Method and device for assembling cylindrical pipeline in trench having opened top

FIELD: building, particularly construction of underground pipelines.

SUBSTANCE: device adapted to perform movement along trench comprises container for pipeline billets, means for progressive extraction thereof, hardening resin storage tank, means for continuous impregnating fibrous billet base with hardening resin as billet is fed in trench, means for pumping compressed air into billet cut to impart cylindrical shape to it after billet laying in trench and resin hardening means. Fibrous billet base is provided with loom of crossing threads. Method of pipeline assembling involves arranging billet cut near trench; impregnating fibrous billet base with hardening resin; covering billet cut with tubular protective shell; laying billet cut in flattened state into trench in top-down direction; closing ends thereof; pumping compressed air with the use of pneumatic means to impart cylindrical shape to billet cut; hardening resin by heating thereof with the use of electrical resistors built in fibrous billet blank.

EFFECT: simplified pipeline assemblage.

8 cl, 14 dwg

 

The present invention relates to the method of construction of the cylindrical pipe open at its upper part of the trench and to a process plant for implementing the method.

Later, the term “trench” is to be understood, in particular, and mainly, the hollow passage in the ground, having a cross section generally U-shaped, open up and designed for capping or backfilling after the pipe is laid in the channel or trench.

However, the present invention may include other applications, in particular, in cases where the location of the pipeline can be carried out freely and to be in the direction from top to bottom.

For example, alternatively, the pipeline may be placed directly on the ground surface.

In accordance with other applications of this pipeline can be placed, for example, on lucabrasi hanging holders, having U-shaped cross section and is fixed by means of special supports at a certain height above the earth's surface.

At the same time, it should be noted that the present invention does not concern the technical areas of repair or restoration of the previously laid pipeline by forming either the inner shell or coating in the case when the internal space of this pipeline may be available only in the axial direction from one of its ends, but not in its transverse direction.

More specifically, the invention relates to a method of continuous laying of a cylindrical pipe of great length, formed on the basis of a segment of flexible tubular preform, which is in the initial state is composed, in particular, tapered flat, and which can be stretched or straightened to give her a round cross-sectional shape, that is, to make this workpiece has a cylindrical shape, under the influence of internal pneumatic pressure in it (i.e. under the action of gas pressure in the filling gas of the workpiece, and subsequently curing the thus obtained pipe directly at the place of its installation.

Pipes of this type are specially designed to transport fluid, in particular oil or gas over long distances.

Traditionally, such pipelines are made either of steel or of composite materials having, in particular, tubular fibrous structure formed, for example, fiberglass, impregnated with curable-curing resin, in particular a resin, which lends itself to polymers is of thermal effects.

Such pipelines are traditionally made on the basis of elementary segments of pipe to a predetermined length, which may be, for example, 12m Outer diameter of such pipes usually has a value in the range from 300 mm to 1000 mm

The pipelines are made of steel, are typically implemented by connecting end-to-end by welding a large number mentioned elementary pipe segments.

Then on the outer surface of the thus formed pipe cause the protective corrosion-resistant coating. In cases where the underlying transport fluid itself is a strong corrosive agent, in this pipeline should be provided and also an inner corrosion-resistant coating.

Pipes made of composite materials, the preferred way is used in cases where corrosion problems are very significant and do not allow the use of steel pipes.

Such pipes are traditionally made on the basis of the tubular segments of a given length, component, e.g., 12 m, which are connected end-to-end and secured in this position typically by screwing, and gluing complements finally made the connection.

TRU is Provody of this type are very expensive, in particular, because of the need of machining the ends of the pipe segments to enable their end-to-end connection.

In addition, this conventional technology of pipe joints in a natural way poses problems of transportation.

Usually the pipes are transported to the place of their installation with the help of trucks, and the number of transported pipes is limited to their total weight and occupied volume.

Thus, if we are talking about pipes with a diameter of 500 mm, on one truck can carry only ten segments such pipes with a length of 12 m each (or a section of pipe with a length overall of about 120 m).

Thus in order to lay the pipeline length 2000 m need, therefore, for more than 16 trucks that meets the need of transporting a weight of about 240 tons

In addition, the connection pipe butt is a lengthy, time-consuming and require highly skilled personnel operation. At the same time to create a pipeline with a length of 2000 m it is necessary to perform more than 150 of such compounds.

The previous state of the art in this area can be illustrated, in particular, patents FR-2155485 and ER-0856694.

The object of the patent FR-2155485 is a device for pipe-laying.

Technology is Oia, described in this document, is used as the original piece soft and tapered flat tube made of refractory material cure, for example, from polymeric synthetic resin containing a catalyst of the structure, running in the heat. When this tapered so the pipe is wound on a reel.

In place pipe-laying that pipe is wound with a coil, straighten it, giving it a round cross-sectional shape, and carry out its gradual curing as pipe laying on the ground.

Device for expanding tapered pipe, formed by two spheres that are installed inside the pipe at its outlet from the coil, is designed to give the pipe of circular cross-sectional shape, that is, to give it a generally cylindrical shape, while the device that provides the curing of the pipe wall, is used directly after giving it a cylindrical shape. This curing is ensured, in particular, by this irrigation pipe liquid medium having the desired chemical composition and proper temperature.

The method in accordance with the above-mentioned document FR-A-2155485 is difficult to implement due to the fact that it is very difficult to ensure proper is e hold the said expansion unit with two spheres, provided inside the workpiece, which allows you to make the pipe of circular cross-sectional shape.

Technology shaping inner shell already laid pipeline has already been proposed curable curing the resin to be incorporated into the structure of the wall of the shell just before the introduction of this wall (in axial direction) in the pipeline.

The previous state of the art in this area can be illustrated by patent documents US-4135958, US-4182262, FR-2445220 and FR-2488971.

However, since in this version of application is possible only axial access to the pipeline, placing the tubular shell is carried out by turning the wall on itself like a stocking. While its internal in the initial position, the surface becomes the outer and Vice versa.

This operation of turning requires a relatively large axial force, the more significant the larger the thickness is the wall. In practice, it can no longer be moved when the values of the wall thickness in the range of from about 10 mm to 30 mm, i.e. those values that are typically used within the present invention, if it is desirable to use moderate pressure using compressed air.

Mentioned tubular sheath is deformable in the radial direction of the tion, to ensure the possibility of its turning and pressing to be repaired the wall.

And finally, because this method is discontinuous way (as in document US-4135958) or in a continuous manner and with the formation of the resin rolling bag located in front of the zone of eversion of the wall, the impregnation of the walls of this resin is very complex and does not provide sufficient homogeneity of this treatment.

Closest to the claimed invention are the method and the device according to European patent EP-0856694.

In the patent EP-0856694 described method, in accordance with which the source element is a workpiece in the form of a tapered flat tubes, the wall of which contains fibrous reinforcement type tubular fibrous structure which is impregnated curable-curing resin, for example a resin curable polymerization by thermal influence.

This tubular workpiece is stored in a flattened condition, for example wound on a drum (reel), and delivered to the laying of the pipeline in this state.

The pipe, which can have a greater length into the trench in this flattened condition, and then give her a round cross-sectional shape under the action of internal pressure created by a fluid, for example water, is odavama under pressure into the internal cavity of this pipe.

Then carry out the curing of the resin so as to obtain a rigid pipe has a cylindrical shape.

The method in accordance with the above-mentioned document EP-0856694 requires the use of some liquid under pressure, for example water, to give the workpiece a round cross-sectional shape after the workpiece is laid in the trench. The implementation of this method is rather complicated and relatively time-consuming and in any case requires on-site installation of the pipeline mentioned liquid.

At the same time, these known techniques use the blank wall which already contains the resin, which is injected into the composition of this wall at the factory during production of the blanks.

The presence of this resin has a definite impact on the weight and volume of the workpiece, even when it is in a flattened condition.

In addition, since in this case we are talking about the resin that can be cured by thermal influence, long-term storage of the workpiece at ambient temperature can lead to the beginning of the process of structuring polymer. This unwanted start structuring can lead to behavior change resin and even impossibility future use.

When using the known devices it is necessary, therefore about what atom, to keep the workpiece and, accordingly, the resin which it contains, in a container with controlled temperatures, including during transportation, which, of course, poses certain practical problems as well as problems increase in cost.

The present invention is to develop a method and installation for the construction of a cylindrical pipe open at its upper part of the trench using a section of flexible tubular preform, which is in the initial state flatly folded like a fire hose having a light weight and compactly stored, and the specified workpiece, in contrast to the known, should not require its immediate use or store in locations with constant temperature control, as specified installation and method, in contrast to the known, could be used everywhere, providing high performance and efficiency, and consistency of a given pipe diameter, that is, to overcome the disadvantages inherent in the prototype.

The problem is solved in that in the method of construction of the cylindrical pipe open at its upper part of the trench is made on the basis of a segment of flexible tubular workpiece, in the initial state which is folded flat like a fire hose when Otsu is under water in, made with the possibility of making a round shape in its cross section, but is not extensible in the radial direction under the action of internal pressure resulting from its pumping air, and the wall of which contains a fibrous base, covering her inner sealing sheath according to the invention (a) placing a segment of the workpiece in the immediate vicinity of the trench; b) impregnating a fibrous base with braiding of intersecting fibers, which prevents radial expansion of the wall of the workpiece, when the workpiece give a round cross-sectional shape, curing thermal impact resin directly on the construction site of the pipeline, and piece billet cover tubular protective shell after impregnation the basics-curable resin and before laying the block in the trench; C) stack segment flat folded blanks in a trench in the downward direction; g) pump cut blanks to give it a cylindrical shape; d) is produced by curing the resin by heating electrical resistance embedded in a fibrous base, and operations b) and C) are produced continuously, and the operation of laying perform without turning the wall itself.

Preferably, the impregnation resin is sushestvovali under reduced pressure.

It is advisable to cut the workpiece is delivered to the work site in the state of warehousing, that is folded or wound condition.

It is also advisable to mentioned the whole pipeline has been implemented through end-to-end connection of multiple segments mentioned blanks.

The problem is solved also by the fact that the installation for the construction of a cylindrical pipe in the trench using a segment of flexible tubular workpiece, in the initial state which is folded flat like a fire hose when the lack of water made with the possibility of making a round cross-sectional shape, but is not extensible in the radial direction under the action of internal pressure generated as a result of its pumping air, and having a wall provided with a fibrous base, and the wall of the workpiece in the process of construction of the pipeline is not turned on itself, according to the invention, contains a movable system, configured to move along the trench and containing a container for storing cut the blank in the folded position; a tool designed for the gradual extraction of the mentioned cut workpiece from the container; share storage tank-curable resin; a tool designed for impregnation mentioned fiber is stand fundamentals-curable resin, carried out continuously as extracting the workpiece from the container; means for continuously laying in the trench in the direction from top to bottom cut blanks, resin-impregnated and folded flat, and the fibrous base is equipped with a braid of intersecting fibers; means of pumping air, configured to discharge compressed air into the internal cavity cut blanks to give a segment of the cylindrical workpiece after its installation in the trench, and means for curing the resin.

It is advisable that the installation was intended for use with the workpiece, impregnated cured by thermal effects of the resin, and as a means of curing the resin would be used in heating means comprising a generator of electric current.

It is also advisable that the generator of electric current was connected to the circuit of the electric resistance, made in the form of longitudinal conductive lines embedded in the above-mentioned fibrous basis, with the possibility of heating the resin at the expense of the Joule effect.

Preferably, the means necessary for impregnation curable resin fibrous base, was used in space, which is supported by low blood pressure.

Other characteristics and preimushestvennogo of the invention will be better understood from the following description of its implementation, where references are given in Appendix figures, among which:

figure 1 is a schematic perspective view of the inner section of the device cut the workpiece, which is used in the process according to the invention;

2 and 3 are schematic views, respectively, front and side view, in section along the plane III-III shown in figure 2, the container for storing the above-mentioned workpiece;

figure 4 is a schematic side view of the device in accordance with the invention during operation of the pipe-laying;

figure 5 is a schematic rear view of the proposed facility in cross-section on a vertical plane V-V shown in figure 4;

6 is a schematic top view of the same installation, and this type is more specifically illustrates the operation of impregnation of the preform with resin;

figa, 7b, 7C and 7G are schematic views illustrating various stages in the process of laying the pipeline when using the method in accordance with the invention;

Fig is a schematic view of the cross-section of the workpiece in the initial state;

figures 9 and 10 schematically illustrate in cross section placement in the trench prior is sustained fashion resin-impregnated preform, respectively before and after pumping this stock air;

11, 12 depict a diagram of the vacuum impregnation of the preform with resin;

Fig depicts a diagram wraps workpiece with a protective film;

Fig depicts, in longitudinal section, of the workpiece on the output end of the processing devices coated with resin and devices for the permanence of the thickness of the layer of resin.

The original workpiece 1, is schematically presented in figure 1, is folded on itself, that is, this case is flatly folded fire hose that does not contain water.

The wall of this original piece is flexible and capable of deformation and contains, when viewed from the inside outwards, a thin tubular sealing film 10, the fibrous base 2 and the protective coating 3.

This original workpiece 1, the longitudinal axis of which is indicated by the position x-X', can be quite long, which, for example, from 1000 to 2000 m

Mentioned, the inner film 10 can be manufactured, for example, of synthetic rubber.

Mentioned fibrous base 2 is formed by bonding the fibers constituting, for example, fiberglass or carbon fiber and gives the final pipeline required mechanical and chemical properties.

This fibrous base 2 in the preferred embodiment, the implementation may be brasovan a set of concentric tubular structures, inserted one into the other, and each of these structures represents a braid of flat fibers or tapes, distributed into two groups 20A, 20B, which intersect one another symmetrically with respect to the longitudinal axis x-X'.

Each of these films are formed, for example, from multiple adjacent to each other fibers.

The tubular design of this type is described, for example, in patent application WO-9425655 to which you can refer if necessary.

In this case, it is important that the radial deformation of the blanks, which, as will be seen from the following discussion, is provided by pneumatic means, corresponds to a precise diameter.

To do this, assuming that you are using braid of mutually intersecting fibers of type that which was mentioned above, the stated results can be obtained by using the angle value 108° between the two groups of strips 20A, 20B (or angle value 54° on either side of the longitudinal axis of the workpiece), and the magnitude of this angle allows you to do this billet inextensible in the radial direction in the case of application to the procurement of a certain internal pressure.

Accordingly, due to the fact that the workpiece is stretched in the radial direction, its length is and is unchanged under the action of its pumping air.

In the initial state referred to the basis 2 of the workpiece does not contain a curable resin cure.

Mentioned outer protective coating 3 is a temporary coating that can be obtained, for example, by helical winding of the tape made of plastic material and having a small thickness. The function of this external coating 3 is to ensure the protection mentioned fibrous basics 2 from contamination and facilitate manipulation of the workpiece, in particular, during its storage and expenditure of ore stockpiles.

In figure 1 you can see that the base 2 includes longitudinal threads 21. In this case we are talking about conductive thread, which in the example considered here the implementations are arranged along the longitudinal direction of the blanks. These threads are adapted to enable the heating of the walls of the blanks in the result of the Joule effect, and these threads 21 placed in such a way as to form one or more electrical circuits that can be connected to a generator of electric current at one end of the blanks.

Figure 2 and 3 schematically shows a possible way of storing the workpiece 1.

In accordance with this method of storage is used, the container 4 or the bunker, issue lenny in the form of a rectangular parallelepiped, width that matches the width used in this case cut the workpiece 1.

This preparation zigzag folded on itself to form a package stacked on top of each layer, filling the inner space of the container.

As can be seen in figure 4, the container 4 may be a compartment of the body of the truck 40 is designed to move along the is used at the laying of the pipeline trench T, for example, to override this trench and moving on top of it.

The installation, which is schematically presented in figure 4-6, represents the above-mentioned truck 40, which is connected to the trailer 5.

All units mounted on a wheeled chassis so that she was able to block the trench T as shown in figure 5.

The above-mentioned container 4 is supplied by the device 41, designed for retrieving and filing of this container alternate cut of the workpiece 1.

There can be used the device of any known and suitable in this case type. In figure 4 the device is shown schematically as a pair of rotating rolls, which provide a continuous and uniform linear extraction of a segment of the workpiece 1 from the container 4.

Then this piece billet passes through the scoop is Prosti processing devices 6, 7, 8, which are placed on the trailer 5. This period gradually, evenly and continuously extracted from these processing devices using device 81, which may be a roller device, the device 41, then this length of workpiece is placed on the bottom of the trench So

Needless to say that the rate of forward progress of the moving system 4-5, which is schematically illustrated by the arrow F in figure 4 and 6, synchronized with the speed of extraction of the cut blanks used mentioned means 41, 81, therefore, to provide a continuous, gradual and uniform styling of this section of the piece on the bottom of the trench So

The above trailer 5 includes a tank 50 in which is placed a liquid resin, designed for insertion into the workpiece 1.

In this case we are talking about, for example, the resin remaining in a liquid state at normal temperature and is capable of polymerization at elevated temperatures. This tank 50 has thermal insulation and the temperature is controlled so that the resin was kept in acceptable terms.

The device 6 is designed to remove the above-mentioned protective sheath 3.

For this purpose, this device has a receiving coil 60, which is mounted rotatably, the one hand, on its own axis, parallel to the longitudinal axis x-X' of the workpiece, and on the other hand, around the block.

Appropriate drive means, not shown in the figures, is provided in order to inform that the receive coil 60 these two paired rotational motion.

Figure 6 arrow i symbolically shows the rotation of the take-up spool 60 around its own axis and the arrow j shown the rotation of this coil around the workpiece, and these movements provide separation and removal by reeling from the workpiece (and then winding on the take-up spool) protective tape 3. Thus, the fibrous base 2 of the workpiece after it is open, i.e. not containing coating.

Then the workpiece is fed into the processing device 7.

The function of this device is to provide in a continuous mode impregnation of a fibrous basis 2 resin. For this purpose, the device includes means 70, intended to cover the procurement resin taken from the tank 50 through a system of supply and distribution, containing one or more pumps 700 suitable in this case type.

The inner space of the processing device 7, the preferred way is maintained under negative pressure (relative to atmospheric pressure) through the Waco is a lot of pump 701. Appropriate sealing seal is provided for this purpose, the separating device 7 from the previous 6 and 8 follow processing devices.

Can be used in a variety of principles to ensure the impregnation of the fibrous resin bases contained in the workpiece. For example, the impregnation can be carried out in the transmittance of the workpiece through a bath of resin or as a result of ejection of the resin to the work piece. Low pressure around the workpiece favors its impregnation, eliminating the formation of air bubbles in the resin.

Vacuum impregnation of the preform produced according to 11, 12 and by analogy with the method according to patent US 3737261, in particular, in the case of the present invention, in which the flat folded blanks (1) are oval, packing seals 33 and 34 also have an oval shape.

As shown in Fig, to control the constancy of the thickness e of the resin in the sealing gasket 34 at the output end of the processing devices has a hole (slit)with a wide cross-section. The coating resin 11 is applied around the perimeter of the workpiece 1 on the output device has an uneven surface and the average thickness eabout>f (Fig). After the device 7 is provided filer 5', also having an oval aperture (slit) of smaller cross-section with kalibrowannoj the thickness e. Excess resin is collected and used in the next cycle.

The preferred way, after the workpiece is coated with resin, provide cooling, passing the workpiece through the device 71 cooling, which can also be used any suitable in this case the device is of a known type.

As an example, in this part of the processing can be fed under pressure flows of cold air at the surface of the workpiece so that at least partially thickening the resin to exclude her sudden and unwanted runoff from the workpiece, which may lead to differences in the thickness of the block.

Function next processing device 8 is to re-cover protective shell preform, which has just been impregnated with resin and chilled.

This protective coating as the original protective coating 3 may also be a strip of flexible film 12, made for example from plastic material and spirally wrapped around the workpiece. The function of this protective coating is to keep the resin around the workpiece and to prevent its contamination with sand or earth from the trench.

For this purpose, the protective film 12 is placed on the coil 80, which also has opportunities in order to rotate around its own axis, as schematically shown by arrows k, in the direction of the winder with her ribbon, and around the workpiece, as shown schematically by the arrow 1.

In more detail the process of winding the protective film on the workpiece illustrated in figure 13. The drum 80 with a protective film moves along an elliptical trajectory T (in the direction of arrow K) uniformly and cycled around the workpiece. The drum can rotate around its own axis (arrow G) only when the force of the pull acting on the film reaches the preset value (provided by the system stops the axis of the drum). Thus, the tension of the film always corresponds to the desired values. Moving drum sweep is synchronized with the forward movement of the workpiece. The duration of the half-turn of the drum from the position (I) to (II) in figure 13 is equal to the duration of the translational motion corresponding to the half pitch of the winding. This correlation provides standard monitoring device moving means.

A segment of the workpiece 9, impregnated with resin and containing a coating of a protective film, is continuously laid on its entire length, indicated by the position L, the bottom of the trench T by displacement of the moving system 4, 5 along this trench. This situation is schematically illustrated in figa.

After it is about provide overlapping both ends of the workpiece 9 is sealed with respect to the air by means of overlapping caps 90, 91, as shown schematically in figb.

Then connect the air compressor 92 to one of the overlapping stubs this case, the cover 90, as schematically shown in figv.

Through this compressor pump 92 of the workpiece 9 with compressed air. This pumping gradually extends from the cover plate 90 in the direction opposite her stub 91, and the workpiece becomes round in cross-section, assuming a cylindrical shape.

Certainly, the aforementioned protective film 12 should be sufficiently flexible and elastic so as not to resist radial expansion of the walls of the blanks in the process of inflation.

As mentioned above, the round cross section of the billet is strictly defined and constant throughout from one end to the other due to derestimate used fibrous basis.

Air pressure of about 1 bar is sufficient to ensure proper pumping of the blanks over the entire length L.

Then commence the curing of resin used.

In the example implementation, schematically illustrated in Fig.7, this curing process of the resin is provided electrically, etc is what a generator of electric current 93 is connected to the electric circuit of the resistances 21, mentioned above with reference to figure 1 and made in the form of longitudinal conductive lines. Thus, as a result of the Joule effect implement the polymerization of the resin impregnating the base 2.

This polymerization is completed after a few hours of such thermal processing.

After the pipe section indicated by the position 9' high, it will become quite hard, you can remove the end caps 90, 91.

After that perform a similar sequence of operations for the next pipe section.

This straightforward butt joint of various sections of the pipeline, for example, by wrapping adjacent to each other of the two end zones of two adjacent sections of tissue layers, moistened amenable to cure the resin, to obtain the coupling, which is sealed after curing the above resin.

On Figg schematically illustrates a butt joint of two sections of pipe 9a and 9b by means of such coupling 900.

On Fig, 9 and 10 schematically presents respectively the original workpiece 1, does not contain tar and tapered to a flat state, the workpiece 9, already impregnated with resin, but still flattened and stacked in such a state on the sandy underlayment's in the bottom is part of the trench, and a fully finished pipe 9', which gives a round shape in cross section, attached to the required rigidity and which is closed by a ground R already filled in the trench.

In an example implementation, you can specify that the pipeline 9' may have a diameter in the range of from about 300 mm to 600 mm and a wall thickness in the range of from about 10 mm to 30 mm

Needless to say that in this case you can use the resin catalytic type, which does not require a heat source to perform the polymerization.

When using such a catalytic tar mobile installation 5 can be equipped with two tanks, one of which is placed the actual resin, and the other is the agent, which is a polymerization catalyst, and these two substances are mixed only at the time of impregnation of the preform.

Instead be stored in the folded state, the length of the workpiece can be wound on the receiving reel (winch). In this case, the cross-section of the original piece is not inevitably completely flat. It may have, for example, the curvature of the U-shaped or spiral-shaped.

Required to use the amount of resin is about 5 to 20 liters per linear meter length of this pipeline.

Mentioned mobile system 4-5 do not have the Verka block trench, you want to lay this pipeline.

The proposed installation may be designed to move along the trench on one side, and in this case should be provided for the side shift system, designed for orienting and stacking the blanks in the trench as the progressive advance of this installation.

As described above, in the process laying the installation supply new portions of the resin and new segments of the workpiece.

The resin may be delivered to the work site in insulated barrels with controlled temperature.

Segments of the workpiece can be delivered to site in containers 4 or removable drums, easily installed on the truck 40.

The invention is specially adapted for laying oil and gas pipelines and other pipelines designed to transport various fluid over long distances.

Referred to the laying of the pipeline is optional in the trench. Support for such a pipeline may merely represent the ground surface or it can be formed by a set lucabrasi hanging holders, holding the pipe with uniform intervals in the Lamy at some height above the earth's surface. The proposed installation in a natural way developed so that it was adjusted R supports, referred to in this case.

1. The method of construction of the cylindrical pipe open at its upper part of the trench (T), is made on the basis of a segment of flexible tubular workpiece, in the initial state which is folded flat like a fire hose when the lack of water made with the possibility of making a round shape in its cross section, but is not extensible in the radial direction under the action of internal pressure resulting from its pumping air, and the wall of which contains a fibrous base (2), embracing her inner sealing sheath (10), characterized in that a) place a piece of a workpiece (1) in the immediate close to the trench (T);

b) impregnating a fibrous base (2), equipped with a braid of intersecting fibers (20A, 20b), preventing radial expansion of the wall of the workpiece (9), when the workpiece give a round cross-sectional shape, curing thermal effects of the resin (11) directly on the construction site of the pipeline, and a segment of the workpiece (9) cover with a tubular protective sheath (12) after impregnation its base (2) curable resin (11) and before laying the block in t is the ANSA;

in) stack segment flat folded blanks (1) in the trench from the top down;

g) pump segment of the workpiece (1) pneumatic means after closing its ends to give it a cylindrical shape;

d) produce curing resin (11) by electric heating resistors (21)embedded in the fibrous base (2)and operations b) and C) are produced continuously, and the operation of laying perform without turning the wall of the workpiece to itself.

2. The method according to claim 1, characterized in that the impregnation resin is carried out in a space in which is supported a reduced pressure.

3. The method according to any one of claims 1 and 2, characterized in that segment of the workpiece (1) deliver to the work site in the state of warehousing, that is folded or wound condition.

4. The method according to any one of claims 1 to 3, characterized in that the said pipeline in General implement by end-to-end connection of multiple segments mentioned workpiece (9, 96).

5. Setting, for the construction of a cylindrical pipe in the trench (T) using cut flexible tubular workpiece, in the initial state which is folded flat like a fire hose when the lack of water made with the possibility of making a round cross-sectional shape, but not EXT is emnd in the radial direction under the action of internal pressure, created as a result of its pumping air, having a wall provided with a fibrous base (2), and the wall of the workpiece in the process of construction of the pipeline is not turned on itself, characterized in that it contains a dynamic system of (4-5), is arranged to move along the trench and containing container (4) for storing a segment of the workpiece (1) in the folded condition; means (41)designed for incremental fetch mentioned cut workpiece from the container (4); reserve tank (50) for storing curable resin; a means (70)designed for impregnation mentioned fibrous base (2) curable resin (11), carried out continuously as extracting the workpiece from the container (4); means (8, 81) for continuous laying in the trench (T) in the downward direction of cut of the workpiece (9), impregnated with resin and folded flat, and the fibrous base (2) provided with a braid of intersecting fibers (20A, 20b); means (90, 91, 92) pumping air, configured to discharge compressed air into the internal cavity cut blanks to give it a cylindrical shape after his laying in the trench; means (93) for curing the resin.

6. Installation according to claim 5, characterized in that it is designed for use with the workpiece, impregnated cured in the t is michelago impact resin, moreover, as a means of curing the resin using heating means, comprising a generator (93) of the electric current.

7. Installation according to claim 6, characterized in that said generator (93) electric current is connected to the circuit of the electric resistance (21)made in the form of longitudinal conductive lines embedded in the above-mentioned fibrous base (2), with the possibility of heating the resin at the expense of the Joule effect.

8. Installation according to any one of pp.5-7, characterized in that the means (70)for impregnation curable resin (11) fibrous base (2), are used in space, which is supported by low blood pressure.



 

Same patents:

Ballasting device // 2246656

FIELD: construction.

SUBSTANCE: ballasting device has ballasting plate which is set in working position by horizontal rotation and introducing it in the undisturbed soil. The plate is set in rotation with the axle provided with the bell-crank actuated with traction mechanism. The bottom end of the axle is sharpened. The top end is provided with a tip for the bell-crank. Upon setting the ballasting plate in working position, the hinges of the plate are provided with ties which lock the pipeline with yokes.

EFFECT: expanded functional capabilities.

2 cl, 2 dwg

FIELD: construction.

SUBSTANCE: working member comprises rotors provided with teeth arranged symmetrically with respect to the axis of pipeline and provided with drive and mechanism for bringing the rotors together and moving them apart. Each rotor is provided with cleaning device which is arranged behind the rotor and secured to the unmovable segment of the working member for keeping it unmovable or permitting rotation. The cleaning members permanently co-operate with the outer side of the rotor.

EFFECT: enhanced efficiency.

1 dwg

FIELD: construction.

SUBSTANCE: pipeline has triply connected supports mounted on the stable sections above and under the slope subject to creep, one connected supports arranged over the subject to creep slope, and deformation compensator. The distance between the upper support and site of the deformation compensator arranged below the slope subject to creep is determined from the formula proposed.

EFFECT: enhanced reliability of the pipeline.

2 dwg

FIELD: pipeline transport.

SUBSTANCE: flexible pipeline comprises several pulp lines provided with chambers with ball check valves and interconnected through piping diaphragms. The outer surface of the pulp line is provided with a displacement device for movement along the pipeline. The sections of pulp lines receive shell made of layers of syntactic and polyurethane, the ratio of thicknesses of which is (10-4):1. The displacement device affects the piping diaphragm, pumps hydraulic mixture from the bottom section to the next one which is arranged above the check valve, and moves along the outer side of the pulp line to the next piping diaphragm mounted above.

EFFECT: expanded functional capabilities.

3 dwg

FIELD: construction.

SUBSTANCE: pipeline is laid on the concave part of the longitudinal section of the trench bottom on the layer of soft soil and is locked by filling one or two layers of soil with compacting. Screw vertical anchors and load-carrying belts are then mounted. Before filling the trench, the space between the belt and pipeline is provided with a cloth of unwoven synthetic material.

EFFECT: enhanced reliability of pipeline locking.

4 dwg

FIELD: laying or reclaiming pipes.

SUBSTANCE: method includes removing upper layer of spoil, developing side trench with disposal the spoil by damping. The development of side trenches is performed step-by-step. The stripped trench is provided with stripping machine, the side trench are deepened by the working members of the stripping machine below the bottom of the pipeline and pipeline is continuously stripped by trenching machine and stripping machine when it moves forward. The stripping machine has frame with running carriages, clamps, supporting members and mechanism for forward motion.

EFFECT: enhanced efficiency.

3 cl, 4 dwg

FIELD: construction engineering; erection of underground pipe lines in permafrost soils, in bogs and in flooded and marshy areas.

SUBSTANCE: proposed polymer container ballasting unit has two distance rigidity frames located on both sides from pipe line, reservoirs made from polymer commercial cloth and filled soil which are secured to said frames, anti-erosion partitions and upper and lower weighting belts. Distance rigidity frames are curvilinear in form and their height exceeds diameter of pipe line being ballasted. Bend of each frame is made at obtuse angle and lower part of each frame is inclined towards pipe line relative to trench bottom. Polymer commercial cloth laid along pipe line makes distance frame rest against ground of trench bottom both in filling the reservoirs with soil and at action of pushing-out load.

EFFECT: extended functional capabilities.

3 cl, 1 dwg

FIELD: pipe line transport; major repair of pipe lines.

SUBSTANCE: proposed method includes introducing the front end of pipe into damage pipe and forming hermetic cavity in inter-pipe space; then, pressure air (gas) is charged into hermetic cavity for motion of new pipe inside damaged pipe, after which piston is fitted at end of new pipe and detachable flange is connected to rear end of damaged pipe; motion of new pipe is effected by periodic charging of air into hermetic cavities; each hermetic cavity is bounded by piston and seal.

EFFECT: reduction of tractive force.

5 dwg

FIELD: construction engineering; erection of pipe lines in permafrost soils at alternating terrain.

SUBSTANCE: trench in smooth terrain and in sections cut by hydrographic net is dug in active layer at depth sufficient for location of upper generatrix of pipe line above level of daily level. Prior to laying the pipe line, bottom walls and berms of trench are lined with cloth of non-woven synthetic material. backfill soil is placed in ballasting polymer panel-type devices or in ballasting polymer container-type units suspended from pipe line. Anti-erosion partitions made from non-woven synthetic material are formed in sloping sections together with funnel whose neck is located downward of water flow embracing the pipe line at specified clearance between neck and pipe line. Funnel is formed by covering the natural slope of backfill soil by free lower edge of non-woven synthetic material with ballasting polymer panel-type or ballasting polymer container-type devices placed on lower portion of funnel followed by subsequent removal of embankment protecting the pipe line. As far as sections of route cut by hydrographic network are concerned, anti-erosion partitions are formed in trench at transients with opposite slopes of microterrain; anti-erosion partitions are made from anti-erosion cloths and backfill soil is placed n soil-filled weighting materials attached to pipe line. At low points where opposite sections cross, water pass or water bypass structure is formed in trench.

EFFECT: enhanced reliability; reduced scope of earth-moving work; enhanced stability of pipe line in horizontal plane.

9 cl, 8 dwg

FIELD: construction engineering; erection of pipe lines in thawing permafrost soils and in flooded areas.

SUBSTANCE: proposed method includes ditching at trench with widened areas located at definite distances and pipe line is laid on bottom of trench. Pipe line is covered with flexible rugs and bottom of trench at widened areas is also covered with rugs; edges of rugs are fastened in widened areas and trench is filled. Used as anchor member are cylindrical textile containers placed in lugs of flexible rugs in parallel with pipe line and filled with soil. Prior to fastening the edge sections of flexible rugs, each of them is tightened at fixation of tension; preliminary tension of edge sections is effected during filling the widened areas and trench soil ensuring contact of flexible rugs with bottom of widened areas and trench. Filling the widened areas and trench is performed in direction towards pipe line, symmetrically relative to it.

EFFECT: enhanced reliability of attachment of pipe line at 0required marks.

13 cl, 4 dwg

FIELD: construction, applicable for trenchless laying and replacement of underground pipe-lines.

SUBSTANCE: a reciprocating striker is positioned in the casing of the pneumatic percussion mechanism. The air-distributing system of the mechanism includes the front and rear working chambers, inlet and exhaust valves and a fixture for closing and opening of the exhaust channels made in the form of a spring-loaded end face stopper coupled to a tractive member. At actuation of the pneumatic percussion mechanism, before the supply of compressed air, the exhaust channels are closed, they are opened after the inner cavities of the pneumatic percussion mechanism are filled with compressed air.

EFFECT: provided automatic cyclic action of the pneumatic percussion mechanism.

3 cl, 3 dwg

FIELD: construction engineering; erection of pipe lines in thawing permafrost soils and in flooded areas.

SUBSTANCE: proposed method includes ditching at trench with widened areas located at definite distances and pipe line is laid on bottom of trench. Pipe line is covered with flexible rugs and bottom of trench at widened areas is also covered with rugs; edges of rugs are fastened in widened areas and trench is filled. Used as anchor member are cylindrical textile containers placed in lugs of flexible rugs in parallel with pipe line and filled with soil. Prior to fastening the edge sections of flexible rugs, each of them is tightened at fixation of tension; preliminary tension of edge sections is effected during filling the widened areas and trench soil ensuring contact of flexible rugs with bottom of widened areas and trench. Filling the widened areas and trench is performed in direction towards pipe line, symmetrically relative to it.

EFFECT: enhanced reliability of attachment of pipe line at 0required marks.

13 cl, 4 dwg

FIELD: construction engineering; erection of pipe lines in permafrost soils at alternating terrain.

SUBSTANCE: trench in smooth terrain and in sections cut by hydrographic net is dug in active layer at depth sufficient for location of upper generatrix of pipe line above level of daily level. Prior to laying the pipe line, bottom walls and berms of trench are lined with cloth of non-woven synthetic material. backfill soil is placed in ballasting polymer panel-type devices or in ballasting polymer container-type units suspended from pipe line. Anti-erosion partitions made from non-woven synthetic material are formed in sloping sections together with funnel whose neck is located downward of water flow embracing the pipe line at specified clearance between neck and pipe line. Funnel is formed by covering the natural slope of backfill soil by free lower edge of non-woven synthetic material with ballasting polymer panel-type or ballasting polymer container-type devices placed on lower portion of funnel followed by subsequent removal of embankment protecting the pipe line. As far as sections of route cut by hydrographic network are concerned, anti-erosion partitions are formed in trench at transients with opposite slopes of microterrain; anti-erosion partitions are made from anti-erosion cloths and backfill soil is placed n soil-filled weighting materials attached to pipe line. At low points where opposite sections cross, water pass or water bypass structure is formed in trench.

EFFECT: enhanced reliability; reduced scope of earth-moving work; enhanced stability of pipe line in horizontal plane.

9 cl, 8 dwg

FIELD: pipe line transport; major repair of pipe lines.

SUBSTANCE: proposed method includes introducing the front end of pipe into damage pipe and forming hermetic cavity in inter-pipe space; then, pressure air (gas) is charged into hermetic cavity for motion of new pipe inside damaged pipe, after which piston is fitted at end of new pipe and detachable flange is connected to rear end of damaged pipe; motion of new pipe is effected by periodic charging of air into hermetic cavities; each hermetic cavity is bounded by piston and seal.

EFFECT: reduction of tractive force.

5 dwg

FIELD: construction engineering; erection of underground pipe lines in permafrost soils, in bogs and in flooded and marshy areas.

SUBSTANCE: proposed polymer container ballasting unit has two distance rigidity frames located on both sides from pipe line, reservoirs made from polymer commercial cloth and filled soil which are secured to said frames, anti-erosion partitions and upper and lower weighting belts. Distance rigidity frames are curvilinear in form and their height exceeds diameter of pipe line being ballasted. Bend of each frame is made at obtuse angle and lower part of each frame is inclined towards pipe line relative to trench bottom. Polymer commercial cloth laid along pipe line makes distance frame rest against ground of trench bottom both in filling the reservoirs with soil and at action of pushing-out load.

EFFECT: extended functional capabilities.

3 cl, 1 dwg

FIELD: laying or reclaiming pipes.

SUBSTANCE: method includes removing upper layer of spoil, developing side trench with disposal the spoil by damping. The development of side trenches is performed step-by-step. The stripped trench is provided with stripping machine, the side trench are deepened by the working members of the stripping machine below the bottom of the pipeline and pipeline is continuously stripped by trenching machine and stripping machine when it moves forward. The stripping machine has frame with running carriages, clamps, supporting members and mechanism for forward motion.

EFFECT: enhanced efficiency.

3 cl, 4 dwg

FIELD: construction.

SUBSTANCE: pipeline is laid on the concave part of the longitudinal section of the trench bottom on the layer of soft soil and is locked by filling one or two layers of soil with compacting. Screw vertical anchors and load-carrying belts are then mounted. Before filling the trench, the space between the belt and pipeline is provided with a cloth of unwoven synthetic material.

EFFECT: enhanced reliability of pipeline locking.

4 dwg

FIELD: pipeline transport.

SUBSTANCE: flexible pipeline comprises several pulp lines provided with chambers with ball check valves and interconnected through piping diaphragms. The outer surface of the pulp line is provided with a displacement device for movement along the pipeline. The sections of pulp lines receive shell made of layers of syntactic and polyurethane, the ratio of thicknesses of which is (10-4):1. The displacement device affects the piping diaphragm, pumps hydraulic mixture from the bottom section to the next one which is arranged above the check valve, and moves along the outer side of the pulp line to the next piping diaphragm mounted above.

EFFECT: expanded functional capabilities.

3 dwg

FIELD: construction.

SUBSTANCE: pipeline has triply connected supports mounted on the stable sections above and under the slope subject to creep, one connected supports arranged over the subject to creep slope, and deformation compensator. The distance between the upper support and site of the deformation compensator arranged below the slope subject to creep is determined from the formula proposed.

EFFECT: enhanced reliability of the pipeline.

2 dwg

FIELD: construction.

SUBSTANCE: working member comprises rotors provided with teeth arranged symmetrically with respect to the axis of pipeline and provided with drive and mechanism for bringing the rotors together and moving them apart. Each rotor is provided with cleaning device which is arranged behind the rotor and secured to the unmovable segment of the working member for keeping it unmovable or permitting rotation. The cleaning members permanently co-operate with the outer side of the rotor.

EFFECT: enhanced efficiency.

1 dwg

Up!