Unlock instant, AI-driven research and patent intelligence for your innovation.

Electric Actuator

An electric actuator and power supply technology, applied in the direction of collectors, electric vehicles, electrical components, etc., can solve problems such as inability to set fully open or any position, increased power consumption, and inability to reset valves

Active Publication Date: 2020-01-17
YAMATAKE HONEYWELL CO LTD
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The spring return type actuator has the following problems: (I) In addition to the load torque for driving the valve, the torque for tightening the spring is required, so a motor that generates a large torque is required, resulting in increased power consumption; The target position is only the fully closed position, and cannot be set to fully open or any position; (III) Mechanisms such as clutches and brakes that are required to control the action during power failure
However, in the electric actuator disclosed in Patent Document 1, if the charging of the power storage unit during energization is insufficient, the energy for driving the motor will be insufficient, so that the valve cannot be reset until the power is turned off. The problem of the desired opening position

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electric Actuator
  • Electric Actuator
  • Electric Actuator

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment

[0027] Embodiments of the present invention will be described below with reference to the drawings. figure 1 It is a block diagram showing the configuration of the electric actuator according to the first embodiment of the present invention. The electric actuator 100 is installed on a valve 200 such as a ball valve and a butterfly valve, and is integrated in the form of an electric regulating valve. In addition, information is exchanged between the electric actuator 100 and a controller not shown.

[0028] The electric actuator 100 includes: a main power supply unit 1 that generates a main power supply voltage using a power supply voltage supplied from an external power supply not shown in the figure; a power storage unit 2 that is composed of an electric double layer capacitor that stores electric energy; a charging unit 3 It charges the power storage unit 2 when the power supply is supplied from the outside; the booster unit 4 boosts the voltage of the power storage unit 2;...

no. 2 Embodiment

[0078] Next, a second embodiment of the present invention will be described. Figure 7 It is a block diagram showing the structure of the electric actuator of the second embodiment of the present invention, and figure 1 The same components are marked with the same symbols. The electric actuator 100a of this embodiment includes a main power supply unit 1a, a power storage unit 2, a charging unit 3a, a booster unit 4, a power failure detection unit 5a, a main power supply switching unit 6, an opening degree target processing unit 7, a control unit 8, The control power supply unit 9, the motor 10, the motor drive unit 11, the speed reducer 12, the position sensor 13, the rectification unit 14 which rectifies the power supply voltage supplied from an external power supply not shown in the figure, and the direct current rectified by the rectification unit 14 Smoothing section 15 for voltage smoothing.

[0079] The first embodiment is an example corresponding to a case where the p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention makes the reset operation reliable when power failure occurs. The electric actuator (100) of the present invention has: a driving part (16), which drives the valve (200) according to a control signal; a power storage part (2), which stores electric energy; The power storage unit (2) charges; and the control unit (8) controls the entire actuator. The control unit (8) operates the valve (200) to a desired opening position using the energy stored in the power storage unit (2) during a power outage in which the power supply is cut off. In addition, the control unit (8) calculates the value of the energy (CP) stored in the power storage unit (2) based on the storage voltage of the power storage unit (2) when the power is turned on, and calculates the valve (200) from opening to The value of energy (CPref) required for the position indicated by the degree target value to move to the desired opening position, after the energy (CP) becomes (CPref) or more, the value of the opening degree target value and the value of the valve (200) The control signal is output in a consistent manner.

Description

technical field [0001] The present invention relates to an electric actuator that forcibly drives a motor with electric energy stored in a power storage unit during a power failure to reset a valve to a predetermined opening position. Background technique [0002] Conventionally, there is a spring return type actuator that uses a spring to forcibly move a valve in a fully closed direction when a power failure occurs. The spring return type actuator has the following problems: (I) In addition to the load torque for driving the valve, the torque for tightening the spring is required, so a motor that generates a large torque is required, resulting in increased power consumption; The target position is only fully closed, and cannot be set to fully open or any position; (III) Mechanisms such as clutches and brakes are required to control the action during power failure. [0003] As a method capable of solving these problems, an electric actuator ( Refer to Patent Document 1). ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/04H02J7/00
CPCF16K31/04F16K31/047H02J7/345H02J7/0069
Inventor 成田浩昭
Owner YAMATAKE HONEYWELL CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com