CN113819321B - Hard pipe connecting device and manifold system thereof - Google Patents
Hard pipe connecting device and manifold system thereof Download PDFInfo
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- CN113819321B CN113819321B CN202111064542.1A CN202111064542A CN113819321B CN 113819321 B CN113819321 B CN 113819321B CN 202111064542 A CN202111064542 A CN 202111064542A CN 113819321 B CN113819321 B CN 113819321B
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- 210000001503 joint Anatomy 0.000 claims abstract description 45
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 238000007789 sealing Methods 0.000 claims description 26
- 238000005452 bending Methods 0.000 claims description 12
- 239000012530 fluid Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 10
- 238000004891 communication Methods 0.000 claims description 8
- 239000003208 petroleum Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 239000003345 natural gas Substances 0.000 abstract description 3
- 239000003209 petroleum derivative Substances 0.000 abstract 1
- 230000001502 supplementing effect Effects 0.000 description 5
- 230000006978 adaptation Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints; Joints allowing movement
- F16L27/02—Universal joints, i.e. with mechanical connection allowing angular movement or adjustment of the axes of the parts in any direction
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to the technical field of petroleum and natural gas drilling equipment, in particular to a hard pipe connecting device which comprises at least one non-concentric connecting pipe joint, wherein the non-concentric connecting pipe joint comprises a pipe body and first flanges arranged at two ends of the pipe body, the two first flanges are parallel to each other, the axes of the two first flanges are provided with distance differences H, H is more than 0, and a plurality of non-concentric connecting pipe joints are in butt joint combination with different numbers and different arrangement structures, so that the hard pipe connecting device can be suitable for smooth connection of to-be-connected surfaces with different radial distance differences in space, has wider application range and is suitable for more application scenes.
Description
Technical Field
The invention relates to the technical field of oil and natural gas drilling equipment, in particular to a hard pipe connecting device and a manifold system thereof.
Background
In the field of oil, gas and other subterranean resource recovery, in order to facilitate recovery of oil, gas and other subterranean resources, it is often necessary to employ a drilling and production system to extract the resources through a drilling and production well deep into the formation, which may be subjected to a fracturing process that creates one or more artificial fractures in the formation, such fracturing process typically comprising injecting a fracturing fluid, often a mixture comprising sand and water, into the well to increase the pressure of the well and form the artificial fractures, the fracturing fluid typically being conveyed through a fracturing manifold to one or more wellhead via a fracturing line, but the fracturing line connecting between the fracturing manifold and wellhead, the fracturing pump and the fracturing manifold is typically large and heavy, making adjustment of the connection between the fracturing manifold and wellhead very difficult.
At present, a high-pressure union pipeline is generally adopted for a fracturing pipeline of the ground part of the domestic fracturing site, the high-pressure union pipeline is composed of multiple unions and multiple elbows, the union threaded connection and the flange rigid connection are adopted, and the following defects mainly exist in the prior art:
1. when the screw thread is installed, hammering is needed, so that the screw thread is easy to damage and break, and the safety performance is poor;
2. the length of the fracturing pipeline and the installation positions of the connecting surfaces at the two ends of the fracturing pipeline cannot be accurately preset due to the differences of the actual distances among each well, the well heads and the fracturing manifolds, the actual distances among the fracturing pumps and the fracturing manifolds and the installation positions of the connecting surfaces to be connected, so that the fracturing pipeline cannot be uniformly prepared and the on-site adjustment is needed;
3. when the distance or the azimuth needs to be adjusted, the rigid connection is adopted, the pipeline is generally subjected to 90-degree steering at least twice through the addition of the angle pipe and the straight pipe, the process is complex, time and labor are wasted, the working efficiency is reduced, the fluid is steered for multiple times, and great inconvenience is brought to equipment installation and smooth fluid conveying.
Therefore, a technical solution is needed to solve the above technical problems.
Disclosure of Invention
The invention aims at: the hard pipe connecting device and the manifold system thereof are provided for solving the technical problems that the existing fracturing pipeline is poor in safety performance, more in connecting parts, and difficult in distance and angle adjustment, and the convenient and quick effective connection between the parts cannot be guaranteed.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a hard tube connecting device, includes at least one non-concentric junction tube festival, the non-concentric junction tube festival includes the body and sets up the first ring flange at body both ends, two first ring flange is parallel to each other, two the axis of first ring flange has distance difference h, h > 0.
According to the hard pipe connecting device, the non-concentric connecting pipe joint is adopted, the non-concentric connecting pipe joint rotates along the end face of the first flange plate at one end, the position of the end face of the first flange plate at the other end in a plane can be changed, the hard pipe connecting device can realize smooth connection of surfaces to be connected with radial distance differences in space, a plurality of non-concentric connecting pipe joints can be adopted for butt joint combination with different numbers and different arrangement structures according to actual conditions, and the hard pipe connecting device can be suitable for smooth connection of the surfaces to be connected with different radial distance differences in space, is wide in application range and is suitable for multiple application scenes.
Specifically, one non-concentric connecting pipe joint is equivalent to a vector which can be rotated randomly and has the size of e, the superposition of the two non-concentric connecting pipe joints is realized, vector synthesis is realized, after the two non-concentric connecting pipe joints are in butt joint connection, the final track coverage of the first flanges at the two ends of the assembly is the whole circle with the radius of 2e, the maximum adjustment range can reach twice the height difference of the circle centers of the first flanges at the two ends of the assembly, the adjustment range is wider, the adjustment of the wider connection range of the hard pipe connecting device can be realized under the condition that the liquid flow is not influenced, and the connecting components for flow passage steering such as elbows are reduced, so that the liquid flow is smoother.
As the preferable scheme of the invention, the invention further comprises at least one universal connection pipe joint, wherein the universal connection pipe joint comprises a pipe joint main body and second flanges arranged at two ends of the pipe joint main body, the planes of the end surfaces of the two second flanges can form an included angle M which is smaller than 90 degrees, and the non-concentric connection pipe joint is in butt joint communication or pipeline communication with the universal connection pipe joint. Adopt universal joint pipe section, rotate universal joint pipe section along one end second ring flange terminal surface, can realize the orientation change of other end second ring flange in the space, make this hard tube connecting device can realize having the orientation in space to be connected smoothly of the poor face of waiting to connect, can adopt a plurality of non-concentric joint pipe sections and universal joint pipe section to carry out different quantity, the butt joint combination of different arrangement structure according to actual conditions, make this hard tube connecting device can adapt to the smooth connection of waiting to connect of the face that the space has different orientations, different radial distance differences simultaneously, accommodation is wider, adaptation application scenario is more.
As a preferred embodiment of the present invention, an end face of one of the second flanges of the universal joint pipe is perpendicular to an axis of the pipe joint main body. When two universal connecting pipe joints are in butt joint through the inclined second flanges, the two adjacent universal connecting pipe joints can be changed in space orientation, and the two end faces can be rotated to be parallel to each other, so that the hard pipe connecting device is suitable for smooth connection of the surfaces to be connected with position deviation and smooth connection of the surfaces to be connected without position deviation.
As a preferred scheme of the invention, a rotary sealing element is arranged between the first flange plate and the pipe body, and/or a rotary sealing element is arranged between the second flange plate and the pipe joint main body. The arrangement of the rotary sealing piece enables the first flange plate to rotate relative to the pipe body, and the second flange plate can rotate relative to the pipe joint main body, so that the first flange plate and the second flange plate can realize the position adaptation of the connecting holes with the surface to be connected, and the smooth connection of the surface to be connected is further facilitated.
As a preferable scheme of the invention, the rotary sealing piece comprises a compensating core and a plurality of steel balls, wherein the steel balls are arranged at the rear side of the bearing end face of the compensating core, the pipe body and/or the pipe joint main body are/is provided with mounting grooves matched with the steel balls, the compensating core comprises a bending section, the pipe body and/or the pipe joint main body are/is provided with a notch matched with the bending section, and the bending section stretches into the notch. The steel ball is used for assisting the relative rotation between the flange plate and the pipe body, the compensating core is used for blocking foreign matters in the external environment from affecting the smooth rotation of the steel ball, meanwhile, the bearing end face of the compensating core is the butt joint face of the flange plate, after the flange plate is stressed, the force is transferred to the pipe body through the compensating core, so that the sealing parts of the two flange plates in butt joint connection are kept stable, the sealing effect is good, and the vibration reduction effect is achieved.
As the preferable scheme of the invention, the compensating core is detachably connected with the pipe body through the screws, and a plurality of steel balls are arranged around the axis of the pipe body. The core is connected with the pipe body through the split structure, so that after the core is installed, the flange plate can be sleeved from the end face of the pipe body, and the flange plate is convenient to install.
As a preferable scheme of the invention, the first flange plate and/or the second flange plate is/are provided with mounting holes for mounting the steel balls, the mounting holes are communicated with the mounting grooves, and the mounting holes are internally provided with limiting pieces. The steel ball passes through the mounting hole and then is mounted in the mounting groove, the mounting hole is plugged by the limiting piece after the steel ball is assembled, and the steel ball is limited by the position of the mounting groove, so that the relative positions of the flange plate and the pipe body along the axial direction are fixed.
As a preferred embodiment of the present invention, the pipe body, the pipe joint main body, the first flange plate, and the second flange plate are each provided with at least one tool hole.
As a preferable scheme of the invention, sealing grooves are respectively arranged on the end face of the first flange plate and the end face of the second flange plate, and the sealing grooves are used for embedding and arranging sealing rings.
As a preferred embodiment of the invention, the hard pipe connection device further comprises at least one corner through pipe section and/or at least one straight pipe section. The angle pipe joint is used for realizing 90-degree steering of liquid in the hard pipe connecting device, so that the actual position between the hard pipe connecting device and a part to be connected is convenient to adapt, the straight pipe joint is used for realizing total length adjustment of the hard pipe connecting device, the pipe joint number of the hard pipe connecting device is reduced, the angle pipe joint or the straight pipe joint can be arranged between the non-concentric connecting pipe joint and the universal connecting pipe joint, and the non-concentric connecting pipe joint and the universal connecting pipe joint are communicated through the angle pipe joint or the straight pipe joint.
As a preferable scheme of the invention, the straight pipe joint comprises a straight pipe and third flanges arranged at two ends of the straight pipe, and the rotary sealing piece is arranged between the third flanges and the straight pipe. So that the straight pipe can be adapted to the position of the connecting hole with the part to be connected.
The manifold system comprises at least one fracturing tree and at least one shunt manifold sled, wherein each fracturing tree is communicated with each shunt manifold sled through at least one hard pipe connecting device, and adjacent shunt manifold sled is communicated through the hard pipe connecting device.
According to the manifold system, the hard pipe connecting device is used for connecting the split manifold sled with the wellhead fracturing tree and the adjacent split manifold sled, so that the fracturing tree and the split manifold sled and the two adjacent split manifold sled can be conveniently, quickly, stably and reliably connected through a small number of pipe joints, meanwhile, stable connection between the fracturing tree and the split manifold sled and between the split manifold sled is not influenced by placement position deviation, and the adaptability of the manifold system and the environment is further improved.
A manifold system comprising at least one fracturing device and at least one high and low pressure manifold sled, wherein the fracturing device and the high and low pressure manifold sled are communicated through at least one hard pipe connection device as described above.
According to the manifold system, the hard pipe connecting device is used for connecting the fracturing equipment and the high-low pressure manifold sled, so that the fracturing equipment and the high-low pressure manifold sled can be conveniently, quickly, stably and reliably connected through a small number of pipe joints, meanwhile, the stable connection between the fracturing equipment and the high-low pressure manifold sled is not influenced by the deviation of the placement positions, and the adaptability of the manifold system to the environment is improved.
A manifold system comprising a fracturing tree, a shunt manifold sled, fracturing equipment and a high-low pressure manifold sled, the fracturing tree being connected to the shunt manifold sled by a hard pipe connection device as described above; the adjacent manifold pickups are communicated through the hard pipe connecting device; the fracturing equipment is connected to the high-low pressure manifold sled through the hard pipe connecting device, and the shunt manifold sled and the high-low pressure manifold sled are communicated through the hard pipe connecting device.
The manifold system is formed by combining a plurality of fracturing trees, the shunt manifold sled, fracturing equipment and the high-low pressure manifold sled, can be directly applied to petroleum, natural gas and other underground resource exploitation, is convenient to connect and easy to adjust, and can be easily adapted to the complex topography environment of a fracturing site.
In summary, by adopting the technical scheme, the hard pipe connecting device has the beneficial effects that:
1. the universal connecting pipe joint is rotated along the parting and joining surface, so that the azimuth angle of the end face of the universal connecting pipe joint can be adjusted, one end of the non-concentric connecting pipe joint is rotated along the end face of the first flange, the azimuth angle of the end face of the first flange at the other end of the pipe body can be adjusted, and the azimuth adjustment of the connecting surfaces at the two ends of the hard pipe connecting device can be realized through the respective adjustment of the two pipe joints;
2. the two pipe joints are matched, so that the adjustable range of the connecting surfaces at the two ends of the hard pipe connecting device is wider, and the convenient and quick effective connection between the hard pipe connecting device and the parts to be connected can be realized easily;
3. the connecting structure between the pipe sections is simple, and the number and the connecting arrangement structure of the pipe sections can be easily adjusted to realize the adaptive adjustment of the distance and the direction between the pipe sections and the parts to be connected.
Drawings
Fig. 1 is a schematic structural view of the non-concentric connection pipe joint described in embodiment 1.
Fig. 2 is a schematic structural view of the universal joint pipe joint described in embodiment 1.
Fig. 3 is a schematic structural view of a hard pipe connection device of the combination of two non-concentric connection pipe joints in embodiment 1.
Fig. 4 is a schematic structural view of a hard tube connecting device of the two universal joint pipe joint combination in embodiment 1.
Fig. 5 is a schematic structural view of a hard tube connecting device of the universal joint and non-concentric joint combination of the embodiment 1.
FIG. 6 is a schematic cross-sectional view of the non-concentric connection pipe joint in FIG. 1 A-A in example 2.
Fig. 7 is a schematic cross-sectional structure of the universal joint pipe joint described in embodiment 3 in fig. 2B-B.
Fig. 8 is a schematic sectional view of a hard tube connecting device of two universal joint combinations of embodiment 3 in the sectional structure of C-C in fig. 4.
Fig. 9 is a partial enlarged view at D in fig. 8.
Fig. 10 is a schematic structural view of a hard tube connecting device of embodiment 4.
Fig. 11 is a view showing an application scenario of the hard pipe connecting device of the present invention.
Fig. 12 is a second application scenario of the hard pipe connecting device of the present invention.
Fig. 13 is a third application scenario of the hard pipe connecting device of the present invention.
Fig. 14 is a fourth application scenario of the hard pipe connecting device of the present invention.
Reference numerals:
1-non-concentric connection pipe joint, 11-pipe body, 12-first flange, 2-universal connection pipe joint, 21-pipe joint main body, 22-second flange, 3-rotary sealing piece, 31-core supplementing, 311-bending section, 32-steel ball, 4-mounting groove, 5-notch, 6-mounting hole, 7-limiting piece, 8-tool hole, 9-sealing groove, 10-sealing ring, 20-angle through pipe joint, 30-straight pipe joint, 301-straight pipe, 302-third flange, 40-hard pipe connecting device, 50-fracturing tree, 60-shunt manifold sledge, 70-fracturing equipment and 80-high-low pressure manifold sledge.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1-5, a hard pipe connecting device comprises at least one non-concentric connecting pipe joint 1, wherein the non-concentric connecting pipe joint 1 comprises a pipe body 11 and first flanges 12 arranged at two ends of the pipe body 11, the two first flanges 12 are parallel to each other, and the axes of the two first flanges 12 have a distance difference h, wherein h is more than 0.
In the hard pipe connecting device of this embodiment, as shown in fig. 1, the center of the end faces of the first flanges 12 at two ends of the non-concentric connecting pipe section 1 are not on a straight line, there is a height difference h between the opposite positions, and one non-concentric connecting pipe section 1 is equivalent to a vector with a size e that can be rotated arbitrarily.
Specifically, as shown in fig. 3, in this embodiment, two non-concentric connection pipe sections 1 are connected in a butt joint manner, the shapes and structures of the two non-concentric connection pipe sections 1 are the same, the first flanges 12 at the two ends of the non-concentric connection pipe sections 1 are parallel to each other, the butt joint surfaces of the two non-concentric connection pipe sections 1 are sealed by embedding the sealing rings 10 made of metal materials into the sealing grooves 9, the two non-concentric connection pipe sections 1 can rotate along the butt joint surfaces, the end surface positions of the first flanges 12 at the two ends are adjusted, and then the two non-concentric connection pipe sections 1 are stably connected by conventional fasteners such as bolts and nuts, so that the track coverage of a whole circle with a radius of 2e can be obtained by superposing the two non-concentric connection pipe sections 1, that is, namely, the effective sealing connection of two non-concentric connection pipe sections 2 with the same specification size can be superposed at least, the effective sealing connection of two surfaces with a space within a height of 4h range can be realized, and the adaptive range of the space height difference of the connecting surfaces to be expanded.
Specifically, according to the actual situation, the non-concentric connecting pipe joint 1 with the height difference of the center of the end faces at the opposite positions can be adopted for butt joint, so that the change of the adjusting range is realized, the space connectable range of the hard pipe connecting device is further increased, and the long transfer pipeline between the surfaces to be connected with the position differences of the end faces in the horizontal direction or the vertical direction is simplified.
Specifically, the number of the non-concentric connection pipe sections 1 can be adjusted according to actual conditions, so that not only can the end face of the hard pipe connection device be changed in the connectable range, but also the length of the hard pipe connection device can be changed, stable connection can be realized between the parts to be connected through a small number of pipe sections, the pipe diameter of the hard pipe connection device can be kept in a large flow state in a flange connection mode, and the wide range of adjustment of the hard pipe connection device can be realized under the condition that the flow of liquid is not influenced.
Preferably, the hard pipe connecting device of the present embodiment further includes at least one universal connecting pipe joint 2, where the universal connecting pipe joint 2 includes a pipe joint main body 21 and second flanges 22 disposed at two ends of the pipe joint main body 21, and a plane where end surfaces of the two second flanges 21 are located can form an included angle M, where M is less than 90 °.
Specifically, as shown in fig. 2, the end face of one of the second flanges 22 of the universal connection pipe joint 2 is perpendicular to the axis of the pipe joint main body 21, and the end face of the other second flange 22 is inclined at an angle smaller than 90 ° relative to the pipe joint main body 21, so that when the end face of one second flange 22 rotates, the orientation of the other second flange 22 in space changes, and the hard pipe connection device is suitable for smooth connection of the surfaces to be connected with poor orientation.
Specifically, as shown in fig. 4, in the hard pipe connecting device of this embodiment, two universal connecting pipe joints 2 are in butt joint connection, the two universal connecting pipe joints 2 are in butt joint connection through a second flange 22 which is obliquely arranged relative to a pipe joint main body 21, and a seal ring 10 made of metal is embedded between the butt joint surfaces of the two universal connecting pipe joints 2 through a seal groove 9, so that by relatively rotating the two universal connecting pipe joints 2, not only the orientation of two end surfaces in space can be changed, but also the two end surfaces can be rotated to a state that the two end surfaces are parallel to each other along the butt joint surfaces, so that the hard pipe connecting device is suitable for smooth connection of the surfaces to be connected with position deviation, and also suitable for smooth connection of the surfaces to be connected without position deviation.
Specifically, as shown in fig. 5, the hard pipe connecting device of the present embodiment connects the non-concentric connecting pipe joint 1 and the universal connecting pipe joint 2 in a butt joint manner, so that the hard pipe connecting device can be adapted to smooth connection of surfaces to be connected with different orientations and different radial distance differences in space.
Specifically, according to actual conditions, the number of the non-concentric connecting pipe joints 1 and the universal connecting pipe joints 2 and the arrangement structure of the butt joint combination can be adjusted, the axial line distance difference of the first flange plates 12 at the two ends of the non-concentric connecting pipe joints 1 is adjusted, the included angle value of the two end faces of the universal connecting pipe joints 2 is adjusted, the application range of the hard pipe connecting device is further enlarged, and the application scene of adaptation is more.
Specifically, the first flange 12 and the second flange 22 may be flanges with through holes, or flanges with blind holes, and the first flange 12 and the second flange 22 may be connected and fixed by bolts and nuts.
Example 2
As shown in fig. 6, a hard pipe connecting device of the present embodiment is the same as that of embodiment 1, except that: the rotary sealing piece 3 is arranged between the first flange plate 12 and the pipe body 11, the rotary sealing piece 3 comprises a compensating core 31 and a plurality of steel balls 32, the steel balls 32 are arranged on the rear side of the bearing end face of the compensating core 31, and the steel balls 32 are uniformly arranged around the pipe body 11.
Specifically, the core supplementing 31 is annular, the end of the pipe body 11 is sleeved, the notch 5 is formed in the outer wall of the pipe body 11, the bending section 311 of the core supplementing 31 extends into the notch 5, the core supplementing 31 and the pipe body 11 are connected through screws radially arranged along the pipe body 11, the bending section 311 of the core supplementing 31 is close to the steel balls 32, the steel balls 32 are uniformly distributed around the pipe body 11, the first flange 12 can smoothly rotate around the axis of the first flange 12, the position of a connecting hole on the first flange 12 is changed, and the first flange 12 can be smoothly connected with a surface to be connected.
Preferably, the pipe body 11 is provided with a mounting groove 4 adapted to the steel ball 32, the first flange 12 is provided with a mounting hole 6 for mounting the steel ball 32, the mounting hole 6 is communicated with the mounting groove 4, and a limiting part 7 is arranged in the mounting hole 6.
Specifically, the installation groove 4 is an annular groove formed around the pipe body 11 or a hemispherical groove matched with the shape of the steel ball 32, the installation groove 4 is formed by buckling two parts, and the two parts of the installation groove 4 formed by buckling can be selectively arranged as the annular groove or the hemispherical groove.
Specifically, the limiting piece 7 comprises a plug and a clamp spring which are embedded into the mounting hole 6.
Example 3
As shown in fig. 6 to 9, a hard pipe connecting device of the present embodiment has the same structure as that of embodiment 1, except that: the rotary sealing piece 3 is arranged between the second flange plate 22 and the pipe joint main body 21, the rotary sealing piece 3 comprises a compensating core 31 and a plurality of steel balls 32, the steel balls 32 are arranged at the rear side of the bearing end face of the compensating core 31, and the steel balls 32 are uniformly arranged around the pipe joint main body 21.
Preferably, the pipe joint main body 21 is provided with a mounting groove 4 adapted to the steel ball 32, the second flange 22 is provided with a mounting hole 6 for mounting the steel ball 32, the mounting hole 6 is communicated with the mounting groove 4, and a limiting part 7 is arranged in the mounting hole 6.
Specifically, the installation groove 4 is an annular groove formed around the pipe main body 21 or a hemispherical groove matched with the shape of the steel ball 32, the installation groove 4 is formed by buckling two parts, and the two parts buckled to form the installation groove 4 can be selectively formed into the annular groove or the hemispherical groove.
Specifically, the limiting piece 7 comprises a plug and a clamp spring which are embedded into the mounting hole 6.
Preferably, at least one tool hole 8 is respectively arranged on the first flange 12, the second flange 33, the pipe body 11 and the pipe fitting main body 21, the tool hole 8 can be matched with a connecting operation tool to extend the arm of force, so that the first flange 12 and the second flange 22 can be rapidly rotated, and the connecting holes on the first flange 12 and the second flange 22 can be aligned with the connecting holes on the surface to be connected.
Specifically, the second flange 22 is installed obliquely by a thickening step provided on the outer wall of the pipe joint main body 21.
Example 4
As shown in fig. 10, a hard pipe connecting device of the present embodiment has the same structure as that of embodiment 3, except that: the device further comprises at least one angular pipe joint 20 and at least one straight pipe joint 30, wherein the angular pipe joint 20 is preferably a flange-connected 90-degree angular pipe joint 20, the straight pipe joint 30 is preferably a flange-connected straight pipe joint 30, the connectable range of the hard pipe connecting device is further increased, and the adaptation of the distance, the height and the connection face orientation between the hard pipe connecting device and the parts to be connected is realized.
Specifically, the number of the universal connection pipe joints 2 and the non-concentric connection pipe joints 1, the arrangement structure along the trend of the hard pipe connection device, the setting positions and the setting number of the straight pipe joints 30 or the angle through pipe joints 20 can be adjusted according to actual conditions, so that the adjustable range of the hard pipe connection device can be further adjusted.
Preferably, the straight pipe section 30 includes a straight pipe 301 and third flanges 302 disposed at two ends of the straight pipe 301, and the rotary seal 3 is disposed between the third flanges 302 and the straight pipe 301.
Specifically, the hard pipe connecting device of the embodiment can be suitable for the scenes related to the transportation of complex fluid pipelines, such as fracturing fluid transportation, diversion, confluence, slurry transportation and the like in the petroleum drilling industry, and particularly can be suitable for the rapid and stable connection between two surfaces to be connected with space end face radial distance difference, axial distance difference and space orientation angle difference, and can reduce the vibration of a manifold system and improve the stability of the high-pressure transportation of complex fluid through the cooperation between pipe joints.
Example 5
As shown in fig. 11-12, a manifold system includes at least one fracturing tree 50 and at least one manifold sled 60, wherein each fracturing tree 50 is communicated with the manifold sled 60 through at least one hard pipe connection device 40 as described above, and adjacent manifold sled 60 are communicated through the hard pipe connection device 40.
According to the manifold system, the hard pipe connecting device 40 is used for connecting the shunt manifold prying 60 and the wellhead fracturing tree 50, so that the fracture tree 50 and the shunt manifold prying 60 and the adjacent shunt manifold prying 60 can be conveniently, quickly, stably and reliably connected through a small number of pipe joints, meanwhile, the stable connection between the fracture tree 50 and the shunt manifold prying 60 is not affected by the deviation of the placement positions, and the adaptability of the manifold system to the environment is further improved.
Example 6
13-14, a manifold system includes at least one fracturing device 70 and at least one high and low pressure manifold sled 80, where the fracturing device 70 and the high and low pressure manifold sled 80 are communicated by at least one hard pipe connection device 40 as described in the previous embodiment, and in this embodiment, the fracturing device 70 is a fracturing pump.
According to the manifold system, the hard pipe connecting device 40 is used for connecting the fracturing tree 50 with the shunt manifold sled 60 and connecting the adjacent shunt manifold sled 60, and the fracturing equipment 70 and the high-low pressure manifold sled 80 are connected through the hard pipe connecting device 40, so that the fracturing equipment 70 and the high-low pressure manifold sled 80 can be conveniently, quickly, stably and reliably connected through a small number of pipe joints, meanwhile, stable connection between the fracturing equipment 70 and the high-low pressure manifold sled 80 is not affected by placement position deviation, and the adaptability of the manifold system and the environment is improved.
Specifically, as shown in fig. 14, the manifold sled 60 and the high-low pressure manifold sled 80 are also connected through the hard pipe connection device 40.
Specifically, the hard pipe connecting device 40 of the present embodiment can be adapted to the scenario related to the transportation of complex fluid pipelines, such as the transportation of fracturing fluid, diversion, confluence, slurry transportation, etc. in the petroleum drilling industry, and particularly can be adapted to the rapid and stable connection between two surfaces to be connected with space azimuth deviation and space distance difference, and can reduce the vibration of the manifold system and improve the stability of the complex fluid high-pressure transportation through the cooperation between the connecting components of the hard pipe connecting device 40.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (13)
1. The hard pipe connecting device is characterized by comprising at least one non-concentric connecting pipe joint (1) in a fracturing fluid pipeline conveying scene in the petroleum drilling industry, wherein the non-concentric connecting pipe joint (1) comprises a pipe body (11) and first flanges (12) arranged at two ends of the pipe body (11), the pipe body (11) is a straight pipe, the two first flanges (12) are parallel to each other, the axes of the two first flanges (12) have a distance difference h, h & gt0, one non-concentric connecting pipe joint (1) is equivalent to a vector which can be rotated at will and has a size of e, and the non-concentric connecting pipe joint rotates along the end face of one end first flange, so that the position of the end face of the other end first flange in a plane can be changed, and the connection of a surface to be connected with a radial distance difference in space can be realized;
the novel pipe joint is characterized in that a rotary sealing piece (3) is arranged between the first flange plate (12) and the pipe body (11), the rotary sealing piece (3) comprises a compensating core (31) and a plurality of steel balls (32), the steel balls (32) are arranged on the rear side of the bearing end face of the compensating core (31), the pipe body (11) is provided with an installation groove (4) matched with the steel balls (32), the compensating core (31) comprises a bending section (311), the pipe body (11) is provided with a notch (5) matched with the bending section (311), the bending section (311) stretches into the notch (5), and the bending section of the compensating core is close to the steel balls.
2. A hard pipe connecting device according to claim 1, further comprising at least one universal connecting pipe joint (2), wherein the universal connecting pipe joint (2) comprises a pipe joint main body (21) and second flanges (22) arranged at two ends of the pipe joint main body (21), the pipe joint main body (21) is a straight pipe, the planes of the end faces of the two second flanges (22) can form an included angle M which is smaller than 90 °, and the non-concentric connecting pipe joint (1) and the universal connecting pipe joint (2) are in butt joint communication or pipeline communication.
3. A hard pipe connection according to claim 2, characterized in that the end face of one of the second flanges (22) of the universal joint pipe section (2) is perpendicular to the axis of the pipe section body (21).
4. A hard pipe connection according to claim 3, characterized in that a rotary seal (3) is provided between the second flange (22) and the pipe section body (21).
5. A hard pipe connection device according to claim 4, characterized in that the pipe section main body (21) is provided with a mounting groove (4) adapted to the steel ball (32), the pipe section main body (21) is provided with a notch (5) adapted to the bending section (311), and the bending section (311) extends into the notch (5).
6. A hard pipe connecting device according to claim 5, characterized in that the first flange plate (12) and/or the second flange plate (22) are/is provided with a mounting hole (6) for mounting the steel ball (32), the mounting hole (6) is communicated with the mounting groove (4), and a limiting piece (7) is arranged in the mounting hole (6).
7. A hard pipe connection according to claim 3, characterized in that the pipe body (11), the pipe section body (21), the first flange (12) and the second flange (22) are each provided with at least one tool hole (8).
8. A hard pipe connection according to claim 2, characterized in that sealing grooves (9) are provided on the end face of the first flange plate (12) and on the end face of the second flange plate (22), respectively, the sealing grooves (9) being used for embedding sealing rings (10).
9. A hard pipe connection according to claim 4, characterized in that the hard pipe connection (40) further comprises at least one corner through pipe section (20) and/or at least one straight pipe section (30).
10. A hard pipe connection according to claim 9, characterized in that the straight pipe section (30) comprises a straight pipe (301) and third flanges (302) provided at both ends of the straight pipe (301), the rotary seal (3) being provided between the third flanges (302) and the straight pipe (301).
11. A manifold system comprising at least one fracturing tree (50) and at least one manifold sled (60), each of said fracturing trees (50) being in communication with said manifold sled (60) via at least one hard pipe connection device (40) according to any one of claims 1-10, adjacent said manifold sled (60) being in communication via said hard pipe connection device (40).
12. A manifold system comprising at least one fracturing device (70) and at least one high and low pressure manifold skid (80), said fracturing device (70) and said high and low pressure manifold skid (80) being in communication via at least one hard pipe connection (40) according to any one of claims 1 to 10.
13. A manifold system comprising at least one manifold system according to claim 11 and at least one manifold system according to claim 12, wherein said high and low pressure manifold sled (80) is in communication with said shunt manifold sled (60) via at least one hard pipe connection device (40) according to any of claims 1-10.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111064542.1A CN113819321B (en) | 2021-09-10 | 2021-09-10 | Hard pipe connecting device and manifold system thereof |
| US17/929,094 US12234711B2 (en) | 2021-09-10 | 2022-09-01 | Hard pipe connecting device and manifold system thereof |
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| CN202111064542.1A CN113819321B (en) | 2021-09-10 | 2021-09-10 | Hard pipe connecting device and manifold system thereof |
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| CN113819321A CN113819321A (en) | 2021-12-21 |
| CN113819321B true CN113819321B (en) | 2023-08-15 |
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| CN202111064542.1A Active CN113819321B (en) | 2021-09-10 | 2021-09-10 | Hard pipe connecting device and manifold system thereof |
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| CN114952060B (en) * | 2022-06-15 | 2024-07-09 | 李天宏 | One-time lofting mouth repairing construction process for large-caliber pipeline butt joint double-sided welding |
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| CN113819321A (en) | 2021-12-21 |
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