Device for valve micro-step adjustment by using AC asynchronous motor and realization method thereof
An AC asynchronous motor and micro-step adjustment technology, which is applied in the direction of valve operation/release device, valve device, valve details, etc., can solve the problems of inconvenient installation, debugging, backward development of electric valves, poor use effect, etc., to achieve Simple structure, strong anti-pollution ability, fast response effect
Active Publication Date: 2011-08-10
HEBEI UNIV OF TECH
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Problems solved by technology
[0003] The development of my country's electric valve industry is relatively backward. At present, the domestic research and development and production of electric valve products are not effective in terms of high precision and high reliability.
The mechanical structure is too complicated, it is not easy to install, debug, and not easy to maintain
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[0034] specific implementation plan
[0035] Such as figure 2 As shown, the electric valve device for micro-step adjustment based on an AC asynchronous motor provided by the present invention mainly includes: an AC asynchronous motor 1 , a controller 2 , a reducer 3 , a valve 4 , and a flange 5 .
[0036] The AC asynchronous motor 1 is connected to the reducer 2 through the flange 5, and the reducer 2 is connected to the valve 4 through the flange 5; the electric valve controller 2 is composed of a DSP control part and a driving power amplification part; the electric valve controller 2 is connected to the reducer 3, At the same time, the electric valve controller 2 is connected to the AC asynchronous motor 1 .
[0037] The controller is composed of DSP control part and driving power amplification part. The structure of the control system is as image 3 shown.
[0038] The drive power amplification part includes a drive circuit, a signal isolation drive circuit, a voltage ...
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The invention relates to a device for valve micro-step adjustment by using an AC asynchronous motor and a realization method thereof. The device comprises the AC asynchronous motor, an electrically operated valve controller, a speed reducer and a valve, wherein a shaft of the AC asynchronous motor is connected with the speed reducer through a flange; the speed reducer is connected with the valve through the flange; and the electrically operated valve controller consists of a controller DSP control part and a driving power amplifying part and is connected with the speed reducer and the AC asynchronous motor at the same time. Compared with the prior art, the device of the invention adopts the AC asynchronous motor as a power source motor, takes a rotor current of the motor as a direct control target, uses a fully digital controller to realize the precise positioning precision of an electric valve actuating device, guarantees the rapidity of a response, eliminates a complex mechanical transmission device because of a micro-step action characteristic of the motor, can realize the fine adjustment and positioning of the valve by directly substituting the multi-grade complex transmissionsystem with simple and easy reducing transmission through the output of the motor shaft, and has the advantages of simple structure, quick response, strong contamination resistance and high reliability.
Description
Technical field: [0001] The invention relates to a device for micro-step adjustment of a valve by using an AC asynchronous motor and a realization method thereof. technical background: [0002] With the development of the economy and the advancement of industrial automation, electric valves have become an important part of the process automation chain. Their energy access is more convenient than other driving methods, and they are widely used in electric power, metallurgy, petroleum, mining and other industrial sectors. In industrial occasions, electric valves must have higher reliability and safety, and the comprehensive performance of electric valves mainly depends on the reliability and safety of electric actuators. It determines the technical level of the electric valve machine. In order to maximize the performance of electric valves, in the design process, not only the parameters of the selected valves should be paid attention to, but also the specific requirements of ...
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IPC IPC(8): F16K31/04
Inventor 孙鹤旭董砚李洁雷兆明郑易
Owner HEBEI UNIV OF TECH