SU1041732A1 - Device for measuring fluid distribution in atomized jet cross sections - Google Patents

Description

 The invention relates to the studies of various injecting jet engines, in particular the nozzles of internal combustion engines, gas turbine engines and stationary power units.

A device is known for measuring the distribution of liquid over the cross sections of a spray jet, comprising a nozzle, a guide and a fixed ic6op sectional apparatus ij

The disadvantage of this device is that it does not provide the ability to work with backpressure on liquids with a wide range of changes in viscosity, in particular, highly viscous liquids adhering to the surfaces of collectors and walls, pipelines, which precludes measuring.

. The purpose of the invention is to provide operation of the device with backpressure on liquids with a wide range of changes in viscosity.

The goal is achieved by the fact that in the device for measuring the spray jet over the cross sections of the sprayed jet containing the nozzle, the guide and the fixed assembly sectional apparatus, the guide and the assembly apparatus are made in the form of two successively mounted on the axis under the nozzle and cylinders coaxial with it of the same diameter, the willer of the guide vane mounted on an axis with the possibility of turning around its axis and provided with a block of concentric cylinders placed inside, divided into sections Using evenly spaced radial partitions, the edges of which lie flush with the upper and lower planes of the cylinders, each section being blocked by a guiding element in the form of a helical spiral of a part of a ruled helicoid located from the upper edge of the radial septum to the exit to the lower plane of the cylinders with the formation of a through channel between this exit and the adjacent partition, and all guiding elements in the sections are equally oriented with respect to the nozzle, and the cylinder of the assembly section by means of radial partitions in alternating drain - without bottom and assembled - the bottom section, the total number of which is equal to the number of sections iapravl guide apparatus, wherein prefabricated. the sections are additionally divided by concentric cylindrical partitions, the radii of which coincide with the radii of the respective cylinders of the anniapaTa guide.

FIG. 1 shows the device, a general view; in fig. 2 - guide / apparatus; in fig. 3 shows a combined appar-aT ;, in FIG. 4 - Diagram of the positions of the guide and subassemblies during operation of the device.

A device for measuring the distribution of liquid over the cross section of a spray jet includes a guide apparatus 1, a collecting apparatus 2, an actuator 3 for turning the guide apparatus

1, axis of the guide vane, pressure chamber 5, test nozzle 6,

corner clamps 7 assembly apparatus

2, thrust crosses 8 for the k-axis of the guide vane 1, the thrust bearing 9 of the axis 4, the pneumatic pusher 10, the assembly 11 of the pneumatolator 10 fastening to the pressure chamber 5, the Axle 5 centering assembly 72, the supports 13 of the centering assemblies 12.

Track 1 and assembly 2 apparatuses. You are made in the form of two successively installed on the axis under the nozzle 6 and cylinders of the same diameter that are coaxial with it. In this case, the cylinder of the guide vehicle 1 is rigidly mounted on the axis 4 and has the ability to rotate around it along its axis, and the cylinder of the collecting device 2 is fixedly mounted on the corners-clamps 7.

The cylinder of the guiding apparatus 2 is provided with concentric cylinders 1 (Fig. 2) placed inside, divided into sections by uniformly spaced radial partitions 15, the edges of which are upper 16 and lower 17 lie flush with the upper 18 and lower 19 planes of cylinders 14 , each section is blocked by a guiding element 20 in the form of a helical spiral of a part of a ruled helicoid located from the upper edge 16 of the radial partition 15 until reaching the lower plane 19 of the cylinder block I (lower edge 17) Hovhan through passageway 21 between the output (the lower edge of the adjacent 17Jli Negotia | 5odkoy 15. All guide elements 20 in sections of the guide device 1 Gfig 1 and 2.) are identically oriented relative to the nozzle 6.. - .-, the cylinder of the assembly apparatus 2 (figs, 1 and 3) is divided by radial partitions 22 into alternate drain 23 without a bottom) and precast 2 with a bottom 25 sections, the total number of which is equal to the number of sections directed by the device one. In this case, the prefabricated sections are divided by means of cylindrical partitions 26 which are located ideally, whose radii coincide with the radii of the corresponding cylinders H of FIG. 2) guide apparatus 1. / Device FOR: The measurement of the distribution of liquid over the cross sections of the spray jet works as follows. . In the pressure chamber 5 (Fig. 1), the necessary backpressure is created and the fluid is supplied to the test nozzle 6. The fluid sprayed by the nozzle 6 enters the guiding apparatus 1 and then goes through the draining sections 23 of the collecting apparatus 2 to the drain (Fig. F, position). tjo achieve the required test mode by means of the actuator 3 of the pneumatic pusher 10 connected to the air distribution system (not shown, the guide unit 1 is turned over relative to the fixed collecting device 2 by an angle equal to the angle between the radial partitions 22 of the collecting apparatus 2, for example, six and six collecting sections. At the same time, the overflow sections 23 of the collecting apparatus 2 overlap and the liquid from the guide apparatus 1 enters the collecting - г section 2 of the collecting apparatus 2 (Fig. k, position 2). For a time fixed, for example, by an electric stopwatch (not shown), again with the help of the actuator 3 of the pneumatic rotator 10, the guiding apparatus 1 returns to its original position and the fluid begins to flow, and the collecting sections 2k overlap. Further, the fluid supply, the test nozzle 6 the liquid injected in separate sections is measured and measured. The amount of liquid collected in the section of the apparatus is determined either by volume or by weight (in the latter case it is advisable to remove the s). In the measurement result, the distribution of the fluid over a given section of the spray jet is determined. To carry out a similar measurement for another cross section of the sprayed jet, the nozzle 6 in the pressure chamber 5 is installed on another tube whose length corresponds to the cross section under control. The proposed device, due to its placement inside the pressure chamber, makes it possible to measure the distribution of liquid over the cross section of the spray jet when working with any backpressure, and since it is on the backpressure. Since the sprayed jet to the prefabricated sections does not have any pipelines and intermediate elements, it allows you to work continuously on highly viscous liquids. .

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Claims (1)

DEVICE FOR MEASURING LIQUID DISTRIBUTION BY SPRAYED JET SECTIONS, containing a nozzle, a guide and a fixed sectional apparatus, is cast. I mean that, in order to ensure t backpressure operation on liquids with a wide range of viscosity changes, the guide and assembly devices are made in the form of two cylinders of the same diameter sequentially mounted on the axis under the nozzle and coaxial with it, and the cylinder of the guide device is mounted on the axis with the possibility rotation around its axis and is equipped with a concentric cylinder block placed inside, divided into sections by means of evenly spaced radial partitions, the edges of which lie flush with the upper and lower planes of the cylinders, each section being covered by a helical spiral guiding element — a part of a ruled helicoid located from the upper edge of the radial partition to the exit to the lower plane of the cylinders with the formation of a through channel between this exit and the adjacent partition, and all guides the elements in the sections are equally oriented with respect to the nozzle, and the cylinder of the collecting unit is divided by means of radial partitions into alternating drain ones - without bottom and prefabricated - with the bottom of the section General. the number of which is equal to the number of sections of the guide apparatus, and the prefabricated sections are further divided by concentric cylindrical partitions whose radii coincide with the radii of the corresponding cylinders of the guide apparatus. ¹ 1041732