WO2021168785A1 - Procédé de commande pour soupape et soupape - Google Patents

Procédé de commande pour soupape et soupape Download PDF

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Publication number
WO2021168785A1
WO2021168785A1 PCT/CN2020/077165 CN2020077165W WO2021168785A1 WO 2021168785 A1 WO2021168785 A1 WO 2021168785A1 CN 2020077165 W CN2020077165 W CN 2020077165W WO 2021168785 A1 WO2021168785 A1 WO 2021168785A1
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WO
WIPO (PCT)
Prior art keywords
valve
voltage
control method
wave
actuator
Prior art date
Application number
PCT/CN2020/077165
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English (en)
Chinese (zh)
Inventor
李瑞锋
朱梓悦
杲先超
Original Assignee
博世力士乐（常州）有限公司
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 博世力士乐（常州）有限公司 filed Critical 博世力士乐（常州）有限公司
Priority to CN202080097637.0A priority Critical patent/CN115103974A/zh
Priority to PCT/CN2020/077165 priority patent/WO2021168785A1/fr
Publication of WO2021168785A1 publication Critical patent/WO2021168785A1/fr

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    • 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
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
    • F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid

Definitions

  • This application relates to the field of valve control. More specifically, the present application relates to a control method for a valve, which aims to improve the operation efficiency of the valve. The application also relates to a valve using the above-mentioned control method.
  • valves are driven by actuators such as electric drives or motors.
  • the actuator is activated and deactivated in response to the release signal.
  • the release signal is usually provided as a step function or a voltage in the form of a square wave. During the operation of the actuator, a constant operating voltage will be delivered to the actuator, and the actuator will therefore output a substantially constant force.
  • the resistance that the actuator has to face during operation varies. For example, when the actuator just starts to actuate, the fluid in the solenoid valve will create more resistance. After the actuator has moved the components in the solenoid valve to the desired position, the resistance faced by the actuator will be significantly different from the resistance at the beginning of the actuation. For example, the resistance of the fluid can be significantly smaller, and it is even possible that the resistance of the fluid is in the opposite direction. It can be seen that the existing control method produces a waste of energy.
  • An object of the present application is to provide a control method for a valve, which uses a variable output voltage to control the valve. Another object of the present application is to provide a valve adopting the above-mentioned control method.
  • a control method for valves including:
  • the actuator When the valve is opened, the actuator receives the first voltage
  • the actuator When the valve is opened in place, the actuator receives the second voltage
  • the second voltage is lower than the first voltage.
  • valve control method and valve of the present application have the advantages of simple structure, easy manufacture, convenient use, etc., which can increase the reversing speed and reduce the operating power consumption of the valve while ensuring the operating reliability of the valve.
  • Fig. 1 is a schematic diagram of the structure of a conventional valve.
  • Fig. 2 is a time-voltage coordinate diagram of a conventional valve control method.
  • Fig. 3 is a time-voltage coordinate diagram of an embodiment of the valve control method of the present application.
  • azimuth terms such as top, bottom, upward, downward, etc. mentioned in this article are defined relative to the directions in the respective drawings. These azimuth terms are relative concepts and vary according to the different positions and practical states of the components. Therefore, these directional terms should not be interpreted as restrictive.
  • Fig. 1 is a schematic diagram of the structure of a conventional valve.
  • Fig. 1 schematically shows the structure of a typical four-way solenoid valve.
  • the illustrated solenoid valve may be, for example, a directional valve.
  • the solenoid valve includes a housing 1, one or two actuators 2, a valve core 3 and one or two springs 4.
  • the actuator 2 is provided at both sides of the housing 1 and has a driving rod 5.
  • the spring 4 is arranged between the valve core 3 and the drive rod 5.
  • both ends of the valve core 3 are provided with a spring 4, a driving rod 5 and an actuator 2, and the valve core 3 is movably arranged in a cavity inside the housing 1.
  • the cavity is in communication with a number of ports.
  • the illustrated embodiment shows ports P, A, B, TA, and TB.
  • the cavity and each port may be filled with working fluid, and during operation, the cavity and the different ports may have different fluid pressures.
  • the spool 3 can be positioned at different positions in the cavity. Different positions of the spool 3 can selectively make the ports P, TA, TB, A and B in fluid communication. For example, when the spool 3 is in the first position, the port P may be in fluid communication with the port A, while the port B may be in fluid communication with the port TB. When the spool 3 is in the second position, the port P can be in fluid communication with the port B, while the port A is in fluid communication with the port TA.
  • the actuator 2 functions as an actuator, and can be connected to an unshown controller and a power source through terminals shown in dashed lines.
  • the controller can selectively control the power source to energize the actuator 2.
  • the valve core 3 will return to the initial position under the action of the springs 4 at both ends.
  • a tail pipe cap 6 may be attached to each of the actuators 2. Even when the actuator 2 is not energized, the tail pipe cap 6 can allow the user to manually operate the valve core 3.
  • Fig. 2 is a time-voltage coordinate diagram of a conventional valve control method.
  • the abscissa in Figure 2 represents time, and the ordinate represents voltage intensity.
  • Fig. 2 schematically shows the change in voltage of the release signal R1 over time. It is easy to understand that the voltage supplied to the actuator 2 also changes in voltage with time along with the release signal, and both the release signal R1 and the supplied voltage are constructed as a step function or a substantially constant square wave.
  • the release signal R1 is configured as a step function or a square wave, and the power supply is configured to output a constant voltage U B to the actuator 2 when the release signal R1 is received. Therefore, the actuator 2 will output a constant actuation force under the action of the constant voltage U B , thereby pushing the spool 3 to move into position.
  • the release signal R1 disappears (not shown), the supplied voltage U B will correspondingly decrease to zero.
  • the resistance generated by the working environment faced by the actuator 2 is inconsistent.
  • the working fluid may have a relatively large pressure
  • the pressure of the working fluid may be relatively high.
  • the small ones even have negative pressure.
  • the spring 4 may have different compression or extension states, thereby generating different elastic forces.
  • the combination of the above-mentioned various forces causes the overall resistance faced by the actuator 2 to be inconsistent and variable during operation.
  • the constant speed processing of the existing actuator 2 causes a loss of energy in this case, because the actuator 2 must first provide a significant driving force to make the spool 3 start to move, and the subsequent overall resistance will be significantly less than The overall resistance when the spool 3 starts to move.
  • Fig. 3 is a time-voltage coordinate diagram of an embodiment of the valve control method of the present application.
  • the abscissa in Fig. 3 represents time, and the ordinate represents voltage intensity.
  • the present application provides a control method for a valve. Specifically, it includes: when the valve is opened, an actuator (in this embodiment, the actuator is the actuator 2) receiving a first voltage, ; When the valve is opened in place, the actuator receives a second voltage; and wherein the second voltage is lower than the first voltage.
  • Valve opening means that the valve starts to act according to a control command to make the spool move from the initial position to the target position.
  • the movement of the valve core usually results in a change in the flow rate and flow direction of the fluid inside the valve.
  • opening the valve can cause the valve core to move from the initial position in the horizontally to the left or horizontally to the right direction in FIG. 1.
  • valve open in place means that the spool has moved to the target position and the position of the spool no longer changes significantly. Therefore, the flow rate and flow direction of the fluid inside the valve will also be approximately stable, and no significant changes will occur.
  • the first voltage or the second voltage received by the actuator refers to the voltage used to drive the actuator, and the actuator will generate an actuation force under the action of the first voltage or the second voltage.
  • the first voltage and the second voltage may be provided by a power source not shown, and the power source may be controlled by a controller not shown to selectively output the first voltage or the second voltage for the actuator to receive.
  • the first voltage can be provided in the form of a square wave.
  • the first voltage can last for the first predetermined time t0 and has a higher voltage than the constant voltage U B of the related art.
  • the first voltage will last for a first predetermined time t0, and the first predetermined time t0 may be within 5 seconds, for example, may be between 1 second and 5 seconds.
  • Those skilled in the art can set the length of the first predetermined time according to actual needs.
  • the second voltage may be a constant voltage or a voltage provided by a square wave with a predetermined duty cycle.
  • the second voltage is a square wave with an interval provided by a duty ratio between 0.1 and 0.75.
  • each square wave voltage may have a time length of t1, and each zero voltage may have a time length of t2.
  • the second voltage is a voltage approximately equal to the constant voltage U B of the prior art.
  • the second voltage can also be set higher or lower than the constant voltage U B in the prior art.
  • the second voltage and the first voltage may also be provided in the form of other types of waves, including but not limited to sine waves, attenuated sine waves, sawtooth waves, pulse waves, triangle waves, rectangular waves, and the like.
  • the magnitude of the first voltage is selected so that the output of the actuator can overcome the first fluid resistance and spring force generated when the valve is activated.
  • the magnitude of the second voltage is selected so that the output of the actuator can overcome the second fluid resistance and spring force generated during the operation of the valve.
  • the second fluid resistance is generally less than the first fluid resistance.
  • Fig. 3 also shows the release signal R2 in the form of a dashed line.
  • the supply of the first voltage starts according to the appearance of the release signal R2, and the supply of the second voltage ends according to the disappearance of the release signal R2.
  • the release signal R2 is shown as a single square wave.
  • the release signal R2 can also be configured to be provided in the form of other types of waves, including but not limited to sine waves, attenuated sine waves, sawtooth waves, pulse waves, triangle waves, rectangular waves, etc.
  • the voltage of the release signal R2 can also be configured according to actual needs, and can be higher, lower or equal to the constant voltage U B.
  • the application also provides a valve which is operated by the above-mentioned control method.
  • the first voltage applied to the actuator will provide a relatively larger actuation force, thereby helping to overcome various resistances to start the movement of the valve core 3.
  • the second voltage (or square wave as shown in the figure) applied to the actuator will ensure that there is sufficient actuation force to hold the spool 3 in place on the one hand, and on the other hand On the one hand, the actuation force will not be significantly greater than the various resistances that need to be overcome, thereby effectively saving electrical energy.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

L'invention concerne un procédé de commande d'une soupape et une soupape. Le procédé de commande comprend les étapes suivantes : lorsqu'une soupape est ouverte, un actionneur (2) reçoit une première tension ; et lorsque la vanne est ouverte à une position spécifique, l'actionneur (2) reçoit une seconde tension, la seconde tension étant inférieure à la première tension. Le procédé de commande d'une soupape et la soupape présentent les avantages d'une structure simple, d'une fabrication aisée et d'une installation pratique, et peuvent augmenter la vitesse d'inversion et réduire la consommation d'énergie opérationnelle de la soupape tout en garantissant la fiabilité de fonctionnement de la soupape.
PCT/CN2020/077165 2020-02-28 2020-02-28 Procédé de commande pour soupape et soupape WO2021168785A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202080097637.0A CN115103974A (zh) 2020-02-28 2020-02-28 用于阀的控制方法和阀
PCT/CN2020/077165 WO2021168785A1 (fr) 2020-02-28 2020-02-28 Procédé de commande pour soupape et soupape

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/077165 WO2021168785A1 (fr) 2020-02-28 2020-02-28 Procédé de commande pour soupape et soupape

Publications (1)

Publication Number Publication Date
WO2021168785A1 true WO2021168785A1 (fr) 2021-09-02

Family

ID=77490588

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/077165 WO2021168785A1 (fr) 2020-02-28 2020-02-28 Procédé de commande pour soupape et soupape

Country Status (2)

Country Link
CN (1) CN115103974A (fr)
WO (1) WO2021168785A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1840788A (zh) * 2005-04-01 2006-10-04 Smc株式会社 电磁操纵阀和电磁操纵阀驱动电路
CN102261506A (zh) * 2010-05-21 2011-11-30 株式会社佐竹 压电式阀及利用该压电式阀的光学式粒状物分选机
CN103069138A (zh) * 2010-08-31 2013-04-24 日立汽车系统株式会社 燃料喷射装置的驱动装置
CN109027383A (zh) * 2017-06-09 2018-12-18 安德烈·斯蒂尔股份两合公司 用于操控电磁阀的方法
EP3502486A1 (fr) * 2017-12-22 2019-06-26 Hamilton Sundstrand Corporation Servovanne
CN110234918A (zh) * 2016-11-11 2019-09-13 R.P.E.有限责任公司 电磁阀的控制组件、电磁阀组件和相关方法

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1840788A (zh) * 2005-04-01 2006-10-04 Smc株式会社 电磁操纵阀和电磁操纵阀驱动电路
CN102261506A (zh) * 2010-05-21 2011-11-30 株式会社佐竹 压电式阀及利用该压电式阀的光学式粒状物分选机
CN103069138A (zh) * 2010-08-31 2013-04-24 日立汽车系统株式会社 燃料喷射装置的驱动装置
CN110234918A (zh) * 2016-11-11 2019-09-13 R.P.E.有限责任公司 电磁阀的控制组件、电磁阀组件和相关方法
CN109027383A (zh) * 2017-06-09 2018-12-18 安德烈·斯蒂尔股份两合公司 用于操控电磁阀的方法
EP3502486A1 (fr) * 2017-12-22 2019-06-26 Hamilton Sundstrand Corporation Servovanne

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