RU2613703C1 - Polyme rpipeline lifting support - Google Patents

Abstract

FIELD: transportation.

SUBSTANCE: polymer pipeline lifting support is made as hollow thin-walled body with a rectangular base, inclined trapezoidal side walls and upper support surface of a saddle shape comprising technological holes. In a central part the support comprises an internal cavity with an open rectangular-shaped top formed by the inner walls and the bottom, positioned on a level with the base, and side inner and outer walls are made in the form of a subdivided stepped structure.

EFFECT: increase of the strength and stability during the mounting on a pipe support, lightweight design, providing simplicity, convenience and reliability in use, efficiency and reliability in storage and transportation.

22 cl, 4 dwg

Description

The invention relates to support devices designed to support pipelines when installing them in a trench, and may find application in laying or repairing sections of trunk pipelines, in particular gas pipelines.

Known support pipe (application RU No. 2013126213, IPC F16L 1/06, publ. 12/20/2014, PCT application: CA 2011/050456 from 07/26/2011), containing the outer supporting wall, mainly of a tubular shape, having a lower part for fixing on the surface and the upper support pipe; an internal abutment wall that extends inward from the outer abutment wall and is generally in the shape of a truncated cone, with a lower part for fixing to the surface and supporting the pipeline upper part; and a connecting portion for maintaining the outer supporting wall and the inner supporting wall in a fixed, spaced apart from one another mutual position.

The disadvantages of this support are the technological complexity of the manufacturing process and the low safety factor in relation to emergency (dynamic, shear) loads, and the ability to deform and collapse when shear forces occur.

Known inventory support (patent No. 152935, IPC E04G 25/00, publ. 06/27/2015), made in the form of a hollow thin-walled body of polymer material with a side surface in the form of a body of revolution tapering upward, truncated in its upper part by a cylindrical surface, the radius of which not less than the radius of the pipeline pipe laid on it, forming the upper cylindrical supporting surface with alternating supporting surfaces of radially arranged stiffeners and combining them with a centrally located portion of the cylindrical surface, wherein the edge disposed in a plane perpendicular to the longitudinal axis of laying pipes configured elliptical shape in the longitudinal vertical plane of its cross section and is associated with a centrally arranged cylindrical bearing surface portion.

Known inventory support (patent No. 152725, IPC E04G 25/00, publ. 06/10/2015), the closest in technical essence and adopted for the prototype, made in the form of a hollow thin-walled body of polymer material with a side surface in the shape of a pyramid tapering upward, truncated in its upper part with a cylindrical surface, the radius of which is not less than the radius of the pipeline pipe laid on it, forming the upper cylindrical supporting surface, divided into symmetrical parts located concave along its generatrix in the direction of the base the pores with a through rib and ribs located in the plane perpendicular to it and concave inward of the support, and the longitudinal axes of the first of the said ribs and second ribs do not lie in the same plane.

However, the above devices do not have sufficient strength and reliability during installation and operation of the pipeline, their transportation, and are also technologically complex, have high labor costs and manufacturing costs.

The above analogues have a greater number of positions for stacking, but without position marks on the supports themselves, a shift may occur when stacking them in a pile, which will lead to the destruction of the supports when installing the pipeline on them.

The inventive support when typing in a stack has two positions. The first position is stacking: due to the conical shape of the support of the product, they fit tightly into one another, ensuring maximum use of space during transportation by transport. The second position - climb, allows you to (multiply) increase the height of the stack from the supports, which ensures ease of alignment of the pipeline when laying over rough terrain, convenience and accuracy when installing the supports on top of each other, as well as simplifying the design. Climbing is necessary to install the pipeline in a higher position.

The problem to which the invention is directed, is to create a support for the pipeline, which has a technologically simple design, is convenient to use, while having increased strength and reliability, stiffness and wear resistance, increasing its service life.

The technical result achieved by using the invention is to increase the strength and stability when installing a pipeline on it.

The declared support is a multiple of the dimensions of standard transport pallets, which provides convenience in logistics.

Compared with analogues, the design of the claimed support has the following advantages:

- increased strength characteristics;

- lightweight construction;

- ease of manufacture;

- simplicity, convenience and reliability in operation: during installation / dismantling of the pipeline, conducting its inspection and repair work;

- convenience, efficiency and reliability during storage and transportation.

Also, the claimed device provides a high margin of stability with respect to possible emergency, including increased dynamic, shear loads.

This device is shown in the drawings.

in FIG. 1 shows a top view of the device;

in FIG. 2 shows a bottom view of the device;

in FIG. 3 shows the folding of supports onto each other when stacking;

in FIG. Figure 4 shows the stacking (installation) of supports on top of each other for climb.

The inventive device is a stand used in the manufacture of repair or installation work with long cylindrical structures.

The device consists of the following components:

1 - external lateral surface formed from four external walls;

2 - inner side surface formed from four inner walls;

3 - the upper supporting (saddle) surface receiving the load from the pipeline;

4 - the contact surface with the soil, formed by the horizontal base of the outer surface and the base of the inner cavity;

5 - ribs (steps) for installation on top of the support when stacking;

6 - ribs (steps) for building support in height;

7 - technological holes on the supporting saddle surface;

8 - technological holes on the outer side surface;

9 - technological holes for attaching the support to an additional base (if the soil is soft);

10 - technological holes to adapt the automatic layout of the stack;

11 - drainage holes for draining water.

Technological holes 7 can also play the role of drains if the support will be stored upside down.

The proposed support has a trapezoidal shape, made in the form of a hollow thin-walled body with a rectangular base, inclined lateral trapezoidal walls and an upper supporting surface 3, the radius of which is not less than the radius of the pipe placed on it.

The supporting surface 3 has a concave saddle shape with a radius of concavity (rounding), determined from the condition of clearance-free mating with the surface of the pipeline, which eliminates the displacement of the support from its mounting position.

In its central part, the support contains an internal cavity with an open top of a rectangular shape formed by internal walls and a base (bottom) located at the same level with the base of the external walls for installation on the ground.

The inner cavity is made on the basis of a rectangular body and is longitudinally oriented respectively along the longitudinal side of the support.

Opposite end edges of the saddle bearing surface 3 protrude upward and are rounded.

The lateral external and internal walls are made in the form of a branched step structure, which gives additional strength and stability to the support, and also allows for reliable and accurate fixation when installing the supports on top of each other in two versions: stacking and height increase.

Stacking supports on each other allows you to save space during their storage and transportation.

Height increase is necessary in cases when additional support is given to the support when installing the pipeline on it.

The stepped wall structure is a combination of steps having two height levels.

The steps of the first lower level are designed for stacking during transportation.

The second level is more than twice as high as the first and is designed to increase the stack of supports in the working position.

The stepped structure is formed by trapezoidal recesses in cross section from the side of the outer surface of the support. The stepped structure has a trapezoidal shape in cross section, and a slope from the central part of the support in the longitudinal direction.

The number of steps of the first stacking level: four on one longitudinal side, three on the other longitudinal side, and two on each end side on the outer side surface of 1 support.

The number of steps of the second stacking level: four - on one longitudinal side, three - on the other opposite longitudinal side, three - on the end sides.

The number of steps of the first level of the inner side surface 2 of the support: three - on the one hand, two - on the other.

The number of steps of the second level of the inner side surface 2 of the support: three - on one longitudinal side, two - on the other, and the steps are staggered in relation to the steps of the first level.

The outer walls of the support form a rectangular base with rounded corners protruding beyond the outer walls of the support.

The ground contact surface 4 is formed by the rectangular base of the outer walls and the bottom of the inner cavity.

The supporting surface 3 in contact with the pipe is perforated, i.e. contains oval cuts (technological holes 7), designed to prevent corrosion during contact of the pipe with the ground.

Technological openings 7, 8, 11 facilitate the design and play the role of drains, so that during storage and transportation of supports in an inverted state, water does not accumulate in them.

The inventive support has a developed system of rib-amplifiers, including stepped ribs and additional stiffeners, which gives the support additional strength to support the pipeline.

The outer side surface 1 contains additional stiffening ribs having the form of triangular plates oriented vertically and located on the outer side surface 1.

Additional stiffening ribs are located on the entire outer lateral surface 1, the lower base adjacent to the protruding base of the outer walls, while they are grouped into four groups of four ribs in each.

Larger additional stiffening ribs are located in the upper part on the end walls of the outer side surface 1 in an amount of four on each end side.

In the upper part of each longitudinal side of the outer side surface 1 are two equally spaced engagement elements (holes) for securing the support on the lower part of the pipeline section when used in deep trenches (without lowering people into them).

The supporting surface 3 from its opposite (inner) side contains vertically arranged longitudinal and transverse additional stiffeners located mutually perpendicular to each other (crosswise).

On the base (bottom) of the internal cavity, two longitudinal elongated rectangular holes with rounded corners are arranged consecutively. These holes are drainage, i.e. designed to discharge rainfall and groundwater.

The same holes can also be used to automatically disassemble stacked supports.

On the rectangular base and the base of the inner cavity, circular holes are provided for attaching the support to the additional lower support.

The support provides safety during installation and operation of the loaded pipeline both in the trench and outside it, which allows to extend the life of the pipeline.

The support is made of a polymer material that is resistant to the external environment and is neutral with respect to it. As such material, polyethylene or polypropylene, as well as compounds based on them, can be used.

The shape of the support in the form of a double volume allows you to effectively tolerate extreme loads when the support is on compacted or natural soil. In the case of use (installation) of the support on soft ground, this form allows you to distribute the load evenly.

In addition to being used as a stable, durable support for pipelines laid in rocky trenches, the support can also be used on the surface as a temporary support for the pipeline during installation and repair work.

When used as a single or multi-level support, supports are installed based on two supports (support groups) per pipe segment.

The support is light enough to be able to work with it manually, yet tight enough so as not to “float” to the surface.

When digging deeper trenches, the supports are fixed on the lower part of the pipeline until it is installed on the bottom of the trench.

The support further comprises through technological holes 8 located on the end faces of the external and / or internal walls and intended for manual carrying and securing the support to the pipe using straps or ropes.

The support can be used as an effective tool for an uninsulated (unprotected) pipeline during and after excavation, while limiting the requirements for compacted soil under the pipeline.

Installation of support in the trench.

Install each of the supports along the trench at the required distance.

Place the installation cables (for example, aluminum 2 × 4 in length).

Install the supports using the installation cable to arrange the central parts of the supports in a line.

Place a pipeline on them, observing the centering of the supports.

When used in deeper trenches, the support before installation is fixed with a cable on the lower part of the pipeline section (using a polymer cable) with fixing holes located on the sides of the support.

Installation of supports outside the trench.

Polymer bearings are delivered when folded.

For laying the supports, they are placed approximately one stack of supports at each end of the pipeline.

Extra height can be achieved by stacking the supports.

In order to install support on a height-increasing level, the second must be turned 1/2 turn or 180 degrees from the center.

For regions with loose or moist soil, additional support may be required directly on the ground in the form of a plywood sheet. In this case, the supports are fixed to the additional support through the holes with nails for easy removal later.

To achieve additional stability when used as a long-term support, it is proposed to fix the support on the pipe using a cable (polymer rope).

The shape of the support is a thin-walled shell made in the form of a double volume, reinforced with stiffeners. This design allows you to withstand sufficiently high static and dynamic loads from the pipeline, eliminates its deformation and destruction.

The support is made of a polymeric material by injection molding using injection molds or by pneumatic vacuum molding.

It is allowed to stack supports on each other in the working position of not more than six pieces.

The inventive device meets the requirements of industrial applicability and can be manufactured on standard equipment using modern materials and technologies.

Claims (25)

1. The polymer support for the pipeline, made in the form of a hollow thin-walled body with a rectangular base, inclined lateral trapezoidal walls and the upper supporting surface of the saddle shape containing technological holes, characterized in that contains in its central part an internal cavity with an open top of a rectangular shape formed by internal walls and a bottom located at the same level with the base, and the lateral external and internal walls are made in the form of a branched step structure. 2. The polymer support according to claim 1, characterized in that the branched step structure is a combination of steps having two height levels. 3. The polymer support according to claim 1, characterized in that the holes on the upper supporting surface are oval, grouped in rows and oriented longitudinally along the longest side of the support. 4. The polymer support according to claim 1, characterized in that the corners of the rectangular base are rounded. 5. The polymer support according to claim 1, characterized in that the supporting surface on the back side contains vertical longitudinal and transverse stiffeners, 6. The polymer support according to claim 5, characterized in that the stiffeners are arranged perpendicular to each other or crosswise. 7. The polymer support according to claim 1, characterized in that the outer side surface contains additional stiffening ribs having the form of triangular plates oriented vertically and located on the outer side surface. 8. The polymer support according to claim 7, characterized in that the additional stiffening ribs are located on the entire outer lateral surface, the lower base adjacent to the protruding base of the outer walls, while they are grouped into groups of several ribs in each, located on each of the four sides. 9. The polymer support according to claim 7, characterized in that the additional stiffening ribs are located in the upper part of the end walls of the outer side surface, in an amount of four on each side. 10. The polymer support according to claim 1, characterized in that, on the basis of the inner cavity, two longitudinal elongated rectangular openings are arranged successively adjacent to each other with rounded edges. 11. The polymer support according to claim 1, characterized in that the inner cavity with its longitudinal part is oriented respectively along the longitudinal side of the support. 12. The polymer support according to claim 2, characterized in that the number of steps of the first stacking level is four on one longitudinal side, three on the other longitudinal side, and two on each end side on the outer side surface of the support. 13. The polymer support according to claim 2, characterized in that the number of steps of the second stacking level is four on one longitudinal side, three on the other opposite longitudinal side, three on the end sides. 14. The polymer support according to claim 2, characterized in that the number of steps of the first level on the inner side surface is three on the one hand, two on the other. 15. The polymer support according to claim 2, characterized in that the number of steps of the second level of the inner side surface of the support is three on one longitudinal side, two on the other, and arranged in a checkerboard pattern relative to the steps of the first level. 16. The polymer support according to claim 1, characterized in that the opposite end edges of the saddle bearing surface protrude upward and are rounded. 17. The polymer support according to claim 1, characterized in that in the upper part of each longitudinal side of the outer side surface are two equally spaced apart elements of engagement with the pipeline. 18. The polymer support according to claim 1, characterized in that it further comprises through holes located on the end faces of the external and / or internal walls for manually carrying and attaching the support to the pipe using a strap tape or rope. 19. The polymer support according to claim 1, characterized in that on the rectangular base and the base of the inner cavity there are round holes for attaching the support to an additional lower support. 20. The polymer support according to claim 1, characterized in that rectangular holes are made at the bottom of the inner cavity to accommodate automatic stacking. 21. The polymer support according to claim 1, characterized in that drainage holes for draining water are made over the entire contact surface with the soil. 22. The polymer support according to claim 1, characterized in that it is made of a polymer based on polyethylene or polypropylene or compounds based on them.

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