JPS6336219Y2 - - Google Patents
Info
- Publication number
- JPS6336219Y2 JPS6336219Y2 JP18658680U JP18658680U JPS6336219Y2 JP S6336219 Y2 JPS6336219 Y2 JP S6336219Y2 JP 18658680 U JP18658680 U JP 18658680U JP 18658680 U JP18658680 U JP 18658680U JP S6336219 Y2 JPS6336219 Y2 JP S6336219Y2
- Authority
- JP
- Japan
- Prior art keywords
- suction
- valve body
- valve
- suction plate
- ring
- 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.)
- Expired
Links
- 238000001514 detection method Methods 0.000 claims description 12
- 238000002955 isolation Methods 0.000 claims description 5
- 239000012530 fluid Substances 0.000 description 7
- 238000001179 sorption measurement Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 3
- 238000000418 atomic force spectrum Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000004907 gland Anatomy 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 239000006148 magnetic separator Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
この考案は高温高圧用電磁弁に関するもので、
特に無漏洩型の高温高圧用電磁弁に関するもので
ある。原子力発電所の高温高圧蒸気系統あるいは
給水系統に使用する弁は、放射性流体を制御する
という特異な性格上、可能な限り弁からの外部へ
の漏洩を防止する必要がある。このような要求か
らすると、一般に使用されているような駆動源か
ら弁棒を介して弁体を開閉させる弁装置は弁棒ま
わりの漏洩の可能性があるので好ましくない。即
ち、弁箱体から弁棒を外部に貫通させ、その貫通
部の密封にグランドパツキングを充填した形式の
ものは、グランドパツキング部より微少洩れが必
ずあり、この洩れが外部環境を汚染する。[Detailed explanation of the invention] This invention relates to a solenoid valve for high temperature and high pressure.
In particular, it relates to a leak-free high-temperature, high-pressure solenoid valve. Valves used in high-temperature, high-pressure steam systems or water supply systems in nuclear power plants have the unique property of controlling radioactive fluids, so it is necessary to prevent leakage from the valves to the outside as much as possible. In view of these requirements, a generally used valve device in which a valve body is opened and closed from a driving source via a valve stem is not preferable because there is a possibility of leakage around the valve stem. In other words, when the valve stem is passed through the valve body to the outside and the penetration part is sealed with gland packing, there is always a small amount of leakage from the gland packing part, and this leakage contaminates the external environment. .
この考案は上記のような原子力発電所の放射性
流体を制御することを主用途とする弁であつて、
弁棒等が外部へ貫通していない無漏洩電磁弁を提
供することを目的とし、電磁弁は高圧流体用であ
るため通常の低圧流体に使用する電磁弁と異な
り、電磁石駆動部が弁箱体に直結されて、２連作
動方式になつていることを特徴としている。 This invention is a valve whose main purpose is to control radioactive fluid in nuclear power plants as mentioned above.
The purpose is to provide a leak-free solenoid valve in which the valve stem etc. do not penetrate to the outside.Since the solenoid valve is for high-pressure fluid, unlike a solenoid valve used for normal low-pressure fluid, the electromagnetic drive part is attached to the valve body. It is characterized by being directly connected to the , making it a dual-operation system.
以下に、図示する実施例に基づいてこの考案を
説明する。第１図に示すように、弁箱体１は入口
側Ａと出口側Ｂとを有し、入口側Ａと出口側Ｂと
の間に主弁座２を有している。閉弁時主弁座２を
塞ぐように弁箱体１内に位置する主弁体３は、中
心部にパイロツト弁体４を摺動自在に収容する内
腔３ａを有し、この内腔３ａの先端（図で下端）
にあたる部分すなわち主弁体３の下端中心部分に
パイロツト弁座５を設けていると共に、主弁体３
の上部とパイロツト弁座５の上部とを連通する穴
３ｂを主弁体３に設けている。弁棒６は、前記主
弁体３及びパイロツト弁体４を引上げてそれぞれ
開閉作動させる目的で、主弁体３の中心を貫通す
ると共に、ピン７によつてパイロツト弁体４に取
付けられている。 This invention will be explained below based on the illustrated embodiments. As shown in FIG. 1, the valve body 1 has an inlet side A and an outlet side B, and has a main valve seat 2 between the inlet side A and the outlet side B. As shown in FIG. The main valve body 3, which is located in the valve body 1 so as to close the main valve seat 2 when the valve is closed, has a lumen 3a in the center that slidably accommodates a pilot valve body 4. tip (lower edge in the diagram)
A pilot valve seat 5 is provided at the center of the lower end of the main valve body 3.
The main valve body 3 is provided with a hole 3b which communicates the upper part of the pilot valve seat 5 with the upper part of the pilot valve seat 5. The valve stem 6 passes through the center of the main valve body 3 and is attached to the pilot valve body 4 by a pin 7 for the purpose of pulling up the main valve body 3 and the pilot valve body 4 to open and close them respectively. .
このように構成された主弁体３は、主弁体３の
外径側に摺動自在に嵌装されて弁箱体１に設けら
れた案内スリーブ８に沿つて上下開閉運動を行な
う。尚主弁体３の外径にはピストンリング９が装
着されている。パイロツト弁体４はスプリング１
０により常時パイロツト弁座５を閉鎖する方向に
付勢されている。弁箱体１は、上部にボンネツト
１１を持ち、このボンネツトはボルト１２によつ
て弁箱体１と結合されており、ボンネツト１１は
上部に電磁石装置を具えている。又この電磁石装
置に、下部弁箱体１からの熱影響を極力少なくす
るため、ボンネツト１１は首の部分ｄを長くして
熱を拡散している。 The main valve body 3 configured in this manner is slidably fitted on the outer diameter side of the main valve body 3 and performs vertical opening and closing movements along the guide sleeve 8 provided on the valve body 1. A piston ring 9 is attached to the outer diameter of the main valve body 3. Pilot valve body 4 is spring 1
0, the pilot valve seat 5 is always biased in the direction of closing. The valve body 1 has a bonnet 11 in its upper part, which is connected to the valve body 1 by bolts 12, and the bonnet 11 is provided with an electromagnetic device in its upper part. In order to minimize the influence of heat from the lower valve body 1 on this electromagnet device, the bonnet 11 has a long neck portion d to diffuse heat.
主弁体３を引上げる役目の弁棒６は上部に吸着
板１３を有しており、吸着板１３の外周には隔離
筒１６をその内面に取付けている吸着リング１４
が設けられている。吸着リング１４はその内径側
下端に棚部ａを有しており、棚部ａと吸着板１３
との間には非磁性体の隔離板１５が吸着リング１
４に取付けられている。同様に吸着リング１４の
内径側と吸着板１３の外径側との間には非磁性体
の隔離筒１６が吸着リング１４に取付けられてい
る。吸着板１３及び吸着リング１４の上部には吸
着面ｂ及び吸着面ｃを有する電磁石１７が取付け
られている。この電磁石１７は電気絶縁材料に耐
熱材を使用して高温流体の熱影響による劣化を防
止している。電磁石１７の中心部は貫通した空胴
になつており、その空胴には下部先端が吸着板１
３に取付けられた非磁性体の指示棒１８が挿入さ
れている。 The valve rod 6, which serves to pull up the main valve body 3, has a suction plate 13 on the upper part, and a suction ring 14 on the outer periphery of the suction plate 13 has an isolation tube 16 attached to its inner surface.
is provided. The suction ring 14 has a shelf part a at its lower end on the inner diameter side, and the shelf part a and the suction plate 13
A non-magnetic separator 15 is provided between the adsorption ring 1 and
It is attached to 4. Similarly, a non-magnetic isolation tube 16 is attached to the suction ring 14 between the inner diameter side of the suction ring 14 and the outer diameter side of the suction plate 13. An electromagnet 17 having a suction surface b and a suction surface c is attached to the upper part of the suction plate 13 and the suction ring 14. This electromagnet 17 uses a heat-resistant material as an electrical insulating material to prevent deterioration due to the thermal influence of high-temperature fluid. The center of the electromagnet 17 is a penetrating cavity, and the lower tip of the cavity is a suction plate 1.
A non-magnetic indicator rod 18 attached to 3 is inserted.
指示棒１８の上部先端には磁性体の検出片１９
が取付けてあり、これを検出スリーブ２０の内面
で往復動させている。又検出スリーブ２０の外周
には開閉位置を検出するための近接スイツチ２１
が設けられている。 A magnetic detection piece 19 is attached to the upper tip of the indicator rod 18.
is attached and is reciprocated on the inner surface of the detection sleeve 20. Also, on the outer periphery of the detection sleeve 20, there is a proximity switch 21 for detecting the open/close position.
is provided.
次に弁の作動について説明する。 Next, the operation of the valve will be explained.
一般に第１図に示すようなパイロツト弁付締切
弁の開閉操作に必要な操作力は、ストローク−操
作力線図を示す第２図においてｅ線によつて示す
ような操作力曲線を描く。すなわち、全閉状態か
ら開弁する場合、操作力は、開弁開始の瞬間（第
２図のL1）が最も大きく、開弁直後に急速に操
作力が減衰し、そのまま全開に至る（第２図の
L2）。これは、全閉時に入口側Ａの圧力と出口側
Ｂの圧力差が出口方向に、主弁体３とパイロツト
弁体４に背圧力として加わつており、このパイロ
ツト弁体４を入口側と出口側の圧力差に抗して開
くためには、開く瞬間に上記のような大きな開方
向操作力を必要とする。 Generally, the operating force required to open and close a shutoff valve with a pilot valve as shown in FIG. 1 draws an operating force curve as shown by line e in FIG. 2 which shows a stroke-operating force diagram. In other words, when opening a valve from a fully closed state, the operating force is greatest at the moment when the valve begins to open (L 1 in Figure 2), and immediately after the valve opens, the operating force rapidly attenuates until it reaches full open (at the moment when the valve opens). Figure 2
L2 ). This is because, when fully closed, the pressure difference between the inlet side A and the outlet side B is applied as back pressure to the main valve body 3 and the pilot valve body 4 in the direction of the outlet, and this pilot valve body 4 is connected between the inlet side and the outlet side. In order to open against the pressure difference between the sides, a large operating force in the opening direction as described above is required at the moment of opening.
又、パイロツト弁体４が開いた後は、主弁体３
の上部圧力は、穴３ｂを介してパイロツト弁座５
から抜ける。このとき、入口側Ａから圧力は、ピ
ストンリング９で気密を保つているため、主弁体
３の上部には瞬間的には入口側Ａの圧力は導入さ
れない。 Also, after the pilot valve body 4 opens, the main valve body 3
The upper pressure of the pilot valve seat 5 is applied through the hole 3b.
Get out of. At this time, since the pressure from the inlet side A is kept airtight by the piston ring 9, the pressure from the inlet side A is not instantaneously introduced into the upper part of the main valve body 3.
従つて、主弁体３は上部圧力が出口側Ｂの圧力
とバランスするまで下がり、極めて小さい操作力
で弁開可能となる。 Therefore, the upper pressure of the main valve body 3 decreases until it balances with the pressure on the outlet side B, and the valve can be opened with an extremely small operating force.
尚、上記主弁体３とパイロツト弁体４とに入口
側Ａの圧力が背圧としてかかる理由は次のとおり
である。 The reason why the pressure on the inlet side A is applied as back pressure to the main valve body 3 and the pilot valve body 4 is as follows.
主弁体３及びパイロツト弁体４には、入口側圧
力Ａがピストンリング９の隙間を通つて加わる。
このビストンリング９は、自動車のピストンリン
グと同様のメタルタイプであり、瞬間のシールは
可能であるが、時間の経過と共にリング合わせ
目、あるいは、摺動部隙間から徐々に洩れて、主
弁体３及びパイロツト弁体４の上部にかかり、背
圧となるためである。 Inlet side pressure A is applied to the main valve body 3 and the pilot valve body 4 through the gap between the piston rings 9.
This piston ring 9 is a metal type similar to the piston ring of an automobile, and can provide an instant seal, but over time, it gradually leaks from the ring seam or the gap between the sliding parts, causing the main valve body to leak. 3 and the upper part of the pilot valve body 4, resulting in back pressure.
この考案はこのような特徴のある操作力曲線に
沿つた操作力を提供する電磁石構造にしたため、
高圧電磁弁としては非常にコンパクトな電磁石装
置となつている。全閉から弁を開く場合、まず電
磁石１７に通電すると、吸着面ｂ及びｃに吸引力
が働く。このとき、吸着面ｂ及び吸着リング１４
の上面間の隙間と、吸着面ｃ及び吸着板１３間の
隙間とを比べると、明らかに吸着面ｂの隙間が小
さい。このため、通電すると、当初は吸着面ｂに
吸着リング１４が吸引、吸着され、その後吸着面
ｃに吸着板１３が吸引されるようになる。 This idea uses an electromagnetic structure that provides operating force along this characteristic operating force curve.
As a high-pressure solenoid valve, it is an extremely compact electromagnetic device. When opening the valve from a fully closed state, firstly, when the electromagnet 17 is energized, an attractive force is applied to the attraction surfaces b and c. At this time, the suction surface b and the suction ring 14
Comparing the gap between the upper surfaces of the suction surface c and the gap between the suction surface c and the suction plate 13, it is clear that the gap between the suction surface b and the suction plate 13 is smaller. Therefore, when electricity is applied, the suction ring 14 is initially attracted and attracted to the suction surface b, and then the suction plate 13 is attracted to the suction surface c.
この作用について説明すると、これは磁気吸引
力が距離の２乗に反比例することを応用したもの
で、吸引距離が小さい程強大な吸引力となる。す
なわち、吸着面ｂの吸引隙間は第２図のストロー
クL1部に相当し、非常に小さいので強大な吸引
力（第２図のｆ線）が発生すると共に、隙間の減
小と共に吸引力は増大する。又吸着面ｃ部の吸引
隙間は第２図のストロークL2に相当し、吸引力
は弱い（第２図のｇ線）が大きなストロークを得
ている。ここで、吸着板１３と吸着リング１４の
作動のつながりについて説明すると、電磁石１７
の通電により吸着面ｂが吸着リング１４をストロ
ークL1のみ引上げる。この時吸着リング１４の
棚部ａが吸着板１３を押上げ吸着リング１４と同
じストロークL1だけ作動させる。従つて吸着板
１３はストロークL1分だけパイロツト弁体４を
引上げることになる。パイロツト弁体４がストロ
ークL1だけリフト作動すると、主弁体３の上部
圧力は穴３ｂを通つて、パイロツト弁座５から抜
ける。更にストロークL1だけ押上げられた吸着
板１３は吸着面ｃに向かつてストロークL2分だ
け吸引され、主弁体３をパイロツト弁体４の引上
げにより係合して引上げ、全開に導く。又このよ
うな吸着板１３と吸着リング１４の作動を阻害す
る要因として相互の吸着がある。この吸着板１３
と吸着リング１４との相互の吸着作用を防止する
ために、吸着リング１４の内側に隔離筒１６及び
棚部ａの上面に隔離板１５が設けられている。 To explain this effect, it is based on the fact that the magnetic attraction force is inversely proportional to the square of the distance, and the smaller the attraction distance, the stronger the attraction force becomes. In other words, the suction gap on the suction surface b corresponds to 1 part of the stroke L in Figure 2, and is very small, so a strong suction force (line f in Figure 2) is generated, and as the gap decreases, the suction force decreases. increase Also, the suction gap of the suction surface c corresponds to the stroke L2 in Fig. 2, and although the suction force is weak (line g in Fig. 2), a large stroke is obtained. Here, to explain the connection between the operation of the suction plate 13 and the suction ring 14, the electromagnet 17
When energized, the suction surface b pulls up the suction ring 14 by a stroke L1 . At this time, the shelf part a of the suction ring 14 pushes up the suction plate 13 and operates it by the same stroke L1 as the suction ring 14. Therefore, the suction plate 13 will pull up the pilot valve body 4 by a stroke L of 1 minute. When the pilot valve body 4 is lifted by a stroke L1 , the upper pressure of the main valve body 3 is released from the pilot valve seat 5 through the hole 3b. The suction plate 13, which has been further pushed up by a stroke L1 , is attracted toward the suction surface c by a stroke L2 , and the main valve body 3 is engaged and pulled up by the pulling up of the pilot valve body 4, leading to the full opening. Another factor that inhibits the operation of the suction plate 13 and the suction ring 14 is mutual suction. This suction plate 13
In order to prevent mutual adsorption between the suction ring 14 and the suction ring 14, an isolation tube 16 is provided inside the suction ring 14, and a separation plate 15 is provided on the upper surface of the shelf a.
次に全開から弁を閉める場合には、電磁石１７
への通電を解除する。吸着面ｂと吸着面ｃの吸引
作用はなくなり、吸着板１３及び吸着リング１４
は自重により、弁の閉方向に下降する。ここでス
プリング１０は、このパイロツト弁体４の閉作動
を確実に行わしめるため設けられた閉方向用補助
スプリングである。近接スイツチ２１はこのよう
な開閉作動をする弁の開度を検出するため設けら
れた開度検出スイツチである。吸着板１３に取付
けられた検出棒１８は弁の開閉作動に忠実に従
う。このため、検出棒１８の先端に設けられた検
出片１９が上下動し、検出スリーブ２０を介し
て、外部への貫通部なしで近接スイツチ２１を作
動させて開閉信号を発する。 Next, when closing the valve from fully open, the electromagnet 17
de-energize. The suction action between suction surface b and suction surface c disappears, and suction plate 13 and suction ring 14
falls in the direction of valve closing due to its own weight. Here, the spring 10 is an auxiliary spring for the closing direction provided to ensure the closing operation of the pilot valve body 4. The proximity switch 21 is an opening detection switch provided to detect the opening of a valve that performs such opening/closing operations. The detection rod 18 attached to the suction plate 13 faithfully follows the opening and closing operations of the valve. Therefore, the detection piece 19 provided at the tip of the detection rod 18 moves up and down, and operates the proximity switch 21 to generate an open/close signal through the detection sleeve 20 without any penetration to the outside.
この考案は、前記のように構成され、作用する
ので、流体の流路に連通し、又、流体の漏洩の恐
れのある所は、すべて、静的密封手段により密封
されているので、僅かな漏洩もなく、更に、全閉
状態からの開弁に際しての過大な操作力も、吸着
面との隙間を２通りに構成しているので、容易に
開弁し得る高温高圧用電磁弁が得られる効果を有
している。 Since this device is constructed and operates as described above, all the places that communicate with the fluid flow path and where there is a risk of fluid leakage are sealed by static sealing means, so that there is only a small amount of leakage. There is no leakage, and there is no excessive operating force when opening the valve from a fully closed state.Since the gap between the suction surface and the suction surface is configured in two ways, a high-temperature, high-pressure solenoid valve can be easily opened. have.
第１図はこの考案の高温高圧用電磁弁の１実施
例を閉弁状態で示した断面図、第２図はその操作
力をストロークに対して示したグラフである。
１……弁箱体、２……主弁座、３……主弁体、
４……パイロツト弁体、５……パイロツト弁座、
６……弁棒、７……ピン、８……案内スリーブ、
９……ピストンリング、１０……スプリング、１
１……ボンネツト、１２……ボルト、１３……吸
着板、１４……吸着リング、１５……隔離板、１
６……隔離筒、１７……電磁石、１８……指示
棒、１９……検出片、２０……検出スリーブ、２
１……近接スイツチ、ａ……棚部、ｂ……吸着
面、ｃ……吸着面、ｄ……ボンネツトの首部、Ａ
……入口側、Ｂ……出口側。
FIG. 1 is a cross-sectional view showing one embodiment of the high-temperature, high-pressure solenoid valve of this invention in a closed state, and FIG. 2 is a graph showing the operating force against the stroke. 1...Valve box body, 2...Main valve seat, 3...Main valve body,
4...Pilot valve body, 5...Pilot valve seat,
6... Valve stem, 7... Pin, 8... Guide sleeve,
9...Piston ring, 10...Spring, 1
1... Bonnet, 12... Bolt, 13... Adsorption plate, 14... Adsorption ring, 15... Separation plate, 1
6...Isolation tube, 17...Electromagnet, 18...Indicator rod, 19...Detection piece, 20...Detection sleeve, 2
1... Proximity switch, a... Shelf, b... Adsorption surface, c... Adsorption surface, d... Bonnet neck, A
...Entrance side, B...Exit side.
Claims (1)
と、パイロツト弁体を内蔵し弁棒の下端に設けら
れて前記主弁座を開閉するように電磁石によつて
開閉運動される主弁体とを備える電磁弁におい
て、前記弁棒の上端に固着された吸着板と、棚部
を内径側下端に有しこの棚部上面が隔離板を介し
て前記吸着板の下面と係合可能でありかつ内径部
が隔離筒を介して前記吸着板の外周と摺動自在に
嵌合している吸着リングと、前記吸着板とは大き
い間隙を有すると共に前記吸着リングとは小間隙
を有して位置し吸着板、吸着リングを共に吸引し
引上げる電磁石と、前記吸着板の上面に取付けら
れている指示棒の上端部に固着された検出片と、
弁の上部に位置し前記検出片によつて作動する近
接スイツチとを備えていることを特徴とする高温
高圧用電磁弁。 A valve body having a main valve seat between the inlet side and the outlet side and a pilot valve body are built in, and the valve body is provided at the lower end of the valve rod and is moved to open and close by an electromagnet to open and close the main valve seat. A solenoid valve comprising a main valve body, a suction plate fixed to the upper end of the valve stem, and a shelf portion at the lower end on the inner diameter side, the upper surface of the shelf portion engaging with the lower surface of the suction plate via a separator plate. and a suction ring whose inner diameter portion is slidably fitted to the outer periphery of the suction plate via an isolation tube, and a suction ring having a large gap with the suction plate and a small gap with the suction ring. an electromagnet positioned to attract and pull up the suction plate and the suction ring together; a detection piece fixed to the upper end of an indicator rod attached to the top surface of the suction plate;
1. A high-temperature, high-pressure solenoid valve, comprising a proximity switch located above the valve and operated by the detection piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18658680U JPS6336219Y2 (en) | 1980-12-26 | 1980-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18658680U JPS6336219Y2 (en) | 1980-12-26 | 1980-12-26 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57109378U JPS57109378U (en) | 1982-07-06 |
| JPS6336219Y2 true JPS6336219Y2 (en) | 1988-09-26 |
Family
ID=29988653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18658680U Expired JPS6336219Y2 (en) | 1980-12-26 | 1980-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6336219Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5898602B2 (en) * | 2012-10-23 | 2016-04-06 | 川崎重工業株式会社 | Solenoid valve device |
-
1980
- 1980-12-26 JP JP18658680U patent/JPS6336219Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57109378U (en) | 1982-07-06 |
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