Online calibration method of indicator diagram test equipment and connection structure thereof

Abstract

The invention discloses an online calibration method of indicator diagram test equipment and a connection structure thereof. In the invention, one standard indicator diagram test equipment is installed on an oil pumping unit tested by online indicator diagram test equipment which needs to be calibrated so that the standard indicator diagram test equipment and the online indicator diagram test equipment can simultaneously collect a load and displacement data of the oil pumping unit during normal working under a same test working condition. Therefore, a standard indicator diagram can be obtained through testing by using the standard indicator diagram test equipment and an online indicator diagram can be obtained through testing by using the online indicator diagram test equipment. A difference of two data can be obtained after comparing the data of the standard indicator diagram with the data of the online indicator diagram. According to the difference, the online indicator diagram test equipment can be calibrated. In the invention, investment is small, a working efficiency high, operation is convenient and calibration precision is high. An influence on the oil pumping unit is small. A labor intensity of operation personnel can be substantially reduced. The method and the connection structure have many other advantages.

Description

technical field [0001] The invention relates to an on-line calibration method and a connection structure of a power diagram testing device, and belongs to the technical field of calibration of power diagram testing equipment. Background technique [0002] The dynamometer test equipment is usually used for testing the surface dynamometer diagram of a single well of a pumping well. In the digital construction of oilfields, the dynamometer charts regularly collected by the dynamometer test equipment installed on the pumping unit for a long time are used to calculate the daily fluid production of a single well, and to analyze and diagnose the working conditions of the oil well. Since the load elastic body of the dynamometer test equipment will drift after being loaded for a long time, which will affect the calculation of the daily fluid production of the oil well and the analysis of the well condition, so the on-site dynamometer test equipment must be calibrated frequently. At ...

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Problems solved by technology

This method is the most direct and authoritative method at present, but as far as the calibration of thousands of dynamometer test equipment installed on site is concerned, this method has the disadvantages of large investment, inconvenient operation, long time consumption, and labor There are disadvantages such as large quantity, and there are also disadvantages such as unfavorable maintenance management and low work efficiency.

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