JPS63106535A - Method for evaluating performance of sprayer - Google Patents

Abstract

PURPOSE:To rapidly and simply evaluate performance, by measuring the flight distance of a spray stream when the spray stream injected in a wind tunnel is pushed back by the air stream impinged against said spray stream from the front surface thereof. CONSTITUTION:Water 2 is sent to a sprayer 1 by a pump 3 and the return water thereof is returned to a small tank. The flight orbit 4 of the water droplet discharged from the sprayer 1 is pushed back by the air stream 9 passing through a current plate 5 in a wind tunnel 8. When water is sprayed under a definite condition under the adjustment of flowmeters F1, F2 and pressure gauges P1, P2, the piercing distance of the water droplet into the air stream changes corresponding to a particle size. That is, the flight distance L of the water droplet is short in the normal sprayer and, when the sprayer becomes obsolete, the particle size of the water droplet becomes large and the distance L also becomes long and, therefore, performance can be rapidly and simply evaluated on the spot.

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a method for evaluating the performance of a water sprayer applied to a gas cooling chamber of a garbage incinerator.

There are also 4 sprayers that can spray oil and other fluids outside the water.

"Prior Art" An overview of the conventional performance evaluation method of water sprayers is shown in FIGS. 2 and 3.
The sprayed water droplets 03 are captured on the oil 05 that has been placed in the guest 2S04 in advance, and a photograph is taken of it in the photograph [06], and the size of the water droplets 03 is examined from the photograph, They were determining whether the condition was good or bad.

``Problems to be solved by the invention'' According to the conventional technology, it takes a lot of time and effort to measure the size of the spray particles, and it is difficult to quickly and easily perform the job at the site where the sprayer is used. It was difficult to evaluate.

A method using a laser or the like may also be considered, but the cost of the device itself is high and is problematic.

In particular, a method for easily determining whether or not an aging nozzle can be used has been desired.

"Means for Solving the Problems" The present invention solves the above-mentioned problems of the conventional art. This is a sprayer performance evaluation method in which the performance of the sprayer is evaluated by measuring the longest scattering distance.

``Effect'' Droplets have a small particle size, and the slower the speed, the easier it is to change their trajectory due to the influence of airflow.As the atomizer ages, its spray characteristics deteriorate, so the droplet size becomes thicker (it becomes constant at that point). When spraying into an air stream at a certain flow rate under certain conditions (pump discharge flow rate, return flow rate, discharge pressure, return pressure, etc.), the penetration distance into the air stream changes depending on the particle size.In other words, with a normal atomizer, The scattering distance is small, but becomes larger as it ages.

"Example" An embodiment of the present invention is shown in FIG.

1 is a sprayer, 2 is water, 3 is a pump that sends water 2 to sprayer L, 4 is a track of droplets released from sprayer 1, 5 is a rectifier plate, 6 is air, 7 is air 6 to rectifier plate 5 A sending blower, 8 is a wind barrel attached to the rectifier plate 5, 9 is an air flow blown out from the rectifier plate 5, and L is the scattering distance of the track 2 emitted from the sprayer 1.

P+, Fz are flow meters for water 2, P+, Pt are pressure gauges, subscript 1 is a pump discharge line, and 2 is a return line.

The water droplets discharged from the sprayer 1 first travel in the axial direction, as shown by the trajectory 4, but are exposed to the airflow 9 and pushed back at the scattering distance.

Here, the spraying performed by sending the water 2 to the sprayer 1 with the pump 3 is performed by flowmeters F', , F, , pressure gauges P, ,
In order to obtain uniform air [9], air 6 is sent from a blower 7 to the wind cylinder 8.

"Effects of the Invention" Since the present invention uses the method described above, it is possible to judge the quality of the sprayer without directly measuring the particle size, so it is possible to quickly and conveniently evaluate the performance of the sprayer at the site where the sprayer is used. becomes.

In particular, it is possible to judge whether the nozzle is good or bad simply by comparing the scattering distance of an old nozzle with that of a new one. It has the following effects.

[Brief explanation of the drawing]

Figure 1 is a conceptual diagram of one embodiment of the present invention, Figures 2 and 3 are
The figure is an explanatory diagram of a conventional method. 1: Sprayer 2: Water 3: Pump 4: Track 5: Straightening plate 6: Air 7: Blower 8: Wind barrel 9: Air flow Figure 2

Claims (1)

[Claims] 1. A sprayer characterized in that the performance of the sprayer is evaluated by applying an air stream to the spray stream from the front and measuring the longest scattering distance between the position where droplets are pushed back and the tip of the sprayer. Performance evaluation method.