RU51164U1 - DEVICE FOR APPLYING TAPE INSULATION COATING TO PIPELINE - Google Patents

Abstract

The utility model relates to the field of construction and repair of oil pipelines, oil pipelines, gas pipelines. The proposed device for applying a tape insulation coating to the pipeline consists of a detachable rotary rotor with three identical winding heads (spools), two of which are fixed rolls with the original insulation material, including insulation tape and release agent, and on the third a roll with a wrapper and a drive are fixed a stator with an electric drive, including an electric motor, gearbox, chain transmission, pinion and gear wheels. All three spools are kinematically connected to the electric drive, and the drive stator is connected to a split rotary rotor by means of rods located on the gear wheel. Three guide rollers are installed on the detachable rotary rotor for orientation of the insulation tapes and protective wrapper, and spring-loaded rotary drive rollers with metal discs having pointed edges are installed on the front flange of the rotary rotor and spring-loaded rubber-coated rotary driven rollers are installed on the rear flange, all of which driving and driven rollers are made in contact with the insulated pipeline and are installed under the fragile to the axis of the pipeline. Supporting rollers are installed on the drive stator, made interacting with the pipeline, and two release mechanisms of the release agent are placed on the detachable rotary rotor. Each of the three spools contains a shaft, on the cylindrical surface of which the clips are installed - the first and second, with the possibility of free rotation around its axis, and on the surfaces of the clips made in contact with the mandrel of the roll of insulating material or wrapper, there are ribs, each of the clips being connected with the corresponding coupling half, each of which is equipped with a friction element and is fixed from rotation around its axis. In addition, the first coupling half is fixed from axial movement by two spring-loaded latches, and the second coupling half is located on the other end of the bobbin shaft and mounted with the possibility of axial movement limited by the position of the flywheel hub mounted on the neck of the bobbin shaft on the thread. Each of the winding mechanisms consists of a bracket, two hubs for installing a receiving mandrel, as well as a belt drive, including a belt, a first pulley mounted on one of the guide rollers, a second pulley mounted on one of the hubs, and a third (tension) pulley providing belt tension, with each winding mechanism placed between the flanges of the detachable rotary rotor at an angle to the longitudinal axis of the pipeline and parallel to the axis of the corresponding roll with insulating material. Using the proposed utility model allows: 1. To ensure high-quality insulating work on straight sections of the pipeline with an elevation angle of not more than 15 degrees to the horizon and on curved sections with an internal radius of at least 35 m. 2. To ensure the application of an increased thickness of insulation coating to the pipeline according to the scheme "2 + 1" (2 layers of insulation and 1 layer of wrapper). 3. Ensure the high quality of the insulation coating by increasing the degree of adhesion to the pipeline by ensuring uniformity of the thickness of the primer. 4. To increase the reliability of the installation by ensuring the reliable operation of the anti-adhesive winding assembly.

Description

The utility model relates to the field of construction, repair and operation of oil pipelines, oil pipelines, gas pipelines.

Various designs of devices for applying a tape insulation coating to a pipeline are known. Such devices include, for example, an OMP type machine (OM 321 P, MIT 820.00.000, MIAD 820.00.000, UI 820, as well as manual insulation machines of the type 3575.00.000).

These machines have low productivity, high complexity and low operational reliability of the insulation coating.

The closest solution to the claimed solution is the known design of the device for applying tape insulation coating to the pipeline according to the certificate of the Russian Federation for utility model N 13684, F 16 L 58/02, 59/14, 12.11.1999.

This options device consists of a detachable rotary rotor and a drive carriage (drive stator) with an electric drive, including an electric motor, gearbox, chain gear, chain and gear wheels.

On a split rotary rotor there are two winding heads (spools), on which:

on the first spool a roll is fixed with the original insulating material, including insulating tape and release agent,

a roll with a protective wrapper is fixed on the second spool.

On the detachable rotary rotor, guide rollers are placed to orient the insulation tape and the protective wrapper, spring-loaded rotary drive rollers with

metal disks having sharpened edges, and spring-loaded rubberized rotary driven rollers are installed on the rear flange, and all rollers are made in contact with the pipeline.

The drive carriage (drive stator) is equipped with support rollers made of metal disks with pointed edges mounted on a rubber sleeve mounted on the front flange of the split rotary rotor and made interacting with the pipeline, while the drive carriage is connected to the split rotary rotor by means of rods located on gear wheel.

On a detachable rotary rotor there is also a release mechanism for a release agent made in the form of a spring-loaded rotary frame with a mandrel attachment unit from the used roll, as well as a drive of the mandrel attachment unit made in the form of two rubber rollers in contact with each other and with the pipeline and made with a gear ratio providing constant tension force of the release agent, while the winding mechanism is placed under the fragility to the longitudinal axis of the pipeline and parallel to the axis of the roll with insulating material.

Such a device, although it allows to apply various rolled materials with high productivity to the pipeline, however, some design features make it difficult to use it in a number of applications.

Firstly, this device provides insulation of the pipeline according to the "1 + 1" scheme (one layer of insulation and one layer of a wrapper), which excludes the use of this device where it is required to apply insulation of increased thickness according to the "2 + 1" scheme (two layers of insulation and one layer of wrapper).

Secondly, the direct contact of the rubber roller of the drive mechanism of the release mechanism of the release agent with the surface of the pipeline coated with a primer causes it to slip, which in turn leads to uneven removal of the release layer from the roll of insulating material.

Thirdly, due to the direct contact of this roller with the primer, the integrity of the primer layer on the pipeline is impaired, which leads to a deterioration in the adhesion of the insulating material to the surface of the pipeline.

The task to which the claimed utility model is directed is to significantly increase the efficiency of pipeline protection by improving the quality of the insulation coating, as well as by increasing the reliability of the insulation machine and expanding the range of its use.

This problem is solved using the technical result from the use of the proposed utility model, which consists in expanding the arsenal of existing technical equipment for a certain purpose, which allows, firstly, to ensure the coating of increased thickness according to the "2 + 1" scheme (two layers of insulation and one layer of wrapper ), secondly, to ensure the high quality of the insulating coating by ensuring a primer uniform in thickness by eliminating its destruction during the coating process and, thirdly, to ensure reliable the operation of the release unit of the release agent by eliminating uneven operation of its drive.

This result is achieved by the fact that in the known device for applying a tape insulation coating to a pipeline, consisting of a detachable rotary rotor with two identical winding heads (spools), on one of which a roll with

initial insulating material, including insulating tape and release agent, and on the other a roll with a protective wrapper is fixed, and a drive stator with an electric drive, including an electric motor, gearbox, chain gear, sprockets and gear wheels, the drive stator is connected to a split rotary rotor via rods located on a gear wheel, on a detachable swivel rotor near each spool parallel to it there are two guide rollers for orienting the insulation tape and the protective wrapper, in addition to in the afternoon, spring-loaded rotary drive rollers with metal disks having pointed edges are mounted on a flange of a detachable rotor rotor, and spring-loaded rubber-mounted rotary driven rollers are installed on the rear flange, and all drive and driven rollers are made in contact with an insulated pipeline and installed at an angle to the axis of the pipeline, providing rolling detachable rotary rotor around the pipeline along a helical line while simultaneously providing translational movement of the entire installation along the pipe axis on the drive stator mounted bearing rollers formed communicating with the conduit, at releasable rotatable rotor placed as release agent winding mechanism,

The following improvements are additionally made:

firstly, a third spool is additionally introduced, on which a second roll with initial insulating material is fixed, placed on a split rotary rotor parallel to the first two spools, all three spools being uniformly spaced around the circumference of the rotor,

secondly, on a detachable rotary rotor near the third spool, a third guide roller is installed parallel to it to orient the second insulating tape,

thirdly, each of the three spools contains a shaft on a cylindrical

the surfaces of which the clips are installed - the first and second, with the possibility of free rotation around its axis, and on the surfaces of the clips made in contact with the mandrel of the roll of insulating material or wrapper, there are ribs, each of the clips is connected to a corresponding coupling half, each of which is equipped with a friction element, in addition, the landing holes of the coupling halves have a rectangular cross-section, and the corresponding neck of the spool shaft - diametrically opposite flats on both sides, so that the floor couplings are fixed from rotation around their axis, in addition, the first coupling half is fixed from axial movement by two spring-loaded latches, and the second coupling coupling is located on the other end of the bobbin shaft and mounted with the possibility of axial movement limited by the position of the hub of the flywheel, mounted on the neck of the bobbin shaft on the thread,

at the same time, each spool is mounted on a detachable rotary rotor housing on two racks mounted on brackets located on the inner surfaces of the flanges of the detachable rotary rotor housing, the neck of the spool shaft enters the outer rack eye and is fixed with a hinged plate and a hinged bolt with a wing nut, and an eye one of the racks is included in a square groove on the neck of the spool shaft, which ensures the shaft is fixed from rotation and from moving in the axial direction,

fourthly, on a detachable rotary rotor near the third spool, there is additionally placed a second antiadgeEiv winding mechanism identical to the first, each of the winding mechanisms being made in the form of a spring-loaded rotary frame with a receiving mandrel mounting unit, consisting of an arm and two hubs, and a mounting unit belt drive mandrel including belt, first pulley fixed

on the guide roller, second pulley. Mounted on one of the hubs, and a third (tension) pulley, which provides belt tension, each winding mechanism is placed between the flanges of the split rotary rotor at an angle to the longitudinal axis of the pipeline and parallel to the axis of the corresponding roll with insulating material.

The introduction of additional nodes and elements, as well as the special implementation of existing nodes, can significantly increase the performance of insulating work in route conditions, as well as increase the efficiency of pipeline protection by improving the quality of the insulation coating.

The inventive device provides the ability to apply multilayer roll of insulating materials, for example, type tape LITKOR, on the outer surface of pipelines with a diameter of 1220 mm during repair without stopping the pumping of products.

The insulation tape is applied to the pipeline by tightening it and rolling it on rollers over the entire surface, and the pipeline is insulated according to the “2 + 1” scheme (two layers of insulation and one layer of wrap).

The proposed utility model is illustrated by drawings, in which:

- figure 1 shows a General view of the inventive device for applying tape insulation coating to the pipeline;

- figure 2 shows a right view of the inventive device for showing the cross section of a detachable rotary rotor;

- figure 3 shows a typical design of the spool for installing a roll of insulating tape or a roll of wrapper;

- Figure 4 shows a side view along arrow A of the spool (Figure 3);

- figure 5 shows a typical diagram of the mounting spool on a detachable rotary rotor;

- figure 6 shows the mechanism of winding release agent;

- Fig.7 shows a diagram of the application of insulating materials and wrappers on the pipeline, as well as winding release agent.

The inventive device for applying a tape insulation coating on a pipeline (see Figure 1) contains:

detachable rotary rotor 1 with three winding heads (spools) on which on the first 2 and second 3 spools (see Fig. 2,7) rolls 4 are fixed with the original insulating material (for example, a multilayer tape of the LITKOR type), including insulating tape 5 and release agent 6, and on the third spool 7, a roll 8 is fixed with a wrapper 9 (for example, a plastic film without mastic), and with three guide rollers 10 to orient the two insulating tapes 5 and the wrapper 9,

a drive stator 11 (see FIG. 1) with an electric drive mounted on it, including an electric motor 12, a coupling (not shown), a gearbox 13, a chain gear 14, a pin chain 15 and a gear 16 of the wheel, connected to a split rotary rotor 1 by means of rods 17 located on the gear wheel 16.

In addition, on a detachable rotary rotor 1, spring-loaded rotary drive rollers 18 with metal discs having pointed edges are mounted on its front flange, and spring-loaded rubber-driven rotary drive rollers 19 are installed on the rear flange, all rollers being in contact with the pipe 20 and installed at an angle to the axis of the pipeline 20, providing a run-in of a split rotary rotor 1 around the pipeline 20 along a helical line and at the same time providing translational movement of the entire installation in along the axis of the pipeline 20.

Supporting rollers 21 are installed on the drive stator 11, made interacting with the pipeline 20.

Management of the installation is carried out using a remote control 22, located on a retractable occasion (bar) 23.

On the detachable rotary rotor 1 there are also two identical winding mechanisms 24 of the release agent 6, each of which is made (see FIG. 6) in the form of a spring-loaded rotary frame 25 with a mounting bracket for the receiving mandrel 26, consisting of an arm 27 and two hubs 28, and a belt the drive of the mounting unit of the mandrel 26, including the belt 29, the first pulley 30, mounted on the guide roller 10, the second pulley 31, mounted on one of the hubs 28, and the third (tension) pulley 32, providing tension to the belt 29.

The hubs 28 of the winding mechanism provide reliable fastening and bringing into rotation of the receiving mandrel 26 (which is used as the mandrel from the used roll 4 or 8), which is wound release agent 6. Each hub 28 is active and its surface in contact with the receiving mandrel 26 has ribs (not shown in the drawing). During the movement of the split rotary rotor 1, the hub 28 is driven by the above-described belt drive with a gear ratio providing a constant tension force of the release agent 6.

In addition, each winding mechanism 24 is placed between the front and rear flanges of the split rotary rotor 1 under the angle to the longitudinal axis of the pipe 20 and parallel to the axis of the corresponding roll 4 with insulating material (see Figure 1).

The detachable rotary rotor 1 (see Figure 2) is made of two parts interconnected by a hinge 33 and covering an insulated pipe 20 along the cylinder generatrix.

All three spools 2, 3, 7, designed to install two rolls 4 with the original insulating material and roll 8 with a wrapper 9, have the same following construction.

Each spool 2 (3, 7) (see Figure 3) contains a shaft 34, on

the cylindrical surface of which clips are installed - the first 35 and second 36, with the possibility of free rotation around its axis.

Between these clips 35, 36, either a roll 4 of insulating material or a roll 8 with a wrapper 9 is installed.

To improve adhesion to the mandrel 26 of the roll 4 (8), ribs 37 are made on the surfaces of the cages 35, 36 in contact with the specified mandrel 26 of the roll 4 (8).

Each of the clips - the first 35 and second 36 is connected to its coupling half - the first 38 and second 39, respectively, each of which is equipped with a friction element 40.

At the same time, the landing holes of the coupling halves 38.39 have a rectangular cross-section, and the corresponding neck of the shaft 34 of the spool 2 (3,7) are diametrically opposite flats on both sides, so that the coupling halves 38, 39 are fixed against rotation around their axis.

The first coupling half 38 is fixed from axial movement by two spring-loaded latches 41 (see Figure 4).

The second coupling half 39, located at the other end of the shaft 34 of the spool, is mounted with significant axial movement, which is limited by the position of the hub of the flywheel 42, mounted on the neck of the shaft 34 of the spool 2 (3, 7) on the thread.

Thanks to this design of the spool 2 (3, 7), it is possible to install rolls 4 (8) of various widths, as well as the ability to change the tension of the insulation tape when laying it on the pipe 20 due to a change in the friction force in the friction pairs of the coupling halves 38, 39.

Each spool 2 (3, 7) is installed on the housing 43 (see FIG. 2) of the detachable rotary rotor 1 on two posts 44 mounted on brackets 45 (see FIG. 5) located on the inner surfaces of the flanges 46 of the housing 43.

The shaft neck 34 of the spool 2 (3, 7) enters the outer eye 47

racks 44 and is fixed by a hinged lining 48 and a hinged bolt 49 with a wing nut 50. In this case, the eye 47 of one of the racks 44 enters a square groove on the neck of the shaft 34 of the spool 2 (3, 7), which ensures that the shaft 34 is secured against rotation and movement in the axial direction.

Three guide rollers 10 (see Figure 2, 7), used to orient the elements of the insulating material and the wrapper, rotate each around its axis on two rolling bearings (not shown). In this case, the axes of the guide rollers 10 are attached to the inner eyes 51 (see Fig. 5) of the struts 44 for fastening the spools 2 (3, 7).

The inventive device for applying tape insulation coating to the pipeline is operated as follows:

Before starting insulation work, a detachable rotary rotor 1 and a drive stator 11 are installed on the pipeline section 20 selected for repair. In addition, for normal installation operation, the distance from the bottom of the trench to the lower generatrix of the pipe 21 should be at least 500 mm.

After that, the split rotary rotor 1 and the gear 16 are centered so as to provide a uniform clearance between the pipe 20 and the housing 43 of the split rotary rotor 1, between the gear 16 and the pipe 20, as well as to ensure normal engagement of the gear 16 and the pinion 15 .

The rotary drive rollers 18 on the front flange and the rotary driven rollers 19 on the rear flange of the detachable rotary rotor 1 are set at an angle of about 8 degrees. to the longitudinal axis of the pipe 20 to provide the required overlap of insulating materials.

The horizontal movement of the split rotary rotor 1 per revolution is set less than the width of the wound

insulating tape 5 and therefore the tape is laid on the pipe 20 with the necessary overlap.

Then, the spools 2, 3, 7 are removed from the detachable rotor rotor 1 and rolls 4 with insulating material are placed on the spools 2, 3, and the roll 8 with a wrapper 9 on the spool 7, after which the spools 2, 3, 7 are again mounted on the detachable rotor rotor 1. In this case, the spool 2 is installed at the location of the first winding mechanism 24 of the release agent 6.

After that, in the winding mechanism 24, a receiving mandrel 26 is mounted and secured from the used roll 4 or 8.

Then, at the beginning of the roll 4 web, the insulation tape 5 is separated from the release agent 6. The start of the insulation tape 5 is pulled along the guide roller 10 and fixed to the outer surface of the pipe 20 with the adhesive layer applied on the insulation tape 5 on one side, and the start of the release adhesive 6 is moved around the outer surface of the roll 4 and is fixed on the outer surface of the mandrel 26 of the winding mechanism 24.

After that, the electric drive is turned on and the detachable rotary rotor 1 is rotated by 120 degrees, after which the spool 3 with the second roll 4 of insulating material is similarly installed at the location of the second winding mechanism 24 of the release agent 6, in which, as in the first, they are installed and securing the receiving mandrel 26 from the used roll 4 or 8.

Then, with the help of the electric drive, the detachable rotary rotor 1 is rotated another 120 degrees. After that, the electric drive is turned off and the third spool 7 with a protective wrapper 9 is mounted on the detachable rotary rotor 1.

During the subsequent supply of power to the electric motor 12, rotation from it is transmitted through a coupling (not shown in the drawing), a gearbox 13, a chain gear 14 and a pinion gear 15 to the gear

the wheel 16, and through the rods 17 to a detachable rotary rotor 1, which, with the help of rotary driving rollers 18 and rotary driven rollers 19, is moved along the pipeline 20 along a helical line, and the drive stator 11 on the support rollers 21 is moved along the pipeline 20 along its longitudinal axis.

When the rotary rotary rotor 1 is rotated, the rolls 4 installed on the spools 2, 3, 7 roll 4 with insulating material and the roll 8 with a wrapper 9. At the same time, two insulation tapes 5 and a protective wrapper 9 are wound from rolls 4, 8, pass along the guide rollers 10 and wound one after another on the pipe 20 along a helical line, and the release agent 6 is wound on the mandrel 26 of the winding mechanisms 24.

Thus, the application of insulation tape 5 from two rolls 4, and a protective wrapper 9 from roll 8 to the pipe 20, as well as winding the release agent 6 on the mandrel 26 of the winding mechanism 24 is carried out due to the rotational-translational movement of the split rotary rotor 1 with spools 2, 3 , 7 along the “endless” pipeline 20.

In this case, the rotary drive rollers 18, the metal disks of which have a pointed edge, provide the movement of the split rotary rotor 1 without slipping relative to the pipe 20, which provides the required overlap of the insulating tape 5 (25 ... 30 mm), and rubberized rotary driven rollers 19, located on the rear flange of the detachable rotary rotor 1, the insulation tape is rolled to the pipe 20 over the entire surface, including the overlap and the weld, which provides higher adhesion insulation tape to the pipe 20.

The insulating tape 5 and the protective wrapper 9 are laid on the pipeline 20 without corrugations, which is ensured by installing the spools 2, 3, 7 on a detachable rotary rotor 1 at an angle relative to the longitudinal

the axis of the pipeline 20, and the overlap value is set by turning the rotary drive rollers 18 and the rotary driven rollers 19.

The condition for tight adhesion of the insulating tape 5 over the entire protected surface of the pipeline 20 and creating tightness in the overlap is, firstly, the constant tension of the insulating tape 5 and the protective wrap 9 over their entire width, which is ensured by friction pairs of the coupling halves 38, 39 of the spool 2, 3, 7, and, secondly, rolling the insulating tape 5 and the protective wrapper 9 over their entire surface to the pipeline 20 with rubberized rotary driven rollers 19, which, in turn, ensures operational reliability applied to plumbing 20 isolation.

The ratio of the width of the rotary driven rollers 19, the pitch of the helix and the number of rotary driven rollers 19, interacting with the insulation tape 5, are selected from the condition of ensuring reliable rolling of the insulation tape 5 with a wrapper 9 over their entire surface.

At the end of the winding of all the insulation tape 5 that is available on the spools 2, 3, 7 and the protective wrapper 9, the spools 2, 3, 7 are removed, and additional spools with other rolls with insulation material previously placed on them are installed on the split rotary rotor 1 and protective wrap.

In addition, from the winding mechanism 24 remove the mandrel 26 with the release agent 6 wound thereon and install another mandrel 26 from the used roll 4 or 8 into the winding mechanism 24, after which the process of applying the insulation coating to the pipeline 20 is repeated.

The operation of the installation is controlled by the operator remotely from the edge of the trench using a retractable rod 23 with a control panel 22.

Using the proposed utility model allows you to:

1. To ensure high-quality insulating work on straight sections of the pipeline with a fragile rise of not more than 15 degrees to the horizon and in curved sections with an internal radius of at least 35 m.

2. To ensure the application of an insulating coating of increased thickness to the pipeline according to the "2 + 1" scheme (two layers of insulation and one layer of wrapper).

3. Ensure the high quality of the insulation coating by increasing the degree of adhesion to the pipeline by ensuring uniformity of the thickness of the primer.

4. To increase the reliability of the installation by ensuring the reliable operation of the anti-adhesive winding assembly.

Claims (1)

A device for applying a tape insulating coating to a pipeline, consisting of a detachable rotary rotor with two identical winding heads (spools), on one of which a roll with the original insulation material, including the first insulation tape and release agent, is fixed, and on the other a roll with a protective wrapper is fixed, and a drive stator with an electric drive, including an electric motor, gearbox, chain gear, pinion and gear wheels, the drive stator is connected to a split rotary rotor by Ohms of rods located on the gear wheel, on a detachable rotary rotor near each spool, two guide rollers are installed parallel to them for orienting the first insulating tape and the protective wrapper, in addition, spring-loaded rotary drive rollers with metal discs having pointed discs are installed on the front flange of the detachable rotor rotor edges, and on the rear flange mounted spring-loaded rubberized rotary driven rollers, all leading and driven rollers made in contact with the pipeline m and are installed under the scaffold to the axis of the pipeline, providing a rolling rotary rotary rotor around the pipeline along a helical line and at the same time ensuring the translational movement of the entire installation along the axis of the pipeline, support rollers are installed on the drive stator, made interacting with the pipeline, a winding mechanism is also located on the split rotary rotor anti-adhesive, characterized in that it additionally introduced a third spool, on which a second roll with the original insulating material is fixed, placed on a detachable swivel rotor parallel to the first two spools, all three spools are evenly spaced around the circumference of the rotor, on the detachable swivel rotor near the third spool, a third guide roller is installed parallel to it to orient the second insulating tape, each of the three spools contains a shaft on a cylindrical the surfaces of which the clips are installed - the first and second, with the possibility of free rotation around its axis, moreover, on the surfaces of the clips made in contact with the mandrel of the roll insulating material or wrappers, there are ribs, each of the cages is connected to the corresponding coupling half, each of which is equipped with a friction element, in addition, the landing holes of the coupling coupling have a rectangular cross-section, and the corresponding bobbin shaft neck - diametrically opposite flats on both sides, thanks why the coupling halves are fixed from rotation around its axis, in addition, the first coupling half is fixed from axial movement by two spring-loaded latches, and the second coupling half is located on the other the end of the spool shaft and is mounted with the possibility of axial movement limited by the position of the hub of the flywheel, mounted on the neck of the spool shaft on the thread, in addition, on the detachable rotary rotor near the third spool, a second release mechanism for the release of the adhesive is identical to the first, each of the winding mechanisms made in the form of a spring-loaded swing frame with a mounting bracket for the receiving mandrel, consisting of an arm and two hubs, and a belt drive for the mounting assembly of the mandrel, including the belt, the first pulley, fixed mounted on a guide roller, a second pulley mounted on one of the hubs, and a third (tension) pulley providing belt tension, each winding mechanism placed between the flanges of the split rotary rotor at an angle to the longitudinal axis of the pipeline and parallel to the axis of the corresponding roll with insulating material .