JPS61167379A - Opening and closing controller of valve - Google Patents

Opening and closing controller of valve

Info

Publication number
JPS61167379A
JPS61167379A JP723185A JP723185A JPS61167379A JP S61167379 A JPS61167379 A JP S61167379A JP 723185 A JP723185 A JP 723185A JP 723185 A JP723185 A JP 723185A JP S61167379 A JPS61167379 A JP S61167379A
Authority
JP
Japan
Prior art keywords
motor
valve
polarity
terminal
current
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
Application number
JP723185A
Other languages
Japanese (ja)
Inventor
Chiyuu Kawaguchiya
川口屋　仲
Kiyoji Iemura
家村　喜代次
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
M SYST GIKEN KK
Original Assignee
M SYST GIKEN KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by M SYST GIKEN KK filed Critical M SYST GIKEN KK
Priority to JP723185A priority Critical patent/JPS61167379A/en
Publication of JPS61167379A publication Critical patent/JPS61167379A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
    • H02P1/22—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor in either direction of rotation

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor And Converter Starters (AREA)

Abstract

PURPOSE:To eliminate a detector for detecting the full open and full close of a valve by detecting that a pulsation of a current flowing to a DC motor is eliminated to stop supplying a current to the motor. CONSTITUTION:When a power source is supplied so that a terminal 3 becomes + pole and a terminal 4 becomes - pole, the polarity is switched in a polarity changeover switch 6 so that a terminal 6a becomes positive pole and a terminal 6b becomes negative pole, a DC motor 1 is normally rotated to open a valve 2. When the valve 2 is fully opened, the rotation of the motor 1 is stopped to eliminate the periodicity of a current flowed to the motor 1. The period detected by a period detector 10 becomes larger than a set value, a signal is applied from a comparator 11 to the switch 6, the switch 6 is operated to stop supplying a current to the motor 1.

Description

【発明の詳細な説明】 く技術分野〉 本発明は直流モータにより開閉駆動されるバルブの開閉
制御装置に関する。DETAILED DESCRIPTION OF THE INVENTION Technical Field The present invention relates to an opening/closing control device for a valve that is driven to open and close by a DC motor.

〈従来技術〉 従来、電動バルブにおいては、バルブが全開あるいは全
開になると、トルクスイッチやリミットスイッチ等によ
り全開あるいは全開になったことを検出し、このトルク
スイッチやリミットスイ・ノチ等からの信号によりモー
タへの給電を停止していた。また、従来では、バルブの
開指令と閉指令の信号をそれぞれ専用の配線を経てバル
ブの制御装置に与えるようにしていた。<Prior art> Conventionally, in electric valves, when the valve is fully open or fully open, a torque switch, limit switch, etc. detects that the valve is fully open or fully open, and a signal from the torque switch, limit switch, etc. Power supply to the motor had been stopped. Furthermore, conventionally, signals for a valve opening command and a valve closing command were respectively given to the valve control device through dedicated wiring.

このように、従来では、バルブの全開及び全閉を検出す
るのにトルクスイッチやリミットスイッチ等の検出装置
がバルブの制御装置とは別に必要となること、トルクス
イッチやリミットスイッチ等からの信号をバルブの制御
装置へ伝送するための配線及びバルブの開指令と閉指令
の信号をバルブの制御装置へ伝送するための配線が必要
となることから、コストが高くなるという欠点を有して
いた。In this way, in the past, detection devices such as torque switches and limit switches were required separately from the valve control device to detect fully open and fully closed valves, and signals from torque switches and limit switches were required. This method has the drawback of increasing costs because it requires wiring for transmitting signals to the valve control device and wiring for transmitting valve open and close command signals to the valve control device.

〈発明の目的〉 本発明は上記事情に鑑みてなされたものであり、その目
的は、バルブの全開及び全閉を検出する検出装置とバル
ブの開閉指令信号を伝送する配線をである。<Objective of the Invention> The present invention has been made in view of the above circumstances, and its object is to provide a detection device for detecting fully open and fully closed valves and wiring for transmitting valve opening/closing command signals.

〈発明の構成〉 本発明においては、バルブを駆動する直流モータへ流れ
る電流の上記直流モータの整流子の回転により生じる脈
流の有無を検出する検出手段と、この検出手段からの信
号に応じて上記直流モータへの給電をスイッチングする
スイッチング手段と、電源の極性に基づいて上記直流モ
ータへの給電の極性を切替える極性切替手段とを備え、
上記極性切替手段により上記直流モータの回転方向を切
替えて上記バルブの開閉を行なう。<Structure of the Invention> In the present invention, there is provided a detection means for detecting the presence or absence of pulsating current caused by the rotation of the commutator of the DC motor in the current flowing to the DC motor that drives the valve, and A switching means for switching the power supply to the DC motor, and a polarity switching means for switching the polarity of the power supply to the DC motor based on the polarity of the power supply,
The polarity switching means switches the direction of rotation of the DC motor to open and close the valve.

〈実施例〉 以下、本発明の一実施例を図面に基づいて説明する。<Example> Hereinafter, one embodiment of the present invention will be described based on the drawings.

直流モータ１は、バルブ２を開閉駆動する。この直流モ
ータｌには、端子３，４、ダイオードブリッジ５．極性
切替スイッチ部６を介して図示しない直流電源から給電
される。A DC motor 1 drives a valve 2 to open and close. This DC motor l has terminals 3, 4, a diode bridge 5. Power is supplied from a DC power source (not shown) via the polarity changeover switch section 6 .

極性認識部７は、端子３．４に供給される直流電源の極
性を認識し、端子３，４の極性に応じた信号を極性切替
スイッチ部６に与える。極性切替スイッチ部６は、極性
認識部７からの信号に応じて直流モータ１への給電の極
性を切替える。例えば、端子３が子種で端子４が一極の
ときには、極性切替スイッチ部６は端子６ａを子種、端
子６ｂを一極にして、直流モータｌは正転し、バルブ２
は開動作を行なう。また、端子３が一極で端子４が子種
のときには、極性切替スイッチ部６は端子６ａを一極、
端子６ｂを子種にして、直流モータ１は逆転し、バルブ
２は閉動作を行なう。The polarity recognition section 7 recognizes the polarity of the DC power supply supplied to the terminals 3 and 4, and provides a signal corresponding to the polarity of the terminals 3 and 4 to the polarity changeover switch section 6. The polarity changeover switch section 6 switches the polarity of power supply to the DC motor 1 according to a signal from the polarity recognition section 7 . For example, when the terminal 3 is a slave type and the terminal 4 is a single pole, the polarity changeover switch section 6 sets the terminal 6a as a slave type and the terminal 6b as a single pole, the DC motor l rotates normally, and the valve 2
performs the opening operation. Further, when the terminal 3 is one pole and the terminal 4 is a child, the polarity changeover switch section 6 sets the terminal 6a to one pole,
Using the terminal 6b as a slave, the DC motor 1 rotates in reverse, and the valve 2 performs a closing operation.

電流電圧変換部８は、直流モータ１に流れる電流の変化
を検出し、これを電圧波形に変換する。The current-voltage converter 8 detects a change in the current flowing through the DC motor 1 and converts it into a voltage waveform.

直流モータ１の電機子電流は、ブラシと整流子を介して
供給される。したがって、直流モータ１が回転駆動され
るときには、整流子が回転することにより、直流モータ
１へ供給される電流は周期をもった脈流になる。そして
、直流モータ１が回転駆動されているときには、電流電
圧変換部８から出力される電圧波形は、この電流の脈流
に対応している。振幅増幅部９は、電流電圧変換部８か
らの電圧波形を増幅する。The armature current of the DC motor 1 is supplied via brushes and a commutator. Therefore, when the DC motor 1 is driven to rotate, the commutator rotates, so that the current supplied to the DC motor 1 becomes a pulsating current with a period. When the DC motor 1 is rotationally driven, the voltage waveform output from the current-voltage converter 8 corresponds to this pulsating current. The amplitude amplification section 9 amplifies the voltage waveform from the current-voltage conversion section 8.

周期検出部１０は、電流の脈流に対応した振幅増幅部９
からの電圧波形の周期を検出する。比較部１１は、周期
検出部１０で検出された周期と設定値との大小比較を行
ないζこの比較の結果に応じた信号を極性切替スイッチ
部６に与える。極性切替スイッチ部６は、比較部１１か
らの信号に応じて直流モータ１への給電をスイッチング
する。The period detection section 10 includes an amplitude amplification section 9 corresponding to the pulsating current flow.
Detect the period of the voltage waveform from. The comparison section 11 compares the period detected by the period detection section 10 with the set value and provides a signal according to the result of this comparison to the polarity changeover switch section 6. The polarity changeover switch section 6 switches the power supply to the DC motor 1 according to the signal from the comparison section 11 .

上述のように、直流モータ１が回転駆動されているとき
には、直流モータ１へ供給される電流が周期性をもった
脈流になる。したがって、この電流の脈流の周期性が検
出されると、直流モータｌが回転駆動されていることに
なり、バルブ２の開閉動作が行なわれていることになる
。一方、電流の脈流の周期性が無くなると、直流モータ
１が停止したことになり、バルブ２が全開あるいは全開
の状態にあることになる。As described above, when the DC motor 1 is rotationally driven, the current supplied to the DC motor 1 becomes a periodic pulsating current. Therefore, when the periodicity of this pulsating current is detected, it means that the DC motor 1 is being driven to rotate, and that the valve 2 is being opened and closed. On the other hand, when the periodicity of the pulsating current disappears, it means that the DC motor 1 has stopped, and the valve 2 is in a fully open or completely open state.

いま、端子３が子種、端子４が一極になるように電源を
供給すると、極性切替スイッチ部６において端子６ａが
子種で、端子６ｂが一極になるように極性が切替えられ
、直流モータ１は正転し、バルブ２は開動作を行なう。Now, when power is supplied so that terminal 3 is a child type and terminal 4 is a single pole, the polarity is switched in the polarity changeover switch section 6 so that the terminal 6a is a child type and terminal 6b is a single pole. The motor 1 rotates normally and the valve 2 performs an opening operation.

この状態で、直流モータ１が回転駆動され、バルブ２が
開動作中であると、直流モータ１へ流れる電流が周期性
をもった脈流になる。そして、周期検出部１０で検出さ
れたこの脈流の周期が比較部１１において予じめ設定さ
れた値と比較され、この場合には、電流の周期が設定値
より小であるので、比較部１１から極性切替スイッチ部
６へ信号は与えられず、直流モータ１への給電が続けら
れる。また、端子３が一極、端子４が子種になるように
電源を供給すると、極性切替スイッチ部６において端子
６ａが一極で端子６ｂが子種になるように極性が切替え
られ、直流モータ１は逆転し、バルブ２は閉動作を行な
う。そして、バルブ２が閉動作中であると、上述と同様
の動作で直流モータｌへの給電が続けられる。In this state, when the DC motor 1 is rotationally driven and the valve 2 is in the opening operation, the current flowing to the DC motor 1 becomes a pulsating current with periodicity. Then, the cycle of this pulsating flow detected by the cycle detection unit 10 is compared with a preset value in the comparison unit 11. In this case, since the cycle of the current is smaller than the set value, the comparison unit 11 to the polarity changeover switch section 6, and power supply to the DC motor 1 continues. Furthermore, when power is supplied so that the terminal 3 is a single pole and the terminal 4 is a child type, the polarity is switched in the polarity changeover switch section 6 so that the terminal 6a is a single pole and the terminal 6b is a child type, and the DC motor 1 is reversed, and valve 2 performs a closing operation. While the valve 2 is in the closing operation, power is continued to be supplied to the DC motor 1 in the same manner as described above.

バルブ２が全開あるいは全開になると、バルブ２の駆動
軸がロックして直流モータ１の回転が停止し、直流モー
タ１へ流れる電流の周期性が無くなる。そして、周期検
出部１０で検出された周期が設定値より大になり、比較
部１１から極性切替スイッチ部６へ信号が与えられ、極
性切替スイッチ部６が動作して直流モータ１への給電が
停止される。When the valve 2 is fully opened or completely opened, the drive shaft of the valve 2 is locked, the rotation of the DC motor 1 is stopped, and the periodicity of the current flowing to the DC motor 1 is eliminated. Then, the period detected by the period detection section 10 becomes larger than the set value, a signal is given from the comparison section 11 to the polarity changeover switch section 6, and the polarity changeover switch section 6 operates to stop the power supply to the DC motor 1. will be stopped.

周期検出部１０と比較部１１は、例えば、コンデンサと
スイッチング素子で構成し、コンデンサの充放電を利用
し、直流モータ１の電流の周期性に応じて充放電を繰り
返し、周期性が無くなると、充電電圧が所定値以上ある
いは以下になるのを検出して、極性切替スイッチ部６を
動作させる。あるいは、周期検出部１０と比較部１１を
単安定マルチパイブレークで構成し、直流モータ１の電
流の周期性に応じて出力状態が反転を繰り返し、周期性
が無くなると出力状態が反転しなくなるという単安定マ
ルチバイブレークの動作を利用すればよい。The period detection section 10 and the comparison section 11 are composed of, for example, a capacitor and a switching element, and use charging and discharging of the capacitor to repeat charging and discharging according to the periodicity of the current of the DC motor 1, and when the periodicity disappears, When it is detected that the charging voltage is above or below a predetermined value, the polarity changeover switch section 6 is operated. Alternatively, the period detection section 10 and the comparison section 11 may be configured with a monostable multi-pie break, and the output state will repeatedly invert according to the periodicity of the current of the DC motor 1, and when the periodicity disappears, the output state will no longer invert. You can use the monostable multi-by-break operation.

〈発明の効果〉 以上説明したように、本発明においては、バルブを駆動
する直流モータへ流れる電流の脈流が無くなったことを
検出して、バルブが全開あるいは全開の状態にあるとし
て、直流モータへの給電を停止するとともに、電源の極
性に応じて直流モータへの給電の極性を変えてバルブの
開動作と閉動作を行なうようにしたので、バルブの全開
と全閉を検出する検出装置が不要になり、検出装置から
の全開と全閉を表わす信号を伝送する配線が不要になる
とともに、バルブの開指令と閉指令の信号を伝送する配
線が不要になり、コストの低減が可能になる。<Effects of the Invention> As explained above, in the present invention, it is detected that the pulsating current flowing to the DC motor that drives the valve has disappeared, and the DC motor is determined to be fully open or fully open. In addition to stopping the power supply to the DC motor, the polarity of the power supply to the DC motor is changed according to the polarity of the power supply to open and close the valve. This eliminates the need for wiring to transmit signals indicating fully open and fully closed from the detection device, and also eliminates the need for wiring to transmit signals for valve open and close commands, making it possible to reduce costs. .

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本発明実施例のブロック構成図である。 １・・・直流モータ　　　　２・・・バルブ６・・・極
性切換スイッチ部 ７・・・極性認識部　　　　８・・・電流電圧変換部９
・・・振幅増幅部　　　　１０・・・周期検出部１１・
・・比較部The drawing is a block diagram of an embodiment of the present invention. 1... DC motor 2... Valve 6... Polarity changeover switch section 7... Polarity recognition section 8... Current voltage conversion section 9
...Amplitude amplification section 10...Period detection section 11.
・Comparison section

Claims (1)

【特許請求の範囲】[Claims] （１）バルブを駆動する直流モータへ流れる電流の上記
直流モータの整流子の回転により生じる脈流の有無を検
出する検出手段と、この検出手段からの信号に応じて上
記直流モータへの給電をスイッチングするスイッチング
手段と、電源の極性に基づいて上記直流モータへの給電
の極性を切替える極性切替手段とを備え、上記極性切替
手段により上記直流モータの回転方向を切替えて上記バ
ルブの開閉を行なうことを特徴とするバルブの開閉制御
装置。(1) A detection means for detecting the presence or absence of pulsating current caused by the rotation of the commutator of the DC motor in the current flowing to the DC motor that drives the valve, and a detection means for detecting the presence or absence of pulsating current caused by the rotation of the commutator of the DC motor, and supplying power to the DC motor in accordance with a signal from the detection means. A switching means for switching, and a polarity switching means for switching the polarity of the power supply to the DC motor based on the polarity of the power source, and the polarity switching means switches the direction of rotation of the DC motor to open and close the valve. A valve opening/closing control device featuring:
JP723185A 1985-01-17 1985-01-17 Opening and closing controller of valve Pending JPS61167379A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP723185A JPS61167379A (en) 1985-01-17 1985-01-17 Opening and closing controller of valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP723185A JPS61167379A (en) 1985-01-17 1985-01-17 Opening and closing controller of valve

Publications (1)

Publication Number Publication Date
JPS61167379A true JPS61167379A (en) 1986-07-29

Family

ID=11660218

Family Applications (1)

Application Number Title Priority Date Filing Date
JP723185A Pending JPS61167379A (en) 1985-01-17 1985-01-17 Opening and closing controller of valve

Country Status (1)

Country Link
JP (1) JPS61167379A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50144023A (en) * 1974-05-10 1975-11-19

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50144023A (en) * 1974-05-10 1975-11-19

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