Installation for trenchless repair of pipelines

FIELD: machine building.

SUBSTANCE: installation for trenchless repair of pipelines consists of drum with cloth shell wound on it, of bath for impregnation of this shell with polymer composition, of hollow cantilever for laying cloth shell into film sleeve, and of pneumatic-mechanical gate with pressure gauges and valves arranged on it. The bath is equipped with freely rotating rollers and has a cover with an opening hatch for refilling polymer composition and with thermo-electric heaters for polymer composition controlled heating. In the cover from the side of the bath there are made two slits opposite to each other for input and output of the cloth shell. The bath, the cover and its hatch have heat insulation coating on external side.

EFFECT: impregnation of cloth shells with polymer composition at low ambient temperature and accelerated impregnation, increased efficiency of installation for trenchless repair of pipelines.

3 dwg

 

The invention relates to the equipment for repair work, in particular to a device for repairing pipelines.

A device for implementing the method of recovery of the pipeline (RF patent for the invention №2198341, IPC F16L 58/10, published. 2003), including a reel on it shell of the fabric of the cloth and a tub of glue, between which and the beginning of the pipeline has been consistently found to hollow console for laying tubular and water seal connected to the pipe flexible pipe and designed to create a positive air pressure at the inlet in the pipeline and sealing feed him in a fabric shell with film sleeve.

It is also known a device for recovery of the pipeline, which is the technical entity closest to the proposed technical solution (RF Patent for the invention №2248497, IPC F16L 58/10, published. 2005), including a reel on it with a fabric shell, a bath for the glue provided with freely rotating rollers, hollow console with film sleeve and a mechanical shutter placed on it by the pressure gauges and valves.

The disadvantages of the known devices is the inability to perform their repair work at low ambient temperatures (below 0°C), due to the complete termination of impregnation what leem tissue membranes, due to the increase of its viscosity, and because of the low efficiency at these temperatures most of the hardeners polymer resins. In the case of execution of works at low temperatures (0 ÷ plus 15°C) having a great time and the low quality of the bonding, due to the increase in the viscosity of the adhesive and, consequently, poor impregnation them tissue membranes. To reduce the viscosity of the adhesive used solvents resin, which, however, reduce the strength of the coating, increase its porosity, which impair the protective properties of the coating.

The objective of the invention is to improve the quality and reduce the time of impregnation glue tissue in the bath at low ambient temperatures.

The problem is solved so that the installation for trenchless repair of pipelines, including a reel on it with a fabric shell, a bath for impregnation of this shell polymer composition, provided with freely rotating rollers, hollow console for laying fabric shell in film sleeve, mechanical shutter placed on the gauges and valves, according to the invention tub has a lid with an opening hatch for dressing polymer composition and thermoelectromagnetic for regulated heating of the polymer composition, cover with a hundred the ons baths made two slits opposite each other for input and output tissue, and tub, cover and hatch have an insulating coating on the outside.

Figure 1 shows the constructive-technological scheme for trenchless pipeline repair (vertical longitudinal section); figure 2 - bath for impregnation of adhesive tissue (vertical longitudinal section; figure 3 is a view of bath from the side in figure 2.

Installation for trenchless pipeline repair (figure 1) consists of a drum 1 with a fabric sheath 2, bath 3 for impregnation of this shell polymer composition, equipped with guide rollers 4 mounted on the tub 3, a hollow console 5 for laying fabric shell in film sleeve 6 and the mechanical shutter 7 to host gauges 8 and the valve 9 mounted on the pipe 10. Bath 3 in longitudinal section in the direction of movement of the fabric shell 2 has a U-shape with legs 11, provided with a cover 12 and located in the lower part of the bath thermoelectromagnetic 13 for regulated heating of the polymer composition, the cover 12 from 3 baths made two slits a and b facing each other for input and output of a fabric shell 2 and the cover 12 is equipped with an opening hatch 14 for dressing polymer composition, and the tub 3, cover 12 and Luke 14 have an insulating coating 15 on the outer side.

Setup works as education is.

Preliminary from durable fabric cloth (white nylon, Dacron and the like) by turning in a spiral in the direction perpendicular to the long side, form a single or multi - layer shell 2 and wind it on the reel 1, and the end is passed through the bath 3 with the polymer composition. Thus thermoelectromagnetic 13 support a positive temperature polymer composition, not allowing it to thicken at negative ambient temperatures, which allows the polymer composition to penetrate deeper into the tissue membrane. Then the fabric shell 2 through the hollow console 5 pass inside film sleeves 6 and then together with him stretch through mechanical shutter 7 by fastening them by sticking to the outer surface of the end of the pipe 10. After that, the valve 9 from the compressor (not shown) is supplied the air to ensure the integrity and the desired pressure monitored by pressure gauges 8. Later in the mechanical shutter 7 by pumping air through the valves 9 creates the necessary excess of the working pressure (0,02÷0,04 MPa), under which the film sleeve 6 and the fabric layer 2 will be drawn into the pipeline 10. After the leading edge of the shell 6 with the sleeve 2 under the action of the working pressure of the air will be moved to the output end of labor is aprovada 10, their movement is stopped and the pressure of the air inside the fabric shell 2 retain until the end of its bonding to the inner surface of the pipeline 10. After gluing fabric shell 2 film sleeve 6 is removed and the entire installation is moved to a new area of work. To ensure the normal operation of the unit at low ambient temperatures consumable materials (resin, hardener, fabric and film) it is recommended to store in a heated room, but from the resin and hardener to prepare a polymer composition, which then stand in the open air for a Gulf in the bath in thermos or insulated containers.

The proposed installation will allow for the possibility of impregnation of the fabric sheath polymer composition and, therefore, trenchless repair in General, at low temperatures (0 ÷ -10°C) and acceleration impregnation - at low temperatures (0 ÷ plus 15°C), which, in turn, will improve the operational capacity of the plant for trenchless repair of pipelines.

Installation for trenchless repair of pipelines, including a reel on it with a fabric shell, a bath for impregnation of this shell polymer composition, provided with freely rotating rollers, hollow console for laying tkane the second shell film sleeve, mechanical shutter placed on the gauges and valves, wherein the tub has a lid with an opening hatch for dressing polymer composition and thermoelectromagnetic for regulated heating of the polymer composition, in the cover from the side of the bath made two slits opposite each other for input and output of a fabric shell and tub, cover and hatch have an insulating coating on the outside.



 

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