Method of laying main line across roads
SUBSTANCE: proposed method comprises driving the trench to accommodate therein the protective jacket to receive the pipeline thereafter. Before driving said trench, in front of motor road or railway said protective jacket is placed to accommodate rotary screw with detachable cutting element at its end face directed toward the road. Cutting tool diameter equals protective jacket OD. Screw length exceeds that of protective jacket, screw extension being directed from the road. Screw shaft is engaged with rotary drive placed at slide rails provided with semicircular ledge arranged atop said rails and directed toward protective jacket above said screw, its end and jacket ends are jointed together by flanges to be bolted together. Slide rails are to be fixed relative to drive by "П"-like bracket secured at drive frame to thrust against slide rails rear end and to surround them from both sides. Then, screw drive is switched on to displace slide rails with revolving screw and protective jacket toward the road so that said jacket penetrates into soil to get completely buried therein. Then, said cutting element and bolts are removed from screw end. Then said screw is withdrawn from said jacket to fit main pipeline section therein.
EFFECT: safe and reliable laying, lower costs and labor input.
The invention relates to pipeline transport and can be used for crossings of trunk pipelines through Railways and roads.
Famous adopted for the prototype system transition pipeline across the street and method of its manufacture, containing the protective cover located under the road outside of the pipe and the annular space between the protective casing and tubing filled plastic mass on the basis of synthetic high molecular weight compounds while ensuring the sealing annulus between the pipe and the protective casing with mechanical seal (U.S. Pat. Of the Russian Federation No. 2426930, IPC F16L 7/00), publ. 20.08.2011,, bull. No. 23).
However, a disadvantage of the known system transition pipeline across the road is digging trenches under roads or Railways before placing a tubular protective casing in the trench. Such an installation does not exclude the possibility of sagging of the support elements of roads and Railways, especially when passing over the dug trench road or rail transport, which can lead to the violation of the integrity of the supporting elements of roads. In addition, when passing over the trench vehicles can be partially or completely filling the trench with soil, which will require secondary excavation of the trench.
The technical result of the invention is the elimination of the possibility of violations of quality supporting elements of roads or railroads in the area of installation of underground pipeline across the road, as well as reducing the labor and time costs for laying a pipeline across the road.
The technical result is achieved in that in the method of laying pipeline across the road including excavation of trenches and placing in it a protective casing with subsequent placement of the pipeline, before the excavation of the trench prior to road or railway place protective casing of tubular cross-section to accommodate for rotation of the auger with a removable cutting element on its end side facing the road, the diameter of which equals the outer diameter of the protective casing, the length of the auger accept greater than the length of the protective casing with a projecting part of the screw in the side of the road, and the shaft of the auger perform kinematically associated with drive its rotation placed on the sled, on top of which are directed towards the protective casing and placed with a gap above the auger semicircular protrusion, the end of which and the end of the protective casing is made with flanges, with the possibility of their connection with screws, while the sled is placed is the possibility of fixation relative to the mobile mechanism using fixed on the frame is a U-shaped bracket with its emphasis in the rear part of the carrier and their coverage on both sides, after that, include a screw drive using movable slide mechanism with a rotating screw and connected with a semicircular protrusion of the slide protective cover placed in it a screw is shifted to the side of the road with the introduction of a protective casing with a rotating auger into the soil under the road with the destruction and removal of soil auger of the protective casing to complete the placement of the protective cover under the road, after which the end part of the screw remove the cutting element and the bolts connecting the flanges of the protective casing and a semicircular protrusion of the slide, then use the mobile mechanism from the enclosure and remove the screw and in a protective cover place the pipeline section.
Method of laying pipeline is illustrated in the drawing, in which figure 1 - position with respect to the tubular protective casing placed in it a screw in front of the road prior to the laying of the pipeline, figure 2 - section a-a of figure 1, figure 3 - cross-section B-B of figure 1, figure 4 is a view of figure 1, figure 5 is a transverse vertical section of road with a posted underneath the protective cover and the screw.
The method of laying the pipeline across 1 includes the excavation of the trench and placed in it a protective casing 2 with the subsequent placement of the pipeline (not shown). However, before the sinking of the trench prior to road or rail 1 place protective couch tubular cross-section to accommodate for rotation of the screw 3 with the cutting element 4 in its front part, facing the side of the road 1. The diameter of the cutting element 4 is equal to the external diameter of the protective casing 2. The length of the screw 3 take greater than the length of the protective cover 2, with a projecting part of the screw 3 in the side of the road 1. The shaft 5 of the screw 3 perform kinematically connected to the drive 6 of rotation placed on the carrier 7. On top of the sled 7 is fixed directed towards the protective casing 2 and placed with a gap above the auger 3 semicircular protrusion 8, the end of which and the end of the protective cover 2 is made with flanges 9 with the possibility of their connection by means of bolts 10. The carrier 7 is placed with the possibility of fixing a relatively movable mechanism 11 with attached to the frame is a U-shaped bracket 12 with its emphasis in the rear part of the slide 7 and their coverage on both sides. After that, include the drive 6 of the screw 3 and using a mobile mechanism 11 with the screw 3 and connected with a semicircular ledge 8 of the carrier 7, the protective cover 2 placed in it by a screw 3 is shifted to the side of the road 1 with the introduction of the protective cover 2 screw 3 in the soil under the road 1. Due to the interaction of the cutting element 4 and the screw surface screw 3 soil ensured its destruction and the destruction of the screw 3 from the inside of the protective casing 2 with the discharge of the removed soil through protruding from the protective aguja 2 part screw 3. Protective cover with 2 screw 3 to implement the necessary placement under the road 1. After that, with the end part of the screw 3 remove the cutting element 4 and the bolts 10, which connects the flanges 9 of the protective casing 2 and the semi-circular protrusion 8 of the carrier 7. Then with the help of movable mechanism 11 of the casing 2 remove the screw 3, and the protective cover 2 place the pipeline section (not shown).
Features of the invention exclude the possibility of compromising the quality of the supporting elements of roads or railroads in the area of installation of underground pipeline across the road, and also provide reduction of labor and time costs for laying a pipeline across the road.
The method of laying the pipeline across the road including excavation of trenches and placing in it a protective casing with subsequent placement of the pipeline, characterized in that prior to the excavation of the trench prior to road or railway place protective casing of tubular cross-section to accommodate for rotation of the auger with a removable cutting element on its end side facing the road, the diameter of which equals the outer diameter of the protective casing, the length of the auger accept greater than the length of the protective casing, a projecting part of the screw in the side of the road, and the shaft ø the ESA perform kinematically associated with drive its rotation, posted on the sled, on top of which are directed towards the protective casing and placed with a gap above the auger semicircular protrusion, the end of which and the end of the protective casing is made with flanges, with the possibility of their connection with screws, while the sled is placed with the possibility of fixation relative to the mobile mechanism using fixed on the frame is a U-shaped bracket with its emphasis in the rear part of the carrier and their coverage on both sides, then include a screw drive using movable slide mechanism with a rotating screw and connected with a semicircular ledge slide the cover is placed it screw is shifted to the side of the road with the introduction of a protective casing with a rotating auger into the soil under the road with the destruction and removal of soil auger of the protective casing to complete the placement of the protective cover under the road, after which the end part of the screw remove the cutting element and the bolts connecting the flanges of the protective casing and a semicircular protrusion of the slide, then use the mobile mechanism from the enclosure and remove the screw and in a protective cover place the pipeline section.
FIELD: machine building.
SUBSTANCE: pipelines are arranged in coaxial holes-lodgments of supporting members connected to each other with ropes. A formed bank of pipelines is drawn into a tunnel. Traction force is applied to the first supporting member in the movement direction. The first and the last supporting members are located at the distance equal to the tunnel length. Number of intermediate supporting members is one less than the tunnel length divided by maximum allowable length of the bay between annular supporting members. Supporting member is made in the form of a hollow cylinder equipped with rolling elements and end walls. Outer diameter and width of the supporting member are 0.8-0.9 and 0.4-0.5 of diameter of the no-go tunnel respectively. Centres of coaxial holes-lodgments, the diameter of which is 1.05-1.1 of the diameter of routed pipelines, are arranged in a circumferential direction.
EFFECT: simultaneous routing of several parallel pipelines; reduction of losses of traction forces, protection of pipelines against mechanical damages during routing and operation, possibility of replacing individual pipelines or their full bank.
SUBSTANCE: device for protection of cylindrical structures comprises at least two protective racks and at least one tightening element. Besides, each protective rack is made in the form of a shaped and linear item of an C-shaped transverse profile. The protective rack comprises two side surfaces, at least one of which is arranged so that hinged connection is provided with an adjacent rack.
EFFECT: invention provides for tight protection of cylindrical structures, expansion of arsenal of technical facilities for protection of cylindrical structures.
7 cl, 6 dwg
SUBSTANCE: ball movable support for installation of pipelines in cases comprises a pipe with fixators installed in a case, a shell with rolling elements in the form of balls contacting with the case, the support of which are plugs, a sector of pipe reinforcement. Balls are arranged in a row from 3-4 balls along the circumference arc in the plane perpendicular to the longitudinal axis of the pipeline. Plugs are installed at both sides from each row of balls. The pipe reinforcement sector is made with edges bent in radial direction relative to the case, performing a function of fixators. The pipeline diameter D, case diameter D0 and ball diameter d are related by the following ratio: d=0.5(D0-D)-h, where h - thickness of pipe reinforcement sector.
EFFECT: simplified and cheaper design, higher stability of a pipeline in a case, higher durability of structural element and reduced labour intensiveness of assembly and disassembly works during pipeline operation.
FIELD: machine building.
SUBSTANCE: strip footing is laid along pipeline trussed crossover, on its sides, to support reinforced concrete cantledges with no contact with pipeline.
EFFECT: higher anti-terrorist security.
FIELD: machine building.
SUBSTANCE: device is made of two fibreglass-plastic half-cases with their small diametre set on pipeline, while with their bigger diametre - on a jacket (case). Two and more external cylinder surfaces are made on the side of a bigger diametre. One and more external cylinder surfaces connected with conic surface are made on the side of a smaller diametre. Cylinder surfaces form webbing, which strengthens half-cases. A concave part eliminating loads at impact with soil during trench refilling is made between cylinder surfaces. An L-shape shelf is made along perimeter of split of the upper half-case. At assembly a shelf of the lower half-case enters the L-shape shelf with slight tightness. A main is pulled into the jacket (case) for assembly of the device. The rubber collar is installed and fixed with clamps-tie rods on the jacket (case) and the pipeline. The upper half-case with rubber cords glued on end sides into seats is lowered from top on surface of the collar assembly. The lower half-case with glued rubber cords is brought closer from beneath and tightened with bolts with the upper half-case, preliminary laying the rubber cord between shelves of half-cases. Closure of ends of rubber cords is controlled when half-cases are pulled together.
EFFECT: simplified assembly, increased strength of device for protection of rubber collar.
FIELD: machine building.
SUBSTANCE: inventions can be implemented at construction and reconstruction of crossing of mains (M) over rail and motor roads. The essence of the invention is like follows: tube space between M and protective jacket (PJ) is filled with a plastic mass on base of synthetic high molecular compounds. Further, the procedure for fabrication consists in filling tube space M-PJ either with heated plastic through collectors or under pressure through a vent stalk of the PJ.
EFFECT: increased reliability and service life of crossing due to increased rigidity and moisture resistance of system, raised processability of fabrication of new and reconstruction of old crossings.
15 cl, 2 dwg
FIELD: machine building.
SUBSTANCE: system for control and elimination of hazardous condition of main refers to pipeline transport and can be used for control over technical condition of potentially hazardous sections of mains, for example, at main crossing roads and at their mutual crossing. The system for control and elimination of hazardous condition of the main consists of a protective jacket, of an exhaust bleeder pneumatically connected to the jacket, and also of filter medium covered with gas impermeable material on top. Also, filter medium covered with gas impermeable material is positioned along whole controlled section of the main functioning as a protective jacket, in the exhaust bleeder of which there are installed sensors of parameters of technical condition of the main.
EFFECT: increased processability of replacement of out-of-order section of main at objective control of presence or absence of main hazardous condition.
3 cl, 1 dwg
SUBSTANCE: here is disclosed equipment for recharge of accumulator battery in system of main (M) crossing over electrified railroad with facilities of electro-chemical protection from effect of stray currents in circuit "M-rail". The equipment consists of a block of a primary shielding from over voltage including diode. Additionally it consists of a block of a lightning guard and in series connected block of the secondary shielding from over voltage, a conversion block, a block of galvanic isolation and a block of accumulator battery charge. Also the block of the secondary shielding is made in form of a relay and a source of control current with its output connected to an input of the relay. Notably, the cathode of diode of the primary shielding from over voltage is connected with the controlled input of the relay, while the anode is connected with the output of the lightning guard block; the output of the charge block is coupled to the accumulator battery, and the lightning guard is included to the circuit "M-rail" of the facilities of electro-chemical protection of electrified railroad.
EFFECT: protection of input circuit from long-term and pulse high voltage and from voltage of reverse polarity.
6 cl, 1 dwg
FIELD: mechanical engineering.
SUBSTANCE: crosspiece for co-axial located pipes, contains at least one gate, structure for clamp, of pipe, at least one element for distance selection, which is fixed to structure for clamp of pipe, herewith at least one gate is introduced at least into structure for clamp of pipe or at least only into element for distance selection and is implemented with ability of adjusting, that provides regulation of crosspiece diametre.
EFFECT: decreasing of space, weight and time for erection ensured by introduction of gate into crosspiece.
SUBSTANCE: pipeline section is installed in additional pipe of larger diametre. On both sides of obstacle there are vertical wells arranged. Pipes are connected to each other by means of nozzles with quick-detachable joints. Each nozzle is equipped with travelling rolls. Repair is performed as per the following sequence. At first they disconnect adjacent transition section from underwater part of pipeline. Underwater part, using traction rope, is shifted by pipe length. Pipe in well is disconnected and lifted to the surface. In a similar manner they dismantle the whole underground section of pipeline. Damaged pipes are replaced or repaired. Then pipes are alternately lowered back in well, and restored section of underground pipeline is assembled. Ends of restored section are connected to transition parts of pipeline.
EFFECT: reduction of labour and time expenditures for repair.
SUBSTANCE: installation comprises a frame, a carriage with a control unit arranged on it with a technological adapter, a hydraulic cylinder connected by the body to the frame, and with the stem to the carriage, at the same time the frame has guides for carriage rollers. The frame is made of the carriage frame and the hydraulic cylinder frame connected to each other.
EFFECT: increased reliability of operation and reduction of time for installation assembly and disassembly, increased volume of working space in a well and increased efficiency of performed works due to placement of a hydraulic cylinder with stem length that is larger than in a prototype outside the limits of the well, and whenever it is required to increase force characteristics.
3 cl, 2 dwg
SUBSTANCE: method in accordance with the first version includes formation of a pilot well along a design axis of the installed utility, expansion of the pilot well to the design diameter by damage of soil with the help of a working element connected with a drilling rod, and transportation of products of damage by means of a pipeline connected with a free end of the working element as the latter rotates around the longitudinal axis, for this purpose pressure is pulled at the open end of the pipeline below the atmospheric pressure with the help of a vacuum-forming device. The method in accordance with the second version differs from the method in accordance with the first method by the fact that transportation of damage products is carried out with the help of a drilling rod.
EFFECT: increased efficiency of a working process due to usage of process equipment, principle of operation of which provides for rational use of installed capacity.
3 cl, 2 dwg
SUBSTANCE: device comprises a body, a working organ, a mechanism of tunnelling direction control, which is made in the form of a tip installed in the front part of the body with the possibility of angular displacement, connected with a piston, a spring, a chamber, connected with channels for energy resource supply, and a navigation device fixed in the body, besides, the spring with its rear end is fixed on the front end of the piston, and with the front end - on the body, at the same time the read end of the piston contacts with the specified chamber.
EFFECT: arrangement of a tunnelling direction control mechanism inside a device body prevents negative effect of soil in process of well tunnelling.
3 cl, 4 dwg
SUBSTANCE: device for formation of wells in soil by the method of piercing comprises a hollow working tip of conical shape fixed on the front end of a pressure rod in direction of piercing and a feeding mechanism. In the wall of the hollow working tip there are holes, and on its outer surface there is an elastic impermeable shell fixed to the top and the base of the working tip. The inner cavity of the working tip is tightly connected to the hollow pressure rod, the other end of which is connected with a source of pulsating liquid or gas.
EFFECT: increased efficiency.
SUBSTANCE: device for trenchless laying of pipelines by piercing comprises a working tip of conical shape, a vibrator of circular oscillations of which is arranged in the form of an electric motor with a hollow shaft, the stator of which is fixed in the working tip, and the rod is installed inside the hollow shaft, having a displaced centre of gravity relative to the axis of rotation, at the same time the rod is fixed on the flange, which is mounted on the front end of the laid pipeline along the piercing direction. The rotation device is arranged in the form of a cover with a hole, rolling in displaced surfaces of the rotating eccentric reciprocally moving along the longitudinal axis of the rod.
EFFECT: higher accuracy of pipeline laying.
SUBSTANCE: device for trenchless installation of pipelines, comprising a guide body arranged on telescopic supports with a cut upwards, made of a 2/3 diameter of the pipe in the form of a hemisphere reinforced with stiffening ribs, having inside the welded thrust plates at the distance equal to the length of the power hydraulic cylinder stem, windows for soil discharge, stop wedges, a grip, differing by the fact that a carriage made as telescopic of double-sided action, having thrust sliding plates, an opening for soil transportation, is arranged inside the guide body transferring the force of power hydraulic cylinders installed on the telescopic carriage of the double-sided action.
EFFECT: higher efficiency of labour, expanded range of installed pipelines diameters, lower labour intensiveness.
FIELD: oil and gas industry.
SUBSTANCE: combined air-impact device includes a needle fixed in head part of the housing, working and auxiliary chambers separated with a spool valve with calibrated channel for connection of the above chambers, calibrated channel for connection of auxiliary chamber to atmosphere at the corresponding position of spool valve, stepped longitudinal channel for arrangement in the latter of differential piston and check valve, and which opens discharge ports of the working chamber periodically. Device is made in the form of combined structure containing front and rear housings with compressed air pulse escape mechanism and shank of two nipples connected to each other; at that, exhaust openings of working chamber in front housing of the device are oriented at design angle within more than 90°, but less than 180°, and in rear housing at design angle within more than 0°, but less than 90° relative to shank part from longitudinal axis of combined structure, and shank with air-distributing mechanism for compressed air supply at design pressure P1 or P2 to auxiliary chambers of the device and consisting of spring-loaded stock-piston with central and transverse channels and system of air-distributing channels supplying the compressed air to auxiliary chamber of front and rear housings with possibility of alternating supply to them of compressed air at pressure P1 or P2 at the corresponding position of stock-piston in the shank.
EFFECT: increasing operating efficiency of the device.
SUBSTANCE: device for trenchless installation of pipelines by means of piercing comprises a hollow working tip of conical shape connected via a hinged joint and a support of rotation with a shaft, installed in rotation supports on a flange, which is mounted on the front end of the installed pipeline, in direction of piercing, a vibrator of circular oscillations, a vibrator drive installed in the laid pipeline and a feed mechanism. The vibrator of circular oscillations is arranged in the form of movable weights capable of radial displacement in guides rigidly fixed on the shaft, at the same time movable weights via solids of revolution are pressed by means of springs to the inner conical surface of a ring, installed in a hollow working tip capable of axial displacement by "screw-nut" transfer.
EFFECT: higher efficiency of device operation in soils with various physical-mechanical properties.
SUBSTANCE: device comprises a frame rigidly fixed as inclined in a working pit, where a driven pipe is laid. Sleds move along the frame, where a driving plate is installed as capable of rotation in three coordinates and movement along the transverse direction, with the help of which the vector of force application to the pipe end changes directionally. The device is equipped with a pipe clip, which makes it possible to do driving using a technology of tunnelling by a microshield, and also with an adjustable front roller support to ensure alignment of welded pipes.
EFFECT: device is designed to go through curvilinear sections of a route using previously bent pipes with a specified radius of curvature, which substantially increases efficiency of tunnelling due to reduction of length of curvilinear section tunnelling.
6 cl, 3 dwg
SUBSTANCE: method of trenchless pipe laying in soil, including washing a channel in soil with jets of liquid filled via a pipeline tip as it is laid in the specified direction. Liquid is sent periodically, besides, prior to supply a solution is added with at least one surfactant, and at least one gasifying agent is added, forming a mixture, at the same time gas generation is carried out directly in pores of soil during its contact with the gasifying agent of the mixture. The channel in soil is expanded with jets of the specified mixture directed at the angle to the axis of the laid pipeline. The pipeline during installation is rotated around its axis.
EFFECT: higher efficiency of pipeline laying.
3 cl, 1 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