CN116663118A - Calculation method for storage quantity of V-shaped stock yard of stock yard - Google Patents
Calculation method for storage quantity of V-shaped stock yard of stock yard Download PDFInfo
- Publication number
- CN116663118A CN116663118A CN202310655932.9A CN202310655932A CN116663118A CN 116663118 A CN116663118 A CN 116663118A CN 202310655932 A CN202310655932 A CN 202310655932A CN 116663118 A CN116663118 A CN 116663118A
- Authority
- CN
- China
- Prior art keywords
- stock
- total
- yard
- stock yard
- shaped
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004364 calculation method Methods 0.000 title claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 131
- 238000004519 manufacturing process Methods 0.000 claims abstract description 28
- 238000013461 design Methods 0.000 claims abstract description 21
- 238000013178 mathematical model Methods 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000012545 processing Methods 0.000 claims abstract description 9
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 8
- 239000010959 steel Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 11
- VKYKSIONXSXAKP-UHFFFAOYSA-N hexamethylenetetramine Chemical compound C1N(C2)CN3CN1CN2C3 VKYKSIONXSXAKP-UHFFFAOYSA-N 0.000 claims 1
- 238000007726 management method Methods 0.000 abstract description 10
- 230000008093 supporting effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005192 partition Methods 0.000 description 16
- 238000004458 analytical method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/13—Architectural design, e.g. computer-aided architectural design [CAAD] related to design of buildings, bridges, landscapes, production plants or roads
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
- G06F17/10—Complex mathematical operations
- G06F17/11—Complex mathematical operations for solving equations, e.g. nonlinear equations, general mathematical optimization problems
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Computational Mathematics (AREA)
- Computer Hardware Design (AREA)
- Mathematical Analysis (AREA)
- Pure & Applied Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Evolutionary Computation (AREA)
- Civil Engineering (AREA)
- Architecture (AREA)
- Operations Research (AREA)
- Algebra (AREA)
- Structural Engineering (AREA)
- Databases & Information Systems (AREA)
- Software Systems (AREA)
- General Factory Administration (AREA)
Abstract
The invention relates to a calculation method of storage quantity of a V-shaped stock yard of a stock yard, and belongs to the technical field of stock management methods of stock yards. The technical scheme of the invention is as follows: establishing a mathematical model for calculating the storage quantity of a V-shaped stock yard of a stock yard; collecting basic conditions, the number of varieties of materials used and characteristics of a steel raw material field; analyzing and processing the data, and setting necessary maneuvering goods positions according to the actual production and formulating the pile number, reasonable inventory and specific placement positions of each variety; calculating the maximum mass and the operable mass of the storable material; further adjustment is carried out according to the actual production condition. The beneficial effects of the invention are as follows: a negative linear relation mathematical model of the maximum stock volume of the stock yard and the total stock yard pile number is found and established, so that a convenient, quick and practical calculation method conforming to production practice is provided for stock yard stock management and preliminary design, a powerful supporting effect is achieved for production stock management and stock yard preliminary design, and popularization can be carried out in stock yards of the same type.
Description
Technical Field
The invention relates to a calculation method of storage quantity of a V-shaped stock yard of a stock yard, and belongs to the technical field of stock management methods of stock yards.
Background
The raw material yard is responsible for the working tasks of unloading, storing, processing, conveying and the like of materials in the working procedures of blast furnace, sintering, coking and the like, and the maximum storage quantity index of the raw material yard is used for calculating the geometric total volume of all the material piles according to the material pile size and the material pile number determined in engineering design, and calculating the total capacity and the total tonnage according to the geometric total volume.
The V-shaped material field is a new arrangement mode after the C-shaped material field and the B-shaped material field, the V-shaped material field is the deformation of the C-shaped material field, the investment of the V-shaped material field is reduced relative to the C-shaped material field, the operation is flexible, the storage capacity per unit area is large relative to the B-shaped material field, the same storage capacity can save the land, the advantage of adopting the V-shaped material field is more obvious in the area with the shortage of land and the expensive land, the initial investment is increased due to the large concrete quantity of the C-shaped material field, the investment is increased along with the increase of the number of grooves, the part of investment is reduced after the V-shaped material field is deformed, the material arrangement is flexible under the condition of the same number of grooves, and the investment cost and income need to be comprehensively measured and calculated. The design yard is insufficient in material pile number consideration in the design of a raw material yard, the operation experience of the V-shaped material yard is insufficient, the operation coefficient of 0.75 is only utilized, the storage capacity of the material yard is obtained, the storage capacity and the actual storage capacity are greatly deviated, the number of days of material storage cannot meet the design requirement, misguidance is generated for production command, under the condition of investment of the material yard in compression and reduction, even the primary design of the raw material yard is influenced, the storage capacity cannot reach the safety stock because of low storage capacity, the requirement of the number of varieties cannot be met because of small slots, the forced reduction of varieties is caused, the purchase cost is increased, the small-grade materials and the returned materials in factories cannot be stored, the bottom laying digestion is adopted, the quality of mixed materials is influenced, and the harm is caused to production.
The V-shaped material yard is the same as the C-shaped material yard in adopting a mine unloading car arranged at the top to unload and stack materials, and a half-gate type scraper reclaimer or a gate type scraper reclaimer can be adopted to take out and feed materials.
The V-shaped material yard adopting the semi-portal scraper reclaimer is formed by capping two material strips, the retaining wall of the C-shaped material yard is canceled between the two material strips, and only the upright posts are arranged, and the partition walls are added in the section direction of the material pile, so that the height of the material pile and the number of the material pile varieties are greatly improved, the maximum pile height can reach about 30m, the plane layout of the V-shaped material yard is shown in figure 1, and the process section view is shown in figure 2. The main process facilities comprise: a material strip, a piling and adhesive tape machine, a unloading car for unloading (piling), a scraper reclaimer, an adhesive tape machine and the like. The unloading car and the input tape machine are arranged on a platform at the top of the material strips, each material strip is input by one tape machine and is provided with an unloading car for unloading and stacking, and each material strip is taken out by the corresponding scraper reclaimer during material taking.
Disclosure of Invention
The invention aims to provide a calculation method of the storage quantity of a raw material yard V-shaped material yard, which combines the analysis and calculation of one material pile and two material piles stored in one V-shaped lattice and the analysis and calculation of one material strip and one material yard by combining the actual extension of production, discovers and establishes a mathematical model of the negative linear relation of the maximum volume of the storable material of the material yard and the total pile quantity of the material yard, thereby providing a convenient, quick and practical calculation method which accords with the actual production for stock management and preliminary design of the material yard, playing a powerful supporting role for the stock management and the preliminary design of the material yard, being capable of being popularized in the same type of material yard and effectively solving the problems in the background technology.
The technical scheme of the invention is as follows: a calculation method of the storage quantity of a V-shaped stock yard of a stock yard comprises the following steps: (1) Establishing a mathematical model for calculating the storage quantity of a V-shaped stock yard of a stock yard; (2) Collecting basic conditions, the number of varieties of materials used and characteristics of a steel raw material field; (3) Analyzing and processing the data, and setting necessary maneuvering goods positions according to the actual production and formulating the pile number, reasonable inventory and specific placement positions of each variety; (4) calculating the maximum mass and the operable mass of the storable material; and (5) further adjusting according to the actual production condition.
In the step (1), a mathematical model between the maximum volume of the stock bars which can be stored and the stock yard material pile number is established, and after the primary design of a V-shaped stock yard is completed, the normal stock pile width, height, pile spacing, the number of the stock bars, the total length of the stock bars and the number of V-shaped grids of each stock bar are determined as constants, and the unique variable is the total number of the stock piles;
the calculation formula is as follows: let constant e=sl Total (S) +15(2V S +st), constant f= (2V S +ST),
V Total (S) ＝E-F N Total (S)
When N is Total (S) When not less than 15, V Total (S) And N Total (S) In negative linear correlation, when N Total (S) When=1 to 15, V Total (S) Maximum, when N Total (S) when=e/F, V Total (S) =0; when N is Total (S) And when the number of piles is not less than 15, the storage volume is reduced along with the increase of the number of piles, and when the number of piles reaches a certain value, the storage volume is zeroed, namely all the material strips become the pile spacing.
In the step (3), the stock yard stock basic pile number is determined according to the production operation principle through collecting field data and analyzing and processing.
In the step (5), parameters are further adjusted according to requirements, so that theoretical calculation is more practical.
The beneficial effects of the invention are as follows: through the analysis and calculation of one material pile and two material piles stored in one V-shaped grid, the analysis and calculation of one material strip and one material yard are combined with the actual production extension, a negative linear relation mathematical model of the maximum volume of the material yard and the total pile number of the material yard is found and established, so that a convenient, fast and practical calculation method conforming to the actual production is provided for stock management and preliminary design of the material yard, a powerful supporting effect is achieved for the stock management and the preliminary design of the material yard, and the method can be popularized in the same type of material yard.
Drawings
FIG. 1 is a plan view of a stock yard V-shaped stock yard of the present invention;
FIG. 2 is a cross-sectional view of a process in a stock yard V-shaped stock yard according to the present invention;
FIG. 3 is a schematic cross-sectional view of a stockpile according to the present invention;
FIG. 4 is a schematic cross-sectional view of a single-sided material stack of the present invention;
FIG. 5 is a schematic view of the volume V-end of a single-sided stack according to the present invention;
FIG. 6 shows the volume V above the horizontal plane of the single-sided stockpile head of the present invention Upper part A schematic diagram;
FIG. 7 shows the volume V below the horizontal plane of the single-sided stockpile head of the present invention Lower part(s) A schematic diagram;
FIG. 8 is a graph showing the negative linear relationship between the maximum storable material volume of a steel yard and the total stacking number of bars according to an embodiment of the present invention;
in the figure: b-pile width (m) alpha-material stacking angle (°)
b 1 -distance (m) b of the discharge point from the edge of the intermediate wall 2 -distance (m) of the discharge point from the bottom edge of the pile
Beta-floor tilt angle (°) L-pile length (m)
h 1 -height above the level of the pile (m) h 2 -height below the level of the pile (m)
S 1 -area above the horizontal plane of the pile cross section (m 2 )S 2 -area below the horizontal plane of the pile cross section (m 2 )；
In fig. 8, the horizontal axis represents the total number of stacks of the material strips, and the vertical axis represents the maximum volume (ten thousand m 3) of the material strips which can be stored.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments, and it is apparent that the described embodiments are a small part of the embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
A calculation method of the storage quantity of a V-shaped stock yard of a stock yard comprises the following steps: (1) Establishing a mathematical model for calculating the storage quantity of a V-shaped stock yard of a stock yard; (2) Collecting basic conditions, the number of varieties of materials used and characteristics of a steel raw material field; (3) Analyzing and processing the data, and setting necessary maneuvering goods positions according to the actual production and formulating the pile number, reasonable inventory and specific placement positions of each variety; (4) calculating the maximum mass and the operable mass of the storable material; and (5) further adjusting according to the actual production condition.
In the step (1), a mathematical model between the maximum volume of the stock bars which can be stored and the stock yard material pile number is established, and after the primary design of a V-shaped stock yard is completed, the normal stock pile width, height, pile spacing, the number of the stock bars, the total length of the stock bars and the number of V-shaped grids of each stock bar are determined as constants, and the unique variable is the total number of the stock piles;
the calculation formula is as follows: let constant e=sl Total (S) +15(2V S +st), constant f= (2V S +ST),
V Total (S) ＝E-F N Total (S)
When N is Total (S) When not less than 15, V Total (S) And N Total (S) In negative linear correlation, when N Total (S) When=1 to 15, V Total (S) Maximum, when N Total (S) when=e/F, V Total (S) =0; when N is Total (S) And when the number of piles is not less than 15, the storage volume is reduced along with the increase of the number of piles, and when the number of piles reaches a certain value, the storage volume is zeroed, namely all the material strips become the pile spacing.
In the step (3), the stock yard stock basic pile number is determined according to the production operation principle through collecting field data and analyzing and processing.
In the step (5), parameters are further adjusted according to requirements, so that theoretical calculation is more practical.
In practical application, the invention comprises the following steps:
the first step: establishing a mathematical model for calculating the storage quantity of the V-shaped stock yard of the stock yard:
1. calculating the sectional area of a material pile
Because the V-shaped material field is the deformation of the C-shaped material field, the retaining walls of the two material strips are canceled in the design, so that the two material strips are changed into one material strip, the cross section of the material pile of the V-shaped material field is formed by combining the cross sections of the two C-shaped material piles, is bilaterally symmetrical, and is calculated from a single-side cross section.
Let the stack cross-sectional area be S, as can be seen from fig. 4:
S＝2*(S 1 +S 2 )
S 1 ＝1/2[(b 1 +B)h 1 -b 1 2 tanα]
S 2 ＝1/2B 2 tanβ
S＝2*(S 1 +S 2 )＝[(b 1 +B)h 1 -b 1 2 tanα]+B 2 tanβ
2. calculating the volume of the end of the material pile
When the dump truck piles up materials and falls down, the air resistance is ignored, the materials can be piled up automatically under the action of gravity and the internal friction of the materials,
the V-shaped material yard can be regarded as an abnormal cone under the constraint of the basic bearing surface and the adjacent material piles, and the shape of the V-shaped material yard needs to meet certain boundary conditions. The volume of the material pile is related to the position of the blanking point, the material stacking angle, the blanking point interval, the shape of the basic bearing surface and the like, when one V-shaped lattice stores one pile of materials, the section extends in the length direction, when two piles of materials are stored, two ends and between piles appear, and the volume of the material pile ends is V End of the device The volume schematic diagram of the single-side end is shown in figure 5, and is divided into an upper part and a lower part by taking the X-axis horizontal plane as a boundary, and is marked as V Upper part And V Lower part(s) 。
V End of the device ＝2*(V Upper part +V Lower part(s) )
Volume V Upper part The schematic diagram is shown in fig. 6.
Volume V Upper part Equal to one half of a large cone (height h 1 Bottom radius b of pile 2 Is a cone of (2) the volume minus one quarter of the small cone (height h) 1 -b 1 tan alpha bottom radius b 2 -b 1 Conical) volume.
V Upper part ＝1/2*1/3πb 2 2 h 1 -1/4*1/3π(b 2 -b 1 )2(h 1 -b 1 tanα)
Volume V Lower part(s) The schematic diagram is shown in fig. 7.
V Lower part(s) ＝1/2h 2 (b 1 +b 2 )b 2 (1+tanβ/tanα)f v
F in v -a stockpile volume correction factor.
When the materials are piled up, a cone is formed, and the shape of the material pile is a non-normal cone due to the negative 10 degrees at the bottom of the pile. If the volume of the material pile below the horizontal plane is accurately calculated, double integration is needed, and in actual production, the arc-shaped outer notch is basically filled up through the operation of the scraper reclaimer below the horizontal plane, and the extension of the triangle in the length direction is approximate. Therefore, the volume is calculated in a way of multiplying the triangular section by the length, and in order to reduce the error, a pile volume correction coefficient fv is introduced, and the coefficient can be selected from 0.7 to 0.95 during calculation. The gap filling takes small values less and takes large values more.
V End of the device ＝2*(V Upper part +V Lower part(s) )＝2*1/2*1/3πb 2 2 h 1 -2*1/4*1/3π(b 2 -b 1 ) 2 (h 1 -b 1 tanα)
+2*1/2h 2 (b 1 +b 2 )b 2 (1+tanβ/tanα)f v ＝1/3πb 2 2 h 1 -1/2*1/3π(b 2 -b 1 ) 2 (h 1 -b 1 tanα)+h 2 (b 1 +b 2 )b 2 (1+tanβ/tanα)f v
3. Calculating the volume loss of a stack of C-shaped grids
When one C-shaped grid holds two stacks of material, the stack spacing and the amount of both ends relative to the full volume will be lost.
One end lost volume:
V S ＝V-V end of the device ＝S b 2 -{1/3πb 2 2 h 1 -1/2*1/3π(b 2 -b 1 ) 2 (h 1 -b 1 tanα)+h 2 (b 1 +b 2 )
b 2 (1+tanβ/tanα)f v }
＝{[(b 1 +B)h 1 -b 1 2 tanα]+B 2 tanβ}b 2 -{1/3πb 2 2 h 1 -1/2*1/3π(b 2 -b 1 ) 2 (h 1 -b 1 tanα)+h 2 (b 1 +b 2 )b 2 (1+tanβ/tanα)f v }
Volume loss of two stacks is deposited to a C check:
V pile S ＝2V S +ST
T-pile spacing (requirement of ensuring that two piles are not mixed in a cross manner)
4. Establishing a mathematical model of the storage quantity of a V-shaped stock ground
The design of the V-shaped stock ground is completed, the number and the length of each material bar are fixed, the stock ground of the new area of the county is divided into four material bars, 8 bars of A, B material bars and 7 bars of C, D material bars, and 15 bars are all arranged. When the number of the material piles exceeds the number of the grids, the condition that one grid stores two piles, even three piles, occurs.
A. B, C, D the stock-storable length of the strip is L AB 、L CD The volume is calculated according to the complete cross-sectional shape and is marked as V ABW 、V CDW . The number of the stockpiles is N AB 、N CD Stack spacing T.
Taking A, B strips as an example, N AB The number of piles is N AB -8. When N is AB When the weight is less than or equal to 8, each grid can be ensured to store a stack; when 8<N A When the number of the storage boxes is less than or equal to 16, two stacking conditions of one grid storage are generated; when 16<N A When the number of the storage boxes is less than or equal to 24, three stacking situations of one grid storage occur. The partition wall ensures sufficient height, otherwise the stack cannot approach the partition wall, which can cause reserve loss. The length of the V-shaped lattice must ensure a certain length-width ratio i, when i is more than or equal to 1, one stack can be stored, when i is more than or equal to 2, two stacks can be stored, when i is more than or equal to 4, three stacks can be stored, and when i is more than or equal to 6, four stacks can be stored. Otherwise, not only is the stack spacing and the reserve loss of the end heads caused, but also the reserve loss caused by the limited stack height occurs. In addition, e.g.The fruit partition wall cannot ensure enough height, and a stacking point cannot be close to the partition wall, so that reserve loss can be caused, and the previous conditions need to consider the distance between the stacking point and the partition wall. This factor is therefore taken into account when designing the V-shaped grid, while the grid length is designed as required in connection with the actual material consumption. Otherwise, the effective function cannot be exerted, resulting in a large loss of reserves.
One V-shaped grid stores the volume loss of two stacks (each additional stack):
V pile S ＝2V S +ST
Maximum volume of the AB material strip capable of storing materials:
V AB ＝V ABW -(N AB -8)V pile S ＝SL AB -(N AB -8)(2V S +ST)＝SL AB -N AB (2V S +ST)+8(2V S +ST)＝SL AB +8(2V S +ST)-(2V S +ST)N AB
Maximum volume of storable material of four strips is the same:
V total (S) ＝V AB +V CD ＝SL AB +8(2V S +ST)-(2V S +ST)N AB +SL CD +7(2V S +ST)-(2V S +ST)N CD ＝S(L AB +L CD )+15(2V S +ST)-(2V S +ST)(N AB +N CD )＝SL Total (S) -(2V S +ST)(N Total (S) -15)＝SL Total (S) +15(2V S +ST)-(2V S +ST)N Total (S)
L Total (S) ＝L AB +L CD N Total (S) ＝N AB +N CD
When the primary design of a V-shaped material field is finished, the width, height, stack spacing, number of material bars, total length of material bars and number of V-shaped grids of each material bar can be basically determined as constants, and the only variable is the total number of material piles.
Let constant e=sl Total (S) +15(2V S +st), constant f= (2V S +ST),
V Total (S) ＝E-F N Total (S)
This equation is typically binary oneSecondary equation, when N Total (S) When not less than 15, V Total (S) And N Total (S) In negative linear correlation, when N Total (S) When=1 to 15, V Total (S) Maximum, when N Total (S) when=e/F, V Total (S) =0. When N is Total (S) When the stacking number is increased, the storage volume is reduced, and when the stacking number reaches a certain value, the storage volume is zeroed, which means that all the material strips become the stacking distance.
Taking a new district stock yard of Handa county as an example, b=26.83 m, h=17.78 m, l Total (S) ＝560m，M＝4，T＝3m，α＝37 0 ，β＝10 0 ，b 1 ＝7.7m，b 2 ＝19.13m，h 1 ＝14.41m，h 2 ＝4.73m，f v ＝0.9V Total (S) ＝SL Total (S) -(2V S +ST)(N Total (S) -15)＝579.2476*560-(6907.54+1737.7428)(N Total (S) -15)＝324378.656-8645.2828(N Total (S) -15)＝454057.898-8645.2828N Total (S)
S＝2*(S 1 +S 2 )＝[(b 1 +B)h 1 -b 1 2 tanα]+B 2 tanβ＝[(7.7+26.83)*14.41-7.7 2 tan37 0 ]+26.83 2 tan10 0 ＝452.3188+126.9288＝579.2476
V S ＝V-V End of the device ＝S b 2 -{1/3πb 2 2 h 1 -1/2*1/3π(b 2 -b 1 ) 2 (h 1 -b 1 tanα)+h 2 (b 1 +b 2 )b 2 (1+tanβ/tanα)f v }＝579.2476*19.13-(5519.5328-588.5108+2696.2146)＝11081.0066-7627.2366＝3453.76999
| Total number of stockpiles | Maximum storable volume (ten thousand m) 3 ) |
| 0 | 32.4379 |
| 10 | 32.4379 |
| 15 | 32.4379 |
| 20 | 28.1152 |
| 30 | 19.4699 |
| 40 | 10.8247 |
| 50 | 2.1793 |
| 52.52 | 0 |
And a second step of: collecting basic conditions, the number of varieties of materials used and characteristics of a steel stock yard.
According to the current varieties of the materials used for the Handrail steel, the statistics are as follows:
the number of varieties of raw material yards in the county new area is 15 in total before pellet production. The pellet is expected to increase by 3 varieties after production.
And a third step of: analyzing and processing the data, and making the pile number of each variety, reasonable inventory, specific placement position and setting necessary maneuvering goods positions according to production practice.
According to the double-pile double-taking principle, the number of piles is 15 in a new-region stock yard of the steel county, in order to prevent the coexistence of new and old varieties in the replacement process of the feeding varieties and avoid influencing unloading operation, each material strip is provided with a motorized goods space, in order to reduce the number of piles, small-variety manganese ores and silica stones are stored in a secondary stock yard, iron sheets and high-aluminum straight-feeding secondary stock yards are paved, undersize powder is directly fed into a proportioning bin, and the total number of piles is limited to 15.
The maximum volume of the storable material is 32.4379 ten thousand m calculated by a formula 3 。
Fourth step: and calculating the maximum mass and the operable mass of the storable material.
Average bulk density of 2.0 ton/m 3 The maximum mass of the storable material is:
Q big size = 32.4379X2 = 64.8758 ten thousand tons.
The operating coefficient is 0.75, and the storage operable quality:
Q make 1 = 64.8758X0.75 = 48.6569 ten thousand tons.
The above is that the partition wall has enough height, the distance between the stockpiles and the partition wall can not be 11.16 m, the reserve loss can be caused because the stockyard in the new county area is only 6 m above the zero point of the partition wall, in order to save engineering construction funds, according to the previous algorithm,
V wall damage ＝11.16S-(V Upper part +V Lower part(s) )＝11.16S-[1/2*1/3πh 1 (B-b 1 ) 2 -1/2*1/3π6(B-b 1 -11.16) 2 +2*1/2Bh 2 *11.16f v ]＝11.16*579.2476-[2759.77-199.46+1274.64]＝6464.4-3834.95＝2629.45
Two ends are divided into four partition walls, the material loss is equal to the end volume loss, 4V S ＝4*3453.76999＝13815.08
The partition wall loss volume of each V-shaped lattice is 5258.9m 3 The maximum volume of storable material is 324379-13 x 2629.45-13815.08 = 276381.07 =27.64 ten thousand m 3 Total loss of 4.7979 km 3 。
The length of the V-shaped lattice must ensure a certain length-width ratio i, when i is more than or equal to 1, one stack can be stored, when i is more than or equal to 2, two stacks can be stored, when i is more than or equal to 4, three stacks can be stored, and when i is more than or equal to 6, four stacks can be stored. Otherwise, not only is the stack spacing and the reserve loss of the end heads caused, but also the reserve loss caused by the limited stack height occurs. In addition, if the partition wall cannot be secured with a sufficient height, the stacking point cannot be close to the partition wall, which may cause a loss of reserves, the former condition needs to consider the amount of the stacking point from the partition wall.
The raw material yard in the new county is 15V-shaped grids, the shortest grid is 29.2 meters, the longest grid is 48.2 meters, the length-width ratio is 1.09 and the length-width ratio is 1.796 respectively, and even though the influence of the height of a partition wall is not considered, the condition that one grid stores two piles is not met. Otherwise, the inventory will drop significantly due to stack height limitations. Under the limitation of the condition, the situation that one variety is stored in one grid is necessary.
Therefore, in the case of storing one variety by one stack in one grid, the maximum volume of storable materials is 27.64 ten thousand m 3 。
Average bulk density of 2.0 ton/m 3 The maximum mass of the storable material is:
Q big size = 27.64X2 =55.28 ten thousand tons.
The operating coefficient is 0.75, and the operable quality is stored:
Q make 1 = 55.28X0.75 =41.46 ten thousand tons.
The data is close to 40 ten thousand tons of actual maximum stock of daily operation, and is larger in difference between the maximum 65 ten thousand tons and the maximum 50 ten thousand tons of operation reserve provided by the primary design. Therefore, it is necessary to consider the material variety and the number of piles, as well as the partition wall height and the number of bins. The algorithm has a certain guiding effect on production operation. The preliminary design of the stock ground can be supported to a certain extent. For the stock yard layout option, the number of days of storage available, a basic framework is established.
Fifth step: further adjustments are required depending on the actual production.
At an average bulk specific gravity of 2.0 ton/m 3 Stacking angle 37 0 Establishing a model for reference, and actually producing storage materialsThe variety proportion is high or low, the adjustment is not accurate enough only according to the number of piles, specific accounting is needed for obtaining accurate data, and even inventory measures are adopted.
According to the invention, basic theoretical knowledge is utilized, and a negative linear relation mathematical model of the maximum stock storage volume of the stock yard and the total stack number of the stock yard is found and established by analyzing and calculating one stock pile and two stock piles in a V-shaped lattice and combining with the analysis and calculation of one stock strip and one stock yard in production actual extension, so that a convenient, quick and practical calculation method conforming to production actual is provided for stock management and primary design of the stock yard, a powerful supporting effect is provided for production stock management and stock yard primary design, and the method can be popularized in the stock yard of the same type.
Claims (4)
1. The method for calculating the storage quantity of the V-shaped stock yard of the stock yard is characterized by comprising the following steps of: (1) Establishing a mathematical model for calculating the storage quantity of a V-shaped stock yard of a stock yard; (2) Collecting basic conditions, the number of varieties of materials used and characteristics of a steel raw material field; (3) Analyzing and processing the data, and setting necessary maneuvering goods positions according to the actual production and formulating the pile number, reasonable inventory and specific placement positions of each variety; (4) calculating the maximum mass and the operable mass of the storable material; and (5) further adjusting according to the actual production condition.
2. The method for calculating the stock quantity of the stock yard V-shaped stock yard according to claim 1, wherein: in the step (1), a mathematical model between the maximum volume of the stock bars which can be stored and the stock yard material pile number is established, and after the primary design of a V-shaped stock yard is completed, the normal stock pile width, height, pile spacing, the number of the stock bars, the total length of the stock bars and the number of V-shaped grids of each stock bar are determined as constants, and the unique variable is the total number of the stock piles;
the calculation formula is as follows: let constant e=sl Total (S) +15(2 V S +st), constant f= (2V S +ST),
V Total (S) =E-F N Total (S)
When N is Total (S) When not less than 15, V Total (S) And N Total (S) In a negative linear formIn relation to, when N Total (S) When=1 to 15, V Total (S) Maximum, when N Total (S) when=e/F, V Total (S) =0; when N is Total (S) And when the number of piles is not less than 15, the storage volume is reduced along with the increase of the number of piles, and when the number of piles reaches a certain value, the storage volume is zeroed, namely all the material strips become the pile spacing.
3. The method for calculating the stock quantity of the stock yard V-shaped stock yard according to claim 1, wherein: in the step (3), the stock yard stock basic pile number is determined according to the production operation principle through collecting field data and analyzing and processing.
4. The method for calculating the stock quantity of the stock yard V-shaped stock yard according to claim 1, wherein: in the step (5), parameters are further adjusted according to requirements, so that theoretical calculation is more practical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310655932.9A CN116663118A (en) | 2023-06-05 | 2023-06-05 | Calculation method for storage quantity of V-shaped stock yard of stock yard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310655932.9A CN116663118A (en) | 2023-06-05 | 2023-06-05 | Calculation method for storage quantity of V-shaped stock yard of stock yard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116663118A true CN116663118A (en) | 2023-08-29 |
Family
ID=87718695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310655932.9A Pending CN116663118A (en) | 2023-06-05 | 2023-06-05 | Calculation method for storage quantity of V-shaped stock yard of stock yard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116663118A (en) |
-
2023
- 2023-06-05 CN CN202310655932.9A patent/CN116663118A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101929799B (en) | Device and method for controlling discharge of sintering bunker group | |
| KR20090056054A (en) | Stacker and reclaimer and stacking method for iron and steel raw material | |
| CN116663118A (en) | Calculation method for storage quantity of V-shaped stock yard of stock yard | |
| CN109944592B (en) | Method for designing height of throwing blasting step in dragline dump process | |
| CN113392503B (en) | Method for calculating storage capacity of B-type stock yard of stock yard | |
| CN114970098A (en) | Method for calculating storage capacity of C-shaped stock yard by using mathematical model | |
| KR100722382B1 (en) | Method of piling up the blending ore using a stacker | |
| CN214650671U (en) | Steel grating type lining blanking funnel | |
| CN210047977U (en) | Movable type stacking system | |
| CN209922449U (en) | Rectangular raw material warehouse | |
| CN201686702U (en) | Feeding device for blast furnace ore and coke groove system | |
| CN111989411B (en) | Method for charging raw material into blast furnace | |
| CN111498519A (en) | Ore and waste stone double-chute device of skip inclined shaft | |
| CN112791836A (en) | Air locking feeding device of vertical mill | |
| CN215797165U (en) | Distribution system capable of measuring weight of materials in storage bin | |
| CN210913753U (en) | Wear-resisting massive material unloading funnel | |
| JP3760639B2 (en) | Method of blending ultrafine coke into sintering material | |
| CN212531284U (en) | Material distribution device of belt conveyor for blast furnace smelting | |
| CN102951455A (en) | Stockpiling method of petroleum cokes | |
| CN105331375A (en) | Automatic coal charging method and device for coke oven | |
| CN218641668U (en) | Outer telescopic wear-resistant discharging device of ore tank for automobile | |
| CN212126234U (en) | Middle material accumulation hopper applied to sandstone aggregate production | |
| CN116182567A (en) | Feed hopper of circular cooler | |
| CN214691946U (en) | Semi coke discharging and sliding material and buffer device | |
| JP2019018970A (en) | Method for loading/unloading an iron-making material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |