On-line detection system for electrodynamic safety valve

Abstract

The invention belongs to the technical field of safety valve performance detection, and particularly relates to an on-line detection system for an electrodynamic safety valve. The on-line detection system comprises four parts, namely a mechanical clamp, an electric lifting mechanism, a motor driving control unit and a data collection and analysis unit, wherein the mechanical clamp is used for being connected with the safety valve and supporting the electric lifting mechanism; a direct-current motor is used for driving a screw rod to rotate through a speed reducer; the lifting of the safety valve is realized through a screw nut, so that the safety valve is opened. A data collection and analysis system is used for measuring tension and sound change in the opening process, displaying and storing data in real time, automatically judging whether the safety valve is opened or not by software according to a signal of a sound sensor, recording the opening tension value, and calculating the opening pressure of the safety valve. According to the on-line detection system, through an alternating-current and direct-current adapter, a direct-current power supply is adopted for supplying electricity; and a rechargeable battery is arranged, and the on-line detection system can be applied to different working condition environments in which mains supply cannot be provided. The system has the characteristics of being compact in structure, light in weight and convenient to mount.

Description

technical field [0001] The invention belongs to the technical field of safety valve performance detection, and in particular relates to an electric safety valve online detection system. Background technique [0002] The safety valve is an important safety accessory of pressure-bearing equipment such as boilers, pipelines, and pressure vessels. Its function is to prevent overpressure damage to equipment and ensure the safe operation of the pressure system. During the operation of the safety valve, the set pressure and sealing performance will change due to the influence of pressure, temperature and corrosion. Therefore, national standards and various industry standards stipulate that the safety valve must be inspected at least once a year. [0003] Safety valve opening pressure detection currently has two methods: off-line detection and on-line detection. Off-line inspection requires dismantling the safety valve and sending it to a special inspection station for inspection w...

AI Technical Summary

Problems solved by technology

Most of the currently used online detection systems or instruments use hydraulic systems as the opening mechanism, which has the disadvantages of complex and heavy mechanical structures and low stroke control accuracy, and the product life and reliability are greatly reduced due to the aging and leakage of hydraulic parts.

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