SU953207A1 - Hydraulic pulse generator - Google Patents

Description

The invention relates to the destruction of a mountain massif by pulsating jets of elevated water: pressure and can be used in the mining industry and hydraulic engineering,

Known hydraulic pulse containing j opnyc, percussion pipeline, hydro-pneumatic accumulator, oscillator 1.

A disadvantage of the known impulse is the low efficiency of hydrotreating due to the constant frequency of pressure pulsations.

The aim of the invention is to increase the efficiency of hydraulic strikes due to an increase in the frequency of pulsings of pressure,

This goal is achieved by the fact that the hydraulic pulsator is equipped with a jack connected to the housing and the impact pipeline, while the impact pipeline is made telescopic.

The drawing is a schematic diagram of the proposed hydraulic pulsator, section.

Hydro-steering wheel includes shock pipe 1, on which hydro-pneumatic accumulators 2 and Jack-3 are installed, which is connected to

one side through the internal cavity of the hydropneumoaccumulator 2 with the supply line 4, and on the other hand with the oscillation generator 5. The impact pipe 1 is made telescopic and consists of two parts 6 and 7, one of which, nalimer part 6, is rigidly connected to the housing 8 of the jack 3 and enters

10 inside the part 7 of the impact pipe 1, and part 7 is connected to the housing 9 of the oscillator 5 and the stem 10 of the drill screw 3. The housing 9 is made in the form of two detachable parts 11 and 11. and 12. In part 11 of the case E of the oscillator 5, a locking device 13 is installed, made in the form of a hollow rod 14 with a piston 15. A low pressure chamber 16, forming a bath between the locking device 13 and part 11 of the housing 9, is connected to the cavity with a flexible element 17 and a separating diaphragm 18 whose course is limited on both

25 sides of the grids 19 and 20, and the shock pipe 1 through the transfer tube 21, the hydraulic resistance of which is significantly greater than the resistance of the nozzle smaller

30 diameter. In addition, the low pressure chamber 16 is connected to the atmosphere through the control valve 22. Another detachable part 12 of the housing 9 is represented by a saddle 23 and a block of trunks 24 and 25 of different diameters, with a larger diameter nozzle 24 located concentric with respect to a smaller diameter nozzle 25, the end of which is located above the nozzle 24 of a larger diameter at a distance of 4 dm (where d - diameter nozzle smaller diameter). This is required to more compactly form a jet of high pressure fluid. In addition, a working chamber 26 is formed in the piston 15 of the locking device 13, which is directly connected to the inside of the early cavity of the impact pipe 1, and the supply line 4 is represented by a flexible high-pressure hose. The device works as follows. The control valve 22 is closed and the locking device 13 is in the lower extreme position, and the working fluid, the passage through the internal cavities of the supply line 4, the hydropneumatic accumulator 2, the shock pipe 1, the working chamber 26, the locking device 13, the gap between the locking device 13 and saddle 2 trunks with nozzles 24 and 25 different diameters, expire into the atmosphere. The low pressure chamber 16 through the transfer pipe 21 is in communication with the successful pipeline 1, and the pressure in the chambers 26 and 16 are equal, and their working areas are selected so that they open the barrels with nozzles 24 and 25 of different diameters. at. closing the control valve 22 and the constant pressure in the impact pipe 1. The rod 10 is in its extreme upper position relative to the housing 8 of the jack 3, while part of the 7-impact pipe 1 relative to part 6 is pulled out, i.e. impact pipe has a maximum length. The activation of the impulse in operation is carried out by opening the control valve 22. At the same time, the pressure in the low pressure chamber 16 becomes less than in the working chamber 26 and due to the pressure differential, the locking device 13 is displaced. shifts to the uppermost position, sit down on the saddle 23 .. It closes the gap - between the saddle 23 and the locking device 13, i.e. a barrel with a nozzle 24 of a larger diameter is closed and directs the entire fluid flow to the barrel with a nozzle 25 of smaller diameter. Working fluid, passage through the internal cavities of the supply line 4, hydro-pneumatic accumulator 2, parts 6 and 7 of shock pipe 1, working chamber 26, hollow rod 14 with piston 15 of the locking device 13, saddle 23, barrel with nozzle 25 of smaller diameter, expires in the atmosphere. And since the nozzle 25 of a smaller diameter has a hydraulic resistance greater than that of nozzles 24 and 25, a hydraulic shock arises before a nozzle 25 of a smaller diameter. The pressurized wave propagates through the shock conduit 1 to the hydropneumatic accumulator 2 and is reflected from it in the form of a wave of normal pressure. During the movement of this wave to the hydropneumatic accumulator 2 and back, the pressure in the low pressure chamber 16, which through the transfer pipe 21 is filled with liquid from the impact pipe 1, initially increases smoothly until the separation diaphragm 18 is pressed from the grate 19 will not reach the grate 20, and then stepwise to a pressure greater than that in the working chamber 26. This causes the locking device 13 to move from the upper end position to the lower position, opening the liquid to the trunks with nozzles 24 and 25 of different diameters Ametr. Since the flow of fluid through the trunks with nozzles 24 and 25 of different diameters is greater, the pressure in front of the shut-off device 13 decreases sharply. The reduced pressure wave moves to the hydropneumatic accumulator 2 through the impact pipe 1 and is reflected from it in the form of a reduced pressure wave. During the movement of this wave to the hydropneumatic accumulator 2 and vice versa, the pressure in the low pressure chamber 16 initially decreases smoothly until the separating diaphragm 18, pressed from the lattice 20, reaches the lattice 19, and then abruptly to a pressure less than the working chamber 26. The locking device 13 moves from the lower extreme position to the upper one, opening liquid access to the barrel with a nozzle 25 of smaller diameter, a hydraulic shock occurs and the pressure wave propagates to the hydro-pneumatic the battery 2. The process of the hydropulse operation is repeated and the system enters the self-oscillation mode. After that, the rod 10 of the jack 3 is pushed into the housing 8 and draws part 6 of the impact pipe 1 into part 7, while the length of the impact pipe is reduced and the frequency of the pulsations in the working nozzle 25 increases. Then the rod 10 of the jack 3 extends from the housing 8, increasing the length of the impact pipe 1 and reducing the frequency

Claims (1)

Claim A hydraulic pulse generator containing a housing, a shock pipe, a hydraulic accumulator, an oscillation generator, 5 characterized in that, in order to increase the efficiency of hydraulic breaking by increasing the pressure pulsation frequency, the hydraulic pulse generator is equipped with a jack connected to the housing and the shock pipe, while the shock pipe is made telescopic.