SU1051184A1 - Apparatus for trenchless laying of pipelines - Google Patents

Abstract

1. A DEVICE FOR BETTING PIPELINE LAYING, containing a pipe-cartridge, a working body, in the cavity of which the ground pipe is located, and a pipe for supplying the working medium, characterized in that, in order to increase the speed of eruptions and core transportation, the device is equipped with a turbine, on which shaft tubes are arranged oriented perpendicular to it, which communicate with the cavity of the tube-cartridge, while the shaft part is made hollow and communicates with the pipeline for supplying the working fluid. 2. The device according to claim 1, characterized in that the pipeline for supplying the working medium is located in the soil cover and the turbine is located in the cavity of said pipeline. 3. The device according to claim 1 and 2, characterized in that the tubes are placed behind the non-working end of the working body. f ™. 00 4:

Description

The invention relates to the construction of underground communication lines and can be used for trenchless laying of pipelines during the construction of gas and oil pipelines.

A device for trenchless laying of pipelines is known, which comprises a cylindrical body, the front wall of which is a conical gage, extending to it, connected to a hollow leader having a working tip. A pneumatic impact actuator is placed in the housing to introduce the leader into the ground, and around the leader there is an explosive chamber to compact the soil and form an expansion to advance the housing by filling the chamber with an explosive fuel mixture and blasting it 1.

The disadvantage of this device is the complexity of its design and operation due to the presence of two dissimilar energy drives. The operation of the explosive chamber does not guarantee the uniform spreading of the soil due to the uncontrollable process of the explosion, moreover, the body and the leader of the device are destroyed from the explosions, which leads to frequent periodic replacements of the parts destroyed by the explosions. The use of this device is associated with the need to observe special safety rules, narrowing the scope of its possible application.

Closest to the present invention is a device for trenchless laying of a pipeline, containing a pipe cartridge, a working body in which cavity the ground pipe is located, and a pipeline for supplying the working medium 2.

A disadvantage of the known device is its insignificant efficiency in carrying out the operations of formation, separation and transportation of the soil core, as well as the impossibility of further improving the method along the way of intensifying the process of generation of the excavation for laying the pipeline due to the fact that the core formed in the cartridge pipe when it is embedded in the soil , is pushed out of its cavity by the force of a gas stream, and this effort must be significant in power, for the development of which it is necessary to use powerful forces. nical compressors, which leads to a significant cost of the pipeline installation process. When using conventional serial compressor equipment, the device's performance is low due to the fact that the volume and mass of the core being formed and transported are insignificant and it is necessary to produce frequent inter-operational non-rational cycles associated with the need to conduct the process with private short penetrations.

The purpose of the invention is raising. the speed of separation and transportation of the core.

The goal is achieved by the fact that the device for laying pipelines without a trace, containing a pipe cartridge, a working body in which cavity the ground pipe is located, and a pipe for supplying the working medium, are equipped with a turbine, on the shaft of which pipes are arranged, oriented perpendicular to it. the cavity of the pipe-cartridge, while part of the shaft is made hollow and communicated with the pipeline for supplying the working fluid.

In addition, the pipeline for supplying the working medium may be located in the soil conductor, and the turbine is located in the cavity of the pipeline.

In this case, the tubes can be placed behind the non-working face of the working body.

FIG. 1 shows the proposed device, a general view with a cut along the longitudinal axis; in fig. 2 - operation of the device in the formation of core; in fig. 3 - the same, with the separation and transportation of the core.

The device comprises a cartridge-1 tube with a scrape 2 for forming a core, in which the ground pipe 3 is placed in the form of a tube, with a working tip 4 attached to its end for punching a hole in the ground. A turbine 5 with a hollow shaft 6 is located in the cavity of the shell 2, at the end of which the tubes 7 are fixed perpendicular to its axis, and opposite the tubes 7 in the working tip 4 there are holes 8 for the working medium ejected from them to flow out of polo 7. mu shaft 9 through the holes 10, made in the walls of the hollow shaft. The turbine 5 is placed in the cavity of the pipeline 11, designed to supply a working medium, such as compressed air, to the tubes 7 through the pipe 12 from the compressor (not shown). In the cavity of the soil pipe 3, the pipe 11 is installed with a gap 13 for transporting the soil pulp through this gap, which is then discharged through a pipeline 14 connected to the cavity of the soil pipe by means of a valve 15. To fix the pipe in its cartridge 1, rotary locks 16 are installed on its machines.

The supply device turbine 5 increases the efficiency of the device due to the fact that the working medium, the passage through the cavity of the pipe. 11, interacts with the turbine 5, spins its shaft 6 and the tubes 7, then the working medium (for example, compressed air) flows through the holes 10 into the tubes 7, from which, under the action of pressure, and also under the action of the centrifugal force created by the turbine 5 tubes 7 and evenly processes the bottom zone, thus, the turbine 5 plays a decisive role in excavating the bottomhole and is designed to rotate the tubes 7, creating favorable conditions due to centrifugal force and ejection to supply the working medium to the bottom, while the hollow shaft 6 of the turbines 5 contributes to this effect, since it does not prevent the free flow of the working medium from the cavity of the pipe 11 to the bottom through the tubes 7. Installing the tubes 7 perpendicular to the axis of the shaft helps to obtain a shorter path for the streams emanating from them before the blow and all the energy of these jets is applied to slaughter. Tubes 7 are fixed at the back of the working tip 4 to protect them from the mechanical impact of the soil when the tip is inserted. The location of the turbine 5 in the cavity of the pipe 11 for supplying the working medium to the tubes 7 is most appropriate, since this eliminates the loss of the working medium and combines the path of the supply of the medium to the bottom. Device it is intended to form the core 17 by destroying the bottom 18 and for transportation with a preliminary separation of the core by creating pressure in the bottom zone 19 by supplying the working medium. The operation of the device for the trenchless laying of the pipeline is carried out as follows. The device is inserted into the ground (Fig. 2), for example, with the help of hydraulic jacks (not shown due to the triviality of this operation), the core 17 is formed in the cavity of the pipe cartridge 1, then through the pipe 12 the working medium is fed into the cavity of the pipe 11 For example, compressed air, which spins the turbine 5 with tubes 7, further, passes through the holes 10 under the action of pressure and especially under the action of centrifugal forces formed by the rotation of tubes 7, the working medium is thrown into the jets at the bottom 18, destroying the soil and core from array gr unta At the same time, centrifugal force significantly increases the pressure of the jets on the bottom surface. At the same time, the ground pulp is withdrawn in the flow of the working medium spent for the bottomhole through the gap 13 and the pipeline 14. When the ground completely collapses along the ring at the bottom 18 (this process is controlled or located at the extreme points of the ylonka 2 in front of the openings 8 by the strain gauges from the tubes 7, they begin to act on the strain gauges or when the pulp pipeline 14 is no longer in operation, only the working medium comes out) the valve 15 is closed and the bottom 18 is sealed; continuing to serve the work environment. The pressure G in the bottom zone increases (Fig. 3), which leads to the separation of the core 17, a cavity 19 is formed at the bottom, into which the working medium continues to be supplied and the core is transported from the cavity of the cartridge tube 1. After this process is repeated according to the described technological sequence . Thus, the proposed device provides an intensification of the process of core formation and transportation by increasing the effect of working fluid jets by centrifugal forces generated by the turbine and by tearing off and transporting the core by the same working medium.

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Claims (3)

1. DEVICE FOR Trenchless LAYING OF PIPELINES, containing a chuck pipe, a working body in whose cavity a soil pipe is placed, and a pipe for supplying a working medium, characterized in that, in order to increase the rate of separation and core transportation, the device is equipped with a turbine on the shaft of which there are tubes oriented perpendicular to it, which are in communication with the cavity of the cartridge tube, while part of the shaft is hollow and in communication with the pipeline for supplying a working medium. 2. The device according to π. 1, characterized in that the pipeline for supplying a working medium is located in the soil pipe, and the turbine is placed in the cavity of the specified pipeline. 3. The device according to π π. 1 and 2, characterized in that the tubes are placed behind the inactive end of the working body. <g SU „„ 1051184