JP2005310040A - Pressure regulator - Google Patents

Pressure regulator Download PDF

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JP2005310040A
JP2005310040A JP2004129529A JP2004129529A JP2005310040A JP 2005310040 A JP2005310040 A JP 2005310040A JP 2004129529 A JP2004129529 A JP 2004129529A JP 2004129529 A JP2004129529 A JP 2004129529A JP 2005310040 A JP2005310040 A JP 2005310040A
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pressure
pressure regulator
housing
relief
pressure regulating
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JP4428700B2 (en
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Masakatsu Mitome
正勝 三留
Hajime Terada
肇 寺田
Satoru Kawasumi
悟 川澄
Takashi Kawahigashi
孝至 川東
Kazuya Fujisawa
和也 藤澤
Kazuo Tate
和男 建
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Tokyo Gas Co Ltd
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Tokyo Gas Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a pressure regulator provided with a simple structure, and a pressure regulation function and a relief function at enough operation accuracy, the total length of which is short, enabling to simply perform exchange and attachment to piping in a short period of time. <P>SOLUTION: The pressure regulator 1 is monolithicly provided with a relief valve 23 in a pressure regulator main body 11, and the pressure regulator main body 11 has a pressure regulation part 13 in a housing 12. A through hole 21a is provided on a bottom board 21 of the housing 12 so as to communicate with a passage 14. The relief valve 23 detects an abnormal rise in the secondary side pressure through the through hole 21a of the bottom board 21 to perform relief operations. The pressure regulation part 13 and the relif valve 23 are placed on the top and the bottom of the bottom board 21 so as to be integrated with sharing the bottom board 21, so that the length Li between surfaces of the pressure regulator 1 and a gas meter 2 becomes significantly shorter than conventional one. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、都市ガスやＬＰガスなどの流量を計測するためのガスメータの直前に配置されてガスの圧力調節を行うハウスレギュレータのような整圧器に関する。   The present invention relates to a pressure regulator such as a house regulator that is disposed immediately before a gas meter for measuring a flow rate of city gas, LP gas, or the like and adjusts the pressure of the gas.

都市ガスは一般に、高・中圧導管を経て各地区へと分配され、地区整圧器にて一般ガス供給約款の範囲内の圧力に整圧された後、低圧導管によって末端のユーザまで供給される。他方、近年では、一般ガス供給約款の範囲を超える中間圧で低圧導管以降の下流にまでガスを供給し、各ユーザの建物または各戸に取り付けられたハウスレギュレータ（以下、ＨＲと略称する）によって一般ガス供給約款の範囲内にまでガスの圧力を減じるという供給システムが注目されている。   City gas is generally distributed to each district through high- and medium-pressure conduits, adjusted to a pressure within the range of the general gas supply agreement by the district pressure regulator, and then supplied to the end user by a low-pressure conduit. . On the other hand, in recent years, gas is supplied downstream from the low-pressure conduit at an intermediate pressure exceeding the range of the general gas supply agreement, and is generally used by a house regulator (hereinafter abbreviated as HR) attached to each user's building or door. Attention is focused on a supply system that reduces the gas pressure to within the limits of the gas supply agreement.

ＨＲのようなガス工作物の技術上の基準を定める省令によれば、ＨＲにはガバナの故障等による圧力の異常な上昇を防止するための圧力上昇防止装置（中間圧供給方式の場合には、リリーフ弁（例えば、特許文献１）または圧力上昇防止遮断弁）の設置が義務付けられている。
特開２０００−１７０９３４号公報 According to a ministerial ordinance that establishes technical standards for gas workpieces such as HR, HR has a pressure rise prevention device (in the case of an intermediate pressure supply system) to prevent an abnormal rise in pressure due to a governor failure or the like. The installation of a relief valve (for example, Patent Document 1) or a pressure rise prevention cutoff valve is obligatory.
JP 2000-170934 A

これを受けて、従来のＨＲでは、
（Ａ）メインダイヤフラムの筺体内にリリーフ弁を収容した方式
（Ｂ）ＨＲの下流側にリリーフ弁を別体で設置する方式
などが採用されていた。 In response, in conventional HR,
(A) A system in which a relief valve is accommodated in the casing of the main diaphragm (B) A system in which a relief valve is installed separately on the downstream side of the HR has been adopted.

上記（Ａ）の方式のＨＲは、図６に示したように、筺体１０１の内部にダイヤフラム１０２を備え、このダイヤフラム１０２が二次圧に応じて整圧スプリング１０４を持ち上げ、これに連動して主弁（メインバルブ）１０３により隔壁１０５の開口部１０５ａの開度を調整、すなわち整圧動作が行われる。ダイヤフラム１０２には開口部１０２ａが設けられ、この開口部１０２ａには安全スプリング１０６を介して安全弁（リリーフ弁）１０７が設けられている。   As shown in FIG. 6, the HR of the above method (A) includes a diaphragm 102 inside the housing 101, and this diaphragm 102 lifts the pressure regulating spring 104 according to the secondary pressure, and interlocks with this. The opening degree of the opening 105a of the partition wall 105 is adjusted by the main valve (main valve) 103, that is, a pressure regulation operation is performed. The diaphragm 102 is provided with an opening 102 a, and a safety valve (relief valve) 107 is provided in the opening 102 a via a safety spring 106.

このＨＲでは、上流側から供給される都市ガスの整圧動作が上述のようにダイヤフラム１０２に連動した主弁１０３によって行われる。ガス使用時に、二次圧力によりダイヤフラムを押し上げ、主弁が閉まった状態の時に、何らかの要因で二次圧力が異常に高くなると、ダイヤフラム１０２が整圧スプリング１０４および安全スプリング１０６をさらに押し上げる。これにより安全弁１０７が開き、そのときの異常に高い圧力のガスＧを筺体１０１に設けられた放散管１０８から管外へと放出する。これにより、二次圧力を、安全弁作動圧以上に上昇しないように保つことができる。   In this HR, the pressure regulation operation of the city gas supplied from the upstream side is performed by the main valve 103 interlocked with the diaphragm 102 as described above. When the gas is used, the diaphragm is pushed up by the secondary pressure. If the secondary pressure becomes abnormally high for some reason when the main valve is closed, the diaphragm 102 pushes up the pressure regulating spring 104 and the safety spring 106 further. As a result, the safety valve 107 is opened, and the gas G having an abnormally high pressure at that time is released from the diffusion tube 108 provided in the housing 101 to the outside of the tube. Thereby, a secondary pressure can be kept so that it may not raise more than a safety valve operating pressure.

しかしながら、この方式では、ダイヤフラム１０２が内蔵された狭い筺体１０１内にさらに複雑な構造で高精度なリリーフ弁部を内蔵することが困難であるため、リリーフ弁の動作精度をある程度犠牲にせざるを得ないという問題がある。誤動作を防止するには、リリーフ作動圧力を高めに設定すればよいが、これではリリーフ弁の動作を高精度なものとすることはできない。また、この方式では、ダイヤフラム１０２に安全スプリング１０６および安全弁１０７が取り付けられているため、動作に不具合が生じた場合に、ダイヤフラム１０２および安全弁１０７のいずれの故障であるかの判断が困難である。   However, in this method, it is difficult to incorporate a highly accurate relief valve portion with a more complicated structure in the narrow casing 101 in which the diaphragm 102 is built, so the operation accuracy of the relief valve must be sacrificed to some extent. There is no problem. In order to prevent malfunction, the relief operating pressure may be set to a high value, but with this, the operation of the relief valve cannot be made highly accurate. Further, in this method, since the safety spring 106 and the safety valve 107 are attached to the diaphragm 102, it is difficult to determine which of the diaphragm 102 and the safety valve 107 is faulty when a malfunction occurs.

一方、上記（Ｂ）の方式は、図７に示したように、ＨＲ２０１とリリーフ弁２０２とを配管方向に直列に配置してユニット構成とするものである。この方式であれば、リリーフ弁２０２の動作精度を十分なものとし、また、リリーフ作動圧力も所望の値に設定して安定させることができるが、その反面、下記のような問題が残る。   On the other hand, in the method (B), as shown in FIG. 7, the HR 201 and the relief valve 202 are arranged in series in the piping direction to form a unit configuration. With this method, the operation accuracy of the relief valve 202 can be made sufficient, and the relief operating pressure can be set to a desired value and stabilized. However, the following problems remain.

（１）リリーフ弁２０２はＨＲ２０１とは別に、ＨＲ２０１とガスメータ２０３との間に介挿されることになるので、そのＨＲ２０１とリリーフ弁２０２とからなるユニット２０４の全長Ｌｐが大きくなる。しかし、都市ガスやＬＰガスのガスメータは一般に、スペースに余裕のない狭隘な場所に設けられることが多い。そのため、ＨＲ２０１とリリーフ弁２０２とからなる長いユニット２０４を狭隘なスペース内に収めることができなくなるなど、設置環境上の制約が大きくなる。
（２）リリーフ弁２０２を有さなくて面間が短いタイプのＨＲ配管ユニットを、上記のＨＲ２０１とリリーフ弁２０２とからなる長いユニット２０４に交換しようとすると、上記設置環境上の制約から不可能となる場合が多い。
（３）リリーフ弁２０２の交換時や追加時の作業工程が煩雑なものとなり、また、その作業工程に時間が掛かる。その結果、作業コストが高額化すると共に、作業性が低下するので、作業中でのヒューマンエラー等に起因した設置ミスなどを誘発する虞がある。
（４）ＨＲ２０１本体とリリーフ弁２０２とを個別に管理することになるため、それらの各々についての在庫管理や梱包・輸送など、取扱上の手間が煩雑なものとなる。 (1) Since the relief valve 202 is inserted between the HR 201 and the gas meter 203 separately from the HR 201, the total length Lp of the unit 204 including the HR 201 and the relief valve 202 is increased. However, city gas and LP gas gas meters are generally provided in confined spaces where there is not enough space. For this reason, restrictions on the installation environment increase, such as the long unit 204 composed of the HR 201 and the relief valve 202 cannot be stored in a narrow space.
(2) If an attempt is made to replace the HR piping unit of short type with no relief valve 202 with a long unit 204 composed of the HR 201 and the relief valve 202, it is impossible due to restrictions on the installation environment. In many cases.
(3) The work process at the time of replacement or addition of the relief valve 202 becomes complicated, and the work process takes time. As a result, the work cost is increased and the workability is lowered, so that there is a risk of causing an installation error due to a human error or the like during the work.
(4) Since the main body of the HR 201 and the relief valve 202 are individually managed, handling work such as inventory management, packing, and transportation for each of them is complicated.

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、簡易な構造で、整圧機能と共に十分な動作精度のリリーフ機能を有し、かつ面間が短く、交換や配管への取り付けを短時間で簡易に済ませることができる整圧器を提供することにある。   The present invention has been made in view of such problems, and its purpose is a simple structure, a pressure adjusting function and a relief function with sufficient operation accuracy, and a short face-to-face, replacement and attachment to piping. An object of the present invention is to provide a pressure regulator capable of simply and quickly completing the operation.

本発明の整圧器は、流体流路を流れる流体の整圧動作を行う整圧部と、前記流体流路を間にして前記整圧部に対向する位置に前記整圧部と一体的に設けられ、前記流体流路を流れる流体の圧力上昇を前記整圧部と実質的に同一位置において検出することによりリリーフ動作を行うリリーフ弁部とを備えたものである。   The pressure regulator according to the present invention is provided integrally with the pressure regulating unit at a position facing the pressure regulating unit with the fluid channel interposed therebetween, and a pressure regulating unit that performs a pressure regulating operation of the fluid flowing through the fluid channel. And a relief valve portion that performs a relief operation by detecting an increase in pressure of the fluid flowing through the fluid flow path at substantially the same position as the pressure regulating portion.

より具体的な第１の態様としては、配管に連通した流体流路を有すると共に底面に開口部を有する筺体と、前記筺体の開口部を塞ぐと共に前記流体流路に対面して貫通孔を有する底板と、前記筺体に内蔵され、前記流体流路を流れる流体の整圧動作を行う整圧部と、前記底板の前記整圧部とは反対側に設けられ、前記貫通孔を通して前記流体の圧力上昇を検出することによりリリーフ動作を行うリリーフ弁部とを備えた構成を有する。   As a more specific first aspect, a housing having a fluid flow path communicating with the piping and having an opening on the bottom surface, and closing the opening of the housing and facing the fluid flow path, has a through hole. A bottom plate, a pressure regulating portion built in the housing and performing a pressure regulating operation of the fluid flowing through the fluid flow path, and provided on the opposite side of the bottom plate from the pressure regulating portion, and the pressure of the fluid through the through hole And a relief valve portion that performs a relief operation by detecting a rise.

第２の態様としては、配管に連通した流体流路を有すると共に底面に開口部を有する筺体と、前記筺体の開口部を塞ぐと共に前記流体流路に対面して貫通孔を有する底板と、前記筺体に内蔵され、前記流体流路を流れる流体の整圧動作を行う整圧部と、前記底板の前記整圧部とは反対側に設けられ、前記貫通孔に連通した導通管と、前記導通管を通して前記流体の圧力上昇を検出することによりリリーフ動作を行うリリーフ弁部とを備えた構成を有している。   As a second aspect, the housing having a fluid flow path communicating with the pipe and having an opening on the bottom surface, the bottom plate closing the opening of the housing and facing the fluid flow path and having a through hole, A pressure regulating part that is built in the housing and performs pressure regulating operation of the fluid flowing through the fluid flow path; a conduction pipe that is provided on the opposite side of the pressure regulating part of the bottom plate and communicates with the through hole; and the conduction And a relief valve portion that performs a relief operation by detecting an increase in the pressure of the fluid through the pipe.

本発明の整圧器では、第１および第２の態様ともに、底板を間にして整圧部とリリーフ弁部が一体的に設けられており、配管中の同じ位置において、整圧部により配管内を流れる流体の整圧動作が行われる一方、リリーフ弁部によって流体の異常圧力の発生が検知されリリーフ動作が行われる。なお、第１の態様では、底板を筺体に対して着脱可能に設けるようにすれば、リリーフ弁部が底板と共に筺体に対して着脱自在となり、その交換等が容易になる。また、第２の態様では、導通管を底板に対して着脱可能に設けるようにすれば、リリーフ弁部が導通管と共に底板に対して着脱自在となり、その交換等が容易になる。   In the pressure regulator of the present invention, in both the first and second aspects, the pressure regulating portion and the relief valve portion are integrally provided with the bottom plate in between, and at the same position in the piping, While the pressure regulating operation of the fluid flowing through the fluid is performed, the relief valve unit detects the occurrence of abnormal fluid pressure and performs the relief operation. In the first aspect, when the bottom plate is provided so as to be detachable from the housing, the relief valve portion can be attached to and detached from the housing together with the bottom plate, and the exchange and the like are facilitated. In the second aspect, if the conducting pipe is provided so as to be detachable from the bottom plate, the relief valve part can be attached to and detached from the bottom plate together with the conducting pipe, and the exchange or the like is facilitated.

本発明の整圧器によれば、流体流路を間にして整圧部とリリーフ弁部を一体的に設け、１のユニットで整圧機能とリリーフ機能とを持たせるようにしたので、簡易な構造でユニットの全長が短くなり、交換や配管への取り付けの手間が掛からず、かつ十分な動作精度を確保することができる。   According to the pressure regulator of the present invention, the pressure regulating portion and the relief valve portion are integrally provided with the fluid flow path therebetween, and the pressure regulating function and the relief function are provided in one unit. The overall length of the unit is shortened due to the structure, and there is no need for replacement and installation on the pipe, and sufficient operation accuracy can be ensured.

以下、本発明の実施の形態について図面を参照して詳細に説明する。
〔第１の実施の形態〕
図１および図２は、本発明の第１の実施の形態に係る整圧器１の構成を表すものであり、図１はガスメータ２の近傍に配置された整圧器１の概要構成、図２はこの整圧器１の内部構成を模式的に表したものである。この整圧器１はガスメータ２の上流側において整圧動作を行うと共に、二次側の圧力が異常に上昇した場合にその圧力を開放してリリーフ動作を行うものであり、ＨＲ（ハウスレギュレータ）兼リリーフ弁として用いられる。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[First Embodiment]
1 and 2 show the configuration of the pressure regulator 1 according to the first embodiment of the present invention. FIG. 1 is a schematic configuration of the pressure regulator 1 arranged in the vicinity of the gas meter 2, and FIG. The internal structure of this pressure regulator 1 is typically represented. The pressure regulator 1 performs a pressure regulation operation on the upstream side of the gas meter 2 and performs a relief operation by releasing the pressure when the secondary pressure rises abnormally. Used as a relief valve.

整圧器本体１１は、図２に示したように、筺体１２の内部に整圧部１３を収容したものである。筺体１２の内部には配管３（図１）に連通した流路１４が設けられると共に整圧室１５が設けられている。流路１４は、隔壁１６により一次側（上流側）と二次側（下流側）とに仕切られており、その隔壁１６には開口部（弁孔）１６ａが設けられている。整圧室１５は連通路１７を介して流路１４の二次側と連通しており、その内部はダイヤフラム１８により大気室１５Ａとガス室１５Ｂとに分離されている。大気室１５Ａでは二次圧設定用スプリング１９の一方の端部が筺体１２の頂部に固定され、この二次圧設定用スプリング１９の他方の端部がダイヤフラム１８に取り付けられている。ダイヤフラム１８には流路１４において整圧用弁体２０が連動するようになっている。すなわち、二次側のガス圧の大きさに応じてこのダイヤフラム１８が変位し、これに連動して整圧用弁体２０により隔壁１６の開口部１６ａの開度が調整、すなわち、流れるガスＧの整圧がなされるようになっている。以上のダイヤフラム１８、二次圧設定用スプリング１９および整圧用弁体２０によって上記整圧部１３が構成されている。   As shown in FIG. 2, the pressure regulator main body 11 is a housing in which the pressure regulator 13 is accommodated in the housing 12. Inside the housing 12, a flow path 14 communicating with the pipe 3 (FIG. 1) is provided, and a pressure regulating chamber 15 is provided. The flow path 14 is partitioned into a primary side (upstream side) and a secondary side (downstream side) by a partition wall 16, and the partition wall 16 is provided with an opening (valve hole) 16a. The pressure regulating chamber 15 communicates with the secondary side of the flow path 14 through the communication path 17, and the inside thereof is separated into an atmospheric chamber 15 </ b> A and a gas chamber 15 </ b> B by a diaphragm 18. In the atmospheric chamber 15 </ b> A, one end of the secondary pressure setting spring 19 is fixed to the top of the housing 12, and the other end of the secondary pressure setting spring 19 is attached to the diaphragm 18. A pressure regulating valve body 20 is interlocked with the diaphragm 18 in the flow path 14. That is, the diaphragm 18 is displaced according to the magnitude of the gas pressure on the secondary side, and the opening of the opening 16a of the partition wall 16 is adjusted by the pressure regulating valve body 20 in conjunction with this, that is, the flowing gas G Pressure regulation is made. The diaphragm 18, the secondary pressure setting spring 19 and the pressure regulating valve body 20 constitute the pressure regulating section 13.

筺体１２の底部は開口されており、その開口部には底板２１がビス２２ａ，２２ｂによって所謂ビス止めされている。底板２１には図３に取り出して示したように、流路１４に通ずる貫通孔２１ａが設けられている。   The bottom of the housing 12 is opened, and a bottom plate 21 is screwed to the opening by screws 22a and 22b. As illustrated in FIG. 3, the bottom plate 21 is provided with a through hole 21 a that communicates with the flow path 14.

上記リリーフ動作を行うリリーフ部２３は、この底板２１の背面側に、その底板２１を自らの筺体２４の構成部位の一部として共有して設けられている。このリリーフ部２３の筺体２４内には、例えばダイヤフラム方式のリリーフ弁機構が内蔵されている。すなわち、筺体２４内はダイヤフラム２５により大気室２４Ａとガス室２４Ｂとに分離されると共に、隔壁２６によりガス室２４Ｂと大気室２４Ｃとに分離されている。隔壁２６には開口部（弁孔）２６ａが設けられており、常時はリリーフ用の弁体２８により閉鎖されている。   The relief part 23 that performs the relief operation is provided on the back side of the bottom plate 21 so that the bottom plate 21 is shared as a part of the constituent parts of the housing 24 of its own. For example, a diaphragm type relief valve mechanism is incorporated in the housing 24 of the relief portion 23. That is, the inside of the housing 24 is separated into the atmospheric chamber 24A and the gas chamber 24B by the diaphragm 25, and is separated into the gas chamber 24B and the atmospheric chamber 24C by the partition wall 26. The partition wall 26 is provided with an opening (valve hole) 26a and is normally closed by a relief valve element 28.

大気室２４Ａではリリーフ圧設定用スプリング２７の一方の端部が筺体２４の底部に固定され、このリリーフ圧設定用スプリング２７の他方の端部がダイヤフラム２５に取り付けられている。ダイヤフラム２５には弁体２８が連動するようになっている。すなわち、二次側のガス圧が異常に上昇した場合には、ダイヤフラム２５と共に弁体２８がリリーフ圧設定用スプリング２７の設定圧に抗して下降し、これにより隔壁２６の開口部２６ａが開放され、異常なガス圧が大気室２４Ｃから放散管２９を通じて放散されるようになっている。以上の筺体２４内のダイヤフラム２５、リリーフ圧設定用スプリング２７および弁体２８によってリリーフ部２３が構成されている。   In the atmosphere chamber 24 </ b> A, one end of the relief pressure setting spring 27 is fixed to the bottom of the housing 24, and the other end of the relief pressure setting spring 27 is attached to the diaphragm 25. A valve element 28 is interlocked with the diaphragm 25. That is, when the gas pressure on the secondary side rises abnormally, the valve element 28 moves down against the set pressure of the relief pressure setting spring 27 together with the diaphragm 25, thereby opening the opening 26a of the partition wall 26. Thus, an abnormal gas pressure is diffused from the atmospheric chamber 24C through the radiation pipe 29. A relief portion 23 is constituted by the diaphragm 25, the relief pressure setting spring 27, and the valve body 28 in the housing 24 described above.

次に、本実施の形態の整圧器１の作用・効果について説明する。   Next, the operation and effect of the pressure regulator 1 of the present embodiment will be described.

この整圧器１では、上述のようにダイヤフラム１８、二次圧設定用スプリング１９および整圧用弁体２０によって構成される整圧部１３によって上流側から供給されるガスＧの整圧動作がなされると共に、何らかの要因で二次圧力が異常に高くなった場合にはリリーフ動作が行われる。すなわち、リリーフ部２３において、ダイヤフラム２５がリリーフ圧設定用スプリング２７を押し下げ、その動きに連動して弁体２８が下降し、隔壁２６の開口部２６ａが開放される。その結果、異常なガス圧が開口部２６ａ、大気室２４Ｃから放散管２９を通じて放散される。これにより、二次側圧力が設定値以上に上昇しないように保たれる。   In the pressure regulator 1, the pressure regulation operation of the gas G supplied from the upstream side is performed by the pressure regulation unit 13 constituted by the diaphragm 18, the secondary pressure setting spring 19, and the pressure regulation valve body 20 as described above. At the same time, when the secondary pressure becomes abnormally high for some reason, a relief operation is performed. That is, in the relief portion 23, the diaphragm 25 pushes down the relief pressure setting spring 27, and the valve body 28 descends in conjunction with the movement, and the opening 26 a of the partition wall 26 is opened. As a result, abnormal gas pressure is dissipated through the diffusion tube 29 from the opening 26a and the atmospheric chamber 24C. This keeps the secondary pressure from rising above the set value.

このように本実施の形態では、底板２１を共有してその上下に整圧部１３とリリーフ部２３とを一体的に備えているので、この整圧器１のガスメータ２に対する面間距離Ｌｉは、従来のＨＲとリリーフ弁とを配管方向に直列してなるユニットの面間距離Ｌｐ（図７参照）よりも大幅に短くなる。従って、ガスメータ２の設置場所にスペースが狭いなどの設置条件に制約があったとしても、整圧器１を容易に設置することができ、その自由度が高くなる。また、整圧器１全体が小型な（短い）ものとなっているので、その取り扱いや搬送等が容易になるという利点もある。   As described above, in the present embodiment, the bottom plate 21 is shared, and the pressure regulating unit 13 and the relief unit 23 are integrally provided above and below the bottom plate 21, and therefore the inter-surface distance Li of the pressure regulator 1 to the gas meter 2 is This is significantly shorter than the inter-surface distance Lp (see FIG. 7) of the unit in which the conventional HR and the relief valve are arranged in series in the piping direction. Therefore, even if there are restrictions on the installation conditions such as the space where the gas meter 2 is installed, the pressure regulator 1 can be easily installed, and the degree of freedom is increased. In addition, since the pressure regulator 1 as a whole is small (short), there is also an advantage that its handling and transportation are easy.

また、リリーフ弁部２３は、整圧器本体１１の筺体１２に内蔵されて一体化されているのではなく、筺体１２とは別個の筺体２４に覆われた状態で底板２１を介して整圧器本体１１と一体化されているので、従来の内蔵方式（図６参照）の場合のような、筺体１２内の限られたスペースに収容しなければならないという制約を受けなくて済む。   The relief valve portion 23 is not built in and integrated with the housing 12 of the pressure regulator body 11, but is covered with a housing 24 separate from the housing 12, and the pressure regulator body via the bottom plate 21. 11, there is no need to be constrained to be accommodated in a limited space in the housing 12 as in the case of a conventional built-in method (see FIG. 6).

また、リリーフ弁部２３は狭い筺体１２内に追加しなくてもよいので、リリーフ弁部２３の動作精度を、少なくとも別付け方式と同程度にまで高いものとすることができる。あるいは、この整圧器１では、整圧部１３とリリーフ弁部２３とが底板２１を共有してほぼ同位置でガスの圧力に対応した動作を行うことになるので、整圧器本体とリリーフ弁部とを別付けで直列的に配置した従来の構成の場合（図７）よりも、両者がさらに高精度な信頼性の高い動作を実現することも期待される。   Moreover, since the relief valve part 23 does not need to be added in the narrow housing 12, the operation accuracy of the relief valve part 23 can be made at least as high as that of the attachment system. Alternatively, in the pressure regulator 1, the pressure regulator 13 and the relief valve 23 share the bottom plate 21 and perform an operation corresponding to the gas pressure at substantially the same position. It is also expected that both of them realize higher-accuracy and more reliable operation than in the case of the conventional configuration in which the two are separately arranged in series (FIG. 7).

本実施の形態では、また、図１に示したように、筺体１２に設けられたタップ３０ａ，３０ｂに対してビス２２ａ，２２ｂを捩じ込んで底板２１を筺体１２に固定することによって、底板２１と共にリリーフ弁部２３を整圧器本体１１に取り付けることができる。あるいは逆に、ビス２２ａ，２２ｂを緩めることによって、底板２１をリリーフ弁部２３と共に整圧器本体１１の筺体１２から取り外すこともでき、よって故障修理作業等が容易になる。   In the present embodiment, as shown in FIG. 1, the bottom plate 21 is fixed to the housing 12 by screwing screws 22 a and 22 b into the taps 30 a and 30 b provided on the housing 12 to fix the bottom plate 21 to the housing 12. The relief valve part 23 can be attached to the pressure regulator main body 11 together with 21. Or, conversely, by loosening the screws 22a and 22b, the bottom plate 21 can be removed together with the relief valve portion 23 from the housing 12 of the pressure regulator main body 11, thereby facilitating repair work and the like.

〔第２の実施の形態〕
図５は、本発明の第２の実施の形態に係る整圧器４が設置されたガスメータ近傍の概要構成を表したものである。 [Second Embodiment]
FIG. 5 shows a schematic configuration in the vicinity of the gas meter in which the pressure regulator 4 according to the second embodiment of the present invention is installed.

この整圧器４は、上記第１の実施の形態と同様に、整圧器本体１１と、リリーフ弁部２３とを備えているが、リリーフ弁部２３が圧力の導通を行うための導通管３２を介して底板２１に取り付けられている点において第１の実施の形態と異なる。すなわち、この整圧器４では、整圧器本体１１の底板２１の背面に、導通管３２を介してリリーフ弁部２３が縦に起立した状態で設けられており、整圧器本体１１で整圧を行い、リリーフ弁部２３でリリーフ動作を行う。その動作は、導通管３２を通じて二次側の圧力を検出すること以外は、第１の実施の形態と同様であるので、その説明は省略する。   Similar to the first embodiment, the pressure regulator 4 includes the pressure regulator body 11 and the relief valve portion 23. However, the pressure regulator 4 includes a conducting pipe 32 for conducting the pressure conduction. It differs from 1st Embodiment in the point attached to the baseplate 21 via. That is, in the pressure regulator 4, the relief valve portion 23 is provided vertically on the back surface of the bottom plate 21 of the pressure regulator body 11 through the conduction pipe 32, and pressure regulation is performed by the pressure regulator body 11. Then, the relief operation is performed by the relief valve portion 23. Since the operation is the same as that of the first embodiment except that the secondary pressure is detected through the conducting tube 32, the description thereof is omitted.

導通管３２は、底板２１に対して着脱可能に設けられている。具体的には、底板２１には捩じ込み用のタップ（図示省略）が刻まれていて、そのタップに対して導通管３２の表面に刻まれた捩子山を捩じ込むことで、導通管３２が底板２１に組み付けられる。底板２１は、第１の実施の形態と同様に、整圧器本体１１の筺体１２にねじ止めされる。このような構成により、リリーフ弁部２３を整圧器本体１１の底板２１に対して着脱することが可能となる。   The conducting tube 32 is detachably provided on the bottom plate 21. Specifically, a screw tap (not shown) is engraved on the bottom plate 21, and a screw thread carved on the surface of the conducting tube 32 is screwed into the tap so as to conduct electricity. The tube 32 is assembled to the bottom plate 21. The bottom plate 21 is screwed to the housing 12 of the pressure regulator body 11 as in the first embodiment. With such a configuration, the relief valve portion 23 can be attached to and detached from the bottom plate 21 of the pressure regulator body 11.

このような第２の実施の形態の整圧器４でも、上記第１の実施の形態と同様に、底板２１を共有してその上下に整圧器本体１１とリリーフ弁部２３とを一体化させているので、この整圧器４の面間距離Ｌｉを大幅に短くできる、等の効果は第１の実施の形態と同様である。   In the pressure regulator 4 of the second embodiment as well, as in the first embodiment, the bottom plate 21 is shared and the pressure regulator body 11 and the relief valve portion 23 are integrated on the top and bottom thereof. Therefore, the effect that the inter-surface distance Li of the pressure regulator 4 can be significantly shortened is the same as that of the first embodiment.

なお、上記第１および第２の実施の形態では、本発明に係る整圧器を都市ガスの整圧に用いる場合を想定して説明したが、本発明の適用は都市ガスのみには限定されないことは勿論である。この他にも、例えばＬＰガス用の整圧器としても適用可能であり、更にガスに限らず、流体一般の整圧に利用することも可能である。その他、本発明の趣旨を逸脱しない範囲で種々の変形が可能であることは言うまでもない。   Although the first and second embodiments have been described assuming that the pressure regulator according to the present invention is used for pressure regulation of city gas, the application of the present invention is not limited to city gas only. Of course. In addition to this, it can also be applied as a pressure regulator for LP gas, for example, and can be used not only for gas but also for pressure regulation of general fluids. In addition, it goes without saying that various modifications are possible without departing from the spirit of the present invention.

本発明の第１の実施の形態に係る整圧器が設置されたガスメータ近傍の概要構成を表した正面図である。It is a front view showing the schematic structure of the gas meter vicinity in which the pressure regulator which concerns on the 1st Embodiment of this invention was installed. 図１に示した整圧器の内部構成を表す模式図である。It is a schematic diagram showing the internal structure of the pressure regulator shown in FIG. 図１に示した整圧器の低板の構成を表す平面図である。It is a top view showing the structure of the low board of the pressure regulator shown in FIG. 本発明の第２の実施の形態に係る整圧器が設置されたガスメータ近傍の概要構成を表した正面図である。It is a front view showing the schematic structure of the gas meter vicinity in which the pressure regulator which concerns on the 2nd Embodiment of this invention was installed. 従来のリリーフ弁を備えた整圧器の内部構成を説明するための模式図である。It is a schematic diagram for demonstrating the internal structure of the pressure regulator provided with the conventional relief valve. ＨＲとリリーフ弁とを配管方向に直列配置してなる従来のユニット構成の一例を表した正面図である。It is the front view showing an example of the conventional unit composition formed by arranging HR and a relief valve in series in the piping direction.

符号の説明Explanation of symbols

１…整圧器、２…ガスメータ、３…配管、１１…整圧器本体、１２，２４…筺体、
１３…整圧部、１４…流路、２１…底板、２１ａ…貫通孔、２３…リリーフ弁部
DESCRIPTION OF SYMBOLS 1 ... Pressure regulator, 2 ... Gas meter, 3 ... Piping, 11 ... Pressure regulator main body, 12, 24 ... Housing,
DESCRIPTION OF SYMBOLS 13 ... Pressure regulation part, 14 ... Flow path, 21 ... Bottom plate, 21a ... Through-hole, 23 ... Relief valve part

Claims (5)

流体流路を流れる流体の整圧動作を行う整圧部と、
前記流体流路を間にして前記整圧部に対向する位置に前記整圧部と一体的に設けられ、前記流体流路を流れる流体の圧力上昇を前記整圧部と実質的に同一位置において検出することによりリリーフ動作を行うリリーフ弁部と
を備えたことを特徴とする整圧器。 A pressure regulating unit that performs pressure regulating operation of the fluid flowing through the fluid flow path;
The pressure regulating unit is provided integrally with the pressure regulating unit at a position facing the pressure regulating unit with the fluid channel interposed therebetween, and the pressure increase of the fluid flowing through the fluid channel is substantially the same as the pressure regulating unit. And a relief valve portion that performs a relief operation by detecting the pressure regulator. 配管に連通した流体流路を有すると共に底面に開口部を有する筺体と、
前記筺体の開口部を塞ぐと共に前記流体流路に対面して貫通孔を有する底板と、
前記筺体に内蔵され、前記流体流路を流れる流体の整圧動作を行う整圧部と、
前記底板の前記整圧部とは反対側に設けられ、前記貫通孔を通して前記流体の圧力上昇を検出することによりリリーフ動作を行うリリーフ弁部と
を備えたことを特徴とする整圧器。 A housing having a fluid flow path communicating with the piping and having an opening on the bottom surface;
A bottom plate that closes the opening of the housing and has a through hole facing the fluid flow path;
A pressure regulating unit built in the housing and performing a pressure regulating operation of the fluid flowing through the fluid flow path;
A pressure regulator, comprising: a relief valve portion that is provided on the opposite side of the bottom plate from the pressure regulating portion and performs a relief operation by detecting an increase in pressure of the fluid through the through hole. 配管に連通した流体流路を有すると共に底面に開口部を有する筺体と、
前記筺体の開口部を塞ぐと共に前記流体流路に対面して貫通孔を有する底板と、
前記筺体に内蔵され、前記流体流路を流れる流体の整圧動作を行う整圧部と、
前記底板の前記整圧部とは反対側に設けられ、前記貫通孔に連通した導通管と、
前記導通管を通して前記流体の圧力上昇を検出することによりリリーフ動作を行うリリーフ弁部と
を備えたことを特徴とする整圧器。 A housing having a fluid flow path communicating with the piping and having an opening on the bottom surface;
A bottom plate that closes the opening of the housing and has a through hole facing the fluid flow path;
A pressure regulating unit built in the housing and performing a pressure regulating operation of the fluid flowing through the fluid flow path;
A conductive pipe provided on the opposite side of the pressure regulating portion of the bottom plate and communicating with the through hole;
A pressure regulator comprising: a relief valve portion that performs a relief operation by detecting an increase in pressure of the fluid through the conducting pipe. 前記底板は、前記筺体に対して着脱可能に設けられている
ことを特徴とする請求項１ないし３のいずれか１項に記載の整圧器。 The pressure regulator according to any one of claims 1 to 3, wherein the bottom plate is detachably attached to the housing. 前記導通管は、前記底板に対して着脱可能に設けられている
ことを特徴とする請求項３記載の整圧器。
The pressure regulator according to claim 3, wherein the conducting tube is detachably attached to the bottom plate.
JP2004129529A 2004-04-26 2004-04-26 Pressure regulator Expired - Lifetime JP4428700B2 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010528349A (en) * 2007-04-23 2010-08-19 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Modular regulator platform

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010528349A (en) * 2007-04-23 2010-08-19 フィッシャー コントロールズ インターナショナル リミテッド ライアビリティー カンパニー Modular regulator platform

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