CN105736895A - Deviation-adjustable type submarine pipeline quick repairing and connecting device - Google Patents

Abstract

The invention provides an adjustable deflection quick repair connection device for submarine pipelines, which is applied to the repair and connection operation of underwater replacement of submarine pipelines. The connecting device adopts the organic combination of various sealing technologies such as metal and non-metal to ensure the sealing between the connecting device and the pipeline; The eccentric adjustment of the eccentricity adjustment, and the seal between the connecting device and the newly replaced pipe is realized by using the ○-shaped sealing ring seal and the metal ring seal; The prefabricated annulus of the pipeline and the seal between the propulsion body and the main sealer; the positioner completes the automatic positioning of the connecting device according to the locking mechanism, and the auxiliary sealing box adopts packing seal and ○-shaped sealing ring to realize the connection between the connecting device and the original annulus of the cut pipeline The fixing and sealing of the connecting device has the characteristics of short repair time and low working intensity.

Description

Adjustable deflection subsea pipeline quick repair connection device

technical field

The invention relates to a quick-repair connecting device used when a submarine pipeline in the field of marine engineering leaks or is damaged, in particular to an eccentric adjustable quick-repair connecting device when subsea pipelines are replaced underwater.

Background technique

The submarine pipeline plays an important role in the oil and gas production in the field of offshore engineering. It connects offshore platforms and platforms, offshore platforms and land terminals, and offshore platforms and FPSOs (floating production storage and offloading units) into an organic whole. Oil and gas well production fluid, qualified crude oil, associated gas and other oil and gas media are exported, chemical agent delivery and water injection are important production tasks. Due to the particularity of the operating environment of the submarine pipeline, there are actual conditions such as high risk and high failure probability. Once a leak occurs, it will not only cause marine environmental pollution, waste of oil and gas resources, and interruption of oil field production, but will also affect the downstream and end users. Normal production and life are adversely affected.

According to the specific damage form of submarine pipelines, three main methods can be adopted at present: pipe clamping, composite material reinforcement and underwater pipe section replacement. Short, it can be used for pipeline leakage caused by corrosion, base material defects, cracks and other reasons, but once the submarine pipeline is severely damaged or deformed, it is difficult to achieve effective plugging and repair. Composite material reinforcement repair technology, such as injecting epoxy resin and other materials, this repair technology is easy to cause impact damage to the pipe body of the submarine pipeline, and the injection equipment itself is complicated and huge, and the on-site material production and underwater operation process are complicated, which is not conducive to the submarine pipeline. Quick fix for plumbing. The underwater pipe section replacement and repair technology is characterized by a wide range of applications, and can complete the repair of various forms of submarine pipeline damage such as corrosion or fracture, but the disadvantage is that the production technology of the key spare part, the mechanical connector for repair, has been in the hands of foreign professional companies. , China has not yet formed the corresponding research and development and production technology capabilities, and its foreign order cycle is long.

Contents of the invention

In order to effectively solve the problem of rapid repair of submarine pipelines and overcome the defects and deficiencies of existing repair technologies and equipment, the purpose of the present invention is to provide a quick repair connection device suitable for underwater replacement of pipe sections when submarine pipelines leak or are damaged. The quick repair connection device adopts the organic combination of various sealing technologies such as metal and non-metal to ensure the fixation and sealing between the connection device and the pipeline, and realizes the repair operation according to the special structure of the spherical adjustable offset type and the locking mechanism of the positioner The eccentric adjustment between mid-submarine pipelines and the automatic positioning of the connecting device have the characteristics of simple operation, short repair time and low work intensity.

The technical solution adopted by the present invention to solve its technical problems is to develop an adjustable deflection type submarine pipeline quick repair connection device, which is composed of a deflection adjuster, a propulsion body, a main sealer, a positioner and an auxiliary seal box from top to bottom. . The deviation adjuster is connected with the newly replaced subsea pipeline, while the main sealer, positioner and auxiliary sealing box are fixed with the cut pipe end. During the repair work, the quick repair connection device first passes through the deviation adjustment body of the deviation adjuster It is welded and prefabricated with the newly replaced submarine pipeline, and then hoisted into the water and connected with the cut submarine pipeline end underwater; then through the spherical fit between the deflection adjuster and the deflection adjuster seat and the spherical gaskets The combined action of the newly replaced pipe and the cut pipe completes the eccentric adjustment, and quickly tightens the adjustment bolts, relying on the clamping pressure transmitted by the deviation adjustment body, the upper ○-shaped sealing ring and the upper hexagonal metal ring are deformed And form a ○-shaped sealing ring seal and a metal ring seal; then move the entire quick repair connection device axially along the pipe, and wait for the lock pin in the locking mechanism of the locator to slide into the prefabricated annular groove of the cutting pipe to complete the connection device in cutting the pipe Then tighten the clamping studs of the positioner, relying on the thrust transmitted by the positioning body, the trapezoidal metal ring moves axially and gradually fits with the prefabricated ring surface of the cut pipe to deform, forming a trapezoidal metal ring seal; Then tighten the propulsion studs on the propelling body, extrude the rectangular metal ring, the conical metal ring and the lower hexagonal metal ring in turn and deform them to form a metal ring seal and a metal ring seal; finally tighten the auxiliary seal Each adjusting stud of the box squeezes the packing through the pressure sleeve and deforms to form a packing seal, and finally realizes the connection between the newly replaced pipe and the cut pipe.

The overall design of the quick repair connection device is a thick-walled cylindrical rotary structure, and the materials of its main components are consistent with those of the newly replaced and cut pipes. Various sealing technologies of non-metallic sealing such as sealing and packing sealing are organically combined to achieve the best sealing effect by learning from each other. Among them, the metal ring sealing technology includes rectangular metal rings, tapered metal rings and trapezoidal metal rings. The diameter of the inner surface is larger than the diameter of the prefabricated annulus of the cutting pipe. There are uniformly distributed metal wires inside each metal ring and wrapped with metal foil on the outside. The material of each metal ring body is made of metal with high strength and strong temperature resistance. , the material of the metal wire is Monel alloy, and the material of the metal foil is the same as that of the submarine pipeline.

The metal ring sealing technology includes an upper hexagonal metal ring and a lower hexagonal metal ring. The upper hexagonal metal ring contains two hexagonal metal rings arranged in parallel up and down, while the lower hexagonal metal ring has only one The upper hexagonal metal rings are placed concentrically, the cross-section of each metal ring is long hexagonal, the center line of the long cross-section of the lower hexagonal metal ring is parallel to the axis of the submarine pipeline, and the upper hexagonal metal The center line of each elongated section of the ring intersects with the axis of the submarine pipeline at the same point; each metal ring adopts a thick metal ring body, and the material of the metal ring body is made of metal with high strength and strong temperature resistance. The exterior is wrapped with metal foil, and the material of the metal foil is the same as that of the submarine pipeline.

The sealing technology of ○-shaped sealing ring includes the upper ○-shaped sealing ring and the lower ○-shaped sealing ring. The material of each ○-shaped sealing ring is made of corrosion-resistant and high-temperature resistant rubber; the packing of the packing sealing technology adopts annular packing with a rectangular cross-section. The packing is woven from carbon fibers pre-impregnated with PTFE emulsion.

The deviation adjuster realizes the eccentric adjustment between the submarine pipelines based on the spherical fit between the deviation adjustment body and the deviation adjustment seat and the joint action of each spherical gasket, and uses an upper ○-shaped sealing ring and an upper hexagonal metal ring to form a ○-shaped seal Ring seal and metal ring seal to realize the seal between the connecting device and the newly replaced pipe, which includes the deviation adjusting body, the deviation adjusting seat, the upper ○-shaped sealing ring, the upper hexagonal metal ring and the spherical gasket. The deviation adjustment body prefabricates the quick repair connection device and the new replacement pipe through welding. It adopts a structure combining a cylindrical cylinder and a spherical cylinder. The wall thickness of the upper cylindrical cylinder of the deviation adjustment body is the same as that of the new replacement pipe and cutting The wall thickness of the pipe is the same, and the diameters of the small end circles of the inner spherical surface and the outer spherical surface of the lower spherical cylinder are respectively equal to the inner diameter and outer diameter of the newly replaced pipe and the cut pipe, and at the same time, the inner and outer spherical surfaces of the spherical cylinder of the deflector are concentric and The center of the spherical surface is located on the axis of the deflector, and the outer spherical surface of the spherical cylinder is treated with anticorrosion and painting.

The inner surface of the body of the deviation adjustment seat adopts a cylindrical surface, and the diameter of the inner surface of the body is equal to the inner diameter of the newly replaced pipe, while the outer ring surface of the body adopts a spherical surface, which is the same as the inner spherical surface of the spherical cylinder of the deviation adjustment body. Carry out precision grinding treatment, and the two spherical surfaces are always kept concentric to form a spherical fit. The axial length of the spherical joint belt between the offset adjustment body and the offset adjustment seat must be greater than one-half of the height of the spherical surface of the offset adjustment seat to ensure that both Higher tightness between. The spherical surface of the offset adjustment seat is provided with annular grooves arranged in layers from top to bottom. There are three layers in total. Both are concentric with the inner and outer spherical surfaces of the deviation adjustment seat and the center of the spherical surface of the deviation adjustment seat. The cross-sections of the two layers of annular grooves on the deviation adjustment seat are the same and both adopt the shape of a combination of rectangle and isosceles trapezoid. Circular metal ring, while the cross-section of the annular groove on the bottom layer of the offset adjustment seat adopts a rectangle, and an upper ○-shaped sealing ring is arranged in it.

The lower ends of the deviation adjusting body and the deviation adjusting seat are equipped with disc flanges, and the deviation adjusting screw holes of the same size are processed around the disc flange, and the lower part of the deviation adjusting screw hole of the deviation adjusting body and the deviation adjusting screw of the deviation adjusting seat The upper part of the hole is designed with a conical hole wall, and each deviation adjustment bolt adopts a spherical gasket, and is respectively placed in the groove of the upper part of the deviation adjustment screw hole of the deviation adjustment body and the lower part of the deviation adjustment screw hole of the deviation adjustment seat to complete The connection between the adjustment body and the adjustment seat. Therefore, when eccentricity occurs between the newly replaced pipe and the cut pipe, by adjusting the spherical gaskets of each deviation adjusting bolt, and relying on the lateral force between the deviation adjusting body and the deviation adjusting seat and their spherical cooperation, the seabed can be reached. The purpose of pipe adjustment eccentricity.

The propulsion body is used to achieve axial propulsion and squeeze the metal rings and metal rings of the main seal. The upper end surface of the propulsion body is connected with the disc-shaped flange of the deflection adjuster seat by welding, and the middle part of the propulsion body is also provided with a disc-shaped flange, and the connection between the propulsion body and the main sealer is realized through the propulsion stud , and the lower end surface of the disc-shaped flange of the propelling body is provided with an annular groove, and the cross-section of the annular groove is isosceles trapezoidal. The inner surface of the propelling body adopts a stepped rotary surface structure, the diameter of the upper cylindrical surface of the inner surface is equal to the inner diameter of the newly replaced pipe, and the diameter of the lower cylindrical surface of the inner surface is equal to the diameter of the prefabricated annulus of the cut pipe. The lower part of the annular surface of the propelling body is processed with two layers of annular grooves arranged in layers. The cross-section of the annular grooves is rectangular and filled with lubricating oil. The lower part of the inner and outer annular surfaces of the propulsion body are finished, and the upper part of the outer annular surface is treated with anticorrosion and painting. In addition, the lower part of the outer annular surface of the propulsion body is transitionally fitted with the inner wall of the main seal body and with the thrust ring of the main sealer. The inner wall is clearance fit, and the lower part of the inner surface of the propulsion body is clearance fit with the prefabricated annulus of the cutting pipe, so that a friction pair is formed between the propulsion body and the main sealing body, and a moving pair is formed between the thrust ring of the main sealer and the cutting pipe.

The main sealer adopts trapezoidal metal ring, rectangular metal ring and tapered metal ring to form a metal ring seal to realize the fixation and sealing between the connecting device and the prefabricated ring surface of the cut pipe, and at the same time form a metal ring seal through the lower hexagonal metal ring, And the sealing between the propulsion body and the main sealer is realized. The main sealer mainly includes the main seal body, thrust ring, bushing, trapezoidal metal ring, rectangular metal ring, tapered metal ring and lower hexagonal metal ring. The cross-section is rectangular, while the cross-section of the tapered metal ring is a right-angled trapezoid. The upper end surface of the main seal body is processed with an annular groove of the same size as the disc flange of the propulsion body, and the annular groove of the main seal body coincides with the cylindrical surface where the centerline of the annular groove of the propulsion body is located, and the annular groove of the main seal body A lower hexagonal metal ring is arranged in the groove. The upper and lower ends of the main seal body are processed with threaded blind holes uniformly arranged along the circumferential direction, and the middle part is designed with glue injection holes evenly arranged along the circumferential direction. The axis of each glue injection hole is aligned with the axis of the main seal body. Vertical, and the hole wall of the injection hole is connected with the set screw through the internal thread. The inner surface of the main seal body is thinner at the top and thicker at the bottom, and a bushing is placed at the variable section of the inner surface, and the upper and lower ends of the inner surface are finished, while the outer ring surface of the main seal body is treated with anticorrosion and painting.

Both the thrust ring and the bushing adopt a cylindrical barrel, the section of the thrust ring is L-like, and the section of the bushing is wedge-shaped. Both the inner and outer ring surfaces of the thrust ring are finished, and the outer ring surface is transitionally matched with the inner surface of the main sealing body to form a friction pair, while the lower part of the inner surface is matched with the prefabricated ring surface of the cut pipe to form a moving pair. At the same time, a rectangular metal ring is arranged in the upper ring cavity of the thrust ring. The outer ring surface of the bushing is positioned in the cavity of the main sealing body by setting an annular clamp, and a tapered metal ring is arranged in the ring cavity of the bushing, and the middle and upper part of the bushing body is processed with glue injection with the main sealing body A round hole with the same number and size as the holes, the round hole corresponds to the glue injection hole one by one and its axis coincides. The ring body of the tapered metal ring is cut with rectangular slots corresponding to the bushing holes. The slots are parallel to the axis of the bushing, and the width of the slots is greater than the diameter of the bushing hole. The slots are filled with seals. glue. The upper part of the inner surface of the bushing adopts an inverted conical surface. The taper of the inverted conical surface is equal to the taper of the outer conical surface of the conical metal ring and is greater than the equivalent friction angle between the inner wall of the bushing and the conical metal ring. The cone of the inverted conical surface The height is greater than the height of the tapered metal ring, and the lower part of the inner surface of the bushing also cooperates with the clearance of the prefabricated annulus of the cutting pipe to form a moving pair. The lower end surface of the bushing is designed as a conical surface, together with the conical surface on the upper end of the positioning body, it forms an isosceles trapezoidal ring chamber and accommodates the trapezoidal metal ring.

The positioner realizes the automatic positioning of the entire connecting device on the cutting pipe according to its locking mechanism. It includes a positioning body and a locking mechanism. A gasket is used to assist sealing between the positioning body and the main sealing body. The positioning body consists of two parts, the upper cylinder and the lower cylinder, wherein the outer ring surface of the upper cylinder is in transition fit with the inner wall of the main sealing body, and the taper and cone height of the upper end of the cone are the same as the taper and cone of the lower end of the bushing. The same height; the outer ring surface of the lower cylinder of the positioning body is anti-corrosion and painted, and its diameter is the same as the outer diameter of the disc flange of the deviation adjustment body and the deviation adjustment seat, the outer diameter of the disc flange of the propulsion body and the main seal body The diameters of the outer ring surface are all equal; at the same time, there are clamping screw holes arranged in groups around the lower cylinder, each group has three clamping screw holes, and the clamping screw holes are drilled into circular through holes. The post enables the fixation of the locator on the main sealer. The inner surface of the positioning body is in clearance fit with the prefabricated annulus of the cutting pipe, and the lower part of the inner surface realizes the connection between the positioner and the auxiliary sealing box through threads; the middle part of the positioning body is processed with lock holes uniformly arranged along the circumferential direction, and There is a locking mechanism inside, and the lock holes and each group of clamping screw holes on the lower cylinder of the positioning body are arranged alternately in sequence. The axis of each lock hole is perpendicular to the axis of the positioning body, and the hole walls of each lock hole are finished. , and the outermost hole wall is threaded.

The locking mechanism realizes the fast locking function of the connecting device. It is composed of a lock pin, a spring and a cover. Both the lock pin and the cover adopt a stepped shaft, and the ring surface of the outer cylinder of the cover is threaded to fix the locking mechanism on the On the positioning body, a hexagonal blind hole is processed in the central part to facilitate the disassembly of the cover. The joint of the end faces of the inner cylinder of the cover forms a shaft shoulder; the ring surface of the cylinder of the lock pin and the hole wall of the corresponding positioning body lock hole A moving pair is formed between them, and the inner cylinder of the lock pin is processed with a wedge-shaped groove, and the shoulder at the junction of the end face of the outer cylinder and the shoulder of the cover are co-located and run through the spring inside, thus completing the lock pin. Radial telescopic movement.

The auxiliary sealing box adopts the packing and the lower ○-shaped sealing ring to form the packing seal and the ○-shaped sealing ring to realize the fixing and sealing between the connecting device and the original annulus of the cutting pipe. It includes the auxiliary sealing body, the pressure sleeve, and the lower ○-shaped Seals and packing. The outer ring surface of the auxiliary sealing body is machined with sealing pipe threads, and the surroundings of the lower end surface are drilled with adjusting screw holes uniformly arranged along the circumferential direction, and the axial advancement of the pressure sleeve is realized by adjusting the studs; the auxiliary sealing body The upper chamber is processed with an annular groove. The cross section of the annular groove is rectangular, and a lower ○-shaped sealing ring is arranged inside, while the lower chamber of the auxiliary sealing body is filled with packing, and the wall of the lower chamber is in contact with the outer surface of the gland. A transition fit is used between the ring surfaces to form a friction pair. The outer ring surface of the pressure sleeve is finished, and the diameter of its inner surface is equal to the outer diameter of the cut pipe. The lower end of the pressure sleeve adopts a disc flange, and the diameter of the disc flange is equal to the diameter of the outer ring surface of the auxiliary sealing body .

The technical effect that the present invention can achieve is that the quick repair connecting device adopts a variety of sealing technologies such as metal and non-metal to organically combine to ensure the fixing and sealing between the connecting device and the pipeline, and is based on the special structure and The locking mechanism of the locator realizes the eccentric adjustment between the submarine pipelines and the automatic positioning of the connecting device during the repair operation; eccentric adjustment, and use ○-shaped sealing ring seal and metal ring seal to realize the sealing between the connecting device and the newly replaced pipe; The trapezoidal metal ring, rectangular metal ring and tapered metal ring are used to form a metal ring seal to realize the fixation and sealing between the connecting device and the prefabricated ring surface of the cut pipe, and at the same time realize the sealing between the propulsion body and the main sealer through the metal ring seal ;The locator completes the automatic positioning of the connecting device on the cutting pipe according to its locking mechanism, and the auxiliary sealing box adopts packing seal and ○-shaped sealing ring to realize the fixing and sealing between the connecting device and the original annulus of the cutting pipe, thus making the The quick repair connection device has the characteristics of simple operation, short repair time and low work intensity.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

Fig. 1 is a schematic diagram of a typical structure of an adjustable deflection type subsea pipeline quick repair connection device proposed according to the present invention.

Fig. 2 is a schematic diagram of the structure of the deflection adjuster in the quick repair connection device for the adjustable deflection submarine pipeline.

Fig. 3 is a schematic structural diagram of the propelling body in the quick-repair connection device for the adjustable deflection submarine pipeline.

Fig. 4 is a schematic structural diagram of the main sealer in the quick repair connection device of the adjustable deflection submarine pipeline.

Figure 5 is a schematic diagram of the internal components of the main sealer.

Fig. 6 is a schematic diagram of the structure of the positioner and the auxiliary sealing box in the quick repair connection device of the adjustable deflection submarine pipeline.

Fig. 7 is a cross-sectional view along line A-A of Fig. 6 .

Fig. 8 is a schematic diagram of the eccentric adjustment operation flow of the adjustable eccentric quick repair connection device for submarine pipelines.

Fig. 9 is a schematic flow chart of the main sealing operation of the quick repair connection device for the adjustable deflection submarine pipeline.

Fig. 10 is a schematic diagram of the auxiliary sealing operation flow of the quick repair connection device for the adjustable deflection submarine pipeline.

In the figure, 1 - deflection adjuster, 2 - propulsion body, 3 - main sealer, 4 - positioner, 5 - auxiliary sealing box, 6 - deflection adjuster, 7 - upper hexagonal metal ring, 8 - upper ○ type Sealing ring, 9-adjustment bolt, 10-spherical gasket, 11-adjustment seat, 12-propelling stud, 13-lower hexagonal metal ring, 14-rectangular metal ring, 15-thrust ring, 16-cone Shaped metal ring, 17-set screw, 18-bushing, 19-trapezoidal metal ring, 20-main seal body, 21-positioning body, 22-block cover, 23-spring, 24-lock pin, 25-clamping Stud, 26-adjusting stud, 27-pressure sleeve, 28-auxiliary sealing body, 29-packing, 30-lower ○ type sealing ring, 31-locking mechanism.

detailed description

In FIG. 1 , the adjustable deflection-type subsea pipeline quick repair connection device is composed of a deflection adjuster 1 , a propulsion body 2 , a main sealer 3 , a positioner 4 and an auxiliary sealing box 5 . Before the quick repair connection device is assembled, the outer surfaces of the main parts of the deflection adjuster 1, the propulsion body 2, the main sealer 3 and the positioner 4 are respectively subjected to anti-corrosion and painting treatment; the spherical joint of the deflection adjuster 1 should rotate flexibly in any direction And there is no blockage, the propulsion body 2 and the main sealer 3, the positioner 4 and the main sealer 3, and the auxiliary sealing box 5 gland and the auxiliary sealing body can move flexibly, and the locking mechanism of the positioner 4 can slide normally. And keep the cavity of the main sealer 3, positioner 4 and auxiliary seal box 5 clean; at the same time, check whether there are any defects and damages in the metal rings, metal rings, ○-shaped sealing rings and packing, and check whether the threaded joints are firm and secure. There is no rust.

In Fig. 1, when the quick repair connection device is assembled, the deviation adjuster 1 and the newly replaced pipeline are connected through the welding of the deviation adjustment body, and the propulsion body 2 is fixed on the deviation adjustment seat of the deviation adjuster 1 by welding. The body 2 and the main sealer 3 are connected by a push stud, while the main sealer 3 and the locator 4 are connected by a clamping stud, and the auxiliary sealing box 5 is positioned on the locator by a sealing pipe thread 4 on.

In Figure 1, when the quick repair connection device is in operation, the submarine pipeline is eccentrically adjusted by the deflection adjuster 1, and the newly replaced pipeline and the connection device are sealed by the ○-shaped sealing ring and the metal ring seal formed by tightening the deflection adjustment bolt. Sealing, the connecting device is positioned on the cutting pipeline through the locking mechanism of the locator 4, and the trapezoidal metal ring formed by tightening the clamping stud of the locator 4 is used to seal and tighten the propelling body between the connecting device and the prefabricated annulus of the cutting pipeline 2 Push the metal ring seal formed by the stud and the metal ring seal to fix and seal, and the packing seal formed by tightening the auxiliary sealing box 5 to adjust the stud is fixed and sealed between the connecting device and the original ring surface of the cutting pipeline.

In Fig. 2, the diameter of the inner surface of the deviation adjusting body 6 and the deviation adjusting seat 11 of the deviation adjusting device 1 is adjusted according to the inner diameter of the submarine pipeline, and at the same time, the wall thickness of the deviation adjusting body 6 cavity is consistent with the wall thickness of the submarine pipeline. The specifications of the upper hexagonal metal ring 7 and the upper ○-shaped sealing ring 8 are selected according to the properties of the oil and gas medium in the submarine pipeline and the maximum delivery pressure, and the number and thread strength of the deviation adjustment bolts 9 are based on the deviation adjustment body 6 and the deviation adjustment seat 11 Design the pressure required to clamp the upper hexagonal metal ring 7 and the upper ○-shaped sealing ring 8 to produce deformation, and finally select the spherical gasket 10 according to the designed specification of the deviation adjustment bolt 9 . The submarine pipeline completes the eccentricity adjustment through the spherical fit between the deviation adjustment body 6 and the deviation adjustment seat 11 and the joint action of each spherical gasket 10. The deviation adjustment body 6 and the deviation adjustment seat 11 are connected by the deviation adjustment bolt 9 and the upper six Edge metal ring 7 and upper ○ type sealing ring 8 realize sealing.

In Fig. 3, the diameter of the inner surface of the propulsion body 2 is adjusted according to the inner diameter and outer diameter of the subsea pipeline, and the number and thread strength of the propulsion studs 12 are based on the thrust required to squeeze the metal ring of the main seal 3 and the metal ring to produce deformation According to the design, the propulsion body 2 realizes axial propulsion by tightening each propulsion stud 12 .

4 and 5, the lower hexagonal metal ring 13, rectangular metal ring 14, thrust ring 15, tapered metal ring 16, bushing 18, trapezoidal metal ring 19 and main sealing body 20 of the main sealer 3 The diameter of the inner surface is adjusted according to the outer diameter of the submarine pipeline. The wall thickness of the main sealing body 20 is designed according to the radial thrust generated by the deformation of the rectangular metal ring 14, the tapered metal ring 16 and the trapezoidal metal ring 19. The rectangular metal ring 14, The specifications of the conical metal ring 16 and the trapezoidal metal ring 19 are selected according to the properties and maximum delivery pressure of the oil and gas medium in the submarine pipeline, and the specifications of the lower hexagonal metal ring 13 are selected according to the physical properties and pressure of the seawater around the submarine pipeline.

In Fig. 4 and Fig. 5, the lower hexagonal metal ring 13 and the rectangular metal ring 14 of the main sealer 3 are deformed by extrusion of the cylinder part at the lower part of the propelling body 2 to form a seal, while the conical metal ring 16 is formed by The axial thrust transmitted by the thrust ring 15 and the extrusion force of the bushing 18 are deformed and combined with the sealant to form a seal; the glue injection operation is completed on the water line, and the sealant is injected through the injection holes of the main seal body 20 and sealed. Guarantee that it is full of each slit of tapered metal ring 16, screw on each set screw 17 at last.

In Fig. 6 and Fig. 7, the diameter of the inner surface of the positioning body 21 of the positioner 4 is adjusted according to the outer diameter of the submarine pipeline, and the diameter of the outer ring surface of the positioning body 21 is consistent with the diameter of the outer ring surface of the main sealing body 20, The quantity and thread strength of the clamping studs 25 are designed according to the thrust required by the positioning body 21 to squeeze the trapezoidal metal ring 19 to generate deformation. The trapezoidal metal ring 19 is deformed by the axial thrust transmitted by the cylinder on the positioning body 21 and the extrusion force of the bushing 18 to form a seal. The locking mechanism 31 of the positioner 4 passes through the shoulder of the cover 22 and 24 lock pins. The spring 23 co-located with the shoulders completes the radial telescopic movement of the locking pin 24, thereby realizing the automatic positioning of the entire connecting device on the cutting pipe, and the locking mechanism 31 and each group of clamping studs 25 are alternately arranged in turn along the circumferential direction.

In Fig. 6 and Fig. 7, the diameter of the inner surface of the gland 27 of the auxiliary sealing box 5 and the inner surface of the auxiliary sealing body 28, as well as the inner diameter of the packing 29 and the lower ○-shaped sealing ring 30 are all adjusted according to the outer diameter of the submarine pipeline, and the positioning body 21 and auxiliary sealing body 28, the strength of the pipe thread and the specifications of the packing 29 and the lower ○-shaped sealing ring 30 are selected according to the physical properties and pressure of the seawater around the submarine pipeline, while the quantity and thread strength of the adjusting studs 26 are based on The pressing sleeve 27 compresses the packing 29 to produce the thrust required for deformation to be designed. The packing 29 is deformed by pressing the pressure sleeve 27 to form a seal, while the lower ○-shaped sealing ring 30 is deformed by co-extruding the annular groove of the auxiliary sealing body 28 and the original annular surface of the cut pipe to form a seal.

In Fig. 8, the eccentricity adjustment process of the quick repair connection device is that the deviation adjustment body 6 of the deviation adjustment device 1 is connected with the deviation adjustment seat 11 through the deviation adjustment bolt 9 and the spherical gasket 10, and the deviation adjustment bolt 9 is kept In a loose state, when the eccentricity of θ occurs between the newly replaced pipe and the cut pipe, by adjusting the spherical gasket 10 of each deviation adjustment bolt 9, relying on the lateral force between the deviation adjustment body 6 and the deviation adjustment seat 11 and their spherical cooperation Self-adjustment, adjust the angle between the newly replaced pipeline and the cut pipeline to θ, so that the axes of the submarine pipeline at both ends of the newly replaced pipeline remain parallel, and finally quickly tighten the deviation adjustment bolts 9, relying on the clamping force transmitted by the deviation adjustment body 6 Two upper hexagonal metal rings 7 and one upper ○-shaped sealing ring 8 are deformed respectively to form a ○-shaped sealing ring seal and a metal ring seal to ensure the sealing between the newly replaced pipeline and the connecting device, and complete the sealing of the submarine pipeline. Eccentric adjustment.

In Fig. 9, the main sealing operation process of the quick repair connection device is that the main sealer 3, the positioner 4 and the auxiliary seal box 5 of the whole quick repair connection device move axially along the outer ring surface of the pipe end of the cut pipe, and lock The shaft shoulder of the pin 24 and the shaft shoulder of the blocking cover 22 jointly locate the spring 23 and thereby complete the radial telescopic movement of the locking pin 24, and the locking pin 24 in the locking mechanism 31 of the positioner 4 slides into the prefabricated annular groove of the cutting pipe After the slot, the connecting device is stuck on the cutting pipe and completes its automatic positioning; then, first tighten each clamping stud 25 of the positioner 4, relying on the thrust transmitted by the positioning body 21, the trapezoidal metal in the main sealer 3 The ring 19 moves axially and gradually deforms after being fitted with the prefabricated ring surface of the cut pipe to form a trapezoidal metal ring seal; then, tighten the propulsion studs 12 on the propulsion body 2, and rely on the lower cylinder of the propulsion body 2 to squeeze The rectangular metal ring 14 in the main sealer 3 is deformed to form a rectangular metal ring seal; then, the propelling body 2 continues to move axially, relying on the thrust transmitted by the thrust ring 15 and the extrusion force of the bushing 18, the main sealer 3 The tapered metal ring 16 in the pipe is deformed and combined with the sealant to form a tapered metal ring seal, thereby ensuring the sealing between the prefabricated ring surface of the cut pipe and the connecting device; finally, the propulsion body 2 continues to move axially to its annular groove Clamp into the lower hexagonal metal ring 13 in the main sealer 3, and squeeze the lower hexagonal metal ring 13 to deform to form a metal ring seal, to ensure the seal between the propulsion body 2 and the main sealer 3, and complete the main seal Operation.

In Fig. 10, the auxiliary sealing operation process of the quick repair connection device is as follows: each adjusting screw 26 of the auxiliary sealing box 5 is tightened, and the thrust transmitted by the pressure sleeve 27 squeezes the packing 29 and deforms to form a packing Sealing, to ensure the sealing between the original annulus of the cutting pipe and the connecting device, and complete the auxiliary sealing operation, so as to realize the connection between the newly replaced pipe and the cutting pipe according to the connecting device.

Above-mentioned each embodiment is only for illustrating the present invention, wherein the structure of each component, connection mode etc. all can be changed to some extent, every equivalent conversion and improvement carried out on the basis of the technical solution of the present invention, all should not be excluded from the present invention. outside the scope of protection of the invention.

Claims (10)

1. connecting device quickly repaired by a deviation adjustable type submarine pipeline, from top to down successively by device for adjusting deviation, pushing body, primary seal device, localizer and auxiliary seal box composition, its global design is heavy wall tubular revolving body structure, it adopts the multiple Sealing Technology of the metal sealing such as quoit and becket and the nonmetal sealing such as the sealing of zero RunddichtringO and packing seal to organically combine simultaneously, ensure connecting device and the fixing of pipeline enclosure and sealing, and the retaining mechanism of the special tectonic of foundation sphere deviation adjustable type and localizer, realize in repair being automatically positioned of the eccentric adjusting between submarine pipeline and connecting device, it is characterized in that:

One device for adjusting deviation；The tuningout body of described device for adjusting deviation adopts the structure that column-shaped barrel and spherical cylinder combine, and concentric and inside and outside spherical surface the centre of sphere of the inside and outside spherical surface of its spherical cylinder is respectively positioned on the axis of device for adjusting deviation；The body outer ring surface of tuningout seat adopts the Internal Spherical Surface of Surface of Sphere, this Surface of Sphere and the spherical cylinder of tuningout body all to carry out precise finiss process, and two spheres remain concentric and constitute mating spherical surfaces；The Surface of Sphere of tuningout seat is from top to bottom provided with the ring-shaped groove of layered arrangement, identical and that all employing rectangle and isosceles trapezoid the combine shape in the cross section of upper two layers ring-shaped groove, upper hexagonal metallic ring is configured successively in it, and the cross section of tuningout seat orlop ring-shaped groove adopts rectangle, in it, configure upper zero RunddichtringO；Each tuningout bolt all adopts spherical washer, and is respectively implanted in the groove of tuningout body tuningout screw top and tuningout seat tuningout screw bottom；

One pushing body；The plate-like flange lower surface of described pushing body arranges ring-shaped groove, and the cross section of this ring-shaped groove is isosceles trapezoid, and the inner surface of pushing body adopts ladder surface of revolution structure, and the processing of the bottom of its outer ring surface has the annular groove of layered arrangement；Friction pair is formed, simultaneously and form moving sets between primary seal device thrust ring and cutting pipeline between pushing body and primary seal body；

One primary seal device；The cross section of the trapezoidal quoit of described primary seal device is isosceles trapezoid, the rectangular in cross-section of rectangular metal circle, and the cross section of cone-shaped metal circle is then at right angles trapezoidal；The upper surface processing of primary seal body has and the ring-shaped groove of pushing body plate-like flange same size size, the lower hexagonal metallic ring of configuration in this ring-shaped groove, the middle part design of primary seal body has along the circumferential direction evenly distributed injecting glue eyelet, the inner surface of primary seal body is up-thin-low-thick, and lining is placed at the variable cross-section place of its inner surface；Thrust ring and lining all adopt column-shaped barrel, and the cross section of thrust ring is the shape of class L, and the cross section of lining is then wedge shaped；The inner surface interference fits of the outer ring surface of thrust ring and primary seal body to form friction pair, the bottom of its inner surface then with cut pipe prefabrication anchor ring matched in clearance to form moving sets；The middle and upper part processing of lining cylinder has the circular hole with primary seal body injecting glue eyelet equal number and specification size, and the circle body of cone-shaped metal circle cuts the rectangle slot corresponding with lining circular hole, is full of fluid sealant in slot；The top of sleeve inner surface adopts the rounding conical surface, and the bottom of its inner surface forms moving sets with cutting pipe prefabrication anchor ring matched in clearance, and the lower surface of lining is designed as taper seat simultaneously；

One localizer；The locating bodies of described localizer is containing upper shell and lower shell two parts, the wherein clamping screw being formed around packet arrangement of lower shell, the middle part processing of locating bodies has lockhole evenly distributed in the circumferential direction, accommodating retaining mechanism in lockhole, lockhole is staggered successively with each group clamping screw on locating bodies lower shell；The lock pin of retaining mechanism and door all adopt multidiameter, form moving sets, and inside lock pin, on cylinder, processing has wedge groove between the cylinder anchor ring of lock pin with the hole wall of corresponding locating bodies lockhole；

One auxiliary seal box；The auxiliary seal body upper chamber processing of described auxiliary seal box has ring-shaped groove, the cross section of this ring-shaped groove adopts rectangle, lower zero RunddichtringO of configuration in it, and in the lower chamber of auxiliary seal body, fill packing, and interference fits between the outer ring surface of its underpart chamber wall and gland, is adopted to form friction pair.

2. connecting device quickly repaired by deviation adjustable type submarine pipeline according to claim 1, it is characterized in that: described deviation adjustable type submarine pipeline is quickly repaired the quoit Sealing Technology of connecting device and included rectangular metal circle, cone-shaped metal circle and trapezoidal quoit, rectangular metal circle, cone-shaped metal circle and trapezoidal quoit from top to bottom sequentially coaxially the heart be arranged in cutting pipe prefabrication anchor ring on and its inner surface diameter be all higher than cutting pipe prefabrication anchor ring diameter, each quoit is internally provided with equally distributed tinsel and its outer wrap has tinsel, the material of each quoit body all adopts the metal that intensity is high and heat resistance is strong；

Described deviation adjustable type submarine pipeline is quickly repaired the metal loop seals technology of connecting device and is included hexagonal metallic ring and lower hexagonal metallic ring, upper hexagonal metallic ring is containing about two the hexagonal metallic rings being arranged in parallel, and lower hexagonal metallic ring only has one and places with each upper hexagonal metallic ring concentric, the cross section of each becket is all in Long Hexagon, the centrage in the lower elongated cross section of hexagonal metallic ring is paralleled with the axis of submarine pipeline, and the centrage in each elongated cross section of upper hexagonal metallic ring then all meets at same point with the axis of submarine pipeline；Each becket adopts crude metal ring body, and the material of its becket body all adopts the metal that intensity is high and heat resistance is strong, is all enclosed with tinsel outside each becket；

Described deviation adjustable type submarine pipeline is quickly repaired zero RunddichtringO Sealing Technology of connecting device and is included zero RunddichtringO and lower zero RunddichtringO, and the material of each zero RunddichtringO all selects corrosion-resistant and high-temperature resistant sizing material；The filler of packing seal technology adopts annular packing, and its cross section is rectangle, and packing is woven by the carbon fibre of preimpregnation ptfe emulsion and forms.

3. connecting device quickly repaired by deviation adjustable type submarine pipeline according to claim 1, it is characterized in that: the wall thickness of the tuningout body top column-shaped barrel of described device for adjusting deviation is identical with the wall thickness of new replacing pipeline and cutting pipeline, and the small end disc diameter of its underpart spherical cylinder Internal Spherical Surface and spherical outside surface is equal with the new internal diameter changing pipeline and cutting pipeline and external diameter respectively；

The body internal surface of described tuningout seat adopts the inner surface diameter of the face of cylinder and its body equal to the new internal diameter changing pipeline, and the sphere between tuningout body and tuningout seat combines the axial length of band need to more than 1/2nd of tuningout seat Surface of Sphere height；

On the Surface of Sphere of described tuningout seat, each layer ring-shaped groove is all along the Surface of Sphere slant setting of tuningout seat, and the conical point of each layer ring-shaped groove centrage place conical surface all keeps concentric with the centre of sphere of tuningout inside and outside sphere and tuningout seat Surface of Sphere.

4. connecting device quickly repaired by the deviation adjustable type submarine pipeline according to claim 1 or 3, it is characterized in that: described tuningout body is respectively provided with the surrounding of plate-like flange and its plate-like flange and processes the tuningout screw having specification size identical with the lower end of tuningout seat, and the bottom of tuningout body tuningout screw and the top of tuningout seat tuningout screw are designed with the hole wall of cone；

When new replacing pipeline and cutting pipeline enclosure produce eccentric, by adjusting the spherical washer of each tuningout bolt, and rely on the side force between tuningout body and tuningout seat and mating spherical surfaces thereof from Row sum-equal matrix, and reach the purpose of submarine pipeline eccentric adjustment.

5. connecting device quickly repaired by deviation adjustable type submarine pipeline according to claim 1, it is characterized in that: the upper surface of described pushing body is connected by the plate-like flange welded with device for adjusting deviation tuningout seat, the middle part simultaneously advancing body is also equipped with plate-like flange, and by advancing stud to realize coupling between pushing body with primary seal device；

The diameter of the inner surface top cylinder of described pushing body is equal with the new internal diameter changing pipeline, the diameter of inner surface bottom cylinder then with the equal diameters of cutting pipe prefabrication anchor ring；The rectangular in cross-section of the annular groove of pushing body outer ring surface and its interior full lubricating oil, the bottom simultaneously advancing inside and outside anchor ring all carries out polish；

The bottom of described pushing body outer ring surface coordinate with the internal wall transitions of primary seal body and with the inwall matched in clearance of primary seal device thrust ring, the bottom of pushing body inner surface then with cutting pipe prefabrication anchor ring matched in clearance.

6. connecting device quickly repaired by deviation adjustable type submarine pipeline according to claim 1, it is characterized in that: described primary seal device adopts trapezoidal quoit, rectangular metal circle and cone-shaped metal circle to seal to form quoit, realize the fixing and sealing between connecting device and cutting pipe prefabrication anchor ring, form metal loop seals by lower hexagonal metallic ring simultaneously, and realize the sealing between pushing body and primary seal device；

The cylinder at the ring-shaped groove of described primary seal body and the ring-shaped groove centrage place of pushing body overlaps；

The axis of each injecting glue eyelet of described primary seal body all with the axis perpendicular of primary seal body, and the hole wall of injecting glue eyelet coupled with holding screw by female thread.

7. connecting device quickly repaired by deviation adjustable type submarine pipeline according to claim 1, it is characterised in that: the inside and outside anchor ring of described thrust ring all carries out polish, simultaneously configuration rectangular metal circle in the top ring cavity of thrust ring；

The outer ring surface of described lining is positioned by arranging ring-shaped clip in the chamber of primary seal body, configuration cone-shaped metal circle in the ring cavity of lining, and the circular hole of lining cylinder middle and upper part and injecting glue eyelet one_to_one corresponding and its dead in line；

The slot opening of described cone-shaped metal circle is parallel with busing axis, and the width of slot is more than the diameter of lining circular hole；

The tapering of the rounding conical surface of described sleeve inner surface is simultaneously greater than the equivalent friction angle between lining inwall and cone-shaped metal circle equal to the tapering of cone-shaped metal circle male cone (strobilus masculinus), and the cone Gao Ze of this rounding conical surface is more than the height of cone-shaped metal circle；

The lower surface of described lining constitutes ring cavity that cross section is isosceles trapezoid together with the conical surface of locating bodies upper end and holds trapezoidal quoit.

8. connecting device quickly repaired by deviation adjustable type submarine pipeline according to claim 1, it is characterized in that: described localizer includes locating bodies and retaining mechanism, the outer ring surface of locating bodies upper shell coordinates with the internal wall transitions of primary seal body, and the tapering of its upper end conical surface is high with cone all identical with the tapering of lining lower surface and cone height；

The diameter of the lower shell outer ring surface diameter of described locating bodies and tuningout body and the external diameter of tuningout attic base shape flange, the external diameter of pushing body plate-like flange and primary seal body outer ring surface is all equal；The simultaneously clamping circular through hole of tap drill of its lower shell surrounding realize localizer fixing on primary seal device by arranging clamping stud；

The inner surface of described locating bodies and cutting pipe prefabrication anchor ring matched in clearance；

Each lockhole axis of described locating bodies all with the axis perpendicular of locating bodies, the hole wall of each lockhole carries out polish.

9. connecting device quickly repaired by deviation adjustable type submarine pipeline according to claim 1, it is characterized in that: the retaining mechanism of described localizer is made up of lock pin, spring and door, outside door, retaining mechanism is fixed on locating bodies by screw thread by the anchor ring of cylinder, and inside door, the end face junction of cylinder forms the shaft shoulder；

Outside the lock pin of described retaining mechanism, the shaft shoulder of cylinder end face junction and the shaft shoulder of door are positioned through its interior spring jointly, thus complete the radial expansion motion of lock pin.

10. connecting device quickly repaired by deviation adjustable type submarine pipeline according to claim 1, it is characterized in that: described auxiliary seal box adopts packing and lower zero RunddichtringO to seal to form packing seal and zero RunddichtringO, it is achieved fixing and sealing between connecting device and the cutting former anchor ring of pipeline；

The outer ring surface of described auxiliary seal body is got on the bus and is shaped with sealing pipe screw thread, and the surrounding of its lower surface is drilled with adjustment screw evenly distributed in the circumferential direction, and realizes the axial propelling of gland by regulating stud；

The outer ring surface of described gland carries out polish, and the diameter of its inner surface is equal to the external diameter of cutting pipeline；

The lower end of described gland adopts the outer ring surface equal diameters of disc shaped flange, the diameter of this disc shaped flange and auxiliary seal body.