RU217764U1 - MODULAR DEVICE FOR THERMAL INSULATION OF PIPELINES - Google Patents

Abstract

The utility model relates to products and structures for thermal insulation of pipelines with positive and negative temperatures of the media flowing in them. The modular device for thermal insulation of pipelines consists of an open cylindrical sheet body. Along the edges, the body has bends at a right angle, against which an arcuate half-shaped part abuts on one side, and an arcuate counterpart part on the opposite side. The housing is opened by a longitudinal cut, which, due to the rigidity of the housing material, makes it possible to reveal the modular device. In the closed state of the modular device, the half part is detachably connected to the mating part by means of a thorn-groove system lock having a rounded shape. Also, in the closed state, the longitudinal section is overlapped in several places by outlets with slots formed by a notch in one of the bends. After mounting the modular device on the pipeline, the outlets through the slots are fixed with an overlap with the opposite edge of the housing using various fasteners. The use of the claimed modular device for thermal insulation of pipelines reduces the installation time and simplifies the process of thermal insulation of pipelines, as well as reduces the requirements for the qualification of maintenance personnel and increases the safety of installation work while ensuring high energy efficiency of heating networks. 2 w.p. f-ly, 4 ill.

Description

Field of technology to which the utility model belongs

The utility model relates to products and structures for thermal insulation of pipelines with positive and negative temperatures of the media flowing in them.

State of the art

Installation of thermal insulation elements on pipelines is carried out in several stages. After cleaning and preparing the surface of the pipelines, a heat-insulating layer is applied to them in the form of mineral wool mats, shells of expanded polystyrene or other similar materials, which are fixed on the pipes with knitting wire or polymer screeds. Then these materials are covered with a protective layer of galvanized or painted steel, polymer film, roofing material or foil and fixed to the pipes with self-tapping screws, rivets or bandages. The described technological process is quite long and laborious, its improper implementation leads to a decrease in the energy efficiency of thermal insulation, therefore it requires highly qualified personnel. In addition, prolonged contact with heat-insulating materials is associated with increased harmfulness and the need to use special means of protecting the respiratory, vision and skin. Therefore, many developers are trying to improve the described technological process by creating new devices for thermal insulation of pipelines.

Known for collapsible thermal insulation for underground and above-ground channelless laying of pipelines, characterized in that it is collapsible, while the annular space is filled with removable shells fastened with bandages, having two layers: internal - temperature-quenching and external, providing mechanical strength and additional heat - and moisture protection, and the integumentary shell freely moves over the shells (see application RU 2000106633 A, publ. 10.04.2002).

The disadvantage of this design is the presence of an additional movable integumentary shell, which complicates the installation, maintenance and repair of the described device.

A well-known node for thermal insulation of pipelines, containing a layer of thermal insulation material installed on parallel contiguous pipelines, fixed on the surface of pipes with a common outer sheath made of waterproof material, and fasteners made of wire or steel tape that fixes the sheath sheets on pipelines, characterized in that it is equipped with supports made from a wooden board, installed on the upper surface of the pipelines and bearing stops fixed on them for fastening the lower and side parts of the shell; at the same time, the upper surface of the supports, made of a gable, is connected to a rigid coating fixed on them, connected to the side parts of the shell, and the lower surface of the supports is connected to a dam made of rigid material placed between the pipelines (see application RU 2001131547 A, publ. 20.06.2003 g .).

The disadvantages of the described node is the complexity of the design of the fastening elements and the presence of wooden board supports, which reduce the performance of the node as a whole.

A heat-insulating structure is known, which is made collapsible, including removable shells fastened with bandages, characterized in that the removable shells are made in the form of segments of extruded polystyrene foam, which can be machined to give the desired shape of the shell, the segments are combined into a structure that forms a heat-insulating shell around the pipeline and consisting of N sectors interconnected in the diametrical direction into a lock, and the bandages are made in the form of tightening tapes, fixed with a tightening device equipped with a stopper (see patent RU 40433 U8, publ. 27.08.2005).

A well-known heat-insulating shell for pipelines that are not subjected to significant temporary and permanent loads, made collapsible and containing a set of N removable segments made of extruded foamed polymer material, interconnected into a ring by reciprocal protrusions and grooves along the ends of adjacent segments and tightened with bandages in the form of metal or polymeric tapes, the ends of each of which are placed in the corresponding clamping unit, characterized in that the segments are made of extruded expanded polystyrene foam, and the clamping unit of the bandages is made in the form of a locking fastener from two metal figured frames, pressed one to the other, between which the ends of the tapes are stretched ( see patent RU 97477 U1, published on September 10, 2010).

The disadvantages of the described designs are the complexity of mounting a set of N removable segments and the use of bandages. An incorrectly selected number of removable segments or their location leads to a violation of the thermal insulation properties. And the bandages used for fixation have a complex configuration and do not allow for reliable fixation for a long time.

Known for quick-detachable thermal insulation, which is a prefabricated structure of block elements made in the form of boxes covering the insulated object, fastened with adjustable latches, containing outer and inner metal casings, between which a heat-insulating layer is placed, and connected by the ends, and between the inner casing of the boxes and the heat-insulated object has a gap, characterized in that the boxes have a shape that repeats the configuration of the heat-insulated object, the uniformity of the gap is maintained by leaf springs located on the inner surface of the inner casing in a quantity and sequence determined based on the size of the object, at the junction of the ends of the boxes due to internal bends of casings, a layer of heat-insulating layer is formed along the entire length of the heat-insulated object, the outer metal casing of the upper box protrudes beyond its end in the form of an allowance with the formation of a visor, while vandal-proof latches are used (see Fig. patent RU 185258 U1, publ. November 28, 2018).

The described quick-release thermal insulation has low reliability, since it involves the use of springs and latches, elements with low reliability and complexity of maintenance and repair.

A heat-insulating device for a pipeline is known, containing a heat-insulating layer and a protective coating placed outside the heat-insulating layer, and the heat-insulating layer contains elements that limit its deformation under compressive loads, characterized in that the protective coating is made sectional along the length of the pipeline, while the protective coating is made corrugated ( see patent RU 192200 U1, published 09/06/2019).

The disadvantages of the described device is the complexity of its manufacture, as well as the high probability of collapse of the corrugated elements under lateral mechanical loads, which leads to a loss of thermal insulation properties.

A heat-insulating device for a pipeline is known, including a heat-insulating layer of an elastically deformable material, a two-part protective coating placed outside the heat-insulating layer and made corrugated sectionally along the length of the pipeline, supporting elements of the protective coating abutting against the pipeline, characterized in that each section of the protective coating contains three supporting elements, one of which is located in the upper part of the heat-insulating device, and the other two - on the sides of the heat-insulating device, each supporting element includes a flat support provided with U-shaped metal brackets resting against the pipeline, on which the protective coating is fixed, while the flat the support is placed longitudinally to the pipeline, and the U-shaped brackets are placed transversely to the pipeline, and the heat-insulating layer of the elastically deformable material is doubled in the upper part of the heat-insulating device (see patent RU 203702 U1, publ. 16.04.2021).

The disadvantages of the described device are the complexity of installation, the use of support elements of different configurations, which increases errors during installation and reduces the thermal insulation qualities of the structure as a whole.

A well-known analogue with the closest set of essential features and singled out by the author as a prototype is a quick-detachable heat-insulating product for thermal insulation of pipe fittings, characterized in that it includes detachably interconnected parts, each of which has a base in the form of an open heat-insulating shell reinforced with support-frame elements located inside the shell at its ends, made of heat-insulating material having greater rigidity compared to the shell material, and permanently connected to the shell. From the outside, the shells are covered with a protective layer of flexible material, which connects the parts of the product with the possibility of their rotation relative to each other (see patent RU 192070 U1, publ. 09/03/2019).

The reasons hindering the achievement of the technical result, which is provided by the claimed utility model, are the complexity of installation and low energy efficiency. These shortcomings are manifested in the low rigidity of the composite shell, which does not provide high mechanical strength and integrity during repeated assembly and disassembly of the product, as well as in the rectangular configuration of the tongue and groove locks, which break when the half and mating parts are separated not at right angles. thermal insulation of round pipelines.

The described prior art shows the need to develop a modular device for thermal insulation of pipelines that is easy to manufacture and install while maintaining high energy efficiency.

Disclosure of the essence of the utility model

The technical result achieved by the claimed utility model is to simplify the installation of a modular device for thermal insulation of pipelines while maintaining high energy efficiency.

The technical result is achieved using a modular device for thermal insulation of pipelines, containing an open cylindrical body, in the inner cavity of which there are arcuate half-shaped and mating heat-insulating parts, characterized in that the body is made of rigid sheet material and is open due to a longitudinal section, which on opposite sides has bends at a right angle and due to the rigidity of the body material allows you to open a modular device, and the ends are made with zig-grooves; characterized in that in the closed state of the modular device, the half part is detachably connected to the counterpart due to the lock of the "thorn-groove" system, having a rounded shape; characterized in that, in the closed state, the longitudinal section is blocked in several places by outlets with slots formed by a cutout in one of the bends, which, after mounting the modular device on the pipeline, overlap the opposite edge of the housing with the help of various fasteners.

The use of the proposed modular device for thermal insulation of pipelines provides quick, simple and safe for personnel installation when installing thermal insulation and dismantling when repairing its elements while maintaining high energy efficiency.

Brief description of the drawings

On FIG. 1 shows an isometric view of the proposed modular device for thermal insulation of pipelines assembled on a conventional pipeline.

On FIG. 2 shows the claimed modular device for thermal insulation of pipelines in the open state with the designation of parts and assemblies.

On FIG. 3 shows the docking of several similar claimed modular devices for thermal insulation of long pipelines.

On FIG. 4 shows a side view of a modular device for thermal insulation of pipelines.

On FIG. 1, 2, 3 and 4 are marked:

1 - body;

2 - bend;

3 - half part of the device;

4 - counterpart of the device;

5 - longitudinal section;

6 - lock of the "thorn-groove" system;

7 - outlets with slots;

8 - fasteners;

9 - butt;

10 - zig-deepenings.

Implementation of the utility model

The modular device for thermal insulation of pipelines consists of an open cylindrical sheet body 1. Along the edges of the body 1 has bends 2 at a right angle, which on the one hand abuts the arcuate half part 3, and on the opposite side - the arcuate counterpart 4. The body 1 is open due to the longitudinal cut 5, which, due to the rigidity of the material of the body 1, allows you to open the modular device. In the closed state of the modular device, the half part 3 is detachably connected to the counter part 4 by means of the lock 6 of the tongue and groove system, which has a rounded shape. Also, in the closed state, the longitudinal section 5 is overlapped in several places by outlets 7 with slots formed by a cutout in one of the bends 2. After mounting the modular device on the pipeline, the outlets 7 are fixed through the slots with an overlap with the opposite edge of the body 1 using various fasteners 8 (self-tapping screws , rivets, etc.). The bases of the half part 3 and the counterpart part 4 form ends 9 with zig-points 10 for docking with modular devices of similar design with a significant length of pipelines.

Housing 1 can be made of galvanized sheet metal or a flexible material similar in physical and mechanical properties.

Half 3 and mating 4 parts are made of heat-insulating material with high density (mineral wool, expanded polystyrene, etc.). The inner diameter of the half 3 and mating 4 parts corresponds to the diameters of the pipelines with which thermal insulation work is carried out.

As an option in the claimed device, which does not affect the inventive step, elements of the operational remote control system (ODC) of thermal insulation dampening can be installed.

Modular device for thermal insulation of pipelines works as follows. When carrying out heat-insulating work, an open body 1 is put on the prepared and cleaned pipeline through a longitudinal section 5 due to the rigidity of the sheet material. In this case, the bends 2 of the body 1 are brought together and fixed with fasteners 8 overlapping through the slots of the outlets 7. For thermal insulation of extended pipelines, an end 9 of a modular device similar in design is installed to the end 9 of the fixed modular device, and it can be cut to the required length. Zig-grooves 10 fasten the modular devices to each other and prevent them from spreading along the length of the pipeline.

Thus, the inventive modular device for thermal insulation of pipelines is tightly fixed on the pipeline and provides its thermal insulation and protection from mechanical influences. As necessary, with the help of elements of the operational remote control system (ODC), the moisture content of the thermal insulation is determined. If the pipelines are long, then the required number of the claimed modular devices is used, their ends 9 are docked with each other and trimmed to the required length.

When carrying out repair work on pipelines, replacing thermal insulation elements or their control, the claimed modular device is disassembled by removing fasteners 8 from outlets 7 and opening housing 1 and lock 6. If necessary, the modular device is removed from the pipeline through cut 5, pushing the housing 1 beyond due to the rigidity of its material.

Unlike the prototype, the claimed modular device for thermal insulation of pipelines has:

- a simpler design due to the absence of supporting frame elements and short-lived adhesive fastening tapes;

- an open cylindrical sheet body with bends, which gives higher structural rigidity during repeated assembly / dismantling, increases the degree of protection against external mechanical influences during operation and makes it easy to replace damaged heat-insulating elements during installation or repair;

- rounded shape of the lock of the "thorn-groove" system, which ensures a snug fit of the half and mating parts when the modular device is closed to minimize "cold bridges" and reduce heat loss, and also allows you to freely open the modular device without breaking the lock elements when they are located not under right angles to each other.

The use of the claimed modular device for thermal insulation of pipelines reduces the installation time and simplifies the process of thermal insulation of pipelines, as well as reduces the requirements for the qualification of maintenance personnel and increases the safety of installation work while ensuring high energy efficiency of heating networks.

Claims (3)

1. A modular device for thermal insulation of pipelines, containing an open cylindrical body, in the inner cavity of which there are arcuate half-shaped and mating heat-insulating parts, characterized in that the body is made of rigid sheet material and is open due to a longitudinal section, which on opposite sides has bends under a straight line. angle and due to the rigidity of the body material allows you to open a modular device, and the ends are made with zig-grooves. 2. Modular device for thermal insulation of pipelines according to claim 1, characterized in that in the closed state of the modular device, the half part is detachably connected to the counterpart due to the lock of the tongue and groove system, which has a rounded shape. 3. A modular device for thermal insulation of pipelines according to claim 1, characterized in that, in the closed state, the longitudinal section is blocked in several places by outlets with slots formed by a cutout in one of the bends, which, after mounting the modular device on the pipeline, overlap the opposite edge of the housing using various fasteners.

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