RU1815404C - Method and apparatus for cleaning sprayers of diesel nozzles - Google Patents

Abstract

Usage: engine building, in particular repair and maintenance of fuel equipment of diesel engines. SUMMARY OF THE INVENTION: the working fluid is supplied to the atomizer being cleaned by a multi-plunger pump in a closed cycle, with an injection frequency that is a multiple of the rotational speed of the pump shaft. As a working fluid, a fuel emulsion is used, the emulsifier of which is amines substituted with Cis-Ceo hydrocarbon radicals, partially neutralized with nitrobenzene acid. In this case, the particle size of the water in the emulsion does not exceed 5 microns. The end of the cleaning process is fixed by stabilizing the capacity of the atomizer. The emulsion is supplied alternately to one of the two nozzles fixed to the device, dismantling and replacing the other at this time. 2 sec and 1 z.p. f-ly, 1 ill.

Description

FIELD OF THE INVENTION The invention relates to methods for cleaning the nozzle channels of diesel nozzle atomizers from soot and can be used in the repair and maintenance of nozzles.

The aim of the invention is to expedite the cleaning of sprayers and to improve their quality.

The goal is achieved by the implementation of the hydromechanical cleaning process by feeding the working fluid to the sprayer being cleaned from a multi-plunger pump in a closed cycle, with an injection frequency that is a multiple of the rotation frequency of the pump shaft. In this case, a fuel-water emulsion, in which amines are an emulsifier, is used as a working fluid. Substituted by Cia-Ceo with hydrocarbon radicals, partially (15%) neutralized with nitrobenzoic

acid, and the end of the cleaning process is fixed by stabilizing the capacity of the atomizer by comparing with the minimum capacity of the new atomizers.

Compared to the prototype method, the cleaning process of the nebulizers is accelerated due to an increase in the rate of injection of the emulsion and the impact energy of the water particles due to injection without back pressure, maintaining the required dispersion of the emulsion by feeding it in a closed cycle and increasing the frequency of injection.

Improving the quality of spray cleaning compared to the prototype method is provided by maintaining the necessary dispersion of the emulsion, which provides repeated application of the pressure of the impact of iodine particles to the deposits;

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quality control of cleaning throughput of sprayers in comparison with the minimum throughput of new sprayers; the action of an emulsifier that intensifies the destruction of soot.

The choice of emulsifier is due to the combination of the properties of an emulsifier and a corrosion inhibitor.

A method for cleaning atomizers of nozzles is carried out as follows. The fuel with the emulsifier dissolved in it and water are mixed in the form of an emulsion on a device containing a tank, a multi-plunger pump, nozzles. Then, the finished emulsion with a water content of 20-30% and an emulsifier of 0.8-1.6% is fed to the nozzle being cleaned with an injection frequency that is a multiple of the rotational speed of the pump shaft. The emulsion is pumped through a cleanable atomizer in a closed cycle. During the cleaning process, a change in the nozzle throughput is monitored and the Cleaning is turned at the moment when the throughput is stabilized.

Devices for cleaning nozzle nozzles are known, comprising a tank for cleaning liquid, a filter, a pump forcing liquid to a cleaning atomizer.

However, these devices do not provide a high intensity hydromechanical cleaning process and its quality. control is carried out by indirect parameters.

The aim of the invention is to speed up cleaning and improve its quality.

This goal is achieved by the fact that the device is equipped with two alternately cleaned nozzles 8 connected through a two-way valve 7 to a discharge manifold 6 provided with check valves 5. in communication with sections of the multi-plunger pump 1, while the nozzles are installed in the chambers of the drain manifold 9, made in the form of communicating vessels connected to a volumetric flask 10 equipped with a tube of maximum level 11, the outlet of the drain manifold through a valve 12 and a nozzle 13 is in communication with the emulsion tank 4.

The device operates as follows.

Fasten the nozzle 8 to be cleaned with a quick clamp. Turn off the valve 12 and turn on the pump drive 1, directing the two-way valve 2 of the fuel-fuel emulsion through the installed nozzle. In this case, the emulsion through the filters 2, 3 and the pump discharge sections is fed through the check valves 5 to the discharge manifold 6, from where the emulsions with a frequency of injection of a multiple of the rotational speed of the pump shaft enters the drain manifold 9. The emulsion fills the drain manifold 9 and volumetric flask 10 to the level specified by the maximum level tube

11. After that, open the valve 12 and the emulsion through the valve 12 and the nozzle 13 enters the tank 4 in a closed cycle. During cleaning, the level of the emulsion in the volumetric flask 10 will decrease, because the coked nozzle nozzle 8 has a throughput 5 less than the nozzle 13, with a throughput corresponding to the nozzle with a new nozzle with a minimum throughput.

At the end of purification, the emulsion level in

The 0 volumetric flask 10 stops decreasing and stabilizes if the nebulizer being cleaned has a minimum throughput. If the nebulizer being cleaned had a throughput greater than minimal, then at the end of the cleaning process the level of emulsion will begin to increase. After the cleaning of the first nozzle is completed, the valve 7 is switched on to clean the second nozzle (it is installed during

0 cleaning the first nozzle). At the same time, the valve 12 is closed to restore the level of the emulsion in the volumetric flask 10 to the initial level, after which the valve is opened

12. The cleaning cycle is repeated. 5

FORMULA AND SECTION

Claims (3)

1. A method of cleaning spray nozzles of diesel nozzles by supplying a working fluid to the spray gun from a multi-plunger pump, characterized in that, in order to accelerate cleaning and improve its quality by implementing a hydromechanical cleaning process, the working fluid is supplied to the spray gun to be cleaned in a closed cycle with an injection frequency that is a multiple of the rotation frequency of the pump shaft, the end of the cleaning process is fixed by stabilizing the capacity of the atomizer by comparing 0 with a minimum throughput of new sprayers. 2. A method according to claim 1, characterized in that a fuel-water emulsion is used as the working fluid, 5 the emulsifier of which are amines substituted with Cis-Ceo hydrocarbon radicals, partially neutralized with nitrobenzoic acid. 3. A device for cleaning spray nozzles of a diesel engine, comprising a tank for a working fluid with a discharge pipe, cleaned nozzles, a sectional plunger pump connected through a suction line to a pipe for drainage, characterized in that, in order to accelerate cleaning and improve its quality, the device equipped with a drain manifold with an outlet and two chambers made in the form of communicating vessels, a volumetric flask made with a tube of maximum level and communicated by fc ка0 by means of a discharge manifold connected, on the one hand, through check valves with sections of the plunger pump, and, on the other hand, through a two-way valve with two cleanable nozzles, each of which is installed in the chamber, the outlet of the drain manifold through the valve and nozzle in communication with the tank and the nozzle is configured to have a throughput equal to the minimum throughput of the cleaned nozzle.