CN108856986B - Small-bore pipeline back argon filling protection system - Google Patents
Small-bore pipeline back argon filling protection system Download PDFInfo
- Publication number
- CN108856986B CN108856986B CN201810738036.8A CN201810738036A CN108856986B CN 108856986 B CN108856986 B CN 108856986B CN 201810738036 A CN201810738036 A CN 201810738036A CN 108856986 B CN108856986 B CN 108856986B
- Authority
- CN
- China
- Prior art keywords
- cable
- straightening
- rod
- wheel
- assembly
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 title claims abstract description 208
- 229910052786 argon Inorganic materials 0.000 title claims abstract description 104
- 230000007246 mechanism Effects 0.000 claims abstract description 52
- 238000005452 bending Methods 0.000 claims abstract description 7
- 230000006835 compression Effects 0.000 claims description 29
- 238000007906 compression Methods 0.000 claims description 29
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 238000013016 damping Methods 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 230000002093 peripheral effect Effects 0.000 claims description 23
- 230000005540 biological transmission Effects 0.000 claims description 22
- 239000003638 chemical reducing agent Substances 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000003466 welding Methods 0.000 abstract description 22
- 238000009434 installation Methods 0.000 abstract description 14
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000000149 penetrating effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 17
- 238000004804 winding Methods 0.000 description 16
- 229910001220 stainless steel Inorganic materials 0.000 description 13
- 239000010935 stainless steel Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 12
- 230000000903 blocking effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 238000007689 inspection Methods 0.000 description 5
- 210000001503 joint Anatomy 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000011324 bead Substances 0.000 description 3
- 210000003734 kidney Anatomy 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000009193 crawling Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/167—Arc welding or cutting making use of shielding gas and of a non-consumable electrode
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/32—Accessories
- B23K9/325—Devices for supplying or evacuating shielding gas
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention belongs to the technical field of pipeline welding, and particularly relates to a small-caliber pipeline back argon filling protection system. The system comprises an argon filling protection device, a support, a flexible cable rod, a pushing straightening mechanism and a cable rod coiling mechanism, wherein one end of the flexible cable rod is wound on a reel in the cable rod coiling mechanism, the other end of the flexible cable rod penetrates through a space between a first straightening wheel and a second straightening wheel of a first straightening unit, a groove on a third straightening wheel bypassing a reverse bending unit, and a space between the first straightening wheel and the second straightening wheel penetrating through a second straightening unit, and the other end of the flexible cable rod is connected with the argon filling protection device. The invention has the advantages of high mechanical automation degree, simple and quick operation, improves the installation efficiency of the argon filling protection device, lightens the labor intensity of workers, and easily adjusts the position of the argon filling protection device, improves the installation accuracy of the argon filling protection device, further improves the welding quality and avoids the waste of argon.
Description
Technical Field
The invention belongs to the technical field of pipeline welding, and particularly relates to a small-caliber pipeline back argon filling protection system.
Background
When stainless steel or carbon steel-stainless steel composite pipeline circumferential seam butt TIG welding (Tungsten Inert Gas Welding, called non-consumable electrode inert gas tungsten electrode protection welding), local blocking is carried out in a welded junction position pipe, and argon is filled for protection, so that the method is a main, effective and economic method for avoiding oxidation of the inside of the stainless steel or carbon steel-stainless steel composite pipeline and ensuring welding quality.
For the girth butt joint TIG welding of large and medium aperture pipelines (with the inner diameter of more than 150 mm), a local plugging device with an electric crawling function can be adopted, so that local plugging is realized from the pipe end to a welded junction and argon filling protection is carried out. For the circular seam butt joint TIG welding of a large-length small-caliber pipeline, because the space in the pipeline is narrow, in site construction, a steel pipe with a hole is mainly adopted, and round rubber blocking plates are arranged at two end parts of the steel pipe with the hole, so that a simple local blocking argon filling protection device is formed. The using method of the device comprises the following steps: manually lengthening the rigid long rod, and pushing the simple device with the long chain to a welded junction for sealing; or before the welded junction is assembled, the device is placed in the welded pipe, an elastic steel wire penetrates through the next welded pipe section (the length is 6-12 m) with an argon pipe to be connected with the plugging device, after the welded junction is assembled, the elastic steel wire is pulled to enable two plugging plates of the device to be located at the welded junction, plugging is achieved, and after welding is completed, a long chain or the elastic steel wire is pulled to pull out the device.
In carrying out the invention, the applicant has found that at least the following deficiencies in the prior art exist:
in the prior art, when the plugging device is used for argon filling protection of a small-caliber pipeline, the installation position is difficult to adjust because the plugging device is manually operated on the long rod or the steel wire in the installation process, and the conditions of inaccurate installation, inaccurate sealing and the like are easily generated, so that the bad argon filling protection of a welded junction is caused, the welding quality is influenced, and the problems of argon waste and the like are caused.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a small-caliber pipeline back argon filling protection system, which is provided with a function of mechanically and automatically adjusting the position of an argon filling protection device in a pipeline.
The technical scheme of the invention is as follows:
the utility model provides a small-bore pipeline back argon filling protection system, the system includes argon filling protection device, support, flexible cable pole, push straightening mechanism and cable pole coiling mechanism, wherein,
the cable rod coiling mechanism comprises a bottom plate, a mandrel and a reel: the bottom plate is fixedly arranged on the bracket, the mandrel is vertically arranged on the bottom plate, and the reel is rotatably sleeved on the mandrel;
the pushing straightening mechanism comprises a plate frame, a straightening assembly, a transmission assembly and a cable rod driving assembly, wherein the plate frame is fixedly arranged on the support, the straightening assembly comprises a first straightening unit, a recurved unit and a second straightening unit which are sequentially far away from the cable rod coiling mechanism, the recurved unit is arranged on the middle vertical line of the first straightening unit and the second straightening unit, the first straightening unit and the second straightening unit respectively comprise a first straightening wheel and a second straightening wheel, the first straightening wheel and the second straightening wheel are relatively rotatably arranged on the plate frame, grooves are formed on the peripheral surface of the first straightening wheel and the peripheral surface of the second straightening wheel, a space for the flexible cable rod to pass through is formed by the grooves on the first straightening wheel and the grooves on the second straightening wheel, the recurved unit comprises a third straightening wheel which is rotatably arranged on the plate frame, and the peripheral surface of the third straightening wheel is provided with a flexible cable rod matched with the grooves; the cable rod driving assembly is arranged on the plate frame, and the output end of the cable rod driving assembly is respectively connected with the first straightening wheels in the first straightening unit and the second straightening unit through the transmission assembly;
One end of the flexible cable rod is wound on a reel in the cable rod coiling mechanism, the other end of the flexible cable rod penetrates through a space between a first straightening wheel and a second straightening wheel of the first straightening unit, bypasses a groove on a third straightening wheel of the reverse bending unit and penetrates through a space between the first straightening wheel and the second straightening wheel of the second straightening unit, and the other end of the flexible cable rod is connected with the argon filling protection device.
Further, the cable rod driving assembly comprises a cable rod servo motor, and the cable rod servo motor is arranged at the bottom of the plate frame.
Further, the transmission assembly comprises a driving wheel and two driven wheels, wherein,
the driving wheel is connected with an output shaft of the cable rod servo motor;
the two driven wheels are oppositely arranged at two sides of the driving wheel, and are respectively connected with the driving wheel through belts;
one of the two driven wheels shares a rotation axis with the first straightening wheel of the first straightening unit, and the other of the two driven wheels shares a rotation axis with the second straightening wheel of the second straightening unit.
Still further, the cable bar driving assembly further comprises an electromagnetic clutch, the electromagnetic clutch is arranged on the output shaft of the cable bar servo motor, and the driving wheel is operatively connected with the output shaft of the cable bar servo motor through the electromagnetic clutch.
Further, the cable coiling mechanism also comprises a reel driving assembly, wherein the reel driving assembly comprises a reel servo motor, a transmission gear and an annular rack, and the transmission gear is arranged on the reel servo motor,
the reel servo motor is arranged at the bottom of the bottom plate;
the transmission gear is fixedly arranged on an output shaft of the reel servo motor;
the annular rack is arranged at the bottom of the reel, and the annular rack is meshed with the transmission gear.
Further, the cable rod coiling mechanism also comprises a straightening cable arranging component which is arranged between the reel and the pushing straightening mechanism and comprises a cable arranging speed reducer, a cable arranging frame, a cable arranging servo motor, a cable arranging rod and a fourth straightening wheel,
the cable arranging speed reducer is arranged on the bracket;
the cable arranging servo motor is arranged on the cable arranging speed reducer, and the output end of the cable arranging servo motor is connected with the input end of the cable arranging speed reducer;
The cable arranging rack is arranged on the cable arranging speed reducer;
the cable arranging rod is rotatably arranged on the cable arranging frame, and the cable arranging rod is connected with the output end of the cable arranging speed reducer;
the fourth straightening wheel is sleeved on the cable arranging rod, and the peripheral surface of the fourth straightening wheel is provided with a groove matched with the flexible cable rod.
Still further, the spool has two opposing discs with the flexible cable wound between the two discs;
the straightening cable arranging assembly further comprises two first elastic damping blocks, one ends of the two first elastic damping blocks are fixedly arranged on the cable arranging frame, the other ends of the two first elastic damping blocks are provided with arc-shaped surfaces matched with the discs, and the other ends of the two first elastic damping blocks are correspondingly attached to the peripheral surfaces of the two discs respectively.
Further, the cable rod coiling mechanism also comprises a cable rod compressing assembly, the cable rod compressing assembly and the straightening cable arranging assembly are oppositely arranged with the central shaft of the reel, the cable rod compressing assembly comprises a compressing frame, a compressing arm, a stretching spring and a compressing wheel,
the compression frame is fixedly arranged on the bracket;
The two pressing arms are arranged oppositely, and one ends of the two pressing arms are rotatably connected to the pressing frame;
one end of the extension spring is connected to the compression frame, and the other end of the extension spring is connected to any one compression arm;
the compression wheel is rotatably connected between the other ends of the two compression arms, and the compression wheel and the flexible cable rod are in rolling friction.
Still further, the spool has two opposing discs with the flexible cable wound between the two discs;
the cable rod compacting assembly further comprises two second elastic damping blocks, one ends of the two second elastic damping blocks are fixedly arranged on the compacting frame, the other ends of the two second elastic damping blocks are provided with arc-shaped surfaces matched with the discs, and the other ends of the two second elastic damping blocks are correspondingly attached to the peripheral surfaces of the two discs respectively.
Preferably, the system further comprises more than one cable bar support member, the cable bar support members are arranged on the flexible cable bar at intervals, the cable bar support members comprise a top plate, an elastic annular steel clip and rollers, wherein,
The two elastic annular steel clamps are arranged, one ends of the two elastic annular steel clamps are fixedly arranged on the top plate, the two elastic annular steel clamps enclose a through hole for the flexible cable rod to pass through, and the other ends of the two elastic annular steel clamps are bent towards the outside of the through hole;
the rollers are arranged in one-to-one correspondence with the elastic annular steel cards, and are rotatably arranged at the other ends of the corresponding elastic annular steel cards.
The beneficial effects of the invention at least comprise:
according to the small-caliber pipeline back argon filling protection system, the reel is rotatably sleeved on the mandrel, one end of the flexible cable rod is wound on the reel in the cable rod coiling mechanism, and the other end of the flexible cable rod is connected with the argon filling protection device, so that the flexible cable rod is controlled to be coiled on the reel, and the argon filling protection device can move in the small-caliber pipeline.
Because the output end of the cable rod driving component in the pushing straightening mechanism is connected with the first straightening wheels in the first straightening unit and the second straightening unit respectively through the transmission component, namely, the cable rod driving component can drive the first straightening wheels in the first straightening unit and the second straightening unit to rotate so as to drive the movement of the flexible cable rod, the winding of the flexible cable rod on the reel is realized, and the movement of the argon filling protection device in the small-caliber pipeline is realized.
Because the flexible cable rod has a certain bending degree when being wound on the reel, the invention is provided with the straightening assembly, and because the reverse bending unit in the straightening assembly is arranged on the middle vertical line of the first straightening unit and the second straightening unit, after the flexible cable rod sequentially passes through the straightening assembly, an arc which is opposite to the bending degree is formed, thereby straightening the flexible cable rod and improving the smoothness of conveying the argon filling protection device through the flexible cable rod.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a structure of a weld argon filling protection device for a small-bore pipeline according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a weld argon filling protection device for a small-bore pipeline according to an embodiment of the present invention;
FIG. 3 is a schematic view of the structure of an annular airbag according to an embodiment of the present invention;
FIG. 4 is a schematic view of a compressed air tube assembly according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a roller assembly according to an embodiment of the present invention;
FIG. 6 is a schematic view of an argon pipe frame according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a camera apparatus according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a small-caliber pipeline back argon filling protection system in an embodiment of the invention;
FIG. 9 is a schematic view of a cable winding mechanism according to an embodiment of the present invention;
FIG. 10 is a schematic view of a cable spool in accordance with an embodiment of the present invention;
FIG. 11 is a schematic view of a straightening cable assembly according to an embodiment of the present invention;
FIG. 12 is a schematic view of a cable tie assembly according to an embodiment of the present invention;
FIG. 13 is a schematic diagram of a push straightening mechanism according to an embodiment of the present invention;
FIG. 14 is a schematic view of a flexible cable bar according to an embodiment of the invention;
FIG. 15 is a schematic view of a cable support member according to an embodiment of the present invention;
fig. 16 is a schematic working diagram of a small-bore pipeline back argon-filling protection system in an embodiment of the invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a back argon filling protection system for a small-caliber pipeline, which is mainly designed for realizing the position adjustment of an argon filling protection device in the pipeline and corresponding auxiliary functions.
Fig. 1 is a schematic structural diagram of a device for partially blocking argon filling at a welded junction of a pipeline according to an embodiment of the present invention, referring to fig. 1, the device includes a central tube 1, a first annular air bag 2, a second annular air bag 9, a first roller assembly, and a second roller assembly.
Referring to fig. 1, a first roller assembly and a first annular air bag 2 according to an embodiment of the present invention are a group, and are sequentially disposed on one axial end of the peripheral surface of a central tube 1 from outside to inside along the axial direction of the central tube 1; the second roller assembly and the second annular air bag 9 are another group, and are sequentially arranged on the other axial end of the peripheral surface of the central tube 1 from outside to inside along the axial direction of the central tube 1.
The first annular air bag 2 and the second annular air bag 9 can be inflated and deflated, and the central tube 1 can move in the pipeline along the axial direction of the pipeline through the first roller assembly and the second roller assembly.
According to the local plugging argon filling device for the welded junction of the pipeline, as the two annular air bags and the two roller assemblies are arranged on the peripheral surface of the central pipe, the annular air bags can be inflated and deflated, the central pipe can move in the pipeline along the axial direction of the pipeline through the roller assemblies, when the device needs to move to the welded junction in the pipeline, the annular air bags are deflated, the central pipe is operated, and the central pipe can move in the inner wall of the pipeline through the roller assemblies, so that the pollution phenomenon caused by other parts in the device to the interior of the pipeline can be avoided, and the device can be conveniently moved and adjusted due to the fact that the roller assemblies move in the pipeline, the device has the characteristic of small friction force; after the device moves in place, the annular air bag is inflated, so that the annular air bag is tightly attached to the inner wall of the pipeline, and the device is fixed so as to perform subsequent works such as partial blocking of a welded junction of the pipeline and argon protection.
Fig. 2 is a schematic structural diagram of a device for partially blocking welded junction of pipeline according to an embodiment of the present invention, and referring to fig. 1 and 2, the device according to an embodiment of the present invention may further include four annular bosses 6, each two annular bosses 6 are formed as a group, the two groups of annular bosses 6 are respectively disposed at two axial ends of the peripheral surface of the central tube 1, the two annular bosses 6 in each group form an air bag placement area, and the first annular air bag 2 and the second annular air bag 9 are respectively fixedly disposed in the two air bag placement areas.
In the embodiment of the present invention, a plurality of air bag mounting blind holes 61 are formed in each annular boss 6 at equal angle intervals around the central axis of the annular boss 6, and two blind holes 62 for collar are also formed in the annular boss 6 located on the outer side.
In the embodiment of the present invention, the first annular air bag 2 and the second annular air bag 9 may be flat annular air bags made of elastic heat-resistant and wear-resistant rubber, fig. 3 is a schematic structural diagram of an annular air bag in the embodiment of the present invention, and referring to fig. 3, in the embodiment of the present invention, more than one elastic fixing strip 7 may be disposed on two sides of the first annular air bag 2 and the second annular air bag 9 along the axial direction of the central tube 1, and one air bag nozzle 11 is disposed on one side of the first annular air bag 2 and the second annular air bag 9 along the axial direction of the central tube 1 and opposite to each other.
In the embodiment of the invention, referring to fig. 1, the elastic fixing strip 7 is fixedly mounted on the annular boss 6 through the cooperation of the bolt and the air bag mounting blind hole 61, the air bag nozzle 11 is sleeved with a clamping ring, and two ends of the clamping ring are fixedly mounted on the annular boss 6 through the cooperation of the bolt and the two clamping rings through the blind holes 62.
In the embodiment of the invention, the plurality of elastic fixing strips 7 can be arranged at equal angle intervals around the central axis of the annular air bag, so that the air bag of a patient is uniformly stressed, and the sealing effect is improved. The clamping ring can limit the position of the air bag nozzle, so that the air bag nozzle cannot generate loss on the inner wall of the pipeline when the annular air bag is inflated.
With reference to fig. 1, an embodiment of the invention further comprises a compressed air assembly 5. Fig. 4 is a schematic structural view of a compressed air tube assembly according to an embodiment of the present invention, and in combination with fig. 4, the compressed air assembly 5 may include an air inlet tube 51 and two air bag connection tubes 52 disposed corresponding to air bag nozzles,
referring to fig. 1 and 4, in the embodiment of the present invention, one end of the air inlet pipe 51 is disposed outside one axial end of the central pipe 1, the other end of the air inlet pipe 51 extends into the central pipe, and one ends of the two air bag connecting pipes 52 are both communicated with the other end of the air inlet pipe 51.
Further, referring to fig. 4, the compressed air assembly 5 according to the embodiment of the present invention may further include a tee 53, the tee 53 having one inlet and two outlets, the inlet of the tee 53 being connected to the other end of the air inlet pipe 51, the two outlets of the tee 53 being respectively connected to one ends of the two air bag connection pipes 52, so as to enable one ends of the two air bag connection pipes 52 to be communicated with the other end of the air inlet pipe 51.
In the embodiment of the present invention, the air bag connecting pipe 52 and the air inlet pipe 51 in the compressed air assembly 5 may be made of soft materials.
Referring to fig. 1 and 4, in the embodiment of the present invention, two first kidney grooves 101 corresponding to the air bag connecting pipes 52 are provided on the peripheral side wall of the central tube 1, the length direction of the first kidney grooves 101 is parallel to the axial direction of the central tube 1, the other ends of the air bag connecting pipes 52 pass through the corresponding first kidney grooves 101, and the other ends of the air bag connecting pipes 52 are communicated with the corresponding air bag nozzles 11.
After the compressed air assembly 5 of the embodiment of the invention is assembled, the inflation and deflation work of the annular air bag can be realized.
Referring to fig. 2, in the embodiment of the present invention, on the peripheral surface for mounting the first roller assembly and the first roller assembly, the central tube 1 is provided with more than one second kidney-shaped groove 102 at equal angles along the axial direction of the central tube 1, and the length direction of the second kidney-shaped groove 102 is parallel to the axial direction of the central tube 1.
In connection with fig. 2, in an embodiment of the present invention, a first kidney-shaped groove 101 may be disposed between two adjacent second kidney-shaped grooves 102.
Fig. 5 is a schematic structural diagram of a roller assembly according to an embodiment of the present invention, and in combination with fig. 5, the first roller assembly and the first roller assembly according to an embodiment of the present invention each include a roller 31, an arc-shaped fixing block 32, and a connecting screw 33.
Referring to fig. 1, fig. 2 and fig. 5, the rollers 31, the connecting screws 33 and the second kidney-shaped grooves 102 in the embodiment of the invention are arranged in a one-to-one correspondence, the rollers 31 are rotatably sleeved on the corresponding connecting screws 33, and the rollers 31 are arranged in the corresponding second kidney-shaped grooves 102 in a rolling manner.
Referring to fig. 1 and 5, a plurality of arc-shaped fixing blocks 32 may be provided, the arc-shaped fixing blocks 32 are fixedly installed in corresponding second kidney-shaped grooves 102, the plurality of arc-shaped fixing blocks 32 are arranged on the peripheral surface of the central tube 1 at equal angle intervals around the central axis of the central tube 1, two adjacent arc-shaped fixing blocks 32 are connected through a connecting screw 33, the plurality of arc-shaped fixing blocks 32 enclose a ring shape coaxial with the central tube 1, and the inner diameter of the ring shape is consistent with the outer diameter of the central tube 1.
In the embodiment of the present invention, a fixing block connection threaded hole 106 is provided on the side wall of each second kidney-shaped groove 102, and in the embodiment of the present invention, referring to fig. 5, a fixing block connection through 36 matched with the fixing block connection threaded hole 106 may be provided on the circumferential surface of the arc-shaped fixing block 32, and the arc-shaped fixing block 32 is fixedly installed in the corresponding second kidney-shaped groove by using a bolt.
Specifically, in connection with fig. 5, in the embodiment of the present invention, two surfaces of two adjacent arc-shaped fixing blocks facing each other may be respectively provided with a through hole 34 for connection and a through hole 35 for connection, one end of a nut of a connection screw 33 is disposed in the through hole 35 for connection, and the head of the connection screw 33 enters into the through hole 34 for connection, that is, connection of the two adjacent arc-shaped fixing blocks is achieved.
When the device is required to move in the pipeline, the roller can roll on the inner wall of the pipeline, and the movement resistance of the device can be reduced due to rolling friction force, so that the device can be conveniently and quickly moved and adjusted.
Referring to fig. 1, the apparatus according to the embodiment of the present invention may further include an argon pipe rack 4, fig. 6 is a schematic structural diagram of the argon pipe rack according to the embodiment of the present invention, and referring to fig. 6, the argon pipe rack 4 according to the embodiment of the present invention includes an argon inlet pipe 41 and an argon outlet pipe 42.
Referring to fig. 6, an air inlet nozzle 43 is disposed at one end of an argon inlet pipe 41, the other end of the argon inlet pipe 41 is closed, two argon outlet pipes 42 are disposed on the peripheral surface of the argon inlet pipe 41 at vertical intervals, and the two argon outlet pipes 42 are both communicated with the argon inlet pipe 41.
Referring to fig. 1, 2 and 6, in the embodiment of the present invention, one end of the argon gas inlet tube 41 is located outside one axial end of the central tube 1, the other end of the argon gas inlet tube 41 penetrates into the central tube 1, two through holes 103 for argon gas tubes respectively corresponding to the argon gas outlet tube 42 are provided on the peripheral side wall of the central tube 1, and the argon gas outlet tube 42 passes through the corresponding through holes 103 for argon gas tubes in a sealing manner.
Further, with reference to fig. 2, two through holes for argon gas pipe are provided between the two first annular air bags 2 and the second annular air bag 9, so that the sealed space formed by the two annular air bags, the center tube 1 and the pipe can be filled with argon gas for argon gas protection at the time of welding.
In the embodiment of the present invention, the argon inlet pipe 41 and the argon outlet pipe 42 may be made of hard materials.
Referring to fig. 2, in the embodiment of the present invention, one or more vent valve mounting holes 104 are further provided on the peripheral surface of the central tube 1, and the vent valve mounting holes 104 are located between two annular air bags. Referring to fig. 1, a ventilation valve 105 is installed in the ventilation valve installation hole 104, and when the argon pressure in the sealed space exceeds a predetermined value, the argon is discharged through the ventilation valve 105 by pressure relief.
Referring to fig. 1, in the embodiment of the present invention, a camera 8 may be disposed at one axial end of a central tube, fig. 7 is a schematic structural diagram of the camera in the embodiment of the present invention, referring to fig. 1 and 7, the type of the camera 8 may be JASYB02-46, the camera 81 at the head may rotate by 360 ° in the axial direction, the level may rotate by more than 180 °, the industrial camera with 480 lines of high resolution color image sensor, high brightness LED illumination source and auto focusing function has a transparent hard cylindrical shield, and the tail portion thereof has 1 high temperature resistant multi-core camera input/output control cable 82, the camera input/output control cable 82 passes through the central tube 1, and the camera cable connector 83 is mounted at the tail end thereof for controlling the camera and receiving video images captured by the camera.
Of course, the model of the camera 8 may be other models capable of achieving the above functions, which is not limited by the embodiment of the present invention.
In summary, the invention can realize the stable and low-resistance and pollution-free rapid movement of the welded junction local blocking argon filling device with the camera in the pipeline (particularly the pipeline with the inner diameter not smaller than 60 mm), thereby creating conditions for ensuring the realization of the mechanized installation of the welded junction local blocking argon filling device; the local plugging is tight, the positioning is stable, the argon loss is reduced, and the argon filling protection effect of the welded junction is improved; through 360-degree rotation shooting of the camera arranged at the front end, clear images of the surface of the welding seam of the whole inner weld can be obtained, and the requirement of visual observation and inspection is met.
Aiming at the argon filling protection device for the welded junction of the small-caliber pipeline, the embodiment of the invention designs a back argon filling protection system for the small-caliber pipeline, and fig. 8 is a schematic structural diagram of the back argon filling protection system for the small-caliber pipeline in the embodiment of the invention, and referring to fig. 8, the system comprises the argon filling protection device, a bracket 12, a flexible cable rod 13, a pushing straightening mechanism 14 and a cable rod coiling mechanism 15.
Referring to fig. 8, the support 12 in the embodiment of the present invention has a height adjusting function to be consistent with the height of the pipe, and may be implemented as follows: an adjusting oil cylinder is arranged at the corner of the bottom of the bracket 12, and the telescopic length of the adjusting oil cylinder is controlled to achieve the purpose of adjusting the height of the bracket 12.
Fig. 9 and 10 are schematic structural diagrams of a cable coiling mechanism according to an embodiment of the present invention, and in combination with fig. 9 and 10, the cable coiling mechanism according to an embodiment of the present invention includes a base plate 151, a mandrel 152, a reel 153, a reel driving assembly, a straightening cable-arranging assembly, and a cable-pressing assembly.
Referring to fig. 8, 9 and 10, in the embodiment of the present invention, the bottom plate 1501 is fixedly disposed on the support and is in a horizontal state, the mandrel 1502 is vertically disposed on the bottom plate 1501, the reel 1503 is rotatably sleeved on the mandrel 1502, and one end of the flexible cable 13 is wound around the reel 1503, and the reel 1503 rotates around the mandrel 1502 to drive the flexible cable 13 to be wound.
The reel 1503 of the embodiment of the present invention has two opposite discs, the middle parts of which are integrally connected by a connecting shaft, and the flexible cable 13 is wound on the connecting shaft between the two discs.
Referring to fig. 10, in an embodiment of the present invention, a reel driving assembly may include a reel servo motor 1504, a transmission gear 1505 and an annular rack 1506, where the reel servo motor 1504 is installed at the bottom of the bottom plate 1501 to reasonably arrange space, the transmission gear 1505 is fixedly disposed on an output shaft of the reel servo motor 1501, the annular rack 1506 is disposed at the bottom of the reel 1503, the annular rack 1506 is meshed with the transmission gear 1505, the reel servo motor 1504 is started, and the output shaft drives the transmission gear 1505 to rotate, so as to drive the transmission rack 1506 meshed with the transmission gear 1505 to rotate, that is, the purpose that the reel 1503 rotates around the mandrel 1502 is achieved, so that the flexible cable 13 can be wound.
In an embodiment of the present invention, a ring of annular teeth may be engraved on the bottom of the reel 1503 to form an annular rack 1506. Of course, an annular rack 1506 may be welded directly to the bottom of spool 1503.
Fig. 11 is a schematic structural view of a straightening cable assembly according to an embodiment of the present invention, and referring to fig. 8 to 11, the straightening cable assembly is disposed between a reel 1503 and a push straightening mechanism 14, and the straightening cable assembly includes a cable reducer 1507, a cable frame 1508, a cable servo motor 1509, a cable rod 1510, and a fourth straightening wheel 1511.
Referring to fig. 8-11, in the embodiment of the present invention, a cable discharge speed reducer 1507 is fixedly disposed on a support 12, a cable discharge servo motor 1509 is disposed on the cable discharge speed reducer 1507, and an output end of the cable discharge servo motor 1509 is connected with an input end of the cable discharge speed reducer 1507, so that power of the cable discharge servo motor 1509 can be output after being limited in speed by the cable discharge speed reducer 1507.
Referring to fig. 11, the cable rack 1508 of the embodiment of the present invention is disposed on the cable reducer 1507, and the cable lever 1510 is rotatably mounted on the cable rack 1508, and the cable lever 1510 is connected to the output end of the cable reducer 1507, so that the cable lever 1510 can be driven to rotate synchronously with the output shaft of the cable reducer 1507.
Referring to fig. 8-11, in the embodiment of the present invention, the fourth straightening wheel 1511 is sleeved on the cable rod 1510, the fourth straightening wheel 1511 can rotate synchronously with the cable rod 1510, a groove capable of matching with the flexible cable rod 13 is formed on the circumferential surface of the fourth straightening wheel 1511, and in the process of winding the flexible cable rod 13, friction force can be generated between the flexible cable rod 13 and the fourth straightening wheel 1511, so as to reduce the winding speed of the flexible cable rod 13 and improve the winding stability of the flexible cable rod 13.
Referring to fig. 8-11, the straightening cable arranging assembly according to the embodiment of the invention further includes two first elastic damping blocks 1512, one ends of the two first elastic damping blocks 1512 are fixedly arranged on the cable arranging frame 1508, the other ends of the two first elastic damping blocks 1512 are respectively provided with an arc surface matched with the circular discs, the other ends of the two first elastic damping blocks 1512 are respectively correspondingly attached to the peripheral surfaces of the two circular discs, and when the winding disc 1503 rotates, friction can be generated between the two circular discs and the two first elastic damping blocks 1512 to limit the rotating speed of the winding disc 1503 and improve the winding stability of the flexible cable rod 13.
Further, referring to fig. 11, the cable rack 1508 in the embodiment of the present invention may include an upper plate and a lower plate which are oppositely disposed, the lower plate is fixedly disposed on the cable speed reducer 1507, the same ends of the upper plate and the lower plate are integrally connected by a fixing rod, and the cable bar 1510 is rotatably disposed between the other ends of the upper plate and the lower plate, so that the fourth straightening wheel 1511 and the fixing rod may form a space through which only the flexible cable bar 13 passes to guide the flexible cable bar 13; and two first elastic damping blocks 1512 may be fixedly mounted on the other ends of the upper and lower base plates, respectively.
Fig. 12 is a schematic structural diagram of a cable rod compressing assembly according to an embodiment of the present invention, and in combination with fig. 8, 9, 10 and 12, the cable rod compressing assembly and the straightening cable assembly according to an embodiment of the present invention may be disposed opposite to each other with respect to a central axis of a reel 1503, and the cable rod compressing assembly includes a compressing frame 1513, a compressing arm 1514, a tension spring 1515 and a compressing wheel 1516.
Referring to fig. 8, 9, 10 and 12, the compression frame 1513 according to the embodiment of the present invention is fixedly disposed on the support 12, and two compression arms 1514 are disposed opposite to each other, one end of each of the two compression arms 1514 is rotatably connected to the compression frame 1513, one end of the tension spring 1515 is connected to the compression frame 1513, and the other end of the tension spring 1515 is connected to any one of the compression arms 1514; and the pinch roller 1516 is rotatably connected between the other ends of the two pinch arms 1514, the pinch roller 1516 and the flexible cable 13 rollingly rubs. In the winding process of the flexible cable 13, the flexible cable 13 can be supported by the compression wheel 1516, friction is generated between the flexible cable 13 and the compression wheel, so that the winding speed of the flexible cable 13 can be reduced, the winding stability of the flexible cable 13 is improved, the winding direction of the flexible cable 13 can be limited, and the winding of the flexible cable 13 is guided.
Referring to fig. 8, 9, 10 and 12, the cable rod compression assembly according to the embodiment of the present invention may further include two second elastic damping blocks 1517, one ends of the two second elastic damping blocks 1517 are fixedly disposed on the compression frame 1513, the other ends of the two second elastic damping blocks 1517 each have an arc surface matched with a disc, the other ends of the two second elastic damping blocks 1517 are respectively correspondingly attached to the circumferential surfaces of the two discs, and when the reel 1503 rotates, the two discs may rub against the two first elastic damping blocks 1512 to limit the rotation speed of the reel 1503, thereby improving the stability of winding the flexible cable rod 13.
Referring to fig. 12, in the embodiment of the present invention, the compression frame 1513 may also include an upper top plate and a lower bottom plate that are oppositely disposed, the lower bottom plate is fixedly disposed on the support 12, and the same ends of the upper top plate and the lower bottom plate are integrally connected through a fixing rod, and a compression arm shaft is rotatably sleeved on the fixing rod, and one ends of two compression arms 1514 are fixedly connected to the compression arm shaft, so as to realize rotatable connection between the compression arms and the compression frame; and the other ends of the upper top plate and the lower bottom plate can be connected into a whole through another fixing rod, and one end of the tension spring 1515 is arranged on the other fixing rod. Two second elastic damping blocks 1517 of the embodiment of the present invention may be fixedly installed on the other ends of the upper and lower plates, respectively.
In connection with fig. 12, in an embodiment of the present invention, the other end of the tension spring 1515 may be secured to a connecting rod which may be fixedly disposed on a compression arm 1514 located below.
Referring to fig. 9, the top of the mandrel 152 of the present embodiment may be coupled to the stator of a hybrid gas-electric rotary joint 1518, and the cable connector and air connector of the rotor portion of the hybrid gas-electric rotary joint 1518 may be coupled to the cable connector and air connector of the tail end of the flexible cable 13 secured to the reel 1503.
Fig. 13 is a schematic structural view of a push straightening mechanism according to an embodiment of the present invention, and referring to fig. 13, push straightening mechanism 14 according to an embodiment of the present invention includes a plate rack 141, a straightening assembly 142, a transmission assembly 143, and a cable lever driving assembly 144.
Referring to fig. 8 and 13, a plate rack 141 according to an embodiment of the present invention is fixedly provided on a bracket 12 in a horizontal state.
Referring to fig. 8 and 13, a straightening assembly 142 according to an embodiment of the present invention includes a first straightening unit, a recurved unit and a second straightening unit which are sequentially far from a cable coiling mechanism 15, the recurved unit is disposed on a middle vertical line of the first straightening unit and the second straightening unit, the first straightening unit and the second straightening unit include a first straightening wheel 1421 and a second straightening wheel 1422, the first straightening wheel 1421 and the second straightening wheel 1422 are rotatably mounted on a plate frame 141, grooves are formed on a circumferential surface of the first straightening wheel 1421 and a circumferential surface of the second straightening wheel 1422, the grooves on the first straightening wheel 1421 and the grooves on the second straightening wheel form a space for a flexible cable 13 to pass through, the recurved unit includes a third straightening wheel plate frame 1423, the third straightening wheel 1423 is rotatably mounted on the plate frame 141, and a groove matched with the flexible cable 13 is formed on a circumferential surface of the third straightening wheel 1423; the cable bar driving assembly 144 is mounted on the board frame 1141, and an output end of the cable bar driving assembly 144 is connected to a first straightening wheel 1421 of the first straightening unit and the second straightening unit through a transmission assembly 143, respectively.
Referring to fig. 8, in the embodiment of the present invention, one end of flexible cable 13 is wound around reel 1503 in cable winding mechanism 15, the other end of flexible cable 13 passes through the space between first straightening wheel 1421 and second straightening wheel 1422 of the first straightening unit, the groove on third straightening wheel 1423 bypassing the reverse bending unit, passes through the space between first straightening wheel 1421 and second straightening wheel 1422 of the second straightening unit, and the other end of flexible cable 13 is connected with the argon filling protection device.
Referring to fig. 8 and 13, in an embodiment of the present invention, cable lever driving assembly 144 includes cable lever servomotor 1441, and cable lever servomotor 1441 is disposed at the bottom of plate rack 141.
Referring to fig. 8 and 13, in the embodiment of the present invention, the transmission assembly 143 includes a driving wheel 1431 and two driven wheels 1432, where the driving wheel 1431 is connected to an output shaft of the cable rod servomotor 1441, and the cable rod servomotor 1441 is started to drive the driving wheel 1431 to rotate.
Referring to fig. 8 and 13, two driven wheels 1432 of the embodiment of the present invention are oppositely disposed at two sides of a driving wheel 1431, and the two driven wheels 1432 are respectively connected with the driving wheel 1431 through a belt, so that the two driven wheels 1432 can be driven to rotate under the condition that the driving wheel 1431 rotates.
Referring to fig. 8 and 13, in the embodiment of the present invention, one of the two driven wheels 1432 and the first straightening wheel 1421 of the first straightening unit share one rotation axis, and the other of the two driven wheels 1432 and the second straightening wheel 1433 of the second straightening unit share one rotation axis, and under the condition that the two driven wheels rotate, the first straightening wheel 1421 of the first straightening unit and the second straightening wheel 1433 of the second straightening unit can be driven to rotate, so that the flexible cable 13 can be conveyed.
In the embodiment of the invention, the flexible cable 13 can be conveyed to the direction of the pipeline only through the pushing straightening mechanism 14, and the pushing straightening mechanism 14 and the reel driving assembly 15 can also cooperate together; in the embodiment of the invention, based on the fact that the winding is not smooth due to the asynchronous driving when the flexible cable 13 is recovered from the pipeline and wound only through the reel driving assembly 15, and in combination with fig. 8 and 13, the cable driving assembly 144 can further comprise an electromagnetic clutch 1442, the electromagnetic clutch 1442 is arranged on the output shaft of the cable servo motor 144, the driving wheel 1431 is operatively connected with the output shaft of the cable servo motor 1441 through the electromagnetic clutch 1442, when the flexible cable 13 is conveyed to the direction of the pipeline, the electromagnetic clutch 1442 can be electrified to transmit the output of the cable servo motor 144 to the driving wheel 1431, and when the flexible cable 13 is recovered and wound from the pipeline, the electromagnetic clutch 1442 can be powered off to enable the output of the cable servo motor 144 to be unable to be transmitted to the driving wheel 1431, so that the flexible cable 13 is recovered from the pipeline and wound only through the reel driving assembly 15.
Fig. 14 is a schematic structural view of a flexible cable rod according to an embodiment of the present invention, and referring to fig. 14, in an embodiment of the present invention, flexible cable rod 13 includes a cable tube 1301, a cable tube joint 1302, an air tube cable tube bundle 1303, and a tube bundle clamping block 1304.
Referring to fig. 8 and 14, a cable tube 1301 of the embodiment of the present invention includes a spring tube and a wear-resistant sheath wrapped around the spring tube, where the spring tube has a middle stiffness, and the wear-resistant sheath has elasticity, so that the cable tube can be rolled up, thereby reducing the occupied space and reducing the wear of the spring tube.
Referring to fig. 8 and 14, two cable tube joints 1302 are provided in the embodiment of the present invention, and the two cable tube joints 1302 are respectively fixedly installed at two axial ends of the cable tube 1301, and an air tube cable tube bundle 1303 is inserted into the cable tube joint 1302.
Referring to fig. 8 and 14, in the embodiment of the present invention, two tube bundle clamping blocks 1304 are also provided, and the two tube bundle clamping blocks 1304 are respectively and fixedly installed at the inner ends of the two cable tube joints 1302, so as to be used for clamping the tracheal cable bundles 1303.
Referring to fig. 8 and 14, the system according to the embodiment of the present invention may further include one or more cable bar supporting members 16, fig. 15 is a schematic structural diagram of the cable bar supporting members according to the embodiment of the present invention, and referring to fig. 15, the cable bar supporting members 16 are disposed on the flexible cable bar 13 at intervals, the cable bar supporting members 16 may include a top plate 1601, elastic ring-shaped steel cards 1602 and rollers 1603, wherein two elastic ring-shaped steel cards 1602 are disposed on the top plate 1601, one ends of the two elastic ring-shaped steel cards 1602 are fixedly disposed on the top plate 1601, the two elastic ring-shaped steel cards 1602 define a through hole through which the flexible cable bar 13 passes, the other ends of the two elastic ring-shaped steel cards 1602 are bent outside the through hole, the rollers 1603 are disposed in one-to-one correspondence with the elastic ring-shaped steel cards 1602, and the rollers 1603 are rotatably disposed on the other ends of the corresponding elastic ring-shaped steel cards 1602.
In the embodiment of the present invention, the cable bar support members 16 are clamped on the cable tube 1301 at regular intervals when the flexible cable bar 13 starts to be pushed into the pipeline, and the cable bar support members 16 are pulled out of the pipe orifice and then removed from the cable tube 13011 when the flexible cable bar 13 is pulled out of the pipeline.
The cable support 16 of the embodiment of the present invention functions as: the flexible cable 13 can be ensured to enter the pipeline in a collimated state, in addition, due to the roller 1603, when the flexible cable runs in the pipeline, the roller 1603 and the inner wall of the pipeline are in rolling friction relationship, so that friction force can be reduced, the flexible cable can run in the pipeline more smoothly, and in operation, due to the contact of the roller 1603 and the inner wall of the pipeline, abrasion pollution to the pipeline can be reduced, and the cleanliness of the inner wall of the pipeline can be improved.
Because the annular air bag in the argon filling protection device of the embodiment of the invention needs to be inflated and deflated, the embodiment of the invention is also provided with the air whipping mechanism 20 on the bracket 12 in combination with fig. 8, and the air whipping mechanism 20 can be a single-interface air pumping/inflating source formed by a miniature whipping pump and an electromagnetic reversing valve so as to improve the inflation and deflation operation for the annular air bag.
Because the annular air bag in the argon filling protection device of the embodiment of the invention needs to be filled with argon, in combination with fig. 8, an argon source 19 is further arranged on the bracket 12.
Referring to fig. 8, in the embodiment of the present invention, the tail end of the argon filling protection device may be connected to the flexible cable 13 through the cable rod connection frame 17, and the air tube and the cable of the air tube cable tube bundle 1303 in the flexible cable 13 are respectively connected to the argon gas interface, the air interface and the camera cable interface of the tail end of the argon filling protection device 1, and the connector thereof is horizontally fixed in the cable rod connection frame 2; after sequentially passing through the cable rod pushing and straightening mechanism 14 and the straightening cable arranging component, the flexible cable rod 13 is coiled on the reel 1503, and the tail end of the flexible cable rod 13 is fixed in a cable rod fixing tube of the reel 1503.
Referring to fig. 8, in the embodiment of the present invention, an electrical control box 17 and a display control terminal 18 may also be disposed on the support 12, where the cable rod driving servo motor, the electromagnetic clutch, the reel servo motor, and the cable discharge servo motor are respectively connected with the electrical control box 17 through cables, and the electrical control box 17 coordinates and controls the actions of the electrical components, so that the cable rod pushing and straightening mechanism 14 and the cable rod coiling mechanism 15 coordinate and operate, and stable pushing and pulling out of the flexible cable rod 13 are realized; the air whipping mechanism 20 and the argon gas source 19 are respectively connected with the electric control box 9 through cables or air pipes so as to realize on-off and pressure control of the gas source; the display control terminal 10 is connected with the electric control box 9 through 1 cable, and a camera control cable at the output end of the electric control box 9 and output air pipes of the air whipping mechanism 20 and the argon air source 19 are connected to a cable joint and an air pipe joint of a stator part of the gas-electric hybrid rotary joint 1518.
Fig. 16 is a working schematic diagram of a small-caliber pipeline back argon filling protection system in an embodiment of the invention, and the installation process and working principle of the protection system are briefly described with reference to fig. 16:
the argon filling protection device is installed and positioned at one end of a pipeline assembly welding bracket 21 of the prefabricated production equipment, and 2 small-caliber stainless steel pipes 22 are installed and positioned on the pipeline assembly welding bracket 21 of the prefabricated production equipment;
before continuous production is started, the height of the bracket 12 is adjusted according to the pipe diameter of the pipeline, so that the axis of the horizontally pushed flexible cable rod 13 is basically coaxial with the small-caliber stainless steel pipe 22;
according to the pipe length of the single small-caliber stainless steel pipe 22, the parameters such as the pushing and rewinding length, speed and the like of the flexible cable 13 are set by using the display control terminal 18;
after 2 small-caliber stainless steel pipes 22 are assembled and positioned on a pipeline assembly welding support 20, a display control terminal 18 is used for setting the system into a manual pushing mode, a pushing start key is clicked, an electric control box 17 controls a cable rod pushing straightening mechanism 14 and a cable rod coiling mechanism 15 to synchronously and coordinately work according to a manual pushing program, so that a flexible cable rod 13 is pushed forward, an argon filling protection device is pushed into a port of the small-caliber stainless steel pipe 22, an operator holds the argon filling protection device, the argon filling protection device is stably fed into the small-caliber stainless steel pipe 22 until a cable pipe joint at the front end of the flexible cable rod 13 completely enters the pipeline, and a pushing stop key on the display control terminal 18 is pressed, so that the flexible cable rod 13 stops pushing;
Setting the protection system to an automatic pushing mode by using a display control terminal 18, clicking a pushing start key, and controlling a cable rod pushing straightening mechanism 14 and a cable rod coiling mechanism 15 by an electric control box 17 to synchronously and coordinately work according to an automatic pushing program, so that a flexible cable rod 13 is continuously pushed forwards, and an argon filling protection device moves towards a welded junction direction between 2 small-caliber stainless steel pipes 22;
in the pushing process of the flexible cable rod 13, 1 cable rod supporting piece is clamped on the flexible cable rod 13 at the outer position of the front end of the bracket of the plugging device of the bracket 12 every 1 meter, so that the flexible cable rod 13 enters the small-caliber stainless steel tube 22 together with the flexible cable rod 13;
when abnormal conditions occur in the automatic pushing process, a pushing stop key on the display control terminal 18 can be pressed at any time, and after the pushing stop key is regulated to be normal, the automatic pushing program is continued;
when the length of the flexible cable rod 13 which is pushed into the steel pipe is actually calculated to reach the set pushing length of the flexible cable rod, the cable rod pushing straightening mechanism 14 and the cable rod coiling mechanism 15 stop working, the flexible cable rod 13 stops pushing, a welded junction between the stainless steel pipes 22 is basically positioned in the middle of the argon filling protection device, and the argon filling protection device is pushed into place;
the display control terminal 10 is used for starting a plugging argon filling working mode, the electric control box 17 controls the air whipping mechanism 20 to start working, air is filled into the annular air bag to enable the annular air bag to be positioned and plug a pipe section near a welded junction, then an argon source 19 is started, argon is filled into the plugged pipe section, and when the oxygen content in the plugged pipe section is detected to be reduced to meet the welding requirement, the air whipping mechanism 20 and the argon source 19 keep working state, and the welded junction welding is started;
After the welding of the welded junction is completed, the reverse work is performed to complete the recovery of the argon filling protection device, and the recovery principle is similar to that described above, so that the embodiment of the invention is not limited.
Practical application shows that the small-caliber pipeline back argon filling protection system realizes the mechanized installation of the local plugging argon filling device in the welded junction pipe of the large-length small-caliber pipeline, can reduce the installation time by more than 50 percent, and improves the installation efficiency; the installation operation is standardized, the randomness and the instability of manual installation are reduced, the installation quality of the partial plugging argon filling device is improved, and the pollution of the installation operation to the inner wall of the pipeline is basically avoided; the constructor only needs to carry out simple auxiliary installation and control operation, thus greatly reducing the labor intensity of the constructor; the inner weld bead visual inspection function is integrated, inner weld bead forming, defect and overburning condition observation and inspection can be carried out, 2 processes of pipeline welding and inner weld bead inspection are combined and continuously completed, the time required by corresponding welding inspection is reduced by more than 80%, and the comprehensive construction efficiency of pipeline welding inspection is improved.
The above examples are provided for convenience of description of the present invention and are not to be construed as limiting the invention in any way, and any person skilled in the art will realize that the present invention is not limited to the details of the present invention, but is intended to cover all modifications, variations, modifications, and equivalent arrangements of the present invention without departing from the scope of the technical features of the present invention.
Claims (8)
1. A small-caliber pipeline back argon filling protection system is characterized by comprising an argon filling protection device, a bracket, a flexible cable rod, a pushing straightening mechanism and a cable rod coiling mechanism, wherein,
the cable rod coiling mechanism comprises a bottom plate, a mandrel and a reel: the bottom plate is fixedly arranged on the bracket, the mandrel is vertically arranged on the bottom plate, and the reel is rotatably sleeved on the mandrel;
the pushing straightening mechanism comprises a plate frame, a straightening assembly, a transmission assembly and a cable rod driving assembly, wherein the plate frame is fixedly arranged on the support, the straightening assembly comprises a first straightening unit, a recurved unit and a second straightening unit which are sequentially far away from the cable rod coiling mechanism, the recurved unit is arranged on the middle vertical line of the first straightening unit and the second straightening unit, the first straightening unit and the second straightening unit respectively comprise a first straightening wheel and a second straightening wheel, the first straightening wheel and the second straightening wheel are relatively rotatably arranged on the plate frame, grooves are formed on the peripheral surface of the first straightening wheel and the peripheral surface of the second straightening wheel, a space for the flexible cable rod to pass through is formed by the grooves on the first straightening wheel and the grooves on the second straightening wheel, the recurved unit comprises a third straightening wheel which is rotatably arranged on the plate frame, and the peripheral surface of the third straightening wheel is provided with a flexible cable rod matched with the grooves; the cable rod driving assembly is arranged on the plate frame, and the output end of the cable rod driving assembly is respectively connected with the first straightening wheels in the first straightening unit and the second straightening unit through the transmission assembly;
One end of the flexible cable rod is wound on a reel in the cable rod coiling mechanism, the other end of the flexible cable rod passes through a space between a first straightening wheel and a second straightening wheel of the first straightening unit, bypasses a groove on a third straightening wheel of the reverse bending unit and passes through a space between the first straightening wheel and the second straightening wheel of the second straightening unit, and the other end of the flexible cable rod is connected with the argon filling protection device;
the cable rod coiling mechanism further comprises a straightening cable arranging component, wherein the straightening cable arranging component is arranged between the reel and the pushing straightening mechanism and comprises a cable arranging speed reducer, a cable arranging frame, a cable arranging servo motor, a cable arranging rod and a fourth straightening wheel, and the cable arranging speed reducer is arranged on the support; the cable arranging servo motor is arranged on the cable arranging speed reducer, and the output end of the cable arranging servo motor is connected with the input end of the cable arranging speed reducer; the cable arranging rack is arranged on the cable arranging speed reducer; the cable arranging rod is rotatably arranged on the cable arranging frame, and the cable arranging rod is connected with the output end of the cable arranging speed reducer; the fourth straightening wheel is sleeved on the cable arranging rod, and the peripheral surface of the fourth straightening wheel is provided with a groove matched with the flexible cable rod;
The system further comprises more than one cable rod supporting piece, the cable rod supporting pieces are arranged on the flexible cable rod at intervals, the cable rod supporting pieces comprise a top plate, elastic annular steel clamps and rollers, two elastic annular steel clamps are arranged, one ends of the two elastic annular steel clamps are fixedly arranged on the top plate, the two elastic annular steel clamps enclose a through hole for the flexible cable rod to pass through, and the other ends of the two elastic annular steel clamps are bent towards the outside of the through hole; the rollers are arranged in one-to-one correspondence with the elastic annular steel cards, and are rotatably arranged at the other ends of the corresponding elastic annular steel cards.
2. The small-bore pipeline back argon filling protection system of claim 1, wherein the cable bar driving assembly comprises a cable bar servo motor, and the cable bar servo motor is arranged at the bottom of the plate frame.
3. The back argon filling protection system for a small-caliber pipeline according to claim 2, wherein the transmission assembly comprises a driving wheel and two driven wheels, wherein,
the driving wheel is connected with an output shaft of the cable rod servo motor;
The two driven wheels are oppositely arranged at two sides of the driving wheel, and are respectively connected with the driving wheel through belts;
one of the two driven wheels shares a rotation axis with the first straightening wheel of the first straightening unit, and the other of the two driven wheels shares a rotation axis with the second straightening wheel of the second straightening unit.
4. The small-bore pipeline back argon filling protection system of claim 3, wherein the cable bar driving assembly further comprises an electromagnetic clutch, the electromagnetic clutch is arranged on an output shaft of the cable bar servo motor, and the driving wheel is operatively connected with the output shaft of the cable bar servo motor through the electromagnetic clutch.
5. The small bore tubing back argon filling protection system of claim 1 wherein the cable spool assembly further comprises a spool drive assembly comprising a spool servo motor, a drive gear and an annular rack, wherein,
the reel servo motor is arranged at the bottom of the bottom plate;
the transmission gear is fixedly arranged on an output shaft of the reel servo motor;
The annular rack is arranged at the bottom of the reel, and the annular rack is meshed with the transmission gear.
6. The small bore pipeline back argon filling protection system of claim 1 wherein said spool has two opposing disks with said flexible cable wrapped between said disks;
the straightening cable arranging assembly further comprises two first elastic damping blocks, one ends of the two first elastic damping blocks are fixedly arranged on the cable arranging frame, the other ends of the two first elastic damping blocks are provided with arc-shaped surfaces matched with the discs, and the other ends of the two first elastic damping blocks are correspondingly attached to the peripheral surfaces of the two discs respectively.
7. The back argon filling protection system of claim 1, wherein the cable coiling mechanism further comprises a cable pressing assembly, the cable pressing assembly and the straightening and cable arranging assembly are arranged opposite to each other with a central shaft of the reel, the cable pressing assembly comprises a pressing frame, a pressing arm, a stretching spring and a pressing wheel, wherein,
the compression frame is fixedly arranged on the bracket;
the two pressing arms are arranged oppositely, and one ends of the two pressing arms are rotatably connected to the pressing frame;
One end of the extension spring is connected to the compression frame, and the other end of the extension spring is connected to any one compression arm;
the compression wheel is rotatably connected between the other ends of the two compression arms, and the compression wheel and the flexible cable rod are in rolling friction.
8. The small bore pipeline back argon fill protection system of claim 7 wherein said spool has two opposing disks with said flexible cable wrapped between said disks;
the cable rod compacting assembly further comprises two second elastic damping blocks, one ends of the two second elastic damping blocks are fixedly arranged on the compacting frame, the other ends of the two second elastic damping blocks are provided with arc-shaped surfaces matched with the discs, and the other ends of the two second elastic damping blocks are correspondingly attached to the peripheral surfaces of the two discs respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810738036.8A CN108856986B (en) | 2018-07-06 | 2018-07-06 | Small-bore pipeline back argon filling protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810738036.8A CN108856986B (en) | 2018-07-06 | 2018-07-06 | Small-bore pipeline back argon filling protection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108856986A CN108856986A (en) | 2018-11-23 |
| CN108856986B true CN108856986B (en) | 2024-03-26 |
Family
ID=64299696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810738036.8A Active CN108856986B (en) | 2018-07-06 | 2018-07-06 | Small-bore pipeline back argon filling protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108856986B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110560854A (en) * | 2019-08-27 | 2019-12-13 | 中国石油天然气集团公司 | Pipeline circumference segmentation back argon filling protection mechanism |
| CN110900025B (en) * | 2019-10-30 | 2021-04-23 | 中国化学工程第六建设有限公司 | Welding process of hydrogen sulfide resistant pipeline |
| CN112872694A (en) * | 2021-01-12 | 2021-06-01 | 遵义航天新力精密铸锻有限公司 | Welding tool |
| CN113510394A (en) * | 2021-07-16 | 2021-10-19 | 中钞印制技术研究院有限公司 | Thin-wall net barrel clamp |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07293747A (en) * | 1994-04-22 | 1995-11-10 | Sumitomo Densetsu Kk | Winch device for inspecting pipe line and plug for pipe line inlet |
| KR101298227B1 (en) * | 2013-02-26 | 2013-08-22 | 탑전자산업 주식회사 | Apparatus for inspecting pipe |
| KR20130136215A (en) * | 2012-06-04 | 2013-12-12 | 삼성중공업 주식회사 | Pipe purging device |
| CN205967773U (en) * | 2016-08-29 | 2017-02-22 | 四川空分设备(集团)有限责任公司 | Stainless steel pipe welding back of body gas protection device |
| CN208772680U (en) * | 2018-07-06 | 2019-04-23 | 中国石油天然气集团公司 | Small-bore pipeline carries on the back argon-filled protection system |
-
2018
- 2018-07-06 CN CN201810738036.8A patent/CN108856986B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07293747A (en) * | 1994-04-22 | 1995-11-10 | Sumitomo Densetsu Kk | Winch device for inspecting pipe line and plug for pipe line inlet |
| KR20130136215A (en) * | 2012-06-04 | 2013-12-12 | 삼성중공업 주식회사 | Pipe purging device |
| KR101298227B1 (en) * | 2013-02-26 | 2013-08-22 | 탑전자산업 주식회사 | Apparatus for inspecting pipe |
| CN205967773U (en) * | 2016-08-29 | 2017-02-22 | 四川空分设备(集团)有限责任公司 | Stainless steel pipe welding back of body gas protection device |
| CN208772680U (en) * | 2018-07-06 | 2019-04-23 | 中国石油天然气集团公司 | Small-bore pipeline carries on the back argon-filled protection system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108856986A (en) | 2018-11-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108856986B (en) | Small-bore pipeline back argon filling protection system | |
| CN110508984B (en) | Automatic welding robot and automatic welding method thereof | |
| CN211941063U (en) | PVC pipeline cutting device for hydraulic engineering | |
| CN110270789A (en) | A kind of automatic welding of pipelines equipment | |
| CN109127952A (en) | Cable is straightened prosthetic device | |
| CN219151947U (en) | External clamping type pipeline welding machine | |
| CN112045283A (en) | Efficient full-automatic welding device for pipeline | |
| CN214441959U (en) | Steel band coiling mechanism | |
| CN209407282U (en) | Cable is straightened prosthetic device | |
| CN212024372U (en) | Pipeline rolling system | |
| CN206676974U (en) | Large-scale pad full-automatic winding machine | |
| CN105500686B (en) | Spiral sheath wind | |
| CN108788407B (en) | Small-bore pipeline welded junction local shutoff argon filling device with camera | |
| CN101121480A (en) | Rubber hose sheath winding machine | |
| CN219236155U (en) | Cantilever type pipeline taping machine | |
| CN208772687U (en) | A kind of cable bar coiled body | |
| CN208772680U (en) | Small-bore pipeline carries on the back argon-filled protection system | |
| CN201092117Y (en) | Rubber hose sheath wrapping coiler | |
| CN208713106U (en) | A kind of push straightening mechanism | |
| CN112390094B (en) | Cable tightening device | |
| CN213560665U (en) | Stainless steel pipe longitudinal seam internal welding machine | |
| CN107617659A (en) | Large-scale pad full-automatic winding machine | |
| CN208361609U (en) | Water band rolling-up mechanism with self-locking clamping function | |
| CN115535739A (en) | A continuous wind of heat preservation area for oil conveying pipeline | |
| CN213569298U (en) | Rope draw gear for CIPP lining pipeline restoration |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |