CN101491863A

CN101491863A - Metal oil tank production method

Info

Publication number: CN101491863A
Application number: CNA2008101480941A
Authority: CN
Inventors: 傅凤义
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-12-24
Filing date: 2008-12-24
Publication date: 2009-07-29

Abstract

The invention relates to the field of mechanical processing, in particular to a welding production method for a metallic oil tank and a tank bottom. The method for producing the metallic oil tank comprises adopting a tank wall, an upper bottom plate of the tank bottom, a lower bottom plate of the tank bottom, an angle steel head, a tapered iron, and a liner plate. The method comprises the following steps: 1) performing the plate arrangement and numbering; 2) welding tank bottom plates and a tank wall plate, wherein firstly outside fillet welds between the tank bottom plates and the tank wall plate are welded, and then inside fillet welds between the tank bottom plates and the tank wall plate are welded; and 3) welding the tank bottom plates according to a numbering sequence. The method for producing the metallic oil tank is to draw a plate arrangement drawing according to the circular area of the tank bottom before the construction, weld longitudinal and transverse welds according to the sequence, calculate the shrinkage factor, and reserve adequate lapping allowance so as to avoid the hazard of sliding variable and stress concentration produced among the plates due to an action force of thermal expansion and cold shrinkage during the welding, and can effectively eliminate accumulated stress. The method for producing the metallic oil tank is applicable to the manufacturing and processing of metallic oil tanks with a volume of between 500 and 10,000 m<3>.

Description

Metal oil tank production method

Technical field

The present invention relates to field of machining, specifically relate to an a kind of metallic oil tank and a jar back welding and connect preparation method.

Background technology

The traditional fabrication method of metal oil storage tank adopts by the center and outwards welds center plate earlier, and is outside by the center, with the welding of segmentation roll-back method; The annular angle seam that jar end is connected with tank shell with the welding of segmentation roll-back method, also can adopt weldering inner ring earlier along same direction as the case may be, after weld the welding order of outer ring; The lap weld of side plate should be welded with the segmentation roll-back method from inside to outside; Weld the seam that is connected of side plate and center plate at last.Method at the bottom of the traditional welding jar is because row's plate, overlap joint are unreasonable, and welding sequence causes postwelding to form deformation of unevenness, can produce at the bottom of the stress that expanded with heat and contract with cold after big-and-middle-sized jar of back welding is intact causes jar ± deformation of unevenness of 200mm, is difficult to the requirement of the standard of ensuring the quality of products.This is because the weld seam lineal measure at jar center, the end is relatively shorter, amount of contraction is also little, and progressively with the division of weld seam in length and breadth, welding successively step by step to excircle, one step of connection length of weld seam, also a step went on foot big amount of contraction than one than a step-length, certainly lead to deformation of unevenness after causing jar back welding intact, big more at the bottom of the oil tank, its distortion is high more, considerably beyond the requirement of quality standard.And the varying load that pressure is oil plant is born at a jar end, and a jar end can often be among the fatigue deformation of depressing and raising, and along with the prolongation and the corrosion damage at jar end of time, the welding seam breaking at the bottom of will certainly causing jar produces leakage of oil, has shortened the service life of oil tank.Number of patent application is 97105199.2, name is called " method of synchronous entad method welding subordinate storage tank bottom " application for a patent for invention, outside 300mm width edge plate and bottom wallboard welding back forms one and initially rigidly fixes circle at the bottom of providing a kind of elder generation with jar, then all the other tank bottoms are divided into several donuts, finish the method for each annulus inside weld by the jar limit to the center one by one.This method weld metal tank body does not need to reinforce in addition backing material at the bottom of jar, overcome existing in since during welding the effect of expanding with heat and contract with cold cause the drawback in the rough and uneven in surface appearance of tank body " fourth " word crack, eliminated the infringement of residual stress that tank body welding back produces to the tank body quality.But the row's plate and the welding sequence of this patent application tank bottom make the weld seam out-of-flatness, can not eliminate distortion fully, influence its enforcement.

Summary of the invention

The technical problem to be solved in the present invention is at the deficiencies in the prior art, provides a kind of outermost circumference at the bottom of oil tank by row's plate numbering, in length and breadth the metal oil tank production method of welding seam No order priority welding.

A kind of metal oil tank production method of the present invention is achieved by following technical proposals: a kind of metal oil tank production method of the present invention comprises tank skin, jar end upper plate, jar beneath base plate, angle steel head, wedge, backing plate, and described method comprises that the following step poly-:

1) row's plate numbering, the outermost circumference at the bottom of oil tank are pressed welding sequence row plate numbering, and upper and lower base plate is by vertically arranging plate, and center plate is the transverse row plate; Upper and lower base plate both sides respectively are provided with 1 No. 5 plate, are followed successively by 2 No. 4 plates, and the centre is 1 No. 3 plate; Row's plate of intermediate lateral and No. 3, No. 4, No. 5 vertical plate overlap joints is 2 No. 1 plates, and row's plate of intermediate lateral and No. 1 plate overlap joint is 1 No. 2 plate; Two No. 1 plate two ends overlap with 4 No. 6 plate ends respectively;

2) tank bottom and tank shell welding, at first with the outside fillet (weld) welding at tank bottom and tank shell place, the inside fillet with tank bottom and tank shell welds again;

3) tank bottom welds in proper order, two No. 5 plates and No. 4 plate side overlap joints of upper and lower vertical row's plate, two No. 4 plates and No. 3 middle plate sides overlap joints, welding sequence is that two No. 5 plates and No. 4 plate lap-joints successively weld by the order of direction shown in 1,3,2,4 arrows, two No. 4 plates and No. 3 plates

overlap joints punishment

5,7,6,8 welding simultaneously; 4 No. 5 plates of upper and lower vertical row's plate respectively with No. 1 plate both ends overlap joint 4 No. 6 plate sides by the order of direction shown in 9,10 arrows successively welding; 4 No. 4 plates and 2 No. 3 plates of upper and lower vertical row's plate weld by 11,13,15,12,14,16 orders simultaneously with its No. 1 plate outer side edges overlap joint at the end overlap joint respectively; 2 No. 1 plate inner side edges and successively weld by the order of direction shown in 17,19,21,23,18,20,22,24 the arrow with 2 No. 2 plate dual-sides with 4 No. 6 plate inner side edges of No. 1 plate end overlap joint, 2 No. 1 plate ends and 4 No. 6 plate inner ends overlap joints are by the order of direction shown in 25,27,26,28 arrows successively welding, and overlap joint welds in proper order by direction shown in last 29 arrows in the middle of 2 No. 2 plates.

A kind of metal oil tank production method of the present invention has following beneficial effect compared with prior art: metal oil tank production method of the present invention is to have drawn material cutting plan by the area of a circle at the bottom of the jar before the construction, locate by angle steel head of the present invention and wedge between plate and the plate temporarily, and the outermost circumference at the bottom of oil tank is by row's plate numbering, weld seam successively welds in order in length and breadth, calculate shrinkage factor by the weld seam characteristic that weld seam shrinks, stop the overlap joint surplus, the slippage variable that active force produced is expanded with heat and contract with cold between plate and the plate when having solved welding, and the concentrated harm of the stress that is caused, can effectively eliminate cumulative stress.The present invention is earlier the longest with the excircle weld seam on the welding level, and the part that amount of contraction and shrinkage stress are the strongest is handled well earlier, is finalized the design, because all tank bottoms all are in free state, after the welding, the convergent force that produced of cooling can be eliminated, the flatness at the bottom of can ensureing jar.And the inventive method is in when welding, and by the zone welding, fusion length and amount of contraction are also gradually reducing along with outside in, the stress that produces is also progressively weakening under the phorogenesis of plate and plate, can not accumulate excessive, and be subjected under the stress effect effect that makes base plate obtain evening up.In addition, because that jar end excircle and the angle welding of tank skin are handled is reasonable, so excircle did not become wavy distortion at the bottom of the method for outside weld, tank shell and the inside weld of tank bottom junction of promptly first welded tank wallboard and tank bottom junction can not produce jar.Rough and uneven in surface degree is no more than ± 5mm at the bottom of a kind of metal oil tank production method jar of the present invention, and the convex-concave difference is no more than ± 5～10mm.A kind of metal oil tank production method of the present invention solves and has eliminated the difficult problem of the convex-concave distortion that weld produces at the bottom of the metallic oil tank jar, smooth firm at the bottom of making jar, eliminate a jar back welding living harmful stress of practicing midwifery, guaranteed technical quality, prolonged the service life of oil tank, save raw material, shortened the duration.A kind of metal oil tank production method of the present invention is applicable to 500m ³～10000m ³The manufacturing of metal oil storage tank and processing.

Description of drawings

A kind of metal oil tank production method of the present invention has following accompanying drawing:

Fig. 1 is row's plate and welding sequence master TV structure schematic diagram at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention;

Fig. 2 is sectional structure schematic diagram at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention

Fig. 3 at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention with angle steel head wedge location structure schematic diagram;

Fig. 4 is a kind of metal oil tank production method embodiment 1 base corner steel toe of the present invention and wedge location E-E sectional structure schematic diagram;

Fig. 5 is row's plate structure A-A sectional structure schematic diagram at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention;

Fig. 6 is row's plate structure B-B sectional structure schematic diagram at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention;

Fig. 7 is the local structure for amplifying schematic diagram of row's plate structure I at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention;

Fig. 8 is the local D-D sectional structure schematic diagram that amplifies of row's plate structure I at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention;

Fig. 9 is the local structure for amplifying schematic diagram of row's plate structure II at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention;

Figure 10 is the local C-C sectional structure schematic diagram that amplifies of row's plate structure II at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention;

Figure 11 is the local structure for amplifying schematic diagram of row's plate structure III at the bottom of 1 jar of a kind of metal oil tank production method embodiment of the present invention;

Figure 12 is row's plate and welding sequence master TV structure schematic diagram at the bottom of 2 jars of a kind of metal oil tank production method embodiment of the present invention;

Figure 13 is row's plate and welding sequence master TV structure schematic diagram at the bottom of 3 jars of a kind of metal oil tank production method embodiment of the present invention;

Figure 14 is row's plate and welding sequence master TV structure schematic diagram at the bottom of 4 jars of a kind of metal oil tank production method embodiment of the present invention;

Figure 15 is row's plate and welding sequence master TV structure schematic diagram at the bottom of 5 jars of a kind of metal oil tank production method embodiment of the present invention;

Figure 16 is row's plate and welding sequence master TV structure schematic diagram at the bottom of 6 jars of a kind of metal oil tank production method embodiment of the present invention.

Wherein: 1, tank skin; 2, jar end upper plate; 3, jar beneath base plate; 4, angle steel head; 5, wedge; 6, backing plate; 7, weld seam; 8, angle steel head spaced lines.

Band " # " number is represented plating numerals among the figure, and arrowed

numeral

1,2,3,4,5,6-188 represent welding sequence.

The specific embodiment

Below in conjunction with drawings and Examples a kind of metal oil tank production method technical scheme of the present invention is further described.

As Fig. 1-shown in Figure 11, a kind of metal oil tank production method comprise tank skin 1, jar end upper plate 2, jar under base plate 3, angle steel head 4, wedge 5, backing plate 6, weld seam 7, angle steel head spaced lines 8, described method comprises that the following step poly-:

1) row's plate numbering, the outermost circumference at the bottom of oil tank are pressed welding sequence row plate numbering, and upper and lower base plate is by vertically arranging plate, and the centre is the transverse row plate; Upper and lower base plate both sides respectively are provided with 1 No. 5 plate, are followed successively by 2 No. 4 plates, and the centre is 1 No. 3 plate; Row's plate of intermediate lateral and No. 3, No. 4, No. 5 vertical plate overlap joints is 2 No. 1 plates, and row's plate of intermediate lateral and No. 1 plate overlap joint is 1 No. 2 plate; Two No. 1 plate two ends overlap with 4 No. 6 plate ends respectively;

3) tank bottom welds in proper order, two No. 5 plates and No. 4 plate side overlap joints of upper and lower vertical row's plate, two No. 4 plates and No. 3 middle plate sides overlap joints, welding sequence is that two No. 5 plates and No. 4 plate lap-joints successively weld by direction order shown in

numeral

1,3,2,4 arrows, and two No. 4 plates and No. 3 plates overlap direction order shown in

punishment

5,7,6,8 arrows and successively weld; 4 No. 5 plates of upper and lower vertical row's plate respectively with No. 1 plate both ends overlap joint 4 No. 6 plate sides by the order of direction shown in 9,10 arrows successively welding; 4 No. 4 plates and 2 No. 3 plates of upper and lower vertical row's plate are pressed the welding successively of the order of direction shown in 11,13,15,12,14,16 arrows with its No. 1 plate outer side edges overlap joint at the end overlap joint respectively; 2 No. 1 plate inner side edges and successively weld by the order of direction shown in 17,19,21,23,18,20,22,24 the arrow with 2 No. 2 plate dual-sides with 4 No. 6 plate inner side edges of No. 1 plate end overlap joint, 2 No. 1 plate ends and 4 No. 6 plate inner ends overlap joints are by the order of direction shown in 25,27,26,28 arrows successively welding, and overlap joint welds in proper order by direction shown in last 29 arrows in the middle of 2 No. 2 plates.

Between the both sides listrium of described jar Bottom Edge Board and tank shell welding position is trapezoidal overlapping the slot, and leaves the 9mm gap; The weld of margin plate and tank shell is a circular arc.

Before the welding of described tank bottom and tank shell at per two backing plates 6 of 15 * 50 * 300mm of spot welding under the base plates of overlap joint mutually, with two base plates location of overlap joint mutually.

When the weld seam of 2 base plates of described mutual overlap joint welds, the lower shoe angle steel head 4 that 50 * 50 * 5 of 1 wide 50mm of welding angle steel is made on plane on the base plate under the jar 3, base plate 3 is gone into wedge 5 contracts in the lower shoe angle steel head 4 after overlapping well with jar end upper plate 2 under the jar, with a base plate under the jar 3 and jar end upper plate 2 fixing compacts, when welding wedge 5 places, take down wedge 5, weld again.

Described distance between the every adjacent two angle steel heads 4 on the weld seam in length and breadth is 800mm.

Described 4 No. 5 margin plates are swing link; 2 No. 3 plates, 4 No. 4 plates, 4 No. 6 plates, 2 No. 2 plates that all the other and tank shell weld are fanning strip.

Embodiment 1.

As shown in Figure 1, present embodiment tank volume V=500M ³, height H=7980mm, jar end diameter of phi=9154mm, tank skin overall diameter Φ=9010mm.Material A3F, tank skin steel plate thickness δ=5mm, bottom sheets thickness δ=7mm.

Material computing formula under the metallic oil tank jar:

First kind of algorithm: when oil tank wall overall diameter Φ is 9010mm,

Girth=(9010+9010 * 6 ‰) * 3.1416

＝(9010+54.06)×3.1416

＝9064.06×3.1416

=28475.65mm (girth)

Second kind of algorithm: when oil tank wall overall diameter Φ is 9010mm,

Girth=9010 * 3.1416 * 0.006+ (9010 * 3.1416)

＝28305.81×0.006+28305.81

＝169.84+28305.81

=28475.65mm (girth)

Actual blanking diameter at the bottom of the oil tank jar: when girth is 28475.65mm,

Φ＝28475.65÷3.1416+(9100-9010)

＝9064.06+90

＝9154.06mm

6 ‰ is shrinkage factor in the formula.

The first step: earlier blanking is numbered by row's plate shown in Figure 1, the outermost circumference at the bottom of oil tank is by welding sequence row plate numbering, and upper and lower base plate is by vertical row's plate, and the centre is the transverse row plate; It is No. 5 plates on circular arc limit that upper and lower base plate both sides respectively are provided with 1 limit relative with two right-angle sides, is followed successively by 2 No. 4 plates, and the centre is 1 No. 3 plate; Row's plate of intermediate lateral and No. 3, No. 4, No. 5 vertical plate overlap joints respectively is up and down 1 No. 1 plate, row's plate both ends that intermediate lateral and No. 1 plate overlap be the circular arc limit be 2 No. 2 plates; Two No. 1 plate two ends are respectively No. 6 plate straight line end overlap joints on circular arc limit with 4 outer ends;

Second step, tank bottom and tank shell 1 welding, at first with the outside fillet (weld) welding twice at tank bottom and tank shell place, the inside fillet with tank bottom and tank shell welds twice again;

The 3rd step, the welding of per two block edge plates and tank shell 1 weld is welded shown in Fig. 7, I partial enlarged drawing shown in Figure 8, promptly No. 6 plate upper plates 2 are being cut sth. askew one with tank shell 1 weld, No. 2 plate lower shoe 3 is cut sth. askew one equally with tank shell 1 weld and No. 6 plate corresponding sections, below No. 6 plate upper plates 2 and No. 2 plate lower shoe 3 places of cutting sth. askew, 6 weldings of a backing plate are set, all margin plates and tank shell 1 weld are all pressed this welding, as Fig. 1, Fig. 7, shown in Figure 8; Weld shown in Fig. 9, II partial enlarged drawing shown in Figure 10 in No. 1 plate of center plate, No. 2 plates and No. 6 plate lap-joints of margin plate, i.e. No. 2 plate lower shoes 3 and No. 1 plate upper plate 2 overlap joint welding, No. 6 plate upper plates 2 are overlapped on No. 1 plate upper plate 2 top and No. 6 plate upper plate 2 lap-joints are cut sth. askew one, as Fig. 9, shown in Figure 10; The welding of every block edge plate and center plate is by reaching Fig. 3, welding shown in Figure 4 shown in the III partial enlarged drawing shown in Figure 11, weld seam all need use angle steel head 4, wedge 5 to fix, the lower shoe angle steel head 4 that 50 * 50 * 5 of 1 wide 50mm of welding angle steel is made on plane on the base plate under the jar 3, base plate 3 is cut into oblique wedge 5 contracts with 50 * 50 * 5 * 165 angle steel with jar end upper plate 2 overlap joints after good and goes in the lower shoe angle steel head 4 under jar, with a base plate under the jar 3 and jar end upper plate 2 fixing compacts, when welding wedge 5 places, take down wedge 5, weld again.As shown in Figure 3, Figure 4.

The 4th step, tank bottom welds in proper order, two No. 5 plates and No. 4 plate side overlap joints by upper and lower vertical row's plate shown in Figure 1, two No. 4 plates and No. 3 middle plate sides overlap joints, welding sequence is that two No. 5 plates and No. 4 plate lap-joints successively weld by 1,3,2,4 arrows order direction, and two No. 4 plates and No. 3 plate overlap joint punishment 5,7,6,8 arrows order directions are successively welded; 4 No. 5 plates of upper and lower vertical row's plate successively weld by 9,10 arrows order direction with 4 No. 6 plate sides of No. 1 plate both ends overlap joint respectively; 4 No. 4 plates and 2 No. 3 plates of upper and lower vertical row's plate successively weld by 11,13,15,12,14,16 arrows order direction with its No. 1 plate outer side edges overlap joint at the end overlap joint respectively; 2 No. 1 plate inner side edges and with 4 No. 6 plate inner side edges of No. 1 plate end overlap joint and 2 No. 2 plate dual-sides by 17,19,21,23,18,20,22,24 arrow in proper order direction successively weld, 2 No. 1 plate ends and 4 No. 6 plate inner ends overlap joints weld simultaneously by 25,27,26,28 arrows order direction, and overlap joint is by the welding of last 29 arrows order direction in the middle of 2 No. 2 plates.As shown in Figure 1.

After the tank bottom welding is finished, the outside R=1700mm through the center, divide at 45=8 test point to carry out plane convex-concave degree inspection on the circumference of Φ=3400mm, be respectively ± 0mm ,+3mm ,-5mm, ± 0mm ,-8mm, ± 0mm ,+8mm ,+6mm, be far smaller than code requirement convex-concave degree ± 50mm.Through vacuum, water filling test, all there is not leakage phenomenon.

Embodiment 2.

Present embodiment tank volume V=1000M ³, height H=12690mm, jar end diameter of phi=11218mm, tank skin overall diameter Φ=11012mm.Material Q235-AF, Q235A, tank skin steel plate thickness δ=6mm, bottom sheets thickness δ=6～7mm.

Material computing formula under the metallic oil tank jar:

First kind of algorithm: when oil tank wall overall diameter Φ is 11012mm,

Girth=(11012+11012 * 8 ‰) * 3.1416

＝(11012+88.1)×3.1416

＝11100.1×3.1416

=34872.1mm (girth)

Second kind of algorithm: when oil tank wall overall diameter Φ is 11012mm,

Girth=11012 * 3.1416 * 0.008+ (11012 * 3.1416)

＝34595.3×0.008+34595.3

＝276.76+34595.3

=34872.1mm (girth)

Actual blanking diameter at the bottom of the oil tank jar: when girth is 34872.1mm,

Φ＝34872.1÷3.1416+(11130-11012)

＝11100.1+118

＝11218mm

8 ‰ is shrinkage factor in the formula.

The first step: earlier with blanking by girth at the bottom of the aforementioned calculation oil tank jar or oil tank jar at the bottom of the diameter blanking, the plate of row shown in pressing numbering, the outermost circumference at the bottom of oil tank be by welding sequence row plate numbering, upper and lower base plate is by vertical row's plate, the centre is the transverse row plate; It is No. 9 plates on circular arc limit with two right-angle side relative edges that jar upper and lower both sides, the end respectively are provided with 1, is followed successively by 2 No. 8 plates, two No. 7 plates, and the centre is 1 No. 6 plate; Intermediate lateral up and down both sides and No. 9 plates, No. 8 plates, No. 7 plates, No. 6 plate plates overlap 1 No. 1 plate respectively is set, be No. 5 plates on circular arc limit one side No. 1 plate both ends respectively are provided with 1; Jar end up and down with No. 1 plate transverse lap 2 No. 2 plates respectively are set, be No. 4 plates on circular arc limit one side No. 2 plate dual-sides respectively are provided with 1, lateral center is provided with 1 No. 1 plate, No. 3 plates that it is the circular arc limit that No. 1 plate both ends are provided with two 1 ends;

Second step, tank bottom and tank shell welding, at first with the outside fillet (weld) welding twice at tank bottom and tank shell place, the inside fillet with tank bottom and tank shell welds twice again;

The 3rd step, the welding of per two block edge plates and tank shell 1 weld is welded shown in Fig. 7, I partial enlarged drawing shown in Figure 8, promptly No. 4 plate upper plates 2 are being cut sth. askew one with tank shell 1 weld, No. 3 plate lower shoe 3 is cut sth. askew one equally with tank shell 1 weld and No. 4 plate corresponding sections, below No. 4 plate upper plates 2 and No. 3 plate lower shoe 3 places of cutting sth. askew, 6 weldings of a backing plate are set, all margin plates and tank shell 1 weld are all pressed this welding, as Fig. 1, Fig. 7, shown in Figure 8; Weld shown in Fig. 9, II partial enlarged drawing shown in Figure 10 in No. 1 plate of center plate, No. 2 plates and No. 3 plates of margin plate, No. 4 plates, No. 5 plate lap-joints, i.e. No. 2 plate lower shoes 3 and No. 1 plate upper plate 2 overlap joint welding, No. 5 plate upper plates 2 are overlapped on No. 1 plate upper plate 2 top and No. 5 plate upper plate 2 lap-joints are cut sth. askew one, as Fig. 9, shown in Figure 10; The welding of every block edge plate and center plate is by reaching Fig. 3 shown in the III partial enlarged drawing shown in Figure 11, welding shown in Figure 4, all need use angle steel head 4 before the welding, wedge 5 is with upper plate 2 and lower shoe 3 positioning and fixing, the i.e. lower shoe angle steel head 4 that 50 * 50 * 5 the angle steel of 1 wide 50mm of welding is made on plane on the base plate under the jar 3, base plate 3 is cut into oblique wedge 5 contracts with 50 * 50 * 5 * 165 angle steel with jar end upper plate 2 overlap joints after good and goes in the lower shoe angle steel head 4 under jar, with a base plate under the jar 3 and jar end upper plate 2 fixing compacts, the fixed range of lower shoe orientation angle steel toe 4 is by shown in Figure 11 apart from the 800mm positioning and fixing; When welding wedge 5 places, take down wedge 5, weld again.As shown in Figure 3, Figure 4.After all welding finishes at the jar end, remove angle steel head 4.

The 4th step, tank bottom welds in proper order, two No. 9 plates and No. 8 plate side overlap joints by upper and lower vertical row's plate shown in Figure 12, two No. 8 plates and two adjacent No. 7 plate sides overlap joints, two No. 7 plates weld with 1 middle No. 6 plate longitudinal lap joint, welding sequence is that two No. 9 plates and two No. 8 plate lap-joints weld in proper order by 1,2 directions of arrow, and two No. 8 plates and two No. 7 plate lap-joints are by 3,4 directions of arrow order successively welding, and two No. 7 plates and No. 6 plates weld in proper order by 5,6 directions of arrow; 4 No. 9 plates of upper and lower vertical row's plate, 4 No. 8 plates, 4 No. 7 plates and 2 No. 6 plates and up and down 2 No. 1 plates and with 4 No. 5 plate sides of No. 1 plate both ends overlap joint by 7,9,11,8,10,12 directions of arrow order successively welding; 4 No. 2 plates of upper and lower transverse row plate and 2 No. 1 plates adjacent with No. 2 plate outsides respectively with its at 4 No. 5 plates of end overlap joint and No. 4 plate outer side edges overlap joints by 13,15,17,14,16,18 directions of arrow order successively welding; 4 No. 4 plates of 4 No. 2 plate inner side edges and end and with 2 No. 3 plate dual-sides of No. 1 plate of central horizontally set and end overlap joint by 19,21,23,25,20,22,24,26 direction of arrow order welding successively; 4 No. 5 plate inner ends of 2 No. 1 plates of the transverse row plate second layer and its outer end successively weld by the order of direction shown in 27,29,28,30 arrows at jar the end; The jar end, arranged 4 No. 4 plate inner ends of plate 4 No. 2 plate of the 3rd floor and its outer end overlap joint up and down by the welding simultaneously of the order of direction shown in 31,33,32,34 arrows, and 4 No. 2 plate inner ends are by direction shown in 35,36 arrows in proper order successively welding; 2 No. 3 plate inner ends that 1 No. 1 plate outer end of central authorities' transverse row plate and its end are provided with are by the order of direction shown in 37,38 arrows successively welding.As shown in figure 12.

Embodiment 3.

Present embodiment tank volume V=2000M ³, height H=11200mm, jar end diameter of phi=16076mm, tank skin overall diameter Φ=15830mm.Material Q235-AF, Q235A, tank skin steel plate thickness δ=6-8mm, bottom sheets thickness δ=6～7mm.

Material computing formula under the metallic oil tank jar:

First kind of algorithm: when oil tank wall overall diameter Φ is 15830mm,

Girth=(15830+15830 * 8 ‰) * 3.1416

＝(15830+126.64)×3.1416

＝15956.64×3.1416

=50129.38mm (girth)

Second kind of algorithm: when oil tank wall overall diameter Φ is 15830mm,

Girth=15830 * 3.1416 * 0.008+ (15830 * 3.1416)

＝49731.53×0.008+49731.53

＝397.85+49731.53

=50129.38mm (girth)

Actual blanking diameter at the bottom of the oil tank jar: when girth is 50129.38mm,

Φ＝50129.38÷3.1416+(15950-15830)

＝15956.641+120

＝16076.64mm

8 ‰ is shrinkage factor in the formula.

The first step: earlier with blanking by girth at the bottom of the aforementioned calculation oil tank jar or oil tank jar at the bottom of the diameter blanking, the plate of row shown in pressing numbering, the outermost circumference at the bottom of oil tank be by welding sequence row plate numbering, upper and lower base plate is by vertical row's plate, the centre is the transverse row plate; Upper and lower jar of both sides, the end respectively are provided with No. 7 plates of 1 two right-angle side relative edge for the circular arc limit, and being followed successively by 2 one edges is No. 8 plates on circular arc limit, and the centre is that 1 one edge is No. 9 plates on circular arc limit; 2 edges that the horizontal successively row's plate with No. 7 plates, No. 8 plates, No. 9 plate overlap joints is 2 No. 2 plates and its end are No. 5 plates on circular arc limit, 1 No. 1 plate and its both ends were provided with No. 4 plates that the edge is the circular arc limit in the middle of the 3rd floor was set to up and down, 2 No. 1 plates and its end were provided with No. 6 plates that 2 edges are the circular arc limit in the middle of the 4th floor was set to up and down, and 1 No. 1 plate of central horizontally set and its end are provided with No. 3 plates that 2 edges are the circular arc limit;

The 3rd step, the welding of per two block edge plates and tank shell 1 weld is welded shown in Fig. 7, I partial enlarged drawing shown in Figure 8, promptly No. 4 plate upper plates 2 are being cut sth. askew one with tank shell 1 weld, No. 3 plate lower shoe 3 is cut sth. askew one equally with tank shell 1 weld and No. 4 plate corresponding sections, below No. 4 plate upper plates 2 and No. 3 plate lower shoe 3 places of cutting sth. askew, 6 weldings of a backing plate are set, all margin plates and tank shell 1 weld are all pressed this welding, as Fig. 1, Fig. 7, shown in Figure 8; Weld shown in Fig. 9, II partial enlarged drawing shown in Figure 10 in No. 1 plate of center plate, No. 2 plates and No. 3 plates of margin plate, No. 4 plates, No. 5 plate lap-joints, i.e. No. 2 plate lower shoes 3 and No. 1 plate upper plate 2 overlap joint welding, No. 5 plate upper plates 2 are overlapped on No. 1 plate upper plate 2 top and No. 5 plate upper plate 2 lap-joints are cut sth. askew one, as Fig. 9, shown in Figure 10; The welding of every block edge plate and center plate is by reaching Fig. 3 shown in the III partial enlarged drawing shown in Figure 11, welding shown in Figure 4, all need use angle steel head 4 before the welding, wedge 5 is with upper plate 2 and lower shoe 3 positioning and fixing, the i.e. lower shoe angle steel head 4 that 63 * 63 * 5 the angle steel of 1 wide 60mm of welding is made on plane on the base plate under the jar 3, base plate 3 is cut into oblique wedge 5 contracts with 63 * 63 * 5 * 180 angle steel with jar end upper plate 2 overlap joints after good and goes in the lower shoe angle steel head 4 under jar, with a base plate under the jar 3 and jar end upper plate 2 fixing compacts, the fixed range of lower shoe orientation angle steel toe 4 is by shown in Figure 11 apart from the 800mm positioning and fixing; When welding wedge 5 places, take down wedge 5, weld again.As shown in Figure 3, Figure 4.After all welding finishes at the jar end, remove angle steel head 4.

The 4th step, tank bottom welds in proper order, press 2 No. 7 plates and 2 No. 8 plate side laps of the upper and lower vertical row's plate of Figure 13,2 No. 8 plates and No. 9 middle plate side laps, welding sequence is that 2 No. 7 plates and 2 No. 8 plate lap-joints successively weld by 1,2 directions of arrow order, and 2 No. 8 plates and No. 9 plate lap-joints are by 3,4 directions of arrow order successively welding; Among the figure 4 of upper and lower second layer transverse row plate No. 2 plates respectively with No. 1 plate both ends overlap joint 4 No. 5 plate sides by the order of direction shown in 5,7,9,11,13,6,8,10,12,14 arrows successively welding; The welding of 4 No. 5 plate sides of 4 No. 4 plates at 2 of upper and lower transverse row plate the 3rd floor No. 1 plates and both ends thereof and 4 No. 2 plates of the second layer and end thereof is by the order of direction shown in 15,17,19,21,16,18,20,22 arrows successively welding among the figure; Among the figure up and down 4 No. 6 plates of 2 No. 1 plates of transverse row plate the 4th floor and end thereof successively weld by the order of direction shown in 23,25,27,29,31,24,26,28,30,32 arrows with the welding of 4 No. 4 plate sides of 2 No. 1 plate of the 3rd floor and end thereof; 4 No. 6 plate sides that 4 No. 1 plates of 2 No. 3 plates that 1 No. 1 plate of central authorities' transverse row plate and end thereof are provided with and the 4th floor setting and end thereof are provided with successively weld by the order of direction shown in 33,35,37,39,41,43,34,36,38,40,42,44 arrows; 4 No. 2 plate outer end portions of the transverse row plate second layer and 4 No. 5 plate ends are by the order of direction shown in 45,48,46,49 arrows successively welding, and the end is by the order of direction shown in 47,50 arrows successively welding in the middle of per 2 No. 2 plates; 2 No. 34 No. 4 plate inner ends that transverse row plate 2 No. 1 plate of the 3rd floor and its end are provided with are by the order of direction shown in 51,53,52,54 arrows successively welding; 4 No. 6 plate inner ends of transverse row plate 4 No. 1 plate of the 4th floor and its outer end are by the order of direction shown in 55,58,56,59 arrows successively welding, and per 2 No. 1 plate inner ends are by the order of direction shown in 57,60 arrows successively welding; 2 No. 3 plate inner ends that 1 No. 1 plate outer end of central authorities' transverse row plate and its end are provided with order welding successively in a direction indicated by the arrow.After all welding finishes, will fix with lower shoe angle steel head 4 and remove.As shown in figure 13.

Embodiment 4.

Present embodiment tank volume V=3000M ³, height H=123000mm, jar end diameter of phi=19316mm, tank skin overall diameter Φ=19004mm.Material Q235-AF, Q235A, tank skin steel plate thickness δ=6-11mm, bottom sheets thickness δ=7～9mm.

Material computing formula under the metallic oil tank jar:

First kind of algorithm: when oil tank wall overall diameter Φ is 19004mm,

Girth=(19004+19004 * 10 ‰) * 3.1416

＝(19004+190.04)×3.1416

＝19194.04×3.1416

=60299.99mm (girth)

Second kind of algorithm: when oil tank wall overall diameter Φ is 19004mm,

Girth=19004 * 3.1416 * 0.010+ (19004 * 3.1416)

＝59702.96×0.010+59702.96

＝597.03+59702.96

=60299.99mm (girth)

Actual blanking diameter at the bottom of the oil tank jar: when girth is 60299.99mm,

Φ＝60299.99÷3.1416+(19126-19004)

＝19194.04+122

＝19316.04mm

10 ‰ is shrinkage factor in the formula.

The first step: earlier with blanking by girth at the bottom of the aforementioned calculation oil tank jar or oil tank jar at the bottom of the diameter blanking, the plate of row shown in pressing numbering, the outermost circumference at the bottom of oil tank be by welding sequence row plate numbering, upper and lower base plate is by vertical row's plate, the centre is the transverse row plate; It is No. 11 plates on circular arc limit with two right-angle side relative edges that jar upper and lower base plate both sides, the end respectively are provided with 2, inwardly is that 2 one edges are No. 10 plates on circular arc limit successively, and 2 one edges are No. 9 plates on circular arc limit, and the centre is that 1 one edge is No. 8 plates on circular arc limit; The transverse row plate up and down respectively is provided with No. 3 plates that 2 one edges are the circular arc limit in the second layer No. 1 plate and outer end thereof that 1 rectangle respectively is set; The transverse row plate respectively is provided with 2 No. 1 plates in the 3rd floor centre up and down, and two No. 1 the plate outer end respectively is provided with No. 6 plates that 2 one edges are the circular arc limit; The transverse row plate respectively is provided with 1 No. 1 plate in the 4th floor centre up and down, and No. 1 plate outer end respectively is provided with No. 2 plates of 1 rectangle, and two No. 2 plate outer ends respectively are provided with No. 7 plates that 1 one edge is the circular arc limit; In the middle of the layer 5 two No. 1 plate outer ends of 2 No. 1 plates are set respectively about the transverse row plate No. 4 plates that 1 one edge is the circular arc limit respectively are set; In the middle of central authorities' transverse row plate is 1 No. 1 plate, and No. 1 plate two outer ends respectively are provided with 1 No. 2 plate, and two No. 2 plate outer ends respectively are provided with No. 5 plates that 1 edge is the circular arc limit.As shown in figure 14.

The 3rd step, the welding of per two block edge plates and tank shell 1 weld is welded shown in Fig. 7, I partial enlarged drawing shown in Figure 8, promptly No. 4 plate upper plates 2 are being cut sth. askew one with tank shell 1 weld, No. 3 plate lower shoe 3 is cut sth. askew one equally with tank shell 1 weld and No. 4 plate corresponding sections, below No. 4 plate upper plates 2 and No. 3 plate lower shoe 3 places of cutting sth. askew, 6 weldings of a backing plate are set, all margin plates and tank shell 1 weld are all pressed this welding, as Fig. 1, Fig. 7, shown in Figure 8; Weld shown in Fig. 9, II partial enlarged drawing shown in Figure 10 in No. 1 plate of center plate, No. 2 plates and No. 3 plates of margin plate, No. 4 plates, No. 5 plate lap-joints, i.e. No. 2 plate lower shoes 3 and No. 1 plate upper plate 2 overlap joint welding, No. 5 plate upper plates 2 are overlapped on No. 1 plate upper plate 2 top and No. 5 plate upper plate 2 lap-joints are cut sth. askew one, as Fig. 9, shown in Figure 10; The welding of every block edge plate and center plate is by reaching Fig. 3, welding shown in Figure 4 shown in the III partial enlarged drawing shown in Figure 11, all need use angle steel head 4, wedge 5 to fix before the welding, the lower shoe angle steel head 4 that 63 * 63 * 6 of 1 wide 60mm of welding angle steel is made on plane on the base plate under the jar 3, base plate 3 is cut into oblique wedge 5 contracts with 63 * 63 * 6 * 180 angle steel with jar end upper plate 2 overlap joints after good and goes in the lower shoe angle steel head 4 under jar, with a base plate under the jar 3 and jar end upper plate 2 fixing compacts, when welding wedge 5 places, take down wedge 5, weld again.As shown in Figure 3, Figure 4.

In the 4th step, tank bottom welds in proper order, successively welds by the order of direction shown in 1,3,5,2,4,6 arrows by limit, longitudinal side of vertically arranging 4 No. 11 plates of plate, 4 No. 10 plates, 4 No. 9 plates and 2 No. 8 plates up and down shown in Figure 14; 4 No. 3 plate long sides of 2 No. 1 plates of the second layer and outer end thereof are with vertically 4 No. 11 plates, 4 No. 10 plates, 4 No. 9 plates and 2 No. 8 plate inner ends of row's plate are pressed the welding in proper order successively of direction shown in 7,9,11,13,15,17,8,10,12,14,16,18 arrows about the transverse row plate; Transverse row plate up and down 4 No. 6 plate long sides of 4 No. 1 plate of the 3rd floor and outer end thereof successively welds by the order of direction shown in 19,21,23,25,27,29,20,22,24,26,28,30 arrows with the welding of 4 No. 3 plate adjacent long side of 2 No. 1 plates of the second layer and end thereof; The transverse row plate up and down welding of 4 No. 6 plate adjacent side of 4 No. 1 plates of 4 No. 7 plates and the 3rd floor of 4 No. 2 plates of 2 No. 1 plate of the 4th floor and outer end thereof and No. 2 plate outer ends and outer end thereof successively welds by the order of direction shown in 31,33,35,37,39,41,43,45,47,32,34,36,38,40,42,44,46,48 arrows; The transverse row plate up and down welding of 4 No. 7 plate adjacent long side of 4 No. 2 plates of 2 No. 1 plates of 4 No. 4 plates and the 4th floor of 4 No. 1 plates of layer 5 and outer end thereof and outer end thereof and No. 2 plate outer ends successively welds by the order of direction shown in 49,51,53,55,57,59,50,52,54,56,68,60 arrows; 2 No. 5 plates of 1 No. 1 plate in centre of central authorities' transverse row plate and 2 No. 2 plates of outer end and No. 2 plate outer ends are adjacent the welding of 4 No. 1 plates of layer 5 of the plate of transverse row up and down of both sides and 4 No. 4 plate long sides by the order of direction shown in 61,63,65,67,69,71,73,75,62,64,66,68,70,72,74,76 arrows successively welding; The welding of 4 No. 3 plate inner ends of 2 No. 1 plates of the second layer and its outer end is by the order of direction shown in 77,79,78,80 arrows successively welding about the transverse row plate; The welding of 4 No. 6 plate inner ends of 4 No. 1 plate of the 3rd floor and its outer end is by the order of direction shown in 81,84,83,86,82,85 arrows successively welding about the transverse row plate; The welding of 4 No. 7 plate inner ends of 4 No. 2 plates of 2 No. 1 plate of the 4th floor and its outer end and No. 2 plate outer ends is by the order of direction shown in 87,91,89,93,88,92,90,94 arrows successively welding about the transverse row plate; The welding of 4 No. 4 plate inner ends of 4 No. 1 plates of layer 5 and its outer end is by the order of direction shown in 95,98,96,99,97,100 arrows successively welding about the transverse row plate; 2 No. 2 plate inner ends of 1 No. 1 plate in centre of central authorities' transverse row plate and outer end thereof and the welding of No. 2 plate outer ends and 2 No. 5 plate inner ends are successively welded by the order of direction shown in 101,102,103,104 arrows.

Embodiment 5.

Present embodiment tank volume V=5000M ³, height II=12670mm, jar end diameter of phi=24138mm, tank skin overall diameter Φ=23724mm.Material Q235-A, tank skin steel plate thickness δ=6～12mm, bottom sheets thickness δ=7～9mm.

Material computing formula under the metallic oil tank jar:

First kind of algorithm: when oil tank wall overall diameter Φ is 23724mm,

Girth=(23724+23724 * 13 ‰) * 3.1416

＝(23724+308.41)×3.1416

＝24032.41×3.1416

=75500.22mm (girth)

Second kind of algorithm: when oil tank wall overall diameter Φ is 23724mm,

Girth=23724 * 3.1416 * 0.013+ (23724 * 3.1416)

＝74531.32×0.013+74531.32

＝968.91+74531.32

=75500.22mm (girth)

Actual blanking diameter at the bottom of the oil tank jar: when girth is 75500.22mm,

Φ＝75500.22÷3.1416+(23830-23724)

＝24032.41+106

＝24138.41mm

13 ‰ is shrinkage factor in the formula.

The first step: earlier with blanking by girth at the bottom of the aforementioned calculation oil tank jar or oil tank jar at the bottom of the diameter blanking, the plate of row shown in pressing numbering, the outermost circumference at the bottom of oil tank be by welding sequence row plate numbering, upper and lower base plate is by vertical row's plate, the centre is the transverse row plate; Upper and lower vertical row's plate ground floor both sides respectively are provided with No. 9 plates of 1 two right-angle side relative edge for the circular arc limit, be followed successively by No. 8 plates that 2 one edges are the circular arc limit are set, 2 one edges are No. 7 plates on circular arc limit, 2 one edges are No. 6 plates on circular arc limit, 2 one edges are No. 5 plates on circular arc limit, 2 one edges are No. 4 plates on circular arc limit, and the centre is that 1 one edge is No. 3 plates on circular arc limit; Respectively be set to No. 1 plate of 3 rectangles in the middle of upper and lower first row of row's plate ecto-entad of the transverse row plate second layer and longitudinal edge plate overlap joint, No. 1 plate outer end, two ends is provided with No. 14 plates that 1 one edge is the circular arc limit respectively, the transverse row plate respectively is provided with 2 No. 1 plates in the 3rd floor centre up and down, No. 1 plate two outer ends respectively are provided with No. 2 plates of 1 rectangle, and 2 No. 2 plate outer ends respectively are provided with No. 13 plates that 1 one edge is the circular arc limit; The transverse row plate respectively is provided with 3 No. 1 plates in the 4th floor centre up and down, and No. 1 plate outer end at two ends respectively is provided with No. 12 plates that 1 one edge is the circular arc limit; The transverse row plate respectively is provided with 2 No. 1 plates in the middle of the layer 5 up and down, and No. 1 the plate outer end respectively is provided with 1 No. 2 plate, and No. 2 the plate outer end respectively is provided with No. 11 plates that 1 one edge is the circular arc limit; 3 No. 1 plates of central authorities' horizontally set, No. 1 plate outer end at two ends respectively is provided with No. 10 plates that 1 one edge is the circular arc limit;

The 4th step, tank bottom welds in proper order, by Figure 15 vertically arrange plate up and down the margin plate of ground floor 2 No. 9 plates overlap with No. 8 plate sides from both sides, be followed successively by plate No. 7, No. 6 plates, No. 5 plates, No. 4 plates, No. 3 plates, on, the dual-side of each 13 margin plate is from outside to inside successively by 1 down, 3,5,7,9,11,2,4,6,8,10, the priority welding in proper order of direction shown in 12 arrows, transverse row plate be 6 No. 1 plates of the second layer and 4 No. 14 plate long sides of outer end setting and 4 No. 9 plates of vertical row's plate up and down, 4 No. 8 plates, 4 No. 7 plates, 4 No. 6 plates, the welding of 4 No. 4 plates and 2 No. 3 plate inner ends is by 23,25,27,29,31,33,35,24,26,28,30,32,34, the welding successively of the order of direction shown in 36 arrows; The transverse row plate up and down long side of 4 No. 13 plates of 4 No. 2 plates of 4 No. 1 plate of the 3rd floor and outer end thereof and No. 2 plate outer ends successively welds by the order of direction shown in 37,39,41,43,45,47,49,38,40,42,44,46,48,50 arrows with the welding of 4 No. 14 plate long sides of adjacent 6 No. 1 plates of the second layer and outer end thereof; The transverse row plate up and down the welding of 4 No. 14 plate long sides of 4 No. 1 plate of the 3rd floor of being adjacent of 4 No. 12 long sides of 6 No. 1 plate of the 4th floor and outer end thereof and 4 No. 2 plates and outer end thereof by the order of direction shown in 51,53,55,57,59,61,63,65,52,54,56,58,60,62,66 arrows successively welding; The welding of 6 No. 1 plate of the 4th floor that 4 No. 11 plate long sides of 4 No. 2 plates of 4 No. 1 plates of layer 5 and outer end thereof and No. 2 plate outer ends are adjacent about the transverse row plate and 4 No. 12 plate long sides of outer end thereof is by the order of direction shown in 67,69,71,73,75,77,79,81,68,70,72,74,76,78,80,82 arrows successively welding; The welding of 4 No. 1 plates of layer 5 up and down, 4 No. 2 plates and 4 No. 11 plate long sides that 2 No. 10 plate two long sides of central authorities No. 1 plate outer end of transverse row 3 No. 1 plates and both sides of plate layer 6 are adjacent is by the order of direction shown in 83,85,87,89,91,93,95,97,84,86,88,90,92,94,96,98 arrows successively welding; The transverse row plate is pressed the welding successively of the order of direction shown in 99,101,100,102,103,105,104,106 arrows with the welding of No. 1 plate outer end, both sides and 4 No. 14 plate inner ends between 6 No. 1 plate ends of the second layer up and down; Transverse row plate up and down 4 No. 1 plate medial end portions of the 3rd floor, No. 1 plate outer end welds by the order of direction shown in 107,109,108,110,111,113,112,114,115,116 arrows priority with the welding of 4 No. 2 plate inner ends, 4 No. 2 plate outer ends and 4 No. 13 plate inner ends; The transverse row plate up and down between 6 No. 1 plate of the 4th floor No. 1 plate outer end in the end and two outsides successively weld by the order of direction shown in 117,119,118,120,121,123,122,124 arrows with the welding of No. 12 plate inner ends; The transverse row plate up and down in the middle of 4 No. 1 plates of layer 5 end, No. 1 plate outer end weld by the order of direction shown in 125,127,129,131,126,128,130,132,133,134 arrows priority with the welding of 4 No. 2 plate inner ends, No. 2 plate outer ends and 4 No. 11 plate inner ends; Between 3 No. 1 plate medial end portions of central authorities' transverse row plate, No. 1 plate outer end, two outsides successively welds by the order of direction shown in 135,136,137,138 arrows with the welding of No. 10 inner ends.

Embodiment 6.

Present embodiment tank volume V=10000M ³, height H=14274mm, jar end diameter of phi=31818mm, tank skin overall diameter Φ=31236mm.Material Q235-AF, Q235A, tank skin steel plate thickness δ=7-18mm, bottom sheets thickness δ=7～9mm.

Material computing formula under the metallic oil tank jar:

First kind of algorithm: when oil tank wall overall diameter Φ is 31236mm,

Girth=(31236+31236 * 15 ‰) * 3.1416

＝(31236+468.54)×3.1416

＝31704.54×3.1416

=99602.98mm (girth)

Second kind of algorithm: when oil tank wall overall diameter Φ is 31236mm,

Girth=31236 * 3.1416 * 0.015+ (31236 * 3.1416)

＝98131.02×0.015+98131.02

＝1471.97+98131.02

=99602.98mm (girth)

Actual blanking diameter at the bottom of the oil tank jar: when girth is 99602.99mm,

Φ＝99602.99÷3.1416+(31350-31236)

＝31704.54+114

＝31818.54mm

15 ‰ is shrinkage factor in the formula.

The first step: earlier with blanking by girth at the bottom of the aforementioned calculation oil tank jar or oil tank jar at the bottom of the diameter blanking, the plate of row shown in pressing numbering, the outermost circumference at the bottom of oil tank be by welding sequence row plate numbering, the ground floor base plate is by vertical row's plate up and down, the centre is the transverse row plate; Vertically ground floor inwardly respectively is provided with No. 20 plates of 2 two right-angle side relative edges for the circular arc limit successively about row's plate from both sides, being followed successively by 2 one edges is No. 19 plates on circular arc limit, 2 one edges are No. 18 plates on circular arc limit, 2 one edges are No. 17 plates on circular arc limit, 2 one edges are No. 16 plates on circular arc limit, 2 one edges are No. 15 plates on circular arc limit, and 2 one edges are No. 14 plates on circular arc limit, and the centre is that 1 one edge is No. 13 plates on circular arc limit; The transverse row plate is middle No. 2 plates that 2 rectangles respectively are set of the second layer up and down, and 2 No. 2 plate outer ends respectively are provided with 1 No. 4 plate, and No. 4 the plate outer end respectively is provided with No. 5 plates that 1 one edge is the circular arc limit; The transverse row plate respectively is provided with 3 No. 1 plates in the 3rd floor centre up and down, and No. 1 plate outer end, two outsides respectively is provided with No. 6 plates that 1 one edge is the circular arc limit; The transverse row plate respectively is provided with 4 No. 1 plates in the 4th floor centre up and down, and No. 1 plate outer end, two outsides respectively is provided with No. 7 plates that 1 one edge is the circular arc limit; The transverse row plate respectively is provided with 3 No. 1 plates in the middle of the layer 5 up and down, and No. 1 plate outer end, two outsides respectively is provided with No. 3 plates of 1 rectangle, and No. 3 the plate outer end respectively is provided with No. 8 plates that 1 one edge is the circular arc limit; The transverse row plate respectively is provided with 4 No. 1 plates in the middle of the layer 6 up and down, and No. 1 plate outer end in two outsides respectively is provided with No. 9 plates that 1 one edge is the circular arc limit; The transverse row plate respectively is provided with 3 No. 1 plates in the middle of the layer 7 up and down, and No. 1 plate outer end in two outsides respectively is provided with No. 3 plates of 2 rectangles, and No. 3 the plate outer end respectively is provided with No. 10 plates that 1 one edge is the circular arc limit; The transverse row plate respectively is provided with 4 No. 1 plates in the 8th floor centre up and down, and No. 1 plate outer end in two outsides respectively is provided with No. 11 plates that 1 one edge is the circular arc limit; Central authorities transverse row plate the 9th floor centre is provided with 3 No. 1 plates, and No. 1 plate outer end in two outsides respectively is provided with 1 No. 3 plate, and No. 3 the plate outer end respectively is provided with No. 12 plates that 1 one edge is the circular arc limit.

The 3rd step, the welding of per two block edge plates and tank shell 1 weld is welded shown in Fig. 7, I partial enlarged drawing shown in Figure 8, promptly No. 4 plate upper plates 2 are being cut sth. askew one with tank shell 1 weld, No. 3 plate lower shoe 3 is cut sth. askew one equally with tank shell 1 weld and No. 4 plate corresponding sections, below No. 4 plate upper plates 2 and No. 3 plate lower shoe 3 places of cutting sth. askew, 6 weldings of a backing plate are set, all margin plates and tank shell 1 weld are all pressed this welding, as Fig. 1, Fig. 7, shown in Figure 8; Weld shown in Fig. 9, II partial enlarged drawing shown in Figure 10 in No. 1 plate of center plate, No. 2 plates and No. 3 plates of margin plate, No. 4 plates, No. 5 plate lap-joints, i.e. No. 2 plate lower shoes 3 and No. 1 plate upper plate 2 overlap joint welding, No. 5 plate upper plates 2 are overlapped on No. 1 plate upper plate 2 top and No. 5 plate upper plate 2 lap-joints are cut sth. askew one, as Fig. 9, shown in Figure 10; The welding of every block edge plate and center plate is by reaching Fig. 3, welding shown in Figure 4 shown in the III partial enlarged drawing shown in Figure 11, all need use angle steel head 4, wedge 5 to fix before the weldering, the lower shoe angle steel head 4 that 63 * 63 * 6 of 1 wide 50mm of welding angle steel is made on plane on the base plate under the jar 3, base plate 3 is cut into oblique wedge 5 contracts with 63 * 63 * 6 * 180 angle steel with jar end upper plate 2 overlap joints after good and goes in the lower shoe angle steel head 4 under jar, with a base plate under the jar 3 and jar end upper plate 2 fixing compacts, when welding wedge 5 places, take down wedge 5, weld again.As shown in Figure 3, Figure 4.

The 4th step, tank bottom welds in proper order, vertical row's plate shown in Figure 16 ground floor margin plate 2 No. 20 plates and adjacent No. 19 plate long side overlap joints welding up and down from both sides, be followed successively by between 2 No. 19 plates and No. 20 plate long sides, long side between 2 No. 18 plates and No. 19 plates, long side between 2 No. 17 plates and No. 18 plates, long side between 2 No. 16 plates and No. 17 plates, long side between 2 No. 15 plates and No. 16 plates, long side between 2 No. 14 plates and No. 15 plates, the welding of long side is by 1 between No. 13 plates and No. 14 plates, 3,5,7,9,11,13,2,4,6,8,10,12, the welding successively of the order of direction shown in 14 arrows; The transverse row plate up and down 4 No. 4 plates in 4 No. 2 plates of the second layer and the outside and No. 4 plate outsides 4 No. 5 plate long sides and vertical row's plate up and down the welding of 4 No. 20 plates of ground floor, 4 No. 18 plates, 4 No. 17 plates, 4 No. 16 plates, 4 No. 15 plates, 4 No. 14 plates and 2 No. 13 plate ends by the order of direction shown in 15,17,19,21,23,25,16,18,20,22,24,26 arrows successively welding; Transverse row plate up and down 4 No. 6 plate long sides of 6 No. 1 plate of the 3rd floor and No. 1 plate end, two outsides successively welds by the order of direction shown in 27,29,31,33,35,28,30,32,34,36 arrows with the welding of 4 No. 2 plates of the transverse row plate second layer, 4 No. 4 plates, 4 No. 5 plate long sides; The transverse row plate up and down 4 No. 7 plate long sides and the transverse row plate of 8 No. 1 plate of the 4th floor and No. 1 end, two outsides 6 No. 1 plates, the welding of 4 No. 6 plate long sides of the 3rd floor successively weld by the order of direction shown in 37,39,41,43,45,38,40,42,44,46 arrows up and down; The transverse row plate up and down 4 No. 8 plate long sides and the transverse row plate of 6 No. 1 plates of layer 5 and No. 1 plate in two outsides, 4 No. 3 plates of No. 1 plate outer end, No. 3 plate outer ends 8 No. 1 plates, the welding of 4 No. 7 plate long sides of the 4th floor successively weld by the order of direction shown in 47,49,51,53,55,57,48,50,52,54,56,58 arrows up and down; The transverse row plate up and down 8 No. 1 plates of layer 6 and No. 1 plate outer end, two outsides 4 No. 9 plate long sides and transverse row plate up and down the welding of 6 No. 1 plates, 4 No. 3 plates and 4 No. 8 plate long sides of layer 5 successively weld by the order of direction shown in 59,61,63,65,67,69,60,62,64,66,68,70 arrows; The transverse row plate up and down 4 No. 3 plates of 6 No. 1 plates of layer 7 and No. 1 plate outer end, two outsides and No. 3 plate outer ends 4 No. 10 plate long sides and transverse row plate up and down the welding of 8 No. 1 plates, 4 No. 9 plate long sides of layer 6 by 71,73,75,77,79,81,83,72,74,76,78,80,82,84, shown in the arrow direction order successively weld; The transverse row plate up and down 4 No. 11 plates and the transverse row plate of 8 No. 1 plate of the 8th floor and No. 1 plate outer end, two outsides 6 No. 1 plates, 4 No. 3 plates, the welding of 4 No. 10 plate long sides of layer 7 are successively welded by the order of direction shown in 85,87,89,91,93,95,86,88,90,92,94,96 arrows up and down; The welding of 8 No. 1 plates of the 8th floor, 4 No. 11 plate long sides is by the order of direction shown in 97,99,101,103,105,107,109,98,100,102,104,106,108,110 arrows successively welding about the transverse row plate of 2 No. 3 plates of central authorities' transverse row 3 No. 1 plates in plate the 9th floor centre and No. 1 plate outer end, two outsides and 2 No. 12 plates of No. 3 plate outer ends and its dual-side; The transverse row plate is 4 No. 2 plate medial end portions of the second layer up and down, No. 2 plate outer ends and 4 No. 4 plate inner ends, the welding of 4 No. 4 plate inner ends and 4 No. 5 plate inner ends is by the order of direction shown in 111,113112,114,115,117,116,118,119,120 arrows successively welding; Between 6 No. 1 plate medial end portions of the 3rd floor, the welding of No. 1 plate outer end, two outsides and 4 No. 6 plate inner ends is by the order of direction shown in 121,123,122,124,125,127,126,128 arrows successively welding up and down for the transverse row plate; The transverse row plate welding of 8 No. 1 plate medial end portions, No. 1 plate outer end, two outsides and 4 No. 7 plate inner ends of the 4th floor up and down successively welds by the order of direction shown in 129,131,133,135,137,138,130,132,134,136 arrows; The transverse row plate up and down between 6 No. 1 plate medial end portions of layer 5, No. 1 plate outer end, two outsides welds by the order of direction shown in 139,141,143,145,147,149,140,142,144,146,148,150 arrows priority with the welding of 4 No. 3 plate inner ends, No. 3 plate outer ends and 4 No. 8 plate inner ends; The transverse row plate up and down between 8 No. 1 plate medial end portions of layer 6, No. 1 plate outer end, two outsides successively welds by the order of direction shown in 151,153,155,157,159,160,152,154,156,158 arrows with the welding of 4 No. 9 plate inner ends; The transverse row plate up and down between 6 No. 1 plate medial end portions of layer 7, No. 1 plate outer end, two outsides welds by the order of direction shown in 161,163,165,167,169,171,162,164,166,168,170,172 arrows priority with the welding of 4 No. 3 plate inner ends, No. 3 plate outer ends and 4 No. 10 plate inner ends; The transverse row plate up and down between 8 No. 1 plate medial end portions of the 8th floor, No. 1 plate outer end, two outsides successively welds by the order of direction shown in 173,175,177,179,181,182,174,176,178,180 arrows with the welding of 4 No. 11 plate inner ends; Between 3 No. 1 plate medial end portions of transverse row plate the 9th floor, the welding of No. 1 plate outer end, two outsides and 2 No. 3 plate inner ends, 2 No. 3 plate outer ends and 2 No. 12 plate inner ends is by the order of direction shown in 183,184,185,186187,188 arrows successively welding.

Claims

1, a kind of metal oil tank production method comprises tank skin (1), jar end upper plate (2), jar beneath base plate (3), angle steel head (4), wedge (5), backing plate (6), and it is characterized in that: described method comprises that the following step poly-:

3) tank bottom welds in proper order, two No. 5 plates and No. 4 plate side overlap joints of upper and lower vertical row's plate, two No. 4 plates and No. 3 middle plate sides overlap joints, welding sequence is that two No. 5 plates and No. 4 plate lap-joints successively weld by the order of direction shown in 1,3,2,4 arrows, and two No. 4 plates and No. 3 plates overlap joints are punished the order of direction shown in 5,7,6,8 arrows and successively welded; 4 No. 5 plates of upper and lower vertical row's plate are pressed the welding successively of the order of direction shown in 9,10 arrows with 4 No. 6 plate sides of No. 1 plate both ends overlap joint respectively; 4 No. 4 plates and 2 No. 3 plates of upper and lower vertical row's plate are pressed the welding successively of the order of direction shown in 11,13,15,12,14,16 arrows with its No. 1 plate outer side edges overlap joint at the end overlap joint respectively; 2 No. 1 plate inner side edges and successively weld by the order of direction shown in 17,19,21,23,18,20,22,24 the arrow with 2 No. 2 plate dual-sides with 4 No. 6 plate inner side edges of No. 1 plate end overlap joint, 2 No. 1 plate ends and 4 No. 6 plate inner ends overlap joints are by the order of direction shown in 25,27,26,28 arrows successively welding, and overlap joint welds in proper order by direction shown in last 29 arrows in the middle of 2 No. 2 plates.

2, metal oil tank production method according to claim 1 is characterized in that: be trapezoidal overlapping the slot between the both sides listrium of described jar Bottom Edge Board and tank shell welding position, and leave the 9mm gap; The weld of margin plate and tank shell is a circular arc.

3, metal oil tank production method according to claim 2 is characterized in that: before described tank bottom and the tank shell weldering knot at per two backing plates (6) of 15 * 50 * 300mm of spot welding under the base plates of overlap joint mutually, with two base plates location of overlap joint mutually.

4, metal oil tank production method according to claim 1, it is characterized in that: when the weld seam of 2 base plates of described mutual overlap joint welds, the lower shoe angle steel head (4) that 50 * 50 * 5 of 1 wide 50mm of welding angle steel is made on the last plane of base plate under the jar (3), base plate (3) is gone into wedge (5) contract in the lower shoe angle steel head (4) after overlapping well with a jar end upper plate (2) under the jar, with a base plate under the jar (3) and jar end upper plate (a 2) fixing compact, weld wedge (5) when locating, take down wedge (5), weld again.

5, according to claim 1 or 4 described metal oil tank production methods, tool is characterised in that: described distance between the every adjacent two angle steel heads (4) on the weld seam in length and breadth is 800mm.

6, metal oil tank production method according to claim 1 is characterized in that: described 4 No. 5 margin plates are swing link; Surplus 2 No. 3 plates, 4 No. 4 plates, 4 No. 6 plates, 2 No. 2 plates with the tank shell welding of tool are fanning strip.