Valve control system and method

A valve control and pressure valve technology, applied in the field of automation control, can solve problems such as pressure valve refusal to move, and achieve the effect of ensuring normal operation

CN112696525AActive Publication Date: 2021-04-23国能神福(石狮)发电有限公司 +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-04-23

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Abstract

The invention provides a valve control system and method, relates to the field of automatic control, and solves the problem that an existing pressure valve is prone to refuse to operate. The system comprises pressure detection devices, a first control device, a second control device and a pressure valve, wherein one pressure detection device is connected with the pressure valve through the first control device, and the other pressure detection device is connected with the pressure valve through the second control device. The valve control system and method are used for controlling the valve to be opened and closed.
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Description

technical field

[0001] The present application relates to the field of automatic control, in particular to a valve control system and control method. Background technique

[0002] The boiler is one of the key equipment of the thermal power plant system. Whether the boiler is in a safe and stable operating state is directly related to the normal operation of the thermal power plant. There are many factors that affect the operating state of the boiler, including the steam pressure, temperature, and air volume in the boiler. The safe and stable operation of the boiler can be ensured by controlling the steam pressure, temperature, and air volume in the boiler. Wherein, the steam pressure in the boiler is generally controlled by setting a pressure valve and controlling the opening and closing of the pressure valve.

[0003] However, in current systems for controlling steam pressure in boilers, the pressure valve is connected to only one control device, and if the control device ...

Examples

Embodiment Construction

[0037] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0038] As described in the background technology of this application, in the current system for controlling the steam pressure in the boiler, the pressure valve is only connected with one control device, that is, the opening and closing of the pressure valve is controlled through a control loop, if the control device or the If the line between the con...