SU994023A1 - Centrifugal nozzle - Google Patents

Description

(54) CENTRIFUGAL SPRAYER

; , - - 1, The invention relates to devices for decomposing liquid media and can be used, for example, in heat power engineering and the chemical industry. Known centrifugal nozzle, shchk choyucha. with tangential channels informing the source of fluid supply with a twisting rider, in the front end wall of which the nozzle 1 is made. A disadvantage of the known centrifugal nozzle is the unstable operation due to the tendency to low-frequency flow oscillations excited by the pressure medium code of the injection medium if amplli they are comparable to pressure drops on. nozzle, which reduces the reliability of the nozzle. The purpose of the invention is to increase stability. and reliability of the nozzle. This is achieved by the fact that in a centrifugal nozzle that includes a housing with tangential channels that communicate the source of fluid supply with a twist chamber, in the front end wall of which there is a nozzle, the tachtenschal channels are made in the housing from the front wall, and last; with the annular protrusion coaxially facing into the chamber, the inner diameter of which is greater than or equal to the diameter of the nozzle, the outer diameter is smaller than the inner diameter of the chamber by twisting neither at 0, 4-O, 8 of the diameter of the tangential channels and is 0.5-0 less than the length of the chamber of twisting , 7 diameters of tangential channels. FIG. 1 shows a centrifugal nozzle, a longitudinal section; in fig. 2 nozzles in operation. The centrifugal nozzle contains a twisting chamber 1 with an inner diameter. B and a length L, with a tension channel 2, with a diameter of | V / each, fo. middle end wall 3. with a nozzle with a diameter b (and an annular protrusion 4 having an outer diameter of 8 n BtiyTrenny diameter szts and length g, donn.

Ko 5. The main centrifugal nozzles are related by

e L - (0.5-0.7) de, y D-dn (0.4-0.8) dBX

Centrifugal nozzle works as follows.

The fluid, entering through tangential inlet channels 2, receives a vrajtelo-forward motion in the annular channel formed by the wall of the twisting chamber 1 and the outer surface of the annular protrusion 4, from the front end wall to the bottom 5. Near the bottom 5, the flow turns 90 and rotates, moves to the axis of the swirling chamber through the gap between the bottom of the viC 5 and the annular protrusion 4, turns another 90 and along the inner surface of the annular protrusion 4 moves 1 to the front end wall 3 and spills out through the nozzle mc

Studies have shown that the annular gap between the wall of the twisting chamber 1 and the outer surface of the annular protrusion 4 together with the radial clearance between the bottom of the nozzle 5 and the annular protrusion 4 creates the effect of a kind of hydraulic filter frequency, providing a reduction in the sensitivity of the working process in the centrifugal cavity Forsush and

to the influence of fluctuations in the injection medium. This makes it possible to increase the stability and reliability of the centrifugal nozzle, and hence the devices in which it is used.

Formula inventions

A centrifugal nozzle comprising a housing with tangential channels communicating a fluid supply source with a swirling chamber in which a nozzle is provided in the front end wall, wherein, in order to improve the stability and reliability of the nozzle operation, the tangential channels are made in the housing from the front wall side, and the latter is made with a coaxially circumferential protrusion facing the swirling chamber, the inner diameter of which is greater than or equal to the diameter of the nozzle, the outer diameter is less than the inner diameter of the chamber s twist on D 40, the diameter of 8 Tange ntsialnyh channel length and less on the chamber length twist 0.5-0.7 diameter of the tangential channels.

Sources of information taken into account in the examination

1. USSR author's certificate No. 663965, cl. F 23D 11 / O4, 1974 (prototype).

Claims (1)

Claim A centrifugal nozzle containing a housing with tangential channels communicating a fluid supply source with a swirl chamber, in the front end wall of which a nozzle is made, which is characterized in that, with a chain for increasing the stability and reliability of the nozzle operation, tangential channels are made in the housing from the side the front wall, and the latter is made with the annular protrusion coaxial to it, the inner diameter of which is greater than or equal to the diameter of the nozzle, the outer diameter is smaller than the inner diameter of the chamber twisting rods by 0.40.8 diameters of tangential channels and a length shorter than the length of the twisting chamber by 0.5-0.7 diameters of tangential channels.