RU217741U1 - REUSABLE SEASONAL COOLING UNIT (MOUNTING/DISASSEMBLY) - Google Patents

Abstract

The utility model relates to the field of construction and operation of buildings and structures in areas with difficult engineering and geocryological conditions, namely the thermal stabilization of permafrost soils. This utility model is intended to implement a practical mechanism for multiple mounting/dismantling of seasonal cooling devices.

The claimed technical result is achieved by creating a sealed closed circuit with the possibility of creating a continuous circulation of the coolant in it to thaw the enclosing soil, followed by the extraction of the heat stabilizer while maintaining performance characteristics with the possibility of reuse without loss of tightness.

Description

The utility model relates to the field of construction and operation of buildings and structures in areas with difficult engineering and geocryological conditions, namely the thermal stabilization of permafrost soils.

This utility model is intended to implement a practical mechanism for multiple mounting/dismantling of seasonal cooling devices.

It is known that during the construction of capital structures on permafrost soils, it is necessary to apply special measures to maintain their temperature regime during the entire period of operation and to prevent the weakening of the bearing foundations during their thawing. For these purposes, seasonal cooling devices (soil thermal stabilizers) are used, the refrigerant in which are liquefied gases: freon, carbon dioxide and ammonia. During the repair of production wells, carried out with the help of heavy overall equipment, damage often occurs to soil thermal stabilizers located in close proximity to production wells. As a result of damage, the thermal stabilizers of the soil lose their efficiency.

In order to ensure the design temperature regime of the foundation soils, after the completion of repair work at production wells, it is required to install new soil thermal stabilizers.

A device for temperature thermal stabilization of permafrost soils is known (Patent RU 2 556 591 C1 IPC E02D 3/115 publ. 10.07.2015).

The device for temperature thermal stabilization of permafrost soils contains a heat stabilizer based on a two-phase thermosyphon, including an above-ground condenser part and underground transport and evaporation parts, placed in a refrigerant sleeve, which is a hollow cylindrical body with a bottom and a sealing element at the upper end with a hole for installing a heat stabilizer. The sealing element is a split gland seal, which consists of a support ring mounted on a circular step made in a sleeve, a pressure ring and sealing rings made of thermally expanded graphite sandwiched between them.

The technical result consists in providing an expansion of the temperature range for performing the installation work of thermal stabilizers, as well as preventing the ingress of residual sealing materials into the sleeve cavity filled with coolant.

The disadvantages of the known device include a decrease in the efficiency of the soil heat stabilizer due to the placement of additional fillers in the sleeve, which impede heat transfer. There is also no possibility of changing the installation location of the soil thermal stabilizer without additional labor costs for dismantling the sleeve, or installing a sleeve with filler in a new installation location of the thermal stabilizer.

Also known is the invention of a soil thermal stabilizer (Patent RU 2 661 167 C2 IPC E02D 3/115 publ. 06/26/2018). Soil thermal stabilizer of year-round action for accumulating cold in the foundations of buildings and structures, containing a steel thermal stabilizer pipe and an aluminum condenser pipe, characterized in that the thermal stabilizer condenser is made in the form of a vertical pipe consisting of a condenser body, a condenser cap and two finned condensers on the outside, area the fins of which are not less than 2.3 m ² , while the heat stabilizer has an element for slinging in the upper part in the form of a mounting bracket.

The technical result is achieved by reducing the number of operations and the ability to work on one side of the structure, increasing the reliability and safety of installation, simplifying the procedure for replacing damaged sections.

The disadvantages of the known invention include the impossibility of dismantling in a sealed state while maintaining operational characteristics with the possibility of reuse without additional measures to thaw the soil in the installation area of the invention.

The purpose of this utility model is to remove the heat stabilizers from the ground with minimal labor costs when performing repair work on production wells and, upon completion of the repair work, return them to the design position.

This utility model is aimed at solving the following problems and the technical result:

1) thawing of the enclosing soil;

2) extraction of the thermal stabilizer of the soil with the preservation of operational characteristics for further reuse without loss of tightness.

The claimed technical result is achieved due to the continuous circulation of the coolant in a sealed closed circuit.

The design of the claimed utility model is shown in the drawing. Along the longitudinal surface of the heat stabilizer (1), using steel clamps (2) and a steel cylinder (3), a closed circuit is mounted, formed by a thin-walled tube (4), on the end sections of which connection valves (5) are provided. If it is necessary to remove the heat stabilizer (1) from the soil, the working fluid (heat carrier) is pumped into a thin-walled tube (4) through the connection valve (5). During the circulation of the coolant through the thin-walled tube (4), the surrounding frozen soil is thawed by heat transfer. The thermal stabilizer is completely dismantled from the ground in a sealed state with the preservation of performance characteristics with the possibility of reuse.

The advantages of this utility model are the possibility of dismantling in a sealed state while maintaining operational characteristics with the possibility of reuse without additional measures to thaw the soil in the installation area of the utility model and ensuring the efficient operation of the soil thermal stabilizer due to the absence of additional fillers that impede heat transfer.

Claims (1)

A seasonal cooling device for thawing the enclosing soil, characterized by the presence of a thermal stabilizer and a thin-walled tube installed with steel clamps and a steel cylinder along the longitudinal surface of the thermal stabilizer, while on the end sections of the thin-walled tube there are connection valves for pumping the coolant into the thin-walled tube.

Images