RU167760U1 - PIPELINE BANDAGE - Google Patents

Abstract

The 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 pipeline brace installed on the pipeline at the installation site of the pipeline support consists of the upper and lower half shells with at least two pairs of eyes for connecting the half shells to each other. The bandage is configured to mate with the base for laying the lower half shell made in the form of a lodgement with eyes for connecting with the half clamp for fixing the upper half shell, and at least three frames are attached to the base along the outer diameter of the lodgement. Each eye of the half shells, lodgement and half clamp is equipped with two reinforcing scarves and a compensation plate. In the horizontal plane along the interface line of the half-shells, a technological gap is made. A protective gasket made in the form of a rock sheet is fixed between the bandage and the pipeline. The result is a reduction in the loads perceived by the pipeline from the supports arising from the operation of the pipeline. 5 cp f-ly, 2 ill.

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 prior art protective shell [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 equal to 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 anticorrosion coating of the pipeline, the protective casing and, as a result, damage to the thermal insulation layer are possible.

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.

The disadvantage of the closest analogue is the complexity and complexity of installation, as well as the lack of the ability to combine the multifaceted outer surface of the bandage in the cylindrical part of the lodgement of the pipeline support.

The objective of the claimed utility model is to increase the reliability of the pipeline by reducing contact stresses on the pipeline.

The technical result of the claimed utility model is to reduce the impact on the anticorrosive coating of the pipeline at the points of installation of the support elements of the support (lodgement) during longitudinal (axial) movement of the pipeline due to temperature deformations during operation by preventing direct contact of the metal parts of the support (lodgement) with anticorrosive coating the pipeline when moving the pipeline at temperature deformations.

The problem is solved, and the technical result is achieved due to the fact that the pipe bandage installed on the pipeline at the installation site of the pipeline support consists of upper and lower half shells with at least two pairs of eyes for connecting the half shells to each other and is configured to interface with the base for laying the lower half-shell made in the form of a lodgement with eyes for connecting with a half-clamp for fixing the upper half-shell, with each eye of a half-shell, lodgement and half The uta is equipped with at least two reinforcing scarves and a compensation plate, a technological gap is made in the horizontal plane along the interface line of the half shells, and a protective gasket is fixed between the bandage and the pipeline.

In addition, the upper and lower half shells and the lodgement with a half clamp are pairwise connected to each other by means of a bolted connection.

Additionally, the protective gasket, which is a rock sheet, is fixed on the pipeline with tie rods and brackets. The dimensions of the protective strip are in relation to the values of the diameter of the pipeline and the structural length of the bandage.

In addition, sling loops are installed on the outside of the brace.

The inventive utility model is illustrated by the following drawings:

in FIG. 1 presents a view of the claimed design of the pipe brace,

in FIG. 2 presents a view of the suspension support of the pipeline on a two-pile foundation with the claimed design of the bandage.

The positions in the drawings indicate:

1 - half shell;

2 - reinforcing scarf;

3 - compensation plate;

4 - a bolt;

5 - a nut;

6 - washer;

7 - an eye;

8 - frame;

9 - the lodgement of the support;

10 - bandage

11 - a protective laying;

12 - half clamp support;

13 - chain flexible suspension;

14 - sling loop;

15 - grillage.

The bandage 10 of the pipeline (Fig. 1) consists of two half shells 1: the upper and lower, with at least two pairs of eyes 7 for connecting the half shells 1 to each other. To ensure a rigid connection with the pipeline in a horizontal plane along the interface line of the half shells 1, a technological gap is made.

The bandage 10 is made with the possibility of pairing with the base for laying the lower half-shell, made in the form of a lodgement 9 with eyes for connecting with the half-clamp 12 for fixing the upper half-shell, which reduces the load on the pipeline by creating a radius contact of the bandage with the surface of the pipeline and thereby increasing the contact bandage area with pipeline surface. At least three frames 8 are attached to the base according to the inner diameter. The upper and lower half shells 1 and the lodgement 9 with the half clamp 12 are connected in pairs to each other by means of a bolted connection.

Each eye 7 of the half shell, lodgement and half clamp is equipped with at least two reinforcing scarves 2 and a compensation plate 3, providing the necessary load distribution when tightening the bolt connection, including the bolt 4, two nuts 5 and two washers 6, which ensures that the band 10 does not slip on the anti-corrosion pipeline surface during longitudinal movement of the pipeline. To ensure loading and unloading during the manufacture and installation of the bandage 10, there are sling loops 14 located on the outer part of the bandage 10.

The bandage 10 is installed on the pipeline at the installation site of the pipeline support, in the center of the support. To protect the anticorrosive coating of the pipeline during installation of the bandage 10, as well as during further operation, a protective strip 11, which is a rock sheet, is laid and fixed on the pipeline with tie rods and brackets. The dimensions of the protective gasket are selected depending on the diameter of the pipeline and the structural length of the bandage.

Half shells 1 of the bandage 10 are oriented so that the surface of the connector of the bandage is parallel to the ground level.

Half shells 1 are pulled together by a bolt joint. The connection to the pipeline is rigid, the tightening torque of the bolted connection is regulated in accordance with regulatory requirements. At the end of the installation, if necessary, external insulation of the bandage and support elements is carried out, as well as docking with thermal insulation of the main pipeline.

A protective anti-corrosion coating is applied to the assembly parts of the bandage in the factory. When operating the pipeline in aggressive corrosive environments, the metal parts of the bandage and bolt joints 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 design of the utility model, an example of the construction of the pipe brace for the suspension support of the pipeline 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, the protective gasket 11 is laid and secured with tie rods 11. The dimensions of the protective gasket 11 are selected depending on the diameter of the pipeline and the structural length of the bandage. Orientation of the half-shell bandage - the surface of the connector bandage is in a horizontal plane. Half shells 1 are pulled together by a bolt connection, the connection to the pipeline is rigid, the tightening torque is regulated in the technical documentation. Next, a sequential installation of the lodgement 9 and the coupling half 12 of the support is made. The pipeline bottom part is supported through the bandage 10 on the cradle 9, the upper part is limited to a half-clamp 12 with a technological gap that provides compensation for the deviation of the bandage along the radius.

The movable part of the support (band 10 with a lodgement 9) is connected to the fixed part (grill 15) using a flexible chain suspension 13. The hinged connection of the suspension with the bracket of the lodgement provides the installation of the lodgement of the support under the pipeline with a longitudinal slope of up to 30 °. Adjusting screws install the lodgement of the support under the pipeline to the design position. 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, which are perceived by the support, or rather, its moving part, as a result of which the moving part is rigidly the pipeline fixed in it is shifted. The lodgement moves in the soil, connected on chain suspensions. When underground laying the pipeline, a case with pinching of the lodgement 9 of the pipeline support in the ground is possible. Due to the rigid fastening of the pipeline and the bandage 10, the pipeline has the possibility of longitudinal (axial) movement in the clamped lodgement 9 in a predetermined design range, while moving only contact between the metal bandage 10 and the metal lodgement 9.

The bandage 10 in the structure performs a protective function by preventing direct contact of the metal parts of the support (lodgement) with the anticorrosive coating of the pipeline during longitudinal (axial) movement of the pipeline during temperature deformations, and also distributes the contact loads from the lodgement 9 of the support on the surface of the bandage.

Thus, the claimed utility model provides a reduction in the effects on the anticorrosive coating of the pipeline and their protection in the places where the support elements of the support (lodgements and half clamps) are installed during longitudinal (axial) movement of the pipeline due to temperature deformations during operation, while also reducing contact stresses on the protective coating of the pipeline from loads by increasing the contact area of the bandage with the outer surface of the pipeline.

Claims (6)

1. The pipeline brace installed on the pipeline at the installation site of the pipe support, characterized in that it consists of an upper and lower half-shells with at least two pairs of eyes for connecting the half-shells to each other, and is configured to interface with the base for laying the lower half-shells, made in the form of a lodgement with eyes for connection with a half clamp for fixing the upper half shell, with each eye of a half shell, lodgement and half clamp equipped with at least two reinforcing braids nkami and compensating plate in the horizontal plane poluskorlup conjugation technological gap line is formed, and the protective pad is fixed between the shroud and the duct. 2. The pipeline brace according to claim 1, characterized in that the upper and lower half shells and lodgement with a half clamp are pairwise connected to each other by means of a bolted connection. 3. The pipeline brace according to claim 1, characterized in that the protective gasket is fixed to the pipeline with tie rods and brackets. 4. The pipeline brace according to claim 1, characterized in that the dimensions of the protective gasket are interconnected with the values of the diameter of the pipeline and the structural length of the brace. 5. The pipeline brace according to claim 1, characterized in that the protective gasket is a rock sheet. 6. The bandage of the pipeline according to claim 1, characterized in that on the outer part of the bandage sling loops are installed.

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