CN202780282U - Preheating device used in segmented welding of large-pipe-diameter cast pipe mold - Google Patents
Preheating device used in segmented welding of large-pipe-diameter cast pipe mold Download PDFInfo
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- CN202780282U CN202780282U CN 201220453093 CN201220453093U CN202780282U CN 202780282 U CN202780282 U CN 202780282U CN 201220453093 CN201220453093 CN 201220453093 CN 201220453093 U CN201220453093 U CN 201220453093U CN 202780282 U CN202780282 U CN 202780282U
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- diameter pipeline
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Abstract
The utility model relates to the preheating of segmented welding of a large-pipe-diameter cast pipe mold, in particular to a preheating device used in segmented welding of the large-pipe-diameter cast pipe mold. The preheating device comprises five heaters, a horizontal supporting arm, a counterweight and a supporting seat, wherein the five heaters are fixedly arranged at one end of the horizontal supporting arm through heater fixing devices; the counterweight is arranged at the other end of the horizontal supporting arm; and the horizontal supporting arm is arranged on the supporting seat through a crossbeam fixing framework. Before the scheme is adopted, 20 bottles of oxygen gas and about 20 bottles of acetylene gas are used every day for baking the two sides of welding seams when the room temperature is 0 to 4 DEG in winter, so that the surrounding area is severely polluted; and because of uneven heating, the welding seams always have quality problems during use and need to be processed by shutting down a machine, and as the temperature of the welding seams is reduced, stress of the welding seams is increased.
Description
Technical field
The utility model relates to the preheating of Large Diameter Pipeline cast tube mould segmentation welding, is specifically related to a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding.
Background technology
In the production of Large Diameter Pipeline cast tube mould, the forging method that can be divided into solid forging and setting down, for setting down, after the roughing of back, need each section welded together, since the wall thickness of Large Diameter Pipeline cast tube mould mostly-more than the mm, before welding, need preheating is carried out at soldered body weld seam two ends.Pre-heating mean when the pipe welding of routine is to take outside be wrapped on the body or take hood configuration that the welding position cover is risen with heating wire, ribbon heater, or employing gas welding baking etc.Obviously the said method outside lead is more; the operation that impact is outside; meet when weldering and to go wrong to process the time; need open or remove heater; and interior heating of the present utility model to be body when Large Diameter Pipeline cast tube die welding connects rotate, heater cartridge is inner in body, can shut down at any time when the needs inspection with when processing the mass defect that occurs in the welding process; need not to adopt any action of opening or removing heater, can carry out.Simultaneously, because heat concentrates on body inside, homogeneous heating, energy consumption is lower, and weldering meets temperature even, has solved the deficiency that external heating mode carries out weld preheating.Simultaneously, owing to take interior heating to carry out preheating device and the method for Large Diameter Pipeline cast tube mould segmentation welding, can bring into play preferably the advantage of Large Diameter Pipeline cast tube mould setting down processing mode, as have to forging press tonnage demand lower, be convenient to make etc., guarantee welding quality.Because the press tonnage less of my company in process of production, adopts the forging method of setting down and takes interior heating to carry out preheating device and the method for Large Diameter Pipeline cast tube mould segmentation welding.Production is achieved.
The utility model content
The purpose of this utility model is customer service deficiency of the prior art and a kind of operating aspect is provided, and is simple in structure, without the preheating device that is used for Large Diameter Pipeline cast tube mould segmentation welding of leaky.
The purpose of this utility model is achieved in that
A kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding, comprise five heaters, horizontal support arms, counterweight, supporting seat, described five heaters are fixedly installed on horizontal support arms one end by the heater fixture, the described horizontal support arms other end is provided with counterweight, and horizontal support arms is arranged on the supporting seat by the crossbeam fixed frame.
Described heater fixture comprises five heater fixed heads and the hexagonal-shaped frame that is welded by six blocks of angle steel, one head and the tail, the mode that described five heaters all are bolted is connected with five heater fixed heads respectively, the mode that described five heater fixed heads all are bolted is connected with five frames of hexagonal-shaped frame respectively, described each hexagonal-shaped frame all is welded with two angle steel two between relative two frames up and down, between angle steel two corresponding to two hexagonal-shaped frame by three welding of four angle steel, be provided with bolt hole on described four angle steel three, described horizontal support arms connects by the bolt that passes bolt hole.
Described horizontal support arms adopts I-steel, is set with seal on the described horizontal support arms.
Described seal comprises two-layer partition steel plate layer, layer of insulation board, and described layer of insulation board is between two-layer partition steel plate layer, and is fastening by bolt one, nut one between described two-layer partition steel plate layer and the layer of insulation board.
Be set with insulating sleeve and pad on the described bolt one.
Be fixedly connected with by bolt two between described crossbeam fixed frame and the horizontal support arms.Described supporting seat comprises horizontal supporting plate, vertical lifting device, described vertical lifting device is made of screw rod, adjusting nut and sleeve, described sleeve vertically is fixedly installed on the horizontal supporting plate, described adjusting nut is arranged on the upper cartridge opening part, described screw rod one end is threaded with adjusting nut, and the other end is fixedly connected with the crossbeam fixed frame.
Described horizontal supporting plate bottom is provided with road wheel.
Be provided with the channel-section steel that prevents the horizontal support arm swing between described horizontal supporting plate and the horizontal support arms, be provided with puller bolt two at channel-section steel.
Heater adopts the frame-type heater, uses altogether five, every 10KW.Framework is welded into hexagon by angle steel, and heater is fixed on the framework that is welded by angle steel, and this framework is contained on the 14# steel I-beam with bolt.The other end of I-beam, counter weight device and counterweight are installed, the centre of I-beam is installed on a mobile device, establish adjusting nut in the mobile device, can make steel I-beam rising or decline and move left and right by adjusting, in order to adapt to the workpiece of different inner diameters, a dolly is designed in the mobile device bottom, be designed to the form of railcar, so that move and enter in orbit the inside of welded piece.
The power supply of heater, heater extend to the temperature lower by stainless first, connect by the power supply control cabinet of cable with the outside again.For guaranteeing that same order forges the requirement of temperature and the reliability of this heater, five groups of heaters take respectively automatic adjusting, manual switchover to wait until mode, guarantee therein one the road or several roads heater when breaking down, and can in time switch and drop into other heater.One infrared probe externally is installed, and infrared probe is sent to attemperating unit with the temperature of face of weld, by the size of attemperating unit according to the temperature control power output of setting.
For preventing out electric leakage, taked insulating means at I-steel.
Should check whether metal impurities are arranged on the heater, whether welding slag etc. is arranged on the heating tape before the welding.Whether the insulation of heater each several part meets the requirements.
According to pipe die one end of the required welding size apart from weld seam, adjust the size positions that horizontal support arms is passed from crossbeam fixed frame inside, and screw crossbeam fixed frame bolt, hold out against horizontal support arms.According to the centre-height of pipe die, the particular location at center, adjusting nut and the sleeve of adjustment vertical lifting device guarantee that the heater center height is consistent with the pipe die centre-height.Anti-deflection device is positioned over the horizontal support arms below.And the adjustment position, it is propped up horizontal support arms.Guarantee that the I-steel center is consistent with the center of pipe die.Along track heater is pushed pipe die inside after adjusting counterweight.Observe the gap length of heater and pipe die endoporus, should guarantee consistent.After heater stretches into workpiece, screw the bolt on the crossbeam fixed frame, hold out against horizontal support arms, prevent the horizontal support arms rotation.Screw bolt on the anti-deflection device, hold out against horizontal support arms, prevent the horizontal support arms rotation.
Infrared radiation thermometer is aimed at the weld seam middle part.
The insulation of the each several part of check circuit.According to the technological requirement of welding, select different heater quantity, and in record, mark the numbering of concrete heater, but so that rapid adjustment wiring when breaking down.
After the utility model adopts technique scheme, reach following technique effect:
Room temperature is in the time of 0--4 ℃ in the winter time, and the face of weld temperature can remain on 200 ℃, particularly is not more than 15 ℃ at expansion hydroformylation stage drop in temperature.Outside weld seam girth each point temperature difference is less than 20 ℃, and after one group of heater broke down, other each group heated easy switching.Owing to taked insulating means and the measure of ground connection connecting to neutral, do not found electric leakage.
Before adopting this programme, room temperature is in the time of 0--4 ℃ in the winter time, and being used for the used oxygen in baking weld seam both sides every day is 20 bottles, consumes about 20 bottles of acetylene gas, and periphery pollutes very serious.Because heating is inhomogeneous, weld seam needs to shut down and processes through the quality problems that occur commonly used, and weld seam temperature descends, and has aggravated again the stress of weld seam.
After using this programme, daily consumption electric energy 960KWH has eliminated pollution, and owing to homogeneous heating, weld seam is guaranteed through quality, when going wrong, does not need to stop heater, has guaranteed the quality of weld seam simultaneously.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is A-A structural representation among Fig. 1.
Fig. 3 is the structural representation of seal.
Fig. 4 is the test structure schematic diagram of seal.
Fig. 5 is heater fixture structure schematic diagram.
Fig. 6 is the side-looking structural representation of heater fixture.
Fig. 7 is the C-C cutaway view of Fig. 1.
Fig. 8 is the side-looking structural representation of channel-section steel.
The specific embodiment
Below in conjunction with specific embodiment, be further described of the present utility model.
Shown in Fig. 1,2,3,4,5,6,7,8, a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding, comprise five heaters 3, horizontal support arms 4, counterweight 9, supporting seat 8, described five heaters 3 are fixedly installed on horizontal support arms 4 one ends by heater fixture 2, described horizontal support arms 4 other ends are provided with counterweight 9, and horizontal support arms 4 is arranged on the supporting seat 8 by crossbeam fixed frame 6.
Described heater fixture 2 comprises five heater fixed heads 2.1 and two hexagonal-shaped frame 2.2 that are welded from beginning to end by six angle steel one 2.2.1, the mode that described five heaters 3 all are bolted is connected with five heater fixed heads 2.1 respectively, the mode that described five heater fixed heads 2.1 all are bolted is connected with five frames of one of them hexagonal-shaped frame 2.2 respectively, described each hexagonal-shaped frame 2.2 all is welded with up and down two angle steel two 2.2.2 between relative two frames, weld by four angle steel three 2.2.3 between angle steel two 2.2.2 of two hexagonal-shaped frame 2.2 correspondences, be provided with bolt hole 2.2.3.1 on described four angle steel three 2.2.3, described horizontal support arms 4 connects by the bolt 2.2.3.2 that passes bolt hole 2.2.3.1.The hexagonal-shaped frame that six roots of sensation angle steel is welded from beginning to end, the angle steel by two 40# connect with hexagonal up and down side weld respectively and form an integral body (outer one group of structure is the same with it).Again by perpendicular four blocks of angle steel (level), the hexagonal-shaped frame that is welded from beginning to end with other one group of six blocks of angle steel welds, and consists of whole heater shelf afterwards.
Described horizontal support arms 4 adopts I-steel, is set with seal 10 on the described horizontal support arms 4.Described seal 10 comprises two-layer partition steel plate layer 10.1, one deck layer of insulation board 10.2, described layer of insulation board 10.2 is between two-layer partition steel plate layer 10.1, and is fastening by bolt 1, nut 1 between described two-layer partition steel plate layer 10.1 and the layer of insulation board 10.2.Be set with insulating sleeve 10.5 and pad 10.6 on the described bolt 1.
In heater when work,, heat can outwards distribute by inner hole of workpiece, for guaranteeing the reliably working of seal, according to the length of institute's welding job, seal is designed the outside to workpiece.The position of the utility model design is 3 meters apart from the heater center position.Described seal comprises two-layer partition steel plate layer, one deck layer of insulation board.The two sides of seal welds together with horizontal support arms (I-steel) respectively, described layer of insulation board is between two-layer partition steel plate layer, the same position of layer of insulation board and two-layer partition steel plate layer, be processed with six the same holes of size, and add and be processed with in addition insulative pipe sleeve, pass this three ply board with insulative pipe sleeve when assembling, the two ends of seal are lined with insulating washer, afterwards by bolt, fastening nuts.
Described horizontal support arms 4 is passed crossbeam fixed frame 6, is provided with puller bolt 1 at crossbeam fixed frame 6.
Described supporting seat 8 comprises horizontal supporting plate 8.1, vertical lifting device 8.2, described vertical lifting device 8.2 is made of screw rod 8.2.1, adjusting nut 8.2.2 and sleeve 8.2.3, described sleeve 8.2.3 vertically is fixedly installed on the horizontal supporting plate 8.1, described adjusting nut 8.2.2 is arranged on sleeve 8.2.3 upper opening place, described screw rod 8.2.1 one end is threaded with adjusting nut 8.2.2, and the other end is fixedly connected with crossbeam fixed frame 6.
Described horizontal supporting plate 8.1 bottoms are provided with road wheel 8.1.1.
Be provided with the channel-section steel 11 that prevents that horizontal support arms 4 from swinging between described horizontal supporting plate 8.1 and the horizontal support arms 4, be provided with puller bolt 2 12 at channel-section steel 11.Channel-section steel 11 is H type structure, and an end is placed on the horizontal supporting plate, can support horizontal support arms by the middle part according to the length that horizontal support arms is stretched out, and guarantees the horizontal support arms level.Channel-section steel 11 two sides are processed with threaded through hole, after heater stretches into workpiece, screw in tapped through hole by bolt, hold out against horizontal support arms, prevent the horizontal support arms rotation.
Claims (9)
1. one kind is used for the preheating device that the segmentation of Large Diameter Pipeline cast tube mould is welded, it is characterized in that: comprise five heaters (3), horizontal support arms (4), counterweight (9), supporting seat (8), described five heaters (3) are fixedly installed on horizontal support arms (4) one ends by heater fixture (2), described horizontal support arms (4) other end is provided with counterweight (9), and horizontal support arms (4) is arranged on the supporting seat (8) by crossbeam fixed frame (6).
2. a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding according to claim 1, it is characterized in that: described heater fixture (2) comprises five heater fixed heads (2.1) and two hexagonal-shaped frame (2.2) that are welded by six blocks of angle steel one (2.2.1) head and the tail, the mode that described five heaters (3) all are bolted is connected with five heater fixed heads (2.1) respectively, the mode that described five heater fixed heads (2.1) all are bolted is connected with five frames of one of them hexagonal-shaped frame (2.2) respectively, described each hexagonal-shaped frame (2.2) all is welded with two angle steel two (2.2.2) between relative two frames up and down, weld by four angle steel three (2.2.3) between the angle steel two (2.2.2) of two hexagonal-shaped frame (2.2) correspondence, be provided with bolt hole (2.2.3.1) on described four angle steel three (2.2.3), described horizontal support arms (4) connects by the bolt (2.2.3.2) that passes bolt hole (2.2.3.1).
3. a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding according to claim 1, it is characterized in that: described horizontal support arms (4) adopts I-steel, is set with seal (10) on the described horizontal support arms (4).
4. a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding according to claim 3, it is characterized in that: described seal (10) comprises two-layer partition steel plate layer (10.1), one deck layer of insulation board (10.2), described layer of insulation board (10.2) is positioned between the two-layer partition steel plate layer (10.1), and is fastening by bolt one (10.3), nut one (10.4) between described two-layer partition steel plate layer (10.1) and the layer of insulation board (10.2).
5. a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding according to claim 4 is characterized in that: be set with insulating sleeve (10.5) and pad (10.6) on the described bolt one (10.3).
6. a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding according to claim 1, it is characterized in that: described horizontal support arms (4) is passed crossbeam fixed frame (6), is provided with puller bolt one (7) at crossbeam fixed frame (6).
7. a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding according to claim 1, it is characterized in that: described supporting seat (8) comprises horizontal supporting plate (8.1), vertical lifting device (8.2), described vertical lifting device (8.2) is by screw rod (8.2.1), adjusting nut (8.2.2) and sleeve (8.2.3) consist of, described sleeve (8.2.3) vertically is fixedly installed on the horizontal supporting plate (8.1), described adjusting nut (8.2.2) is arranged on sleeve (8.2.3) upper opening place, described screw rod (8.2.1) end is threaded with adjusting nut (8.2.2), and the other end is fixedly connected with crossbeam fixed frame (6).
8. a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding according to claim 7, it is characterized in that: described horizontal supporting plate (8.1) bottom is provided with road wheel (8.1.1).
9. a kind of preheating device for Large Diameter Pipeline cast tube mould segmentation welding according to claim 7, it is characterized in that: be provided with the channel-section steel (11) that prevents that horizontal support arms (4) from swinging between described horizontal supporting plate (8.1) and the horizontal support arms (4), be provided with puller bolt two (12) at channel-section steel (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220453093 CN202780282U (en) | 2012-09-07 | 2012-09-07 | Preheating device used in segmented welding of large-pipe-diameter cast pipe mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220453093 CN202780282U (en) | 2012-09-07 | 2012-09-07 | Preheating device used in segmented welding of large-pipe-diameter cast pipe mold |
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| Publication Number | Publication Date |
|---|---|
| CN202780282U true CN202780282U (en) | 2013-03-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220453093 Expired - Fee Related CN202780282U (en) | 2012-09-07 | 2012-09-07 | Preheating device used in segmented welding of large-pipe-diameter cast pipe mold |
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| CN (1) | CN202780282U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825402A (en) * | 2012-09-07 | 2012-12-19 | 中原特钢股份有限公司 | Preheating device for progressive welding of large-pipe-diameter casting pipe die |
| CN104476042A (en) * | 2014-11-04 | 2015-04-01 | 舟山长宏国际船舶修造有限公司 | Cylinder circular seam simply and automatically welding arm |
| CN105485685A (en) * | 2015-04-28 | 2016-04-13 | 无锡华光锅炉股份有限公司 | Reverse flame heating device |
| CN107214443A (en) * | 2017-06-13 | 2017-09-29 | 江苏政田重工股份有限公司 | A kind of arm is segmented welder |
-
2012
- 2012-09-07 CN CN 201220453093 patent/CN202780282U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102825402A (en) * | 2012-09-07 | 2012-12-19 | 中原特钢股份有限公司 | Preheating device for progressive welding of large-pipe-diameter casting pipe die |
| CN104476042A (en) * | 2014-11-04 | 2015-04-01 | 舟山长宏国际船舶修造有限公司 | Cylinder circular seam simply and automatically welding arm |
| CN105485685A (en) * | 2015-04-28 | 2016-04-13 | 无锡华光锅炉股份有限公司 | Reverse flame heating device |
| CN105485685B (en) * | 2015-04-28 | 2018-02-23 | 无锡华光锅炉股份有限公司 | A kind of reverse flame heating device |
| CN107214443A (en) * | 2017-06-13 | 2017-09-29 | 江苏政田重工股份有限公司 | A kind of arm is segmented welder |
| CN107214443B (en) * | 2017-06-13 | 2018-11-20 | 江苏政田重工股份有限公司 | A kind of boom segmented welding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130313 Termination date: 20170907 |