CN103128420B - Construction technology of embedded reinforcing structure for large-orifice pipe of container - Google Patents
Construction technology of embedded reinforcing structure for large-orifice pipe of container Download PDFInfo
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- CN103128420B CN103128420B CN201310061360.8A CN201310061360A CN103128420B CN 103128420 B CN103128420 B CN 103128420B CN 201310061360 A CN201310061360 A CN 201310061360A CN 103128420 B CN103128420 B CN 103128420B
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 31
- 238000005516 engineering process Methods 0.000 title claims abstract description 16
- 238000010276 construction Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 30
- 238000003466 welding Methods 0.000 claims abstract description 29
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 230000002787 reinforcement Effects 0.000 claims description 12
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 6
- 241000700608 Sagitta Species 0.000 claims description 3
- 238000005728 strengthening Methods 0.000 claims description 3
- 238000007670 refining Methods 0.000 abstract description 5
- 238000003908 quality control method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000003208 petroleum Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The invention relates to a construction technology of an embedded reinforcing structure for a large-orifice pipe of a container. Application of the construction technology is limited due to the fact that conventional manufacturing and heating processing, welding quality control, heat treatment equipment and warping preventing process of the embedded reinforcing structure used in refining reactors or reproducers are complicated. The construction technology includes the steps of determining blanking length of an embedded reinforcing plates and a parent plate; arranging and disposing the embedded reinforcing plate and the parent plate; arranging and disposing the embedded reinforcing plate and the parent plate; welding divided parts of the embedded reinforcing plate, welding a pipe into an orifice of the embedded reinforcing plate for the pipe, and finally performing bulk heat treatment for a reinforcing plate assembly by means of furnace heat treatment. An arc plate is fixedly welded horizontally on the inner side of the embedded reinforcing plate to prevent radian changes thereof, steel tubes longitudinally penetrate through the divided plates along an axial line to prevent the embedded reinforcing plate from deforming axially. By improving quality of thick plate welding and controlling of deformation of the thick plate, assembling and heat treatment tooling is optimized, the deformation after the embedded reinforcing plate assembly welding and heat treatment is controlled within an allowable range of design, and manufacturing quality of the embedded reinforcing structure is guaranteed.
Description
Technical field
the present invention relates to the embedding reinforced structure of the housings such as a kind of petroleum chemical industry oil refining apparatus reactor, regenerator, large-scale storage tank, be specifically related to the embedded reinforced structure construction technology of a kind of container large opening.
Background technology
Embed reinforced structure at petroleum chemical industry oil refining apparatus reactor, be widely used in the main equipments such as regenerator, tradition reinforced structure is at oil refining apparatus reactor, in the use of regenerator, because stiffening plate and housing are two-layer, stress easily causes large opening position lining crackle, device is caused to be forced to stop production under serious conditions, reactor regenerator large opening lining is caused to ftracture for improving stress, current design inclination embeds reinforced structure in employing, but owing to embedding reinforcement thickness of slab, manufacture and Technology for Heating Processing complexity, welding quality controls, heat treatment tooling and prevent deformation technique complicated, therefore to be actually subject to certain restrictions.
Summary of the invention
The object of this invention is to provide a kind of effective raising welding quality and by Deformation control in allowed band the embedded reinforced structure construction technology of container large opening.
The technical solution adopted in the present invention is:
The embedded reinforced structure construction technology of container large opening, is characterized in that:
Step one: determine the cutting length embedding stiffening plate, cylindrical shell parent plate:
(1) stiffening plate cutting length S1=(2 π R1 is embedded
in/ 360) * α
Wherein, R1
infor embedding the central diameter of reinforcement, α is the central angle angle embedding stiffening plate;
(2) parent plate cutting length S2=(2 π R2
in/ 360) * (360-α)
Wherein, R2
infor the central diameter of parent plate, α is the central angle angle embedding stiffening plate;
Step 2: the typesetting and the process that embed stiffening plate:
(1) the upper and lower circumferential weld of embedding stiffening plate is made to overlap with the circumferential weld of cylindrical shell parent plate, the nozzle opening center embedding stiffening plate should meet the requirement of design minimum dimension to embedding stiffening plate four limit size, the surrounding embedding stiffening plate should reserve suitable manufacture surplus, and 100mm is all strengthened in its four limits;
(2) longitudinal joint embedding the band plate up and down of stiffening plate staggers mutually, and adjacent longitudinal joint spacing is greater than 3 times of thicknesss of slab, and is not less than 100mm, forbids to form " ten " word weld seam between longitudinal joint and circumferential weld;
(3), when the embedding stiffening plate of different thickness of slab forms weld seam, be that benchmark carries out skiving process to slab connection edge with thin plate;
Step 3: embed the welding between stiffening plate burst:
(1) take electrical heating to carry out welding preheating and after heat, preheat temperature is 80-120 DEG C, and postheat temperature is 200-350 DEG C;
(2) embed stiffening plate according to first self splicing short seam, the order of rear slit welds, and takes multi-layer multi-pass welding in welding;
Step 4: carry out the assembly welding taken over:
(1) adapter is welded to nozzle opening place embedding stiffening plate;
(2) adapter place is by tube diameter decile, arranges transversely strengthening arc plate in Along ent position, and arc plate is reinforced in adapter place need embed nozzle interior, and stretches out the outer 100mm of adapter, reinforces between arc plate longitudinally by Φ 273*15mm spool support in adapter;
Step 5: heat treatment and anti-deformation tool:
(1) change of stiffening plate radian is embedded for preventing, reinforcement of weld transverse arc plate inside embedding stiffening plate; Being out of shape along its axis direction for preventing embedding stiffening plate, between reinforcing transverse arc plate, running through steel pipe along stiffening plate axis;
(2) heat treatment mode in stove is adopted to carry out bulk heat treatmet to stiffening plate sub-assembly.
In step 2 (3), when connecting to slab the skiving process carried out at edge, make slab connect edge and form the inclined-plane of thickness-tapered, when thickness of slab difference is greater than 5mm, it is poor that the length of skiving process is greater than the thickness of slab of 3 times.
In step 5 (1), for preventing embedding stiffening plate radian change reinforcement of weld transverse arc plate inside embedding stiffening plate, require to reinforce transverse arc plate radian consistent with radian inside embedding stiffening plate, thickness is 30mm, length long 100mm more each than the embedding every side of stiffening plate, width adds 500mm for embedding stiffening plate sagitta, and longitudinal pitch is 600-800mm; The reinforcing transverse arc plate of upper and lower both sides is not more than 100mm with the spacing embedding the upper and lower port of stiffening plate;
Embedding stiffening plate and reinforcing between transverse arc plate takes two-sided staggered intermittent to weld, weldering 100mm interval 100mm, leg height 20-35mm.
In step 5 (1), being out of shape along its axis direction for preventing embedding stiffening plate, between reinforcing transverse arc plate, running through steel pipe along stiffening plate axis, namely add three roads at embedding position, upper, middle and lower, stiffening plate inner arc side and rigidly fix steel pipe;
Steel pipe specification is Φ 273*15mm, steel pipe spacing 800mm, and steel pipe center is 200-350 millimeter to reinforcing transverse arc plate straight flange distance;
Be welded as one side full weld between steel pipe and reinforcing transverse arc plate, leg height is the minimum wall thickness (MINI W.) of steel pipe and gusset plate.
In step 5 (2), heat treatment temperature 620 ± 20 DEG C, constant temperature time 2.5h;
Programming rate: be less than 200 DEG C and do not limit, is greater than 200 DEG C of programming rates and remains between 55-90 DEG C/h, and temperature needs constant temperature 0.75 hour 200 DEG C time; Be greater than 200 DEG C when intensification is in, when being less than 300 DEG C of scopes, programming rate should be controlled at 70 DEG C/below h as far as possible;
Cooling rate: when being greater than 300 DEG C, cooling rate remains between 55-116 DEG C/h; Less than 300 DEG C cool with stove; Less than 50 DEG C can cool naturally in blow-on, and lifting is subsequently come out of the stove.
The present invention has the following advantages:
The present invention is by selecting suitable assembly method, strengthen the control of thick plates quality and distortion, optimize assembling and heat treatment tooling, make the Deformation control after embedding stiffening plate assembly welding and heat treatment in design allowed band, ensure that the workmanship embedding reinforced structure.
Accompanying drawing explanation
Fig. 1 contrasts schematic diagram for embedding reinforced structure with common reinforced structure.Wherein, cylinder internal diameter is R
inthe central diameter (radius) embedding stiffening plate is R1
in, the central diameter (radius) of parent plate is R2
in, the angle embedding stiffening plate is α °.
Fig. 2 is for embedding reinforced structure schematic diagram.
Fig. 3 is simple embedding reinforced structure typesetting figure.Wherein, dash area is for embedding stiffening plate, and all the other are thick parent plate.
Fig. 4 is more complicated embedding reinforced structure typesetting figure.Wherein, dash area is for embedding stiffening plate, and all the other are parent plate.
Fig. 5 is for embedding the different thickness of slab junction chamfered edge process schematic diagram of stiffening plate.
Fig. 6 is for embedding stiffening plate consolidation process schematic diagram.
Fig. 7 is A-A sectional view in Fig. 6.
Fig. 8 places schematic diagram for embedding in reinforced structure integrated heat treatment furnace.
Fig. 9 is A-A sectional view in Fig. 8.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention will be described in detail.
The embedded reinforced structure construction technology of container large opening involved in the present invention, the large opening being applicable to the housings such as petroleum chemical industry oil refining apparatus reactor, regenerator, large-scale storage tank embeds the manufacture etc. of reinforced structure.Specifically comprise the following steps:
Step one: determine the cutting length embedding stiffening plate, cylindrical shell parent plate:
(1) stiffening plate cutting length S1=(2 π R1 is embedded
in/ 360) * α
Wherein, R1
infor embedding the central diameter of reinforcement, α is the central angle angle embedding stiffening plate;
(2) parent plate cutting length S2=(2 π R2
in/ 360) * (360-α)
Wherein, R2
infor the central diameter of parent plate, α is the central angle angle embedding stiffening plate.
As shown in Figure 2, if when flushing inside cylindrical shell, R1
infor embedding the central diameter of reinforcement, R2
infor the central diameter of parent plate, α is the central angle angle embedding stiffening plate, R
infor cylinder internal diameter.
Step 2: the typesetting and the process that embed stiffening plate:
(1) the upper and lower circumferential weld of embedding stiffening plate is made to overlap with the circumferential weld of cylindrical shell parent plate, the nozzle opening center embedding stiffening plate should meet the requirement of design minimum dimension to embedding stiffening plate four limit size, the size of embedding stiffening plate during manufacture typesetting must not be less than designing requirement, the surrounding embedding stiffening plate should reserve suitable manufacture surplus, and 100mm is all strengthened in its four limits;
(2) longitudinal joint embedding the band plate up and down of stiffening plate staggers mutually, and adjacent longitudinal joint spacing is greater than 3 times of thicknesss of slab, and is not less than 100mm, forbids to form " ten " word weld seam between longitudinal joint and circumferential weld;
(3), when the embedding stiffening plate of different thickness of slab forms weld seam, be that benchmark carries out skiving process to slab connection edge with thin plate.
Step 3: embed the welding between stiffening plate burst:
(1) take electrical heating to carry out welding preheating and after heat, preheat temperature is 80-120 DEG C, and postheat temperature is 200-350 DEG C;
(2) embed stiffening plate according to first self splicing short seam, the order of rear slit welds, and takes multi-layer multi-pass welding in welding.
Step 4: carry out the assembly welding taken over:
(1) adapter is welded to nozzle opening place embedding stiffening plate;
(2) adapter place is by tube diameter decile, arranges transversely strengthening arc plate in Along ent position, and arc plate is reinforced in adapter place need embed nozzle interior, and stretches out the outer 100mm of adapter, reinforces between arc plate longitudinally by Φ 273*15mm spool support in adapter.
Step 5: heat treatment and anti-deformation tool:
(1) change of stiffening plate radian is embedded for preventing, reinforcement of weld transverse arc plate inside embedding stiffening plate; Being out of shape along its axis direction for preventing embedding stiffening plate, between reinforcing transverse arc plate, running through steel pipe along stiffening plate axis;
(2) embedding stiffening plate and nozzle assembling are after entirety, for eliminating stiffening plate manufacture and welding stress, prevent stiffening plate Stress Release from producing additional force and distortion to parent plate, heat treatment mode in stove is adopted to carry out bulk heat treatmet to stiffening plate sub-assembly, embedding stiffening plate heat treatment adopts heat treatment mode in stove to carry out, and takes burning diesel oil to heat.
Be below that each step details illustrates:
(1) in step 2 (3), when connecting to slab the skiving process carried out at edge, make slab connect edge and form the inclined-plane of thickness-tapered, when thickness of slab difference is greater than 5mm, it is poor that the length of skiving process is greater than the thickness of slab of 3 times.Parent plate is comparatively large due to Wall-Thickness Difference with embedding stiffening plate, should consider the difference of different thickness of slab during typesetting core material, embeds stiffening plate and should carry out wall thickness process respectively according to wall thickness different separately from parent plate.
(2) owing to embedding reinforcement thickness of slab and be low-alloy steel, welding process need carry out the measure preventing crackle and welding deformation.In step 5 (1), for preventing embedding stiffening plate radian change reinforcement of weld transverse arc plate inside embedding stiffening plate, require to reinforce transverse arc plate radian consistent with radian inside embedding stiffening plate, thickness is 30mm, length long 100mm more each than the embedding every side of stiffening plate, width adds 500mm for embedding stiffening plate sagitta, and longitudinal pitch is 600-800mm; The reinforcing transverse arc plate of upper and lower both sides is not more than 100mm with the spacing embedding the upper and lower port of stiffening plate.
Embedding stiffening plate and reinforcing between transverse arc plate takes two-sided staggered intermittent to weld, weldering 100mm interval 100mm, leg height 20-35mm.
(3), in step 5 (1), being out of shape along its axis direction for preventing embedding stiffening plate, between reinforcing transverse arc plate, running through steel pipe along stiffening plate axis, namely add three roads at embedding position, upper, middle and lower, stiffening plate inner arc side and rigidly fix steel pipe.
Steel pipe specification is Φ 273*15mm, steel pipe spacing 800mm, and steel pipe center is 200-350 millimeter to reinforcing transverse arc plate straight flange distance.
Be welded as one side full weld between steel pipe and reinforcing transverse arc plate, leg height is the minimum wall thickness (MINI W.) of steel pipe and gusset plate.
(4) in step 5 (2), heat treatment temperature 620 ± 20 DEG C, constant temperature time 2.5h;
Programming rate: be less than 200 DEG C and do not limit, is greater than 200 DEG C of programming rates and remains between 55-90 DEG C/h, and temperature needs constant temperature 0.75 hour 200 DEG C time; Be greater than 200 DEG C when intensification is in, when being less than 300 DEG C of scopes, programming rate should be controlled at 70 DEG C/below h as far as possible;
Cooling rate: when being greater than 300 DEG C, cooling rate remains between 55-116 DEG C/h; Less than 300 DEG C cool with stove; Less than 50 DEG C can cool naturally in blow-on, and lifting is subsequently come out of the stove.
When embedding stiffening plate manufacture and heat treatment typesetting, need consider to manufacture and allowance, carry out typesetting in strict accordance with actual minimum dimension.
Material and equipment:
Processing points for attention:
When embedding stiffening plate chamfered edge process, during skiving in strict accordance with the requirement orientation of typesetting figure, distinguish inside and outside after carry out skiving process, otherwise easily cause and cut mistake and cause and do over again.
Need carry out the control measure of welding deformation when embedding stiffening plate assembling, strict control embeds stiffening plate geometric shape size, needs to carry out preheating and after heat, prevent weld crack and welding deformation in welding process.
Embed stiffening plate heat treatment tooling to reinforce in strict accordance with this technique, need after entering heat-treatment furnace to prevent from steadily supporting firmly, to operate in strict accordance with heat treatment cycle curve during heat treatment.
Content of the present invention is not limited to cited by embodiment, and the conversion of those of ordinary skill in the art by reading description of the present invention to any equivalence that technical solution of the present invention is taked, is claim of the present invention and contains.
Claims (5)
1. the embedded reinforced structure construction technology of container large opening, is characterized in that:
Step one: determine the cutting length embedding stiffening plate, cylindrical shell parent plate:
(1) stiffening plate cutting length S1=(2 π R1 is embedded
in/ 360) * α
Wherein, R1
infor embedding the central diameter of reinforcement, α is the central angle angle embedding stiffening plate;
(2) parent plate cutting length S2=(2 π R2
in/ 360) * (360-α)
Wherein, R2
infor the central diameter of parent plate, α is the central angle angle embedding stiffening plate;
Step 2: the typesetting and the process that embed stiffening plate:
(1) the upper and lower circumferential weld of embedding stiffening plate is made to overlap with the circumferential weld of cylindrical shell parent plate, the nozzle opening center embedding stiffening plate should meet the requirement of design minimum dimension to embedding stiffening plate four limit size, the surrounding embedding stiffening plate should reserve suitable manufacture surplus, and 100mm is all strengthened in its four limits;
(2) longitudinal joint embedding the band plate up and down of stiffening plate staggers mutually, and adjacent longitudinal joint spacing is greater than 3 times of thicknesss of slab, and is not less than 100mm, forbids to form " ten " word weld seam between longitudinal joint and circumferential weld;
(3), when the embedding stiffening plate of different thickness of slab forms weld seam, be that benchmark carries out skiving process to slab connection edge with thin plate;
Step 3: embed the welding between stiffening plate burst:
(1) take electrical heating to carry out welding preheating and after heat, preheat temperature is 80-120 DEG C, and postheat temperature is 200-350 DEG C;
(2) embed stiffening plate according to first self splicing short seam, the order of rear slit welds, and takes multi-layer multi-pass welding in welding;
Step 4: carry out the assembly welding taken over:
(1) adapter is welded to nozzle opening place embedding stiffening plate;
(2) adapter place is by tube diameter decile, arranges transversely strengthening arc plate in Along ent position, and arc plate is reinforced in adapter place need embed nozzle interior, and stretches out the outer 100mm of adapter, reinforces between arc plate longitudinally by Φ 273*15mm spool support in adapter;
Step 5: heat treatment and anti-deformation tool:
(1) change of stiffening plate radian is embedded for preventing, reinforcement of weld transverse arc plate inside embedding stiffening plate; Being out of shape along its axis direction for preventing embedding stiffening plate, between reinforcing transverse arc plate, running through steel pipe along stiffening plate axis;
(2) heat treatment mode in stove is adopted to carry out bulk heat treatmet to stiffening plate sub-assembly.
2. the embedded reinforced structure construction technology of container large opening according to claim 1, is characterized in that:
In step 2 (3), when connecting to slab the skiving process carried out at edge, make slab connect edge and form the inclined-plane of thickness-tapered, when thickness of slab difference is greater than 5mm, it is poor that the length of skiving process is greater than the thickness of slab of 3 times.
3. the embedded reinforced structure construction technology of container large opening according to claim 1 and 2, is characterized in that:
In step 5 (1), for preventing embedding stiffening plate radian change reinforcement of weld transverse arc plate inside embedding stiffening plate, require to reinforce transverse arc plate radian consistent with radian inside embedding stiffening plate, thickness is 30mm, length long 100mm more each than the embedding every side of stiffening plate, width adds 500mm for embedding stiffening plate sagitta, and longitudinal pitch is 600-800mm; The reinforcing transverse arc plate of upper and lower both sides is not more than 100mm with the spacing embedding the upper and lower port of stiffening plate;
Embedding stiffening plate and reinforcing between transverse arc plate takes two-sided staggered intermittent to weld, weldering 100mm interval 100mm, leg height 20-35mm.
4. the embedded reinforced structure construction technology of container large opening according to claim 1 and 2, is characterized in that:
In step 5 (1), being out of shape along its axis direction for preventing embedding stiffening plate, between reinforcing transverse arc plate, running through steel pipe along stiffening plate axis, namely add three roads at embedding position, upper, middle and lower, stiffening plate inner arc side and rigidly fix steel pipe;
Steel pipe specification is Φ 273*15mm, steel pipe spacing 800mm, and steel pipe center is 200-350 millimeter to reinforcing transverse arc plate straight flange distance;
Be welded as one side full weld between steel pipe and reinforcing transverse arc plate, leg height is the minimum wall thickness (MINI W.) of steel pipe and gusset plate.
5. the embedded reinforced structure construction technology of container large opening according to claim 1 and 2, is characterized in that:
In step 5 (2), heat treatment temperature 620 ± 20 DEG C, constant temperature time 2.5h;
Programming rate: be less than 200 DEG C and do not limit, is greater than 200 DEG C of programming rates and remains between 55-90 DEG C/h, and temperature needs constant temperature 0.75 hour 200 DEG C time; Be greater than 200 DEG C when intensification is in, when being less than 300 DEG C of scopes, programming rate should be controlled at 70 DEG C/below h as far as possible;
Cooling rate: when being greater than 300 DEG C, cooling rate remains between 55-116 DEG C/h; Less than 300 DEG C cool with stove; Less than 50 DEG C can cool naturally in blow-on, and lifting is subsequently come out of the stove.
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| CN201310061360.8A CN103128420B (en) | 2013-02-27 | 2013-02-27 | Construction technology of embedded reinforcing structure for large-orifice pipe of container |
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| CN104646845B (en) * | 2014-12-18 | 2016-06-22 | 上海核电装备焊接及检测工程技术研究中心（筹） | A kind of welder with aperture thick-plate parts and welding method |
| CN105889892A (en) * | 2016-06-03 | 2016-08-24 | 中国船舶重工集团公司第七�三研究所 | Reinforcing structure for special-shaped large open hole of marine supercharged boiler |
| CN107807000B (en) * | 2016-09-27 | 2019-08-06 | 北京卫星环境工程研究所 | Horizontal vacuum vessel cylinder with oblique conical connection structure |
| CN110091037A (en) * | 2019-04-30 | 2019-08-06 | 江苏海力风电设备科技股份有限公司 | Offshore wind farm tower elastic support reinforced welding new process |
| CN111111579A (en) * | 2020-01-08 | 2020-05-08 | 张化机（苏州）重装有限公司 | Reinforcement plate structure |
| CN114055077A (en) * | 2021-10-21 | 2022-02-18 | 上海石化机械制造有限公司 | Construction method for large connecting pipe reinforcing section of second dehydrogenation reactor of styrene device |
| CN113815779B (en) * | 2021-10-22 | 2022-12-13 | 上海外高桥造船有限公司 | Opening structure |
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| C06 | Publication | ||
| PB01 | Publication | ||
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