RU158316U1 - PIPELINE BANDAGE HEATED INSULATED - Google Patents

Abstract

1. The pipe brace is insulated, installed on the pipe in the place of installation of the pipe support, characterized in that it consists of two half shells, the inner surface of which the bandage covers the pipeline, and completely covering the shell half shells, which has two parts, each half shell consisting of a base made in the form of a half-shell, and fixed to the base along the inner diameter of at least three frames located transversely to the axis of the pipeline, while the interconnection is about the bases and frames of each half-shell forms at least two cells filled with foamed heat-insulating material, the frames are equipped with technological holes for filling the cells of the half-shells with foamed heat-insulating material, the outer edge of the frame is provided with tongues in the form of spikes for fastening over the half-shells of the casing having reciprocal half-holes of the holes and the parts of the casing are provided with eyes through which they are interconnected in pairs. 2. The bandage according to claim 1, characterized in that the thickness of the insulation of the bandage is not less than the thickness of the layer of the main thermal insulation of the pipeline. 3. The bandage according to claim 1, characterized in that the half shells and parts of the casing are connected through holes in the eyes using bolted connections. 4. The bandage according to claim 1, characterized in that a protective gasket is made between the bandage and the pipeline, made of rock sheet and secured to the pipeline with tie rods and brackets, and the dimensions of the protective gasket are interconnected with the values of the diameter of the pipeline

Description

The claimed utility model relates to the field of construction of underground and elevated pipelines and can be used for laying and reconstruction of pipelines in difficult geological conditions, for example, in permafrost, including in the presence of a slope of the terrain.

The protective shell is known from the prior art [copyright certificate for the invention SU 1149099 A1, publ. 04/07/1985, IPC: F16L 59/12, F16L 59/10], made primarily of aluminum for thermal insulation of pipes, having a protective cylindrical shell made of pipe halves with longitudinal sides bent outward at an angle of 90 ° with rectangular holes on one side and the bending petals entering them on the other hand. In order to increase reliability and reduce installation time, the width of the side is seven to eleven thicknesses of the sheath sheet, and the height of each bent blade is four thicknesses of the sheath sheet, and the holes in the sides are made in the center of their field.

The disadvantages of the known invention include the low strength characteristic of the base metal of the insulation casing - aluminum. With significant mechanical loads on the pipeline for sections of the underground installation, damage to the protective casing is possible and, as a result, damage to the thermal insulation layer and the anticorrosive coating of the pipeline.

The closest analogue of the claimed utility model is a prefabricated insulating structure [patent for invention RU 2229654 C2, publ. 05/27/2004, IPC: F16L 59/10], which is made in the form of sections covering the pipeline, forming a casing between themselves. Each section is made in the form of a box, consisting of an outer shell and an inner shell, which are interconnected by jumpers and locks. Locks are located on the outer shell. On the inner shell and the pipeline installed stops with the ability to control. Thermal insulation is placed between the outer shell and the inner shell. At the ends of the sections, protective screens are installed, which can be made perforated or in the form of a mesh.

A disadvantage of the known device is the complexity and complexity of installation, as well as the lack of the possibility of combining the multifaceted outer surface of the bandage with the lodgement cylindrical part of the pipe support.

The objective of the claimed utility model is to reduce the effects on the heat-insulating layer and the anticorrosive coating of the pipeline and its protection in the places of installation of the support elements of the support (lodges and half clamps) when moving the pipeline due to temperature deformations during operation.

The technical result of the claimed utility model is to unload the heat-insulating layer of the pipeline under the support of the loads arising from the operation of the pipeline.

The problem is solved, and the technical result is achieved due to the fact that the pipe brace insulated, installed on the pipe at the installation site of the pipe support, consists of two half-shells, the inner surface of which the bandage covers the pipeline, and completely covering the half-shell of the casing, having two parts, each half shell consists of a base made in the form of a half shell fixed to the base according to the inner diameter of at least three frames located at the bottom along the axis of the pipeline, while the interconnection of the base and frames of each half-shell forms at least two cells filled with foamed heat-insulating material, the frames are equipped with technological holes for filling the cells of the half-shell with foamed heat-insulating material, the outer edge of the frame is provided with protrusions in the form of studs for attaching over the half-shells having openings corresponding to the spikes, and half-shells and parts of the casing are equipped with eyes through which they are interconnected in pairs .

In addition, the thickness of the insulation of the bandage is not less than the thickness of the layer of the main thermal insulation of the pipeline.

Additionally, half shells and parts of the casing are connected through holes in the eyes with bolted connections.

In addition, a protective gasket made of rock sheet and fixed to the pipeline with tie rods and brackets is fixed between the bandage and the pipeline, and the dimensions of the protective gasket are interconnected with the values of the diameter of the pipeline and the structural length of the bandage.

Additionally, sling loops are installed on the outer part of the bandage.

The invention is illustrated by the following drawings:

In FIG. 1 presents a view of the claimed design of the brace of the pipe insulated.

In FIG. 2 presents a view of a suspended thermally insulated pipe support on a two-pile foundation with the claimed bandage design.

The positions in the drawings indicate:

1 - half shell;

2 - base;

3 - frame;

4 - technological holes;

5 - a casing;

6 - spike;

7 - protective cushioning material;

8 - bolted connection;

9 - holes of the casing;

10 - waterproofing shell of thermal insulation of the pipeline;

11 - lodgement;

12 - heat insulated bandage;

13 - half clamp;

14 - chain suspension;

15 - grillage;

16 - sling loops;

17 - supporting clutch.

The claimed utility model provides a reduction in the effects on the anticorrosive coating of the pipeline and its protection in the places where the support elements of the support (lodgements and half clamps) are installed when moving the pipeline due to temperature deformations during operation. The reduction of contact stresses on the pipeline (protective layer of the pipeline) from the loads perceived by the support is achieved by increasing the contact area of the bandage with the outer surface of the pipeline.

With underground pipeline laying, a case with pinching of the pipeline support in the ground is possible. Due to the rigid fixing of the pipeline and the bandage, the pipeline has the possibility of longitudinal (axial) movement in a pinched tool tray in a predetermined design range.

The heat-insulated pipeline brace consists of two half shells 1: the upper and the lower. Each half shell 1 consists of a base 2 made in the form of a half shell and fixed to the base along the inner diameter of at least three frames 3 located transversely to the axis of the pipeline. The frames 3 are designed to ensure the strength of the frame of the bandage in accordance with the design loads. The frames 3 are equipped with technological openings 4 for filling the cells of the half shell 1 with foamed heat-insulating material: openings for introducing heat-insulating material, opposed openings for venting excess heat-insulating material and openings for controlling the filling of the internal volume of the cells. The outer edge of the frame 3 is provided with protrusions in the form of spikes 6 for fastening over the half shell of the casing 5. To ensure a rigid connection with the pipeline in a horizontal plane along the interface line of the two half shells 1, a technological gap is made. The interconnection of the base 2 and the frames 3 of each half shell 1 forms at least two cells filled with foamed thermal insulation material. The thickness of the insulation of the bandage is not less than the thickness of the layer of the main thermal insulation of the pipeline.

On top of the half shell 1 is installed by means of a welded joint completely covering their casing 5, which has two parts. The casing 5 has a response to the spikes 6 of the frames of the hole 9. The half shells 1 and parts of the casing 5 are provided with eyes through which they are interconnected in pairs.

A protective cushioning material 7, a rock sheet, is mounted on the pipeline, which is fastened with tie rods and brackets in at least three places along the outer diameter of the pipeline. The lower and upper half shells 1 are mounted and tightened onto the fixed protective material 7, using bolted joints 8. A casing 5 is installed on the upper and lower half shells, which consists of two parts connected by a bolt connection through the eyes. To ensure loading and unloading during the manufacture and installation of the heat-insulated bandage 12 (Fig. 2), there are provided 16 sling loops located on the outer part of the bandage 12.

Depending on the operating conditions, a protective anticorrosive coating is applied to the brace assembly units. When operating the pipeline in aggressive, corrosive environments, the metal parts of the brace can be made of corrosion-resistant steels, while the corrosion tolerance for the estimated period of operation when determining the thicknesses of parts of structural elements can be reduced. Material design, coating of parts and brace elements are selected in accordance with the climatic zone of operation of the suspension supports.

For a detailed consideration of the construction of the utility model, an example of the construction of a heat-insulated pipe brace for a suspended pipe support on a two-pile foundation shown in FIG. 2.

When carrying out work on laying an underground pipeline, support structures are arranged taking into account the quality of the soil, its slope, etc. In place for the installation of support on the pipeline, protective gasket material 7 (rock sheet) is laid and fixed with tie straps. The dimensions of the protective strip 7 are selected depending on the diameter of the pipeline and the structural length of the band 12. The installation of the band 12 is made on the pipeline with a protective gasket. Orientation of half-shells 1 bandage - the surface of the connector bandage is located horizontally. The lower and upper half-shells 1 of the bandage are pulled together by bolt connection 8, the connection to the pipeline is rigid, the tightening torque is regulated in the technical documentation. Also, with the help of bolted joints 8, a protective cover 5 of the bandage is installed. Through technological openings 4, the cells of the half-shells 1 of the bandage are filled with foamed heat-insulating material with the release of its excess through the opposite openings.

Next, mounted on the pipe bandage 12 is a sequential installation of the lodgement 11 and the coupling half 13 of the support. The pipeline bottom part is supported through the bandage 12 on the cradle of the support 11, the upper part is limited to a half-clamp 13 with a technological gap. When installing the aerial part of the support, compensation sleeves are installed in the hole of the adjusting screw, into the holes of which the chain suspensions are installed with the fingers 14. The screws with chain suspensions are inserted into the holes of the base plates of the grill 15, the installation of support and spherical washers, nuts. With the help of lifting mechanisms, the grillage 15 is installed on the supporting parts of the supporting clutches 17, mounted on a pile foundation. Compensation sleeves are installed in the eyes of the tool tray 11 (mounted on the pipeline), then, with the help of fingers, flexible chain suspensions 14 are fixed through the holes of the compensation sleeves. The swivel joint of the flexible suspension 14 with the eye of the lodgement of the support allows you to mount the support under the pipeline with a slope of up to 30 °. By successive tightening of the nuts, the chain hangers 14 are smoothly tensioned, the bearings are aligned to the design position, followed by locking the tensioning nuts. At the end of the installation, excavation work is carried out with filling the soil.

Regular changes in the temperature of the transported working medium, vibrations, changes in pressure inside the pipeline — all this causes constant, often significant (up to 100-200 mm) displacements of the pipeline, if it is incompletely crushed by the ground, which are perceived by the support, or rather, its moving part, in As a result, the movable part, together with the rigidly fixed pipeline in it, is displaced. The lodgement moves in the soil, connected on chain suspensions. The bandage in the structure performs a protective function, and also distributes the contact load from the support cradle on the surface of the bandage. In cases of crushing of the underground part of the support in the ground (support lodgement), the pipeline in the bandage can longitudinally move along the inner surface of the lodgement, thereby the possible longitudinal movement of the bandage in the lodgement will not damage the pipeline.

The result is the unloading of the heat-insulating layer of the pipeline under support from the loads arising from the operation of the pipeline, the transfer of loads to the support through frames and longitudinal stiffeners.

Claims (5)

1. The pipe brace is insulated, installed on the pipe in the place of installation of the pipe support, characterized in that it consists of two half shells, the inner surface of which the bandage covers the pipeline, and completely covering the shell half shells, which has two parts, each half shell consisting of a base made in the form of a half-shell, and fixed to the base along the inner diameter of at least three frames located transversely to the axis of the pipeline, while the interconnection is about the bases and frames of each half-shell forms at least two cells filled with foamed heat-insulating material, the frames are equipped with technological holes for filling the cells of the half-shells with foamed heat-insulating material, the outer edge of the frame is provided with tongues in the form of spikes for fastening over the half-shells of the casing having reciprocal half-holes of the holes and parts of the casing are provided with eyes through which they are interconnected in pairs. 2. The bandage according to claim 1, characterized in that the thickness of the insulation of the bandage is not less than the thickness of the layer of the main thermal insulation of the pipeline. 3. The bandage according to claim 1, characterized in that the half shells and parts of the casing are connected through holes in the eyes using bolted connections. 4. The bandage according to claim 1, characterized in that a protective gasket is made between the bandage and the pipeline, made of rock sheet and secured to the pipeline with tie straps and brackets, and the dimensions of the protective gasket are interconnected with the values of the diameter of the pipeline and the structural length of the bandage. 5. The bandage according to claim 1, characterized in that the hinges are installed on the outer part of the bandage.

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