A quick connection switching device for pressure transmitter calibration

Abstract

The invention discloses a quick connection switching device for pressure transmitter calibration, which comprises a sealing connection base, a multi-way switching gas core and an end driving mechanism. The sealing connection base includes a tube body and a through tube The seat body of the body, the interior of the tube body is hollow, the seat body is connected and fixed with the pressure transmitter, and the air source channel connected with the air inlet of the pressure transmitter is opened on the seat body; the multi-way switching gas core Installed in the pipe body, the multi-channel switching gas core is a variable-diameter pipe section structure, including a small-diameter pipe section and a large-diameter pipe section separated by a partition ring. The outer wall of the small-diameter pipe section and the inner wall of the sealed connection base pipe body constitute the production gas cavity; the large-diameter pipe section is provided with a calibration air chamber connected to the calibration gas path, and the calibration air chamber is provided with a radial air outlet; the end driving mechanism is connected to the outer end of the large-diameter pipe section. The beneficial effects of the present invention are: the present invention realizes quick connection and switching between the production gas circuit and the calibration gas circuit, and can quickly complete the calibration work of the pressure transmitter.

Description

technical field [0001] The invention relates to the technical field of calibration of pressure transmitters, in particular to a quick connection switching device for calibration of pressure transmitters. Background technique [0002] The pressure transmitter is the core component of the medium pressure measurement used in the production site. The accuracy, stability and reliability of the pressure signal in the process of use will directly affect the control performance of the pressure control system. Pressure transmitters that are newly added or have reached the calibration period must pass the calibration before they can be used. At present, the calibration methods of pressure transmitters are mainly offline calibration after dismantling or on-site online calibration after production shutdown. [0003] The quick connection switching device for pressure transmitter calibration in the pressure transmitter calibration platform can realize rapid switching of the calibration g...

AI Technical Summary

Problems solved by technology

This method can no longer meet the needs of the on-site production process, and cannot complete the calibration work of the pressure transmitter in the short production gap time, and cannot realize the quick connection of the pressure calibration gas circuit; when the pressure transmitter is under tight production rhythm Under certain circumstances, the calibration work cannot be completed, and the accuracy of the pressure control system cannot be guaranteed, which will affect the product quality in the process of production and cause economic losses.

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