RU221665U1 - SOIL THAWING DEVICE - Google Patents

Abstract

The utility model relates to the field of pipeline transport and can be used when performing excavation work as part of a major overhaul, diagnostic examination, industrial safety examination, additional diagnostic monitoring of pipeline sections of defects identified as a result of in-pipe diagnostics, in the conditions of permafrost soils of the Far North. The device contains a trapezoidal frame, open in cross section, made of a metal sheet and consisting of a horizontal base and sides located at an angle to it. Inside the frame, on its walls, there is a steam distribution pipeline, to which are attached steam peaks located at the ends of the sides of the frame. The frame has quick-release connections for connection to a mobile steam unit. The proposed device increases the speed of work and does not require significant human and material resources. 3 ill.

Description

The utility model relates to the field of pipeline transport and can be used when performing excavation work as part of a major overhaul, diagnostic examination, industrial safety examination, additional diagnostic monitoring of pipeline sections of defects identified as a result of in-pipe diagnostics, in the conditions of permafrost soils of the Far North.

In the process of carrying out production activities related to the operation of linear communications, there is a need to carry out excavation work to open a section of the main pipeline (hereinafter referred to as MT) in conditions of permafrost soils (hereinafter referred to as permafrost) and low temperatures. In winter, MMGs freeze to a monolithic state, which does not allow the pipe to be opened in the shortest possible time using excavation equipment and there is a possibility of damage to the pipeline. It is worth considering that in accordance with the Rules for the Protection of Trunk Gas Pipelines, approved. According to the Decree of the Government of the Russian Federation dated September 8, 2017 No. 1083, opening of a pipeline section at a distance of less than 2 m from the MT axis is carried out manually without the use of special equipment. All of the above requires the implementation of preparatory measures before carrying out excavation work.

Preparatory work includes steaming the opening area.

Taking into account the deep freezing of soils in the near-pipe space, there is a need to carry out work to thaw the soil using mobile steam units based on automotive equipment (Mobile Steam Unit, hereinafter referred to as PPUA). The standard package of PPUA 1600/100 includes a steam lance 1.5 m long with a quick-release connection - chosen as the closest analogue (https://tgavto.ru/catalog/peredvizhnye-parovye-ustanovki-ppua/peredvizhnaya-parovaya-ustanovka-ppua -1600100-kamaz).

A known device for thawing frozen soil (SU 1440111 published 1999.05.10), made in the form of a steam needle, including a tubular body and a tip, is equipped with a removable cover with a central hole and a conical inner surface mounted on the lower end of the tubular body, the tubular body is made with holes , located in a plane perpendicular to its axis, and the tip is made in the form of a glass with a spherical bottom and is installed with the ability to move in the direction of the axis of the steam needle and cover the holes in its body, the spherical bottom of the tip is made with holes located in its peripheral part behind the line of its touching the conical surface of the removable cover, and the lower end of the tip is equipped with a longitudinal rod located in the central hole of the removable cover.

Carrying out work using a steam lance is labor-intensive and time-consuming due to the fact that effective soil thawing when working with a lance is possible within a radius of 0.5 m, and when the lance is moved to a new area, the previous, previously heated area freezes. To promptly steam a site, it is necessary to involve several PUUAs, which is economically infeasible and labor-intensive. A significant disadvantage of steaming when using PU foam is the presence of a single peak, which provides a small steaming area.

The objective of this utility model is to create a soil thawing device with increased efficiency.

This problem is solved by the fact that the soil thawing device contains a trapezoidal frame, open in cross section, made of a metal sheet, reinforced with profile pipes, and consisting of a horizontal base and sides located at an angle to it, inside the frame on its walls there is a steam distribution pipeline, steam lances are attached to the pipeline, located at both ends of each side of the frame, and the frame has quick-release connections for connection to a mobile steam unit.

The technical result is achieved by the fact that the proposed device makes it possible to increase the steaming area, more than 6 times compared to analogues.

The essence of the device is illustrated by drawings, where

in fig. 1 shows a top view;

in fig. 2 - view A-A in FIG. 1;

in fig. 3 - side view.

The device contains a trapezoidal frame, open in cross section, made of a metal sheet, and consisting of a horizontal base 1 and sides 2 located at an angle to it. The frame is reinforced with profile pipes 3. Inside the frame on its walls there is a pipeline 4 with a closed steam distribution circuit. Steam peaks 5 are attached to the pipeline 4, located at the ends of the sides 2 of the frame. The frame has quick-release connections 6 for connection to a mobile steam unit (not shown). For ease of lifting and moving, the device is equipped with lugs 7.

Application of the device consists of the following steps:

determining the location for excavation work;

clearing snow cover;

designation of the pipeline axis;

placement of the device on the axis of the pipeline;

connecting PPUA;

control of elevation marks.

As the soil is steamed, the device is moved with further extraction of the thawed soil using an excavator (soil cutting) or manually near pipeline 8. The soil cutting procedure is carried out until the trench is completely ready for work.

The proposed device increases the speed of work and does not require significant human and material resources.

Claims (1)

A device for thawing the soil, characterized by the fact that it contains a trapezoidal frame, open in cross section, made of a metal sheet, reinforced with profile pipes, and consisting of a horizontal base and sides located at an angle to it, inside the frame on its walls there is a steam distribution pipeline, to steam lances are attached to the pipeline, located at both ends of each side of the frame, while the frame has quick-release connections for connection to a mobile steam unit.