CN102962611B - Heating device for dynamic welding of large-size thick-wall workpiece - Google Patents
Heating device for dynamic welding of large-size thick-wall workpiece Download PDFInfo
- Publication number
- CN102962611B CN102962611B CN201210465663.1A CN201210465663A CN102962611B CN 102962611 B CN102962611 B CN 102962611B CN 201210465663 A CN201210465663 A CN 201210465663A CN 102962611 B CN102962611 B CN 102962611B
- Authority
- CN
- China
- Prior art keywords
- cavity
- wall workpiece
- heat
- burner
- heating device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a heating device for dynamic welding of a large-size thick-wall workpiece. The heating device comprises a heating stove. A cylindrical cavity with an open upper end is arranged in the heating stove. A side wall heat preserving layer and a bottom heat preserving layer are installed in the cavity. A plurality of burners are installed on the upper end surface of the bottom heat preserving layer. The burners are evenly distributed in the cavity along the tangent to periphery. A burner outlet is arranged on each burner. The burner outlets are distributed clockwise or anticlockwise along the tangent to periphery. By installing the burners in the cavity of the heating stove, after the large-size thick-wall workpiece is installed in the heating stove, the burners are started, heat emitted from the burner outlets circulates along the circumferential direction under the propulsion of high-speed air flow, is fully mixed and goes up along the cavity, the air flow with the heat is in full contact with the large-size thick-wall workpiece and heats the large-size thick-wall workpiece and the surface temperature of the large-size thick-wall workpiece is evenly increased. The heating device is suitable for heating various large-size thick-wall workpieces.
Description
Technical field
The present invention relates to a kind of heater in welding processing research field, particularly relate to the dynamic weld heating device of a kind of large thick-wall workpiece.
Background technology
At workpiece inner wall resurfacing welding material, especially during dissimilar metal built-up welding, as at workpiece inner wall built-up welding anti-corrosion layer material, need workpiece heat to predetermined temperature range, just can built-up welding be carried out, but, in order to ensure surfacing layer quality, in whole weld deposit process, the temperature of work all needs to remain in this interval.Wherein, for thickness between 160mm ~ 230mm scope, the large thick-wall workpiece of spherical radius R2500mm, existing heater or method are difficult to for a long time this workpiece be remained on narrower temperature range.
The technical scheme of existing heating large heavy wall workpiece generally adopts direct mode of heating, is namely in a row evenly arranged multiple torch at the outer wall of large thick-wall workpiece, after torch is lighted, directly heats large thick-wall workpiece.There is following shortcoming in this mode of heating: 1) single torch is heated to be fixed point heating, and local easily occurs overheated scene, and temperature homogeneity is poor; 2) during heating, flame exposes, and weld job environment is poor, and there is potential safety hazard; 3) during single torch heating, temperature regulates the mode that can only adopt each flared gases output flow of manual adjustment, and difficulty is very big, and temperature control precision is poor.
Also has a kind of technical scheme of heating large heavy wall workpiece, by Electric heating to large thick-wall workpiece heat, its concrete mode of heating is as follows: install the calandria close or similar to outer wall shape in large thick-wall workpiece outer wall, after energising, heater is started working, and is delivered on large thick-wall workpiece by heat.There is following shortcoming in this mode of heating: 1) heater needs to fit with large thick-wall workpiece, and the uniformity in laminating gap between the two directly affects heating effect; 2) relative position of large thick-wall workpiece and heater is fixed, and thermal evenness controlling is poor; 3) easily there is the situations such as short circuit and cause large thick-wall workpiece to be difficult to entirety remaining on required temperature range in the heater of regional area; 4) output voltage during heating is 220V, and it exists potential safety hazard.
Summary of the invention
Object of the present invention, is to provide a kind of large thick-wall workpiece dynamic weld heating device.
The solution that the present invention solves its technical problem is: the dynamic weld heating device of a kind of large thick-wall workpiece, it comprises heating furnace, the columned cavity that a upper end is uncovered is provided with in described heating furnace, the madial wall of described cavity is provided with sidewall heat-insulation layer, the interior diapire of cavity is also provided with bottom heat-insulation layer, the upper surface of bottom heat-insulation layer is provided with some burners, described burner circumferentially tangential direction is evenly arranged in cavity, each burner is equipped with a burner outlet, described burner outlet all circumferentially tangent line distributes or all circumferentially tangent line distributes counterclockwise clockwise.
As the further improvement of technique scheme, the below of described heating furnace is also provided with positioner, heating furnace is arranged on the workbench of positioner, and heating furnace and positioner junction arrange the joint of stepless rotation, and described joint is communicated with the fuel inlet of burner by pipeline.
As the further improvement of technique scheme, the upper surface of described heating furnace is also furnished with several adjustable bracing frames, and support frame as described above distributes along the even circumferential of the opening end of cavity.
As the further improvement of technique scheme, the quantity of support frame as described above is 8.
As the further improvement of technique scheme, described bottom heat-insulation layer is high-temperature fibre heat-preservation cotton layer, and described sidewall heat-insulation layer is high-temperature fibre heat-preservation cotton layer.
As the further improvement of technique scheme, the quantity of described burner is 2.
The invention has the beneficial effects as follows: the present invention by installing several burners in the cavity of heating furnace, after large thick-wall trade union college is on heating furnace, start burner, heat along the circumferential direction circulation under the promotion of high velocity air of gushing out from burner outlet is risen along cavity after also fully mixing, fully to contact with large thick-wall workpiece with the air-flow of heat and it is heated, make large thick-wall workpiece surface temperature even, bottom heat-insulation layer in heating furnace and sidewall heat-insulation layer mainly play insulation effect, prevent heat from leaking.
The present invention is applicable to various adding of large thick-wall workpiece and hankers.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and example, the present invention is further illustrated.
Fig. 1 is sectional view of the present invention;
Fig. 2 is the structural representation of the present invention when working;
Fig. 3 is the top view of the heating furnace in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, describe the application of the present invention in heating large heavy wall workpiece in detail.
With reference to Fig. 1 ~ Fig. 3, the dynamic weld heating device of a kind of large thick-wall workpiece, it comprises heating furnace 2, the columned cavity that a upper end is uncovered is provided with in described heating furnace 2, the madial wall of cavity is provided with sidewall heat-insulation layer 6, the interior diapire of cavity is also provided with bottom heat-insulation layer 7, sidewall heat-insulation layer 6 and bottom heat-insulation layer 7 are fixed by screws in cavity, the upper surface of bottom heat-insulation layer 7 is provided with some burners 3, described burner 3 circumferentially tangential direction is evenly arranged in cavity, each burner 3 is equipped with a burner outlet 5, described burner outlet 5 all circumferentially tangent line distributes or all circumferentially tangent line distributes counterclockwise clockwise, in the present invention, this burner 3 is preferably integration high speed burner, its main fuel is natural gas, also temperature inductor is installed in this burner 3, Automatic-heating regulating system and humidity control system etc., can ensure in heating process, burner 3 can regulate automatically.
By installing several burners 3 in the cavity of heating furnace 2, after large thick-wall trade union college is on heating furnace 2, start burner 3, heat along the circumferential direction circulation under the promotion of high velocity air of gushing out from burner outlet 5 is risen along cavity after also fully mixing, fully to contact with large thick-wall workpiece with the air-flow of heat and it is heated, make large thick-wall workpiece surface temperature even, be convenient to the carrying out of follow-up welding sequence, bottom heat-insulation layer 7 in heating furnace 2 and sidewall heat-insulation layer 6 mainly play insulation effect, prevent heat from leaking.
Be further used as preferred embodiment, the below of described heating furnace 2 is also provided with positioner 1, and heating furnace 2 is arranged on the workbench of positioner 1.The workbench of positioner 1 can along the central shaft 360 ° rotation of workbench, and this workbench can 180 ° of upsets on positioner 1.Owing to being rise from the bottom up with the air-flow of heat, therefore the lowermost end of large thick-wall workpiece first touches this air-flow and preferential heating, cause the temperature of this position higher than other positions of large thick-wall workpiece, in order to ensure the uniformity of the temperature of large thick-wall workpiece, heating furnace 2 is arranged on the workbench of positioner 1, during heating, start positioner 1, make heating furnace 2 along with the working table movement of positioner 1, the each position of large thick-wall workpiece is fully contacted with the air-flow of heat, thus make large thick-wall workpiece surface temperature even, be convenient to the carrying out of follow-up welding sequence.Certainly, can normally work to realize burner 3 in continuous rotation, arrange the joint of stepless rotation in positioner 1 and heating furnace 2 junction, described joint is communicated with by the fuel inlet of pipeline with burner 3, and this joint can ensure the regular supply of the natural gas of burner 3.
Be further used as preferred embodiment, the upper surface of described heating furnace 2 is also furnished with several adjustable bracing frames 4, and support frame as described above 4 distributes along the even circumferential of the opening end of cavity, and bracing frame 4 plays fixing large thick-wall workpiece.
Be further used as preferred embodiment, the quantity of support frame as described above 4 is 8, dividing equally the pressure of large thick-wall workpiece to heating furnace 2, also playing the effect being convenient to fixing large thick-wall workpiece by arranging multiple bracing frame 4.
Be further used as preferred embodiment, described bottom heat-insulation layer 7 is high-temperature fibre heat-preservation cotton layer, described sidewall heat-insulation layer 6 is high-temperature fibre heat-preservation cotton layer, high-temperature fibre heat-preservation cotton layer is formed by high-temperature fibre heat-preservation cotton compressor units Synthetic block, and it can not be able to come off under the washing away of high velocity air.
Be further used as preferred embodiment, the quantity of described burner 3 is 2.
More than that better embodiment of the present invention is illustrated, but the invention is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent modifications or replacement under the prerequisite without prejudice to spirit of the present invention, and these equivalent modification or replacement are all included in the application's claim limited range.
Claims (6)
1. the dynamic weld heating device of large thick-wall workpiece, it comprises heating furnace (2), the columned cavity that a upper end is uncovered is provided with in described heating furnace (2), the madial wall of cavity is provided with sidewall heat-insulation layer (6), the interior diapire of cavity is also provided with bottom heat-insulation layer (7), the upper surface of bottom heat-insulation layer (7) is provided with some burners (3), it is characterized in that: described burner (3) circumferentially tangential direction is evenly arranged in cavity, each burner (3) is equipped with a burner outlet (5), described burner outlet (5) all circumferentially tangent line distributes or all circumferentially tangent line distributes counterclockwise clockwise, heat along the circumferential direction circulation under the promotion of high velocity air of gushing out from burner outlet (5) is risen along cavity after also fully mixing, fully to contact with large thick-wall workpiece with the air-flow of heat and it is heated.
2. the dynamic weld heating device of large thick-wall workpiece according to claim 1, it is characterized in that: the below of described heating furnace (2) is also provided with positioner (1), heating furnace (2) is arranged on the workbench of positioner (1), heating furnace (2) and positioner (1) junction arrange the joint of stepless rotation, and described joint is communicated with by the fuel inlet of pipeline with burner (3).
3. the dynamic weld heating device of large thick-wall workpiece according to claim 1 and 2, it is characterized in that: the upper surface of described heating furnace (2) is also furnished with several adjustable bracing frames (4), and support frame as described above (4) distributes along the even circumferential of the opening end of cavity.
4. the dynamic weld heating device of large thick-wall workpiece according to claim 3, is characterized in that: the quantity of support frame as described above (4) is 8.
5. the dynamic weld heating device of large thick-wall workpiece according to claim 1 and 2, is characterized in that: described bottom heat-insulation layer (7) is high-temperature fibre heat-preservation cotton layer, and described sidewall heat-insulation layer (6) is high-temperature fibre heat-preservation cotton layer.
6. the dynamic weld heating device of large thick-wall workpiece according to claim 1 and 2, is characterized in that: the quantity of described burner (3) is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210465663.1A CN102962611B (en) | 2012-11-16 | 2012-11-16 | Heating device for dynamic welding of large-size thick-wall workpiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210465663.1A CN102962611B (en) | 2012-11-16 | 2012-11-16 | Heating device for dynamic welding of large-size thick-wall workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102962611A CN102962611A (en) | 2013-03-13 |
| CN102962611B true CN102962611B (en) | 2015-05-27 |
Family
ID=47793201
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210465663.1A Active CN102962611B (en) | 2012-11-16 | 2012-11-16 | Heating device for dynamic welding of large-size thick-wall workpiece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102962611B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103978470B (en) * | 2014-05-22 | 2016-08-24 | 无锡华联科技集团有限公司 | Multi-angle positioner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3622135A (en) * | 1968-10-03 | 1971-11-23 | Degussa | Vacuum oven for evenly heating workpieces |
| ES378573A1 (en) * | 1969-04-17 | 1972-06-16 | Ipsen Ind International G M B | Improvements in or relating to furnaces |
| CN201235452Y (en) * | 2008-07-30 | 2009-05-13 | 江门市博盈焊接工程有限公司 | Soldering maintaining furnace for soldering heavy sectional steel component |
| CN202015907U (en) * | 2011-04-08 | 2011-10-26 | 中建工业设备安装有限公司 | Preheating and post-heating device for welding of large-caliber thick wall steel tubes |
| CN102615465A (en) * | 2012-04-10 | 2012-08-01 | 开封空分集团有限公司 | Welding positioner with heating temperature control device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55128544A (en) * | 1979-03-28 | 1980-10-04 | Daido Steel Co Ltd | Continuous heat treatment furnace |
| CN201255569Y (en) * | 2008-07-30 | 2009-06-10 | 江门市博盈焊接工程有限公司 | Heating-furnace for welding heacy section component |
-
2012
- 2012-11-16 CN CN201210465663.1A patent/CN102962611B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3622135A (en) * | 1968-10-03 | 1971-11-23 | Degussa | Vacuum oven for evenly heating workpieces |
| ES378573A1 (en) * | 1969-04-17 | 1972-06-16 | Ipsen Ind International G M B | Improvements in or relating to furnaces |
| CN201235452Y (en) * | 2008-07-30 | 2009-05-13 | 江门市博盈焊接工程有限公司 | Soldering maintaining furnace for soldering heavy sectional steel component |
| CN202015907U (en) * | 2011-04-08 | 2011-10-26 | 中建工业设备安装有限公司 | Preheating and post-heating device for welding of large-caliber thick wall steel tubes |
| CN102615465A (en) * | 2012-04-10 | 2012-08-01 | 开封空分集团有限公司 | Welding positioner with heating temperature control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102962611A (en) | 2013-03-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA2677975C (en) | Burner arrangement | |
| CN105258504A (en) | Tunnel kiln and combustion control method thereof | |
| CN102962611B (en) | Heating device for dynamic welding of large-size thick-wall workpiece | |
| CN207515503U (en) | Rotary kiln and calciner | |
| CN104315515B (en) | Pure premixed gas fuel burner with double-layer porous foamed ceramic plate | |
| CN113511817A (en) | Float glass surface coating device and using method | |
| CN204372922U (en) | Duct products external heating device | |
| CN202367364U (en) | Flame heating device for end socket surfacing | |
| CN202107744U (en) | Annealing furnace band steel cooling device | |
| CN203571740U (en) | High-speed burner with automatic ignition and flame detection device | |
| CN201269528Y (en) | Heater of bell type annealing furnace | |
| CN201069315Y (en) | A heating device for overlaying welding of roller axis | |
| CN105423537A (en) | Heating device with hot water storing tank and control method thereof | |
| CN103146896B (en) | Induction quenching apparatus used for concave spherical surface of scraper knife connecting seat | |
| CN207043740U (en) | Voltage regulation batch meter machining production line | |
| CN101688665A (en) | Burner apparatus | |
| CN202377699U (en) | Multi-torch pipe crater preheating device | |
| CN207108811U (en) | A kind of automatic glass lathe | |
| CN207814736U (en) | A kind of fine chemistry industry feeding pipe that can be temperature automatically controlled | |
| CN202116853U (en) | Double-area gas penetration hot air box | |
| CN206300485U (en) | Automatically weigh and high-efficiency heating lead melting furnace | |
| CN205575934U (en) | Hot compensation arrangement of cotton centrifuge of glass | |
| CN202599123U (en) | Structure shared by gas delivery and steel structure support for industrial furnace | |
| CN205241740U (en) | Cast chain slat type quenched -tempered production line | |
| CN205718448U (en) | A kind of efficient heating stove |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |