CN101713020B - Internal combustion segmental heat treatment method for pressure container - Google Patents
Internal combustion segmental heat treatment method for pressure container Download PDFInfo
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- CN101713020B CN101713020B CN2008101675028A CN200810167502A CN101713020B CN 101713020 B CN101713020 B CN 101713020B CN 2008101675028 A CN2008101675028 A CN 2008101675028A CN 200810167502 A CN200810167502 A CN 200810167502A CN 101713020 B CN101713020 B CN 101713020B
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- pressurized vessel
- large pressurized
- heat
- thermal treatment
- vessel section
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000002485 combustion reaction Methods 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 238000007669 thermal treatment Methods 0.000 claims description 36
- 238000009434 installation Methods 0.000 claims description 27
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 21
- 238000009413 insulation Methods 0.000 claims description 18
- 230000011218 segmentation Effects 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 7
- 238000009841 combustion method Methods 0.000 claims description 5
- 238000013519 translation Methods 0.000 claims description 4
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- 238000004321 preservation Methods 0.000 abstract description 2
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a segmental heat treatment method for a large-scale pressure container in the manufacturing and mounting field. The method comprises the following steps of: building a heat-treatment underground facility which is lower than the ground in a manufacturing shop for the large-scale pressure container, and mounting a burner used for heating in the heat-treatment underground facility; translating the large-scale pressure container segment to be subjected to heat treatment by a travelling crane in the manufacturing shop so as to vertically mount the large-scale pressure container segment on the heat-treatment underground facility; mounting a heat-insulating furnace shell for heat preservation on the periphery of the large-scale pressure container segment; mounting a temperature-uniformizing device at the top of the heat-insulating furnace shell; and heating the large-scale pressure container segment by the burner so as to realize heat treatment. The segmental heat treatment method solves the technical problem that the large-scale pressure container is susceptible to deformation during the heat treatment through the heat treatment of the vertical large-scale pressure container.
Description
Technical field
The present invention relates to the postweld heat treatment technology, particularly a kind of make, the erecting stage utilizes combustion method that large pressurized vessel is carried out the segmentation heat-treating methods.
Background technology
The pressurized vessel postweld heat treatment is the final stage critical process in pressurized vessel manufacturing, the installation process.The quality of postweld heat treatment directly has influence on the whole inner quality of pressurized vessel, and is different with weld defect, and postweld heat treatment can not be done over again, and thermal treatment length consuming time is expensive also big.The effect of postweld heat treatment is guaranteed by postweld heat treatment technology.Therefore loyal execution postweld heat treatment technology is to guarantee the key of postweld heat treatment effect, the thermal treatment temp homogeneity, and the reasonableness of soaking time, the temperature survey accuracy all is crucial.After finishing, its welding production often to carry out postweld heat treatment for large pressurized vessel (as the tower in oil, the chemical plant installations), the unrelieved stress that produces when its role is to eliminate assembling with welding, prevent to produce stress corrosion, improve the tissue and the performance of welding joint and heat affected zone, reach reduction hardness, improve plasticity and flexible purpose, further discharge the obnoxious flavour in the weld seam, prevent the generation of the hydrogen embrittlement and the crackle of weld seam, the geometrical dimension of stable container, the work-ing life of improving equipment.
Fig. 1 has shown a kind of traditional heat treating method, promptly small pressure container 1 is put into industrial furnace 10 and heat-treats, and utilizes electric heater or industrial burner to the thermal treatment of heating of the pressurized vessels 1 in the industrial furnace 10.
Along with oil, chemical plant installations to large scale development, the diameter of pressurized vessel oneself greater than 5m, length also surpasses 10m, as a 2000m
3The pressurized vessel diameter be greater than 5m, length is wanted tens of rice, this class tun is difficult in the factory all to be finished, because so huge pressurized vessel can't whole transport on railway, highway, even transport by sea route, short distance road transit from the harbour to the working-yard also is a difficult problem, and integral hoisting is extremely difficult especially.This class tun generally adopts in the workshop by prefabricated shaping of steel plate or segmentation manufacturing, assemble at the scene then, weld, so postwelding also must carry out at the scene to this operation of thermal treatment of pressurized vessel.Because the large pressurized vessel diameter after the welding is big, length is long, volume is big, therefore prior heat treatment method shown in Figure 1 can not be carried out complete heat treatment to this type of tun, can only carry out heat treatment in sections to it.
Owing to need send into each pressurized vessel section respectively in the industrial furnace shown in Figure 1 10 and heat-treat, its pressurized vessel section need be placed on the chassis, and the fire door that passes industrial furnace 10 sends in the industrial furnace 10, and its workload is very big.In addition, this heat treating method is the horizontal heat treating method of a kind of pressurized vessel, because the large pressurized vessel diameter is big, weight is big, the pressurized vessel of putting that therefore crouches is very easy to distortion in heat treatment process.
Summary of the invention
The purpose of this invention is to provide a kind of combustion method of utilizing large pressurized vessel is carried out on-the-spot segmentation heat-treating methods,, solve large pressurized vessel yielding problem in thermal treatment by the large pressurized vessel section of erectting is heat-treated.
According to a first aspect of the invention, provided by the invention make, the erecting stage utilizes combustion method that large pressurized vessel is carried out the segmentation heat-treating methods and may further comprise the steps:
At the scene of making, large pressurized vessel being installed, the large pressurized vessel section to be heated that directly will erect is made as burner hearth, comes heating large pressurized vessel section by thermal radiation, convection current, conduction, thereby realizes the thermal treatment to the large pressurized vessel section.
According to a second aspect of the invention, provided by the invention make, the erecting stage utilizes combustion method that large pressurized vessel is carried out the segmentation heat-treating methods and may further comprise the steps:
In the large pressurized vessel manufacturing shop, build the thermal treatment underground installation that is lower than ground, and the burner that is used to heat is installed in this underground installation;
Utilize the driving translation large pressurized vessel section to be heated of manufacturing, erecting stage, it is erected on the described thermal treatment underground installation;
The assembled insulation furnace shell that is used to be incubated is installed around described large pressurized vessel section;
Top at the insulation furnace shell installs temperature equalization system additional;
With described burner the large pressurized vessel section is heated, thereby realize thermal treatment.
Wherein said insulation furnace shell is the assembled insulation shell, surrounds described large pressurized vessel section by the mode that seals again after the assembling.
Wherein said thermal treatment underground installation comprises the pedestal of carrying large pressurized vessel section and forms the furnace bottom bottom of combustion chamber with the large pressurized vessel intersegmental part.
Wherein said furnace bottom bottom forms outer gland sealing with the bottom of large pressurized vessel section.
Wherein said pedestal is the notch cuttype pedestal with multistage step.
The shower nozzle of wherein said burner is aimed at the inner chamber of described large pressurized vessel section, and docks with the sealing of furnace bottom bottom.
Wherein said insulation furnace shell comprises the assembly parts that two or more link together.
The cross section of wherein said assembly parts is semicircle or circular arc or Polygons.
Wherein said temperature equalization system comprises be used to turn back the taper lid of combustion product gases and the chimney that is used to discharge fume.
Technique effect of the present invention is as described below:
1, the large pressurized vessel section of erectting is heat-treated, container wallboard vertical ground, a housing compression chord, deflection is minimum, thus the pressurized vessel deformation defect of having avoided horizontal thermal treatment to bring;
2, do not need to use large-scale crane that large pressurized vessel is risen to the thermal treatment place, thereby simplified heat treatment step;
But 3 assembleds insulation furnace shell can be realized Fast Installation;
4, the notch cuttype pedestal of thermal treatment underground installation can adapt to the large pressurized vessel of different diameter.
The present invention is described in detail below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the synoptic diagram that shows a kind of traditional treatment method that pressurized vessel is heat-treated;
Fig. 2 shows the synoptic diagram that large pressurized vessel is carried out the segmentation heat-treating methods in manufacturing, erecting stage of the present invention;
Fig. 3 is the vertical view of a kind of notch cuttype pedestal of the present invention;
Fig. 4 is the vertical view of another kind of notch cuttype pedestal of the present invention.
Embodiment
Fig. 2 show of the present invention make, the erecting stage carries out the segmentation heat-treating methods to large pressurized vessel.Because large pressurized vessel is bulky, so the common sectional construction large pressurized vessel in manufacturing shop, then each section of the pressurized vessel of sectional construction is transported to the scene.For convenience of explanation, the present invention is referred to as large pressurized vessel section 34 with the section of the large pressurized vessel of sectional construction.
As shown in Figure 2, of the present invention make, the erecting stage carries out the segmentation heat-treating methods to large pressurized vessel and may further comprise the steps:
Build the thermal treatment underground installation 32 that is lower than ground 31 in large pressurized vessel manufacturing, erecting stage, and this thermal treatment underground installation 32 in, install and be used to the burner 321 that burns and heat;
Utilize the driving translation large pressurized vessel section 34 to be heated of manufacturing, erecting stage, it is erected on the described thermal treatment underground installation 32;
The insulation furnace shell 33 that is used to be incubated is installed around described large pressurized vessel section 34;
Top at insulation furnace shell 33 installs temperature equalization system 35 additional;
With the heating of burning of 321 pairs of large pressurized vessel sections 34 of described burner, thereby realize thermal treatment.
Owing to be subjected to the workshop limitation in height, can not utilize large-scale crane to move large pressurized vessel section 34, the present invention has designed the thermal treatment underground installation 32 that is lower than ground 31 for this reason, so just can utilize the driving in workshop to come translation large pressurized vessel section 34, thereby be implemented in the workshop thermal treatment, just only need move to large pressurized vessel section to be heated on the thermal treatment underground installation 32 and just can heat-treat large pressurized vessel.In addition, can also on this thermal treatment underground installation 32, be equipped with an electronic lid, so as at the thermal treatment bonnet on thermal treatment underground installation 32, form the part of mill floor.
It is an important feature of the present invention that large pressurized vessel is erected on the thermal treatment underground installation 32, and this can heat-treat large pressurized vessel section on end, thereby can avoid large pressurized vessel to be out of shape because of thermal treatment.
For the ease of insulation furnace shell 33 is installed around large pressurized vessel section 34, the present invention will be incubated furnace shell 33 and be designed to the assembled heat-preservation cylinder, its diameter is greater than the diameter of large pressurized vessel section 34, this insulation furnace shell 33 by reasonable assembling after again the mode of sealing surround described large pressurized vessel section 34, thereby realize Fast Installation.
This insulation furnace shell 33 can comprise the assembly parts that two or more link together.The cross section of these assembly parts can be semicircle or circular arc or Polygons.If insulation furnace shell 33 has two assembly parts that link together, then these two assembly parts are semicircular housings.
Thermal treatment underground installation 32 can comprise carrying large pressurized vessel section 34 pedestal 322 and with the large pressurized vessel section 34 inner furnace bottom bottoms 323 that form combustion chambers.As shown in Figure 2, furnace bottom bottom 323 can be fire-resistant, resistant to elevated temperatures plate washer, and its central authorities have the through hole that can dock burner tip 324.
Multistage step is set on pedestal 322, and pedestal 322 is that the notch cuttype pedestal with multistage step is another characteristics of the present invention in other words.The pedestal of this multipole step can be placed the large pressurized vessel of different diameter, thereby can heat-treat the large pressurized vessel of different diameter.On the other hand, the underground installation of notch cuttype is convenient to also that operator operate, maintenance service in the thermal treatment underground installation.
Fig. 3 has shown the shape of a kind of notch cuttype pedestal 322 of the present invention, as we can see from the figure this notch cuttype pedestal 322 notch cuttype pedestal that is a kind of annulars.
Fig. 4 has shown the shape of another kind of notch cuttype pedestal 322 of the present invention, and this notch cuttype pedestal 322 is a kind of actinomorphic notch cuttype pedestals as we can see from the figure.
Because large pressurized vessel section 34 to be heated is a cylinder normally, does not descend manhole, therefore can not realize that burner 321 docks with the direct of large pressurized vessel section 34.The furnace bottom bottom 323 of thermal treatment underground installation 32 of the present invention forms outer gland sealing with the bottom of large pressurized vessel section 34, the integral body that can realize large pressurized vessel section 34 bottoms and furnace bottom bottom 323 is like this docked, because the nozzle 324 of the shower nozzle of burner 321 is aimed at the inner chamber of described large pressurized vessel section 34, and 323 sealings are docked bottom described furnace bottom.Burning gas can rise from the furnace bottom bottom like this, and the flue gas of bright heat has been full of the inside of pressurized vessel, the heated pressure container.Therefore the present invention has directly butt joint large pressurized vessel section 34 of burner 321, the technique effect of the heating of burning, pressurization.
The present invention has following technique effect:
1, the large pressurized vessel section of erectting is carried out postweld heat treatment, container wallboard vertical ground, a housing compression chord, deflection is minimum, thus the pressurized vessel deformation defect of having avoided horizontal thermal treatment to bring;
2, do not need to use large-scale crane that large pressurized vessel is risen to the thermal treatment place, thereby simplified heat treatment step;
3, fabricated insulation furnace shell can be realized Fast Installation;
4, the notch cuttype pedestal of thermal treatment underground installation can adapt to the large pressurized vessel of different diameter.
Although above the present invention is had been described in detail, the invention is not restricted to this, those skilled in the art of the present technique can carry out various modifications according to principle of the present invention.Therefore, all modifications of doing according to the principle of the invention all should be understood to fall into protection scope of the present invention.
Claims (10)
- One kind make, the erecting stage utilizes combustion method to large pressurized vessel segmentation heat-treating methods, may further comprise the steps:Build the thermal treatment underground installation (32) that is lower than ground (31) in large pressurized vessel manufacturing, erecting stage, and this thermal treatment underground installation (32) in, install and be used to the burner (321) that burns and heat;Utilize the driving translation large pressurized vessel section (34) to be heated of manufacturing shop, it is erected on the described thermal treatment underground installation (32);The insulation furnace shell (33) that is used to be incubated is installed around described large pressurized vessel section (34);Top at insulation furnace shell (33) installs temperature equalization system (35) additional;With described burner (321) to large pressurized vessel section (34) heating of burning, thereby realize thermal treatment.
- 2. method according to claim 1, wherein said insulation furnace shell (33) is the assembled insulation shell, and surrounds described large pressurized vessel section (34) by the mode that seals again after the assembling.
- 3. method according to claim 1 and 2, wherein said thermal treatment underground installation (32) comprise the pedestal (322) of carrying large pressurized vessel section (34) and with the inner furnace bottom bottom (323) that forms the combustion chamber of large pressurized vessel section (34).
- 4. method according to claim 3, wherein said furnace bottom bottom (323) externally forms sealing with the bottom of large pressurized vessel section (34).
- 5. method according to claim 3, wherein said pedestal (322) are the notch cuttype pedestals with multistage step.
- 6. method according to claim 3, the nozzle (324) of wherein said burner (321) is aimed at the inner chamber of described large pressurized vessel section (34), and docks with described furnace bottom bottom (323) sealing.
- 7. method according to claim 2, wherein said insulation furnace shell (33) comprises plural assembly parts, described plural assembly parts link together.
- 8. method according to claim 7, the cross section of wherein said assembly parts are circular arc or Polygons.
- 9. method according to claim 7, the cross section of wherein said assembly parts are semicircle.
- 10. method according to claim 1, wherein said temperature equalization system (35) comprise and are used to reflect the taper lid (351) of combustion product gases and the chimney (352) that is used to discharge fume.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101675028A CN101713020B (en) | 2008-10-08 | 2008-10-08 | Internal combustion segmental heat treatment method for pressure container |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101675028A CN101713020B (en) | 2008-10-08 | 2008-10-08 | Internal combustion segmental heat treatment method for pressure container |
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| Publication Number | Publication Date |
|---|---|
| CN101713020A CN101713020A (en) | 2010-05-26 |
| CN101713020B true CN101713020B (en) | 2011-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101675028A Expired - Fee Related CN101713020B (en) | 2008-10-08 | 2008-10-08 | Internal combustion segmental heat treatment method for pressure container |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105441646B (en) * | 2015-11-11 | 2017-11-28 | 北京首钢股份有限公司 | Annealing device and method for mammoth conveter steel plate furnace shell |
| CN109897947B (en) * | 2018-06-05 | 2020-11-06 | 武汉重工铸锻有限责任公司 | Heat treatment method of vertical pressure kettle for deep sea simulation pressure test cylinder |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567907A (en) * | 1968-04-30 | 1971-03-02 | Babcock & Wilcox Co | Apparatus for heat treating a pressure vessel |
| CN1483841A (en) * | 2003-07-28 | 2004-03-24 | 傅家仁 | Integval heat treatment method for large horizontal pressure container |
-
2008
- 2008-10-08 CN CN2008101675028A patent/CN101713020B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3567907A (en) * | 1968-04-30 | 1971-03-02 | Babcock & Wilcox Co | Apparatus for heat treating a pressure vessel |
| CN1483841A (en) * | 2003-07-28 | 2004-03-24 | 傅家仁 | Integval heat treatment method for large horizontal pressure container |
Non-Patent Citations (1)
| Title |
|---|
| 广野安生.直立式压力容器现场整体退火实例.《锅炉技术》.1987,(第10期),20-23. * |
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| Publication number | Publication date |
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| CN101713020A (en) | 2010-05-26 |
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Granted publication date: 20110831 Termination date: 20171008 |