CN205342318U - 3 self -aligning spherical support installation auxiliary device - Google Patents

3 self -aligning spherical support installation auxiliary device Download PDF

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CN205342318U
CN205342318U CN201620117548.9U CN201620117548U CN205342318U CN 205342318 U CN205342318 U CN 205342318U CN 201620117548 U CN201620117548 U CN 201620117548U CN 205342318 U CN205342318 U CN 205342318U
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supported
point
point seat
welding
seat
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张烨
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Anhui Masteel Engineering & Technology Group Co Ltd
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Anhui Masteel Engineering & Technology Group Co Ltd
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Abstract

The utility model discloses a 3 self -aligning spherical support installation auxiliary device, including three point support seat, dummy shaft round pin and interim rigid support II, follow ring circumferencial direction interval 120, form 3 points of equipartition, these central line both sides of 3 symmetry respectively set up a three point support seat, and the dummy shaft round pin is located between the three point support seat inboard of these two symmetries of each other, in the outside of the three point support of two symmetries of each other seat, sets up an interim rigid support II about center line symmetry. The both sides of three point support seat receive interim rigid support II's supporting role, are equipped with the dummy shaft between the three point support seat and sell the mounting dimension with the hold request, and interim rigid support II and dummy shaft round pin no. 1 work, guarantee that the axial of three point support seat and ring belong to the plane keeping parallelism for the side of three point support seat is all perpendicular with ring place plane, makes the distance between inboard upper portions of two three point support seats and the lower part equal, prepares for installation and welding.

Description

A kind of 3 self-aligning spherical support installation auxiliary devices
Technical field
The present invention relates to field of metallurgical mechanical equipment, particularly relate to a kind of 3 self-aligning spherical support installation auxiliary devices.
Background technology
The connecting device of converter shell and backing ring is one of key equipment in converter system, pneumatic steelmaking operation not only to undertake the converter weight of fully loaded molten steel, also to ensure that converter can be verted operation smoothly, in the process, connecting device to bear the effect of the moments such as very big tension and compression, distortion, being easy to tear phenomenon, therefore, welding quality and the precision of connecting device are most important.The connecting device of current China converter shell and backing ring mainly has two kinds, and a kind of is supported at three point connected mode, another kind of for suspension connected mode.
3 ball pivot coupling arrangements have following weak point: 1) 3 ball pivot coupling arrangement lower tray require higher with body of heater link position, lower portion of furnace body perforate precision is inadequate, making the installation difficulty between 3 ball pivot coupling arrangements, body of heater and backing ring big, later period maintenance workload is big.2) 3 ball pivot coupling arrangement Horizontal limiting parts fine can not must meet the thermal deformation that body of heater expanded by heating causes, and still limits the furnace shell harmomegathus relative to backing ring in using.4) existing 3 ball pivot coupling arrangements use B-C post bolt to be easily broken off in the later stage.Therefore, 3 ball pivot coupling arrangements are easily deformed in use procedure even to be torn, this is also the installation of 3 ball pivot coupling arrangements and welding is had higher requirement, the technology of usual domestic employing is mainly the method for postwelding processing, it is exactly the axis hole of first preliminary working supporting seat, goes up lathe after erecting and welding again and carry out secondary method for finishing manufactured to ensure precision.Although this method ensures highly effective for installation accuracy, but the main equipment handling back and forth for deadweight tens tons or up to a hundred tons is very inconvenient, also results in manufacturing schedule simultaneously and extends, increases the deficiency of cost of manufacture.
Chinese utility model patent, Authorization Notice No.: CN202945265U, authorized announcement date: 2013.05.22, disclose a kind of 3 ball pivot coupling arrangements of the converter modified model for coupling between converter body with backing ring.Include the ball pivot supporting arrangement on the annular backing ring being arranged on converter, ball pivot supporting arrangement circumferentially 120 ° of interval is provided with three, form 3 uniform points, described ball pivot supporting arrangement includes pillar bolt and the ball-type seat being wrapped in outside pillar bolt, its B-C post bolt is up-small and down-big pyramidal structure, supporting gap, inclination angle is left between pillar bolt and ball-type seat, the bottom of described backing ring is also equipped with horizontal supporting device, circumferentially it is symmetrically distributed with multiple, thermal distortion compensation can be carried out in any position of converter when uninterrupted blowing, the installed above of backing ring has block seat frame and locking block seat.This device can adapt to converter thermal deformation automatically, installs and maintenance load is little, it is prevented that fracture occurs in a male screw stress.It is disadvantageous in that: the patent describe the planform that 3 self-aligning spherical supports connect, but how this device is installed and does not introduce, if erecting and welding is bad, yet suffer from 3 self-aligning spherical support connecting devices easily to tear on backing ring, service life is short, the problem that fault rate is high, not only schedule delays, impact produces, and can bring very big economic loss to enterprise.
Chinese invention patent, Authorization Notice No. CN101798613B, authorized announcement date 2012.08.15, disclose a kind of on-line quick change method of three-point spherical support of large-size converter, first make hydraulic synchronous jacking device and make alignment pin by gripper shoe Bolt sizes, on backing ring and set up inspection platform in stove, remove gripper shoe bolt and nut and with removing residue bolt and nut after alignment pin fixed support plate, remove slag-screening board and self-aligning spherical support bolt and nut simultaneously, now adopt jacking apparatus by body of heater jacking, remove and change 3 self-aligning spherical supports on backing ring, 3 self-aligning spherical support bolt and nuts are fastened after falling body of heater after rise, inspection platform is installed gripper shoe bolt and nut in stove, return dress slag-screening board, remove simple platform in inspection platform and stove, jacking apparatus appears on the scene, complete 3 self-aligning spherical supports of converter to change.Its weak point: remove and installation process to 3 self-aligning spherical supports described in the step 5 of this patent and step 6, but it is not described in detail, 3 self-aligning spherical support erection sequences also do not limit, how to install, perform the process of this patent yet suffers from certain difficulty of construction in reality, and it is likely to result in the prolongation duration, increases installation cost.
Summary of the invention
1. invention to solve the technical problem that
For the problem being easily deformed after 3 self-aligning spherical support welding of converter of prior art, the invention provides a kind of 3 self-aligning spherical support installation auxiliary devices.It accurately controls deflection by arranging auxiliary device realization welding, the operation originally needing secondary operations and secondary assembling is reduced to and once completes, effectively reduces cost of manufacture and shorten manufacturing schedule.
2. technical scheme
For solving the problems referred to above, technical scheme provided by the invention is:
A kind of 3 self-aligning spherical support installation auxiliary devices, including supported at three point seat, dummy shaft pin and interim rigid support II, along backing ring circumferencial direction interval 1200Forming 3 uniform points, these centrage both sides of 3 are respectively symmetrically and arrange a supported at three point seat, dummy shaft pins position inside the supported at three point seat that the two is mutually symmetrical with between, in the outside of two mutually symmetrical with supported at three point seats, it is symmetrical arranged an interim rigid support II about centrage.The both sides of supported at three point seat are subject to the supporting role of interim rigid support II, dummy shaft pin it is provided with to keep the installation dimension required between supported at three point seat, interim rigid support II and dummy shaft pin one work, guarantee the axial of supported at three point seat and backing ring place plane keeping parallelism, the side making supported at three point seat is all vertical with backing ring place plane, make the distance between two supported at three point seat inside upper part and bottom equal, prepare for installation and welding.
Preferably, three-point support includes supported at three point seat, backing ring, converter flange, spherical pad and supported at three point bolt, supported at three point seat is arranged on backing ring, and supported at three point seat top is provided with spherical pad, the axis direction of dummy shaft pin, supported at three point seat axially and backing ring place horizontal plane parallel to each other.So it is present to ensure that the size qualification of supported at three point seat.
Preferably, the cross section of supported at three point seat both sides is all vertical with backing ring place plane.It it is so the size qualification in order to further ensure that supported at three point seat.
Preferably, using d-axis to replace dummy shaft pin, supported at three point screw bolt passes converter flange and spherical pad are arranged on d-axis, and wherein, d-axis is provided with the screw matched with supported at three point bolt.
Preferably, one end of interim rigid support II is welded on backing ring, and the other end is welded on the top of supported at three point seat lateral surface.
The installation method of a kind of 3 self-aligning spherical supports, utilizes above-described a kind of 3 self-aligning spherical support installation auxiliary devices, the steps include:
Supported at three point seat in above-described a kind of 3 the self-aligning spherical support installation auxiliary devices of A, fabrication and processing, interim rigid support II, supported at three point bolt and dummy shaft pin;
B, installing converter furnace shell and backing ring;
C, along 120 ° of backing ring circumferencial direction interval, form 3 uniform points, backing ring base plate found out this centrage of 3;
D, about this centrage lateral symmetry of 3, one supported at three point seat is respectively installed;
E, dummy shaft pin is arranged on supported at three point seat axially;
The size of each supported at three point seat on F, inspection backing ring, if size is errorless, takes out dummy shaft pin, uses d-axis to replace dummy shaft pin to be arranged on supported at three point seat axially;
G, being arranged on d-axis by supported at three point bolt, spherical pad and pad are arranged on supported at three point bolt, and supported at three point bolt, through converter flange, arranges nut on the top of supported at three point bolt;
H, all install after check again for supported at three point seat size.The axially vertical degree of supported at three point seat, namely top distance and bottom distance between inside two supported at three point seats, qualified apart from equal expression supported at three point seat longitudinal size, by measuring the absolute altitude on supported at three point seat distance backing ring, highly equal i.e. expression axis horizontal degree is qualified.
Preferably, spherical pad includes ball ring, upper spheric seating, lower peripheral surface pad and lower peripheral surface seat from top to bottom successively, and pad is positioned on spherical pad.
Preferably, the pore size axially of supported at three point seat and the external diameter of dummy shaft pin match, and d-axis is identical with the external diameter of dummy shaft pin.
Preferably, adopting the groove of edge planer machining supported at three point seat in step A, groove type is U-shaped groove.
The welding method of a kind of 3 self-aligning spherical supports, the steps include:
The first step, a kind of 3 self-aligning spherical supports in accordance with the above installation method, after step E, the solid supported at three point seat of point;
Second step, backing ring have three-point mount supported at three point seat, an interim rigid support II is respectively welded for the outside of the supported at three point seat of centrage lateral symmetry setting on each point;
After 3rd step, interim rigid support II have welded, the size of three pairs of supported at three point seats on backing ring base plate is checked, after qualified, carry out next step operation;
4th step, preheating, be laid on heating plate on the back side of backing ring base plate and preheat;
5th step, adopt edge planer machining supported at three point seat groove, groove type is U-shaped groove, weld supported at three point seat;
6th step, all weld seams should carry out stress relief annealing after being soldered immediately, are annealed according to the regulation of the post weld heat treatment in JB4709-2000 " GB150-1998 welding code ";Post weld heat treatment should meet the regulation of design document, and when no standard, the post weld heat treatment of pipeline should meet the pertinent regulations in national standard " Industrial Metal pipeline engineering job specfication " GB50235;The post weld heat treatment of equipment should meet the pertinent regulations of existing industry standard " pressure vessel welding code " JB/T4709.
Annealing temperature is with the 40 DEG C of slow intensifications that heat up per hour, it is heated to 580 DEG C and is incubated 5 hours, according still further to per hour 40 DEG C of slow coolings until being reduced to room temperature, method for annealing is crawler type electrical heating annealing, heating plate is respectively placed in the inner side of backing ring base plate, i.e. the back side of supported at three point seat weld seam, is covered on the weld seam of backing ring plate outer side supported at three point seat, the outside of heating plate heat-preservation cotton covers, in order to be incubated.
7th step, remove interim rigid support II;
8th step, postwelding removing surface, postwelding is clean with electric angle grinder polishing by face of weld, crator, spatter thing, and undercut exceeds standard after locating repair welding and polishes;
Taking out false bearing pin after 9th step, weld seam detection are qualified and install actually used d-axis, check the overall dimensions of 3 self-aligning spherical supports, inspection method is also by measuring absolute altitude, the distance between inside supported at three point seat, size qualification, handing over after paint.
Preferably, being preheating to temperature in the 4th step is carry out welding sequence again after 150 DEG C~180 DEG C.
Preferably, in the 5th step, welding method adopts SMAW, adopts SMAW welding condition to select such as table 1.
Table 1 welding condition
Preferably, in 5th step, the material according to converter shell that selects of welding rod is determined, tensile strength, converter shell material is divided into: low-alloy steel, high-alloy steel and non-ferrous metal, so wlding selects standard to be that the converter shell for low-alloy steel material selects tensile strength equal with converter shell material;For the converter shell of high-alloy steel and non-ferrous metal material, select chemical composition equal with converter shell material.The wlding of the converter shell of 16MnR and Q345 material selects identical.
Preferably, in the 5th step, root adopts carbon arc air gouging to carry out back chipping, adoptsCarbon-point is removed, and technological parameter is shown in table 2 below, and angular grinding device is low due to grinding efficiency, is not suitable for the polishing of supported at three point seat, because the thickness of supported at three point seat is thicker, it has not been convenient to use the polishing of supported at three point seat.
Table 2 carbon arc air gouging technological parameter
Preferably, the welding sequence in the 5th step is:
1) the supported at three point seat synchronous welding at 3 places on backing ring;
2) welded, by two welders, the supported at three point seat weld joint on inner side that the centrage lateral symmetry of each point is arranged simultaneously;
3) groove three inside welding supported at three point seat/for the moment, adopts carbon arc air gouging to carry out back chipping in outside;
4) the outer side weld of welding supported at three point seat;
5) when being welded to the half of the outer side weld of supported at three point seat, the deformation according to the supported at three point seat of monitoring, namely check the size of supported at three point seat, it is judged that be to continue with welding outside and still weld inner side;If supported at three point seat perpendicularity now for tilting laterally or during remaining unchanged, then continues to weld weld joint on inner side;If now supported at three point seat is for sloping inwardly, then continues to weld outer side weld, the deflection of tracking and monitoring supported at three point seat in welding process, adjust welding sequence in time according to the deformation data of monitoring.
Preferably, during welding, interlayer temperature controls at 150 DEG C~about 220 DEG C, welding slag between layers must be removed totally, and processing step is identical during every layer of welding, refer to the technological parameter of multiple tracks welding and above-mentioned welding, before being welded to supported at three point seat thickness half, the deflection of supported at three point seat is ceaselessly measured, to adjust welding sequence, eliminate the thermal stress produced in welding process, in welding process, if thermal stress does not eliminate, in use procedure meeting slow release out, this sampling device shortens service life, fault rate is high, need to stop work and again rest and reorganize, for avoiding this problem, need thermal stress to be eliminated when welding, with extension fixture service life.
Preferably, welding is taked 24 hours to work continuously in shifts, must not pause, and guarantee that whole weld seam is in keeping warm mode all the time before having welded.
Preferably, welding process finds have during the bad or defect of fusion must polish immediately that removing is further continued for welding after clean.
3. beneficial effect
Adopt technical scheme provided by the invention, compared with prior art, have the advantages that
(1) present invention utilizes 3 self-aligning spherical support installation auxiliary devices, adopt first polish axis hole, accurately control deflection by welding, the operation originally needing secondary operations and secondary assembling is reduced to and once completes, effectively reduce cost of manufacture and shorten manufacturing schedule;
(2) in welding process of the present invention need not handling main equipment, easy construction back and forth, manufacturing schedule is short, and cost of manufacture is low;
(3) present invention by controlling the deflection of 3 self-aligning spherical supports in welded and installed process, controls 3 self-aligning spherical supports in use, is unlikely to deform and tears, and does not often change, reduces production cost;
(4) dummy shaft pin of the present invention is equivalently-sized with d-axis, for fixed dimension, if size is not right, it is possible to destroys and takes out, readjusts size;Prevent supported at three point seat from deforming, the effect rigidly fixed, it is possible to do aperture amendment;After erecting and welding is good, indeformable unshift;
(5) present configuration is simple, it is easy to accomplish, construction procedure simplifies, the reduction of erection time.
Accompanying drawing explanation
Fig. 1 is the connecting device of converter trunnion ring and converter shell position view in converter;
Fig. 2 is supported at three point seat top view on backing ring;
Fig. 3 is the sectional view of converter trunnion ring and the connecting device of converter shell;
Fig. 4 is the front view of supported at three point seat;
The weld groove of Fig. 5 supported at three point seat.
Label declaration in schematic diagram:
1, supported at three point bolt;3, converter flange;4, backing ring;5, supported at three point seat;6, dummy shaft pin;11, nut;12, pad;13, upper ball ring;14, upper spheric seating;15, lower peripheral surface pad;16, lower peripheral surface seat;112, interim rigid support II.
Detailed description of the invention
For further appreciating that present disclosure, in conjunction with drawings and Examples, the present invention is described in detail.
Embodiment 1
In conjunction with Fig. 1-5, a kind of 3 self-aligning spherical support installation auxiliary devices, including supported at three point seat 5, dummy shaft pin 6 and interim rigid support II112, along 120 ° of backing ring 4 circumferencial direction interval, form 3 uniform points, these centrage both sides of 3 are respectively symmetrically and arrange a supported at three point seat 5, dummy shaft pin 6 inside the supported at three point seat 5 that the two is mutually symmetrical with between, outside at two mutually symmetrical with supported at three point seats 5, it is symmetrical arranged an interim rigid support II112 about centrage, one end of interim rigid support II112 is welded on backing ring 4, the other end is welded on the top of supported at three point seat 5 lateral surface.The both sides of supported at three point seat 5 are subject to the supporting role of interim rigid support II112, dummy shaft pin it is provided with to keep the installation dimension required between supported at three point seat 5, interim rigid support II112 and dummy shaft pin 6 one work, guarantee the axial of supported at three point seat 5 and backing ring 4 place plane keeping parallelism, the side making supported at three point seat 5 is all vertical with backing ring 4 place plane, make the distance between two supported at three point seat 5 inside upper part and bottom equal, prepare for installation and welding.
Dummy shaft pin 6 is equivalently-sized with d-axis, for fixed dimension, if size is not right, it is possible to destroys and takes out, readjusts size;Prevent supported at three point seat 5 from deforming, the effect rigidly fixed, it is possible to do aperture amendment;After erecting and welding is good, indeformable unshift.
3 self-aligning spherical supports include supported at three point seat 5, backing ring 4, converter flange 3, spherical pad and supported at three point bolt 1, supported at three point seat 5 is arranged on backing ring 4, supported at three point seat 5 top is provided with spherical pad, the axis direction of dummy shaft pin 6, supported at three point seat 5 axially and backing ring 4 place horizontal plane parallel to each other, be so present to ensure that the size qualification of supported at three point seat 5;The cross section of supported at three point seat 5 both sides is all vertical with backing ring 4 place plane.It it is so the size qualification in order to further ensure that supported at three point seat 5.Using d-axis to replace dummy shaft pin 6, supported at three point bolt 1 sequentially passes through converter flange 3 and spherical pad is arranged on d-axis, and wherein, d-axis is provided with the screw matched with supported at three point bolt 1.
The installation method of a kind of 3 self-aligning spherical supports, utilizes above-described a kind of 3 self-aligning spherical support installation auxiliary devices, the steps include:
Supported at three point seat 5 in above-described a kind of 3 the self-aligning spherical support installation auxiliary devices of A, fabrication and processing, interim rigid support II112, supported at three point bolt 1 and dummy shaft pin 6;Adopting the groove of edge planer machining supported at three point seat 5, groove type is U-shaped groove.
B, installing converter furnace shell and backing ring 4;
C, along 120 ° of backing ring 4 circumferencial direction interval, form 3 uniform points, backing ring 4 base plate found out this centrage of 3;
D, about this centrage lateral symmetry of 3, one supported at three point seat 5 is respectively installed;
E, dummy shaft pin 6 is arranged on supported at three point seat 5 axially;
The size of each supported at three point seat 5 on F, inspection backing ring 4, if size is errorless, takes out dummy shaft pin 6, uses d-axis to replace dummy shaft pin 6 to be arranged on supported at three point seat 5 axially;The pore size axially of supported at three point seat 5 and the external diameter of dummy shaft pin 6 match, and d-axis is identical with the external diameter of dummy shaft pin 6.
G, supported at three point bolt 1 is arranged on d-axis, spherical pad and pad 12 are arranged on supported at three point bolt 1, spherical pad includes ball ring 13, upper spheric seating 14, lower peripheral surface pad 15 and lower peripheral surface seat 16 from top to bottom successively, pad 12 is positioned on spherical pad, supported at three point bolt 1, through converter flange 3, arranges nut 11 on the top of supported at three point bolt 1;
H, all install after check again for supported at three point seat 5 size.
The welding method of a kind of 3 self-aligning spherical supports, the steps include:
The first step, a kind of 3 self-aligning spherical supports in accordance with the above installation method, after step E, the solid supported at three point seat 5 of point;
Second step, backing ring 4 have three-point mount supported at three point seat 5, an interim rigid support II112 is respectively welded for the outside of the supported at three point seat 5 of centrage lateral symmetry setting on each point;
After 3rd step, interim rigid support II112 have welded, the size of three pairs of supported at three point seats 5 on backing ring 4 base plate is checked, after qualified, carry out next step operation;
4th step, preheating, be laid on heating plate on the back side of backing ring 4 base plate and preheat;Being preheating to temperature is carry out welding sequence again after 150 DEG C~180 DEG C.
5th step, adopt edge planer machining supported at three point seat 5 groove, groove type is U-shaped groove, weld supported at three point seat 5;Welding method adopts SMAW, adopts SMAW welding condition to select such as table 1.
Table 1 welding condition
The material according to converter shell that selects of welding rod is determined, tensile strength, converter shell material is divided into: low-alloy steel, high-alloy steel and non-ferrous metal, so wlding selects standard to be that the converter shell for low-alloy steel material selects tensile strength equal with converter shell material;For the converter shell of high-alloy steel and non-ferrous metal material, select chemical composition equal with converter shell material.
Material is that 16MnR correspondence selects E5015 welding rod, and wlding has been both needed to quality certificate, and before weldering, welding rod uses Welding rod drying box to dry, and dries temperature 350~400 DEG C, is incubated 2 hours, and the welding rod being baked is placed in the heat-preservation cylinder of 100 DEG C, ready access upon use.The wlding of the converter shell of 16MnR and Q345 material selects identical.
Root adopts carbon arc air gouging to carry out back chipping, adoptsCarbon-point is removed, and technological parameter is shown in table 2 below, and angular grinding device is low due to grinding efficiency, is not suitable for the polishing of supported at three point seat, because the thickness of supported at three point seat is thicker, it has not been convenient to use the polishing of supported at three point seat.
Table 2 carbon arc air gouging technological parameter
Welding sequence is:
1) supported at three point seat 5 synchronous welding at 3 places on backing ring 4;
2) welded, by two welders, supported at three point seat 5 weld joint on inner side that the centrage lateral symmetry of each point is arranged simultaneously;
3) groove three inside welding supported at three point seat 5/for the moment, adopts carbon arc air gouging to carry out back chipping in outside;
4) the welding outer side weld of supported at three point seat 5;
5) deformation when being welded to the half of the outer side weld of supported at three point seat 5, according to the supported at three point seat 5 of monitoring, it is judged that be to continue with welding outside and still weld inner side;If supported at three point seat 5 perpendicularity now for tilting laterally or during remaining unchanged, then continues to weld weld joint on inner side;If now supported at three point seat 5 is for sloping inwardly, then continuing to weld outer side weld, the deflection of tracking and monitoring supported at three point seat 5 in welding process, the deformation data according to monitoring adjusts welding sequence in time.
During welding, interlayer temperature controls at 150 DEG C~220 DEG C, and welding slag between layers must be removed totally, and during every layer of welding, processing step is identical.Refer to the technological parameter of multiple tracks welding and above-mentioned welding, before being welded to supported at three point seat 5 thickness half, the deflection of supported at three point seat 5 ceaselessly be measured, to adjust welding sequence, eliminate the thermal stress produced in welding process.In welding process, if thermal stress does not eliminate, use procedure can slow release out, this sampling device shortens service life, and fault rate is high, it is necessary to stops work and again rests and reorganizes, for avoiding this problem, it is necessary to thermal stress eliminated when welding, with extension fixture service life.
Welding is taked 24 hours to work continuously in shifts, must not pause, and guarantee that whole weld seam is in keeping warm mode all the time before weld, finds to have must polish immediately during the bad or defect of fusion be further continued for welding after removing totally in welding process.
6th step, all weld seams should carry out stress relief annealing after being soldered immediately, are annealed according to the regulation of the post weld heat treatment in JB4709-2000 " GB150-1998 welding code ";Post weld heat treatment should meet the regulation of design document, and when no standard, the post weld heat treatment of pipeline should meet the pertinent regulations in national standard " Industrial Metal pipeline engineering job specfication " GB50235;The post weld heat treatment of equipment should meet the pertinent regulations of existing industry standard " pressure vessel welding code " JB/T4709.
Annealing temperature is with the 40 DEG C of slow intensifications that heat up per hour, it is heated to 580 DEG C and is incubated 5 hours, according still further to per hour 40 DEG C of slow coolings until being reduced to room temperature, method for annealing is crawler type electrical heating annealing, heating plate is respectively placed in the inner side of backing ring base plate, i.e. the back side of supported at three point seat weld seam, is covered on the weld seam of backing ring plate outer side supported at three point seat, the outside of heating plate heat-preservation cotton covers, in order to be incubated.
7th step, remove interim rigid support II112;
8th step, postwelding removing surface, postwelding is clean with electric angle grinder polishing by face of weld, crator, spatter thing, and undercut exceeds standard after locating repair welding and polishes;
Taking out dummy shaft after 9th step, weld seam detection are qualified and install actually used d-axis, check the overall dimensions of 3 self-aligning spherical supports, inspection method is also by measuring absolute altitude, the distance between inside supported at three point seat, size qualification, handing over after paint.
Embodiment 2
The present embodiment is with embodiment 1, wherein, utilizes 3 self-aligning spherical support installation auxiliary devices, adopt first polish axis hole, accurately control deflection by welding, the operation originally needing secondary operations and secondary assembling is reduced to and once completes, effectively reduce cost of manufacture and shorten manufacturing schedule.
3 self-aligning spherical support devices are that three support bearing pins being mutually 120 ° are connected on the supported at three point seat 5 on backing ring 4 top, arbitrarily can swing on bearing pin, its top is connected in the pin-and-hole of furnace shell flange by two pairs of spheric washers and with nut check, one group of four wave washer that height dimension is little, bearing capacity is big is had under locking nut (nut 11), against two pairs of spheres, carrying bolt can do any swing, shown in detailed structure view 1-3.
Adopting the groove of edge planer machining supported at three point seat, groove type is U-shaped groove, and it is 89mm that groove is of a size of inside depth, root face 2mm, root arc radius 5mm, bevel angle 30 °, and specifically in detail as shown in Figure 5, in figure, angle a is 30 °.Wherein, interim rigid support II112 is that 200mm channel-section steel makes, and after interim rigid support II112 installs and welds, the size of three pairs of supported at three point seats 5 on backing ring 4 base plate is checked again, can carry out next procedure after qualified.Welding sequence is carried out after being preheating to 150 DEG C during welding.Welding equipment is that SMAW adopts ZX7-400 welding machine, and gouge adopts ZD5-1000 Multifunctional arc welding commutator.
Wlding selects: material is that 16MnR correspondence selects E5015 welding rod, wlding has been both needed to quality certificate, before weldering, welding rod uses Welding rod drying box to dry, dry temperature 350~400 DEG C, being incubated 2 hours, the welding rod being baked is placed in the heat-preservation cylinder of 100 DEG C, ready access upon use, the welding rod made moist is forbidden to use, and welding rod technical conditions should meet the regulation (GB/T5117-1995) of existing national standards.Interlayer temperature controls at 150 DEG C, and welding slag between layers must be removed totally, and during every layer of welding, processing step is identical.Welding is taked 24 hours to work continuously in shifts, must not pause, and guarantee that whole weld seam is in keeping warm mode all the time before having welded.Welding process finds have must polish immediately during the bad or other defect of fusion removing clean after be further continued for welding.
Technology during welding requires:
(1) all weld seams must be welded by accredited welder.
(2), during welding, employing is symmetrically welded.
(3) inner side is first welded, at outside back chipping.The deflection of tracking and monitoring ear mount in welding process, adjusts welding sequence in time according to the deformation data of monitoring.
(4) interlayer temperature controls at 150 DEG C~about 220 DEG C, and welding slag between layers must be removed totally, and during every layer of welding, processing step is identical.
(5) welding is taked 24 hours to work continuously in shifts, must not pause, and guarantee that whole weld seam is in keeping warm mode all the time before having welded.Welding process finds have must polish immediately during the bad or other defect of fusion removing clean after be further continued for welding.
(6) welding should meet the regulation of JB/T5000.3-2007 " welding general technical specifications ", and size and angle grade are B level, and line position tolerance is F level, and weldquality evaluation rank is BK level.
Postwelding stress relief annealing, all weld seams should carry out stress relief annealing after being soldered immediately, and annealing temperature is as the criterion with Design Requirement Drawing, and method for annealing is electrical heating annealing.Postwelding removing surface, all temporary support of face of weld and peripheral region are removed by postwelding, and crator, spatter thing etc. is clean with electric angle grinder polishing, exceed standard after place gives repair welding for undercut and polish.Postwelding is checked, and is divided into visual examination and internal detection, and visual examination requires that face of weld is not allow for the existence of the weld defects such as crackle, overlap, pore, slag inclusion;Internal detection, it is qualified that ultrasonic examination check criteria should perform JB/T4730-2005, I level by drawing;Through actually detected after welding, 3 self-aligning spherical support d-axis are installed smoothly, and overall dimensions fully meets designing requirement.
In welding process need not handling main equipment, easy construction back and forth, manufacturing schedule is short, and cost of manufacture is low.By controlling the deflection of 3 self-aligning spherical supports in welded and installed process, control 3 self-aligning spherical supports in use, be unlikely to deform and tear, often do not change, reduce production cost, simple in construction, it is easy to accomplish, construction procedure simplifies, the reduction of erection time.
Schematically the present invention and embodiment thereof being described above, this description does not have restricted, and shown in accompanying drawing is also one of embodiments of the present invention, and actual structure is not limited thereto.So, if those of ordinary skill in the art is enlightened by it, when without departing from the invention objective, design the frame mode similar to this technical scheme and embodiment without creationary, protection scope of the present invention all should be belonged to.

Claims (5)

1. 3 self-aligning spherical support installation auxiliary devices, it is characterized in that, including supported at three point seat (5), dummy shaft pin (6) and interim rigid support II (112), along 120 ° of backing ring (4) circumferencial direction interval, form 3 uniform points, these centrage both sides of 3 are respectively symmetrically and arrange a supported at three point seat (5), dummy shaft pin (6) is positioned between supported at three point seat (5) inner side that the two is mutually symmetrical with, outside at two mutually symmetrical with supported at three point seats (5), it is symmetrical arranged an interim rigid support II (112) about centrage, one end of interim rigid support II (112) is welded on backing ring (4), the other end is welded on the top of supported at three point seat (5) lateral surface.
2. a kind of 3 self-aligning spherical support installation auxiliary devices according to claim 1, it is characterized in that, three-point support includes supported at three point seat (5), backing ring (4), converter flange (3), spherical pad and supported at three point bolt (1), supported at three point seat (5) is arranged on backing ring (4), supported at three point seat (5) top is provided with spherical pad, the axis direction of dummy shaft pin (6), supported at three point seat (5) axially and backing ring (4) place horizontal plane parallel to each other.
3. a kind of 3 self-aligning spherical support installation auxiliary devices according to claim 1, it is characterised in that the cross section of supported at three point seat (5) both sides is all vertical with backing ring (4) place plane.
4. a kind of 3 self-aligning spherical support installation auxiliary devices according to claim 2, it is characterized in that, d-axis is used to replace dummy shaft pin (6), supported at three point bolt (1) sequentially passes through converter flange (3) and spherical pad is arranged on d-axis, wherein, d-axis is provided with the screw matched with supported at three point bolt (1).
5. 3 self-aligning spherical support installation auxiliary devices of the one according to claim 3 or 4, it is characterized in that, the external diameter of the pore size axially of supported at three point seat (5) and dummy shaft pin (6) matches, and d-axis is identical with the external diameter of dummy shaft pin (6).
CN201620117548.9U 2016-02-03 2016-02-03 3 self -aligning spherical support installation auxiliary device Active CN205342318U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107538206A (en) * 2017-08-25 2018-01-05 中国核工业华兴建设有限公司 A kind of nuclear power station access lock final drive shaft installation method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107538206A (en) * 2017-08-25 2018-01-05 中国核工业华兴建设有限公司 A kind of nuclear power station access lock final drive shaft installation method
CN107538206B (en) * 2017-08-25 2019-11-05 中国核工业华兴建设有限公司 A kind of nuclear power station access lock main shaft installation method

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