CN100493805C - Welding equipment of the sand prevention tube - Google Patents
Welding equipment of the sand prevention tube Download PDFInfo
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- CN100493805C CN100493805C CNB2007101284797A CN200710128479A CN100493805C CN 100493805 C CN100493805 C CN 100493805C CN B2007101284797 A CNB2007101284797 A CN B2007101284797A CN 200710128479 A CN200710128479 A CN 200710128479A CN 100493805 C CN100493805 C CN 100493805C
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- sandpipe
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Abstract
The invention discloses a welding device for sand prevention pipe, which adopts the double-face single spot welding or sew welding art to fix a metal weave net outside a support sheath, therefore, the divulging hole phenomenon of the metal net is eliminated. Because the sand prevention pipe with multilayer metal weave nets is made up, the sand prevention capability and the life-span of the sand prevention pipe are improved. Furthermore, the welding device of the sand prevention pipe achieves penetrating type welding for slender filtering sheath, thereby improving the welding quality of the metal weave net and reducing the making cost of the sand prevention pipe.
Description
The application is to be October 25, application number in 2004 the dividing an application for the application of " manufacture method and the welding equipment of anti-sandpipe " that be 200410084147.X, denomination of invention the applying date.
Technical field
The present invention relates to the anti-sandpipe welding equipment of (or claiming screen casing), be meant especially and a kind ofly adopt resistance spot welding or seam welder to plant to make the welding equipment of the anti-sandpipe that constitutes by filtering materials such as metal knitted nets, belong to technical field of petroleum extraction.
Background technology
In the oil and gas exploitation field,, need to use effectively the down-hole of filter oil air water to prevent sandpipe for the reservoir sand in the oil gas well that prevents to shake out takes to along with oil gas water in the equipment on pit shaft or ground.Tens to hundreds of rice on the long down-hole sand control pipeline section, one leaks sand hole whole down-hole sand control was lost efficacy.In case it is sand control lost efficacy, light then influence the ordinary production of oil gas well, heavy then cause the oil gas well to be scrapped.This just requires sand control pipe filtering material should have following combination property: accurate controlled hole, higher bulk strength, deformability, good corrosion resistance and high reliability.
At present, the sand control filtering material of senior anti-sandpipe (premium screen) use is very expensive multiple layer metal sintering net mostly.This multiple layer metal sintering net is the porous filter material that adopts vacuum sintering technology to make, and it is composited by multiple layer metal mesh grid or metallic fiber or metal dust.Its solderability is better, and available arc welding or plasma welding arc welding and do not produce small opening can guarantee weld strength simultaneously.But the manufacturing cost of this filtering material is higher, and productivity ratio is low, and size also can be subjected to the restriction of vacuum-sintering equipment.
Substitute above-mentioned sintering filtering material with metal establishment net and have very high economic benefit.But conventional solder technology or weld strength are low, or existing the wire netting welding position to exist small opening (shrinkage cavity phenomenon) occurs.Therefore, when adopting the single-layer metal mesh grid, at the local welding hole that occurs easily of arc welding as the filtering material of anti-sandpipe; So, generally adopt mechanical means (as flanging, mode such as compress) the single-layer metal mesh grid to be fixed on the parent tube of anti-sandpipe, still, adopt the intensity and the reliability of the anti-sandpipe that this method makes all relatively low.
Though can use the MULTILAYER COMPOSITE net of non-sintering to make anti-sandpipe,, when welding, even more serious when the shrinkage cavity phenomenon ratio of MULTILAYER COMPOSITE net adopts the individual layer net.Simultaneously, because the thickness of anti-sandpipe is big, fillter section reaches several meters, also brings a series of difficulty to welding, causes by welding method and adopts high-quality, the anti-sandpipe a great problem that always is the puzzlement industry cheaply of wire netting welding.
Summary of the invention
One of purpose of the present invention provides the welding equipment of anti-sandpipe, this welding equipment can adopt resistance spot welding or seam welder to plant and directly carry out metal knitted net compound, eliminate the existence of wire netting welding position and the small opening phenomenon occurs, constitute anti-sandpipe, improve the sand control ability and the service life of anti-sandpipe with multiple layer metal mesh grid.
Two of purpose of the present invention provides the welding equipment of anti-sandpipe, adopts the welding manner of two-sided single-point, to improve metal knitted net welding quality, reduces the manufacturing cost of anti-sandpipe.
The welding equipment of a kind of anti-sandpipe provided by the invention comprises electric welding machine, sand control tube drive device etc.; This electric welding machine is made of electric welding machine body, weldering arm, interior soldering tip, outer soldering tip at least; Wherein, outer soldering tip is arranged on the electric welding machine body, and can drive by the outside weld head driving apparatus and move up and down, interior soldering tip is arranged on respect to outer soldering tip on the weldering arm, and when the inside soldering tip direction of outer soldering tip moves, be positioned at anti-sandpipe and filter the inboard soldering tip of cover and be positioned at the outer soldering tip that anti-sandpipe filters cover outside same end; Interior soldering tip, outer soldering tip are connected respectively on the source of welding current, are used for the welding position that anti-sandpipe filters cover is applied welding current; At least be provided with grip device and mobile device on the sand control tube drive device; Wherein, grip device is used to clamp anti-sandpipe and filters cover, and mobile device is used for that described anti-sandpipe is filtered the direction of overlapping along its welding and moves.
The welding equipment of anti-sandpipe of the present invention, adopting resistance spot welding or seam welder to plant directly carries out metal knitted net compound, this compound coming down to is fixed as one the metal knitted net more than one deck, eliminated the small opening phenomenon that the wire netting welding position exists, can constitute anti-sandpipe, improve the sand control ability and the service life of anti-sandpipe with multiple layer metal mesh grid.In addition, the welding equipment of anti-sandpipe of the present invention can adopt the welding manner of two-sided single-point, makes the welding quality of metal knitted net be improved, and has reduced the manufacturing cost of anti-sandpipe.
Description of drawings
Fig. 1 is the structural representation of the anti-sandpipe of the present invention;
Fig. 2 crosses the structural representation of filter ruffle for the present invention;
Fig. 3 crosses filter ruffle longitudinal seam welding equipment schematic diagram for the present invention;
Fig. 4 welds the limiting foothold schematic diagram at arm weldering end place for the present invention;
Fig. 5 crosses filter ruffle end loops seam welding equipment schematic diagram for the present invention;
Fig. 6 crosses one of filter ruffle end welding schematic diagram for the present invention;
Fig. 7 crosses two of filter ruffle end welding schematic diagram for the present invention;
Fig. 8 crosses three of filter ruffle end welding schematic diagram for the present invention;
Another crosses the filter ruffle schematic diagram to Fig. 9 for the present invention.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and specific embodiment:
Referring to Fig. 1, adopt the anti-sandpipe of manufacturing of the present invention to constitute by having a plurality of weepage holes outer jointing jackets 3 on the parent tube 1 that has a plurality of through holes on the tube wall, mistake filter ruffle 2 and the tube wall; Wherein, cross filter ruffle 2 and be located at parent tube 1 outside, outer jointing jacket 3 was covered with filter ruffle 2 outsides; Concrete manufacture method is:
Step 1: metal filter screen 21 wrapped up in be located at support set 22 outsides, and adopt welding manner that metal filter screen 21 is fixed on described support set 22 outer walls, metal filter screen 21 covers all filtering holes on the support set 22 fully, forms filter ruffle 2;
Step 2: described filter ruffle 2 excessively is fixed on parent tube 1 outer wall, and mistake filter ruffle 2 covers all through holes on the parent tube 1 fully;
Step 3: described outer jointing jacket 3 was set in filter ruffle 2 outsides, and fixes, and described outer jointing jacket 3 covers the described outer surface of crossing filter ruffle 2 filter houses fully with parent tube 1 outer wall.
Wherein, metal filter screen 21 recited above is divided into two kinds of screen pack and diffuser screens.The screen pack filtration, the size of its mesh has determined filtering accuracy, is generally twill fine groove net (being also referred to as twill seat type net) or plain weave fine groove net (being also referred to as plain weave seat type net), its material is a stainless steel; Diffuser screen plays dispersing fluid, reduces the effect of fluid flow resistance, and its mesh is generally the square hole net greater than the screen pack mesh, and the order number is the 10-30 order, and the silk footpath is 2-5 a times of filtering accuracy.The overlap joint surplus of screen pack is generally 5-40mm.
The anti-the most key step of sandpipe of above-mentioned welding is described welding of crossing filter ruffle 2, and is specific as follows:
Referring to Fig. 2, at first, metal filter screen 21 was welded into filter ruffle 2 earlier; Concrete welding method is:
Utilize stainless steel tube as support set 22, and offer a plurality of filtering holes thereon; Metal filter screen 21 is rolled on described support set 22 outer walls with a plurality of through holes, and makes metal filter screen 21 cover all filtering holes on the support set 22 fully.Wrap up in when net, at first need the initiating terminal of metal filter screen 21 mode by spot welding is fixed on support set 22 outer walls, and then to a direction rotational support cover 22, metal filter screen 21 is wrapped up on support set 22 outer walls; In addition, in order to guarantee to wrap up in the net quality, whenever wrap a segment distance, then the part weldering that will wrap of the mode by spot welding is one again, and it is fixed.
Above-mentioned wrap up in that net mode can utilize support set 22 itself focus on relatively rotating, rubbing of rubbing surface certainly, make metal filter screen 21 wrap up on the support set straightly; The concrete network method of wrapping up in is:
For guarantee metal filter screen 21 can and support set 22 post, above-mentioned rubbing surface adopts an elastic surface, and described rubbing surface adopts wearing face, elastomer, supporter to form, the wire netting formation is adopted on the friction member surface, to improve its wearability.
Referring to Fig. 3, after wrapping filter ruffle 2, need the longitudinal seam welding of crossing the metal filter screen 21 on the filter ruffle 2 is good, concrete welding method is: described filter ruffle 2 covers of crossing are set on the welding equipment 10, and this welding equipment 10 is made of outer soldering tip driving mechanism 101, welding machine 102 etc.; Wherein, the welding machine 102 of described welding equipment 10 is made of the source of welding current and interior soldering tip 103, outer soldering tip 104, weldering arm 105; Interior soldering tip 103 is fixed on the weldering arm 105, and interior soldering tip 103 is corresponding one by one mutually with outer soldering tip 104.
When welding, be set on the weldering arm 105 of welding equipment 10 crossing filter ruffle 2 covers, soldering tip 103 can be replaced filter ruffle 3 inwalls from its inside in making; Drive outer soldering tip 104 and interior soldering tip 103 move toward one another then, it is online to make outer soldering tip 104 replace the metal filtration of being on filter ruffle 2 outer walls; Outer soldering tip 104 and interior soldering tip 103 are compressed support set shown in Figure 2 22 and metal filter screen 21 mutually in the position of solder joint; Its pressure is controlled at 0.17-170kgf/mm
2Preferably be controlled at 17kgf/mm
2About.
After stopping to apply welding current, soldering tip 103 separated with mistake filter ruffle 2 with outer soldering tip 104 in the outer soldering tip driving mechanism 101 of welding equipment 10 made, stepper drive equipment 106 drove filter ruffle 2 and moved along its axis, the position that described interior soldering tip 103 and outer soldering tip 104 correspondences are not welded; Repeat above-mentioned welding step once more, finish along crossing the axially whole welding of filter ruffle 2 up to the metal filter screen 21 that covers support set 22 outsides.When driving filter ruffle and move, this crosses the size that filter ruffle 2 each distances that move should be not more than solder joint, and so just can make all soldered mutual UNICOMs of point is one, constitutes intensive weld seam, the quality that assurance is welded.
In order to prevent solder joint because of the heating oxidation, when welding, adopt water-cooling pattern, the solder joint place is lowered the temperature rapidly.In addition, in order to solve big electric current sequential welding, the bad heating problem that causes of cable ventilation condition can be provided with circulating cooling system in described cantilever.
Referring to Fig. 4, have certain length owing to cross filter ruffle 2, can adopt limiting foothold 107 at the solder joint rear side place of weldering arm 105.When soldering tip 104 inside soldering tip 103 directions compressed filter ruffle 2 outside making, this limiting foothold 107 is used to support the outer wall of filter ruffle 2, and further support the weldering arm 105, make that weldering arm 105 can gross distortion, and the interior soldering tip 103 on weldering arm 105 with outside between the soldering tip 104 not can so mutual dislocation.In addition, described limiting foothold 107 can be that V-type, U type or other can prevent the shape of filter ruffle 2 swings, this shape with cross filter ruffle 2 outer rims and mate mutually.
In fact, above-mentioned welding also can be adopted soldering tip 103 in being different from, outer soldering tip 104 to compress the mode of filter ruffle 2 in opposite directions, but crossing the outer wall that filter ruffle 2 outsides two soldering tips of employing compressed filter ruffle 2 simultaneously, apply the moment welding current then.This welding method can not adopt above-mentioned weldering arm 105, and the mode of welding was weaker again behind the filter ruffle 2 but welding effect compressed in opposite directions than above-mentioned interior soldering tip 103, outer soldering tip 104.In addition, adopt above-mentioned interior soldering tip 103, when outer soldering tip 104 compressed the welding manner of filter ruffle 2 in opposite directions, soldering tip 103, outer soldering tip 104 can adopt the weldering wheel in it, and butt welding point is carried out roll welding.
When adopt above-mentioned in soldering tip 103, when outer soldering tip 104 compressed the welding manner of filter ruffle 2 in opposite directions, described weldering arm 105 can adopt nonmagnetic metal, such weldering arm 105 both can conduct electricity, and can avoid the welding current instability again, cross filter ruffle 2 and weldering arm 105 serious heating problems.
When a solder joint welding is finished, the gravity of weldering arm 105 might not can be eliminated crossing filter ruffle 2 applied pressures, at this moment, the moving resistance of crossing filter ruffle 2 can be very big, this can cause that filter ruffle 2 can't move, if powerful advance then can cause filter ruffle 2 scratch or advance inhomogeneous, for this reason, can make weldering arm 105 have certain power that upwarps, make the mobile unaffected of filter ruffle 2.
Referring to Fig. 5, after the longitudinal joint of crossing filter ruffle 2 is welded, also need the circumferential weld of crossing filter ruffle 2 two ends is welded, concrete welding manner still is spot welding, the step of welding is as follows:
At first, the described filter ruffle 2 of crossing is set on the welding equipment 10, this welding equipment 10 is made of outer soldering tip driving mechanism 101, welding machine 102 etc.; Wherein, the welding machine 102 of described welding equipment 10 is made of the source of welding current and interior soldering tip 103, outer soldering tip 104; In being arranged on, welds on the arm 105 by interior soldering tip 103, and corresponding one by one mutually with outer soldering tip 104, and grip device 109 is arranged on the step drive mechanism 106, is used for clamping and crosses filter ruffle 2, and drove filter ruffle 2 rotations under the driving of step drive mechanism 106.
When welding, soldering tip 103 that was positioned at inboard, filter ruffle 2 end and the outer soldering tip 104 of crossing filter ruffle 2 outside same end are replaced in opposite directions, it is compressed as shown in Figure 2 support set 22 and metal filter screen 21 mutually in the position of solder joint; Its pressure is controlled at 0.17-170kgf/mm
2Preferably be controlled at 17kgf/mm
2About.
In described soldering tip 103 and outside 104 moments of soldering tip apply and be not more than 0.3 second welding current, making support set 22 and metal filter screen 21 is one by the mutual arc welding in solder joint place of welding current;
After stopping to apply welding current, in the outer soldering tip driving mechanism 101 of welding equipment 10 makes soldering tip 103 and outer soldering tip 104 with cross filter ruffle 2 and separate, and along crossing the rotation of filter ruffle 2 axle center, the end position that described interior soldering tip 103 and outer soldering tip 104 correspondences are not welded; Repeat above-mentioned welding step once more, finish along the whole welding of support set 22 end outer marginal circumferences up to the metal filter screen 21 that covers support set 22.When driving filter ruffle 2 rotations, this crosses the size that filter ruffle 2 each distances of rotating be not more than solder joint, and so just can make all soldered mutual UNICOMs of point is one, constitutes intensive weld seam, guarantees the quality of welding.In order to prevent solder joint because of the heating oxidation, when welding, adopt water-cooling pattern, the solder joint place is lowered the temperature rapidly.
Referring to Fig. 1,6, more concentrated in order to make welding current, and then improve weld strength, and local projection or groove 24 can be set on the welding position of described support set 22 ends, can improve end sand control ability on the one hand, be convenient to mechanical process again; Can increase the welding current intensity of solder joint on the other hand.In order to guarantee that all solder joints all have enough weld strengths, the size 1-10mm of each solder joint * 1-10mm preferably is not more than 3mm*4mm.
In order to make filter ruffle 2 with parent tube 1 socket fixedly the time, the quality of welding is more reliable, can be when welding filter ruffle 2, metal filter screen 21 ends are welded on welding ring 4 implement electric resistance welding, and after eye metal filter screen 21 ends, edge are welded and are finished in a week, carry out arc welding again, make metal filter screen 21 and welding end form melting wiring 25, in order to improve end sand control reliability, junction in described sealing wire 25 and end welding ring, adopt the mode of arc welding to weld, improve soldering reliability.So also can make the solder joint of arc welding smooth smooth, be convenient to check, the metal filter screen 21 that does not exist arc welding to cause simultaneously shrinks and the problem of shrinkage cavity.
In the time will crossing filter ruffle 2 and parent tube 1 and interfix, will cross filter ruffle 2 earlier and be set on the parent tube 1, and make filter ruffle 2 cover all through holes on the whole parent tube 1, then, end and parent tube 1 outer wall that will cross filter ruffle 2 by the mode of welding are welded as a whole.Can adopt the mode of arc welding to weld during welding.After will crossing filter ruffle 2 and parent tube 1 and interfixing, the outer jointing jacket 3 that will have a plurality of through holes again was set in the outside of filter ruffle 2, made described outer jointing jacket 3 intactly cover filter ruffle 2.
When being in production status in the down-hole in order to reduce filter ruffle 2 impaired may, need be at the sheathed outer jointing jacket 3 in outside of crossing filter ruffle 2.This protective sleeve can adopt the stainless steel material welding, specifically can be the stainless steel tube of offering a plurality of weepage holes.Described stainless steel tube was set on the outer surface of filter ruffle 2, and adopts the mode of arc welding that itself and parent tube are fixed, formed complete anti-sandpipe.
Referring to Fig. 7,8, with 4 welding of end welding ring the time, produce the phenomenon of small opening in order to prevent metal filter screen 21 because of the ball that contracts, advanced spot welding carries out arc welding again.In order to improve the welding quality of arc welding, can adopt the method for the welding that fills silk to carry out last integral solder simultaneously.Specifically be earlier welding wire to be fixed on the position that will weld, adopt electric arc that it is melted, welding wire and metal filter screen 21 are connected as one, metal filter screen 21 and end welding ring 4 connect as one.Welding wire can adopt flat filament or side's silk to be filled into and want the welding position.Because flat filament or side's silk are difficult for rolling, the electric resistance welding location, is convenient in better location therefore.
Referring to Fig. 8, when the metal filter screen 21 on the mistake filter ruffle 2 is connected with end welding ring 4, can also adopt net hoop 6 to realize, it specifically is the end that net hoop 6 is set in metal filter screen 21, and metal filter screen 21 is set in end welding ring 4 outsides, use net hoop 6 together, when the mode of selecting welding or part welding for use connects, improve weld strength metal filter screen 21 and the partial fixing that is set in end welding ring 4.For can being welded well with mistake filter ruffle 2, end welding ring 4 is one, can handle affairs to fill out earlier and establish welding material at end welding ring 4 and the end girth weld 26 that is welded to connect of crossing filter ruffle 2, be called for short and fill silk 41, this silk filling 41 is melted under the effect of welding current during welding, end welding ring 4 is fused into one with crossing filter ruffle 2, form annular solder joint or weld-ring.Another kind make end welding ring 4 can with cross filter ruffle 2 and weld well to the method for one and be: end welding ring 4 with cross filter ruffle 2 be connected the end employing net bind round 6 fixedly connected.In order to make the connection better effects if, between net hoop 6 and end welding ring 4, fill out to establish and fill silk 5, and carry out arc welding, with end welding ring 4, net hoop 6 and cross filter ruffle 2 welderings and be one.
Referring to Fig. 9, also have a kind of situation to be exactly: the filter ruffle 2 excessively of anti-sandpipe can not adopt support set, is the cylindric filter ruffle 2 that formed and just adopt metal filter screen 21 to wrap up in; In this case, the concrete welding method of anti-sandpipe is as follows: anti-sandpipe is made of parent tube 1, mistake filter ruffle 2 and porous outer jointing jacket 3 at least; Cross the outside that filter ruffle 2 is located at parent tube 1, and cover all through holes on the parent tube 1 fully, outer jointing jacket 3 was covered with filter ruffle 2 outsides, and covered the filter house of filter ruffle 2 fully; It adopts following step to weld:
Particularly, be to adopt the spot welding mode will wrap up in to metal filter screen 21 1 ends cylindraceous axially to weld along it; Then, will wrap up in to metal filter screen cylindraceous 21 ends and weld, form filter ruffle 2.
Referring to Fig. 3, vertically during weld metal screen pack 21, at first, will be positioned at the soldering tip of wrapping up in to metal filter screen cylindraceous 21 inboards 103 and replace in opposite directions, it is compressed the position of each layer metal filter screen 21 at solder joint mutually with wrapping up in to the outer soldering tip 104 in metal filter screen cylindraceous 21 outsides; Apply welding current by soldering tip in described 103 and 104 moments of outer soldering tip again, making each layer metal filter screen 21 is one by the local mutual arc welding of welding current; Further with interior soldering tip 103 and outer soldering tip 104 with wrap up in to metal filter screen 21 cylindraceous separates, and along wrapping up in to metal filter screen 21 cylindraceous moves axially, make described in soldering tip 103 and the outer soldering tip 104 correspondences position of not welding; Repeat above-mentioned welding step, up to finishing along wrapping up in all to weld for metal filter screen cylindraceous 21 axial positions.
Referring to Fig. 5, by wrapping up in the filter ruffle 2 excessively that constitutes for metal filter screen 21 cylindraceous, the welding method of its end is: at first, to be positioned at the soldering tip of wrapping up in to inboard, metal filter screen cylindraceous 21 end 103 and replace in opposite directions, it is compressed the position of each layer metal filter screen 21 at solder joint mutually with wrapping up in to the outer soldering tip 104 of metal filter screen 21 outside same end cylindraceous; Apply welding current by soldering tip in described 103 and 104 moments of outer soldering tip again, the solder joint place of each layer metal filter screen 21 by welding current is welded to each other is one; Further with interior soldering tip 103 and outer soldering tip 104 with wrap up in to metal filter screen 21 cylindraceous separates, and be the rotations of metal filter screen cylindraceous 21 axle center along wrapping up in, make described in soldering tip 103 and outer soldering tip 104 next end position that do not weld of correspondence; Repeat above-mentioned step, finish up to covering to wrap up in to metal filter screen 21 cylindraceous all welds along its end outer marginal circumference.
At last, will cross filter ruffle 2 and be welded on the parent tube 1, outer jointing jacket 3 was located at filter ruffle 2 outsides, and cover the described filter house of crossing filter ruffle 2 fully, again outer jointing jacket 3 and parent tube 1 be welded together.
It should be noted that at last: above embodiment only in order to the explanation the present invention and and unrestricted technical scheme described in the invention; Therefore, although this specification has been described in detail the present invention with reference to each above-mentioned embodiment,, those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the present invention; And all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the present invention, and it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1, a kind of welding equipment of anti-sandpipe is characterized in that: described welding equipment is made of welding machine and sand control tube drive device; Wherein, this welding machine is made of electric welding machine body, weldering arm, interior soldering tip, outer soldering tip at least; Wherein, outer soldering tip is arranged on the electric welding machine body, and can drive by the outside weld head driving apparatus and move, interior soldering tip is arranged on respect to outer soldering tip on the weldering arm, and when the inside soldering tip direction of outer soldering tip moves, be positioned at anti-sandpipe and filter the inboard soldering tip of cover and be positioned at outer soldering tip that anti-sandpipe filters the cover outside same end top that offsets; Interior soldering tip, outer soldering tip are connected respectively on the source of welding current, are used for the welding position that anti-sandpipe filters cover is applied welding current;
Described sand control tube drive device is provided with grip device and mobile device; Wherein, grip device is used to clamp anti-sandpipe and filters cover, and mobile device is used for that described anti-sandpipe is filtered the direction of overlapping along its welding and moves or rotate.
2, the welding equipment of anti-sandpipe according to claim 1, it is characterized in that: described weldering arm is with respect to the opposite side of solder joint, in the outside that anti-sandpipe filters cover, be provided with limiting foothold, when being used in described soldering tip and outer soldering tip and replacing in opposite directions, prevent described weldering arm distortion cause in soldering tip and outer soldering tip mutual dislocation.
3, the welding equipment of anti-sandpipe according to claim 1 is characterized in that: described mobile device is configured such that soldered anti-sandpipe filters cover and moves along its axis.
4, the welding equipment of anti-sandpipe according to claim 1 is characterized in that: described mobile device is configured such that soldered anti-sandpipe filters cover and rotates with respect to its axle center.
5, the welding equipment of anti-sandpipe according to claim 1 and 2 is characterized in that: described weldering arm is a nonmagnetic metal, avoids filter ruffle and the heating of weldering arm and weld strength to reduce.
6, the welding equipment of anti-sandpipe according to claim 1 and 2 is characterized in that: described weldering arm upwarps setting, is used for moving or rotates described anti-sandpipe when filtering cover, eliminates anti-sandpipe and filters moving or rotary resistance of cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101284797A CN100493805C (en) | 2004-10-25 | 2004-10-25 | Welding equipment of the sand prevention tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101284797A CN100493805C (en) | 2004-10-25 | 2004-10-25 | Welding equipment of the sand prevention tube |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410084147XA Division CN100432370C (en) | 2004-10-25 | 2004-10-25 | Production method of sand-prevention tube and welding equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101116927A CN101116927A (en) | 2008-02-06 |
| CN100493805C true CN100493805C (en) | 2009-06-03 |
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| CNB2007101284797A Active CN100493805C (en) | 2004-10-25 | 2004-10-25 | Welding equipment of the sand prevention tube |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102513671B (en) * | 2011-11-22 | 2013-12-25 | 胜利油田康贝石油工程装备有限公司 | Super long automatic welding equipment and method for multiple layers of composite metal filter screens |
| CN110695505B (en) * | 2019-10-15 | 2021-08-31 | 莱芜市安邦冶金设备有限公司 | Welding process of pipe body |
| CN112238286A (en) * | 2020-08-31 | 2021-01-19 | 长江三峡集团福建能源投资有限公司 | Welding device for offshore wind power foundation steel pipe pile |
| CN113351976A (en) * | 2021-06-25 | 2021-09-07 | 河南航天液压气动技术有限公司 | Low-power multi-terminal electrode resistance spot welding process |
| CN117583789B (en) * | 2024-01-17 | 2024-03-29 | 云南渝霖模板制造有限公司 | Automatic welding device and welding method for hanging basket |
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| CN101116927A (en) | 2008-02-06 |
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