RU187216U1 - HEAT PROTECTED UNIT FOR PIPELINE SYSTEM INPUT TO THE BUILDING - Google Patents

Abstract

The utility model relates to the construction, in particular, to the thermal insulation of the input node of the network pipeline into the building and is intended to prevent freezing of pipelines passing, in particular, through an unheated, ventilated basement or basement to the building, and to avoid violation of permafrost conditions under the building from laying of engineering networks. The technical result consists in increasing the heat-shielding properties, reliability and expanding the arsenal of technical means aimed at protecting the input nodes of pipeline systems in buildings operated, including in severe climatic conditions. In order to achieve a technical result, a heat-protected node for introducing a pipeline system into a building is proposed, comprising a network pipeline (1) with thermal insulation (2) in the passage of the enclosure (5). New is that the pipeline insulation is multilayer and contains additional intermediate (3) and outer (4) layers installed with the possibility of providing thermal control to preserve the integrity of the pipeline and the permafrost properties of soils under the building. At the same time, on the heat-insulating layer (2) of the pipeline (1), a winded flexible pipe (3) made of cross-linked polyethylene, forming a closed air gap, is installed, and an external thermal insulation (4), in particular, from polyurethane foam shells, is installed on the winding flexible pipe (3). 1 ill.

Description

The utility model relates to the construction, in particular, to thermal insulation of the input node of the network pipeline into the building and is intended to prevent freezing of pipelines passing, in particular, through an unheated, ventilated basement or basement to the building, and to exclude the violation of permafrost conditions under the building from laying of engineering networks. The utility model can be used in the design, manufacture and installation of new engineering pipeline systems, as well as in the reconstruction of existing heat and water supply and sanitation systems.

A prerequisite for creating a useful model is large-scale construction, including in regions with severe climatic conditions, as well as accidents - pipe cracks and ruptures that occur, as a rule, in the most vulnerable sections of engineering piping systems, and especially in places pipelines crossing the building envelope. The causes of accidents can be:

a) violation of the schedule of pressure drops at the input of the heating and water supply network into the building (actual pressures are less than required), which, in turn, leads to a decrease in the actual flow rate of the liquid, and, consequently, to a decrease in the speed of movement. At very low speeds, especially at small pipe diameters, and precisely small diameters are used at the entrance to buildings, there are foci of stagnation, stopping fluid movement, which causes ice formation, clogging of the inner diameter and, as a result, termination of circulation, defrosting, violation pipe wall integrity, i.e. gap, accident;

b) lowering the air temperature, while the external air temperatures for which the thermal insulation of the pipelines is designed, in accordance with [SP 131.13330.2012 Construction climatology], can differ greatly from the actual ones, which leads to emergency situations when the thermal insulation does not compensate for the transmission ( due to thermal conductivity) and infiltration (due to convection) the heat flux emitted by the surface of the pipes. On straight pipe sections, even small fluid velocities will save from defrosting, and on pipe inlets into a building where there are many local resistances (turning angles, diameter transitions, shutoff valves, etc.) low speeds can be critical and can lead to abnormalities emergency situations.

The prior art does not know technical solutions that could guarantee the integrity of the pipes at the entrance to the building through the building envelope and at the same time eliminate the violation of permafrost conditions under the building.

A device for sealing inserted into the hole of the construction of communications, made in the form of two outer plates, between which there is a sealing body made of elastic material, having an opening for accommodating communications, while the plates are interconnected by tightening elements, and also located on the outside of the sealing body an additional sealing ring made of a material that increases in volume upon contact with moisture, the sealing body having a recess for placing an additional sealing ring, and the outer edge of the additional sealing ring does not protrude above the outer surface of the sealing body (RF Patent No. 176320 U1, priority date 08/30/2017, publication date 1/17/2018, author: Karoli Rene, RU).

A heat-insulating product for pipes is known that contains a heat-insulating layer of insulating elements enclosed in a shell configured to cover the pipe around the entire circumference, while the heat-insulating layer is configured to cover part of the circumference of the insulated pipe (RF Patent No. 161698 U1, priority date 02/05/2016 , publication date 04/27/2016, author Bulanovich O.N., RU).

A device is known for passage of a pipeline through a building envelope, adopted as a prototype, comprising a steel sleeve inserted into an opening in the building envelope with a fixing flange made at one end and rigidly connected to the building envelope, the sleeve covers a pipeline with gaps between the building envelope and the pipeline filled with a packing of non-combustible mineral wool, while the sleeve consists of two semi-sleeves connected by welding, and the fixing flange is formed by a half-flange made in one piece with half shells, on the opposite end of the sleeve flange, covering it, there are two steel half-shells connected to the sleeve by welding and rigidly connected to the enclosing structure (RF Patent No. 157008 U1, priority date 02.25.2015, publication date 20.11 .2015, authors: Batin S.A. et al., RU, prototype).

Common disadvantages of the known devices and prototype are: firstly, their unreliability when working in low temperature conditions, when installed in regions with frozen soils, due to ineffective thermal insulation; secondly, high labor costs in the manufacture and dismantling of thermal insulation in case of damage.

The technical problem solved by the utility model is to create a design of a heat-protected unit for entering the pipeline network into the building, which is also used in harsh climatic conditions, which ensures the reliability and safety of pipeline systems and permafrost soil properties.

To solve a technical problem, a heat-proof node for introducing a pipeline system into a building is proposed, which contains a network pipeline with thermal insulation in the passage of the fence. New is that the pipeline insulation is multilayer and contains additional intermediate and outer layers to preserve the integrity of the pipeline and the permafrost properties of soils under the building. At the same time, a coiled flexible pipe made of cross-linked polyethylene, forming a closed air gap, is installed on the heat-insulating layer of the pipeline, and external thermal insulation is installed on the flexible pipe.

The implementation of the utility model allows to obtain the following technical result: increase of heat-shielding properties, reliability and expansion of the arsenal of technical means aimed at protecting the input nodes of pipeline systems in buildings, including those operating in severe climatic conditions.

The drawing schematically depicts a heatproof node input pipeline system into the building, General view.

The claimed heat-proof node for introducing the pipeline system into the building contains a network pipeline 1 with a heater 2, on which a coiled flexible pipe 3 made of cross-linked polyethylene is installed during installation, for example (http://www.gidroplast.ru/dictionary-truby/truby_iz_sshitogo_polietilena/, date of viewing 04/10/2018). In this case, the flexible pipe made of cross-linked polyethylene during installation is heated with hot air and wrap around the surface of the insulation 2 close to each other. Outside, thermal insulation 4 is installed on the flexible pipeline, in particular, from polyurethane shells, for example (http://polymerizol.ru/skorlupy-i-otvody/?utm_source=Google&utm_medium=poisk&utm_campaign=skorlupa2&utm_term=%7Bkeyword%7D&agolokcont .2018). A heat-protected piping system assembly containing multilayer and multifunctional thermal insulation is introduced into the building through the passage in the floor slab 5. At the same time, the coiled flexible pipe 3 made of cross-linked polyethylene forms a closed air gap that increases the thermal resistance of the pipeline insulation to preserve the integrity of the pipeline and permafrost properties soil under the building.

To speed up the production and high-quality manufacturing of the proposed insulation design, it is recommended that these units be manufactured in the factory. The passage in the plate 5 during installation of the node is filled with construction foam.

Thus, the proposed utility model can significantly reduce the complexity of installing a heat-proof assembly unit for introducing the pipeline system into the building through the use of heat-insulating elements of multilayer heat insulation of full factory readiness, as well as increase its reliability in harsh climatic conditions due to multilayer heat insulation.

Given these advantages, the utility model can be used both for scientific pre-project preparation with subsequent design and manufacture, and then for the installation of new engineering systems, and for the reconstruction of existing heat and water supply and sanitation systems, and, which is especially important, for capital repair of buildings in general.

Claims (1)

A heat-proof node for introducing a pipeline system into a building containing a network pipeline with thermal insulation in the passage of the fence, characterized in that the pipeline insulation is multilayer and contains additional intermediate and external layers to preserve the integrity of the pipeline and the permafrost properties of the soil under the building, while on the thermal insulation layer of the pipeline a coiled flexible conduit made of cross-linked polyethylene is installed, forming a closed air gap, and a bend is installed on the flexible conduit thermal insulation.

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