Method to repair pipeline, complex of equipment for realisation of method and its devices

FIELD: machine building.

SUBSTANCE: method to repair pipes dismantled in process of pipeline repair and accepted suitable for repeated use, is carried out on a route under basic conditions using a complex of equipment for repair of pipes, in connected mobile modules of which pipes are cleaned from old insulation, the external surface of the pipes is prepared for application of a coating, the external surface of the pipes is insulated by application of a protective coating, while heating the external surface of pipes to speed up the process of protective coating polymerisation. Pipes are moved to the place of storage, at the same time works are carried out in a general flow, for this purpose each pipe is based on two trolleys. Depending on the nature of technological operations, each pipe is given a rotary movement using reciprocal motion of trolleys along a rail track, besides, ends of pipes at the length of at least 150 mm are protected against application of a coating.

EFFECT: method expands the arsenal of technical facilities, increases efficiency of a process for coating application under route conditions onto pipes, also of large diametres due to automation and synchronisation of efficiency of processes for preparation of external pipe surfaces and application of an insulating coating onto them.

 

The invention relates to the construction of pipeline transport and is used in the repair of pipelines, as well as the repair of pipelines for different purposes.

According to the "Provisional instructions for the re-use of pipes in the overhaul of the linear parts of main gas pipelines", Gazprom, 2005, allowed the re-use of pipes, removed from the main gas pipelines with removing them from the trench and repaired. The tubes re-use must be isolated in accordance with the requirements of normative documents on corrosion protection of pipes for the overhaul of the linear parts of main gas pipelines.

It is known that the cleaning of pipes mechanically with the help of machines high performance at low cost. Production of insulation works on trubozagotovitelny bases in the presence of the pipeline is more favorable conditions than on the track. In addition, it is known that if between the cleaning pipe and coating on its surface an insulating coating is formed a gap in time in a few hours, then have to re-clean the surface of the pipe, because during this time, especially if precipitated rain, fog, dew or snow on the pipe there is a RAID RJ is whiny, preventing case the adhesion of the insulation material with the pipe body. Thus, there is a problem in the field of integrated automation of process pipe insulation from training their surface before applying the coating, and the problem of increasing the reliability of the outer protective coating of the pipeline by improving the protective properties of the coating of the pipe, eliminating development sub pellicle and stress-corrosion on the pipeline in a period of time comparable to the lifetime of the pipeline.

The prior art line PTL-2 (Catalog machines for the construction of pipelines, ed. 7, revised and expanded. M: "NEDRA", 1984, section 6, p.120), designed to remove the round metal brushes dirt, rust and loose scale from the outer surfaces of steel pipes and application of bitumen-rubber protective coatings or protective coatings from polymeric adhesive tapes. The disadvantages of line, you must include the fact that it is used in the basic conditions and cannot be applied coatings, as well as impossible qualitative preparation of the pipe surface under the paint application due to the lack of necessary mechanisms.

The known method of repairing the pipeline, which is implemented in the mobile insulating base 100-500, before aznacenni for pipe and pipe sections ("dubtronic") mastic, tape and combined materials.

The base is designed on a modular basis and consists of the drive uninsulated pipes, conveyor module drying tubes from moisture and ice, module, pipe cleaning, module, application smolney primer, module insulated coating and the drive insulated pipe (http://www.izolperm.ru/trubi/mid100500.html). The known solution is the closest to the claimed group of inventions.

The disadvantages of the known solutions need to be considered limited scope due to the lack of equipment for surface preparation of the pipe for applying coatings, as well as lack of equipment for applying such coatings.

The objective of the invention is to expand the Arsenal of technical means, i.e. the creation equipment to perform field method, containing operations prepare pipe surface under the paint application, and the application of paint on the outer surface of the pipe in the repair of pipelines.

Achievable technical result when implementing the claimed group of inventions is the creation equipment to perform field method, containing operations prepare pipe surface under the paint application, paint etc is s on the outer surface of the pipe in the repair of pipelines, as well as getting in route conditions of the coating with desired corrosion resistance and dielectric properties, high gasoline, atmosferoustojchivosti, abrasion resistance;

increase service life coverage is comparable to the lifetime of the new pipeline, improving the performance of the coating process in route conditions on the pipe, including large diameter (1200 mm and more) through automation and synchronization on the performance of the processes of preparing the outer surface of the pipe and application of an insulating coating.

This problem is solved by the method of repair of the pipeline, in which on the road, in basic conditions, using complex equipment for repair of pipes/pipe sections, dismantled pipes/pipe section clear of the old insulation, for example, pre-use metal brushes with subsequent finishing cleaning the outer surface of the pipe/pipe sections, for example, using a water jet installation of high pressure and drying the outer surface of the pipe/pipe sections, prepare the outer surface of the pipe/pipe sections under the coating, for example, shot blasting (shot blasting) processing, insulate the outer surface of the pipe/pipe sections by applying protective coatings, such as polyurethane, IU the Odom airless spray heated outer surface of the pipe/pipe sections to accelerate the polymerization process of the protective coating, move pipe/pipe section to the place of storage, cleaning, preparing the outer surface of the pipe/pipe sections and the application of a coating are in the United mobile modules in the General flow of what each tube/pipe section is based on two trucks, depending on the nature of technological operations of each tube/pipe sections give a rotary motion in the longitudinal translational movement of the trolleys along the track, and the ends of the pipes/pipe sections for a length not less than 150 mm protects from the coating.

In addition, the task is solved by a complex of the equipment for repair of pipes/pipe sections when the repair of the pipeline, made of interconnected mobile modules, containing, respectively, the equipment for cleaning and drying of pipes/pipe sections, preparing their outer surfaces under insulation coating, applying an insulating coating, and containing a power unit, a compressor, a system of forced removal of harmful substances such as dust, when cleaning pipes/pipe sections, drives uninsulated and insulated pipes/pipe sections, lifting means for moving pipes/pipe sections, in which the modules are used for transport the containers containing the sections of rails the path of the transport system for the movement of trucks, that are the basis for pipes/pipe section, and the specified equipment is placed in transport containers along/on the sides of the respective sections of rail track, and in the joined end walls of the transport container is made is supplied with insulating flanges technological window for the passage of trucks with pipes/pipe sections.

This task is solved by a mobile module that contains a transport container, in which the railway transport system, the end wall of the container is provided with elements fixation and mounting attachable mobile modules of the complex of the equipment for repair of pipes/pipe sections, and equipped with technological Windows for passage movable on rail transport trolleys with pipes/pipe sections, insulating flanges for process window, while along/on the sides of the track in the direction of pipes/pipe sections is appropriate technological equipment.

This task is solved by a transport truck that contains a frame, movable on rails, wheels, support rollers, drive for rotation placed on the support rollers with their ends of the pipe/pipe section, and the traction drive wheels, this cart is equipped with screens for protection of all TRU the tube sections from the coating over a length not less than 150 mm

These set of features to ensure high performance at low cost, reduce the gap in time between the cleaning pipe and coating on its outer surface coating, since the operations of the method are carried out in basic conditions, where streamlined production work on the pipeline, which in turn improves the quality of insulation.

The complex of the equipment for repair of pipes mounted on a prepared base near the place of storage of pipes/pipe sections (hereinafter, pipes), removed during the repair of the pipeline.

The complex of the equipment for repair of pipes contains a device for removing the old insulation (pre-treatment) pipe/pipe sections, for example, using a metal brush to finish cleaning the outer surface of the pipe (for example, using a water jet high pressure units), equipment for drying the outer surface of the pipe, equipment, training their outer surfaces for insulation coating, for example, shot blasting plant, equipment for applying insulation coating, equipment for heating the outer surface of the pipe after applying the coating, transport carts moving along a track, the unit, the compressor.

The criminal code is itia to protect process equipment from rain and inclement weather made in the form of mobile modules - transport, for example, shipping containers, each of which railway transport system, the end wall of each container is equipped with a fixation and mounting attachable mobile modules of the complex of the equipment for repair of pipes, and is also provided technological Windows for passage movable on rail transport trolleys with pipes and insulating flanges for process window, while along/on the sides of the track in the direction of travel of the pipe is required technological equipment.

The mechanism of rotation of pipes/pipe sections and the mechanism of longitudinal movement of the transport trucks are located on the transport trucks.

Equipment for removal of old insulation, cleaning, drying the outer surface of the pipe is placed in the processing block, representing depending on the length of the tube/pipe sections of the transport container/containers. Equipment for preparing the outer surface of the pipe under the coating and for applying to a coating placed in the processing block, representing depending on the length of the tube/pipe sections of the transport container/containers. While working areas of these blocks are separated by a protective flanges, and performed in a single thread when the post what annoy longitudinal speed of the repaired pipe.

In addition, there are area loading pipes on the transport truck and accumulation of transport trucks after unloading insulated pipe, the drive serviceable pipes and the drive-insulated heating pipes.

The complex of the equipment for repair of pipeline works as follows.

Two transport carts are served in the area under the loading of the repaired pipe. Includes a rotation mechanism laid on the trolley pipes and mechanism of longitudinal movement of trucks, these mechanisms are designed to regulate the speed of rotation and longitudinal movement of the pipe due to the performance of the equipment. The pipe is fed to the pre-cleaning of its outer surface from the old insulation and enters the area where the equipment for finish cleaning the final cleaning of the pipe surface from the primer. Then the trumpet comes in the area of equipment for drying the outer surface of the pipe from possible residual moisture and then the pipe goes into the process unit where the equipment for preparing the outer surface of the pipe under the coating with the necessary degree of surface preparation, for example, Sa 2½.

Then the trumpet comes in the painting Department - zone equipment for applying an insulating coating, which were the focus of his application, for example, using pistols-spray installation airless spray. At each end of the insulated pipe for a length not less than 150 mm protects from coating the screen, which is installed on each transport cart. Available from insulation pipe ends then used for welding and Assembly operations. To speed up the process of polymerization of the insulating coating equipment is used to heat the outer surface of the pipe. In this technological area where pipe insulation coating is applied, is isolated from the portion where the cleaning of pipes and, therefore, dusts removed by the system of forced removal of harmful discharge - suction installation.

Saythaliasana pipe on transport trucks rolled into the area, where it is shipped to the storage area of the finished tubes in the drive of the finished tubes.

Transport carts are accumulated in the accumulation zone from further moving in the loading area of the pipe. Transfer trucks is carried out, for example, transport by crane to the removal from the track or at the end of the regulated period of time (for example, twice a day) transport truck serves on the track in the opposite direction to suspend the operation of complex equipment.

The dimensions of the loading zone tramposos to place subject to repair pipes on transport trucks before as the previous processed pipe is fully seated in the pre-cleaning of its outer surface. This is necessary to ensure that the processed pipe could form a single stream with a minimum clearance between the ends of the tubes, while the equipment of the complex, sequentially processing the pipe runs in a single prescribed mode when processing the entire party prepared for the repair of pipes.

As the time interval between cleaning the pipe surface and a drawing of her isolation is extremely small, the result is a dense monolithic insulation that protects the pipe from corrosion and well perceiving mechanical uniformly distributed loads and concentrated in the form of bumps and Siderov load on the pipeline.

Because of the quality of execution of work on pipe insulation depend on the duration and continuity of the steel pipe, the insulation be tested in all stages of its implementation.

Systematic quality cleaning pipes and insulated coating allows you to set the correct mode of movement of the tubes on the conveyor and to provide greater productivity and high quality of work performed. Suitable for use tubes labeled with the subsequent registration document quality pipe.

That is they way complex equipment in field conditions at the place of storage tubes removed during the repair of the pipeline, makes it possible underlying conditions in a single mode to repair the insulation coating of pipes repaired pipeline.

The invention provides for the removal of old insulation, cleaning and preparing the outer surface of the pipe, apply a new coating on the outer surface of the pipe in route conditions. While retaining all the advantages of factory conditions repair of pipelines with automation of these operations, while ensuring high performance of repair work, the high mobility of the complex and small technological areas.

1. The method of repair of the pipeline, in which on the road, in basic conditions, using complex equipment for repair of pipes/pipe sections, dismantled pipes/pipe section clear of the old insulation, for example, pre-use metal brushes with subsequent finishing cleaning the outer surface of the pipe/pipe sections, for example, using a water jet installation of high pressure and drying the outer surface of the pipe/pipe sections, prepare the outer surface of the pipe/pipe sections under the coating, for example, shot blasting (shot blasting) processing, insulate exterior surfaces shall be of pipes/pipe sections by applying a protective cover, for example, polyurethane, airless spray heated outer surface of the pipe/pipe sections to accelerate the polymerization process of the protective coating, move pipes/pipe section to the place of storage, cleaning, preparing the outer surface of the pipe/pipe sections and applied to the insulating coating are in the United mobile modules in the General flow of what each tube/pipe section is based on two trucks, depending on the nature of technological operations of each tube/pipe sections give a rotary motion in the longitudinal translational movement of the trolleys along the track, and the ends of the pipes/pipe sections on length not less than 150 mm protects from the coating.

2. The complex of the equipment for repair of pipes/pipe sections when the repair of the pipeline, made of interconnected mobile modules, containing, respectively, the equipment for cleaning and drying of pipes/pipe sections, preparing their outer surfaces under insulation coating, applying an insulating coating, and containing a power unit, a compressor, a system of forced removal of harmful substances such as dust, when cleaning pipes/pipe sections, drives uninsulated and insulated pipes/pipe sections, protopad the roadways means for moving pipes/pipe sections, in which the modules are used casks, containing sections of rail transport system for the movement of trucks, which are based on pipe/pipe section, and the specified equipment is placed in transport containers along/on the sides of the respective sections of rail track, and in the joined end walls of shipping containers are made equipped with insulating flanges technological window for the passage of trucks with pipes/pipe sections.

3. Mobile module containing a transport container, in which the railway transport system, the end wall of the container is provided with elements fixation and mounting attachable mobile modules of the complex of the equipment for repair of pipes/pipe sections, and equipped with technological Windows for passage movable on rail transport trolleys with pipes/pipe sections, insulating flanges for process window, while along/on the sides of the track in the direction of pipes/pipe sections, is appropriate technological equipment.

4. Transport trolley containing a frame, movable on rails, wheels, support rollers, drive for rotation placed on the support rollers with their ends of the pipe/pipe section, is also driving the running wheels, when this transport trolley equipped with screens for protection of ends of pipes/pipe sections from the coating over a length not less than 150 mm



 

Same patents:

FIELD: construction.

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FIELD: machine building.

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FIELD: machine building.

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4 dwg

FIELD: machine building.

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13 cl, 8 dwg

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48 cl, 12 dwg

FIELD: machine building.

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6 cl, 3 dwg

FIELD: machine building.

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2 cl, 2 dwg

FIELD: machine building.

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11 cl

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9 cl, 5 dwg

FIELD: construction.

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EFFECT: expanded functional capabilities.

3 dwg

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