Condenser girth welding equipment and welding process thereof

Abstract

The present application relates to the technical field of electron beam welding, in particular to a condenser girth seam welding device and welding process, the welding device comprises a purifying mechanism for girth seam welding, the purifying mechanism comprises a positioning vertical I-shaped long plate, long shaft gears supported on both sides of the I-shaped long plate, a lead screw supported in the middle of the I-shaped long plate, a lifter driven by screwing on the lead screw, a sub-actuator driven on each long shaft gear, a bin transmissionally connected between the lifter and the sub-actuator, a row of lead grilles mounted on each bin, and a half-ring device arranged on the bin for driving the lead grilles to swing around, two opposite electron beam emitters are used to carry out efficient electron beam welding on a row of pipeline butt joint girth seams, the lead grilles swing synchronously during the welding process, the electron beam impacts on the pipeline butt joint after passing through the round holes of the lead grilles, and the lead grilles absorb X-rays generated in the electron beam welding.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electron beam welding, in particular to a condenser ring seam welding device and a welding process thereof. BACKGROUND

[0002] The electron beam welding technology is to use high-energy electron beams as processing heat sources, and to make the metal at the joint of the welding part melt quickly by bombarding it with high-energy electron beams, and then to cool it quickly to achieve the purpose of welding. During the electron beam welding process, the high-speed electron beam interacts with the welding part, which produces X-rays. These X-rays can cause damage to the eye lens and potential harm to the skin. Long-term exposure may cause chronic radiation damage to the human body, which poses a certain radiation risk to the equipment operators. Special shielding measures are needed to protect the operators. Lead is a commonly used radiation shielding material. Due to its high density and high atomic number, it can effectively absorb X-rays. Based on the generated X-rays in the electron beam welding, the present application provides a condenser ring seam welding device and a welding process thereof. SUMMARY

[0003] The present application aims to provide a condenser ring seam welding device and a welding process thereof to solve the problems raised in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solution: a condenser ring seam welding device, comprising two oppositely distributed electron beam emitters, a machine arm for supporting the electron beam emitters, and a purification mechanism arranged between the two electron beam emitters for ring seam welding. The purification mechanism comprises a vertically positioned I-shaped long plate, long shaft gears supported on both sides of the I-shaped long plate, a lead screw supported in the middle of the I-shaped long plate, a lifter driven by screwing on the lead screw, a sub-actuator driven on each long shaft gear, a bin transmissionally connected between the lifter and the sub-actuator, a row of lead grilles mounted on each bin, and a semi-ring device arranged on the bin for driving the lead grilles to swing around, and the two opposite semi-ring devices are connected in contact to form a ring body. The lead grille comprises an arc plate and a row of arc pieces integrally connected on the inner wall of the arc plate, and a circular hole is formed in the middle of the lead grille for the electron beam to pass through.

[0005] The bin comprises a bin shell for placing a row of lead grilles, a head shaft group and a pressing device connected on one side of the bin shell, a U-shaped push plate driven by the pressing device for advancing the row of lead grilles, and a sub-driving shaft transmissionally established between the pressing device and the head shaft group. The bin shell comprises an arc plate and a blocking plate fixed vertically on the edges of both sides of the arc plate. The U-shaped push plate moves by pushing the row of lead grilles to eject and replace the lead grilles clamped on the semi-ring device.

[0006] The shell comprises a lifting seat moving along the length direction of the I-shaped long plate, J-shaped plates supported on both sides of the lifting seat, and an amplification set establishing transmission between the J-shaped plates and the I-shaped long plate.

[0007] The J-shaped plate slides through the plate hole of the lifting seat, and a hollow groove is further formed on one side of the lifting seat of the plate hole for the movement of a row of teeth arranged on the J-shaped plate.

[0008] The pressure device comprises a pressure frame fixed on the shell, a worm supported on the pressure frame, a one-way bearing fixed on one end of the worm, a ring plate gear fixed outside the one-way bearing, and a spring set in transmission with the other end of the worm.

[0009] The U-shaped push plate slides through the square cylinder fixed on the shell, the spring set comprises a side gear in transmission with a row of teeth arranged on the other end of the U-shaped push plate, a side shaft fixed on one end of the side gear, an outer gear ring further in transmission with the side gear on one side of the side gear, a middle shaft arranged in the middle of the outer gear ring, a spring connected between the middle shaft and the outer gear ring, a back plate fixed on the bottom surface on one side of the outer gear ring, and the middle shaft and the side shaft are movably sleeved in two through holes of the pressure frame, and the middle shaft is further movably sleeved in a through hole formed in the middle of the back plate.

[0010] The head shaft set comprises an L-shaped limiting plate fixed on the shell, a short tail shaft and a short head shaft supported on the L-shaped limiting plate, and a lap gear fixed on the short head shaft, one end of the short head shaft is in transmission with the ring bevel gear fixed on the short tail shaft through a fixed bevel gear, one end of the short tail shaft is coaxially fixed with the secondary drive shaft, and the other end of the short tail shaft is in transmission with the half ring device through a fixed gear.

[0011] The auxiliary actuator comprises an auxiliary plate frame fixed at one end on the lifting seat, an introduction shaft supported on the auxiliary plate frame, a conveying shaft and a split shaft, and an introduction gear fixed at one end of the introduction shaft, one end of the conveying shaft is connected in transmission with the conical gear fixed at one end of the split shaft through a fixed conical gear, one side of the lap gear is connected in transmission with the cylinder gear fixed on the split shaft through a fixed cylinder gear, the other end of the conveying shaft is connected in transmission with the conical gear fixed at one end of the introduction shaft through a fixed conical gear, and the other end of the introduction shaft is connected in transmission with the long shaft gear on one side through a fixed gear.

[0012] The semi-ring device comprises a semi-ring control plate with a T-shaped arc column groove, two symmetrical short protruding plates fixed on the inner arc wall of the semi-ring control plate, a semi-pressing sliding column sliding through the column hole of the short protruding plate, and a U-shaped elastic sheet with one end lapping on the semi-pressing sliding column, the other end of the U-shaped elastic sheet being fixed on the short protruding plate, one side of the lead grid being fixed with a hard arc plate, the semi-pressing sliding column being provided with a hemispherical block to be clamped into the ball groove of the hard arc plate, and the two opposite semi-pressing sliding columns clamping the hard arc plate, the short T-shaped arc column of the cartridge shell being clamped into the T-shaped arc column groove of the semi-ring control plate, the outer part of the semi-ring control plate being provided with an arc-shaped rack to be connected in transmission with the gear fixed on the short tail shaft, and the inner arc wall of the middle part of the semi-ring control plate being further provided with an arc plate groove for clamping the lead grid.

[0013] A condenser ring seam welding process, comprising the following steps:

[0014] Step one: the preparation stage of electron beam welding, the condenser is conveyed on the track of the processing line through the conveying mechanism, a row of pipes on the condenser is conveyed between the two electron beam emitters, the two symmetrical cartridges are separated to control the two semi-ring devices to move away from each other, the U-shaped tube is positioned between the adjacent two pipe ports of the condenser through the space clamping mechanism, then the two semi-ring devices are close to each other to form a ring body, and the ring body is arranged outside the pipe welding port of the condenser and the U-shaped tube;

[0015] Step two: the initial positioning of the two horizontally opposite electron beam emitters, one electron beam emitter is swung to be obliquely below the pipe welding port of the U-shaped tube and the condenser, and the other electron beam emitter is swung to be obliquely above the pipe welding port of the U-shaped tube and the condenser, and the lead grid opposite the emission port of each electron beam emitter is swung synchronously with the electron beam emitter;

[0016] Step three: girth seam welding, the two electronic beam emitters emit electronic beams to the welding joint of the U-shaped tube and the condenser pipe at the same time, the electronic beams pass through the round hole in the middle of the lead grid and then impact on the welding joint of the U-shaped tube and the condenser pipe, the two electronic beam emitters swing around the welding joint of the pipe, the electronic beam emitter moving from the oblique lower position to the oblique upper position stops, the lead grid is swung synchronously during the process, the girth seam welding of the half face of the welding joint of the pipe is completed, and the electronic beam emitter stops by controlling the small amplitude swing of the emitted electronic beam to weld the remaining seam of the half face, and the relative movement of the electronic beam emitter in the oblique upper position is welded to complete the seam welding of the other half face of the welding joint of the pipe;

[0017] Step four: change the welding joint of the pipe, the two electronic beam emitters stop emitting electronic beams at the same time after welding, the electronic beam emitter in the oblique upper position swings downward to the horizontal state, and the electronic beam emitter in the oblique lower position swings upward to the horizontal state, and the lead grid is swung to the horizontal state synchronously, if the working time of the lead grid absorbing X-rays exceeds the specified period, the lead grid clamped on the half ring device will be pushed out and replaced, the elevator drives the two storage devices by descending, and the two half ring devices are quickly separated horizontally to control the separation of the two half ring devices, and the two half ring devices are lowered to the next welding joint of the pipe and reassembled into a ring around the pipe.

[0018] Compared with the prior art, the beneficial effects of the present application are:

[0019] 1. The two opposite electronic beam emitters are used for efficient electronic beam welding of the girth seam of the pipe joint, the lead grid is swung synchronously during the welding process, the electronic beams pass through the round hole in the lead grid and then impact on the welding joint of the pipe, and the lead grid absorbs the X-rays generated in the electronic beam welding.

[0020] 2. The working period of the lead grid absorbing X-rays is specified, the power accumulated by the pressure device is used to record the working time of the lead grid, when the working time exceeds the specified time, the power accumulated in the pressure device is released, and then the U-shaped push plate moves a row of stored lead grids, the lead grid clamped on the half ring device is pushed away by the adjacent lead grid and replaced, and the lead grid in the absorbing position is ensured to have sufficient adsorption performance by regular replacement. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure of the present application is shown in the figure.

[0022] Figure 2 The structure of the present application is shown in the figure.

[0023] Figure 3 The structure of the present application is shown in the figure.

[0024] Figure 4Lead grid position diagram.

[0025] Figure 5 Cartridge position diagram.

[0026] Figure 6 Lead grid structure diagram.

[0027] Figure 7 Cartridge structure diagram.

[0028] Figure 8 Lifter position diagram.

[0029] Figure 9 Lifter structure diagram.

[0030] Figure 10 Half ring position diagram.

[0031] Figure 11 Pressing device structure diagram.

[0032] Figure 12 Sub-actuator structure diagram.

[0033] Figure 13 Half ring structure diagram.

[0034] Figure 14 Sub-plate frame structure diagram.

[0035] In the figure: electron beam emitter 1, machine arm 2, purification mechanism 3, I-shaped long plate 4, long axis gear 5, lead screw 6, lifter 7, sub-actuator 8, cartridge 9, lead grid 10, half ring 11, condenser 12, U-shaped tube 13, U-shaped push plate 14, pressing device 15, sub-drive shaft 16, cartridge shell 17, head shaft group 18, magnification group 19, J-shaped plate 20, lifting seat 21, back pressure spring 22, follow-up frame 23, first rack 24, magnification shaft 25, magnification gear 26, ring plate gear 27, one-way bearing 28, worm 29, pressing frame 30, spring group 31, back plate 32, outer gear ring 33, spring 34, middle axis 35, side gear 36, side axis 37, short tail shaft 38, L-shaped limiting plate 39, lapping gear 40, short head shaft 41, lead-in shaft 42, lead-in gear 43, conveying shaft 44, sub-plate frame 45, split shaft 46, half ring control plate 47, U-shaped spring 48, half-pressing slide column 49, short convex plate 50, hard arc plate 51. DETAILED DESCRIPTION

[0036] Clearly, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the technical solutions in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0037] Please refer to Figures 1 to 14 The present application provides a technical solution: a condenser ring seam welding equipment, comprising two opposite distributed electron beam emitters 1, a machine arm 2 for supporting the electron beam emitters 1, and a purification mechanism 3 arranged between the two electron beam emitters 1 for ring seam welding, the purification mechanism 3 comprising a vertically positioned I-shaped long plate 4, a long shaft gear 5 supported on both sides of the I-shaped long plate 4, a lead screw 6 supported in the middle of the I-shaped long plate 4, a lifter 7 driven by screwing on the lead screw 6, a sub-actuator 8 driven on each long shaft gear 5, a bin 9 transmission connected between the lifter 7 and the sub-actuator 8, a row of lead grilles 10 mounted on each bin 9, and a half-ring device 11 arranged on the bin 9 for driving the lead grilles 10 to swing around, and the opposite two half-ring devices 11 are connected in contact as a ring body, the lead grilles 10 include a row of arc pieces integrally connected on the inner wall of the arc plate, and the lead grilles 10 are provided with a circular hole in the middle for the electron beam to pass through, the electron beam emitters 1 and the machine arm 2 are both prior art devices, and the long shaft gears 5 and the lead screws 6 are respectively connected with two drive motors in the prior art.

[0038] Reference Figure 7 It is understood that the bin 9 comprises a bin shell 17 for placing a row of lead grilles 10, a head shaft group 18 connected on one side of the bin shell 17 and a pressing device 15, a U-shaped push plate 14 driven by the pressing device 15 for advancing a row of lead grilles 10, and a sub-drive shaft 16 transmission established between the pressing device 15 and the head shaft group 18, the bin shell 17 comprises an arc plate and a blocking plate fixed vertically on both sides of the arc plate, and the U-shaped push plate 14 moves by pushing a row of lead grilles 10 to dislodge and replace the lead grilles 10 clamped on the half-ring device 11.

[0039] Reference Figure 9 It is understood that the bin shell 17 comprises a lifting seat 21 moving along the length direction of the I-shaped long plate 4, a J-shaped plate 20 supported on both sides of the lifting seat 21, and an amplification group 19 transmission established between the J-shaped plate 20 and the I-shaped long plate 4, the lead screw 6 penetrates through the threaded hole opened on the lifting seat 21, the middle plate on the I-shaped long plate 4 slides through the plate hole opened on the lifting seat 21, and a row of V-shaped grooves are opened on both sides of the middle plate, and one end of the J-shaped plate 20 is fixed on the bin shell 17.

[0040] Reference Figure 9It is understood that the J-shaped plate 20 slides through the plate hole opened on the lifting seat 21, and the lifting seat 21 on one side of the plate hole is also provided with a hollow groove for the J-shaped plate 20 to move, the enlarged group 19 includes a row of teeth on the J-shaped plate 20, the enlarged gear 26 is engaged and driven by the row of teeth, the enlarged shaft 25 is fixed at one end of the enlarged gear 26, the follow-up frame 23 supports the enlarged shaft 25, the first rack 24 is fixed at one end of the enlarged shaft 25 and engaged and driven by the shaft gear, and the back pressure spring 22 is fixed at one end of the follow-up frame 23 and is lapped on one end of the first rack 24, the other end of the first rack 24 is clamped into the V-shaped groove opened on the I-shaped long plate 4, the first rack 24 slides through the square hole opened on the follow-up frame 23, and the follow-up frame 23 is fixed at one end on the lifting seat 21, and the enlarged shaft 25 is movably sleeved in the through hole opened on the follow-up frame 23.

[0041] Reference Figure 11 It is understood that the pressing and releasing device 15 includes a pressing and releasing frame 30 fixed at one end on the shell 17, a worm 29 supported on the pressing and releasing frame 30, a one-way bearing 28 fixedly sleeved at one end of the worm 29, a ring plate gear 27 fixedly sleeved outside the one-way bearing 28, and a spring set 31 driven at the other end of the worm 29, and the end of the auxiliary drive shaft 16 is engaged and driven by the ring plate gear 27 through the fixed shaft gear, and the worm 29 is movably sleeved in the column hole opened on the pressing and releasing frame 30.

[0042] Reference Figure 11 It is understood that one end of the U-shaped push plate 14 slides through the square cylinder fixed on the shell 17, the spring set 31 includes a side gear 36 engaged and driven by a row of teeth arranged at the other end of the U-shaped push plate 14, a side shaft 37 fixed at one end of the side gear 36, an outer gear ring 33 engaged and driven on one side of the side gear 36, a middle shaft 35 arranged in the middle of the outer gear ring 33, a spring 34 connected between the middle shaft 35 and the outer gear ring 33, a back plate 32 fixed on the bottom surface on one side of the outer gear ring 33, the middle shaft 35 and the side shaft 37 are movably sleeved in the two through holes opened on the pressing and releasing frame 30 respectively, the middle shaft 35 is also movably sleeved in the through hole opened in the middle of the back plate 32, and the middle shaft 35 is engaged and driven by the spiral teeth on the worm 29 through the fixed gear.

[0043] The head shaft set 18 includes an L-shaped limiting plate 39 fixed at one end on the shell 17, a short tail shaft 38 and a short head shaft 41 supported on the L-shaped limiting plate 39, and a lapping gear 40 fixed on the short head shaft 41, the short head shaft 41 is engaged and driven by the annular bevel gear fixed on the short tail shaft 38 through the fixed bevel gear at one end, the short tail shaft 38 is coaxially fixed at one end with the auxiliary drive shaft 16, and the other end of the short tail shaft 38 is engaged and driven by the half-ring device 11 through the fixed gear, and the short tail shaft 38 and the short head shaft 41 are movably sleeved in the two through holes opened on the L-shaped limiting plate 39 respectively.

[0044] The auxiliary actuator 8 includes a secondary plate frame 45 with one end fixed to the lifting seat 21, an inlet shaft 42, a conveying shaft 44 and a branch shaft 46 supported on the secondary plate frame 45, and an inlet gear 43 fixed at one end of the inlet shaft 42. One end of the conveying shaft 44 is connected to the bevel gear fixed at one end of the branch shaft 46 through a fixed bevel gear. The branch shaft 46 is connected to the overlapping gear 40 on one side through a fixed ply gear. The other end of the conveying shaft 44 is connected to the bevel gear fixed at one end of the inlet shaft 42 through a fixed bevel gear. The other end of the inlet shaft 42 is connected to the long shaft gear 5 on one side through a fixed gear. The inlet shaft 42, the conveying shaft 44 and the branch shaft 46 are respectively movably sleeved in different through holes opened on the secondary plate frame 45.

[0045] The semi-ring device 11 includes a semi-ring control plate 47 with an internal T-shaped arc groove, two symmetrical short convex plates 50 fixed on the inner arc wall of the semi-ring control plate 47, a semi-pressure sliding column 49 that slides through a column hole in the short convex plate 50, and a U-shaped spring piece 48 with one end resting on the semi-pressure sliding column 49 and the other end of the U-shaped spring piece 48 fixed on the short convex plate 50. A rigid arc plate 51 is fixed on one side of the lead grid 10, and a hemisphere is set on the semi-pressure sliding column 49. The block is inserted into the ball groove on the rigid arc plate 51, and two opposing semi-pressure sliding pillars 49 cooperate to clamp the rigid arc plate 51. The shell 17 is provided with short T-shaped arc pillars to be inserted into the T-shaped arc pillar grooves on the semi-ring control plate 47. The outside of the semi-ring control plate 47 is provided with an arc-shaped rack to mesh with the gear fixed on the short tail shaft 38 for transmission. The inner arc wall in the middle of the semi-ring control plate 47 is also provided with an arc plate groove for the lead grid 10 to be inserted. (See reference here.) Figure 13 and Figure 12 Let's understand the structure of the waist position of the semi-ring control plate 47. Figure 13 If the lead grille 10 on the right side is to be pushed off the lead grille 10 on the left side from the semi-circular control plate 47, on the one hand, the pushing force must be greater than the locking pressure of the semi-pressure sliding column 49; on the other hand, the lead grille 10 on the semi-circular control plate 47 must remain in complete contact with the pushed lead grille 10. If the semi-circular control plate 47 rotates, the semi-circular control plate 47 is not... Figure 14 As shown in the position, the semi-circular control plate 47 itself can intercept the pushed lead grille 10. This means that when replacing the lead grille 10, it needs to be fixed in place when the lead grille 10 in the adsorption position returns to a horizontal position. Figure 6 In the state shown, the semi-circular control plate 47 will pause. If the thrust provided by the U-shaped push plate 14 is sufficient, the lead grid 10 controlled in the middle of the semi-circular control plate 47 will be directly pushed out and replaced.

[0046] A condenser circumferential weld process includes the following steps:

[0047] Step one: electron beam welding preparation stage, through the delivery mechanism to control the condenser 12 in the processing line track delivery, so that a row of pipes on the condenser 12 between the two electron beam emitter 1, the two half ring ware 9 is separated to control the two half ring ware 11 away from the separation, through the space clamping mechanism to position the U-shaped pipe 13 between the adjacent two pipe ports of the condenser 12, and then the two half ring ware 11 close to splice into a ring body, the spliced ring body is arranged outside the pipe welding port of the condenser 12 and the U-shaped pipe 13.

[0048] Step two: the initial positioning of the two horizontally opposite electron beam emitters 1, one electron beam emitter 1 swings to the oblique lower side of the U-shaped pipe 13 and the pipe welding port of the condenser 12, and the other electron beam emitter 1 swings to the oblique upper side of the U-shaped pipe 13 and the pipe welding port of the condenser 12, and the lead grid 10 opposite the emission port of each electron beam emitter 1 swings synchronously with the electron beam emitter 1.

[0049] Step three: ring seam welding, the two inclined electron beam emitters 1 emit electron beams to the pipe welding port of the U-shaped pipe 13 and the condenser 12 at the same time, the electron beams pass through the middle hole of the lead grid 10 and then shoot at the pipe welding port of the U-shaped pipe 13 and the condenser 12, and the two electron beam emitters 1 swing around the pipe welding port at the same time, the oblique lower electron beam emitter 1 stops after moving to the oblique upper side, and the lead grid 10 through which the laser beam passes swings synchronously during the process, completing the large arc seam welding of half of the pipe welding port, and the stopped electron beam emitter 1 welds the remaining seam of half of the pipe welding port by controlling the small amplitude swing of the emitted electron beam, and the oblique upper electron beam emitter 1 welds the other half of the pipe welding port by relative movement, completing the seam welding of the other half of the pipe welding port.

[0050] Step four: change the pipe welding port, after the welding is completed, the two electron beam emitters 1 stop emitting electron beams at the same time, the oblique upper electron beam emitter 1 is reset to swing to the horizontal state downward, and the oblique lower electron beam emitter 1 is reset to swing to the horizontal state upward, and the lead grid 10 is reset to swing to the horizontal state synchronously, if the lead grid 10 absorbs X-rays beyond the specified period, the lead grid 10 clamped on the half ring ware 11 will be ejected and replaced, the elevator 7 drives the two warehouse 9 by descending, the two initially separated warehouse 9 are quickly separated horizontally to control the two half ring ware 11 to be separated, and the two half ring ware 11 are lowered to the next pipe welding port to be spliced into a ring body around the pipe.

[0051] Two U-shaped elastic pieces 48 apply pressure to make two half pressure slide columns 49 clamp the hard arc plate 51, so that the half ring control plate 47 controls the synchronous swing of the lead grid 10 by swinging around the welding joint of the pipeline, and the power source of the swing of the half ring control plate 47 is the rotation of the long shaft gear 5, that is, the long shaft gear 5 drives the introduction gear 43, then the introduction shaft 42 drives the transmission shaft 44, then the split shaft 46 drives the lap gear 40, then the short head shaft 41 drives the short tail shaft 38, then the half ring control plate 47 moves.

[0052] The half ring device 11 is separated by the swing of the bin 9 because Figure 9 The rotation of the lead screw 6 in the half ring device 11 drives the lifting seat 21 to lift, and the first rack 24 is pushed out of the V-shaped groove, and the translation of the first rack 24 drives the amplification shaft 25 to rotate, then the amplification gear 26 rotates to drive the J-shaped plate 20, and the two J-shaped plates 20 are far away from each other, and then the two symmetrical bin shells 17 are separated, and the bin shell 17 drives the half ring control plate 47, so that the bin 9 and the half ring device 11 move horizontally synchronously, and the two half ring devices 11 are separated, so that the half ring device 11 is not intercepted by the U-shaped tube 13 during lifting.

[0053] The application also has an automatic replacement mechanism for the lead grid 10, which is used to absorb X-rays generated when the electron beam impacts the welding joint of the pipeline, but needs to be replaced regularly to avoid the adsorption performance of the saturated lead grid 10 from being reduced, and the movement of the half ring control plate 47 can reflect the adsorption time of the lead grid 10 every time the electron beam ring seam is welded, and the cumulative movement time is recorded by the clockwork 34, and the electron beam welding process, the half ring control plate 47 swings around, the welding is completed, the half ring control plate 47 swings reversely to reset, and the short tail shaft 38 drives the auxiliary shaft 16 during the resetting process, then the ring plate gear 27 drives the one-way bearing 28, then the worm 29 drives the middle shaft 35, the clockwork 34 is contracted to store power, and when the clockwork 34 has enough power, that is, enough to break the clamping state of the half ring device 11, the lead grid 10 clamped on the half ring device 11 is directly pushed out to be replaced, specifically, the clockwork 34 releases power to make the outer ring gear 33 rotate, then the side gear 36 rotates to cause the U-shaped push plate 14 to translate, the U-shaped push plate 14 pushes a row of lead grids 10, and the lead grid 10 clamped on the half ring device 11 is pushed away by the adjacent lead grid 10 to be replaced.

[0054] Although the embodiments of the application have been shown and described, it is to be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the application, and the scope of the application is defined by the appended claims and their equivalents.

Claims

1. A condenser girth welding apparatus comprising two oppositely distributed electron beam emitters (1), a machine arm (2) for supporting the electron beam emitters (1), and a purging mechanism (3) arranged between the two electron beam emitters (1) for girth welding, characterized in that: The purifying mechanism (3) comprises a positioning vertical I-shaped long plate (4), long shaft gears (5) supported on both sides of the I-shaped long plate (4), a lead screw (6) supported in the middle of the I-shaped long plate (4), a lifter (7) driven by screwing on the lead screw (6), a sub-actuator (8) driven on each long shaft gear (5), a bin (9) transmissionally connected between the lifter (7) and the sub-actuator (8), a row of lead grilles (10) installed on each bin (9), and half ring devices (11) arranged on the bin (9) for driving the lead grilles (10) to swing around, and the two half ring devices (11) are in contact and jointed as a ring body, the lead grille (10) comprises an arc plate and a row of arc pieces integrally connected on the inner wall of the arc plate, and a circular hole is formed in the middle of the lead grille (10) for the electron beam to pass through.

2. A condenser girth welding apparatus as claimed in claim 1, wherein: The bin (9) comprises a bin shell (17) for placing a row of lead grilles (10), a head shaft group (18) and a pressing device (15) connected on one side of the bin shell (17), a U-shaped push plate (14) driven by the pressing device (15) for pushing a row of lead grilles (10), and a sub-driving shaft (16) transmissionally established between the pressing device (15) and the head shaft group (18), the bin shell (17) comprises an arc plate and blocking plates fixed vertically on both side edges of the arc plate, and the U-shaped push plate (14) moves by pushing a row of lead grilles (10) to push out and replace the lead grilles (10) clamped on the half ring device (11).

3. A condenser girth welding apparatus as claimed in claim 2, wherein: The bin shell (17) comprises a lifting seat (21) moving along the length direction of the I-shaped long plate (4), J-shaped plates (20) supported on both sides of the lifting seat (21), and an amplification group (19) transmissionally established between the J-shaped plates (20) and the I-shaped long plate (4), the lead screw (6) penetrates through a threaded hole formed on the lifting seat (21), a middle plate on the I-shaped long plate (4) slides through a plate hole formed on the lifting seat (21), a row of V-shaped grooves are formed on both sides of the middle plate, and one end of the J-shaped plate (20) is fixed on the bin shell (17).

4. A condenser girth welding apparatus as claimed in claim 3, wherein: The J-shaped plate (20) slides through the plate hole formed on the lifting seat (21), and an empty groove is further formed on one side of the lifting seat (21) for the J-shaped plate (20) to movably arrange a row of teeth, the amplification group (19) comprises an amplification gear (26) transmissionally connected by a row of teeth meshing on the J-shaped plate (20), an amplification shaft (25) fixed on one end of the amplification gear (26), a follow-up frame (23) supporting the amplification shaft (25), a first rack (24) transmissionally connected by meshing with a shaft gear fixed on one end of the amplification shaft (25), and a back pressure spring piece (22) fixed on one end of the follow-up frame (23), the other end of the back pressure spring piece (22) is lapped on one end of the first rack (24), the other end of the first rack (24) is clamped into a V-shaped groove formed on the I-shaped long plate (4), the first rack (24) slides through a square hole formed on the follow-up frame (23), and one end of the follow-up frame (23) is fixed on the lifting seat (21).

5. A condenser girth welding apparatus as claimed in claim 2, wherein: The pressing device (15) comprises a pressing frame (30) fixed at one end of the cartridge shell (17), a worm (29) supported on the pressing frame (30), a one-way bearing (28) fixed at one end of the worm (29), a ring plate gear (27) fixed outside the one-way bearing (28), and a spring set (31) driven at the other end of the worm (29), and the end of the secondary drive shaft (16) is connected with the ring plate gear (27) through a fixed shaft gear.

6. A condenser girth welding apparatus as claimed in claim 5, wherein: The U-shaped push plate (14) slides through a square cylinder fixed on the cartridge shell (17), the spring set (31) comprises a side gear (36) engaged with a row of teeth arranged at the other end of the U-shaped push plate (14), a side shaft (37) fixed at one end of the side gear (36), an outer gear ring (33) further engaged with the side gear (36) on one side, a middle shaft (35) arranged in the middle of the outer gear ring (33), a spring (34) connected between the middle shaft (35) and the outer gear ring (33), a back plate (32) fixed on the bottom surface of one side of the outer gear ring (33), and the middle shaft (35) and the side shaft (37) are respectively movably sleeved in two through holes formed in the pressing frame (30), and the middle shaft (35) is movably sleeved in a through hole formed in the middle of the back plate (32), and the middle shaft (35) is engaged with the spiral teeth on the worm (29) through a fixed gear.

7. A condenser girth welding apparatus as claimed in claim 3, wherein: The head shaft set (18) comprises an L-shaped limiting plate (39) fixed on the cartridge shell (17), a short tail shaft (38) and a short head shaft (41) supported on the L-shaped limiting plate (39), and a lap gear (40) fixed on the short head shaft (41), one end of the short head shaft (41) is connected with the ring bevel gear fixed on the short tail shaft (38) through a fixed bevel gear, one end of the short tail shaft (38) is coaxially fixed with the secondary drive shaft (16), and the other end of the short tail shaft (38) is connected with the half ring device (11) through a fixed gear.

8. A condenser girth welding apparatus as claimed in claim 7, wherein: The secondary drive device (8) comprises a secondary plate frame (45) fixed at one end of the lifting seat (21), an introduction shaft (42) supported on the secondary plate frame (45), a conveying shaft (44) and a branch shaft (46), and an introduction gear (43) fixed at one end of the introduction shaft (42), one end of the conveying shaft (44) is connected with the bevel gear fixed at one end of the branch shaft (46) through a fixed bevel gear, the branch shaft (46) is connected with the lap gear (40) on one side through a fixed cylinder gear, the other end of the conveying shaft (44) is connected with the bevel gear fixed at one end of the introduction shaft (42) through a fixed bevel gear, and the other end of the introduction shaft (42) is connected with the long shaft gear (5) on one side through a fixed gear.

9. A condenser girth welding apparatus as claimed in claim 7, wherein: The half ring device (11) comprises a half ring control plate (47) with a T-shaped arc column slot, two symmetrical short protruding plates (50) fixed on the inner arc wall of the half ring control plate (47), a half pressure sliding column (49) sliding through the column hole of the short protruding plate (50), and a U-shaped elastic sheet (48) with one end on the half pressure sliding column (49) and the other end fixed on the short protruding plate (50). The lead grid (10) is fixed with a hard arc plate (51) on one side, the half pressure sliding column (49) is provided with a half ball block to be clamped into the ball slot of the hard arc plate (51), and the two opposite half pressure sliding columns (49) cooperate to clamp the hard arc plate (51). The short T-shaped arc column is arranged on the cartridge shell (17) to be clamped into the T-shaped arc column slot of the half ring control plate (47). The outer part of the half ring control plate (47) is provided with an arc-shaped rack to be meshed and driven with the gear fixed on the short tail shaft (38). The inner arc wall of the middle part of the half ring control plate (47) is also provided with an arc plate slot for clamping the lead grid (10).

10. A condenser girth welding process for use with the condenser girth welding apparatus of claim 1, wherein, The method comprises the following steps: Step one: electron beam welding preparation stage, the condenser is transported on the processing line track by the conveying mechanism, so that a row of pipes on the condenser is transported between the two electron beam emitters (1), the two symmetrical cartridges (9) are separated to control the two half ring devices (11) to move away from each other, the U-shaped tube is positioned between the adjacent two pipe ports of the condenser by the space clamping mechanism, then the two half ring devices (11) are close to each other to form a ring body, and the ring body is arranged outside the welding joint of the condenser and the U-shaped tube pipe; Step two: initial positioning of the two horizontally opposite electron beam emitters (1), one electron beam emitter (1) swings to the obliquely lower side of the welding joint of the U-shaped tube and the condenser pipe, and the other electron beam emitter (1) swings to the obliquely upper side of the welding joint of the U-shaped tube and the condenser pipe, and the lead grid (10) opposite the emitting port of each electron beam emitter (1) swings synchronously with the electron beam emitter (1); Step three: ring seam welding, the two obliquely opposite electron beam emitters (1) emit electron beams to the welding joint of the U-shaped tube and the condenser pipe at the same time, the electron beams are emitted at the welding joint of the U-shaped tube and the condenser pipe after passing through the middle circular hole of the lead grid (10), and the two electron beam emitters (1) swing around the welding joint of the pipe at the same time, the obliquely lower electron beam emitter (1) stops after moving to the obliquely upper side, the lead grid (10) passing through the laser beam swings synchronously in the process, the large arc seam welding of one half of the welding joint of the pipe is completed, and the stopped electron beam emitter (1) welds the remaining seam of the half by controlling the small amplitude swing of the emitted electron beam, and the obliquely upper electron beam emitter (1) moves relatively to weld the other half of the welding joint of the pipe. Step four: change the pipe welding port, after welding, two electron beam emitters (1) stop emitting electron beam at the same time, the oblique upper electron beam emitter (1) resets to the horizontal state by swinging downward, and the oblique lower electron beam emitter (1) resets to the horizontal state by swinging upward, the lead grid (10) swings to the horizontal state at the same time, if the lead grid (10) absorbs X-rays beyond the specified period, the lead grid (10) clamped on the half-ring device (11) will be ejected and replaced, the elevator (7) drives two warehouses (9) by descending, moves the initial two warehouses (9) to quickly separate horizontally to control the separation of two half-ring devices (11), and the two half-ring devices (11) are lowered to the next pipe welding port to be reconnected into a ring body surrounding the pipe.

Images