SU379752A1 - DEVICE FOR FORMATION WELLS IN GROUND - Google Patents

Description

The invention relates to the construction industry, namely, devices for the formation of wells in the ground.

There are known devices for the formation of wells in the ground, for example, including an annular body in which a piston and an annular head are installed with an internal cylindrical through channel. However, these devices do not have the necessary impact energy.

The purpose of the invention is to increase the impact energy.

For this, a cavity filled with compressed gas is formed in the device case between the piston and the cover, and the pressure and drain cavities connected by pipelines to the source of working fluid between the annular head and the case, which also have the ability to connect to each other during the outer side surface of the annular striker, made with the inner annular cavity in which the spool is mounted, having a control cavity communicating through formed in the side the surfaces of the annular striker are radial holes with pressure and drain cavities. In addition, pipelines connecting the pressure and drain cavities with the source of working fluid are placed in flaps mounted on the outer side surface of the housing, and the lateral surface of the inner cylindrical through channel of the ring housing is grooved.

FIG. 1 shows a device for the formation of wells in the ground, a general view; in fig. 2 is a section along the line in FIG. one; in fig. 3 is a section according to BB in FIG. one.

A device for the formation of a well in the ground contains an annular body /, an annular head 2, a piston 5, a spool 4, a spring 5, a cover 6, a cavity B filled with compressed gas, flaps 7 in which pipelines 8, 9 are placed, pressure 10 and drain / / hoses.

Radial bores a, b, b and a longitudinal groove were made in the annular striker of the city. The housing and the hammerhead form a pressure head and a drain / 7 cavity. On the side surface of the inner cylindrical through channel of the annular

Corps made corrugated 12.

The device works as follows.

Fluid under pressure is fed through hose 10 and conduit 8 into the nanor cavity G and into the control cavity of the spool through the radial holes 8. As a result, the spool 4 is moved to the left position, compressing 5 and blocking the holes b.

Under pressure from the fluid, the piston 3 and the face 2 move to the right, compressing the gas in the cavity B and ejecting the liquid from the drain cavity / (.

At the end of the charging period, the pressure G and the drain D cavities are connected between themselves with the aid of a longitudinal groove r, therefore the pressure in the naive and drain cavities is equalized, and the spool 4 is moved to the right position by the action of the spring 5 .

Under the action of compressed gas, the piston 3 and the ring head 2 move to the left, the liquid is distilled from the pressure side into the drain cavity through the holes b, the overflow cavity of the valve and the holes a.

At the end of the working stroke, the ring head 2 strikes the anvil, at the same time the holes b are blocked by the body and the liquid from the pressure G cavity enters the control cavity of the spool.

When advancing the device in the ground, the soil is compacted around the outer surface and in its axial channel. The soil in the axial channel is squeezed out of it in the form of a core. The efficiency of advancing the device and pushing compacted soil out of it is facilitated by the corrugations 12.

Then the cycle repeats.

Subject invention

Claims (3)

1. A device for the formation of a well in the ground, comprising an annular enclosed ring lid at one end, with a piston and an annular head with an internal cylindrical through channel coaxial with the longitudinal axis of the device, characterized in that, in order to increase the impact energy, between the piston and the lid is formed a cavity filled with compressed gas, and between the annular striker and the casing, the pressure and drain cavities connected by means of pipelines to the source of the working fluid are also connected. with another during operation through a longitudinal groove formed on the outer side surface of the annular striker, formed with an internal annular cavity in which a spool is mounted, having a control nozzle communicating through radial holes formed in the side surface of the annular striker with the pressure and drain cavities. 2. The device according to claim 1, characterized in that the pipelines connecting the pressure and drain cavities with the source of working fluid are located in flaps mounted on the outer side surface of the housing. 3. The device according to claim I, characterized in that the lateral surface of the inner cylindrical through channel of the annular body is made corrugated. Fig 2 Fig.Z