CN114055770B - Hydraulic drive-based mechanical composite pipeline preparation method - Google Patents
Hydraulic drive-based mechanical composite pipeline preparation method Download PDFInfo
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- CN114055770B CN114055770B CN202111451300.8A CN202111451300A CN114055770B CN 114055770 B CN114055770 B CN 114055770B CN 202111451300 A CN202111451300 A CN 202111451300A CN 114055770 B CN114055770 B CN 114055770B
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- clamping device
- roller
- pipe
- driving vehicle
- inner liner
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- 239000002131 composite material Substances 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 25
- 229910000975 Carbon steel Inorganic materials 0.000 claims abstract description 9
- 239000010962 carbon steel Substances 0.000 claims abstract description 9
- 238000007493 shaping process Methods 0.000 claims abstract description 4
- 230000000712 assembly Effects 0.000 claims description 20
- 238000000429 assembly Methods 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 description 22
- 239000003921 oil Substances 0.000 description 18
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 239000008235 industrial water Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
- B29C63/341—Lining or sheathing of internal surfaces using tubular layers or sheathings pressed against the wall by mechanical means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Actuator (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
本发明公开了一种基于液压驱动的机械式复合管道制备方法，将扩管设备置于待扩张的内衬管内部，调整扩管设备中驱动车的调节机构，将沿周向均布的三个折展组件上的车轮均抵在内衬管上，并保证驱动车与内衬管同轴设置；然后，启动驱动车车轮上的电机，带动驱动车向前运动，驱动车驱动扩管设备的压紧装置同步前进；同时，启动液压装置向压紧装置内部供油，在油压驱动下，压紧装置压紧内衬管，并开始旋转运动，从而压紧装置在做直线前进运动与旋转运动组合的螺旋式运动过程中逐步完成对内衬管的扩张，使内衬管与碳钢管发生形变，直至碳钢管接触到管道定形外模具，完成复合管道制备。本发明能实现连续作业，且作业过程平稳，制备成本低，生产效率高。
The invention discloses a mechanical composite pipe preparation method based on hydraulic drive, wherein a pipe expansion device is placed inside an inner liner to be expanded, and an adjustment mechanism of a driving vehicle in the pipe expansion device is adjusted, so that the wheels on three folding and unfolding components uniformly distributed along the circumference are all against the inner liner, and the driving vehicle and the inner liner are ensured to be coaxially arranged; then, the motor on the driving vehicle wheel is started to drive the driving vehicle to move forward, and the driving vehicle drives the clamping device of the pipe expansion device to move forward synchronously; at the same time, the hydraulic device is started to supply oil to the inside of the clamping device, and under the oil pressure drive, the clamping device clamps the inner liner and starts to rotate, so that the clamping device gradually completes the expansion of the inner liner in the process of spiral motion combined with linear forward motion and rotational motion, so that the inner liner and the carbon steel pipe are deformed until the carbon steel pipe contacts the outer mold of the pipeline shaping, and the composite pipe preparation is completed. The invention can realize continuous operation, and the operation process is stable, the preparation cost is low, and the production efficiency is high.
Description
Technical Field
The invention belongs to the field of composite pipeline preparation, and particularly relates to a hydraulic drive-based mechanical composite pipeline preparation method.
Background
The composite pipeline has the advantages of light weight, good toughness, impact resistance, high compressive strength, smooth inner wall, small friction resistance and better rigidity and strength, and is widely applied to the fields of industrial oil gas transportation, industrial water circulation systems, wear-resistant and corrosion-resistant systems, cold and hot water transportation and the like, so that the processing and preparation of the composite pipeline have higher requirements at present.
At present, the preparation and processing of the composite pipeline generally comprise two modes of mechanical processing or metallurgical processing, wherein the mechanical processing mode is to expand and compress the lining pipe through a mechanical structure so as to realize the compositing of the lining pipe and the carbon steel pipe, the metallurgical processing mode is to metallurgically bond the lining material and the carbon steel pipe through a surfacing or hot rolling process so as to obtain the composite pipeline, the composite pipeline prepared through the metallurgical mode has stronger bonding force between the two materials compared with the composite pipeline obtained through the mechanical mode, however, the metallurgical processing cost is higher, the preparation process is complex, and when a large number of high-quality composite pipelines are needed, the metallurgical mode is difficult to be the optimal choice, so that the preparation and processing of the composite pipeline through the mechanical mode are the mode which is widely applied at present.
The prior art prepares the composite pipeline through a mechanical structure, and adopts the modes of fixing an outer die and expanding an inner die mostly, so that the structure of the inner die and a specific method for expanding the lining pipe are key points for preparing the composite pipeline, most of the inner dies are of an integrated structure at present, the mode of expanding the lining pipe is single, namely, the lining pipe is expanded through the structure of the integrated inner die, but the damage of the structure of the lining pipe caused by uneven stress or overlarge stress of the lining pipe in the expansion process can occur, and the quality of the composite pipeline is not up to standard, and the prior art is limited by the structure of the inner die, and the prior art is limited by a special processing method for preparing and processing the composite pipeline, so that the processing process is low in efficiency and high in cost.
Disclosure of Invention
Aiming at the problem that the pipeline structure is damaged easily due to uneven stress or overlarge stress of a lining pipe in the process of preparing the composite pipeline in the prior art, the invention provides a mechanical composite pipeline preparation method based on hydraulic driving so as to realize a stable and efficient composite pipeline preparation process.
The invention discloses a preparation method of a mechanical composite pipeline based on hydraulic driving, which comprises the following steps:
The method comprises the steps of arranging pipe expanding equipment in a lining pipe to be expanded, adjusting an adjusting mechanism of a driving vehicle in the pipe expanding equipment, enabling wheels on three folding and unfolding assemblies uniformly distributed along the circumferential direction to be abutted against the lining pipe and ensuring that the driving vehicle and the lining pipe are coaxially arranged, then starting a motor on the wheels of the driving vehicle to drive the driving vehicle to move forwards, driving a compressing device of the pipe expanding equipment to move forwards synchronously, simultaneously starting a hydraulic device to supply oil to the inside of the compressing device, compressing the lining pipe by the compressing device under the driving of oil pressure, starting rotating motion, and gradually completing the expansion of the lining pipe by the compressing device in the spiral motion process of combining linear advancing motion and rotating motion until the carbon steel pipe contacts a pipeline shaping outer die, thereby completing the preparation of a composite pipeline.
Preferably, the process of adjusting the radial position of the wheel by the driving vehicle through the adjusting mechanism is as follows:
The screw direction of two ends of the screw rod is opposite, the screw rod in the adjusting mechanism is rotated, so that a left-handed nut and a right-handed nut which respectively form a screw pair with the two ends of the screw rod move on the screw rod in opposite directions, three folding and unfolding components which are connected with the left-handed nut and the right-handed nut and uniformly distributed along the circumferential direction of the driving vehicle are unfolded synchronously, wheels of the three folding and unfolding components are propped against the lining pipe, the unfolding process of the folding and unfolding components is as follows, the distance between two support rods respectively fixed with the left-handed nut and the right-handed nut is reduced, and the two support rods drive the wheel frames to extend outwards through the two side links to push the wheels to prop against the lining pipe.
More preferably, in the folding and unfolding assembly, two supporting rods are respectively fixed on a left-handed nut and a right-handed nut and are respectively fixed with two rod sleeves, two short pins fixed at one ends of two side link rods are respectively supported on a corresponding rod sleeve through a first bearing, the other ends of the two side link rods and a wheel frame form a composite hinge through a long pin, two optical axes are respectively supported on the wheel frame through a second bearing and are respectively driven by two motors, and two wheels are fixed on the two optical axes.
Preferably, the adjusting mechanism comprises a threaded rod, a left-handed nut, a right-handed nut, a handle shaft and a handle, wherein the handle shaft is fixed on the threaded rod, and the handle is fixed on the handle shaft.
The driving vehicle comprises a driving vehicle shell, wherein three rectangular grooves are formed in the driving vehicle shell uniformly distributed along the circumferential direction, and three folding and unfolding assemblies respectively penetrate through the corresponding rectangular grooves.
Preferably, the hydraulic device supplies oil to the inside of the pressing device and drives the pressing device to move, and the process is specifically as follows:
Starting a hydraulic device, sending oil into the shell of the compacting device, and enabling two roller assemblies to extend outwards relative to the shell of the compacting device under the driving of oil pressure and to prop against the lining pipe; simultaneously, the oil drives the compressing device shell and the two roller assemblies to synchronously rotate through the spiral groove in the compressing device shell.
The pressing device comprises two roller assemblies, a pressing device end cover, a central shaft and a liquid sealing ring, wherein the central shaft and a pressing device shell form a revolute pair, the two pressing device end covers are fixed at two ends of the central shaft, a space between the pressing device end cover, the central shaft and the pressing device shell is a hydraulic cavity, the liquid sealing ring is arranged between the pressing device end cover and the pressing device shell, the two roller assemblies are arranged on the pressing device shell, the included angle between the two roller assemblies along the circumferential direction of the central shaft is 180 degrees, the roller assemblies comprise a roller, a roller bracket, a telescopic rod, a roller bearing and a roller shaft, the roller is fixed on the roller shaft, the roller shaft is supported on the roller bracket through the two roller bearings, an axial retainer ring is arranged between the roller bearing and the roller bracket, the telescopic rod and the roller bracket are fixed, the telescopic rod and the roller bracket form the revolute pair with a slideway arranged on the pressing device shell, the inner end of the slideway of the pressing device shell is communicated with the hydraulic cavity, the inner end of the telescopic rod is provided with a spherical surface groove, and the two ends of the side surfaces are both sides of the roller are conical surfaces.
Preferably, a plurality of rectangular grooves are formed in the inner half hole walls of the two supporting holes for supporting the two ends of the roller shaft on the roller bracket, and the two ends of springs arranged in the rectangular grooves are respectively contacted with the bottoms of the rectangular grooves and the outer ring of the roller bearing.
Preferably, the motor and the hydraulic device are both electrically connected with and controlled by the controller.
Preferably, an interface connected with an oil supply pipe and an oil return pipe of the hydraulic device is arranged on the end cover of the pressing device, and the hydraulic device is supplied with oil by a pump.
The invention has the beneficial effects that:
According to the invention, the compacting device is driven by hydraulic pressure to realize the rotary motion of the compacting device, the compacting device is arranged on the driving vehicle to realize the axial motion of the compacting device, so that the compacting device can move in a spiral manner, and the expansion and compaction of the lining pipe are realized through the roller assemblies in the compacting device, and finally, the two roller assemblies gradually squeeze the inner wall of the lining pipe along two spiral line tracks in a small area, so that the preparation of a composite pipeline is completed, and the problems of uneven pipeline stress or damage to the structure of the lining pipe caused by synchronous extrusion of large area of the lining pipe in the conventional operation method are avoided. Further, the spherical groove at the inner end of the telescopic rod is more beneficial to hydraulic stable driving, so that more stable pressing force is applied to the inner wall of the lining pipe. The two ends of the side face of the roller are conical surfaces, so that the lining pipe can be gradually compressed, the inner diameter of the composite pipeline is gradually enlarged, and the stress uniformity in the extrusion process of the composite pipeline is further improved. Therefore, the invention can realize continuous operation, has stable operation process, low preparation cost and high production efficiency.
Drawings
FIG. 1 is a schematic diagram of an assembly of a pipe expander apparatus of the present invention;
FIG. 2 is a schematic view of an assembly of an adjustment mechanism according to the present invention;
FIG. 3 is a schematic view of the front structure of the drive vehicle of the present invention;
FIG. 4 is a schematic view of the rear structure of the drive vehicle of the present invention;
FIG. 5 is a schematic view of an assembly of a compression device according to the present invention;
FIG. 6 is a schematic view of an assembly of the roller assembly of the present invention;
FIG. 7 is a perspective view of the roller assembly of the present invention;
fig. 8 is a schematic diagram of the operation of the compression device of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
A preparation method of a mechanical composite pipeline based on hydraulic driving comprises the following steps:
As shown in figures 1 and 8, the pipe expanding equipment is arranged in a lining pipe 9 to be expanded, the regulating mechanism of a driving vehicle in the pipe expanding equipment is regulated, wheels on three folding and unfolding assemblies uniformly distributed along the circumferential direction are propped against the lining pipe 9 and are ensured to be coaxially arranged with the lining pipe, then a motor 17 on the wheels of the driving vehicle is started to drive the driving vehicle to move forwards, a compressing device of the pipe expanding equipment is driven by the driving vehicle to synchronously move forwards, meanwhile, a hydraulic device is started to supply oil to the inside of the compressing device, the compressing device compresses the lining pipe 9 and starts to rotate, so that the compressing device gradually completes expansion of the lining pipe 9 and a carbon steel pipe 8 in the spiral movement process of combination of linear movement and rotation movement until the carbon steel pipe 8 contacts a pipeline shaping outer die 7, and the preparation of a composite pipeline is completed.
As a preferred embodiment, the driving vehicle adjusts the radial position of the wheel through the adjusting mechanism specifically as follows:
As shown in fig. 2, the threaded rods 20 in the adjusting mechanism are rotated to enable the left-handed nuts 10 and the right-handed nuts 24 which respectively form a screw pair with the two ends of the threaded rods 20 to move on the threaded rods 20 in opposite directions, so that three folding and unfolding components which are connected with the left-handed nuts 10 and the right-handed nuts 24 and uniformly distributed along the circumferential direction of the driving vehicle are unfolded synchronously, wheels 18 of the three folding and unfolding components are abutted against the lining tube 9, the unfolding process of the folding and unfolding components is as follows, the distance between two supporting rods 11 which are respectively fixed with the left-handed nuts 10 and the right-handed nuts 24 is reduced, the two supporting rods 11 drive the wheel frames 15 to extend outwards through the two connecting rods 14 to push the wheels 18 to abut against the lining tube 9, and due to the characteristic of thread self-locking, the wheels of the three folding and unfolding components are abutted against the lining tube 9 and cannot be pressed back, so that the stable running of the driving vehicle is ensured.
As shown in fig. 3 and 4, the driving vehicle comprises a driving vehicle shell 3, a driving vehicle front end cover 26 and a driving vehicle rear end cover 25, wherein the driving vehicle comprises an adjusting mechanism and a folding and unfolding assembly, the driving vehicle front end cover 26 and the driving vehicle rear end cover 25 are fixed at two ends of the driving vehicle shell 3 through bolts 27, two ends of a threaded rod 20 and round holes formed in the driving vehicle front end cover 26 and the driving vehicle rear end cover 25 respectively form a revolute pair, and one of the pressing device end covers 2 of the pressing device is fixed with the driving vehicle front end cover 26.
As a preferred embodiment, as shown in fig. 2, in the folding and unfolding assembly, two supporting rods 11 are respectively fixed on a left-handed nut 10 and a right-handed nut 24 and are respectively fixed with two rod sleeves 12, two short pins 13 fixed at one ends of two side link rods 14 are respectively supported on a corresponding rod sleeve 12 through a first bearing 21, the other ends of the two side link rods 14 and a wheel frame 15 form a composite hinge through a long pin 19, two optical axes are respectively supported on the wheel frame 15 through a second bearing 16 and are respectively driven by two motors 17, and two wheels 18 are fixed on the two optical axes.
As a preferred embodiment, as shown in FIG. 2, the adjustment mechanism includes, in addition to a threaded rod 20, a left-hand nut 10 and a right-hand nut 24, a handle shaft 22 and a handle 23, the handle shaft 22 being fixed to the threaded rod 20 and the handle 23 being fixed to the handle shaft 22.
As a more preferable embodiment, three rectangular grooves uniformly distributed along the circumferential direction are formed in the driving vehicle housing 3, and three folding and unfolding components respectively pass through the corresponding rectangular grooves.
As a preferred embodiment, the hydraulic device supplies oil to the inside of the pressing device and drives the pressing device to move specifically as follows:
The hydraulic device is started to send oil into the shell 1 of the compacting device, as shown in fig. 8, the two roller assemblies 6 are extended outwards relative to the shell 1 of the compacting device under the driving of oil pressure and are propped against the lining pipe 9, and meanwhile, the oil drives the shell 1 of the compacting device and the two roller assemblies 6 to synchronously rotate through the spiral groove in the shell 1 of the compacting device.
As a preferred embodiment, as shown in fig. 5,6 and 7, the hold-down device comprises, in addition to two roller assemblies 6, a hold-down device end cap 2, a central shaft 4 and a liquid seal ring 5; the central shaft 4 and the shell 1 of the pressing device form a revolute pair; the two pressing device end covers 2 are fixed at two ends of the central shaft 4; the space between the end cover 2 of the compressing device, the central shaft 4 and the shell 1 of the compressing device is a hydraulic cavity, a liquid sealing ring 5 is arranged between the end cover 2 of the compressing device and the shell 1 of the compressing device to ensure the tightness of the hydraulic cavity, two roller components 6 are arranged on the shell 1 of the compressing device, the circumferential included angle between the two roller components 6 along the central shaft 4 is 180 degrees, each roller component 6 comprises a roller 6-1, a roller bracket 6-3, a telescopic rod 6-4, a roller bearing 6-5 and a roller shaft 6-6, the roller 6-1 is fixed on the roller shaft 6-6, the roller shaft 6-6 is supported on the roller bracket 6-3 through the two roller bearings 6-5, an axial retainer ring 6-2 is arranged between the roller bearing 6-5 and the roller bracket 6-3 to axially position the roller bearing 6-5, the telescopic rod 6-4 and the roller bracket 6-3 are fixed and form a revolute pair with a slideway arranged on the shell 1 of the compressing device, the inner end of the slideway of the shell 1 of the compressing device is communicated with the hydraulic cavity, a spherical groove is formed in the inner end of the telescopic rod 6-4, the inner end of the telescopic rod is more favorable for stable driving, the inner diameter of the pipe is gradually expanded, the inner diameter of the pipe is more stable, the inner wall is applied to the inner wall of the pipe is a composite inner lining 9, the inner lining is gradually expanded, the inner diameter of the pipe is gradually, the inner lining is stable, and the inner lining is applied to the inner lining of the pipe is gradually, and has the inner compression effect 9 function of the inner lining is gradually has the function of the side compression effect is gradually, thereby further improving the stress uniformity in the extrusion process of the composite pipeline.
As a more preferable embodiment, a plurality of rectangular grooves are formed in the inner half hole walls of two supporting holes for supporting the two ends of the roller shaft 6-6 on the roller bracket 6-3, the two ends of a spring arranged in the rectangular grooves are respectively contacted with the bottom of the rectangular grooves and the outer ring of the roller bearing 6-5, and the spring can set pretightening force on the roller shaft 6-6, so that the extrusion force of the roller assembly 6 on the composite pipeline is more stable.
As a more preferred embodiment, both the motor 17 and the hydraulic means are electrically connected to and controlled by a controller.
As a more preferred embodiment, the end cap 2 of the pressing device is provided with a port connected with an oil supply pipe and an oil return pipe of the hydraulic device, and the hydraulic device is supplied with oil by a pump.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451300.8A CN114055770B (en) | 2021-12-01 | 2021-12-01 | Hydraulic drive-based mechanical composite pipeline preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111451300.8A CN114055770B (en) | 2021-12-01 | 2021-12-01 | Hydraulic drive-based mechanical composite pipeline preparation method |
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| Publication Number | Publication Date |
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| CN114055770A CN114055770A (en) | 2022-02-18 |
| CN114055770B true CN114055770B (en) | 2024-11-29 |
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| CN202111451300.8A Active CN114055770B (en) | 2021-12-01 | 2021-12-01 | Hydraulic drive-based mechanical composite pipeline preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| IT202200010013A1 (en) * | 2022-05-16 | 2023-11-16 | Vammi S R L | AN EXPANDER OF A TUBULAR ASSEMBLY |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869947A (en) * | 2018-08-23 | 2018-11-23 | 国家电网有限公司 | A kind of cable preheating embedding line expansion robot |
| CN112097008A (en) * | 2020-09-16 | 2020-12-18 | 西南石油大学 | A lining composite pipe trimming robot |
| CN216540550U (en) * | 2021-12-01 | 2022-05-17 | 杭州电子科技大学 | Hydraulic drive's compound pipeline preparation facilities of mechanical type |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105889698A (en) * | 2016-06-22 | 2016-08-24 | 深圳市樊溪电子有限公司 | Attaching and embedding device for repairing pipe |
| CN107504319A (en) * | 2017-07-20 | 2017-12-22 | 西安理工大学 | A kind of spiral driving pipe robot |
| CN109253342A (en) * | 2018-11-13 | 2019-01-22 | 安徽理工大学 | A kind of pipe walking robot |
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2021
- 2021-12-01 CN CN202111451300.8A patent/CN114055770B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108869947A (en) * | 2018-08-23 | 2018-11-23 | 国家电网有限公司 | A kind of cable preheating embedding line expansion robot |
| CN112097008A (en) * | 2020-09-16 | 2020-12-18 | 西南石油大学 | A lining composite pipe trimming robot |
| CN216540550U (en) * | 2021-12-01 | 2022-05-17 | 杭州电子科技大学 | Hydraulic drive's compound pipeline preparation facilities of mechanical type |
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