Non-disturbance switching control loop and control method of single solenoid valve

A technology of control loop and non-disruptive switching, which is applied in the direction of valve details, valve devices, valve operation/release devices, etc., and can solve problems such as unexpected jumps of controlled objects, poor control equipment and process flow, etc.

Active Publication Date: 2017-05-17
CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In many projects, the design and supplier did not pay attention to this point. When the single solenoid valve is switched during operation, it often causes unexpected jumps of the controlled object, which will cause adverse consequences to the control equipment and process flow.

Method used

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  • Non-disturbance switching control loop and control method of single solenoid valve
  • Non-disturbance switching control loop and control method of single solenoid valve

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Embodiment Construction

[0023] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention, but are only examples; at the same time, the advantages of the present invention will become clearer and easier to understand through description.

[0024] Such as figure 2As shown: the non-disturbance switching control circuit of the single solenoid valve of the present invention, which includes an external stable voltage 1 and grounding GND2, and is characterized in that the switch button SK3 and the first relay SR4 are connected in series to form a line I, the second relay SR16 and the sixth Relay HR17 is connected in parallel to form line X, said line X and remote control signal 5 are connected in series to form line II, local switch button K10 and seventh relay HR211 are connected in parallel to form line XI, said line XI is formed in series with fourth relay SR312 Line III, t...

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PUM

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Abstract

The invention relates to an unperturbed switchover control circuit and a control method of a single electric control electromagnetic valve. The circuit comprises external stable voltage (1) and ground GND (2). A switch button SK (3) is connected in series with a first relay SR (4) to form a line I; a second relay SR1 (6) is connected in parallel with a sixth relay HR1 (7) to form a line X; the line X is connected in series with a remote control signal (5) to form a line II; a local switch button K (10) is connected in parallel with a seventh relay HR2 (11) to form a line XI; the line XI is connected in series with a fourth relay SR3 (12) to form a line III; a reset switch button G (8) is connected in parallel with a third relay SR2 (13) to form a line IV; and the circuit can achieve unperturbed switchover from remote control to local control. When the local control is switched over to the remote control, a remote control system tracks a field state, thereby achieving the advantage of the unperturbed switchover among three control modes.

Description

technical field [0001] The present invention relates to the field of the composition of local control system and remote computer control system, more specifically, the non-disturbance switching control loop of single solenoid valve, and also relates to the control method using this control loop. Background technique [0002] Conventional industrial control systems are composed of local control systems and remote computer control systems. The local control system (on the local control cabinet) can select local and remote control modes. When one of the control modes is selected, the other control mode loses control of the device. Similarly, in the software design of the remote computer control system, it is also necessary to set a remote automatic and manual switch. After one control mode is selected, the other will be invalid. (Such as figure 1 shown); in normal operation, the remote automatic control mode is used, local control and manual control are only necessary supple...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K31/06
CPCF16K31/0675
Inventor 陈锐胡绪登刘树洲曹一夫张勇
Owner CENT SOUTHERN CHINA ELECTRIC POWER DESIGN INST CHINA POWER ENG CONSULTING GROUP CORP
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