JPH0241677B2 - - Google Patents
Info
- Publication number
- JPH0241677B2 JPH0241677B2 JP13458982A JP13458982A JPH0241677B2 JP H0241677 B2 JPH0241677 B2 JP H0241677B2 JP 13458982 A JP13458982 A JP 13458982A JP 13458982 A JP13458982 A JP 13458982A JP H0241677 B2 JPH0241677 B2 JP H0241677B2
- Authority
- JP
- Japan
- Prior art keywords
- dart
- bevel gear
- valve
- valve body
- pots
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/16—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
- F16K1/18—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
- F16K1/22—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
- F16K1/221—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves specially adapted operating means therefor
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
- Mechanically-Actuated Valves (AREA)
Description
【発明の詳細な説明】
本発明はバタフライ弁の緊急閉止装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an emergency closing device for a butterfly valve.
一般的にバタフライ弁は弁体と一体的に設けら
れた弁棒を介して、開閉用アクチユエータの作動
により弁体を回動させる機構となつている。この
バタフライ弁の機構にあつて、緊急時に弁体を閉
止させる場合には、ウオーターハンマー現象等の
発生を防止するため、ダツシユポツトとの間に介
在させる技術が知られているが、従来の装置は、
そのダツシユポツトが一つのみであるためウエイ
トトルクと対応させるためのギア、軸等の要素に
はかなりの強度が要求されることになり、それに
耐えるだけの肉厚、太さ、硬度を備えなければな
らず、コストの点でも高騰する一因となつていた
ところである。 In general, a butterfly valve has a mechanism in which the valve body is rotated by the operation of an opening/closing actuator via a valve stem that is provided integrally with the valve body. Regarding this butterfly valve mechanism, when closing the valve body in an emergency, there is a known technique in which the valve body is interposed between the valve body and the dart pot in order to prevent the occurrence of water hammer phenomena, etc. However, conventional devices ,
Since there is only one dart pot, the gears, shafts, and other elements needed to handle the weight torque must be extremely strong, and they must be thick, thick, and hard enough to withstand the weight torque. However, this was one of the reasons for the soaring cost.
そこで、本発明は斯かる点に着目してなされた
もので、ギヤや軸等の要素に要求される強度を半
減させ、コストダウンを図ることができ、緊急閉
止作動における緩衝もより確実になすことができ
るようにしたバタフライ弁の緊急閉止装置を提供
するもので、その要旨とするところは弁体に一体
的に設けられた弁棒と、開閉用アクチユエータの
軸に相互に係合するクラツチ部材を備え、前記弁
棒に径の異なる大小のベベルギアを取り付け、そ
のベベルギアのうち小径の方に一対のダツシユポ
ツトと連動する各々のベベルギアを噛合し、他方
にはブレーキ機構と連動するベベルギアを噛合す
るとともに、前記一対のダツシユポツトの少くと
も一つにはウエイトを連結してあることを特徴と
するバタフライ弁の緊急閉止装置に存する。 Therefore, the present invention has been made with attention to these points, and it is possible to reduce the strength required for elements such as gears and shafts by half, thereby reducing costs, and also ensures more reliable cushioning during emergency closing operations. The purpose of the present invention is to provide an emergency closing device for a butterfly valve that can be used to close a butterfly valve. bevel gears of different diameters are attached to the valve stem, the smaller diameter of the bevel gears is engaged with each bevel gear that is interlocked with a pair of dart pots, and the other is engaged with a bevel gear that is interlocked with a brake mechanism. The present invention resides in an emergency closing device for a butterfly valve, characterized in that a weight is connected to at least one of the pair of dart pots.
次に、本発明の実施の一例を図面を参照して説
明する。 Next, an example of implementation of the present invention will be described with reference to the drawings.
図中１は弁体であり、この弁体１には上方に一
体的に延設された弁棒２が設けられており、弁体
１はこの弁棒２回りを回動するものとなつてい
る。弁棒２はギヤケース３を設置面に固定するた
めのスタンド４内を貫通してギヤケース３内にそ
の上部が挿入されているもので、その上端には下
部クラツチ部材５が備えられている。 In the figure, 1 is a valve body, and this valve body 1 is provided with a valve stem 2 that integrally extends upward, and the valve body 1 rotates around this valve stem 2. There is. The valve stem 2 has its upper part inserted into the gear case 3 by passing through a stand 4 for fixing the gear case 3 to an installation surface, and a lower clutch member 5 is provided at its upper end.
一方、ギアケース３の上面開口にはケースカバ
ー６が固設され、このケースカバー６の上部には
デイスタンスピース７を介して開閉用アクチユエ
ータ８が取り付けられており、この開閉用アクチ
ユエータ８にはハンドル９が設けられている。 On the other hand, a case cover 6 is fixed to the upper opening of the gear case 3, and an opening/closing actuator 8 is attached to the upper part of the case cover 6 via a distance piece 7. A handle 9 is provided.
この開閉用アクチユエータ８には出力軸１０が
ケースカバー６を貫通してギヤケース３の上部に
挿入され、出力軸１０と弁棒２は一直線状となる
ように配設されている。 In this opening/closing actuator 8, an output shaft 10 is inserted into the upper part of the gear case 3 through the case cover 6, and the output shaft 10 and the valve rod 2 are arranged in a straight line.
この出力軸１０には前記した下部クラツチ部材
５と係合する上部クラツチ部材１１が備えられて
いる。 The output shaft 10 is provided with an upper clutch member 11 that engages with the lower clutch member 5 described above.
又、ギヤケース３内に挿入された弁棒２には下
部クラツチ部材５の下方には大径ベベルギア１２
と小径ベベルギア１３が重合状態で取り付けられ
ており、大径ベベルギア１２は働磁ブレーキ１４
の軸端に取り付けられたベベルギア１５と噛合さ
れている。 Further, a large diameter bevel gear 12 is provided below the lower clutch member 5 on the valve stem 2 inserted into the gear case 3.
and a small diameter bevel gear 13 are attached in an overlapping state, and a large diameter bevel gear 12 is attached to a working magnetic brake 14.
It is meshed with a bevel gear 15 attached to the shaft end of the shaft.
一方、小径ベベルギア１３には一対のダツシユ
ポツト１６，１６の連動軸端に取り付けられたベ
ベルギア１７と各々噛合されるものとなつてい
る。このダツシユポツト１６，１６はギヤケース
３をはさんで対称配置に設けられているもので、
この一対のダツシユポツト１６，１６に少くとも
一つにはウエイト１８が連結されている。 On the other hand, the small-diameter bevel gear 13 is adapted to mesh with a bevel gear 17 attached to the interlocking shaft ends of a pair of dart pots 16, 16, respectively. These dart pots 16, 16 are arranged symmetrically with the gear case 3 in between.
A weight 18 is connected to at least one of the pair of dart pots 16, 16.
本発明に係るバタフライ弁の緊急閉止装置は上
記の如く構成されている。 The emergency closing device for a butterfly valve according to the present invention is constructed as described above.
弁体１を開くには電磁ブレーキ１４を開放し
て、開閉用アクチユエータ８のハンドル９を回転
させて上部クラツチ部材１１部クラツチ部材５と
係合させ弁棒２を介して弁体１を回動させる。こ
の作動によつて大小のベベルギア１２，１３も回
動し、ウエイト１８は上方へ上がり、ウエイトト
ルクを出力できる状態となり、電磁ブレーキを作
動させれば、開状態で固定される。次いで、開閉
用アクチユエータ８のハンドル９を逆転させるこ
とによつて、下部クラツチ部材５は逆転可能な状
態とされる。 To open the valve body 1, open the electromagnetic brake 14, rotate the handle 9 of the opening/closing actuator 8, engage the upper clutch member 11 with the clutch member 5, and rotate the valve body 1 via the valve stem 2. let As a result of this operation, the large and small bevel gears 12 and 13 also rotate, and the weight 18 rises upward to be in a state where it can output weight torque, and when the electromagnetic brake is activated, it is fixed in the open state. Then, by reversing the handle 9 of the opening/closing actuator 8, the lower clutch member 5 is made reversible.
弁体１の緊急時における閉止動作は電磁ブレー
キ１４を開放することのみによつてなされる。ウ
エイト１８の自重による下降によつて生ずるトル
ク出力によつて小径ベベルギア１３に回転力を与
え、弁棒２を介して弁体１を閉止させることがで
きるようになつている。 The closing operation of the valve body 1 in an emergency is performed only by releasing the electromagnetic brake 14. The torque output generated by the weight 18 lowering due to its own weight applies a rotational force to the small-diameter bevel gear 13, thereby making it possible to close the valve body 1 via the valve rod 2.
ここで、ダツシユポツト１６は急激なトルク出
力伝達によつて生ずるウオーターハンマー現象等
の発生を防ぐため、速度調整と衝撃緩和を行うの
であるが、本発明においてはこのダツシユポツト
１６を一対装備しているため、また、その一対の
ダツシユポツト１６，１６が同一の小径ベベルギ
ア１３と噛合されていることによつて同時に作動
して、各々のダツシユポツト１６，１６にかかる
負荷は軽減されウエイトトルク出力に耐えるため
のギヤや軸等の要素の強度の要求が半減されるも
のとなつている。 Here, the dart pot 16 adjusts the speed and cushions the shock in order to prevent the water hammer phenomenon caused by sudden torque output transmission, but in the present invention, a pair of the dart pots 16 are provided. Also, since the pair of dart pots 16, 16 are meshed with the same small diameter bevel gear 13, they operate simultaneously, reducing the load on each dart pot 16, 16, and creating a gear to withstand the weight torque output. The strength requirements for elements such as shafts and shafts have been halved.
即ち、軸等は細径のもので済み、ベベルギアの
肉厚や硬度等も従来に比して、半分のもので済む
こととなつている。そのため、装置自体の価格も
大幅なダウンを図ることが可能となるばかりか、
ダツシユポツトに科せられる速度調整や衝撃緩和
効果も正確なものとなる。 That is, the shaft and the like can be made with a small diameter, and the thickness and hardness of the bevel gear can be reduced to half of those of conventional gears. Therefore, not only can the price of the device itself be significantly reduced, but
The speed adjustment and impact mitigation effect applied to the dart pot will also be accurate.
このように、本発明は優れた利点を有している
もので、本発明を実施することはその実益的価値
が甚だ大なるものがある。 As described above, the present invention has excellent advantages, and implementing the present invention has enormous practical value.
第１図は正面図、第２図は側面図、第３図は平
面図、第４図は第３図中―線に沿つた要部断
面図である。
１……弁体、２……弁棒、５……下部クラツチ
部材、８……開閉用アクチユエータ、１１……上
部クラツチ部材、１２……大径ベベルギア、１３
……小径ベベルギア、１４……電磁ブレーキ、１
５，１７……ベベルギア、１６……ダツシユポツ
ト、１８……ウエイト。
FIG. 1 is a front view, FIG. 2 is a side view, FIG. 3 is a plan view, and FIG. 4 is a sectional view of a main part taken along the line - in FIG. DESCRIPTION OF SYMBOLS 1... Valve body, 2... Valve stem, 5... Lower clutch member, 8... Opening/closing actuator, 11... Upper clutch member, 12... Large diameter bevel gear, 13
...Small diameter bevel gear, 14...Electromagnetic brake, 1
5, 17...bevel gear, 16...dash pot, 18...weight.
Claims (1)
クチユエータの軸に相互に係合するクラツチ部材
を備え、前記弁棒に径の異なる大小のベベルギア
を取り付け、そのベベルギアのうち小径の方に一
対のダツシユポツトと連動する各々のベベルギア
を噛合し、他方にはブレーキ機構と連動するベベ
ルギアを噛合するとともに、前記一対のダツシユ
ポツトの少くとも一つにはウエイトを連結してあ
ることを特徴とするバタフライ弁の緊急閉止装
置。1. A valve stem is provided integrally with the valve body, and a clutch member that mutually engages with the shaft of an opening/closing actuator is provided, and bevel gears of different diameters are attached to the valve stem, and the smaller diameter of the bevel gears is attached to the valve stem. A bevel gear interlocking with a pair of dart pots is engaged with the other, and a bevel gear interlocking with a brake mechanism is engaged with the other, and at least one of the pair of dart pots is connected to a weight. Emergency closing device for butterfly valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13458982A JPS5926673A (en) | 1982-07-31 | 1982-07-31 | Emergency shut-off device for butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13458982A JPS5926673A (en) | 1982-07-31 | 1982-07-31 | Emergency shut-off device for butterfly valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5926673A JPS5926673A (en) | 1984-02-10 |
| JPH0241677B2 true JPH0241677B2 (en) | 1990-09-18 |
Family
ID=15131909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13458982A Granted JPS5926673A (en) | 1982-07-31 | 1982-07-31 | Emergency shut-off device for butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5926673A (en) |
-
1982
- 1982-07-31 JP JP13458982A patent/JPS5926673A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5926673A (en) | 1984-02-10 |
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