RU2430287C1 - Over ground pipeline of increased reliability - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: pipeline is assembled on regulated supports with device whereon pipes lay. The supports are connected to a foundation plate positioned without embedding on a levelled base with a sliding layer. In spans between supports the pipeline is additionally equipped with trussed poles; while on the supports it is equipped with damping devices in form of removable structures secured to the pipeline by means of yokes with pads. A truss pole is formed with four metal trusses arranged along the pipeline and preliminary stressed by means of screw braces in the middle of a span in mutually perpendicular directions relative to axis of the pipeline. Also, ends of four stressed metal trusses are fixed with yokes arranged on the pipeline between the spans. The screw braces with their one end are attached to a yoke in the middle of a span, while with their other end they are attached to stressed metal truss.

EFFECT: raised reliability of over ground pipelines operation, their protection from wind loads and prevention of wind vibrations.

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Description

The invention relates to the field of design, construction and operation of an elevated trunk pipeline laid in areas of permafrost, heaving, subsidence soils and in seismic zones.

Known above-ground trunk pipeline, mounted in difficult ground conditions using adjustable supports designed for welding and installation works, and the adjustable support is made in the form of a single solid block, including foundation and foundation parts, the foundation part is made in the form of a slab platform with an upper rib arrangement and the possibility of placing welding equipment between the two supports of the foundation part, each of which is made in the form of a gantry type construction of four bearing metal rod elements with a set of holes in height for bolts, interconnected in pairs at an angle in the middle part using a transverse traverse and using connecting elements in the lower and upper parts of the structure, forming a device for laying pipes (utility model patent No. 60669 U1, priority date 07/13/2006, publication date 1/27/2007, authors Abovsky N.P., Sapkalov V.I., Romanov A.P. RU).

A disadvantage of the known design of an elevated pipeline is its low reliability due to the inability to prevent fluctuations in the pipeline from the action of wind loads.

Known above-ground trunk pipeline, equipped with an automatic tracking device for the stress-strain state of above-ground trunk pipelines laid in difficult soil conditions and in seismic zones, adopted as a prototype, containing adjustable supports of the above-ground pipeline, combined with a foundation plate installed without deepening the edges on top aligned base with a sliding layer, while the adjustable support is made in the form of a gantry type structure formed one of the inclined rod-bearing metal elements with a set of holes in height for bolts, pairwise interconnected and forming a device for laying the pipeline, while dangerous measuring sections of the pipeline are equipped with optical measuring devices for automatic tracking of the stress-strain state of the pipeline, and the supports are installed actuators of the mentioned system in the form of lifting devices (utility model patent No. 53008 U1, priority date 10/28/2005, publication date 4/27/2006, auto s Abovskii NP, Sapkalov VI, Romanov AP, RU, prototype).

The disadvantage of the prototype is the lack of protection during operation of the pipelines from the action of wind loads, which have negative effects on the main pipelines and reduce the reliability of their work.

The objective of the invention is to increase the reliability of operation of elevated pipelines by protecting them from the action of wind loads and preventing wind vibrations by installing truss and shock-absorbing devices on the pipeline.

According to the invention, it is additionally equipped with spreader devices in the spans between the supports, and on the supports it is equipped with shock-absorbing devices to solve the problem, an elevated pipeline of increased reliability, containing adjustable supports with a support for pipes, combined with a foundation plate installed without being buried on a leveled base with a sliding layer. made in the form of removable structures fixed to the pipeline using clamps with gaskets, truss device image It is made of four metal trusses located along the pipeline and pre-tensioned by means of screw braces in the middle of the span in mutually perpendicular directions with respect to the axis of the pipeline, while the ends of the four pre-strained metal trusses are fixed on the mentioned clamps installed on the pipeline between the supports, and the screw braces are fixed one end on the clamp in the middle of the span, and the other end with a taut metal spreel, the shock-absorbing device is made in the form of control GIH damping elements fastened by one end on the yoke mounted on a pipeline at the point of bearing and the other end connected to the opposite sides from the support elements.

Figure 1 schematically shows an elevated pipeline of increased reliability, a General view; figure 2 is the same, a top view; figure 3 is a section aa in figure 1; figure 4 is a section bB in figure 1.

The overhead pipeline of increased reliability contains adjustable supports 1, combined with a reinforced concrete foundation plate 2, installed upside down without deepening on a leveled base with a sliding layer 3. The base part of the adjustable support is made in the form of a gantry type of inclined rod bearing metal elements 4 with a set of holes for regulating the height of the elevated pipeline 5. Inclined rod-bearing metal elements 4 are interconnected in pairs in her and the upper parts and form a device 6 for supporting pipes. In the lower part, rod-bearing metal elements 4 are attached to a reinforced concrete foundation plate 2.

To protect against the action of wind loads and prevent wind vibrations, the overhead pipeline 5 is equipped with spreader devices 7 in the spans between the supports, and on the supports it is equipped with damping devices 8 made in the form of removable devices fixed to the pipeline 5 with clamps with gaskets. The specified wind-shelter devices can be installed locally depending on the operating conditions and the identification of sections of the elevated pipeline that are most exposed to wind.

The spreader device 7 is formed of four metal spreaders 9 located along the pipeline, prestressed by means of screw extensions 10 in the middle of the span in mutually perpendicular directions with respect to the axis of the pipeline. At the same time, the ends of the four pre-stressed metal trusses 9 are fixed on the clamps 11 mounted on the pipeline between the supports, and the screw extensions 10 are fixed at one end on the clamp 12 mounted on the pipeline in the middle of the span, and the other end with a tensioned metal truss 9.

The shock-absorbing device 8 is made in the form of two elastic damping elements 13, for example, springs installed at the level of the pipeline axis on opposite sides of it. In this case, the springs are fixed at one end to the clamp 14 mounted on the pipeline, in the place of its support, and the other end connected to the elements 15 of the support.

The mounting of the truss and shock absorbing devices is carried out by installing clamps 11, 12 and 14 on the pipeline using gaskets 16. Depending on the operating conditions, two clamps 11 are installed on the pipe between the supports of the overhead pipeline, and a clamp 12 is installed in the middle of the span. To the specified clamps fasten four pre-stressed metal truss 9 along the pipeline. The metal spreaders 9 are prestressed by means of screw extensions 10 with a double-sided clutch installed on the clamp 12. Clamps 14 with elastic damping elements 13 fixed on opposite sides are mounted on the pipe, in the place of its support, and the free ends of the elastic damping elements 13 are connected to the connecting elements 15 piers.

Thus, improving the reliability of the operation of elevated pipelines, their protection from the effects of wind fluctuations and the cessation of their impact on the elevated pipelines is carried out by installing truss and shock absorbing devices. In general, these devices make it possible to ensure prestressing of the pipeline in risky areas, tighten the structure, change the shape and frequency of natural vibrations, and prevent negative effects. These devices are removable, installed in hazardous wind zones in the process of monitoring the operation of elevated pipelines.

Claims (1)

An overhead pipeline of increased reliability, containing adjustable supports with a device for supporting pipes, combined with a foundation plate installed without burial on a leveled base with a sliding layer, characterized in that it is additionally equipped with spreader devices in the spans between the supports, and equipped with shock absorbers on the supports, made in the form of removable structures fixed to the pipeline using clamps with gaskets, the truss device is formed of four metal x sprengels located along the pipeline and pre-tensioned by means of screw braces in the middle of the span in mutually perpendicular directions with respect to the axis of the pipeline, while the ends of four pre-tensioned metal brackets are fixed on the mentioned clamps installed on the pipeline between the supports, and screw braces are fixed by one end on a clamp in the middle of the span, and at the other end with a taut metal spreel, the shock-absorbing device is made in the form of elastic damping elements, s fixed at one end on a clamp mounted on the pipeline, in the place of its support, and the other end connected on opposite sides with support elements.

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