JP2002207519A - Pressure reducing valve - Google Patents
Pressure reducing valveInfo
- Publication number
- JP2002207519A JP2002207519A JP2001002375A JP2001002375A JP2002207519A JP 2002207519 A JP2002207519 A JP 2002207519A JP 2001002375 A JP2001002375 A JP 2001002375A JP 2001002375 A JP2001002375 A JP 2001002375A JP 2002207519 A JP2002207519 A JP 2002207519A
- Authority
- JP
- Japan
- Prior art keywords
- valve
- pressure
- main
- spring
- pressure chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Fluid Pressure (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、二次側圧力室の微
少な圧力変動に対しても圧力制御可能な減圧弁に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure reducing valve capable of controlling a pressure even in a small pressure fluctuation in a secondary pressure chamber.
【０００２】[0002]
【従来の技術】従来、二次側圧力を制御する減圧弁は、
二次側圧力室の圧力変動に応じて弁体の開度を制御する
弁機構部に設けたダイヤフラムと、一次側圧力室と二次
側圧力室とが連通する弁口を開閉する弁体とを、弁棒を
介して連結すると共に、弁バネにて弁体を閉弁方向に付
勢し、ダイヤフラムとバネのバランスによって弁体を開
閉制御している。2. Description of the Related Art Conventionally, a pressure reducing valve for controlling a secondary pressure is
A diaphragm provided in a valve mechanism for controlling the degree of opening of the valve body in accordance with the pressure fluctuations in the secondary pressure chamber, and a valve body for opening and closing a valve opening communicating with the primary pressure chamber and the secondary pressure chamber. Are connected via a valve rod, the valve body is urged in a valve closing direction by a valve spring, and the opening and closing of the valve body are controlled by the balance between the diaphragm and the spring.
【０００３】[0003]
【発明が解決しようとする課題】この様に、減圧弁は、
ダイヤフラムとバネのバランスによって弁体による開度
が調整され、二次側圧力を一次圧力より低いある一定圧
力に保持する様に制御しているが、二次側圧力室の微少
な圧力変動に対しては、ダイヤフラムと弁バネとのバラ
ンスが保持し難く、弁体の開度が不安定で、開閉弁が繰
り返されて圧力制御が行われることと成り、二次側圧力
の制御不良や、振動及び騒音等の不具合を生ずる課題を
有していた。As described above, the pressure reducing valve is
The opening of the valve body is adjusted by the balance between the diaphragm and the spring, and the secondary pressure is controlled to be maintained at a certain pressure lower than the primary pressure. As a result, it is difficult to maintain the balance between the diaphragm and the valve spring, the opening of the valve body is unstable, and the open / close valve is repeated to perform pressure control. And problems such as noise and the like.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記課題に鑑
み、減圧弁において、弁機構部に連繋した弁棒をその軸
方向に所定の遊びを以て主弁に遊貫すると共に、弁棒の
主弁貫通端には、主弁において弁棒の周囲にして且つ主
弁を閉弁方向に付勢する弁バネの内側に貫設した第二の
弁口を開閉する第二の弁体を設け、該弁体は前記遊びを
リフトとすると共に、第二の弁バネにて閉弁方向に付勢
することにより、二次側圧力室の圧力変動が微少であっ
て第二の弁体のリフトの範囲内で弁棒が上下動する場合
に第二の弁体のみを開閉させて二次側圧力室の微少な圧
力変動に対しても確実で安定した圧力制御を可能とし
て、上記課題を解決する。SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a pressure reducing valve, in which a valve stem connected to a valve mechanism is allowed to pass through a main valve with a predetermined play in an axial direction thereof, and the valve stem is provided with a predetermined play. A second valve body that opens and closes a second valve port that is provided around the valve stem of the main valve and inside a valve spring that biases the main valve in the valve closing direction is provided at the main valve penetrating end. The valve body is lifted by the play and is urged in the valve closing direction by a second valve spring, so that the pressure fluctuation in the secondary pressure chamber is very small and the valve body is lifted. When the valve stem moves up and down within the range, only the second valve body is opened and closed to enable reliable and stable pressure control even for minute pressure fluctuations in the secondary side pressure chamber, thereby solving the above problems. I do.
【０００５】[0005]
【発明の実施の形態】以下本発明の一実施例を図面に基
づいて説明する。図１は本発明に係る弁構造から成るシ
ート部１を内蔵した減圧弁２の断面図を示し、図２〜４
はシート部１の各動作の拡大図を示す。シート部１は、
図２に示す様に、一次側圧力室３と二次側圧力室４とが
連通する弁口５と、弁口５を開閉する主弁６と、主弁６
に設けた第二の弁口７と、第二弁口７を開閉する第二の
弁体８とから主に構成されている。DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view of a pressure reducing valve 2 having a built-in seat portion 1 having a valve structure according to the present invention.
3 shows an enlarged view of each operation of the seat unit 1. FIG. The seat 1 is
As shown in FIG. 2, a valve port 5 through which the primary pressure chamber 3 communicates with the secondary pressure chamber 4, a main valve 6 for opening and closing the valve port 5, and a main valve 6
And a second valve body 8 that opens and closes the second valve port 7.
【０００６】弁口５において一次側圧力室３側の円形状
の開口部周縁を主弁６が着座する弁座９と成している。
又、弁口５の二次側圧力室４側には、弁機構部10より延
設した弁棒11を、弁口５の中心で摺動自在に挿通支持す
る弁棒ガイド12を設けている。主弁６は略円板状に形成
され、その上面中央には、所定の内径を有する円環状の
膨出部13を設け、該膨出部13はその中心に弁棒11先端の
挿通部14を設けると共に、該挿通部14の周囲に一次側圧
力室３と二次側圧力室４とが連通する第二の弁口７を貫
設している。又、膨出部13には、主弁６を閉弁方向に付
勢する弁バネ15の一端を外嵌して膨出部13周囲の主弁６
上面をバネ受け16と成している。The periphery of the circular opening on the primary pressure chamber 3 side of the valve port 5 forms a valve seat 9 on which the main valve 6 is seated.
A valve rod guide 12 is provided on the secondary pressure chamber 4 side of the valve port 5 to slidably insert and support a valve rod 11 extending from the valve mechanism 10 at the center of the valve port 5. . The main valve 6 is formed in a substantially disk shape, and an annular bulging portion 13 having a predetermined inner diameter is provided at the center of the upper surface, and the bulging portion 13 has an insertion portion 14 at the center of the valve rod 11 at the center thereof. And a second valve port 7 through which the primary pressure chamber 3 and the secondary pressure chamber 4 communicate with each other is provided around the insertion portion 14. Further, one end of a valve spring 15 for urging the main valve 6 in the valve closing direction is fitted on the bulging portion 13 so that the main valve 6 around the bulging portion 13 is fitted.
The upper surface is formed as a spring receiver 16.
【０００７】主弁６に設けた挿通部14には、主弁６の下
面（二次側圧力室４側）より弁棒11先端がその軸方向に
所定の遊びＸを以て遊貫（主弁６に対し摺動自在に貫
通）している。そして、膨出部13の中心（挿通部14）を
貫通突出した弁棒11の主弁貫通端11ａに第二の弁体８を
設けており、この第二弁体８は、膨出部13の外径より若
干小径な円板状に形成され、弁座17と成した膨出部13の
上端内周縁に着離自在と成している。弁棒11先端におい
て、挿通部14へ挿入される摺動部11ｂを突出させた際か
ら下方部位は、所定長さに渡り挿通部14と同径に形成し
て摺動部11ｂ基端との段差を有する段部11ｃと成してお
り、摺動部11ｂは挿通部14と略同径にして且つ第二弁体
８下面から主弁６下面までの長さＬよりも若干長く形成
され、この長さＬと摺動部11ｂの長さＳとの差が上記の
遊びＸであり、この遊びＸが第二弁体８のリフト（移動
量）に相当する。又、第二弁体８は、後述する第二の弁
バネ18により閉弁方向へ付勢されている。In the insertion portion 14 provided in the main valve 6, the tip end of the valve rod 11 from the lower surface of the main valve 6 (the side of the secondary pressure chamber 4) has a predetermined play X in the axial direction so as to allow free passage (the main valve 6). Slidably penetrates). The second valve element 8 is provided at the main valve penetrating end 11a of the valve rod 11 which protrudes through the center of the bulging part 13 (the insertion part 14). Is formed in a disk shape having a diameter slightly smaller than the outer diameter of the bulging portion 13 formed with the valve seat 17 so as to be freely attached to and detached from the inner peripheral edge of the upper end. At the distal end of the valve stem 11, when the sliding portion 11b to be inserted into the insertion portion 14 is protruded, a lower portion is formed to have the same diameter as the insertion portion 14 over a predetermined length and is formed with the base end of the sliding portion 11b. The sliding portion 11b has substantially the same diameter as the insertion portion 14 and is formed slightly longer than the length L from the lower surface of the second valve body 8 to the lower surface of the main valve 6, The difference between the length L and the length S of the sliding portion 11b is the play X, and the play X corresponds to the lift (movement amount) of the second valve element 8. Further, the second valve body 8 is urged in a valve closing direction by a second valve spring 18 described later.
【０００８】減圧弁２は、その弁箱19の左右側方に入口
20及び出口21を開口形成し、入口20及び出口21は、弁箱
19の内部を隔壁22で上下に区画された一次側圧力室３及
び二次側圧力室４の夫々に通じており、隔壁22にシート
部１における弁口５が設けられている。弁箱19の下部に
は、弁機構部10を設けたケーシング23を設け、該ケーシ
ング23には、その内部空間を上下に区画したメインダイ
ヤフラム24を設けている。ケーシング23の上部中心に
は、メインダイヤフラム24の上面にダイヤフラム押さえ
25を介して基端を接合した弁棒11を摺動自在に挿通し、
メインダイヤフラム24と主弁６及び第二弁体８とを連繋
している。ケーシング23内において、メインダイヤフラ
ム24の上方空間は、ケーシング23の上部に貫設した連通
孔26で二次側圧力室４に連通しており、又ダイヤフラム
押さえ25とケーシング23の天井部間には第二弁バネ18を
圧縮介装している。[0008] The pressure reducing valve 2 has inlets on the left and right sides of the valve box 19.
The opening 20 and the outlet 21 are formed, and the inlet 20 and the outlet 21
The inside of 19 communicates with each of a primary pressure chamber 3 and a secondary pressure chamber 4 which are vertically divided by a partition 22, and the partition 22 is provided with a valve port 5 in the seat portion 1. A casing 23 provided with the valve mechanism 10 is provided below the valve box 19, and the casing 23 is provided with a main diaphragm 24 which divides an internal space of the casing 23 up and down. In the center of the upper part of the casing 23, the diaphragm is pressed on the upper surface of the main diaphragm 24.
25, slidably insert the valve stem 11 with the base end joined via
The main diaphragm 24 is connected to the main valve 6 and the second valve body 8. In the casing 23, the space above the main diaphragm 24 communicates with the secondary pressure chamber 4 through a communication hole 26 penetrating the upper part of the casing 23, and between the diaphragm holder 25 and the ceiling of the casing 23. The second valve spring 18 is interposed in compression.
【０００９】弁箱19の上部（一次側圧力室３の上部に相
当）は、その中央が開設され、弁箱19上端に設置したパ
イロット弁箱27に連通している。一方、一次側圧力室３
において、パイロット弁箱27との連通口28には、その直
径方向に平板状のバネ受け29を架設し、該バネ受け29と
主弁６上面のバネ受け16と間に弁バネ15を圧縮介装して
いる。The upper part of the valve box 19 (corresponding to the upper part of the primary pressure chamber 3) is opened at the center, and communicates with a pilot valve box 27 installed at the upper end of the valve box 19. On the other hand, the primary pressure chamber 3
In the communication port 28 with the pilot valve box 27, a flat plate-shaped spring receiver 29 is provided in the diameter direction thereof, and the valve spring 15 is compressed between the spring receiver 29 and the spring receiver 16 on the upper surface of the main valve 6. I am wearing it.
【００１０】パイロット弁箱27は、その中央にパイロッ
ト圧力室30を設け、該パイロット圧力室30と一次側圧力
室３とをパイロット弁バネ31にて閉弁方向に付勢したパ
イロット弁32で以て両室３、30を開通又は閉鎖する様に
設けている。パイロット圧力室30は、メインダイヤフラ
ム24の下方空間であるメインダイヤフラム室33に導管34
を介して連通し、該導管34の分岐導管34ａを二次側圧力
室４に設けたオリフィス35に連結し、パイロット圧力室
30を二次側圧力室４に連通している。パイロット弁32の
弁棒32ａは、パイロット圧力室30の上部に区画形成した
空間36に摺動自在に突出しており、かかる空間36は、パ
イロットダイヤフラム37を介してパイロット弁箱27上に
被冠したバネカバー38の内部空間と区画され、パイロッ
トダイヤフラム室36と成している。バネカバー38の内部
空間には、バネカバー38の上部より突入した調節ねじ39
で弾性力を調整自在と成した圧力設定バネ40をパイロッ
トダイヤフラム37上面に付勢し、該パイロットダイヤフ
ラム37を介して弁棒32ａの突出端部（上端部）が圧力設
定バネ40の弾性力を受承する様に成している。又、パイ
ロットダイヤフラム室36は、出口21に連結した検出管41
を介して二次側圧力室４と連通し、二次側圧力によりパ
イロットダイヤフラム37が変位する様に成している。
尚、本実施例の減圧弁２は蒸気用のものを示したが、こ
れに限定されることなく、減圧弁２は、二次側の流体圧
力を、一次側の流体圧力より低いある一定の圧力に保持
する減圧機能を有するものであれば良い。The pilot valve box 27 is provided with a pilot pressure chamber 30 at the center thereof, and a pilot valve 32 which urges the pilot pressure chamber 30 and the primary pressure chamber 3 in a valve closing direction by a pilot valve spring 31. The two chambers 3 and 30 are provided so as to be opened or closed. The pilot pressure chamber 30 is connected to the main diaphragm chamber 33, which is a space below the main diaphragm 24, by a conduit 34.
And a branch conduit 34a of the conduit 34 is connected to an orifice 35 provided in the secondary pressure chamber 4,
30 communicates with the secondary pressure chamber 4. The valve stem 32a of the pilot valve 32 protrudes slidably into a space 36 defined above the pilot pressure chamber 30, and the space 36 covers the pilot valve box 27 via a pilot diaphragm 37. It is partitioned from the internal space of the spring cover 38 and forms a pilot diaphragm chamber 36. An adjusting screw 39 protruding from above the spring cover 38 is provided in the internal space of the spring cover 38.
The pressure setting spring 40, whose elastic force can be adjusted by pressing, is urged to the upper surface of the pilot diaphragm 37, and the protruding end (upper end) of the valve rod 32a via the pilot diaphragm 37 reduces the elastic force of the pressure setting spring 40. It is made to accept. Further, the pilot diaphragm chamber 36 is provided with a detection pipe 41 connected to the outlet 21.
The pilot diaphragm 37 is displaced by the secondary pressure by being communicated with the secondary pressure chamber 4 through the pressure sensor.
Although the pressure reducing valve 2 of the present embodiment is for steam, the pressure reducing valve 2 is not limited to this, and the pressure reducing valve 2 may be configured to reduce the fluid pressure on the secondary side to a certain pressure lower than the fluid pressure on the primary side. What is necessary is just to have a decompression function to hold pressure.
【００１１】次に、減圧弁２の動作について説明する。
通常は、圧力設定バネ40は無負荷状態で、主弁６、第二
弁体８及びパイロット弁32の夫々は、弁バネ15、第二弁
バネ18及びパイロット弁バネ31により閉止している。高
圧流体が一次側圧力室３へ流入すると、主弁６及び第二
弁体８の上面とパイロット弁32の背部32ｂに一次側圧力
が加わる。かかる状態において、調節ねじ39により圧力
設定バネ40を圧縮し、その弾性力で以てパイロットダイ
ヤフラム37を介して弁棒32ａを押圧し、パイロット弁32
を開弁させる。これにより、一次側圧力室３の圧力流体
は、パイロット圧力室30から導管34を経てメインダイヤ
フラム室33に流入すると共に、分岐導管34ａ、オリフィ
ス35を経て二次側圧力室４へ流入する。そして、パイロ
ット圧力室30を通る流量がオリフィス35を通る流量より
多くなると、メインダイヤフラム室33の操作圧が上昇
し、主弁６及び第二弁体８上面の一次側圧力と弁バネ15
及び第二弁バネ18の弾性力に打ち勝って主弁６及び第二
弁体８を押し開き、一次側圧力室３から二次側圧力室４
へ圧力流体が流れ始める。又、二次側圧力室４へ流入し
た圧力流体は、検出管41よりパイロットダイヤフラム室
36へ導かれる。Next, the operation of the pressure reducing valve 2 will be described.
Normally, the pressure setting spring 40 is in a no-load state, and the main valve 6, the second valve body 8 and the pilot valve 32 are closed by the valve spring 15, the second valve spring 18 and the pilot valve spring 31, respectively. When the high-pressure fluid flows into the primary pressure chamber 3, the primary pressure is applied to the upper surfaces of the main valve 6 and the second valve body 8 and the back 32 b of the pilot valve 32. In this state, the pressure setting spring 40 is compressed by the adjusting screw 39, and the valve rod 32a is pressed by the elastic force through the pilot diaphragm 37 so that the pilot valve 32
Is opened. Thus, the pressure fluid in the primary pressure chamber 3 flows from the pilot pressure chamber 30 via the conduit 34 into the main diaphragm chamber 33, and also flows into the secondary pressure chamber 4 via the branch conduit 34a and the orifice 35. When the flow rate through the pilot pressure chamber 30 becomes larger than the flow rate through the orifice 35, the operating pressure of the main diaphragm chamber 33 increases, and the primary pressure of the upper surface of the main valve 6 and the second valve body 8 and the valve spring 15
The main valve 6 and the second valve body 8 are pushed open by overcoming the elastic force of the second valve spring 18 and the primary pressure chamber 3 is moved to the secondary pressure chamber 4.
Pressure fluid starts to flow. The pressure fluid flowing into the secondary side pressure chamber 4 is sent from the detection pipe 41 to the pilot diaphragm chamber.
Guided to 36.
【００１２】パイロットダイヤフラム37は二次側圧力を
受け、圧力設定バネ40と釣り合い、二次側圧力の増減に
よりパイロットダイヤフラム37に作用する圧力と、圧力
設定バネ40が働き合ってパイロット弁32による開度を加
減し、メインダイヤフラム室33への流入量を変化させて
主弁６及び第二弁体８による開度を制御し、二次側圧力
室４を適正な圧力にする。ここに、二次側圧力の増減が
微少でメインダイヤフラム室33への流入量の変化が微少
である場合、即ち、第二弁体８のリフトＸの範囲内でメ
インダイヤフラム24が変位する場合には、メインダイヤ
フラム24の変位で上下する弁棒11は、その段部11ｃが主
弁６（挿通部14の段部11ｃに対向する端面）を押圧せ
ず、挿通部14内を弁棒11の摺動部11ｂが上下摺動するた
め、第二弁体８のみが開閉（図３参照）し、二次側圧力
室４を適正な圧力にする。そして、上記範囲内よりも二
次側圧力が増大した場合には、弁棒11の段部11ｃが主弁
６を押圧し、第二弁体８と共に主弁６を開弁させる（図
４参照）。その後、二次側への負荷が無くなると、パイ
ロットダイヤフラム室36の圧力が上昇し、パイロット弁
32が閉弁し、メインダイヤフラム室33の操作圧がオリフ
ィス35を通って二次側圧力室４へ逃げ、メインダイヤフ
ラム37が復位するため、主弁６及び第二弁体８の夫々は
弁バネ15及び第二弁バネ18に付勢されて閉止する。The pilot diaphragm 37 receives the secondary pressure and balances with the pressure setting spring 40. The pressure acting on the pilot diaphragm 37 due to the increase and decrease of the secondary pressure and the pressure setting spring 40 work to open the pilot valve 32. The opening degree by the main valve 6 and the second valve body 8 is controlled by changing the flow rate into the main diaphragm chamber 33, and the secondary pressure chamber 4 is adjusted to an appropriate pressure. Here, when the increase / decrease in the secondary pressure is small and the change in the inflow amount into the main diaphragm chamber 33 is small, that is, when the main diaphragm 24 is displaced within the range of the lift X of the second valve body 8 The step 11c of the valve stem 11 which moves up and down by the displacement of the main diaphragm 24 does not press the main valve 6 (the end face facing the step 11c of the insertion section 14), and the inside of the insertion section 14 Since the sliding portion 11b slides up and down, only the second valve body 8 opens and closes (see FIG. 3), and the secondary pressure chamber 4 is set to an appropriate pressure. When the secondary pressure is higher than the above range, the step 11c of the valve rod 11 presses the main valve 6 to open the main valve 6 together with the second valve body 8 (see FIG. 4). ). Thereafter, when the load on the secondary side disappears, the pressure in the pilot diaphragm chamber 36 increases, and the pilot valve
32 closes, the operating pressure of the main diaphragm chamber 33 escapes to the secondary pressure chamber 4 through the orifice 35, and the main diaphragm 37 returns, so that the main valve 6 and the second valve body 8 are each a valve spring. It is urged by 15 and the second valve spring 18 to close.
【００１３】[0013]
【発明の効果】要するに本発明は、主弁６において、軸
方向に所定の遊びＸを以て遊貫した弁棒11の周囲にし
て、且つ主弁６を閉弁方向に付勢する弁バネ15の内側に
貫設した第二の弁口７を開閉する第二の弁体８を、弁棒
11の主弁貫通端11ａに設けると共に、第二の弁バネ18に
て閉弁方向に付勢したので、二次側圧力室４の圧力変動
が微少であって第二弁体８のリフト（遊び）Ｘの範囲内
で弁機構部10のメインダイヤフラム24が変位する場合に
は、第二弁体８のみが開閉し、従来不安定であった弁体
の作動領域においても、二次側圧力室４を適正な圧力に
制御でき、従来弁体の作動不安定により生じていた二次
側圧力の制御不良や、振動及び騒音等の不具合を解消で
きると共に、第二弁体８のリフトＸの範囲内よりも二次
側圧力の変動が大きい場合には、通常の減圧弁と同様に
主弁６が開閉して対応するため、減圧弁２の能力向上を
図ることができる等その実用的効果甚だ大である。In summary, the present invention relates to a valve spring 15 for urging the main valve 6 in the direction of closing the valve stem 11 around the stem 11 which has passed through the play with a predetermined play X in the axial direction. A second valve body 8 that opens and closes a second valve port 7 penetrating inside is provided with a valve stem
11 and is urged in the valve closing direction by the second valve spring 18, the pressure fluctuation in the secondary pressure chamber 4 is very small and the lift of the second valve body 8 is increased. Play) When the main diaphragm 24 of the valve mechanism 10 is displaced within the range of X, only the second valve body 8 opens and closes, and even in the operation region of the conventionally unstable valve body, the secondary side pressure is reduced. The pressure in the chamber 4 can be controlled to an appropriate value, and the control failure of the secondary pressure and the problems such as vibration and noise caused by the unstable operation of the valve body can be eliminated. When the fluctuation of the secondary pressure is larger than the range, the main valve 6 opens and closes in the same manner as a normal pressure reducing valve, so that the performance of the pressure reducing valve 2 can be improved. It is enormous.
【図１】減圧弁の断面図である。FIG. 1 is a sectional view of a pressure reducing valve.
【図２】閉弁状態のシート部の拡大断面図である。FIG. 2 is an enlarged sectional view of a seat portion in a valve closed state.
【図３】第二の弁体の開弁状態を示す拡大断面図であ
る。FIG. 3 is an enlarged sectional view showing a valve-open state of a second valve body.
【図４】主弁の開弁状態を示す拡大断面図である。FIG. 4 is an enlarged cross-sectional view showing an open state of a main valve.
【図５】減圧弁の右側面図である。FIG. 5 is a right side view of the pressure reducing valve.
【図６】パイロット弁の拡大断面図である。FIG. 6 is an enlarged sectional view of a pilot valve.
【符号の説明】 ６ 主弁 ７ 第二の弁口 ８ 第二の弁体 10 弁機構部 11 弁棒 11ａ 主弁貫通端 15 弁バネ 18 第二の弁バネ Ｘ 遊び[Description of Signs] 6 Main valve 7 Second valve port 8 Second valve body 10 Valve mechanism 11 Valve rod 11a Main valve penetration end 15 Valve spring 18 Second valve spring X Play
───────────────────────────────────────────────────── フロントページの続き (72)発明者 長坂 隆史 愛知県小牧市大字入鹿出新田字宮前955ー ５ 株式会社ヨシタケ小牧工場内 Ｆターム(参考） 5H316 DD02 DD06 DD07 EE02 EE10 EE12 GG01 HH04 HH15 HH16 JJ01 JJ11 KK02 KK08 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Takashi Nagasaka 955--5, Miyamae, Irikade-Nitta-shi, Komaki-shi, Aichi Prefecture F-term in the Yoshitake Komaki Plant F-term (reference) JJ01 JJ11 KK02 KK08
Claims (1)
向に所定の遊びを以て主弁に遊貫すると共に、弁棒の主
弁貫通端には、主弁において弁棒の周囲にして且つ主弁
を閉弁方向に付勢する弁バネの内側に貫設した第二の弁
口を開閉する第二の弁体を設け、該弁体は第二の弁バネ
にて閉弁方向に付勢したことを特徴とする減圧弁。1. A valve stem extending from a valve mechanism part penetrates a main valve with a predetermined play in an axial direction thereof, and a main valve penetrating end of the valve stem extends around the valve stem in the main valve. And a second valve body that opens and closes a second valve port provided through a valve spring that urges the main valve in the valve closing direction, and the valve body is closed by the second valve spring in the valve closing direction. A pressure reducing valve characterized by being biased to:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001002375A JP2002207519A (en) | 2001-01-10 | 2001-01-10 | Pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001002375A JP2002207519A (en) | 2001-01-10 | 2001-01-10 | Pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002207519A true JP2002207519A (en) | 2002-07-26 |
Family
ID=18870894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001002375A Pending JP2002207519A (en) | 2001-01-10 | 2001-01-10 | Pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002207519A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695996A (en) * | 2009-12-22 | 2012-09-26 | 斯皮拉克斯马沙尔有限公司 | Pressure reducing valves with multiple heads and seats |
-
2001
- 2001-01-10 JP JP2001002375A patent/JP2002207519A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102695996A (en) * | 2009-12-22 | 2012-09-26 | 斯皮拉克斯马沙尔有限公司 | Pressure reducing valves with multiple heads and seats |
| JP2013515314A (en) * | 2009-12-22 | 2013-05-02 | スパイラックス マーシャル ピーブイティー． リミテッド | Pressure reducing valve with multiple heads and seat |
| DE112010004952B4 (en) * | 2009-12-22 | 2017-07-06 | Forbes Marshall Steam Systems Private Ltd. | Pressure reducing valves with multiple heads and seats |
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