Novel engineering production pressure calibrator

Abstract

The invention discloses a novel pressure calibrator for engineering production, which includes an oil pipe, a piston cavity and a stepping motor. The oil pipe is connected with a measuring tube, and a pressure valve is arranged under the measuring tube, and one of the measuring tubes is connected with a pressure gauge to be calibrated. , the measuring tube on the left side of the pressure gauge to be calibrated is provided with an oil cup, and the measuring tube on the left side of the oil cup is provided with a piezoelectric sensor. The motor is connected with the coupling through the gear transmission mechanism, the coupling is connected with the lead screw, the right side of the stepping motor is connected with the manual crank, and the sliding guide rail is set under the stepping motor, and the pressurized piston is connected with the lead screw. This device is equipped with a precision pressure gauge on the oil pipe to realize the comparison between the calibration instrument and the instrument to be calibrated. The calibration accuracy is high, and the standard pressure can be generated by electric and manual methods. It is flexible, light, and has high work efficiency. Cost saving, safe and reliable.

Description

technical field [0001] The invention relates to the technical field of instruments and meters, in particular to a novel engineering production pressure calibrator. Background technique [0002] Pressure measuring instruments are indispensable measuring equipment in the industrial production process, and are widely used in various production processes. In order to ensure the accuracy and reliability of pressure measuring instruments, regular calibration of pressure measuring instruments is necessary. The calibration cycle is determined according to the conditions of use, and it must be calibrated by a qualified unit of measurement at least once a year. Calibration is divided into two ways: sending to the metrology department for verification and on-site verification, and the demand for on-site verification is increasing day by day. This is because the current oilfield production in our country uses a large number of pressure instruments, the use environment is harsh, and th...

AI Technical Summary

Problems solved by technology

This is because the current oilfield production in our country uses a large number of pressure instruments, the use environment is harsh, and the calibration cycle is short, so the workload of inspection is quite large; Difficult, sometimes not allowed in production, so it is often difficult to carry out regular calibration of pressure instruments used as required

If the calibration is not performed, or if the calibration cycle interval is very long, there will be safety hazards; if the calibration is performed according to the specified cycle, it may affect the normal operation of the oil field and bring huge losses to the enterprise. Therefore, it is urgent to solve the problem of pressure measurement instruments. On-site verification problem

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