JPH0612497B2 - Automatic temperature control valve - Google Patents
Automatic temperature control valveInfo
- Publication number
- JPH0612497B2 JPH0612497B2 JP21638486A JP21638486A JPH0612497B2 JP H0612497 B2 JPH0612497 B2 JP H0612497B2 JP 21638486 A JP21638486 A JP 21638486A JP 21638486 A JP21638486 A JP 21638486A JP H0612497 B2 JPH0612497 B2 JP H0612497B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- target value
- diaphragm
- set temperature
- valve
- 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 - Fee Related
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- Temperature-Responsive Valves (AREA)
- Control Of Temperature (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は二次側の蒸気温度を自動的に制御する弁に関
し、特に、二次側を一定圧力に維持するように一次側の
流体を減圧して通過せしめる減圧弁を用いて、二次側を
一定温度に維持する自動温度制御弁に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve for automatically controlling the steam temperature on the secondary side, and more particularly to reducing the pressure of the fluid on the primary side so as to maintain the secondary side at a constant pressure. The present invention relates to an automatic temperature control valve that maintains a constant temperature on the secondary side by using a pressure reducing valve that allows the gas to pass.
従来の技術 自動温度制御弁は、制御対象の制御量の検出、目標値と
の比較、偏差に基づく判断・指令等を信号的に処理し
て、弁体を操作する電動機や流体アクチュエータ等の操
作部を制御するものである。2. Description of the Related Art The conventional automatic temperature control valve detects the controlled variable of the controlled object, compares it with the target value, processes the judgment / command based on the deviation in a signal manner, and operates the electric motor or fluid actuator that operates the valve body. It controls the department.
即ち、温度センサーで二次側の温度を検出し、これを設
定機構を通して入力した目標値と比較し、信号的に処理
して、電動機等のアクチュエータを操作して比例動作、
あるいは微分・積分動作、いわゆるＰＩＤ動作をせしめ
る。従って、設定したい所望の目標値を入力するだけ
で、二次側の流体温度を所望の値に自動的に調節するこ
とができる。That is, the temperature of the secondary side is detected by the temperature sensor, this is compared with the target value input through the setting mechanism, processed in a signal manner, and an actuator such as an electric motor is operated to perform a proportional operation,
Alternatively, a differential / integral operation, so-called PID operation is performed. Therefore, the fluid temperature on the secondary side can be automatically adjusted to a desired value only by inputting a desired target value to be set.
発明が解決しようとする課題 しかし、自動制御弁は高価である。これは電動機等のア
クチュエータで直接に、しかも、常時小刻みに素早く弁
体を操作しなければならないので、大出力のアクチュエ
ータ、複雑な信号処理をする制御器を必要とするからで
ある。However, the automatic control valve is expensive. This is because it is necessary to operate the valve element directly and rapidly in small steps at all times with an actuator such as an electric motor, so that a high output actuator and a controller for performing complex signal processing are required.
更にＰＩＤの定数設定が、制御対象により異なる為に困
難であり、うまく設定するには知識・経験を要する。Further, it is difficult to set the PID constant depending on the control target, and knowledge and experience are required to set it properly.
又、設定値に対して目標とする弁の開度が不明の為、指
示値の反応を見ながら徐々に開度を調節しなければなら
ないので応答時間が非常に遅くなる。Further, since the target valve opening with respect to the set value is unknown, it is necessary to gradually adjust the opening while observing the reaction of the indicated value, so the response time becomes very slow.
本発明の技術的課題は、設定温度の変更が容易で、遠隔
制御や自動制御ができ、難しい操作は必要とせず、素早
い応答性を持つ自動温度制御弁を、小出力のアクチュエ
ータを用いて作ることである。The technical problem of the present invention is to make an automatic temperature control valve that can change the set temperature easily, can be remotely controlled or automatically controlled, does not require difficult operation, and has a quick response using a small output actuator. That is.
課題を解決するための手段 上記の技術的課題を解決するために講じた本発明の技術
的手段は、ダイヤフラムの一面に二次側圧力が作用し、
他面に圧力設定ばねの弾性力が作用して、該ダイヤフラ
ムの変位により弁体を操作して流体の通過量を調節する
減圧弁と、上記圧力設定ばねの弾性力を調整する圧力調
整手段と、該圧力調整手段を操作するアクチュエータ
と、該アクチュエータを駆動制御する制御部とから成
り、該制御部に設定温度目標値を入力する設定温度入力
手段と、上記圧力調整手段の絶対位置を検出する位置検
出手段と、上記圧力調整手段の絶対位置と設定温度目標
値との関係を予め記憶しておく記憶部と、該記憶部の記
憶関係と上記設定温度入力手段からの設定温度目標値と
から上記圧力調整手段の操作変位量を演算する演算部と
を設け、該演算部で演算された圧力調整手段の操作変位
量に応じて上記アクチュエータを駆動せしめることを特
徴とするものである。Means for Solving the Problems Technical means of the present invention taken to solve the above technical problems, the secondary side pressure acts on one surface of the diaphragm,
A pressure reducing valve that adjusts the amount of fluid passing by operating the valve body by the displacement of the diaphragm by the elastic force of the pressure setting spring acting on the other surface, and a pressure adjusting means that adjusts the elastic force of the pressure setting spring. A set temperature input means for inputting a set temperature target value to the control portion, and an absolute position of the pressure adjusting means. From the position detection means, a storage unit that stores in advance the relationship between the absolute position of the pressure adjustment unit and the set temperature target value, and the storage relationship of the storage unit and the set temperature target value from the set temperature input unit. A calculating unit for calculating the operation displacement amount of the pressure adjusting unit is provided, and the actuator is driven according to the operation displacement amount of the pressure adjusting unit calculated by the calculating unit.
作用 上記の技術的手段の作用は下記の通りである。Action The action of the above technical means is as follows.
一般的に減圧弁と言われているものは、ダイヤフラムの
変位で主弁を直接に操作し、又はパイロット弁を操作し
てピストン弁等の主弁を間接的に操作する構造である。
ダイヤフラムには一面に二次側の流体圧力を他面に圧力
設定ばねの弾性力を作用せしめる。両力が不平衡であれ
ばダイヤフラムが変位し、弁体を操作して流体の通過量
を調節せしめ、二次側の圧力を圧力設定ばねの弾性力に
対応した値に維持する。Generally, what is called a pressure reducing valve has a structure in which the main valve is directly operated by the displacement of the diaphragm or the pilot valve is operated to indirectly operate the main valve such as a piston valve.
The fluid pressure on the secondary side is applied to one surface of the diaphragm, and the elastic force of the pressure setting spring is applied to the other surface. If both forces are unbalanced, the diaphragm is displaced and the valve body is operated to adjust the amount of passage of the fluid, and the pressure on the secondary side is maintained at a value corresponding to the elastic force of the pressure setting spring.
記憶部には、予め圧力設定ばねの弾性力を調節する圧力
調整手段の軸方向の絶対位置と設定温度目標値との関係
が記憶されているので、任意の設定温度目標値を設定温
度入力手段から入力すると、位置検出手段からの絶対位
置信号と上記記憶関係とから、設定温度目標値に応じた
圧力調整手段の操作変位量が演算部で求められる。この
操作変位量に基づく信号がアクチュエータに送られ、圧
力調整手段を駆動することにより、圧力設定ばねの弾性
力が調整される。この結果、減圧弁の弁体が操作され、
二次側への流体通過量が調節され、二次側温度を圧力設
定ばねの弾性力に対応した値に維持する。Since the storage unit stores in advance the relationship between the absolute position in the axial direction of the pressure adjusting means for adjusting the elastic force of the pressure setting spring and the set temperature target value, an arbitrary set temperature target value can be set. From the absolute position signal from the position detecting means and the above-mentioned memory relationship, the operation displacement amount of the pressure adjusting means corresponding to the set temperature target value is calculated by the calculating section. A signal based on this operation displacement amount is sent to the actuator, and the pressure adjusting means is driven to adjust the elastic force of the pressure setting spring. As a result, the valve element of the pressure reducing valve is operated,
The amount of fluid passing to the secondary side is adjusted to maintain the secondary side temperature at a value corresponding to the elastic force of the pressure setting spring.
このようにアクチュエータは設定温度目標値と二次側温
度の実測値とを比較しながら作動するのではなく、設定
温度目標値と圧力調整手段の絶対位置とを比較し、つま
り圧力調整手段の位置制御をしている為に応答の早い制
御が可能になる。Thus, the actuator does not operate while comparing the set temperature target value and the measured value of the secondary side temperature, but compares the set temperature target value and the absolute position of the pressure adjusting means, that is, the position of the pressure adjusting means. Since the control is performed, control with a quick response is possible.
上記記憶部の記憶関係は、直接実験で求めることができ
る。あるいは、蒸気圧力と温度との間に１対１の対応関
係が成立つ場合は、実験で絶対位置と設定圧力目標値と
の関係を求め、蒸気圧力と温度との関係から演算して求
めることもできる。例えば水蒸気の場合、日本機会学会
蒸気表に示されるように、6.699℃〜374.15℃の飽和水
蒸気であれば圧力との間に１対１の対応関係が成立つ。The storage relationship of the storage unit can be directly obtained by an experiment. Alternatively, if there is a one-to-one correspondence between the steam pressure and the temperature, the relationship between the absolute position and the set pressure target value should be obtained by an experiment, and calculated from the relationship between the steam pressure and the temperature. You can also For example, in the case of steam, as shown in the steam table of the Japan Society of Opportunities, if it is saturated steam of 6.699 ° C to 374.15 ° C, there is a one-to-one correspondence with the pressure.
特有の効果 本発明は下記の特有の効果を生じる。Unique effects The present invention produces the following unique effects.
設定温度目標値を入力することにより二次側温度を容易
に変更することができ、遠隔操作が可能な事は勿論のこ
とであり、またアクチュエータは目標値に向かって一気
に圧力調整手段を操作するので、従来のＰＩＤ制御に比
べて非常に早い温度設定が可能である。即ち、応答性が
向上する。The temperature on the secondary side can be easily changed by inputting the set temperature target value, and it goes without saying that remote control is possible, and the actuator operates the pressure adjusting means at a stretch toward the target value. Therefore, the temperature can be set much faster than the conventional PID control. That is, the responsiveness is improved.
アクチュエータは目標値に向かって一気に作動した後は
停止状態にあるから、運転時間が短く、運転機会も少な
いので、自動制御弁よりも寿命が遥かに長い。Since the actuator is in a stopped state after being operated toward the target value all at once, the operating time is short and the operating opportunity is few, so that the life is much longer than that of the automatic control valve.
また、アクチュエータは圧力調整手段を操作するもの
で、弁体を直接に素早く操作するような苛酷な状態にな
いから、小出力のものでよい。しかも、弁体はダイヤフ
ラム構造によってメカニカルに素早く敏感に操作され
る。Further, since the actuator operates the pressure adjusting means and is not in a harsh state where the valve body is directly and quickly operated, it may have a small output. Moreover, the valve body is mechanically and quickly operated by the diaphragm structure.
また、取付構造上は、アクチュエータで調節ねじを進退
操作するようにしたものであるから、既設の減圧弁にも
容易に取り付けることができる。Further, in terms of mounting structure, since the adjusting screw is moved forward and backward by the actuator, it can be easily mounted on the existing pressure reducing valve.
実施例 上記の技術的手段の具体例を示す実施例を説明する（第
１図参照）。Example An example showing a specific example of the above technical means will be described (see FIG. 1).
本実施例の自動温度制御弁は、メカニカルな減圧弁部１
と、電動機部と、制御部とから成る。The automatic temperature control valve of this embodiment is a mechanical pressure reducing valve unit 1.
And an electric motor section and a control section.
減圧弁部１は従来のものと同様である。流体の入口２と
出口３はそれぞれ一次側通路４と二次側通路５に接続し
て取り付けられる。主弁口７は主弁体６で開閉する。主
弁体６はばねで閉弁方向に付勢して配置し、弁棒を介し
てピストン８に連結する。The pressure reducing valve unit 1 is the same as the conventional one. The fluid inlet 2 and the fluid outlet 3 are connected to the primary passage 4 and the secondary passage 5, respectively. The main valve opening 7 is opened and closed by the main valve body 6. The main valve body 6 is arranged so as to be biased in the valve closing direction by a spring, and is connected to the piston 8 via a valve rod.
ピストン８の下面には出口３側の流体圧力が作用し、上
面には通路９，１１を通して入口２側の流体圧力がパイ
ロット弁体１２で制御されて導入される。パイロット弁
体１２は閉弁方向にばねで付勢され、弁棒を介してダイ
ヤフラム１３の下面に当り、その変位により開弁方向の
操作力を受ける。The fluid pressure on the outlet 3 side acts on the lower surface of the piston 8, and the fluid pressure on the inlet 2 side is introduced into the upper surface through the passages 9 and 11 while being controlled by the pilot valve body 12. The pilot valve body 12 is biased by a spring in the valve closing direction, hits the lower surface of the diaphragm 13 via the valve rod, and receives the operating force in the valve opening direction due to its displacement.
従って、ダイヤフラム１３が下方に変位するとパイロッ
ト弁体１２が押し下げられ、入口２の流体が通路９，１
１を通ってピストン８の上方に導入され、主弁体６がピ
ストン８で押し下げられて主弁口７が開かれ、入口２の
流体が出口３に流れる。また、ダイヤフラム１３が上方
に変位するとパイロット弁体１２がばねで押し上げら
れ、通路９が塞がれ、ピストン８の上方の流体が通路１
１、パイロット弁体１２の弁棒の周囲の空き間、通路１
０を通って出口３に逃げ、ピストン８と主弁体６がばね
で押し上げられ、主弁口７が塞がれる。Therefore, when the diaphragm 13 is displaced downward, the pilot valve body 12 is pushed down, and the fluid at the inlet 2 is passed through the passages 9 and 1.
It is introduced above the piston 8 through 1 and the main valve body 6 is pushed down by the piston 8 to open the main valve opening 7 and the fluid at the inlet 2 flows to the outlet 3. Further, when the diaphragm 13 is displaced upward, the pilot valve body 12 is pushed up by the spring, the passage 9 is closed, and the fluid above the piston 8 passes through the passage 1
1. The space around the valve rod of the pilot valve body 12, the passage 1
It escapes to the outlet 3 through 0, the piston 8 and the main valve body 6 are pushed up by the spring, and the main valve port 7 is closed.
ダイヤフラム１３の上方は細孔１４を通して外気に連結
し、ほぼ一定の外気圧に保たれる。また、ダイヤフラム
１３の上面には圧力設定ばね１６の下端が当り、弾性力
が作用する。圧力設定ばね１６の上端にはばね受け部材
を介して圧力調整手段としての調節ねじ１７の下端が当
り、調節ねじ１７の回転による進退で、圧力設定ばねの
圧縮量を調節して、ダイヤフラム１３に作用する弾性力
を調節できるようになっている。調節ねじ１７は、弁ケ
ーシングの一部を成すばね収容ケース１５に取り付けた
めねじ部材にねじ結合している。The upper part of the diaphragm 13 is connected to the outside air through the pores 14 and is kept at a substantially constant atmospheric pressure. Further, the lower end of the pressure setting spring 16 abuts on the upper surface of the diaphragm 13, and an elastic force acts. The lower end of the adjusting screw 17 as a pressure adjusting means contacts the upper end of the pressure setting spring 16 via a spring receiving member, and the compression amount of the pressure setting spring is adjusted by moving the adjusting screw 17 forward and backward to adjust the diaphragm 13 to the diaphragm 13. The acting elastic force can be adjusted. The adjusting screw 17 is screwed to the screw member for mounting on the spring housing case 15 forming a part of the valve casing.
電動機部をヨーク部材１８をばね収容ケース１５に固定
することによって取り付ける。このとき、調節ねじ１７
と出力軸２０を同一軸上に整合して、六角頭部４２と出
力軸２０の下端部を連結する。The electric motor unit is attached by fixing the yoke member 18 to the spring housing case 15. At this time, the adjusting screw 17
And the output shaft 20 are aligned on the same axis, and the hexagonal head 42 and the lower end of the output shaft 20 are connected.
出力軸２０はボール・スプライン２１の軸を成し、上端
に係止部材２３を設ける。ボールスプライン２１の外周
部材１９には円筒状の連結部材２２を固定する。出力軸
２０の下部に円盤２４を形成する。位置検出手段として
の位置検出センサー２６が取付台２５の下面に取り付け
られ、その検出棒３３が円盤２４の側面に当たる様に配
置される。The output shaft 20 forms the shaft of the ball spline 21, and has a locking member 23 at the upper end. A cylindrical connecting member 22 is fixed to the outer peripheral member 19 of the ball spline 21. A disk 24 is formed below the output shaft 20. A position detecting sensor 26 as a position detecting means is attached to the lower surface of the mounting base 25, and its detecting rod 33 is arranged so as to abut the side surface of the disk 24.
アクチュエータとしての電動機２９と減速機２８を取付
台２５に固定し、その出力軸２７を連結部材２２に挿入
固定する。An electric motor 29 as an actuator and a speed reducer 28 are fixed to a mounting base 25, and an output shaft 27 thereof is inserted and fixed to the connecting member 22.
従って、電動機２９を回転させると減速機２８の出力軸
２７が回転し、連結部材２２と共にスプライン２１の外
周部材が回転し、その回転方向に応じて、出力軸２０が
上下動しながら回転し、調節ねじ１７が右又は左に回転
する。Therefore, when the electric motor 29 is rotated, the output shaft 27 of the speed reducer 28 is rotated, the outer peripheral member of the spline 21 is rotated together with the connecting member 22, and the output shaft 20 is rotated while moving up and down according to the rotation direction, The adjusting screw 17 rotates right or left.
この時同時にセンサー２６の検出棒３３が円盤２４の上
下運動に追従して上下に移動し、その移動量を位置信号
としてとらえる。At this time, the detection rod 33 of the sensor 26 simultaneously moves up and down following the vertical movement of the disk 24, and the amount of movement is captured as a position signal.
電動機２９の横にドライバー３０を配置して、カバー３
６で覆い、防塵、防湿対策を講じる。動力線及びその引
込口の図示は簡略化してある。A driver 30 is arranged beside the electric motor 29 to cover the cover 3
Cover with 6 and take measures against dust and moisture. The illustration of the power line and its inlet is simplified.
制御部は上記の位置検出センサー２６と、演算部として
の比較調節器３１と、設定温度目標値を入力する設定温
度入力手段としての調節計３２と、二次側通路に取り付
けた温度センサー４０とから成る。参照番号３４は端子
台であり、モータードライバー３０、センサー２６に結
線されている。端子台３４と比較調節器３１を信号線３
７で、温度センサー４０は信号線３９で、調節計３２も
信号線で比較調節器３１に連結する。比較調節器３１は
端子台３４の位置に配置してもよい。二次側通路５の流
体温度は温度センサー４０で検出して調節計３２に常
時、あるいは比較的短い間隔で送る。The control unit includes the position detection sensor 26, a comparison controller 31 as a calculation unit, a controller 32 as a set temperature input unit for inputting a set temperature target value, and a temperature sensor 40 attached to the secondary passage. Consists of. Reference numeral 34 is a terminal block, which is connected to the motor driver 30 and the sensor 26. Connect the terminal block 34 and the comparison controller 31 to the signal line 3
In 7, the temperature sensor 40 is connected to the signal line 39, and the controller 32 is also connected to the comparison controller 31 by the signal line. The comparison controller 31 may be arranged at the position of the terminal block 34. The temperature of the fluid in the secondary passage 5 is detected by the temperature sensor 40 and sent to the controller 32 constantly or at relatively short intervals.
調節計３２内の記憶部（図示せず）には圧力設定ばね１
６の弾性力を調節する調節ねじ１７の軸方向の絶対位
置、即ち円盤２４の軸方向の変位と設定温度目標値との
関係が記憶されており、調節計３２を通して所望の設定
温度目標値を入力すれば、比較調節器３１で位置検出セ
ンサー２６からの調節ねじ１７の位置信号と上記記憶関
係とから操作変位量が演算される。A pressure setting spring 1 is stored in a storage unit (not shown) in the controller 32.
The absolute position in the axial direction of the adjusting screw 17 for adjusting the elastic force of 6, that is, the relationship between the axial displacement of the disk 24 and the set temperature target value is stored, and the desired set temperature target value is set through the controller 32. If input, the operation amount of displacement is calculated in the comparison adjuster 31 from the position signal of the adjusting screw 17 from the position detecting sensor 26 and the above memory relation.
ドライバー３０で電動機２９が運転され、調節ねじ１７
が右又は左に目標値に向かって一気に回転し、圧力設定
ばね１６の弾性力が調節される。操作変位量に達したと
きに電動機２９は停止する。The electric motor 29 is driven by the driver 30, and the adjusting screw 17
Rotates right or left toward the target value at once, and the elastic force of the pressure setting spring 16 is adjusted. When the amount of operation displacement is reached, the electric motor 29 stops.
温度センサー４０による検出温度値と設定温度目標値と
の偏差検出値が、偏差基準値よりも大きいときには同様
に、比較調節器３１で操作変位量を演算してこの操作変
位量の信号をドライバー３０に送り、電動機２９を運転
する。偏差基準値以内であれば、電動機２９は作動せ
ず、ダイヤフラム１３によるメカニカルな作動で、圧力
つまり温度制御を行う。Similarly, when the deviation detection value between the temperature value detected by the temperature sensor 40 and the set temperature target value is larger than the deviation reference value, the operation amount of displacement is calculated by the comparison controller 31 and the signal of the operation displacement amount is sent to the driver 30. To drive the electric motor 29. If it is within the deviation reference value, the electric motor 29 does not operate, and the pressure, that is, the temperature is controlled by the mechanical operation of the diaphragm 13.
第１図は本発明の実施例の自動温度制御弁の断面図に制
御部のブロック図を重ねて表示したものである。 １：減圧弁部、５：二次側通路 ６：主弁体、８：ピストン １２：パイロット弁体、１３：ダイヤフラム １５：ばね収容ケース、１６：圧力設定ばね １７：調節ねじ、２０：出力軸 ２１：スプライン、２６：位置検出センサー ２７：減速機の出力軸、２９：電動機 ３０：ドライバー、３１：比較調節器 ３２：調節計、４０：温度センサーFIG. 1 is a cross-sectional view of an automatic temperature control valve according to an embodiment of the present invention, in which a block diagram of a control unit is superimposed and displayed. 1: Pressure reducing valve part, 5: Secondary side passage 6: Main valve body, 8: Piston 12: Pilot valve body, 13: Diaphragm 15: Spring housing case, 16: Pressure setting spring 17: Adjustment screw, 20: Output shaft 21: Spline, 26: Position detection sensor 27: Reduction gear output shaft, 29: Electric motor 30: Driver, 31: Comparative adjuster 32: Controller, 40: Temperature sensor
Claims (1)
し、他面に圧力設定ばねの弾性力が作用して、該ダイヤ
フラムの変位により弁体を操作して流体の通過量を調節
する減圧弁と、上記圧力設定ばねの弾性力を調整する圧
力調整手段と、該圧力調整手段を操作するアクチュエー
タと、該アクチュエータを駆動制御する制御部とから成
り、該制御部に設定温度目標値を入力する設定温度入力
手段と、上記圧力調整手段の絶対位置を検出する位置検
出手段と、上記圧力調整手段の絶対位置と設定温度目標
値との関係を予め記憶しておく記憶部と、該記憶部の記
憶関係と上記設定温度入力手段からの設定温度目標値と
から上記圧力調整手段の操作変位量を演算する演算部と
を設け、該演算部で演算された圧力調整手段の操作変位
量に応じて上記アクチュエータを駆動せしめることを特
徴とする自動温度制御弁。Claim: What is claimed is: 1. A secondary pressure is applied to one surface of the diaphragm, and an elastic force of a pressure setting spring is applied to the other surface of the diaphragm to operate the valve element by the displacement of the diaphragm to adjust the passage amount of fluid. A valve, pressure adjusting means for adjusting the elastic force of the pressure setting spring, an actuator for operating the pressure adjusting means, and a control section for driving and controlling the actuator, and a set temperature target value is input to the control section. Setting temperature input means, position detecting means for detecting the absolute position of the pressure adjusting means, a storage section for storing beforehand the relationship between the absolute position of the pressure adjusting means and the set temperature target value, and the storage section. And a calculation unit for calculating the operation displacement amount of the pressure adjusting unit from the set temperature target value from the set temperature input unit, and according to the operation displacement amount of the pressure adjusting unit calculated by the calculation unit. The above Automatic temperature control valve, characterized in that allowed to drive the Yueta.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21638486A JPH0612497B2 (en) | 1986-09-12 | 1986-09-12 | Automatic temperature control valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP21638486A JPH0612497B2 (en) | 1986-09-12 | 1986-09-12 | Automatic temperature control valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6371711A JPS6371711A (en) | 1988-04-01 |
| JPH0612497B2 true JPH0612497B2 (en) | 1994-02-16 |
Family
ID=16687722
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP21638486A Expired - Fee Related JPH0612497B2 (en) | 1986-09-12 | 1986-09-12 | Automatic temperature control valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612497B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2630850B2 (en) * | 1990-09-14 | 1997-07-16 | 株式会社テイエルブイ | Automatic temperature control valve device |
| US7980481B2 (en) * | 2004-12-08 | 2011-07-19 | Rosemount Inc. | Thermally controlled process interface |
| IT201600079425A1 (en) * | 2016-07-28 | 2018-01-28 | Pietro Fiorentini Spa | CALIBRATION DEVICE FOR A GAS PRESSURE REGULATOR, IN PARTICULAR FOR A PILOT, AND A PRESSURE ADJUSTMENT SYSTEM FOR A GAS INCLUDING SUCH A CALIBRATION DEVICE |
-
1986
- 1986-09-12 JP JP21638486A patent/JPH0612497B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6371711A (en) | 1988-04-01 |
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