SU643205A1 - Full-spray jet nozzle - Google Patents

Description

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The invention relates to a spreading device for distributing process liquids in the reaction volumes of heat and oil exchange apparatus, which are among the main types of equipment for coke-chemical, chemical, petrochemical and related industries.

Known all-flake nozzles include a housing with a chamber, a swirl and an openings 1.

The disadvantage of these nozzles is the poor quality of the spray pattern.

There is also a known co-flare nozzle comprising a housing with a swirl chamber and a nozzle and a swirler located in the chamber with tangential channels having input and output ends 2.

Such a nozzle is closest to the technical essence of the invention and the result achieved.

Its disadvantage is the low reliability of operation when dispensing process fluids containing various inclusions that are prone to deposition, especially if the performance of one nozzle is less than 15. This disadvantage is explained by the increased clogability of the axial channel of the vortex, the area of which is the smallest of the nozzle cross sections (2-4 times smaller than the inclined channel or nozzle), which leads to the formation of a hollow fluid plume. Violation of the distribution of fluid in the plume leads to a sharp decrease in the coefficients of heat and mass concentration in chemical apparatus.

The goal of the invention is to ensure the possibility of obtaining a uniformly filled torch and improving the reliability of the nozzle.

This is achieved by the fact that the input and output ends of the channels are made rounded.

FIG. 1 eofazhena tselnofakelna nozzle partial vfez; in fig. 2 - the same, top view.

The flush-type nozzle comprises a housing 1 with a swirl chamber 2 and a nozzle 3 and a swirler 4 in the chamber with tangential channels 5 having inlet and outlet ends rounded. 1 nozzle has a thread dp fastening it to the casting pipeline (n) and not shown in the drawing). BHxpRt iib 4 has in the upper part of the collar for reliable fixation of it in the corpus and is fitted along a tight fit with the elimination of rotation in the body as the fluid moves along the channels 5.

Tsvpnrfakelna nozzle works the gearbox dim way .. /;

Fluid coming under pressure along the nozzle axis enters channels 5 whirlwind 4, Thanks to the tangential flow of fluid flowing through them, acquired (this is a post axial and rotational; speed), which leads & These flows into an intense rotational-gaining motion within the swirl of 2 whirlpools 2. Due to the rounded shape of channel 5, at the exit of the vigor from swirl 4 to the swirl chamber 2, the flow expands to change the flow velocity of the part of the fluid that flows around It has rounded ends of the caps 5, as a result of which part of the liquid enters chamber 2 with a smaller moment (L M of motion, than the rest, flowing through channels 5. Cuts the rotary motion of S in the chamber S with a radial positive static pressure at which the static; The pressure of age increases with increasing distance from the axis of chamber 2. A part of the liquid entering chamber 2, with less moment of movement than the rest, does not balance in the radial pressure field and flows along the end wall Ate 4 to the nozzle axis. Collision in a flow area

A cove from all channels 5 leads to the formation of an axial movement of a fluid with a certain amount of momentum. This axial movement allows the air cavity to be eliminated and a fluid torch to be obtained.

Since the width of the channels 5 of the swirler 4 of this type of nozzles is commensurate with its height, the conditions for the entry of liquid into them have a substantial effect on. hydrodynamic characteristics of flows exiting from the channels into the vortex chamber. The curvature of the ends of the channels 5 swirl 4, having a slope to the axis of the nozzle in the tangential direction, when the liquid enters the channels eliminates the disturbed movement of the fluid in the channels 5 and contributes to the effective expansion of the outflow of channels from the channels 5.

Varying the radius of rounding of the inlet and outlet ends of the channels 5, it is necessary to obtain various fillings with the nozzle plume fluid {a uniform result with a density of the central and peripheral zones).

Formula and 3 about b te

A flush valve nozzle containing a housing with a swirl chamber and a conn. And a sixth swirler located at the 6th chamber with a tavgenaygas & ample and channels that have an up and down end, because of the fact that A perfectly filled torch and an increase in the operating reliability of the equipment, the inlet and the outlet ends of the channels are made welded.

Sources of information taken into account in the examination

1. Golovachevsky Yu. A. Sprinklers and nozzles of scrubbers of the chemical industry, M., Mashinostroenie, 1974, p. 240-246.

2. Khanin IM, and others. Mechanical nozzles technological devices. Kiev, UkrNIINTI, 1971, p. 13, fig. 3rd

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