Method for synchronously diagnosing plasma temperature field through adoption of standard temperature method and relative spectral line method

Abstract

The invention discloses a method for synchronously diagnosing a plasma temperature field through adoption of a standard temperature method and a relative spectral line method, and the method comprises the steps: enabling a to-be-detected arc plasma temperature field to be divided into an arc column region temperature part and an arc edge region temperature part; for the arc column region temperature part, finding the relationship between the gray value G of the arc plasma discharge image and the plasma emission coefficient epsilon v, and calculating by using a standard temperature method; and for the arc edge region temperature part, finding out the relationship between the gray value G and the radiation intensity I, and further solving the temperature distribution of the arc edge region by utilizing a relative spectral line method. The arc temperature is diagnosed synchronously through adoption of the standard temperature method and the relative spectral line method, the accuracy of the temperatures of the arc column region and the arc edge region is verified mutually, the accuracy of the whole arc temperature field diagnosis is improved, and the temperature diagnosis range is larger.

Description

technical field [0001] The invention belongs to the field of thermal plasma temperature diagnosis, and in particular relates to a method for synchronously diagnosing the plasma temperature field by a standard temperature method and a relative spectral line method. Background technique [0002] The commonly used temperature diagnosis of arc plasma is mainly divided into probe method and spectral diagnosis method. The experimental equipment used in the probe method is simple and easy to operate. However, due to the characteristics of high temperature, concentrated energy, and high radiation intensity of the plasma arc, the contact probe has a short service life and high consumption, and the contact probe interferes with the diagnosed plasma temperature field distribution, and the spatial resolution is low; in addition , the probe can basically only measure the temperature of a single point, and cannot obtain the temperature distribution of the entire temperature field. The sp...

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Problems solved by technology

[0006] Technical solution of the present invention: Aiming at the deficiencies of the existing technology, a method for synchronously diagnosing the plasma temperature field by the standard temperature method and the relative spectral line method is provided to solve the problem of inaccurate real-time diagnosis of the existing entire arc temperature field. The present invention A new diagnostic method is introduced, which enables the two sets of temperature diagnostic methods, the standard temperature method and the relative spectral line method, to be diagnosed simultaneously and mutually verified, and the temperature field distribution of the entire arc can be accurately obtained

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