CN103911494B - A kind of bearing device postweld heat treatment flame shunting device - Google Patents
A kind of bearing device postweld heat treatment flame shunting device Download PDFInfo
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- CN103911494B CN103911494B CN201410155642.9A CN201410155642A CN103911494B CN 103911494 B CN103911494 B CN 103911494B CN 201410155642 A CN201410155642 A CN 201410155642A CN 103911494 B CN103911494 B CN 103911494B
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- fluid dividing
- dividing cover
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Abstract
The invention discloses a kind of bearing device postweld heat treatment flame shunting device, comprise fluid dividing cover and support, fluid dividing cover is the thin plate of falling regular conical of cone angle 120 °, and fluid dividing cover thin plate outer surface processes two groups of helical grooves, symmetrical structure centered by two groups of helical grooves; Support comprises 3 vertical support bar and annular base, and vertical support bar one end is connected with the fluid dividing cover of falling normal cone, and the other end is connected with horizontal circle annular base, and 3 vertical support bar are uniformly distributed; Annular base is provided with open holes.This device reasonably controls air current flow direction, change flame profile, form Catherine's colyliform flame, offset flat shape combustion gas flowing can not only heat balls pot bottom surrounding ball wall, can also rise along ball wall from bottom to top, thus change the heat treated heating condition of spherical tank, reduce the temperature head of spherical tank in heat treatment process between each position, improve the temperature homogeneity of spherical tank, improve thermal effectiveness.
Description
Technical field
The invention belongs to bearing device postweld heat treatment field, be specially adapted to the postweld heat treatment field of especially big spherical storage tank, tower body.
Background technology
The steel storage vessel (as spherical tank, tower body etc.) of pressure-bearing is widely used in the departments such as oil, chemical industry, metallurgy, the storage vessel of liquefied petroleum gas (LPG), natural gas liquids, liquid oxygen, liquefied ammonia, liquid nitrogen and other media can be used as, also can be used as the container of chemical reaction.
China manufactures bearing device and starts from early 1960s.But along with the high speed development of national economy and the needs of reform and opening-up, the manufacturing technology of spherical tank obtains develop rapidly in recent years.The domestic spherical tank multiple stage cover independently manufacturing or introduced different size and purposes at present, its maximum volume is more than 10000 cubic metres, and peak pressure is more than 3MPa, and minimum design temperature is below-30 DEG C.
Spherical storage tank POST WELD HEAT TREATMENT OF ENTIRE is an important step during spherical tank manufactures, and can eliminate welding residual stress, improves weld properties and use properties.Current spherical storage tank POST WELD HEAT TREATMENT OF ENTIRE adopts fuel oil directly to burn method usually, the method is using the spherical tank of required process itself as burner hearth, the burner with high-velocity nozzle installed at lower manhole place is utilized to be lighted by liquid fuel compression atomizing, atomization light after fuel vertically upwards burning form the column of flame, and spherical tank to be heated.This heat treating method is applicable to the less spherical storage tank POST WELD HEAT TREATMENT OF ENTIRE of volume, but to macrotype spherical storage tank, there is the shortcoming that spherical tank case temperature difference is larger.
Summary of the invention
The object of the invention is the deficiency existed in large-size spherical tank POST WELD HEAT TREATMENT OF ENTIRE process for existing fuel oil method of directly burning, a kind of bearing device postweld heat treatment flame shunting device is provided, this device reasonably controls air current flow direction, change flame profile, form Catherine's colyliform flame, offset flat shape combustion gas flowing can not only heat balls pot bottom surrounding ball wall, can also rise along ball wall from bottom to top, thus change the heat treated heating condition of spherical tank, reduce the temperature head of spherical tank in heat treatment process between each position, improve the temperature homogeneity of spherical tank, improve thermal effectiveness.
The object of the invention is to be achieved through the following technical solutions, a kind of bearing device postweld heat treatment flame shunting device, comprise fluid dividing cover and support, fluid dividing cover is the thin plate of falling regular conical of cone angle 120 °, fluid dividing cover outside surface processes two groups of helical grooves, symmetrical structure centered by two groups of helical grooves, and helical groove width is 20-40mm, the helical groove degree of depth is 10-20mm, and helical groove pitch is 40-60mm; Support comprises 3 vertical support bar and annular base, and vertical support bar one end is connected with the fluid dividing cover of falling normal cone, and the other end is connected with horizontal circle annular base, and 3 vertical support bar are uniformly distributed; Annular base is provided with open holes.
Further, described helical groove width is 30mm, and the degree of depth is 15mm, and pitch is 50mm.
Further, described fluid dividing cover and support are stainless steel structure.
Further, described fluid dividing cover sheet gauge is 25mm.
Compared with prior art, the present invention has following beneficial effect:
The first, when air-flow arrives fluid dividing cover surface, under the effect of fluid dividing cover groove, outside rotary expansion, and rise gradually, form spirrillum Catherine colyliform flame, and spherical tank is heated, realize POST WELD HEAT TREATMENT OF ENTIRE SPHERICAL TANK;
The second, due to the effect of fluid dividing cover, the column that flame directly burns method by fuel oil changes into Catherine's colyliform flame.Compared to columnar flame, Catherine's colyliform flame gas flowing direction is more reasonable, and the temperature head in POST WELD HEAT TREATMENT OF ENTIRE SPHERICAL TANK process between each position reduces, and temperature homogeneity improves; For the spherical tank of a constant volume, under identical thermal treatment process, directly burn method compared to fuel oil, adopt fluid dividing cover device, temperature head is less, and temperature homogeneity is better;
3rd, flame shunting device is arranged on burner high-velocity nozzle place, and after installing flame shunting device, air-flow, under fluid dividing cover effect, to surrounding rotational flow, forms Catherine's colyliform flame.Fluid dividing cover changes the shape of flame and the flow direction of hot gas, and offset flat shape combustion gas flowing can not only heat balls pot bottom surrounding ball wall, can also rise from bottom to top, reduce spherical tank temperature head, improve homogeneous temperature and thermal effectiveness along ball wall.
Accompanying drawing explanation
Fig. 1 is the entirety assembling schematic diagram of bearing device postweld heat treatment flame shunting device of the present invention;
Fig. 2 is the structural representation of bearing device postweld heat treatment flame shunting device of the present invention;
Fig. 3 is the structural representation of the thread-like groove of bearing device postweld heat treatment flame shunting device of the present invention;
Fig. 4 is the sectional structure schematic diagram of the fluid dividing cover of bearing device postweld heat treatment flame shunting device of the present invention;
Fig. 5 is the plan structure schematic diagram of the fluid dividing cover of bearing device postweld heat treatment flame shunting device of the present invention;
In figure: 1 flame shunting device, 2 high-velocity nozzles, 3 burners, 4 fluid dividing covers, 5 supports, 6 mounting-positioning holes.
Embodiment
Below in conjunction with the embodiment of example, the invention will be further described.
As Figure 1-5, a kind of bearing device postweld heat treatment flame shunting device, comprises fluid dividing cover 4 and support 5.
Fluid dividing cover 4 is the thin plate of falling regular conical.Fluid dividing cover cone angle is 120 °.The fluid dividing cover of falling regular conical outer side processes two groups of helical grooves, symmetrical structure centered by two groups of helical grooves, and recess width is 20-40mm, and the degree of depth is 10-20mm, and pitch is 40-60mm.Helical groove preferable width is 30mm, and the degree of depth is 15mm, and pitch is 50mm.When air-flow arrives fluid dividing cover surface, under the effect of fluid dividing cover groove, outside rotary expansion, and rise gradually, form spirrillum Catherine colyliform flame.
Support comprises 3 vertical support bar and annular base.Vertical support bar one end is connected with the fluid dividing cover of falling normal cone 4, and the other end is connected with horizontal circle annular base.3 vertical support bar are uniformly distributed.
Annular base is provided with the mounting-positioning holes 6 be fixed on by flame shunting device on the high-velocity nozzle 2 of burner 3.
Fluid dividing cover and support are stainless steel structure.
Fluid dividing cover sheet gauge is 25mm.
The using method of bearing device postweld heat treatment flame shunting device: fluid dividing cover 4 is connected with the high-velocity nozzle 2 of burner 3 by support 5.Fluid dividing cover 4 is positioned at above high-velocity nozzle 2.
The present invention is a kind of stainless steel flame shunting thin-plate devices, is made up of fluid dividing cover and support.Fluid dividing cover is tapered, is fixed on directly over burner high-velocity nozzle by support.Pedestal upper end is connected with fluid dividing cover, and lower end is fixed on outside burner nozzle.
Oil inflame test is carried out to the burner installing and do not install flame shunting device:
Fuel oil directly burns in method spherical storage tank POST WELD HEAT TREATMENT OF ENTIRE process, and flame is column, expands straight up.
After installing flame shunting device 1, air-flow, under fluid dividing cover effect, to surrounding rotational flow, forms Catherine's colyliform flame.Fluid dividing cover 4 changes the shape of flame and the flow direction of hot gas, and offset flat shape combustion gas flowing can not only heat balls pot bottom surrounding ball wall, can also rise from bottom to top, reduce spherical tank temperature head, improve homogeneous temperature and thermal effectiveness along ball wall.
When air-flow arrives fluid dividing cover surface, under the effect of fluid dividing cover groove, outside rotary expansion, and rise gradually, form spirrillum Catherine colyliform flame, and spherical tank is heated, realize POST WELD HEAT TREATMENT OF ENTIRE SPHERICAL TANK.
Due to the effect of fluid dividing cover, the column that flame directly burns method by fuel oil changes into Catherine's colyliform flame.Compared to columnar flame, Catherine's colyliform flame gas flowing direction is more reasonable, and the temperature head in POST WELD HEAT TREATMENT OF ENTIRE SPHERICAL TANK process between each position reduces, and temperature homogeneity improves; For the spherical tank of a constant volume, under identical thermal treatment process, directly burn method compared to fuel oil, adopt fluid dividing cover device, temperature head is less, and temperature homogeneity is better.
Flame shunting device is arranged on burner high-velocity nozzle place, and after installing flame shunting device, air-flow, under fluid dividing cover effect, to surrounding rotational flow, forms Catherine's colyliform flame.Fluid dividing cover changes the shape of flame and the flow direction of hot gas, and offset flat shape combustion gas flowing can not only heat balls pot bottom surrounding ball wall, can also rise from bottom to top, reduce spherical tank temperature head, improve homogeneous temperature and thermal effectiveness along ball wall.
Claims (4)
1. a bearing device postweld heat treatment flame shunting device, comprise fluid dividing cover, it is characterized in that, be provided with support, described fluid dividing cover is the thin plate of falling regular conical of cone angle 120 °, and fluid dividing cover outside surface processes two groups of helical grooves, symmetrical structure centered by two groups of helical grooves, helical groove width is 20-40mm, and the helical groove degree of depth is 10-20mm, and helical groove pitch is 40-60mm; Described support comprises 3 vertical support bar and annular base, and vertical support bar one end is connected with the fluid dividing cover of falling normal cone, and the other end is connected with horizontal circle annular base, and 3 vertical support bar are uniformly distributed; Annular base is provided with mounting-positioning holes.
2. bearing device postweld heat treatment flame shunting device according to claim 1, it is characterized in that, described helical groove width is 30mm, and the degree of depth is 15mm, and pitch is 50mm.
3. bearing device postweld heat treatment flame shunting device according to claim 1, it is characterized in that, described fluid dividing cover and support are stainless steel structure.
4. bearing device postweld heat treatment flame shunting device according to claim 1, it is characterized in that, described fluid dividing cover sheet gauge is 25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155642.9A CN103911494B (en) | 2014-04-18 | 2014-04-18 | A kind of bearing device postweld heat treatment flame shunting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410155642.9A CN103911494B (en) | 2014-04-18 | 2014-04-18 | A kind of bearing device postweld heat treatment flame shunting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103911494A CN103911494A (en) | 2014-07-09 |
| CN103911494B true CN103911494B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410155642.9A Expired - Fee Related CN103911494B (en) | 2014-04-18 | 2014-04-18 | A kind of bearing device postweld heat treatment flame shunting device |
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Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1058754C (en) * | 1997-08-01 | 2000-11-22 | 傅家仁 | Heat treating apparatus for ensembled large size spherical tank |
| CN100441705C (en) * | 2007-02-09 | 2008-12-10 | 武汉一冶钢结构有限责任公司 | Heat-treatment method for storage tank body of large-scale total pressure type LPG carrying vessel |
| CN201737978U (en) * | 2010-06-22 | 2011-02-09 | 中国化学工程第七建设有限公司 | Integral heat treatment device of spherical tank |
| CN203147837U (en) * | 2013-03-27 | 2013-08-21 | 青岛埃维燃气平度有限公司 | Fuel gas flow-guide heating device |
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2014
- 2014-04-18 CN CN201410155642.9A patent/CN103911494B/en not_active Expired - Fee Related
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| CN103911494A (en) | 2014-07-09 |
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Granted publication date: 20150819 Termination date: 20180418 |