと所定の間
隔をおいて上方に設けられる弁体３１Ｂとにより構成さ
れている。この調整弁部３１は、駆動部４０によって弁
体３１Ｂが上下に駆動され、弁体３１Ｂと弁座３１Ａと
の間隔が調整されて下流側管路１２へのガスの圧力が設
定圧力値Ｐ1 となるように調整するものである。一方、
遮断弁部３２は、筒体部２４で仕切部２３Ａ，２３Ｂよ
り上方に設けられる弁座３２Ａと、駆動部４０に連動さ
れ、弁座３２Ａと所定の間隔をおいて上方に設けられ、
調整弁部３１の上方に調整ばね３３を介して接続される
弁体３２Ｂとにより構成されている。この遮断弁部３２
は、下流側管路１２のガスの圧力が設定圧力値Ｐ2 以上
になると、駆動部４０によって、調整ばね３３が圧縮さ
れることにより、弁体３２Ｂが弁座３２Ａに押し付けら
れて、下流側管路１２へのガスの送出を停止するもので
ある。The valve section 30 is composed of a regulating valve section 31 and a shutoff valve section 32. The regulating valve portion 31 is the tubular body portion 2.
4 is a valve seat 3 provided below the partition portions 23A and 23B.
1A, and a valve body 31B which is interlocked with the drive unit 40 and is provided above the valve seat 31A at a predetermined interval. In the adjusting valve unit 31, the valve body 31B is driven up and down by the drive unit 40, the distance between the valve body 31B and the valve seat 31A is adjusted, and the gas pressure to the downstream side pipeline 12 is set to the set pressure value P 1 Is adjusted so that on the other hand,
The shut-off valve portion 32 is interlocked with the valve seat 32A provided above the partition portions 23A and 23B in the tubular portion 24 and the drive portion 40, and is provided above the valve seat 32A with a predetermined interval,
The valve body 32B is connected to the upper side of the adjusting valve portion 31 via the adjusting spring 33. This shutoff valve section 32
When the pressure of the gas in the downstream side pipeline 12 becomes equal to or higher than the set pressure value P 2 , the drive unit 40 compresses the adjustment spring 33, so that the valve body 32B is pressed against the valve seat 32A, and the downstream side The delivery of gas to the conduit 12 is stopped.
【００１２】駆動部４０は、一端が弁部３０と接続さ
れ、弁部３０を駆動する弁棒４１と、弁棒４１の他端と
固定支軸４２を介して連設され、固定支軸４２を中心に
して回動するレバー４３と、レバー４３の一端に接続さ
れる連動子４４とにより構成されており、連動子４４に
接続されたレバー４３が固定支軸４２を中心として時計
回りあるいは反時計回りに回動し、レバー４３に連設さ
れた弁棒４１が上方あるいは下方に動くことにより弁部
３０を駆動するようになっている。One end of the drive unit 40 is connected to the valve unit 30, the valve rod 41 for driving the valve unit 30 is connected to the other end of the valve rod 41 via a fixed support shaft 42, and a fixed support shaft 42 is provided. The lever 43 is connected to one end of the lever 43. The lever 43 is connected to one end of the lever 43. The lever 43 connected to the interlocker 44 rotates clockwise or counterclockwise around the fixed support shaft 42. The valve unit 30 is driven by rotating clockwise and moving the valve rod 41 connected to the lever 43 upward or downward.
【００１３】圧力感知部５０には、連動子４４の他端が
固定され、連動子４４に感知した圧力を伝達するメイン
ダイヤフラム５１が設けられている。圧力感知部５０
は、このメインダイヤフラム５１によって２つの部屋、
すなわち、駆動部４０側において下流側管路１２の圧力
を制御する圧力制御室５２と、通気口（図示せず）を介
して大気に連通された大気連通室５３とに分けられてい
る。The pressure sensing portion 50 is provided with a main diaphragm 51 to which the other end of the interlocking member 44 is fixed and which transmits the pressure sensed to the interlocking member 44. Pressure sensing unit 50
The main diaphragm 51 has two rooms,
That is, it is divided into a pressure control chamber 52 that controls the pressure of the downstream side pipeline 12 on the drive unit 40 side and an atmosphere communication chamber 53 that communicates with the atmosphere via a ventilation port (not shown).
【００１４】圧力制御室５２と流路２２の狭管部２２Ｃ
の下流側との間には管路５７が設けられており、圧力制
御室５２に狭管部２２Ｃにおけるガスの圧力が伝達され
るようになっている。メインダイヤフラム５１の大気連
通室５３側には、開口部５４Ａを有する受圧板５４が設
けられ、また、大気連通室５３のキャップ部５３Ａには
調整ねじ５６が組み込まれている。この調整ねじ５６に
は調整ばね５５の一端が固定され、この調整ばね５５の
他端側が受圧板５４の開口部５４Ａを介してメインダイ
ヤフラム５１に固定されており、メインダイヤフラム５
１を圧力制御室５２方向に付勢している。なお、調整ば
ね５５の付勢力は、調整ねじ５６をキャップ部５３Ａに
ねじ込むことにより調整できるようになっている。Narrow tube portion 22C of the pressure control chamber 52 and the flow path 22
A pipe 57 is provided between the pressure control chamber 52 and the downstream side of the narrow pipe 22C so that the gas pressure in the narrow pipe 22C is transmitted to the pressure control chamber 52. A pressure receiving plate 54 having an opening 54A is provided on the atmosphere communication chamber 53 side of the main diaphragm 51, and an adjusting screw 56 is incorporated in the cap 53A of the atmosphere communication chamber 53. One end of the adjusting spring 55 is fixed to the adjusting screw 56, and the other end of the adjusting spring 55 is fixed to the main diaphragm 51 via the opening 54A of the pressure receiving plate 54.
1 is urged toward the pressure control chamber 52. The biasing force of the adjusting spring 55 can be adjusted by screwing the adjusting screw 56 into the cap portion 53A.
【００１５】本体部２１の底部には開室６１が設けら
れ、この開室６１により補助制御部６０が構成されてい
る。開室６１と流路２２とは通孔２１ａを介して互いに
接続されている。開室６１にはバランスダイヤフラム６
２が設けられており、このバランスダイヤフラム６２が
通孔２１ａを介して上流側管路１１のガスの圧力を感知
するようになっている。バランスダイヤフラム６２の上
側には、連動子６３を介して、この感知された圧力を基
に駆動される弁棒６４が設けられている。この弁棒６４
の上端には、調整弁部３１の弁体３１Ｂが接続されてい
る。バランスダイヤフラム６２の外側には、バランスダ
イヤフラム６２を支持するバランスダイヤフラムガイド
６５が設けられている。このバランスダイヤフラムガイ
ド６５の外周部には雄ねじ部２１Ａが形成されており、
この雄ねじ部２１Ａにはキャップ部２１Ｂ又は後述の治
具７０に形成された雌ねじ部が螺合可能となっている。An opening chamber 61 is provided at the bottom of the main body portion 21, and the opening chamber 61 constitutes an auxiliary control unit 60. The open chamber 61 and the flow path 22 are connected to each other through the through hole 21a. The balance diaphragm 6 is provided in the opening chamber 61.
2 is provided, and this balance diaphragm 62 senses the pressure of the gas in the upstream side pipeline 11 via the through hole 21a. On the upper side of the balance diaphragm 62, a valve rod 64 driven by the sensed pressure is provided via an interlocking element 63. This valve rod 64
The valve body 31B of the adjusting valve unit 31 is connected to the upper end of the. A balance diaphragm guide 65 that supports the balance diaphragm 62 is provided outside the balance diaphragm 62. A male screw portion 21A is formed on the outer peripheral portion of the balance diaphragm guide 65,
A cap portion 21B or a female screw portion formed on a jig 70 described later can be screwed into the male screw portion 21A.
【００１６】このような補助制御部６０は、バランスダ
イヤフラム６２によって、流路２２の入口２２ａ側の圧
力変動を感知することにより、この圧力変動により弁部
３０が作動するために設定した零点がずれないように調
整するものである。なお、バランスダイヤフラムガイド
６２は本発明の「支持部」、連動子６３は本発明の「連
動部」の一具体例にそれぞれ対応している。The auxiliary control unit 60 detects the pressure fluctuation on the inlet 22a side of the flow path 22 by the balance diaphragm 62, and the zero point set for the valve unit 30 to operate due to the pressure fluctuation is deviated. It is adjusted so that it does not exist. The balance diaphragm guide 62 corresponds to one example of the "supporting portion" of the present invention, and the interlocking member 63 corresponds to one specific example of the "interlocking portion" of the present invention.
【００１７】この整圧装置１０では、まず、管路５７を
通して圧力感知部５０で感知された下流側管路１２の圧
力を基に、駆動部４０を介して調整弁部３１によって下
流側管路１２のガスの圧力が設定圧力値Ｐ1 となるよう
に調整する。例えば、下流側管路１２の圧力が上昇した
とき、管路５７を通じて下流側管路１２のガスの圧力が
伝えられ、圧力制御室５２の圧力が上昇する。この圧力
制御室５２の圧力が、調整ばね５５の付勢力と大気圧に
よる大気連通室５３側の圧力より大きくなると、メイン
ダイヤフラム５１が大気連通室５３側に変位する。この
大気連通室５３側に移動したメインダイヤフラム５１に
固定された連動子４４を介して、レバー４３が固定支軸
４２を中心として反時計回りに回動し、レバー４３に連
設された弁棒４１が下方に変位する。この下方に移動し
た弁棒４１によって、調整弁部３１の開度、すなわち弁
体３１Ｂと弁座３１Ａとの間の間隔が小さくなって、下
流側管路１２の圧力が設定圧力値Ｐ1 となるように調整
される。In this pressure regulating device 10, first, based on the pressure of the downstream side pipeline 12 detected by the pressure sensing section 50 through the pipeline 57, the downstream side pipeline is controlled by the adjusting valve section 31 via the drive section 40. The pressure of 12 gases is adjusted to the set pressure value P 1 . For example, when the pressure in the downstream conduit 12 increases, the pressure of the gas in the downstream conduit 12 is transmitted through the conduit 57 and the pressure in the pressure control chamber 52 increases. When the pressure in the pressure control chamber 52 becomes larger than the pressure on the atmosphere communication chamber 53 side due to the urging force of the adjusting spring 55 and the atmospheric pressure, the main diaphragm 51 is displaced to the atmosphere communication chamber 53 side. The lever 43 rotates counterclockwise about the fixed support shaft 42 through the interlocking member 44 fixed to the main diaphragm 51 that has moved to the atmosphere communication chamber 53 side, and the valve rod connected to the lever 43. 41 is displaced downward. Due to the valve rod 41 that has moved downward, the opening degree of the regulating valve portion 31, that is, the interval between the valve body 31B and the valve seat 31A becomes smaller, and the pressure in the downstream side pipeline 12 becomes the set pressure value P 1 . Is adjusted to
【００１８】なお、調整弁部３１の弁座３１Ａと弁体３
１Ｂとの間に異物が噛み込まれる等して閉止されず、下
流側管路１２のガスの圧力が遮断弁部３２で設定された
圧力値である設定圧力値Ｐ2 以上になると、管路５７を
通じて下流側管路１２のガスの圧力が伝えられ、圧力制
御室５２の圧力が上昇し、メインダイヤフラム５１が大
気連通室５３側に更に移動し、このメインダイヤフラム
５１に固定された連動子４４を介して、レバー４３が固
定支軸４２を中心として反時計回りに回動し、レバー４
３に連設された弁棒４１が更に下方に移動する。この下
方に移動した弁棒４１によって、調整ばね３３が圧縮さ
れ、遮断弁部３２における弁体３２Ｂが弁座３２Ａに押
し付けられて、下流側管路１２へのガスの送出が停止さ
れる。なお、下流側管路１２のガスの圧力が設定圧力値
Ｐ2 より低下すると、遮断弁部３２が遮断した状態から
遮断していない状態への復帰が自動的に行われ、調整弁
部３１に切り替わり、前述したように調整弁部３１によ
って下流側管路１２のガスの圧力が調整される。The valve seat 31A of the adjusting valve portion 31 and the valve body 3 are
When foreign matter is caught between 1B and the like and the gas is not closed, and the gas pressure in the downstream side pipe line 12 becomes equal to or higher than the set pressure value P 2 which is the pressure value set in the shutoff valve part 32, The pressure of the gas in the downstream conduit 12 is transmitted through 57, the pressure in the pressure control chamber 52 rises, the main diaphragm 51 further moves to the atmosphere communication chamber 53 side, and the interlock member 44 fixed to the main diaphragm 51 is connected. The lever 43 rotates counterclockwise about the fixed support shaft 42 via the
The valve rod 41 connected to 3 moves further downward. The adjustment spring 33 is compressed by the valve rod 41 that has moved downward, the valve element 32B in the shutoff valve portion 32 is pressed against the valve seat 32A, and the delivery of gas to the downstream side pipeline 12 is stopped. When the pressure of the gas in the downstream pipeline 12 drops below the set pressure value P 2 , the shut-off valve section 32 automatically returns from the shut-off state to the non-shut-off state, and After switching, the gas pressure in the downstream conduit 12 is adjusted by the adjusting valve unit 31 as described above.
【００１９】次に、図２ないし図４を参照して、整圧装
置１０の遮断弁部３２の作動確認方法について説明す
る。なお、図２は、遮断弁部３２の作動を確認する際に
用いる治具７０の斜視図を表している。なお、図３およ
び図４は弁部３０付近を拡大したものを表している。Next, a method of confirming the operation of the shutoff valve portion 32 of the pressure regulating device 10 will be described with reference to FIGS. 2 shows a perspective view of the jig 70 used to confirm the operation of the shutoff valve portion 32. 3 and 4 are enlarged views of the vicinity of the valve portion 30.
【００２０】この治具７０は、キャップ部２１Ｂの代わ
りに雄ねじ部２１Ａにねじ込むためのものである。この
治具７１は、円形状の底部７１を有し、この底部７１の
中心には突状部７２が立設されている。底部７１の周縁
部には筒状の側部７３が設けられており、この側部７３
の内壁面には雌ねじ部７３Ａが形成されている。なお、
この治具７０を雄ねじ部２１Ａにねじ込み、雌ねじ部７
３Ａと雄ねじ部２１Ａとを螺合させるに伴って、治具７
０の突状部７２により、連動子６３の底部が押し上げら
れるようになっている。なお、雌ねじ部７３Ａは本発明
の「第２のねじ部」の一具体例に対応している。The jig 70 is for screwing into the male screw portion 21A instead of the cap portion 21B. The jig 71 has a circular bottom portion 71, and a protruding portion 72 is provided upright at the center of the bottom portion 71. A cylindrical side portion 73 is provided on the peripheral portion of the bottom portion 71.
A female screw portion 73A is formed on the inner wall surface of the. In addition,
The jig 70 is screwed into the male screw portion 21A to form the female screw portion 7
As the 3A and the male screw portion 21A are screwed together, the jig 7
The bottom portion of the interlocking member 63 is pushed up by the protruding portion 72 of 0. The female screw portion 73A corresponds to a specific example of "a second screw portion" of the invention.
【００２１】次に、このような構成を有する治具７０を
用いて、遮断弁部３２の作動を確認する方法について説
明する。図４（Ａ）に示したように、上流側管路１１の
圧力を上昇させると、この圧力が上昇したガスが下流側
管路１２に送出されて、管路５７を通じて圧力感知部５
０で感知される。この感知された圧力を基に、駆動部４
０によって調整弁部３１の開度、すなわち弁体３１Ｂと
弁座３１Ａとの間の間隔が小さくなるように駆動され、
下流側管路１２の圧力が設定圧力値Ｐ1 に調整される。
そして、上流側管路１１の圧力を更に上昇させていく
と、調整弁部３１が弁体３１Ｂが弁座３１Ａに押し付け
られて閉止するようになる。Next, a method of confirming the operation of the shutoff valve portion 32 using the jig 70 having such a configuration will be described. As shown in FIG. 4 (A), when the pressure of the upstream side pipe line 11 is increased, the gas whose pressure is increased is sent to the downstream side pipe line 12, and the pressure sensing unit 5 is supplied through the pipe line 57.
Detected at 0. Based on this sensed pressure, the drive unit 4
0 is driven so that the opening degree of the regulating valve portion 31, that is, the gap between the valve body 31B and the valve seat 31A is reduced,
The pressure in the downstream pipe line 12 is adjusted to the set pressure value P 1 .
Then, when the pressure in the upstream pipe line 11 is further increased, the adjustment valve portion 31 is pressed against the valve seat 31A to close the valve body 31B.
【００２２】次に、キャップ部２１Ｂを本体部２１の雄
ねじ部２１Ａから外し、代わりに治具７０を本体部２１
の雄ねじ部２１Ａにねじ込む。すなわち、治具７０の雌
ねじ部７３Ａとバランスダイヤフラムガイド６５の外周
部に形成された雄ねじ部２１Ａとを螺合させる。これに
より、治具７０の突状部７２が連動子６３を押し上げ、
閉止した調整弁部３１が強制的に開かれる。調整弁部３
１が開かれることにより、上流側管路１１の上昇したガ
スが下流側管路１２へ送出されて、上昇したガスの圧力
が管路５７を通じて圧力感知部５０に伝達される。この
感知された圧力が設定圧力値Ｐ2 以上になると、遮断弁
部３２に不具合がない場合には、駆動部４０によって、
調整ばね３３が圧縮されることにより、弁体３２Ｂが弁
座３２Ａに押し付けられて、上流側管路１１からのガス
が遮断され、下流側管路１２のガスの圧力は上昇しな
い。一方、遮断弁部３２に不具合がある場合には、遮断
弁部３２は作動せず、下流側管路１２のガスの圧力は上
昇する。Next, the cap portion 21B is removed from the male screw portion 21A of the main body portion 21, and the jig 70 is used instead.
It is screwed into the male screw part 21A. That is, the female screw portion 73A of the jig 70 and the male screw portion 21A formed on the outer peripheral portion of the balance diaphragm guide 65 are screwed together. As a result, the protrusion 72 of the jig 70 pushes up the interlocking element 63,
The closed adjusting valve unit 31 is forcibly opened. Regulator valve 3
When 1 is opened, the gas that has risen in the upstream pipe 11 is sent to the downstream pipe 12, and the pressure of the gas that has risen is transmitted to the pressure sensing unit 50 through the pipe 57. When the sensed pressure becomes equal to or higher than the set pressure value P 2 , if the shutoff valve unit 32 has no problem, the drive unit 40
When the adjusting spring 33 is compressed, the valve body 32B is pressed against the valve seat 32A, the gas from the upstream side pipeline 11 is blocked, and the gas pressure in the downstream side pipeline 12 does not rise. On the other hand, when the shutoff valve portion 32 has a defect, the shutoff valve portion 32 does not operate and the pressure of the gas in the downstream pipe line 12 increases.
【００２３】従って、この整圧装置１０では、治具７０
を用いて調整弁部３１を強制的に開き、上流側管路１１
のガスの圧力を変化させて下流側管路１２の圧力の上昇
の有無を調べることにより、上流側管路１１のガスの圧
力変動に対する遮断弁部３２の作動を確認することがで
きる。よって、特別な補助装置などが不要であり、設置
現場において遮断弁部３２の作動状態を簡単に点検する
ことが可能となる。Therefore, in this pressure regulating device 10, the jig 70 is used.
Is used to forcibly open the adjusting valve portion 31, and the upstream side pipeline 11
By checking the presence or absence of an increase in the pressure of the downstream side pipeline 12 by changing the pressure of the gas of FIG. Therefore, a special auxiliary device or the like is unnecessary, and it becomes possible to easily check the operating state of the shutoff valve portion 32 at the installation site.
【００２４】以上、実施の形態を挙げて本発明を説明し
たが、本発明は上記実施の形態に限定されるものではな
く、種々変形が可能である。例えば、上記実施の形態の
整圧装置の構成要素やその配置は図１に示したものに限
られない。また、メインダイヤフラム５１は直動式また
はパイロット式を問わず利用可能である。The present invention has been described above with reference to the embodiments, but the present invention is not limited to the above embodiments, and various modifications can be made. For example, the components and arrangement of the pressure regulating device of the above embodiment are not limited to those shown in FIG. Further, the main diaphragm 51 can be used regardless of whether it is a direct drive type or a pilot type.
【００２５】[0025]
【発明の効果】以上説明したように本発明の整圧装置の
作動確認方法によれば、キャップ部を取り外して、ほぼ
同形状の治具を雄ねじ部にねじ込んで、調整弁部を強制
的に開き、上流側管路のガスの圧力を変化させて、下流
側管路のガスの圧力の上昇の有無を調べることにより、
上流側管路のガスの圧力変動に対する遮断弁部の作動状
態を確認するようにしたので、設置現場において特別な
補助装置などを必要とせずに、遮断弁部の作動状態を簡
単に点検することが可能となる。As described above, according to the method for confirming the operation of the pressure regulating device of the present invention, the cap portion is removed, and the jig having substantially the same shape is screwed into the male screw portion to force the regulating valve portion. By opening and changing the pressure of the gas in the upstream pipeline, and checking for a rise in the gas pressure in the downstream pipeline,
Since the operating state of the shutoff valve section was checked against gas pressure fluctuations in the upstream pipeline, it is possible to easily check the operating state of the shutoff valve section without requiring any special auxiliary equipment at the installation site. Is possible.
【図１】本発明の一実施の形態に係る整圧装置の概略構
成を表す図である。FIG. 1 is a diagram showing a schematic configuration of a pressure regulating device according to an embodiment of the present invention.
【図２】整圧装置の作動確認用の治具の斜視図である。FIG. 2 is a perspective view of a jig for checking the operation of the pressure regulating device.
【図３】図１に示した整圧装置の作動確認方法を説明す
るための図である。FIG. 3 is a diagram for explaining an operation confirmation method of the pressure regulating device shown in FIG.
【図４】図１に示した整圧装置の作動確認方法を説明す
るための図である。FIG. 4 is a diagram for explaining an operation confirmation method of the pressure regulating device shown in FIG.
１０・・・ 整圧装置、１１・・・ 上流側管路、１１Ｂ，１２
Ａ，２２Ａ，２２Ｂ・・・ フランジ、１２・・・ 下流側管
路、２１・・・ 本体部、２１Ａ・・・ 雄ねじ部、２１ａ・・・
通孔、２１Ｂ・・・ キャップ部、２２・・・ 流路、２２ａ・・
・ 入口、２２ｂ・・・ 出口、２３Ａ，２３Ｂ・・・ 仕切部、
２４・・・ 筒体部、２５・・・ ストレーナ、３０・・・ 弁部、
３１・・・ 調整弁部、３１Ａ，３２Ａ・・・ 弁座、３１Ｂ，
３２Ｂ・・・弁体、３２・・・ 遮断弁部、３３，５５・・・ 調
整ばね、４０・・・ 駆動部、４１，６４・・・ 弁棒、４２・・
・ 固定支軸、４３・・・ レバー、４４，６３・・・ 連動子、
５０・・・ 圧力感知部、５１・・・ メインダイヤフラム、５
２・・・ 圧力制御室、５３・・・大気連通室、５４・・・ 受圧
版、５４Ａ・・・ 開口部、５６・・・ 調整ねじ、５７・・・管
路、６１・・・ 開室、６２・・・ バランスダイヤフラム、６
５・・・ バランスダイヤフラムガイド、７０・・・ 治具、７
１・・・ 底部、７２・・・ 突状部、７３・・・ 側部、７３Ａ・・
・ 雌ねじ部10 ... Pressure regulating device, 11 ... Upstream pipe line, 11B, 12
A, 22A, 22B ... Flange, 12 ... Downstream side pipe line, 21 ... Main body part, 21A ... Male screw part, 21a ...
Through hole, 21B ... Cap portion, 22 ... Flow path, 22a ...
・ Inlet, 22b ... Exit, 23A, 23B ... Partition,
24 ... Cylindrical body part, 25 ... Strainer, 30 ... Valve part,
31 ... Regulator valve part, 31A, 32A ... Valve seat, 31B,
32B ... Valve body, 32 ... Shut-off valve section, 33, 55 ... Adjusting spring, 40 ... Drive section, 41, 64 ... Valve rod, 42 ...
・ Fixed support shaft, 43 ... Lever, 44, 63 ... Interlocking member,
50 ... Pressure sensing unit, 51 ... Main diaphragm, 5
2 ... Pressure control chamber, 53 ... Atmosphere communication chamber, 54 ... Pressure receiving plate, 54A ... Opening part, 56 ... Adjusting screw, 57 ... Pipe line, 61 ... Opening chamber , 62 ... Balance diaphragm, 6
5 ... Balance diaphragm guide, 70 ... Jig, 7
1 ... Bottom part, 72 ... Projection part, 73 ... Side part, 73A ...
・ Female thread
───────────────────────────────────────────────────── フロントページの続き (72)発明者 三留 正勝 東京都港区海岸一丁目５番20号 東京瓦斯 株式会社内 (72)発明者 寺田 肇 東京都港区海岸一丁目５番20号 東京瓦斯 株式会社内 (72)発明者 藤澤 和也 東京都港区海岸一丁目５番20号 東京瓦斯 株式会社内 (72)発明者 藤原 裕一 大阪府東大阪市箱殿町10番４号 伊藤工機 株式会社内 Ｆターム(参考） 5H316 AA01 BB01 DD02 EE02 EE04 EE18 ES06 FF02 FF14 GG01 GG11 JJ01 JJ11 KK02 KK04 KK05 LL05 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Masakatsu Sandome 1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas Within the corporation (72) Inventor Hajime Terada 1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas Within the corporation (72) Inventor Kazuya Fujisawa 1-5-20 Kaigan, Minato-ku, Tokyo Tokyo Gas Within the corporation (72) Inventor Yuichi Fujiwara Ito Koki, 10-4 Hakoto-cho, Higashi-Osaka City, Osaka Prefecture Within the corporation F term (reference) 5H316 AA01 BB01 DD02 EE02 EE04 EE18 ES06 FF02 FF14 GG01 GG11 JJ01 JJ11 KK02 KK04 KK05 LL05
Claims (2)
が下流側管路に接続される流路の出口側のガスの圧力を
メインダイヤフラムによって感知し、この感知した圧力
を基に、駆動部を介して上流側管路から下流側管路へ送
出するガスの圧力を第１の設定圧力値となるように調整
する調整弁部と、前記調整弁部の上方に調整ばねを介し
て設けられ、下流側管路のガスの圧力が前記第１の設定
圧力より大きな第２の設定圧力値以上になると、前記調
整弁部に替わり作動し、前記第２の設定圧力値より小さ
くなると、遮断した状態から遮断していない状態への復
帰を自動的に行う遮断弁部と、前記調整弁部の下端と連
動部を介して連動し、前記流路の入口側のガスの圧力を
感知するバランスダイヤフラムと、前記バランスダイヤ
フラムを支持すると共に第１のねじ部を有する支持部と
を備えた整圧装置の前記遮断弁部の作動を確認するため
の方法であって、 前記支持部の第１のねじ部に螺合可能な第２のねじ部を
有する治具を用い、前記第２のねじ部と第１のねじ部と
を螺合させるに伴って前記連動部を押し上げることによ
って、前記調整弁部を強制的に開くと共に、前記調整弁
部が開いたままの状態で上流側管路のガスの圧力を変化
させて下流側管路のガスの圧力の上昇の有無を調べるこ
とにより、上流側管路のガスの圧力に対する遮断弁部の
作動状態を確認することを特徴とする整圧装置の作動確
認方法。1. A main diaphragm senses the pressure of gas on the outlet side of a flow path in which the inlet side is connected to an upstream side pipeline and the outlet side is connected to a downstream side pipeline, and driving is performed based on this sensed pressure. An adjusting valve part for adjusting the pressure of the gas sent from the upstream side pipe line to the downstream side pipe line through the section so as to have a first set pressure value, and provided above the adjusting valve part via an adjusting spring. When the pressure of the gas in the downstream pipe line becomes equal to or higher than a second set pressure value that is larger than the first set pressure, the valve operates in place of the adjusting valve section, and when it becomes smaller than the second set pressure value, the shutoff is performed. A balance that senses the gas pressure at the inlet side of the flow path by interlocking with the shut-off valve section that automatically returns from the closed state to the non-shut-off state through the interlocking section with the lower end of the adjusting valve section. When supporting the diaphragm and the balance diaphragm, A method for confirming the operation of the shut-off valve portion of a pressure regulating device, both of which includes a support portion having a first screw portion, and a second screw method capable of being screwed into the first screw portion of the support portion. Using a jig having a threaded portion, the adjustment valve portion is forcibly opened by pushing up the interlocking portion as the second screw portion and the first screw portion are screwed together, and The shutoff valve for the gas pressure in the upstream pipeline is checked by changing the gas pressure in the upstream pipeline with the adjustment valve section open to check whether the gas pressure in the downstream pipeline has risen. A method for confirming the operation of a pressure regulating device, which comprises confirming the operating state of a section.
られ、前記突状部が前記連動部を押し上げることを特徴
とする請求項３記載の整圧装置の作動確認方法。2. The method of confirming the operation of a pressure regulating device according to claim 3, wherein a protrusion is provided at the center of the bottom of the jig, and the protrusion pushes up the interlocking portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001360161A JP3724717B2 (en) | 2001-11-26 | 2001-11-26 | Checking operation of pressure regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001360161A JP3724717B2 (en) | 2001-11-26 | 2001-11-26 | Checking operation of pressure regulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003162332A true JP2003162332A (en) | 2003-06-06 |
| JP3724717B2 JP3724717B2 (en) | 2005-12-07 |
Family
ID=19171027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001360161A Expired - Lifetime JP3724717B2 (en) | 2001-11-26 | 2001-11-26 | Checking operation of pressure regulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3724717B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015532479A (en) * | 2012-09-28 | 2015-11-09 | エマーソン プロセス マネージメント レギュレーター テクノロジーズインコーポレイテッド | Upstream detection for balance port |
-
2001
- 2001-11-26 JP JP2001360161A patent/JP3724717B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015532479A (en) * | 2012-09-28 | 2015-11-09 | エマーソン プロセス マネージメント レギュレーター テクノロジーズインコーポレイテッド | Upstream detection for balance port |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3724717B2 (en) | 2005-12-07 |
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