Safe intelligent valve positioner capable of realizing signal feedback

Abstract

The invention discloses a safe intelligent valve positioner capable of realizing signal feedback. The safe intelligent valve positioner is mounted on a pneumatic actuation mechanism and is composed of a main control panel as well as an LKS adapter, an I / P module and a position sensor which are connected with the main control panel; the LKS adapter is connected with a computer in a control room; a safety switch is arranged between the I / P module and the main control panel and is used for diagnosing whether a current in a circuit exceeds a load or not, and the output end of the I / P module is connected with the pneumatic actuation mechanism and is used for controlling the pneumatic actuation mechanism; and the position sensor comprises a switch position feedback module, the input end of the switch position feedback module is connected with the I / P module, and the output end of the switch position feedback module is connected with the main control panel. In the way, the remote operation for an outdoor valve can be realized indoors, the outdoor valve can be automatically diagnosed in real time, and the state of the outdoor valve is fed back to the computer by a signal, so that the safe intelligent valve positioner is safe, convenient and rapid to operate.

Description

technical field [0001] The invention relates to an intelligent instrument, in particular to a safe intelligent valve positioner capable of feeding back signals. Background technique [0002] The valve positioner is divided into pneumatic valve positioner, electric valve positioner and intelligent valve positioner according to the structure. It is the main accessory of the control valve and is usually used in conjunction with the pneumatic control valve. The signal is used to control the pneumatic control valve. When the control valve operates, the displacement of the valve stem is fed back to the valve positioner through the mechanical device, and the valve position status is transmitted to the upper system through the electrical signal. [0003] In the current market, intelligent valve positioners are the most widely used due to their high degree of automation, while traditional intelligent valve positioning can only unilaterally transmit signals to valves from the control ...

AI Technical Summary

Problems solved by technology

[0003] In the current market, intelligent valve positioners are the most widely used due to their high degree of automation, while traditional intelligent valve positioning can only unilaterally transmit signals to valves from the control room to perform opening and closing. / Close operation, but the status of the valve after the operation cannot be fed back to the control room, which also leads to the need for staff to regularly go to the outdoor valves to conduct surveys. At the same time, it is impossible to know the abnormal information of the valve in time. Manpower consumption

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