A detection device and detection method for a two-fluid nozzle

Abstract

The invention discloses a detection device and a detection method for a dual-fluid nozzle. The device comprises a cylindrical shell, the upper end of the shell is fixedly connected with a rectifying plate through a flange, and the lower end of the shell is fixedly connected with a circulating water tank through a flange. The hole on the upper side wall of the circulating water tank is connected to the induced draft fan through the gas flow meter to form an exhaust channel, and the hole on the lower side wall of the circulating water tank is connected to the inlet of the circulating water pump through the circulating water flow meter to form a circulating water channel. Water higher or lower than the internal temperature of the shell is sprayed from the two-fluid nozzle under the action of compressed air to heat or cool the inside of the shell. The thermocouple array arranged at the test point indirectly measures the temperature of the nozzle by detecting the change of the internal temperature. Atomization effect and spatial distribution of sprayed fluid. Compared with the traditional PIV detection method, the present invention has the advantages of simple structure, easy operation and low cost, and is of great significance to the online monitoring of the atomization effect of the two-fluid nozzle.

Description

technical field [0001] The invention relates to the technical field of nozzle atomization detection, in particular to a detection device and a detection method of a two-fluid nozzle. Background technique [0002] In the field of transportation such as ships and automobiles, the air pollution caused by NOx emission has attracted people's attention day by day. In order to reduce NOx emissions, post-treatment technology represented by Selective Catalytic Reduction (SCR) emerged as the times require, and has become the mainstream NOx emission reduction technology at present. [0003] The basic principle of SCR technology is to inject a reducing agent into the flue gas, usually NH 3 , selectively react with NOx to generate N 2 And water, so as to avoid NOx pollution to the atmosphere. Considering NH 3 It is inconvenient to store in ships and cars. In practice, urea aqueous solution is often used instead of NH 3 as a reducing agent. Therefore, whether the injected urea aqueo...

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to provide a detection device and detection method for a dual-fluid nozzle, which solves the problem that the existing detection device is precise and expensive, the data processing is complicated, and it is not suitable for the rapid identification of nozzle atomization effect in an industrial field environment.

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