Intelligent PST testing device based on offshore platform valve positioner

Abstract

The invention discloses an intelligent PST testing device based on an offshore platform valve positioner. The intelligent PST testing device comprises an execution cylinder, a magnetic block is fixedly arranged at the end part of a cylinder rotating shaft, extending out of the upper end surface, of the execution cylinder, a three-dimensional fixed bracket is fixedly arranged on the upper end surface of the execution cylinder, and a gas circuit control panel is arranged on the side surface of the execution cylinder; the positioner and a limiting switch are fixedly arranged on the upper end face of the fixed bracket, and the positioner is used for conducting signal transmission with a central control system; and a switch rotating shaft extending out of the bottom end of the limiting switch is rotationally connected with a connecting rod structure, and the connecting rod structure is rotationally connected with the magnetic block. The invention aims to provide the intelligent PST testing device for the offshore platform valve positioner, and the intelligent PST testing device can monitor in real time to avoid adhesion and jamming of a SDV valve and improve the testing effectiveness and safety at the same time.

Description

technical field [0001] The invention relates to the technical field of valve detection, in particular to an intelligent PST test device based on an offshore platform valve positioner. Background technique [0002] As an industry with high risk in the working environment, the petroleum industry is prone to safety accidents due to its industry characteristics. The actuator of the SDV valve drives the switch of the valve through the force of the internal spring and the cylinder. When the cylinder pressure is lower than the spring pressure, the valve will be closed under the action of the spring force. When the cylinder pressure is greater than the spring pressure, the valve will be in the cylinder Open under pressure. Because the SDV valves on traditional offshore platforms are in a static state during use, they only act when there is an abnormality in the process and the pipeline needs to be cut off urgently or when the production is shut down for maintenance. The valve remai...

AI Technical Summary

Problems solved by technology

Since the traditional SDV valves on offshore platforms are in a static state during use, they only act when there is an abnormality in the process and the pipeline needs to be cut off urgently or when the production is shut down for maintenance. The valve remains static for a long time. Such operating conditions will cause Valves may stick and get stuck, seriously affecting the production efficiency of the petroleum industry

In addition, the current effectiveness test of the valve can only be tested manually, which has potential safety hazards

The opening and closing of the SDV valve is manually operated, and the opening cannot be precisely controlled

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