SU604989A1 - Hydraulic gun nozzle - Google Patents

Description

one

The invention relates to the field of hydraulic impulse machines and can be / is applied to the destruction of rocks.

Known nozzles hydromonitor, including two coaxially located pipe with channels, forming between them an annular channel 1J.

Also known are the nozzles of the jetters, including a turbine adapter valve and a pulse nozzle 2J.

The main disadvantage of the known designs of jetting nozzles lies in the relatively low effectiveness of the erosion of strong mountain rocks.

The aim of the invention is to increase the efficiency of the erosion of the creation of intermittent impulse jets.

This goal is achieved by the fact that additional blades are made on the outer cylindrical surface of the turbine valve, which are periodically communicated through the radial-transverse channels of the turbine valve and channels of the inner pipe with a pulsed nozzle, and additional channels are made in the thickened part of the internal pipe that are permanently connected , with additional external vanes and radial-transverse slit-like channels of the turbine valve.

FIG. 1 shows a jet nozzle, a longitudinal section; in fig. 2 and 3 are transverse sections, respectively, A-A and B-B in FIG. one; in fig. 4 - longitudinal profile of the outer blades of the turbine valve; in fig. 5 is a longitudinal profile of the internal blades of the turbine valve.

The jetting nozzle consists of an outer pipe 1 serving as a housing, an internal pipe 2 placed on it with the possibility of rotation of a turbine valve 3 with external vanes 4 and internal vanes 5, a pulse nozzle 6, a head end nut 7 and a tail end nut 8. In the external pipe 1 channels 9 are used, which serve as exhaust nozzles. In the thickened part of the inner pipe 2, longitudinal channels 10 (shown in dotted lines in Fig. 2) and additional longitudinal channels 11 are made. Inside valve 3, non-intersecting longitudinal channels 12 and radially transverse gaped channels 13 are made, which serve to pass the first exhaust (accelerating) fluid, and the second impulse jets of fluid in the moments of shots. The total area of the channels 9 is several times larger than the area of the pulse nozzle 6. The turbine valve 3 is seated with the possibility of rotation on

a refined part of the inner pipe 2, in which the slit-shaped channels 14 are made for the passage of impulsive liquid jets.

Water under pressure passes into the nozzle through the CTBOvT of the jetting machine (not shown), fastened to the nozzle nut 8, nozzle channels 10, 12, 9, as well as channels 11, 13. In connection with the curvature of the rods 5, the water passes through the longitudinal channels The 12 turbine clan 3 rotates around the internal nozzle 2. During periods when the channels 10 of the pipe 2 overlap the end blades of the blades 5, the outflow of fluid through the channels 9 stops, the channels 13 of valve 3 communicate with the slotted channels 14 of the pipe 2 and the pulse-shaped nozzle 6. In due to the fact that the total exhaust area s channels 9 and 10 respectively, channels several times larger than the pulse 6 is drowsy, there is a hydraulic shock in the jetting trunk soprovozhdayuschiys significant increase in the initial pressure nrotnv. Under the action of a water hammer, fluid from the barrel of the jet through channels 11, 13, the cavity of the tube 2 and sonlo 6 is thrown onto the object of destruction. When the channels 10 are blocked by the turbine valve 3, the liquid does not fall on the blades 5, however, the valve 3 returns during this period for the bed 4, through which the channels of the nozzle 2 n nozzle 6 through the channels 13, 14 continue to receive a pulse of liquid. The process then repeats.

Claims (2)

1. USSR author's certificate No. 456079, cl. E 21C 1/00, 1974. 2. USSR author's certificate number 152433, cl. E 21S 25/60, 1962. // 13 Uju five iPuiJ