CN205764384U - The welding apparatus in pipe of butt tube - Google Patents

Abstract

This utility model provides the welding apparatus in pipe of a kind of butt tube, it at least includes: soldering set bar, be set in the ceramic nozzle outside soldering set bar and locating ring, soldering set bar be have axially through the electric conductor of the first inlet channel, the connection that soldering set pole pair answers the nozzle of ceramic nozzle can be removably mounted has electrode, electrode radially extends the outside to ceramic nozzle, electrode can be with soldering set bar synchronous rotary, the sidewall of the first inlet channel is provided with the inducing QI through hole being connected with spout, and the outer ring surface of locating ring can coordinate with the internal surface gaps of butt tube.The welding apparatus in pipe of butt tube that this utility model provides, it is possible to carry out managing interior welding in inserting butt tube to be welded, and ensure that in postwelding pipe that welding bead molded surface is smooth, smooth, zero defect.

Description

The welding apparatus in pipe of butt tube

Technical field

This utility model relates to welding technology field, particularly to the welding apparatus in pipe of a kind of butt tube.

Background technology

Normally used small-bore pipe docking welding apparatus in pipe is endoporus welding machine, and inner hole welding of rapid cooling can become by single face welding and double face Type.But the welding system of endoporus welding machine cannot be introduced into bore 15 millimeters, is subjected in the pipe that pipe range is 3000 millimeters.And Generally small-bore, long tube, the welding technique of docking complete penetraction and fusion in welding structure of employing is: padded single welding, one side are manual The welding technique such as argon arc welding, single face welding and double face shaping, but, these welding techniques can make welding bead molded surface in pipe Have liner or formed depression, protruding, drip the defects such as tumor, lack of penetration and undercut, in these defects not only give pipe, medium fluid is formed Resistance, affects liquid flowing, and owing to medium can form local corrosion in the delay of inside pipe wall fault location, the most vertical (falling film type) heat transmission equipment, these defects directly affect the formation of liquid film in heat exchanger tube, or destroy the integrity of liquid film, so that Heat exchanger tube inner surface loses liquid film protection, causes anoxia to be subject to manage the corrosion failure of interior medium, directly affects the use of equipment Life-span.

Utility model content

The purpose of this utility model is to provide the pipe of a kind of butt tube being subjected in can entering small-bore pipe Interior welder.

For reaching above-mentioned purpose, this utility model provides the welding apparatus in pipe of a kind of butt tube, and it at least includes: electricity Pole adjusting part, described electrode regulating assembly includes soldering set bar, is set in the ceramic nozzle outside described soldering set bar, described pottery The sidewall of nozzle is provided with spout, described soldering set bar be have axially through the electric conductor of the first inlet channel, described soldering set The connection that pole pair answers described nozzle can be removably mounted has electrode, described electrode to radially extend the outside to described ceramic nozzle, and Described electrode can be with described soldering set bar synchronous rotary, and the sidewall of described first inlet channel is provided with and is connected with described spout Inducing QI through hole；Positioning component, described positioning component includes that locating ring, described locating ring are set in the outside of described soldering set bar, institute The outer ring surface stating locating ring can coordinate with the internal surface gaps of described butt tube.

The welding apparatus in pipe of butt tube as above, wherein, the welding apparatus in pipe of described butt tube also includes: lead Electrical connection module, described in be conductively connected assembly and include conducting rod and be set in the insulation sleeve outside described conducting rod, described conduction One end of bar is connected with described soldering set bar, and described soldering set bar can be with described conducting rod synchronous axial system, one end of described locating ring Face is connected on the end face of described ceramic nozzle, and the other end of described locating ring is connected to the end face of one end of described conducting rod On, described conducting rod be provided with axially through the second inlet channel, described second inlet channel and described first inlet channel phase Connection forms protection gas passage.

The welding apparatus in pipe of butt tube as above, wherein, described conducting rod is that multiple metal tube is connected by screw thread Connect and form.

The welding apparatus in pipe of butt tube as above, wherein, the other end of described conducting rod is provided with outside connecting The joint of portion's source of the gas.

The welding apparatus in pipe of butt tube as above, wherein, described positioning component also includes locating cover, described location Lid is set in the outside of described insulation sleeve and connects with described insulation sleeve, and the outer ring surface of described locating cover can be with described butt tube Internal face matched in clearance, one end of described locating cover the most described soldering set bar outwards turns down formation can be with the end face of described butt tube The rib of snap-fit engagement.

The welding apparatus in pipe of butt tube as above, wherein, the welding apparatus in pipe of described butt tube also includes: rotation Turning adjusting part, described rotation adjusting part includes the expansion set being set in outside described conducting rod and is set in outside described expansion set Regulation stationary fixture, described expansion set is positioned at the side of described conducting rod the most described soldering set bar, solid by rotating described regulation Clamp tool drives described expansion set synchronous axial system, and described expansion set rotates and drives described conducting rod synchronous axial system.

The welding apparatus in pipe of butt tube as above, wherein, along the moving direction of described electrode, in described electrode The angle formed between the interface of mandrel line and described butt tube is right angle or acute angle.

The welding apparatus in pipe of butt tube as above, wherein, the length of described butt tube is less than or equal to 3m, institute State the internal diameter of butt tube more than or equal to 15mm.

Compared with prior art, advantage of the present utility model is as follows:

The welding apparatus in pipe of the butt tube that this utility model provides, it is possible to insert in butt tube to be welded, and by driving Soldering set bar rotational band moving electrode welds in moving into line pipe along the interface synchronization of butt tube to be welded, has both efficiently solved bore 15 Millimeter and more than, within length 3000 millimeters, pipe docking cannot realize welding by both sides, uses existing welding procedure welding bead inner surface The depression of appearance, projection, droplet tumor, lack of penetration a, undercut etc. affect liquid in pipe flowing or the defect of liquid film forming, in turn ensure that weldering In rear pipe, welding bead molded surface is smooth, smooth, zero defect, and can make the first-time qualification rate of pipe butt weld ray Non-Destructive Testing More than 99%, thus the butt welding of heat exchanger tube in manufacturing for heat transmission equipment, particularly in-service vertical (falling film type) heat exchange is set The butt welding of standby heat exchanger tube provides guarantee reliably.

Accompanying drawing explanation

The following drawings is only intended to, in schematically illustrating this utility model and explaining, not limit model of the present utility model Enclose.Wherein:

Fig. 1 is the structural representation of the welding apparatus in pipe of the butt tube according to the offer of this utility model one embodiment；

Fig. 2 be the butt tube shown in Fig. 1 welding apparatus in pipe in the structural representation of electrode regulating assembly；

Fig. 3 be the butt tube shown in Fig. 1 welding apparatus in pipe in be conductively connected the structural representation of assembly；

Fig. 4 be the butt tube shown in Fig. 1 welding apparatus in pipe in the structural representation of locating ring；

Fig. 5 be the butt tube shown in Fig. 1 welding apparatus in pipe in the structural representation of locating cover.

Drawing reference numeral illustrates:

1-soldering set bar；11-the first inlet channel；2-ceramic nozzle；21-spout；3-electrode；4-locating ring；5-conducting rod； 51-the second inlet channel；52-joint；6-insulation sleeve；7-locating cover；71-rib；8-expansion set；9-regulates stationary fixture；10-pair Adapter.

Detailed description of the invention

In order to the technical solution of the utility model, purpose and effect are had clearer understanding, in conjunction with accompanying drawing, this is described The detailed description of the invention of utility model.

As it is shown in figure 1, this utility model provides the welding apparatus in pipe of a kind of butt tube, it at least includes: electrode is adjusted Joint assembly and positioning component, wherein, as in figure 2 it is shown, electrode regulating assembly includes soldering set bar 1, is set in the pottery outside soldering set bar 1 Porcelain nozzle 2, the sidewall of ceramic nozzle 2 is provided with spout 21, soldering set bar 1 be have axially through the leading of the first inlet channel 11 Electricity body, the connection that can be removably mounted at the corresponding spout 21 of soldering set bar 1 has electrode 3, electrode 3 to radially extend the outside to ceramic nozzle 2, I.e. electrode 3 extending radially through soldering set bar 1 and extending to the outside of ceramic nozzle 2 through spout 21 along soldering set bar 1, electrode 3 can be with Soldering set bar 1 synchronous rotary, is i.e. rotated to complete to manage interior welding along the interface of butt tube 10 by rotation soldering set bar 1 band moving electrode 3, The sidewall of the first inlet channel 11 is provided with the inducing QI through hole (not shown) being connected with spout 21, so that protective gas Spout 21 can be entered, owing to ceramic nozzle 2 has good insulating, high temperature resistant etc. via the first inlet channel 11, inducing QI through hole Advantage so that protection gas can be full of the periphery of electrode 3 under the restriction effect of spout 21, to avoid in welding process, greatly Gas pollutes welding bead, thus in postwelding pipe has been effectively ensured, welding bead molded surface is smooth, smooth, zero defect；As shown in Figure 1 and Figure 4, Positioning component includes that locating ring 4, locating ring 4 are insulator, and locating ring 4 is set in the outside of soldering set bar 1, the outer shroud of locating ring 4 Face can coordinate with the internal surface gaps of butt tube 10, affects welding quality to avoid soldering set bar 1 to teetertotter in butt tube 10.

Wherein, the length of butt tube 10 is less than or equal to 3m, and the internal diameter of butt tube is more than or equal to 15mm, nozzle 2 Outer surface and the inner surface of butt tube 10 between there is the gap of 3mm～5mm.

When carrying out managing interior welding, first, the welding apparatus in pipe of butt tube is arranged in butt tube 10 to be welded, specifically Step is: is first inserted in butt tube 10 to be welded by electrode regulating assembly, and makes the electrode 3 interface just to butt tube 10, then selects Take the locating ring 4 of outer ring surface and butt tube 10 internal diameter matched in clearance to be welded, it is preferred that the outer ring surface of the locating ring 4 chosen with treat Between the inner surface of weldering butt tube 10, there is about 1mm gap, then locating ring 4 is set in the outside of soldering set bar 1, afterwards will Welding machine electrically connects with soldering set bar 1, and external air source seals with the first inlet channel 11 and connects；Secondly, external air source is opened to first Being filled with protection gas in inlet channel 11, protection gas passes sequentially through the first inlet channel 11, inducing QI through hole, enters spout 21 and in spray The periphery of full electrode 3 under the restriction effect of mouth 21, and in welding process, continue to be filled with protection in the first inlet channel 11 Gas, utilizes protection air stripping height weldquality, reduces weld seam heat effect bandwidth, it is to avoid material aoxidizes；Finally, open welding machine, Rotate soldering set bar 1 simultaneously, make soldering set bar 1 band moving electrode 3 rotate along the interface synchronization of butt tube 10 and manage interior welding.

It should be noted that the action rotating soldering set bar 1 can use motor to drive, it is also possible to drive manually；When When employing rotates manually, soldering set bar 1 both can be extended butt tube 10 to be welded, and sheathed at the elongated end of soldering set bar 1 It is easy to the insulation driving handle of hand-held rotation, drives soldering set bar 1 synchronous axial system by rotating insulation driving handle；When using motor During driving, only the output shaft of motor need to be connected with soldering set bar 1.

The welding apparatus in pipe of the butt tube that this utility model provides, it is possible to insert in butt tube 10 to be welded, and by driving Dynamic soldering set bar 1 rotational band moving electrode 3 welds in moving into line pipe along the interface synchronization of butt tube 10 to be welded, has both efficiently solved pipe Internal diameter 15 millimeters and more than, within length 3000 millimeters, pipe docking cannot realize welding by both sides, uses existing welding procedure welding bead The depression of inner surface appearance, projection, droplet tumor, lack of penetration a, undercut etc. affect liquid in pipe flowing or the defect of liquid film forming, protect again Demonstrate,prove that welding bead molded surface in postwelding pipe is smooth, smooth, zero defect, and pipe butt weld ray Non-Destructive Testing can have been made once Qualification rate is more than 99%, thus the butt welding of heat exchanger tube in manufacturing for heat transmission equipment, particularly to in-service vertical (falling film type) The butt welding of heat transmission equipment heat exchanger tube provides guarantee reliably.

Of the present utility model one preferred embodiment in, for the ease of coordinate different size specification docking to be welded Pipe 10 uses, as it is shown on figure 3, the welding apparatus in pipe of butt tube also includes: be conductively connected assembly, is conductively connected assembly and includes leading Electric pole 5 and be set in the insulation sleeve 6 outside conducting rod 5, one end of conducting rod 5 is provided with female thread, and soldering set bar 1 is provided with outer spiral shell Stricture of vagina, is coordinated with externally threaded by female thread, and one end of conducting rod 5 is connected with soldering set bar 1, and soldering set bar 1 can be same with conducting rod 5 Step rotates, and the end face of locating ring 4 is connected on the end face of ceramic nozzle 2, and the other end of locating ring 4 is connected to conducting rod 5 One end end face on, i.e. locating ring 4 is clipped between ceramic nozzle 2 and conducting rod 5, conducting rod 5 be provided with axially through second Inlet channel 51, the second inlet channel 51 is connected with the first inlet channel 11 and forms protection gas passage, before welding, by outside Source of the gas is connected with protection gas passage, and opens external air source and be filled with protection gas in protection gas passage, and protection gas is along protection gas Passage enters spout 21 through water conservancy diversion through hole, and is full of electrode 3 periphery under the restriction effect of spout 21, and in welding process, External air source continues to be filled with protection gas in protection gas passage, when welding, is connected with conducting rod 5 by welding machine, and electric current is by leading Electric pole 5, soldering set bar 1 are transferred to electrode 3, simultaneously by driving manually or motor drives and is conductively connected assembly and rotates, make Being conductively connected assembly and drive soldering set bar 1 synchronous axial system, soldering set bar 1 rotational band moving electrode 3 moves along the interface of butt tube 10 to be welded, Complete to manage interior welding, wherein, owing to the external diameter of conducting rod 5 is more than soldering set bar 1, in order to avoid conducting rod 5 when rotating with to be welded The tube wall contact position of butt tube 10 forms the situation of short circuit and occurs, at the sheathed insulation sleeve in the outside of conducting rod 56, by insulation sleeve 6 Conducting rod 5 is separated with butt tube 10 to be welded, thus ensure that electric current can flow to electrode 3 by conducting rod 5.

Wherein, be enclosed between outer surface and the inner surface of butt tube 10 of the insulation sleeve 6 outside conducting rod 5 have 2mm～ The gap of 4mm.

In the present embodiment, it is possible to use shorter soldering set bar 1, by being conductively connected assembly by welding machine and soldering set bar 1 Electrical connection, external air source are connected with water conservancy diversion through hole, i.e. extend the length of soldering set bar 1 by being conductively connected assembly so that soldering set Bar 1 can extend to butt tube 10 to be welded outside by being conductively connected assembly, so that welding machine, external air source and soldering set bar 1 Between connection become simple and convenient.

Further, conducting rod 5 is threaded connection for multiple metal tubes and forms, so so that conducting rod 5 can be according to treating The length adjustment of weldering butt tube 10, i.e. according to the length of butt tube 10 to be welded, selects appropriate metal tube to be connected to form conduction Bar 5, thus avoid conducting rod 5 too short impact welding and the connection of external air source, or conducting rod 5 long impact welding effect Rate.

Concrete, a length of 300mm-500mm of each metal tube, the side of each metal tube is provided with female thread, and opposite side sets Having external screw thread, adjacent two metal tubes are connected with the externally threaded cooperation that spins by female thread.

Further, for the ease of the connection between external air source and conducting rod 5, the other end of conducting rod 5 be provided with for Connecting the joint 52 of external air source, external air source seals with joint 52 and connects, so that between external air source and conducting rod 5 Connect simpler convenience.

In a concrete example of the present embodiment, as it is shown in figure 5, positioning component also includes that locating cover 7, locating cover 7 overlap Be located at the outside of insulation sleeve 6 and connect with insulation sleeve 6, the outer ring surface of locating cover 7 can with the internal face matched in clearance of butt tube 10, One end of locating cover 7 soldering set bar 1 dorsad outwards turns down formation and can drive with the rib 71 of the end face snap-fit engagement of butt tube 10 When positioning component rotates, can somewhat apply active force to rib 71, make rib 71 fit with butt tube 10 end face, i.e. pass through rib 71 with the snap-fit engagement of butt tube 10 end face, limit electrode regulating assembly, be conductively connected moving axially of assembly so that Electrode 3 can move interface along butt tube 10 all the time.

Further, as shown in Figure 4, the welding apparatus in pipe of butt tube also includes: rotate adjusting part, rotates adjusting part Including the expansion set 8 being set in outside conducting rod 5 be set in the regulation stationary fixture 9 expansion set 8 outside, by regulating stationary fixture 9 make expansion set 8 and conducting rod 5 swelling, and expansion set 8 is positioned at the side of conducting rod 5 soldering set bar 1 dorsad, by rotating regulation stationary fixture 9 Driving expansion set 8 synchronous axial system, expansion set 8 rotational band moving conductive rod 5 synchronous axial system, when electrode 3 uses and drives manually, can be straight Switching through and move regulation stationary fixture 9, regulate stationary fixture 9 band moving conductive rod 5 synchronous axial system, conducting rod 5 rotates and drives soldering set bar 1 same Step rotates, soldering set bar 1 rotational band moving electrode 3 synchronous axial system, when electrode 3 uses motor to drive, can by regulation stationary fixture 9 and The output shaft of motor is connected, and motor drives regulation stationary fixture 9 to rotate according to the rotating speed set, and regulation stationary fixture 9 drives Conducting rod 5 synchronous axial system, conducting rod 5 rotates and drives soldering set bar 1 synchronous axial system, soldering set bar 1 rotational band moving electrode 3 synchronous axial system.

Further, along the moving direction of electrode 3, formed between central axis and the interface of butt tube 10 of electrode 3 Angle is right angle or acute angle, so so that the welding apparatus in pipe of butt tube can be according to different butt tubes to be welded 10 Welding requirements, adjusts electrode 3 position, with the welding demand of satisfied difference butt tube to be welded 10.

Concrete, electrode 3 is connected with soldering set bar 1 by jackscrew.

Illustrate assembling and the use of the welding apparatus in pipe of the butt tube that this utility model provides below in conjunction with the accompanying drawings Process:

As it is shown in figure 1, it is outside that earthenware muzzle is located at soldering set bar 1, at the spout 21 of the corresponding ceramic nozzle 2 of soldering set bar 1 Place extends radially through electrode 3, and makes electrode 3 extend radially out ceramic nozzle 2, is connected with soldering set bar 1 by electrode 3 by jackscrew Connecing, then spun with soldering set bar 1 one end of conducting rod 5, wherein, conducting rod 5 is that the length according to butt tube 10 to be welded selects to fit The metal tube of amount is threaded connection and forms, then is set on soldering set bar 1 by locating ring 4, and makes the end face of locating ring 4 abut On the end face of ceramic nozzle 2, then insulation sleeve 6 is set in the outside of conducting rod 5, and makes end face and the location of insulation sleeve 6 The other end of ring 4 abuts against, and wherein, the welding apparatus in pipe for the ease of butt tube rotates in butt tube 10 to be welded, choosing Locating ring 4 outer ring surface and the inner surface of butt tube to be welded 10 between there is about 1mm gap, afterwards locating cover 7 is overlapped It is located at the outside of insulation sleeve 6, finally expansion set 8 is set in the side of conducting rod 5 soldering set bar 1 dorsad, and will regulation stationary fixture 9 It is set in expansion set 8 outside, makes expansion set 8 be connected with conducting rod 5 by regulation stationary fixture 9, so far complete in the pipe of butt tube The assembling of welder；

It should be noted that wherein, electrode 3 is tungsten electrode, protection gas is argon, welding machine is argon arc welding machine；

In use, the welding apparatus in pipe of the butt tube assembled is inserted butt tube 10 to be welded, makes electrode 3 just treat The interface of weldering butt tube 10, rib 71 and the end face snap-fit engagement of butt tube 10 to be welded, then butt tube 10 to be welded is fixed, then External air source being connected with the gas source connector 52 of conducting rod 5, welding machine is connected with conducting rod 5, afterwards, open external air source to Being filled with protection gas in protection gas passage, protection gas passes sequentially through protection gas passage, inducing QI through hole, finally enters spout 21 and in spray The periphery of full electrode 3 under the restriction effect of mouth 21, and in welding process, continue to be filled with protection gas in protection gas passage, Finally, open welding machine, simultaneously by driving manually or motor drives regulation stationary fixture 9 to rotate, regulate stationary fixture 9 Band moving conductive rod 5 synchronous axial system, conducting rod 5 rotates and drives soldering set bar 1 synchronous axial system, and soldering set bar 1 rotational band moving electrode 3 is along to be welded The interface synchronization of butt tube 10 has rotated manages interior welding.

The welding apparatus in pipe of butt tube using this utility model to provide carries out the method managing interior welding, specifically include with Lower step:

S10: carry out butt tube to be welded welding pre-treatment；

S20: the welding apparatus in pipe of butt tube is inserted in butt tube to be welded, and makes electrode just butt tube to be welded be connect Mouthful；

S30: butt tube to be welded uses the outer fixture of pipe fix；

S40: external air source is connected with soldering set bar, and soldering set bar is electrically connected with welding machine；

S50: open external air source, be passed through protection gas in soldering set bar, until the periphery of electrode is full of protection gas；

S60: according to material, the wall thickness of butt tube, adjust the welding condition of welding machine；

S70: open welding machine, rotates soldering set bar, electrode rotated pipe with soldering set bar along interface synchronization in not packed column GC Welding；

S80: unload down tube extenal fixation fixture, rotates butt tube, completes to manage the welding of outer packed column GC by welding machine；

S90: close welding machine and external air source, the welding apparatus in pipe of butt tube is extracted in butt tube.

Wherein, in pipe during the welding of not packed column GC, the technological parameter of welding machine is: voltage 9V～11V, electric current 45A～ 60A, electrode is tungsten electrode, protection gas be purity 99.99%, flow be the argon of 10L/min～12L/min, the rotating speed of electrode is 50mm/min～70mm/min；When managing the welding of outer packed column GC, the technological parameter of welding machine is: voltage 9V～11V, electric current 50A ～70A, electrode is tungsten electrode, protection gas be purity 99.99%, flow be the argon of 10L/min～12L/min.

The welding method of butt tube that this utility model provides, both efficiently solved bore 15 millimeters and more than, length Within 3000 millimeters pipe docking cannot realize welding by both sides, the depression using existing welding procedure welding bead inner surface to occur, projection, Drip tumor, lack of penetration, undercut etc. and affect liquid in pipe flowing or the defect of liquid film forming, in turn ensure that welding bead molding table in postwelding pipe Face is smooth, smooth, zero defect, and can make the first-time qualification rate of pipe butt weld ray Non-Destructive Testing more than 99%, thus The butt welding of heat exchanger tube, the particularly butt welding to in-service vertical (falling film type) heat transmission equipment heat exchanger tube in manufacturing for heat transmission equipment Provide guarantee reliably.

Further, welding pre-treatment specifically includes following steps:

S101: process end face and the groove of butt tube to be welded on machine cut equipment；

S102: remove the burr of the pipe end of butt tube to be welded, oil stain, and clean with acetone.

Welding pre-treatment has been effectively ensured that welding bead molded surface in postwelding pipe is smooth, smooth, zero defect.

Below with weld length as 3m, as a example by internal diameter is the butt tube of 15mm, illustrate the right of this utility model offer The concrete operation step of the welding method of adapter:

End face and the groove of processing butt tube to be welded on machine cut equipment are standby；

Remove the burr of generation, oil stain after the tube end maching of butt tube to be welded, and clean with acetone；

The welding apparatus in pipe of butt tube is inserted in butt tube to be welded, and makes the tungsten electrode interface just to butt tube to be welded；

Butt tube to be welded use the outer fixture of pipe fix；

External air source is connected with soldering set bar, and soldering set bar is electrically connected with argon arc welding machine；

Open external air source, be passed through in soldering set bar protection gas be purity 99.99%, flow be 10L/min～12L/min Argon, until the periphery of tungsten electrode is full of argon；

Material according to butt tube, wall thickness, adjust the technological parameter of argon arc welding machine, and the technological parameter making argon arc welding machine is: Voltage 9V～11V, electric current 45A～60A；

Open argon arc welding machine, rotate the welding apparatus in pipe of butt tube, make tungsten electrode turning with 50mm/min～70mm/min Speed rotated pipe along interface synchronization in the welding of not packed column GC；

Unloading down tube extenal fixation fixture, rotate butt tube, the technological parameter adjusting welding machine is: voltage 9V～11V, electric current 50A ～70A, complete to manage the welding of outer packed column GC by argon arc welding machine；

Close argon arc welding machine and external air source, the welding apparatus in pipe of butt tube is extracted in butt tube.

In sum, the welding apparatus in pipe of the butt tube that this utility model provides, it is possible to insert in butt tube to be welded, and By driving soldering set bar rotational band moving electrode to weld in moving into line pipe along the interface synchronization of butt tube to be welded, both efficiently solved Bore 15 millimeters and more than, within length 3000 millimeters, pipe docking cannot realize welding by both sides, uses existing welding procedure to weld The depression of road inner surface appearance, projection, droplet tumor, lack of penetration a, undercut etc. affect liquid in pipe flowing or the defect of liquid film forming, again Ensure that in postwelding pipe that welding bead molded surface is smooth, smooth, zero defect, and the one of pipe butt weld ray Non-Destructive Testing can be made Secondary qualification rate is more than 99%, thus the butt welding of heat exchanger tube in manufacturing for heat transmission equipment, particularly to in-service vertical (falling liquid film Formula) butt welding of heat transmission equipment heat exchanger tube provides guarantee reliably.

The foregoing is only the schematic detailed description of the invention of this utility model, be not limited to model of the present utility model Enclose.Any those skilled in the art, the equivalent variations made on the premise of without departing from design of the present utility model and principle With amendment, the scope of this utility model protection all should be belonged to.And it should be noted that each ingredient of the present utility model also Being not limited only to above-mentioned overall applicability, each technical characteristic described in description of the present utility model can select according to actual needs One independent employing or select the multinomial use that combines, therefore, this utility model covers and this case invention in the nature of things Put other relevant combination and specifically apply.

Claims (8)

1. the welding apparatus in pipe of a butt tube, it is characterised in that the welding apparatus in pipe of described butt tube at least includes:

Electrode regulating assembly, described electrode regulating assembly includes soldering set bar, is set in the ceramic nozzle outside described soldering set bar, institute The sidewall stating ceramic nozzle is provided with spout, described soldering set bar be have axially through the electric conductor of the first inlet channel, institute Stating soldering set pole pair the connection that can be removably mounted of described nozzle should have electrode, described electrode to radially extend outside described ceramic nozzle Portion, and described electrode can be with described soldering set bar synchronous rotary, the sidewall of described first inlet channel is provided with and described spout phase The inducing QI through hole of connection；

Positioning component, described positioning component includes that locating ring, described locating ring are set in the outside of described soldering set bar, described location The outer ring surface of ring can coordinate with the internal surface gaps of described butt tube.

The welding apparatus in pipe of butt tube the most according to claim 1, it is characterised in that welding in the pipe of described butt tube Device also includes:

Be conductively connected assembly, described in be conductively connected assembly and include conducting rod and be set in the insulation sleeve outside described conducting rod, institute The one end stating conducting rod is connected with described soldering set bar, and described soldering set bar can be with described conducting rod synchronous axial system, described locating ring End face be connected on the end face of described ceramic nozzle, the other end of described locating ring is connected to one end of described conducting rod End face on, described conducting rod be provided with axially through the second inlet channel, described second inlet channel and described first air inlet Passage is connected and forms protection gas passage.

The welding apparatus in pipe of butt tube the most according to claim 2, it is characterised in that

Described conducting rod is that multiple metal tube is threaded connection and forms.

The welding apparatus in pipe of butt tube the most according to claim 2, it is characterised in that

The other end of described conducting rod is provided with the joint for connecting external air source.

The welding apparatus in pipe of butt tube the most according to claim 2, it is characterised in that

Described positioning component also include locating cover, described locating cover be set in described insulation sleeve outside and with described insulation sleeve phase Connecing, the outer ring surface of described locating cover can be with the internal face matched in clearance of described butt tube, described locating cover the most described soldering set bar One end outwards turn down formation can be with the rib of the end face snap-fit engagement of described butt tube.

The welding apparatus in pipe of butt tube the most according to claim 2, it is characterised in that welding in the pipe of described butt tube Device also includes:

Rotating adjusting part, described rotation adjusting part includes the expansion set being set in outside described conducting rod and is set in described swollen Regulation stationary fixture outside Tao, described expansion set is positioned at the side of described conducting rod the most described soldering set bar, described by rotating Regulation stationary fixture drives described expansion set synchronous axial system, and described expansion set rotates and drives described conducting rod synchronous axial system.

The welding apparatus in pipe of butt tube the most according to any one of claim 1 to 6, it is characterised in that

Along the moving direction of described electrode, the angle formed between central axis and the interface of described butt tube of described electrode is Right angle or acute angle.

The welding apparatus in pipe of butt tube the most according to any one of claim 1 to 6, it is characterised in that

The length of described butt tube is less than or equal to 3m, and the internal diameter of described butt tube is more than or equal to 15mm.