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Electric control circuit and electric control method for electrically operated valve

An electrical control, electric valve technology, applied in valve details, valve devices, engine components, etc., can solve problems such as unstable use of electric valves

Active Publication Date: 2012-07-18
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention overcomes the deficiencies of the prior art, provides an electric control circuit and a control method specially aimed at electric valves used in radioactive environments, and solves the technology of unstable use of electric valves in radioactive environments existing in the prior art question

Method used

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  • Electric control circuit and electric control method for electrically operated valve
  • Electric control circuit and electric control method for electrically operated valve

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Effect test

Embodiment Construction

[0059] The present invention will be further elaborated below in conjunction with the accompanying drawings.

[0060] An electrical control circuit for an electric valve, comprising:

[0061] Control the fuse FU to realize control short-circuit protection;

[0062] The main switch button SB1 realizes the stop rotation operation of the valve;

[0063] The valve opening switch button SB2 realizes the valve opening operation of the valve;

[0064] The valve closing switch button SB3 realizes the closing action of the valve;

[0065] A contactor KMO, which executes the opening of the valve;

[0066] A contactor KMC, which executes the closing of the valve;

[0067] A set of the first intermediate relay KA1 and the travel switch SLO, implement the reverse power transmission of the main circuit, the disconnection of the contactor KMO and the signal maintenance;

[0068] A set of third intermediate relay KA3 and torque switch STO, implement the reverse power transmission of the ...

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PUM

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Abstract

The invention discloses an electric control circuit and electric control method for an electrically operated valve. The electric control circuit comprises a valve opening travel mixed reverse power transmission circuit, a valve opening torque mixed reverse power transmission circuit, a valve closing travel mixed reverse power transmission circuit and a valve closing torque mixed reverse power transmission circuit, wherein the valve opening torque mixed reverse power transmission circuit is the is a standby circuit of the valve opening travel mixed reverse power transmission circuit and the valve closing torque mixed reverse power transmission circuit is a standby circuit of the valve closing travel mixed reverse power transmission circuit. Through adoption of the electric control circuit and the electric control method, the operation reliability of the electrically operated valve is increased greatly and the maintenance cost and frequency of the electrically operated valve used in a radioactive environment can be reduced.

Description

technical field [0001] The invention relates to electric valve control, in particular to an electric control circuit and a control method for an electric valve. [0002] Background technique [0003] The current technology in the field of electric valve control is that the electrical main circuit and the secondary control circuit are mutually independent circuits, and the operation of the electric valve and the disconnection of the contactor are realized through the travel switch of the secondary circuit. However, in the transformation of the reactor ventilation system, the electric valve used in the radioactive environment cannot be compatible with conventional control and PLC control, and it is prone to unreliable operation of the electric valve. [0004] Contents of the invention [0005] The present invention overcomes the deficiencies of the prior art, provides an electric control circuit and a control method specially aimed at electric valves used in radioactive en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/02
Inventor 龚应伟黄文涛陈先林杨兰菊代筠张永康刘宇昊
Owner NUCLEAR POWER INSTITUTE OF CHINA
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