JP3040627U - Pressure reducing valve - Google Patents
Pressure reducing valveInfo
- Publication number
- JP3040627U JP3040627U JP1997000611U JP61197U JP3040627U JP 3040627 U JP3040627 U JP 3040627U JP 1997000611 U JP1997000611 U JP 1997000611U JP 61197 U JP61197 U JP 61197U JP 3040627 U JP3040627 U JP 3040627U
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- Prior art keywords
- pressure
- diaphragm chamber
- diaphragm
- valve
- flow passage
- 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.)
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Abstract
(57)【要約】
【課題】 減圧弁の設定圧力の安定化と流量特定の改善
を行うことを目的とする。
【解決手段】 流路中に起立させた隔壁の先端に形成し
た弁座と、弁座に対向して配置した主弁と、隔壁の近傍
に設けたダイヤフラムを張設したダイヤフラム室と、隔
壁より下流側の二次側流路とダイヤフラム室とを連通す
る圧力導入孔と、前記主弁に固着されダイヤフラム室に
進退自在に設けられたステムとよりなり、二次側流路よ
り圧力導入孔を経て伝達されたダイヤフラム室の圧力に
より前記弁座を主弁により開閉するようにした減圧弁に
おいて、二次側流路とダイヤフラム室とを連通する圧力
導入孔を複数個設けてなる減圧弁とした。
(57) [Abstract] [PROBLEMS] To stabilize the set pressure of a pressure reducing valve and improve the flow rate specification. SOLUTION: A valve seat formed at the tip of a partition wall standing upright in a flow path, a main valve arranged to face the valve seat, a diaphragm chamber in the vicinity of the partition wall in which a diaphragm is stretched, and a partition wall A pressure introducing hole that connects the downstream side flow passage on the downstream side and the diaphragm chamber, and a stem that is fixed to the main valve and is movable back and forth in the diaphragm chamber. A pressure reducing valve in which the valve seat is opened and closed by the main valve by the pressure of the diaphragm chamber transmitted through the pressure reducing valve, which is provided with a plurality of pressure introducing holes for communicating the secondary side flow passage and the diaphragm chamber. .
Description
【０００１】[0001]
本考案は、減圧弁に関し、特に設定圧力の安定化と流量特性を改善した減圧弁 についてのものである。 The present invention relates to a pressure reducing valve, and more particularly to a pressure reducing valve having stabilized set pressure and improved flow characteristics.
【０００２】[0002]
従来の減圧弁の一例を図３により説明する。 流路中に起立させた隔壁１０１の先端に形成した弁座１０２と、弁座１０２に 対向して配置した主弁１０３と、隔壁１０１の近傍に設けたダイヤフラム１０４ を張設したダイヤフラム室１０５と、隔壁１０１より下流側の二次側流路１０６ とダイヤフラム室１０５とを連通する圧力導入孔１０７と、前記主弁１０３に固 着されダイヤフラム室１０５に進退自在に設けられたステム１０９とよりなり、 二次側流路１０６より圧力導入孔１０７を経て伝達されたダイヤフラム室１０５ の圧力により前記弁座１０２を主弁１０３により開閉する。 An example of a conventional pressure reducing valve will be described with reference to FIG. A valve seat 102 formed at the tip of a partition wall 101 standing in the flow path, a main valve 103 arranged to face the valve seat 102, and a diaphragm chamber 105 in which a diaphragm 104 provided near the partition wall 101 is stretched. A pressure introducing hole 107 that connects the secondary flow passage 106 on the downstream side of the partition wall 101 to the diaphragm chamber 105, and a stem 109 fixed to the main valve 103 and provided in the diaphragm chamber 105 so as to move back and forth. The valve seat 102 is opened and closed by the main valve 103 by the pressure of the diaphragm chamber 105 transmitted from the secondary side flow passage 106 through the pressure introduction hole 107.
【０００３】 前記構成をより一層詳しく説明する。 本体１１１の流路の中間部に平面視でほぼ円弧状の隔壁１０１が起立してあっ て、その先端を弁座１０２に形成し、隔壁１０１の上流側を一次側流路１１２、 隔壁１０１の下流側を二次側流路１０６とし、流路は一次側流路１１２から二次 側流路１０６を経て形成されている。この流路を流れる空気を遮断あるいは流過 させるために主弁１０３が前記弁座１０２に対向して配置されている。The above configuration will be described in more detail. A partition wall 101 having a substantially arcuate shape in a plan view is erected in an intermediate portion of the flow path of the main body 111, and a tip of the partition wall 101 is formed on a valve seat 102. An upstream side of the partition wall 101 is a primary side flow path 112 and a partition wall 101. The downstream side is the secondary side flow passage 106, and the flow passage is formed from the primary side flow passage 112 through the secondary side flow passage 106. A main valve 103 is arranged so as to face the valve seat 102 in order to block or allow the air flowing through this flow path to flow.
【０００４】 主弁１０３はステム１０９にその段部１１３とＥリング１１４とに挟まれて固 着され、本体１１１の下壁１１８に固着されたバネ受け１１５に摺動自在に設け られ、主弁バネ１１６で付勢し前記弁座１０２に当接させている。 ステム１０９の図において上方の部分は本体１１１の上壁１１９を貫通してダ イヤフラム室１０５内に進退自在に設けられている。The main valve 103 is fixed to the stem 109 by being sandwiched between the step portion 113 and the E ring 114, and is slidably provided on a spring receiver 115 fixed to a lower wall 118 of the main body 111. It is urged by a spring 116 and abuts against the valve seat 102. The upper portion of the stem 109 in the drawing penetrates the upper wall 119 of the main body 111 and is provided in the diaphragm chamber 105 so as to be movable back and forth.
【０００５】 ダイヤフラム室１０５は本体１１１の上壁１１９上面と張設されたダイヤフラ ム１０４とにより構成され、ダイヤフラム１０４はその全周端部をボンネット１ １７により本体１１１の上壁１１９に押さえ付けられボルト１２８により螺締さ れている。 前記ダイヤフラム１０４はその中央部の上側にダイヤフラム受け１２０を当接 させ、ダイヤフラム１０４にリリーフ孔１０８を有するリリーフ弁シート１２１ を挿入してダイヤフラム受け１２０に螺着し、リリーフ孔１０８の開口にステム １０９の上端を当接させリリーフ孔１０８の開口を開閉可能とする。The diaphragm chamber 105 is composed of the upper surface of the upper wall 119 of the main body 111 and the stretched diaphragm 104, and the diaphragm 104 is pressed at its entire peripheral end portion to the upper wall 119 of the main body 111 by the bonnet 117. It is screwed by a bolt 128. The diaphragm 104 is brought into contact with the diaphragm receiver 120 on the upper side of the central portion thereof, and the relief valve seat 121 having the relief hole 108 is inserted into the diaphragm 104 and screwed into the diaphragm receiver 120, and the stem 109 is opened at the opening of the relief hole 108. The upper end of the relief hole 108 is brought into contact so that the opening of the relief hole 108 can be opened and closed.
【０００６】 ボンネット１１７内には圧力を設定するための調整バネ１２２が収容され、そ の下端をダイヤフラム受け１２０上面に当接させ、調整バネ１２２の上端を支持 板１２３下面に当接させ、ボンネット１１７の上部に螺着したハンドル１２４の 調整ネジ１２５の下端を支持板１２３の上面中央に当接させ、調整ネジ１２５を ねじ込み調整しダイヤフラム１０４に与える圧力を設定した後に調整ネジ１２５ に螺着した固定用ナット１２６で螺締し固定する。An adjusting spring 122 for setting a pressure is housed in the bonnet 117, the lower end of which is brought into contact with the upper surface of the diaphragm receiver 120, and the upper end of the adjusting spring 122 is brought into contact with the lower surface of the support plate 123, so that the bonnet The lower end of the adjusting screw 125 of the handle 124 screwed to the upper portion of 117 is brought into contact with the center of the upper surface of the support plate 123, and the adjusting screw 125 is screwed and adjusted to set the pressure applied to the diaphragm 104, and then screwed to the adjusting screw 125. The nut 126 for fixing is screwed and fixed.
【０００７】 符号１２７はボンネット１１７内の空気を大気に放出させるブリードである。 設定圧力の設定は、設定圧力の空気をダイヤフラム室１０５に導入して、ハン ドル１２４を回して調整バネ１２２を適度に圧縮してダイヤフラム１０４にバネ 力を与えて主弁１０３を閉めて行う。ダイヤフラム１０４の下面には二次側流路 １０６の空気圧が作用している。Reference numeral 127 is a bleed that releases the air in the bonnet 117 to the atmosphere. The set pressure is set by introducing air at the set pressure into the diaphragm chamber 105, rotating the handle 124 to appropriately compress the adjusting spring 122, and applying a spring force to the diaphragm 104 to close the main valve 103. Air pressure in the secondary side flow passage 106 acts on the lower surface of the diaphragm 104.
【０００８】 設定圧力より二次側流路１０６の圧力が高くなると、ダイヤフラム１０４を押 上げ、リリーフ弁シート１２１も上方へ移動してリリーフ弁シート１２１とステ ム１０９とは離れ、二次側流路１０６の増圧分がリリーフ弁シート１２１のリリ ーフ孔１０８からボンネット１１７内に流入し、ボンネット１１７のブリード１ ２７を通って大気に流出させ、設定圧力をオーバーしない構造となっている。When the pressure in the secondary side flow passage 106 becomes higher than the set pressure, the diaphragm 104 is pushed up, the relief valve seat 121 also moves upward, and the relief valve seat 121 and the stem 109 are separated from each other, and the secondary side flow The increased pressure in the passage 106 flows into the bonnet 117 from the relief hole 108 of the relief valve seat 121, flows out through the bleed 127 of the bonnet 117 into the atmosphere, and does not exceed the set pressure.
【０００９】 二次側流路１０６の空気が、空気圧シリンダが作動するなどして消費されると 、二次側流路１０６の圧力が降下し、ダイヤフラム室１０５の圧力も降下し、ダ イヤフラム１０４が下方に移動してステム１０９および主弁１０３を下方に移動 させ、弁座１０２は開き消費が止むまで一次側流路１１２から二次側流路１０６ へ空気が供給される。When the air in the secondary side flow passage 106 is consumed due to the operation of the pneumatic cylinder or the like, the pressure in the secondary side flow passage 106 drops, the pressure in the diaphragm chamber 105 also drops, and the diaphragm 104 Moves downward to move the stem 109 and the main valve 103 downward, the valve seat 102 is opened, and air is supplied from the primary side flow passage 112 to the secondary side flow passage 106 until consumption stops.
【００１０】 通常、減圧弁の圧力導入孔１０７は二次側流路１０６の変動を時間遅れを持た せてダイヤフラム室１０５に伝達し主弁１０３を開閉することにより設定圧力を 安定させている。Normally, the pressure introduction hole 107 of the pressure reducing valve stabilizes the set pressure by transmitting the fluctuation of the secondary side flow passage 106 to the diaphragm chamber 105 with a time delay and opening / closing the main valve 103.
【００１１】[0011]
通常、減圧弁の流量特性は、図４に示すように、それぞれの主弁の最大流量域 では、二次側流路の空気は音速に近くなるため、圧力導入孔にサイホン効果が過 剰に効き、ダイヤフラム室の圧力は二次側流路に引っ張られ逆に低下してくる。 そのため、各設定圧力のうち特に低圧力設定の最大流量域では、通例オーバー シュートと呼ばれる、設定圧力をオーバーする現象が出てくる。 Normally, as shown in Fig. 4, the flow rate characteristics of the pressure reducing valve are such that in the maximum flow rate range of each main valve, the air in the secondary side flow path is close to the speed of sound, so that the siphon effect is excessive in the pressure introduction hole. Effectively, the pressure in the diaphragm chamber is pulled by the secondary side flow passage and decreases conversely. Therefore, a phenomenon called overshooting, which is usually called overshoot, occurs in the maximum flow rate region of the set pressures, especially in the low pressure setting.
【００１２】 オーバーシュートを防止するため、圧力導入孔の孔径を小さくする方法がある が、二次側流路の空気圧を主弁にフィードバックさせるタイミングを狂わせ、主 弁の発振を助長したり、逆に最大流量域で圧力低下が激しくなるなどの問題があ る。There is a method of reducing the diameter of the pressure introducing hole to prevent overshoot, but the timing of feeding back the air pressure in the secondary side flow path to the main valve is disturbed to promote oscillation of the main valve, or Moreover, there is a problem that the pressure drop becomes severe in the maximum flow rate range.
【００１３】[0013]
そこで、本考案は上記の事情に鑑み、設定圧力の安定化と流量特性を改善すべ く、流路中に起立させた隔壁の先端に形成した弁座と、弁座に対向して配置した 主弁と、隔壁の近傍に設けたダイヤフラムを張設したダイヤフラム室と、隔壁よ り下流側の二次側流路とダイヤフラム室とを連通する圧力導入孔と、前記主弁に 固着されダイヤフラム室に進退自在に設けられたステムとよりなり、二次側流路 より圧力導入孔を経て伝達されたダイヤフラム室の圧力により前記弁座を主弁に より開閉するようにした減圧弁において、二次側流路とダイヤフラム室とを連通 する圧力導入孔を複数個設けてなる減圧弁とした。 Therefore, in view of the above circumstances, the present invention is designed to stabilize the set pressure and improve the flow rate characteristics, and a valve seat formed at the tip of the partition wall standing in the flow path and a main valve disposed opposite to the valve seat. The valve, a diaphragm chamber with a diaphragm installed near the partition, a pressure introducing hole that connects the secondary side flow path downstream of the partition with the diaphragm chamber, and the diaphragm chamber fixed to the main valve. In the pressure reducing valve, which is composed of a stem that can be advanced and retracted and is configured to open and close the valve seat with the main valve by the pressure of the diaphragm chamber transmitted from the secondary side flow path through the pressure introduction hole, The pressure reducing valve is provided with a plurality of pressure introducing holes that connect the flow passage and the diaphragm chamber.
【００１４】 二次側流路とダイヤフラム室とを複数個の圧力導入孔で連通させて、圧力変動 をできるだけ平坦化する。 また、本考案は、製作をできるだけ容易にするため圧力導入孔を２個とした。 さらに、本考案は二次側流路の圧力の変動を受けやすい上流側と下流側とそれ ぞれ１箇所に圧力導入孔を設けた。上流側圧力導入孔がダイヤフラム室への圧力 充填を受け持ち、下流側圧力導入孔はダイヤフラム室から二次側流路への圧力流 出を受け持って圧力変動の平坦化を行う。The pressure fluctuation is made as flat as possible by connecting the secondary side flow passage and the diaphragm chamber with each other through a plurality of pressure introducing holes. Further, the present invention has two pressure introducing holes in order to make production as easy as possible. Further, in the present invention, the pressure introducing holes are provided at the upstream side and the downstream side, which are susceptible to the fluctuation of the pressure of the secondary side flow passage, and at each one position. The upstream pressure introducing hole takes charge of filling the pressure in the diaphragm chamber, and the downstream pressure introducing hole takes charge of pressure outflow from the diaphragm chamber to the secondary side flow passage to flatten the pressure fluctuation.
【００１５】 さらにその上に、本考案の上流側圧力導入孔は、二次側流路とダイヤフラム室 とを区画する壁体に、壁体の厚さ方向に対して４５°上流側へ傾斜させて、空気 の通過距離をかせぐと共に、空気の二次側流路を通過する方向と逆方向に向けて 圧力変動の平坦化を行う。Furthermore, the upstream pressure introducing hole of the present invention is provided in the wall body that divides the secondary side flow passage and the diaphragm chamber by inclining to the upstream side by 45 ° with respect to the thickness direction of the wall body. As a result, the air passage distance is increased, and the pressure fluctuation is flattened in the direction opposite to the direction in which the air passes through the secondary flow path.
【００１６】[0016]
本考案を、添付する図面に示す具体的な実施例に基づいて、以下詳細に説明す る。 本考案の減圧弁を図１により説明する。 流路中に起立させた隔壁１の先端に形成した弁座２と、弁座２に対向して配置 した主弁３と、隔壁１の近傍に設けたダイヤフラム４を張設したダイヤフラム室 ５と、隔壁１より下流側の二次側流路６とダイヤフラム室５とを連通する圧力導 入孔７と、前記主弁３に固着されダイヤフラム室５に進退自在に設けられたステ ム９とよりなり、二次側流路６より圧力導入孔７を経て伝達されたダイヤフラム 室５の圧力により前記弁座２を主弁３により開閉する。 The present invention will be described in detail below based on specific embodiments shown in the accompanying drawings. The pressure reducing valve of the present invention will be described with reference to FIG. A valve seat 2 formed at the tip of a partition wall 1 standing in the flow path, a main valve 3 arranged to face the valve seat 2, and a diaphragm chamber 5 in which a diaphragm 4 provided near the partition wall 1 is stretched. The pressure inlet hole 7 that connects the secondary flow path 6 downstream of the partition wall 1 to the diaphragm chamber 5 and the stem 9 that is fixed to the main valve 3 and that is movable back and forth in the diaphragm chamber 5. Then, the valve seat 2 is opened and closed by the main valve 3 by the pressure of the diaphragm chamber 5 transmitted from the secondary side flow path 6 through the pressure introduction hole 7.
【００１７】 前記構成をより一層詳しく説明する。 本体１の流路の中間部に平面視でほぼ円弧状の隔壁１が起立してあって、その 先端を弁座２に形成し、隔壁１の上流側を一次側流路１２、隔壁１の下流側を二 次側流路６とし、流路は一次側流路１２から二次側流路６を経て形成されている 。この流路を流れる空気を遮断あるいは通過させるために主弁３が前記弁座２に 対向して配置されている。The above configuration will be described in more detail. A partition wall 1 having a substantially arcuate shape in a plan view is erected at an intermediate portion of the flow path of the main body 1, and a tip of the partition wall 1 is formed on a valve seat 2. An upstream side of the partition wall 1 includes a primary side flow path 12 and a partition wall 1. The downstream side is the secondary side flow path 6, and the flow path is formed from the primary side flow path 12 through the secondary side flow path 6. A main valve 3 is arranged opposite to the valve seat 2 in order to block or allow the air flowing through this flow path to pass.
【００１８】 主弁３はステム９にその段部１３とＥリング１４とに挟まれて固着され、本体 １１の下壁１８に固着されたバネ受け１５に摺動自在に設けられ、主弁バネ１６ で付勢し前記弁座２に当接させている。 ステム９の図において上方の部分は本体１１の上壁１９を貫通してダイヤフラ ム室５内に進退自在に設けられている。The main valve 3 is fixed to the stem 9 by being sandwiched between the step portion 13 and the E ring 14, and is slidably provided on a spring receiver 15 fixed to a lower wall 18 of the main body 11. The valve seat 2 is urged by 16 to be in contact with the valve seat 2. The upper portion of the stem 9 in the drawing penetrates the upper wall 19 of the main body 11 and is provided in the diaphragm chamber 5 so as to be movable back and forth.
【００１９】 ダイヤフラム室５は本体１１の上壁１９上面と張設されたダイヤフラム４とに より構成され、ダイヤフラム４はその全周端部をボンネット１７により本体１１ の上壁１９に押え付けられボルト２８により螺締されている。 前記ダイヤフラム４はその中央部の上側にダイヤフラム受け２０を当接させ、 ダイヤフラム４にリリーフ孔８を有するリリーフ弁シート２１を挿入してダイヤ フラム受け２０に螺着し、リリーフ孔８の開口にステム９の上端を当接させリリ ーフ孔８の開口を開閉可能とする。The diaphragm chamber 5 is composed of the upper surface of the upper wall 19 of the main body 11 and the diaphragm 4 stretched. The diaphragm 4 is pressed at its entire peripheral end portion by the bonnet 17 to the upper wall 19 of the main body 11 and bolts. It is screwed by 28. The diaphragm 4 is brought into contact with the diaphragm receiver 20 on the upper side of the central portion thereof, the relief valve seat 21 having the relief hole 8 is inserted into the diaphragm 4 and screwed into the diaphragm receiver 20, and the stem of the relief hole 8 is opened. The upper end of 9 is brought into contact so that the opening of the relief hole 8 can be opened and closed.
【００２０】 ボンネット１７内には圧力を設定するための調整バネ２２が収容され、その下 端をダイヤフラム受け２０上面に当接させ、調整バネ２２の上端を支持板２３下 面に当接させ、ボンネット１７の上部に螺着したハンドル２４の調整ネジ２５の 下端を支持板２３の上面中央に当接させ、調整ネジ２５をねじ込み調整しダイヤ フラム４に与える圧力を設定した後に調整ネジ２５に螺着した固定用ナット２６ で螺締し固定する。An adjustment spring 22 for setting pressure is housed in the bonnet 17, the lower end of which is brought into contact with the upper surface of the diaphragm receiver 20, and the upper end of the adjustment spring 22 is brought into contact with the lower surface of the support plate 23. The lower end of the adjusting screw 25 of the handle 24 screwed onto the upper part of the bonnet 17 is brought into contact with the center of the upper surface of the support plate 23, and the adjusting screw 25 is screwed and adjusted to set the pressure applied to the diaphragm 4, and then the adjusting screw 25 is screwed. It is fixed by screwing it with the attached fixing nut 26.
【００２１】 符号２７はボンネット１７内の空気を大気に放出させるブリードである。 設定圧力の設定は、設定圧力の空気をダイヤフラム室５に導入して、ハンドル ２４を回して調整バネ２２を適度に圧縮してダイヤフラム４にバネ力を与えて主 弁３を閉めて行う。ダイヤフラム４の下面には二次側流路６の空気圧が作用して いる。Reference numeral 27 is a bleed that releases the air in the bonnet 17 to the atmosphere. The set pressure is set by introducing air of the set pressure into the diaphragm chamber 5, turning the handle 24 to appropriately compress the adjusting spring 22 and applying a spring force to the diaphragm 4 to close the main valve 3. Air pressure in the secondary side flow passage 6 acts on the lower surface of the diaphragm 4.
【００２２】 設定圧力より二次側流路６の圧力が高くなると、ダイヤフラム４を押し上げ、 リリーフ弁シート２１も上方へ移動してリリーフ弁シート２１とステム９とは離 れ、二次側流路６の増圧分がリリーフ弁シート２１のリリーフ孔８からボンネッ ト１７内に流入し、ボンネット１７のブリード２７を通って大気に流出させ、設 定圧力をオーバーしない構造となっている。When the pressure in the secondary side flow passage 6 becomes higher than the set pressure, the diaphragm 4 is pushed up, the relief valve seat 21 also moves upward, the relief valve seat 21 and the stem 9 are separated, and the secondary side flow passage The increased pressure of 6 flows into the bonnet 17 from the relief hole 8 of the relief valve seat 21, flows out to the atmosphere through the bleed 27 of the bonnet 17, and does not exceed the set pressure.
【００２３】 二次側流路６の空気が、空気圧シリンダが作動するなどして消費されると、二 次側流路６の圧力が降下し、ダイヤフラム室５の圧力も降下し、ダイヤフラム４ が下方に移動してステム９および主弁３を下方に移動させ、弁座２は開き消費が 止むまで一次側流路１２から二次側流路６へ空気が供給される。 本考案では、二次側流路６とダイヤフラム室５とを複数個の圧力導入孔で連通 させて圧力変動をできるだけ平坦化する。When the air in the secondary side flow passage 6 is consumed by the operation of the pneumatic cylinder, the pressure in the secondary side flow passage 6 drops, the pressure in the diaphragm chamber 5 also drops, and the diaphragm 4 By moving downward, the stem 9 and the main valve 3 are moved downward, the valve seat 2 is opened, and air is supplied from the primary side flow passage 12 to the secondary side flow passage 6 until consumption is stopped. In the present invention, the secondary side flow path 6 and the diaphragm chamber 5 are communicated with each other through a plurality of pressure introducing holes to flatten the pressure fluctuation as much as possible.
【００２４】 また、本考案は、製作をできるだけ容易にするため圧力導入孔を２個とした。 さらに、本考案は、二次側流路６の圧力の変動を受けやすい上流側と下流側と それぞれ１箇所に圧力導入孔を設けた。上流側圧力導入孔３１がダイヤフラム室 ５への圧力充填を受け持ち、下流側圧力導入孔７はダイヤフラム室５から二次側 流路６への圧力流出を受け持って圧力変動の平坦化を行う。Further, the present invention has two pressure introducing holes in order to make production as easy as possible. Further, in the present invention, the pressure introduction holes are provided at one location on each of the upstream side and the downstream side, which are susceptible to the fluctuation of the pressure of the secondary side flow path 6. The upstream side pressure introducing hole 31 is responsible for pressure filling of the diaphragm chamber 5, and the downstream side pressure introducing hole 7 is responsible for pressure outflow from the diaphragm chamber 5 to the secondary side flow passage 6 to flatten the pressure fluctuation.
【００２５】 さらにその上に、本考案は上流側圧力導入孔３１は、二次側流路６とダイヤフ ラム室５とを区画する上壁１９に、上壁１９の厚さ方向に対して４５°上流側へ 傾斜させて、空気の通過距離をかせぐと共に、空気の二次側流路６を通過する方 向と逆方向に向けて圧力変動の平坦化を行う。また、上流側圧力導入孔３１の４ ５°方向の穿設は機械加工もしやすい。Furthermore, according to the present invention, the upstream side pressure introducing hole 31 is formed in the upper wall 19 which divides the secondary side flow path 6 and the diaphragm chamber 5 into 45 in the thickness direction of the upper wall 19. Inclining to the upstream side to increase the air passage distance and flatten pressure fluctuations in the direction opposite to the direction in which the air passes through the secondary flow path 6. In addition, the upstream pressure introducing hole 31 can be machined easily in the 45 ° direction.
【００２６】 従来の減圧弁と本考案の減圧弁との流量特性を図２に示す。二次側流路６の流 量と圧力との関係で横軸が流量、縦軸が圧力を示す。設定圧力は１ｋｇｆ／ｃｍ 2 で従来の減圧弁を黒丸印で、本考案の減圧弁を四角印で示す。 従来の減圧弁は流量が増えると最初僅かに減少するが、すぐ増加し出して設定 圧力をオーバーし、オーバーシュートの現象が現れ、最大１．７ｋｇｆ／ｃｍ2 にも達する。FIG. 2 shows the flow rate characteristics of the conventional pressure reducing valve and the pressure reducing valve of the present invention. The horizontal axis represents the flow rate and the vertical axis represents the pressure in the relationship between the flow rate and the pressure in the secondary side flow path 6. Set pressure is 1 kgf / cm Two The conventional pressure reducing valve is indicated by a black circle and the pressure reducing valve of the present invention is indicated by a square. With the conventional pressure reducing valve, the flow rate increases slightly at first, but it immediately increases, exceeds the set pressure, and the phenomenon of overshoot appears, with a maximum of 1.7 kgf / cm.Two Also reaches.
【００２７】 これに対して、本考案の減圧弁では、流量が増えるに従い僅か圧力が減少し、 最大流量域で僅かにオーバーシュート現象が現れ、その最大値も１．１ｋｇｆ／ ｃｍ2 程度で、設定圧力の安定化と流量特性の改善がなされる。 以上は、直動型の減圧弁について述べたが、パイロット型の減圧弁でも全く同 様に適用できる。On the other hand, in the pressure reducing valve of the present invention, the pressure slightly decreases as the flow rate increases, and a slight overshoot phenomenon appears in the maximum flow rate region, and the maximum value is about 1.1 kgf / cm 2 . The set pressure is stabilized and the flow rate characteristics are improved. Although the direct-acting type pressure reducing valve has been described above, the pilot type pressure reducing valve can be applied in exactly the same manner.
【００２８】[0028]
本考案は、上述のように、流路中に起立させた隔壁の先端に形成した弁座と、 弁座に対向して配置した主弁と、隔壁の近傍に設けたダイヤフラムを張設したダ イヤフラム室と、隔壁より下流側の二次側流路とダイヤフラム室とを連通する圧 力導入孔と、前記主弁に固着されダイヤフラム室に進退自在に設けられたステム とよりなり、二次側流路より圧力導入孔を経て伝達されたダイヤフラム室の圧力 により前記弁座を主弁により開閉するようにした減圧弁において、二次側流路と ダイヤフラム室とを連通する圧力導入孔を複数個設けてなる減圧弁であるので、 圧力変動をできるだけ平坦化できる。 As described above, the present invention has a valve seat formed at the tip of a partition wall standing upright in the flow path, a main valve arranged to face the valve seat, and a diaphragm provided near the partition wall. It consists of an ear chamber, a pressure introducing hole that connects the secondary flow path downstream of the partition wall to the diaphragm chamber, and a stem that is fixed to the main valve and is movable back and forth in the diaphragm chamber. In a pressure reducing valve in which the valve seat is opened and closed by the main valve by the pressure of the diaphragm chamber transmitted from the flow passage through the pressure introduction hole, a plurality of pressure introduction holes that connect the secondary side flow passage and the diaphragm chamber are provided. Since the pressure reducing valve is provided, pressure fluctuation can be made as flat as possible.
【００２９】 また、本考案は、圧力導入孔を２箇所としたので、製作をできるだけ容易にす ることができる。 さらに、本考案は二次側流路の上流側と下流側とそれぞれ１箇所に圧力導入孔 を設けたので、上流側圧力導入孔がダイヤフラム室への圧力充填を受け持ち、下 流側圧力導入孔はダイヤフラム室から二次側流路への圧力流出を受け持って圧力 変動の平坦化を行う。Further, in the present invention, since the pressure introducing holes are provided at two places, the manufacturing can be made as easy as possible. Further, in the present invention, since the pressure introducing holes are provided at the upstream side and the downstream side, respectively, of the secondary side flow passage, the upstream side pressure introducing hole takes charge of pressure filling the diaphragm chamber, and the downstream side pressure introducing hole. Takes charge of the pressure outflow from the diaphragm chamber to the secondary side flow path and flattens the pressure fluctuation.
【００３０】 さらにその上に、本考案の上流側圧力導入孔は、二次側流路とダイヤフラム室 とを区画する壁体に、壁体の厚さ方向に対して４５°上流側へ傾斜させて、空気 の通過距離をかせぐと共に、空気の二次側流路を通過する方向と逆方向に向けて 圧力変動の平坦化ができる。 また、上流側圧力導入孔の４５°方向の穿設は機械加工もしやすい。Furthermore, the upstream pressure introducing hole of the present invention is provided in the wall body that divides the secondary flow path and the diaphragm chamber by inclining it to the upstream side by 45 ° with respect to the thickness direction of the wall body. As a result, the air passage distance can be increased and the pressure fluctuation can be flattened in the direction opposite to the direction in which the air passes through the secondary flow path. Further, the drilling of the upstream pressure introducing hole in the 45 ° direction is easy to machine.
【図１】本考案の減圧弁の具体的一実施例の縦断面図で
ある。FIG. 1 is a vertical sectional view of a specific embodiment of a pressure reducing valve of the present invention.
【図２】本考案と従来の減圧弁との流量特性を比較した
グラフである。FIG. 2 is a graph comparing the flow rate characteristics of the present invention and a conventional pressure reducing valve.
【図３】従来の減圧弁の縦断面図である。FIG. 3 is a vertical cross-sectional view of a conventional pressure reducing valve.
【図４】従来の減圧弁の圧力流量特性図を示すグラフで
ある。FIG. 4 is a graph showing a pressure / flow rate characteristic diagram of a conventional pressure reducing valve.
１…隔壁 ２…弁座 ３…主弁 ４…ダイヤフラム ５…ダイヤフラム室 ６…二次側流路 ７…下流側圧力導入孔 ８…リリーフ孔 ９…ステム １１…本体 １２…一次側流路 １３…段部 １４…Ｅリング １５…バネ受け １６…主弁バネ １７…ボンネット １８…下壁 １９…上壁 ２０…ダイヤフラム受け ２１…リリーフ弁シート ２２…調整バネ ２３…支持板 ２４…ハンドル ２５…調整ネジ ２６…固定用ナット ２７…ブリード ２８…ボルト ３１…上流側圧力導入孔 DESCRIPTION OF SYMBOLS 1 ... Partition wall 2 ... Valve seat 3 ... Main valve 4 ... Diaphragm 5 ... Diaphragm chamber 6 ... Secondary side flow passage 7 ... Downstream pressure introduction hole 8 ... Relief hole 9 ... Stem 11 ... Main body 12 ... Primary side flow passage 13 ... Step portion 14 ... E ring 15 ... Spring receiver 16 ... Main valve spring 17 ... Bonnet 18 ... Lower wall 19 ... Upper wall 20 ... Diaphragm receiver 21 ... Relief valve seat 22 ... Adjusting spring 23 ... Support plate 24 ... Handle 25 ... Adjusting screw 26 ... Fixing nut 27 ... Bleed 28 ... Bolt 31 ... Upstream pressure introducing hole
Claims (4)
た弁座と、弁座に対向して配置した主弁と、隔壁の近傍
に設けたダイヤフラムを張設したダイヤフラム室と、隔
壁より下流側の二次側流路とダイヤフラム室とを連通す
る圧力導入孔と、前記主弁に固着されダイヤフラム室に
進退自在に設けられたステムとよりなり、二次側流路よ
り圧力導入孔を経て伝達されたダイヤフラム室の圧力に
より前記弁座を主弁により開閉するようにした減圧弁に
おいて、二次側流路とダイヤフラム室とを連通する圧力
導入孔を複数個設けてなる減圧弁。1. A valve seat formed at the tip of a partition wall standing upright in a flow path, a main valve arranged so as to face the valve seat, a diaphragm chamber provided with a diaphragm provided near the partition wall, and a partition wall. A pressure introducing hole that connects the secondary side flow passage on the more downstream side and the diaphragm chamber, and a stem that is fixed to the main valve and is capable of advancing and retracting in the diaphragm chamber. A pressure reducing valve in which the valve seat is opened and closed by a main valve by the pressure of the diaphragm chamber transmitted through the pressure reducing valve having a plurality of pressure introducing holes for communicating the secondary side flow passage and the diaphragm chamber.
の減圧弁。2. The pressure reducing valve according to claim 1, wherein there are two pressure introducing holes.
１箇所の圧力導入孔を設けた請求項１記載の減圧弁。3. The pressure reducing valve according to claim 1, wherein one pressure introduction hole is provided on each of the upstream side and the downstream side of the secondary side flow passage.
ヤフラム室とを区画する壁体に壁体の厚さ方向に対して
４５°上流側へ傾斜した請求項３記載の減圧弁。4. The pressure reducing valve according to claim 3, wherein the upstream pressure introducing hole is inclined by 45 ° upstream with respect to the thickness direction of the wall body in the wall body that divides the secondary side flow passage and the diaphragm chamber. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997000611U JP3040627U (en) | 1997-02-13 | 1997-02-13 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1997000611U JP3040627U (en) | 1997-02-13 | 1997-02-13 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP3040627U true JP3040627U (en) | 1997-08-26 |
Family
ID=43175190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1997000611U Expired - Lifetime JP3040627U (en) | 1997-02-13 | 1997-02-13 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3040627U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013522528A (en) * | 2010-03-18 | 2013-06-13 | ヒプテック ゲーエムベーハー | FUEL SUPPLEMENT SYSTEM HAVING PRESSURE CONTROL UNIT FOR SUPPLYING FUEL AND CONTROL UNIT HAVING THE PRESSURE CONTROL |
| WO2016135823A1 (en) * | 2015-02-23 | 2016-09-01 | 株式会社コガネイ | Fluid control valve |
-
1997
- 1997-02-13 JP JP1997000611U patent/JP3040627U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013522528A (en) * | 2010-03-18 | 2013-06-13 | ヒプテック ゲーエムベーハー | FUEL SUPPLEMENT SYSTEM HAVING PRESSURE CONTROL UNIT FOR SUPPLYING FUEL AND CONTROL UNIT HAVING THE PRESSURE CONTROL |
| US9880568B2 (en) | 2010-03-18 | 2018-01-30 | Hyptec Gmbh | Pressure regulators for feeding fuel, and fuel-supplying system comprising a regulating unit that consists of said pressure regulators |
| WO2016135823A1 (en) * | 2015-02-23 | 2016-09-01 | 株式会社コガネイ | Fluid control valve |
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