JPH033043B2 - - Google Patents
Info
- Publication number
- JPH033043B2 JPH033043B2 JP11836082A JP11836082A JPH033043B2 JP H033043 B2 JPH033043 B2 JP H033043B2 JP 11836082 A JP11836082 A JP 11836082A JP 11836082 A JP11836082 A JP 11836082A JP H033043 B2 JPH033043 B2 JP H033043B2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- valve
- pressure oil
- servo motor
- pilot
- 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
- 230000035939 shock Effects 0.000 claims description 8
- 230000000116 mitigating effect Effects 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 description 11
- 230000001105 regulatory effect Effects 0.000 description 9
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D21/00—Shutting-down of machines or engines, e.g. in emergency; Regulating, controlling, or safety means not otherwise provided for
- F01D21/16—Trip gear
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Turbines (AREA)
Description
【発明の詳細な説明】
本発明は、蒸気弁急閉時レバーに加わる衝撃力
を緩和する蒸気弁制御機構の衝撃緩和装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an impact mitigation device for a steam valve control mechanism that alleviates the impact force applied to a lever when a steam valve is suddenly closed.
第１図に示すように油圧シリンダ２の動作をレ
バー３ａ〜３ｃに伝達し、パイロツト弁５を切換
えることにより、圧油をサーボモータ６の上部圧
油室P3及び下部圧油室P4に供給し、サーボモー
タ６のピストンを上下させ、レバー３ｇ〜３ｉ、
蒸気加減弁カム８、蒸気加減弁レバー９を介し、
車室１０に設置されている蒸気加減弁を制御する
機構と、油圧シリンダ２の動とは別に、蒸気加減
弁を急閉できる電磁急閉弁１１と、それに液的に
接続されているオイルリレーに、さらに、パイロ
ツト弁５上部に、パイロツトと同一軸に連結され
ている加速リレー１３の急閉機構からなる蒸気加
減弁制御機構において、負荷しや断、負荷急減時
に負荷急減閉鎖リレーの電気信号により、急閉電
磁弁１１が励磁され内部スプールが引上げられ、
その動作により液的に接続しているオイルリレー
１２を介し、加速リレー１３の圧油室P6の油が
排油され、パイロツト弁５のパイロツトと連結さ
れている加速リレー１３のピストンがバネによつ
て押し下げられるため、パイロツト弁５のパイロ
ツトが切換えられる。その動作により、圧油がサ
ーボモータ６、上部圧油室P3に供給され、サー
ボモータ６のピストンが下方に押し下げられ、レ
バー３ｇ〜３ｉ、蒸気加減弁カム８、蒸気加減弁
レバー９を介し、蒸気加減弁７を急閉する。その
際、サーボモータ６に連結されているレバー３ｆ
は、サーボモータが下方にストロークすることに
より、同様に下方に動く。その為、レバー３ｅは
Ｄ点を支点として連結しているレバー３ｄを押し
上げる。その動作により、レバー３ｃはＢ点を支
点としてレバー３ｄに押し上げげられ、ストツパ
ー１４に当たる。さらに、レバー３ｃはＧ点を支
点としてレバー３ｂを介して、レバー３ａを急激
に押し下げる。しかし、油圧シリンダ２の下部圧
油室P2から排油される油量がないため、油圧シ
リンダ２のピストンは固定点と同様な状態とな
り、従来のように、油圧シリンダ２のピストンと
レバー３ａが連結棒１５によつて、単に連結され
ていると連結棒１５又は連結棒１５とレバー３ａ
の接手部に過大な衝撃力が加わり、切損又は破損
する危険性があつた。 As shown in FIG. 1, by transmitting the operation of the hydraulic cylinder 2 to the levers 3a to 3c and switching the pilot valve 5, pressure oil is transferred to the upper pressure oil chamber P3 and the lower pressure oil chamber P4 of the servo motor 6. supply and move the piston of the servo motor 6 up and down, levers 3g to 3i,
Via the steam control valve cam 8 and the steam control valve lever 9,
A mechanism for controlling the steam regulating valve installed in the vehicle compartment 10, an electromagnetic quick-closing valve 11 that can quickly close the steam regulating valve separately from the movement of the hydraulic cylinder 2, and an oil relay that is fluidly connected to it. Furthermore, in the steam control valve control mechanism consisting of a quick-closing mechanism of an acceleration relay 13 connected to the upper part of the pilot valve 5 on the same axis as the pilot, an electric signal of the sudden load-reduction closing relay is generated when the load suddenly breaks or the load suddenly decreases. As a result, the quick-closing solenoid valve 11 is energized and the internal spool is pulled up.
As a result of this operation, the oil in the pressure oil chamber P6 of the acceleration relay 13 is drained through the oil relay 12 which is fluidly connected, and the piston of the acceleration relay 13 connected to the pilot of the pilot valve 5 is activated by the spring. As a result, the pilot of the pilot valve 5 is switched. As a result of this operation, pressure oil is supplied to the servo motor 6 and the upper pressure oil chamber P3 , the piston of the servo motor 6 is pushed down, and the pressure oil is supplied to the servo motor 6 and the upper pressure oil chamber P3, and the piston of the servo motor 6 is pushed down. , the steam control valve 7 is suddenly closed. At that time, the lever 3f connected to the servo motor 6
similarly moves downward as the servo motor strokes downward. Therefore, the lever 3e pushes up the connected lever 3d using the point D as a fulcrum. By this action, the lever 3c is pushed up by the lever 3d using point B as a fulcrum, and hits the stopper 14. Further, the lever 3c rapidly pushes down the lever 3a via the lever 3b using the point G as a fulcrum. However, since there is no amount of oil drained from the lower pressure oil chamber P2 of the hydraulic cylinder 2, the piston of the hydraulic cylinder 2 is in the same state as the fixed point, and the piston of the hydraulic cylinder 2 and the lever 3a are not connected to each other as in the conventional case. are simply connected by the connecting rod 15, the connecting rod 15 or the connecting rod 15 and the lever 3a
Excessive impact force was applied to the joints, and there was a risk of breakage or damage.
本発明の目的は、急閉機構の作動により蒸気加
減弁の急閉時に加わるレバー機構への衝撃力を緩
和し、レバー機構の切損、破損を防止、信頼性を
向上させる衝撃緩和装置を提供するにある。 An object of the present invention is to provide an impact mitigation device that reduces the impact force applied to a lever mechanism when a steam control valve is suddenly closed by operating a quick closing mechanism, prevents breakage and damage of the lever mechanism, and improves reliability. There is something to do.
以下、本発明の実施例を第２図により説明す
る。 Embodiments of the present invention will be described below with reference to FIG.
機器構成は、電気的制御信号を油圧信号に変換
するサーボ弁１に液的に接続されている油圧シリ
ンダ２、その動作をパイロツト弁５に伝達する各
レバー３ａ〜３ｃにより、パイロツト弁５を動作
させ、それに液的に接続されているサーボモータ
６に伝達し連結されているレバー３ｇ，３ｈ，３
ｉを介し、加減弁カム８で回転運動に変換し、さ
らに、加減弁レバー９で垂直運動に交換、それに
連結されている車室１０の上部及び下部付の蒸気
加減弁７、さらに、急閉電磁弁１１、それに液的
に接続されているオイルリレー１２を介して、通
常制御とは別にパイロツト弁５を動作させる加速
リレー１３をパイロツト弁５の上部にパイロツト
弁５と一体構造にして備えている。又、本発明の
衝撃緩和装置である引張バネ１６は、油シリンダ
２とレバー３ａを連結する部分に備えている。 The equipment configuration includes a hydraulic cylinder 2 that is fluidly connected to a servo valve 1 that converts an electrical control signal into a hydraulic signal, and levers 3a to 3c that transmit the operation to the pilot valve 5 to operate the pilot valve 5. levers 3g, 3h, 3 which are transmitted and connected to a servo motor 6 which is fluidly connected thereto.
i, the control valve cam 8 converts it into rotational motion, and the control valve lever 9 converts it into vertical movement, and the steam control valve 7 with the upper and lower parts of the casing 10 connected thereto, and then the quick closing. An acceleration relay 13 is provided above the pilot valve 5 and integrated with the pilot valve 5 to operate the pilot valve 5 separately from normal control via the solenoid valve 11 and an oil relay 12 that is fluidly connected to the solenoid valve 11. There is. Further, a tension spring 16, which is a shock absorbing device of the present invention, is provided at a portion connecting the oil cylinder 2 and the lever 3a.
次に、蒸気加減弁７の開閉動作（通常制御）に
ついて説明する。 Next, the opening/closing operation (normal control) of the steam control valve 7 will be explained.
まず、開動作であるが、電気的制御信号（開指
令信号）により、サーボ弁１の内部にあるスプー
ル（図示せず）が切換えられ、油圧シリンダ２の
下部圧油室P2に圧油が供給されると同時に、上
部圧油室P1の油はサーボ弁１を通り排油される。
それによつて、油圧シリンダ２のピストンは上方
向にストロークする。油圧シリンダ２の動きは衝
撃緩和装置である引張バネ１６を介し、レバー３
ａに伝達される。レバー３ａはＡ点を支点とし
て、レバー３ｂを押上げる。レバー３ｃはレバー
３ｂの動きによりＣ点を支点として押上げられる
ため、レバー３ｃの中央部に連結されているパイ
ロツト弁５のパイロツトを上方にストロークさせ
る。パイロツト弁５のパイロツトが上方にストロ
ークすることにより、圧油は、パイロツト弁５の
ポートａからサーボモータ６の下部圧油室P4に
供給されると同時に、サーボモータ６の上部圧油
室P3の油はパイロツト弁５のポートｂ，ポート
ｄを通り排油される。それによつて、サーボモー
タ６のピストンは上方にストロークし、レバー３
ｇ，３ｈを介し、Ｅ点を支点としレバー３ｉを直
線運動を加激弁カム８によつて回転運動に変換
し、加減弁レバー９をＦ点を支点として持上げ、
蒸気加減弁７を上方にストロークさせ、開動作を
行なう。又、サーボモータ６が上方にストローク
することにより、サーボモータ６に連結されてい
るレバー３ｆも上方に動くため、レバー３ｅはＤ
点を支点として連結されているレバー３ｄを引下
げる。その動作によりレバー３ｄに連結されてい
るレバー３ｃはＢ点を支点として引下げられ、レ
バー３ｃの中央部に連結されているパイロツト弁
５のパイロツトを押下げ圧油が、パイロツト弁５
のポートａからサーボモータ６の下部圧油室P4
に流れるのを防ぐと同時にサーボモータ６の上部
圧油室P3の油がパイロツト弁５のポートｂ、ポ
ートｄを通り、排油されるのを防ぐことにより、
サーボモータ６を任意のストロークで保持でき
る。従つて、レバー３ｇ，３ｈ及び３ｉを介して
連結されている蒸気加減弁７も任意のストローク
位置に保つ事ができ、一定の開度で保持できる。 First, in the opening operation, the spool (not shown) inside the servo valve 1 is switched by an electrical control signal (open command signal), and pressure oil is supplied to the lower pressure oil chamber P 2 of the hydraulic cylinder 2. At the same time as being supplied, the oil in the upper pressure oil chamber P1 passes through the servo valve 1 and is drained.
Thereby, the piston of the hydraulic cylinder 2 strokes upward. The movement of the hydraulic cylinder 2 is controlled by the lever 3 via a tension spring 16 which is a shock absorbing device.
transmitted to a. The lever 3a pushes up the lever 3b using point A as a fulcrum. Since the lever 3c is pushed up using point C as a fulcrum by the movement of the lever 3b, the pilot of the pilot valve 5 connected to the center of the lever 3c is stroked upward. As the pilot of the pilot valve 5 strokes upward, pressure oil is supplied from port a of the pilot valve 5 to the lower pressure oil chamber P4 of the servo motor 6, and at the same time, to the upper pressure oil chamber P of the servo motor 6. 3 is drained through ports b and d of the pilot valve 5. As a result, the piston of the servo motor 6 strokes upward, and the lever 3
g and 3h, convert the linear motion of the lever 3i into rotational motion using the acceleration valve cam 8 with the E point as the fulcrum, and lift the regulating valve lever 9 using the F point as the fulcrum.
The steam control valve 7 is stroked upward to perform an opening operation. Furthermore, as the servo motor 6 strokes upward, the lever 3f connected to the servo motor 6 also moves upward, so the lever 3e moves upward.
Pull down the connected lever 3d using the point as a fulcrum. As a result of this action, the lever 3c connected to the lever 3d is pulled down using point B as a fulcrum, and pressurized oil pushes down the pilot of the pilot valve 5 connected to the center of the lever 3c.
from port a of servo motor 6 to lower pressure oil chamber P 4
At the same time, the oil in the upper pressure oil chamber P3 of the servo motor 6 is prevented from passing through ports b and d of the pilot valve 5 and being drained.
The servo motor 6 can be held at any stroke. Therefore, the steam control valve 7 connected via the levers 3g, 3h, and 3i can also be maintained at any stroke position and maintained at a constant opening degree.
次に、開動作について説明する。電気的制御信
号（閉指令信号）によりサーボ弁１の内部にある
スプール（図示せず）が切換えられ、油圧シリン
ダ２の上部圧油室P1に圧油が供給されると同時
に、下部圧油室P2の油はサーボ弁２を通つて排
油される。それによつて、油圧シリンダ２のピス
トンは下方向にストロークする。油圧シリンダ２
の動きは、衝撃緩和装置である引張りバネ１６を
介し、レバー３ａに伝達される。レバー３ａはＡ
点を支点としてレバー３ｂを引下げる。レバー３
ｃはレバー３ｂの動きによりＣ点を支点として引
下げられるため、レバー３ｃの中央部に連結され
ているパイロツト弁５のパイロツトを下方にスト
ロークさせる。その動作により、圧油はパイロツ
ト弁５のポートｂからサーボモータ６の上部圧油
室P3に供給されると同時に、サーボモータ６の
下部圧油室P4の油はパイロツト弁５のポートａ，
ポートｃを通つて排油される。それによつて、サ
ーボモータ６のピストンは下方にストロークし、
レバー３ｇ，３ｈを介しＥ点を支点としてレバー
３ｉを直線運動させる。レバー３ｉの直線運動を
加減弁カム８によつて回転運動に変換し、加減弁
カム８に、バネ力によつて押付けられている加減
弁レバー９は、Ｆ点を支点として押下げられ、蒸
気加減弁７を下方にストロークさせ閉動作を行な
う。又、サーボモータ６が下方にストロークする
ことにより、サーボモータ６に連結されているレ
バー３ｆも下方に動くため、レバー３ｅはＤ点を
支点として連結されているレバー３ｄを押上げ
る。その動作により、レバー３ｄに連結されてい
るレバー３ｃはＢ点を支点としてレバー３ｄに押
上げられ、レバー３ｃの中央部に連結されている
パイロツト弁５のパイロツトを引上げ、圧油がパ
イロツト弁５のポートｂからサーボモータ６の上
部圧油室P3に流れるのを防ぐと同時に、サーボ
モータ６の下部圧油室P4の油がパイロツト弁５
のポートａ，ポートｃを通り排油されるのを防ぐ
ことにより、サーボモータ６を任意のストローク
で保持できる。従つて、レバー３ｇ，３ｈ及び３
ｉを介して連結されている蒸気加減弁７も任意の
ストローク位置に保つ事ができ一定の開度で保持
できる。 Next, the opening operation will be explained. The spool (not shown) inside the servo valve 1 is switched by an electrical control signal (close command signal), and pressure oil is supplied to the upper pressure oil chamber P1 of the hydraulic cylinder 2, and at the same time, the lower pressure oil is supplied to the upper pressure oil chamber P1 of the hydraulic cylinder 2 . The oil in chamber P 2 is drained through servo valve 2 . Thereby, the piston of the hydraulic cylinder 2 strokes downward. Hydraulic cylinder 2
The movement is transmitted to the lever 3a via the tension spring 16, which is a shock absorbing device. Lever 3a is A
Using the point as a fulcrum, pull down the lever 3b. Lever 3
C is pulled down using point C as a fulcrum by the movement of lever 3b, thereby causing the pilot of pilot valve 5 connected to the center of lever 3c to stroke downward. Through this operation, pressure oil is supplied from port b of the pilot valve 5 to the upper pressure oil chamber P3 of the servo motor 6, and at the same time, oil in the lower pressure oil chamber P4 of the servo motor 6 is supplied to the port a of the pilot valve 5. ，
The oil is drained through port c. As a result, the piston of the servo motor 6 strokes downward,
The lever 3i is moved linearly using the levers 3g and 3h using the point E as a fulcrum. The linear motion of the lever 3i is converted into rotational motion by the regulating valve cam 8, and the regulating valve lever 9, which is pressed against the regulating valve cam 8 by a spring force, is pushed down using point F as a fulcrum, and the steam is released. The regulating valve 7 is stroked downward to perform a closing operation. Further, as the servo motor 6 strokes downward, the lever 3f connected to the servo motor 6 also moves downward, so the lever 3e pushes up the lever 3d connected to it using point D as a fulcrum. Due to this operation, the lever 3c connected to the lever 3d is pushed up by the lever 3d using point B as a fulcrum, and the pilot of the pilot valve 5 connected to the center of the lever 3c is pulled up, and the pressure oil flows into the pilot valve 5. At the same time, oil in the lower pressure oil chamber P4 of the servo motor 6 is prevented from flowing from port b to the upper pressure oil chamber P3 of the servo motor 6 through the pilot valve 5.
By preventing oil from being drained through port a and port c, the servo motor 6 can be held at an arbitrary stroke. Therefore, levers 3g, 3h and 3
The steam control valve 7 connected via i can also be maintained at any stroke position and maintained at a constant opening.
以上の様に蒸気加減弁７は、衝撃緩和装置が引
張バネ１６となつているため、剛体とみなすこと
ができ、油圧シリンダ２の動作を問題なく伝達
し、通常の制御を支障なくできる。 As described above, the steam control valve 7 can be regarded as a rigid body because the shock absorbing device is the tension spring 16, and the operation of the hydraulic cylinder 2 can be transmitted without problems and normal control can be performed without any problems.
次に急閉時について説明する。通常の制御時
は、圧油はサーボ弁１を通り油圧シリンダ２に供
給される一方、同一配管上で分岐されており、急
閉電磁弁１１、オイルリレー１２を介して、加速
リレー１３にも供給されている。圧油は急閉電磁
弁１１ポートｅからポートｆを通り、オイルリレ
ー１２圧油室に流れ上部バネ力に打勝つ力で内部
パイロツトを押上げるため、急閉電磁弁１１の前
で分岐されている圧油はオイルリレー１２ポート
ｈからポートｊを通り加速リレー１３圧油室P6
に供給され、上部バネ力に打勝つ力で内部ピスト
ンを押上げているため、通常制御時は、動作しな
い。しかし、負荷急減時、又は、負荷しや断時、
負荷急減閉鎖リレーからの電気信号により急閉電
磁弁１１が励磁され、内部のスプールが引上げら
れる。その動作によりオイルリレー１２圧油室
P5の油は急閉電磁弁１１ポートｆからポートｇ
を通り排油される。オイルリレー１２圧油室P5
の油が排油されることによりオイルリレー１２の
上部のバネ力により、内部パイロツトは押下げら
れ、加速リレー１３圧油室P6の油はオイルリレ
ー１２ポートｊからポートｉを通り排油される。
加速リレー１３シリンダとパイロツト弁５パイロ
ツトは連結しているため、加速リレー１３圧油室
P6の油が排油される事により加速リレー１３の
シリンダが下がるとパイロツト弁５のパイロツト
も下がり、圧油はパイロツト弁５ポートｂからサ
ーボモータ６の上部圧油室P3に急激に供給され、
サーボモータ６の下部圧油室P4の油はパイロツ
ト弁５ポートａ、ポートｃを通り、急激に排油さ
れる。それによつてサーボモータ６のピストンは
急激に下方にストロークし、レバー３ｇ，３ｈを
介して、Ｅ点を支点としレバー３ｉに直線運動と
して伝達し、加減弁カム８によつて回転運動に交
換し、加減弁カム８にバネ力によつて押付けられ
ている加減弁レバー９をＦ点を支点として押下
げ、加減弁レバー９に連結されている蒸気加減弁
７を急閉させる。又、一方、サーボモータ６のピ
ストンが急激に下方にストロークすることによ
り、サーボモータ６に連結されているレバー３ｆ
も下方に動くため、レバー３ｅはＤ点を支点とし
て連結されているレバー３ｄを押上げる。その動
作によりレバー３ｄに連結されているレバー３ｃ
はＢ点を支点として急激にレバー３ｃを押上げる
ため、ストツパー１４に当たり、次にレバー３ｃ
はストツパー１４に当つた点を支点としレバー３
ｂを押下げようとする。しかし、油圧シリンダ２
のP2下部圧油室の油は排油されないので、油圧
シリンダ２のピストンは下がらずに、衝撃緩和装
置の引張バネ１６が伸び、レバー３ａが押下げら
れ、レバー３ａ，３ｂ及びその接手部に作用する
衝撃力を緩和することができる。 Next, sudden closing will be explained. During normal control, pressure oil is supplied to the hydraulic cylinder 2 through the servo valve 1, but is also branched on the same piping, and is also supplied to the acceleration relay 13 via the quick-closing solenoid valve 11 and oil relay 12. Supplied. Pressure oil passes from quick-close solenoid valve 11 port e to port f, flows to oil relay 12 pressure oil chamber, and is branched in front of quick-close solenoid valve 11 in order to push up the internal pilot with a force that overcomes the upper spring force. The pressure oil is passed from oil relay 12 port h to port j to acceleration relay 13 pressure oil chamber P 6
The internal piston is pushed up with a force that overcomes the upper spring force, so it does not operate during normal control. However, when the load suddenly decreases or the load suddenly stops,
The quick-closing electromagnetic valve 11 is energized by an electric signal from the sudden load closure relay, and the internal spool is pulled up. Due to its operation, the oil relay 12 pressure oil chamber
The oil in P5 is from quick-closing solenoid valve 11 port f to port g.
The oil is drained through the Oil relay 12 pressure oil chamber P 5
As the oil is drained, the internal pilot is pushed down by the spring force at the top of the oil relay 12, and the oil in the pressure oil chamber P6 of the acceleration relay 13 is drained from the oil relay 12 port j to port i. Ru.
Acceleration relay 13 cylinder and pilot valve 5 pilot are connected, so acceleration relay 13 pressure oil chamber
When the cylinder of the acceleration relay 13 is lowered by draining the oil of P6 , the pilot of the pilot valve 5 is also lowered, and pressure oil is suddenly supplied from the pilot valve 5 port b to the upper pressure oil chamber P3 of the servo motor 6. is,
The oil in the lower pressure oil chamber P4 of the servo motor 6 passes through ports a and c of the pilot valve 5 and is rapidly drained. As a result, the piston of the servo motor 6 suddenly strokes downward, and the linear motion is transmitted to the lever 3i via the levers 3g and 3h, using point E as a fulcrum, and then converted into a rotational motion by the adjusting valve cam 8. , the control valve lever 9 pressed against the control valve cam 8 by a spring force is pushed down using point F as a fulcrum, and the steam control valve 7 connected to the control valve lever 9 is suddenly closed. On the other hand, when the piston of the servo motor 6 suddenly strokes downward, the lever 3f connected to the servo motor 6
Since the lever 3e also moves downward, the lever 3e pushes up the connected lever 3d using the point D as a fulcrum. The lever 3c is connected to the lever 3d by its operation.
The lever 3c is suddenly pushed up using point B as a fulcrum, so it hits the stopper 14, and then the lever 3c
The lever 3 uses the point where it hits the stopper 14 as a fulcrum.
Try to push down b. However, hydraulic cylinder 2
P2 Since the oil in the lower pressure oil chamber is not drained, the piston of the hydraulic cylinder 2 does not go down, but the tension spring 16 of the shock absorbing device extends, the lever 3a is pushed down, and the levers 3a, 3b and their joints are It is possible to alleviate the impact force acting on the
本発明によれば、油圧シリンダ２とレバー３ａ
の連結部に引張バネ１６からなる衝撃緩和装置を
設けることにより、蒸気加減弁７の急閉時にレバ
ー３ａ，３ｂ及びその接手部に作用する衝撃力を
緩和し、レバー、接手部の破損、切損を防止する
ことができる。 According to the invention, the hydraulic cylinder 2 and the lever 3a
By providing a shock absorbing device consisting of a tension spring 16 at the connecting part of the levers 3a and 3b and their joints when the steam control valve 7 is suddenly closed, the impact force acting on the levers 3a and 3b and their joints is reduced, thereby preventing damage or disconnection of the levers and joints. losses can be prevented.
第１図は従来の蒸気加減弁制御機構図、第２図
は本発明の衝撃緩和装置付蒸気加減弁制御機構図
である。
７……蒸気加減弁、３ａ……レバー、１６……
引張バネ。
FIG. 1 is a diagram of a conventional steam regulating valve control mechanism, and FIG. 2 is a diagram of a steam regulating valve control mechanism with a shock absorbing device according to the present invention. 7...Steam control valve, 3a...Lever, 16...
tension spring.
Claims (1)
をレバーで連結し、前記油圧シリンダの動作を前
記パイロツト弁及び前記サーボモータに伝達し、
蒸気加減弁を制御する制御機構において、前記油
圧シリンダと前記レバーの連結部に引張バネを設
けたことを特徴とする蒸気タービン蒸気弁制御機
構の衝撃緩和装置。1. A hydraulic cylinder, a pilot valve, and a servo motor are connected by a lever, and the operation of the hydraulic cylinder is transmitted to the pilot valve and the servo motor,
1. A shock mitigation device for a steam turbine steam valve control mechanism, characterized in that a tension spring is provided at a connecting portion between the hydraulic cylinder and the lever in the control mechanism for controlling a steam control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11836082A JPS5910707A (en) | 1982-07-09 | 1982-07-09 | Impact reliever for steam valve control mechanism of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11836082A JPS5910707A (en) | 1982-07-09 | 1982-07-09 | Impact reliever for steam valve control mechanism of steam turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5910707A JPS5910707A (en) | 1984-01-20 |
| JPH033043B2 true JPH033043B2 (en) | 1991-01-17 |
Family
ID=14734776
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11836082A Granted JPS5910707A (en) | 1982-07-09 | 1982-07-09 | Impact reliever for steam valve control mechanism of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5910707A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103511004B (en) * | 2013-09-17 | 2015-05-13 | 上海新力机器厂 | Closed electro-hydraulic actuator and assembly of closed electro-hydraulic actuator |
-
1982
- 1982-07-09 JP JP11836082A patent/JPS5910707A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5910707A (en) | 1984-01-20 |
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