CN201635457U - Coal yard structure capable of reducing project cost of closed-type circular coal yard - Google Patents
Coal yard structure capable of reducing project cost of closed-type circular coal yard Download PDFInfo
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- CN201635457U CN201635457U CN2010201109583U CN201020110958U CN201635457U CN 201635457 U CN201635457 U CN 201635457U CN 2010201109583 U CN2010201109583 U CN 2010201109583U CN 201020110958 U CN201020110958 U CN 201020110958U CN 201635457 U CN201635457 U CN 201635457U
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Abstract
A coal yard structure capable of reducing project cost of a closed-type circular coal yard includes coal-retaining walls, and a roof grid structure on the coal coal-retaining walls, wherein the height of each coal-retaining wall is less than 18m, but larger than or equal to 0 meter; the diameter of the circular bottom surrounded by the coal-retaining walls is larger than 120m, but less than or equal to 163m; the heights of both the coal-retaining walls and the roof grid structure of the coal-retraining walls are 60m. By increasing the diameter of the coal yard and reducing the height of the biggest coal pile for the coal-retaining walls, the coal yard structure can reduce the pressure on the coal piling sides of the coal-retaining walls, so as to reduce the work amount of the coal-retaining walls and the process cost of the foundation and lower the civil work amount of the closed coal yard.
Description
Technical field
The utility model relates to a kind of coal yard structure that can reduce closed circular coal yard construction costs, and it realizes reducing the purpose of construction costs by the closed circular coal yard structure scheme of enlarged.
Background technology
The sealing coal yard is the general designation of the coal-fired storage facility of coal-fired station, comprises coal yard plant equipment and civil engineering two parts.The coal yard plant equipment is mainly formed (being generally the national standard structural member) by the conical coal bunker of central post and bottom, stacker, reclaimer, vibration feeder etc.; The civil engineering part then mainly comprises steel work grid shell roof, steel concrete coal-stopping wall (being called for short coal-stopping wall in following), warehouse entry trestle and the tunnel that delivers from godown (as shown in Figure 1).
The main flow process that the sealing coal yard is served power plant's production is as follows: the outside comes coal to be transported to the warehouse entry trestle of sealing coal yard by the relevant device of power plant's coal handling system, driving belt on the warehouse entry trestle is transported to the stacker of sealing coal yard central authorities, operates by coming coal successively to stack in coal yard and storage through stacker then.During coal piling in thermal power plant produce to need uses the sealing coal yard, will be delivered to the underground fortune coal gallery of coal yard, and finally be transported to boiler and burn (as shown in Figure 1) by the fire coal that the reclaimer operation will store by the principle of coal piling first in first out.
For environmental requirement improve day by day, popular today that environmental consciousness strengthens day by day, resources conservation more and more is much accounted of, the outstanding advantage of closed circle coal yard mainly shows as: (1) coal yard is a full-closed structure, can avoid the interior coal dust of coal yard to escape contaminated environment; (2) coal yard storage coal all is a dry coal, guarantees that the storage coal is not subjected to the influence of amblent air temperature, has reduced the loss that coal causes because of reasons such as volatilization, rainfall losses in storage process; (3) the equipment advanced person of coal yard employing, automaticity is higher, the coal yard coal piling returns the rate of getting and utilization of area rate height, can save the land occupation resource effectively.
The domestic round sealed coal yard structure typical project cost analysis that has moved at present is as shown in table 1:
Table 1 typical case sealing coal yard engineering quantity constitutes list
| Subitem | The basis | Superstructure buttress coal-stopping wall | Steel work | Roofing | Construction costs |
| Ratio | 19.6％ | 50.3％ | 19.3％ | 10.8％ | 100％ |
As can be seen, the proportionate relationship that basis and superstructure buttress coal-stopping wall cost account for total cost is about 70%, and the shared ratio of the cost of space truss structure and Roof system only is about 30%.Therefore the expense of buttress, coal-stopping wall height directly has influence on the height of sealing coal yard overall cost.
Round sealed coal yard structure typical project in the table 1 is: coal-stopping wall high 18 meters (or higher), and round sealed coal yard bottom surface diameter is 120 meters, ground level (comprising the high and steel work grid shell roof of coal-stopping wall) is 60 meters.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned existing disadvantages of background technology part, and a kind of coal yard structure that can reduce closed circular coal yard construction costs is provided.It is by expansion coal yard diameter, and the maximum coal piling height at reduction coal-stopping wall place, thereby reduce coal-stopping wall coal piling lateral pressure, to reach the purpose that reduces coal-stopping wall engineering quantity and ground disposal cost, reduces sealing coal yard civilwork engineering quantity.
The purpose of this utility model reaches by following measure: the coal yard structure that can reduce closed circular coal yard construction costs, it comprises coal-stopping wall, is positioned at the roof grid structure structure on the coal-stopping wall, it is characterized in that the altitude range of described coal-stopping wall is: less than 18 meters and greater than 0 meter; The diameter range of the rounded bottom that coal-stopping wall surrounds is: greater than 120 meters and smaller or equal to 163 meters; Coal-stopping wall is 60 meters with the height that is positioned at the roof grid structure structure on the coal-stopping wall.
The construction costs of coal yard structurally associated part is calculated:
1, coal-stopping wall part: the diameter that supposition earlier suitably increases the sealing coal yard reduces the coal piling horizontal thrust that acts directly on the concrete guard wall.Suppose sealing coal yard diameter 120m, the coal piling angle is 38 °～40 °, coal piling height 18m, as tan40 °=43m of diameter increase 2 * 18m ÷ of sealing coal yard (40 ° of values are referring to " steam power station fortune coal designing technique standard " DL/T 5187.1-2004 in the formula), when the diameter that is about to seal coal yard is adjusted into 163m, the coal piling horizontal force that acts on the concrete guard wall can be reduced to zero.
In like manner, suppose that the coal piling horizontal thrust was unit force P when the coal piling height was 18m, according to simple triangle ratio conversion relation, when the coal piling height reduces by 1/2, the coal piling thrust that acts directly on the concrete guard wall is reduced to P/4, the coal piling height reduced by 1/4 o'clock, and the coal piling horizontal force that acts directly on the concrete guard wall is reduced to P/16.
2, ground disposal cost.Ground is handled if adopt pile foundation, and then the stake number is controlled by horizontal thrust.Along with the reduction of coal piling lateral pressure, required stake number reduces gradually, reduces greatly thereby cushion cap ring beam pulling force also reduces the ring beam engineering quantity gradually.When the coal piling lateral pressure was reduced to a certain degree, the stake number no longer was subjected to coal piling pressure (horizontal force) control, only arranged by the load of top roof structure to get final product.Reduce the ground disposal cost greatly.
The increasing of sealing coal yard diameter also can bring steel superstructure net shell and roofing profiled sheet engineering quantity when reducing coal-stopping wall engineering quantity and ground disposal cost increase.Therefore by just finding out economy of the present utility model, as shown in table 2 to the comprehensive contrast of different-diameter sealing coal yard civilwork engineering quantity.
Table 2 comprehensive technology economy is list relatively
| Span (m) | 120 | 130 | 140 | 150 | 163 |
| Steel superstructure (ton) | 494.5 | 537.6 | 630.8 | 752.5 | 890.5 |
| Roofing profiled sheet (m 2) | 19512 | 21590 | 25166 | 29025 | 33235 |
| Concrete coal-stopping wall (m 3) | 7166 | 6444 | 4953 | 3160 | 900 |
| Heat insulation frid (m 3) | 1334 | 1341 | 1063 | 686 | 0 |
| Cushion cap concrete (m 3) | 6491 | 6939 | 5495 | 2356 | 2511 |
| Pile foundation (root) | 654 | 608 | 443 | 337 | 348 |
| Cost (ten thousand yuan) | 3817 | 3774 | 3251 | 2695 | 2674 |
To annotate: 1). each the work items comprehensive unit price is provided through specialty by skill: net shell steel: 9300 yuan/ton, profiled sheet: 215 yuan/m
2, grout pile concrete: 1170 yuan/m
3, basic concrete: 950 yuan/m
3, buttress concrete: 1300 yuan/m
3, coal-stopping wall concrete: 900 yuan/m
3, frid concrete: 1300 yuan/m
3
As can be seen from the table, get under the constant situation of coal equipment availability radius when keeping heap, increase sealing coal yard diameter, owing to reduced the concrete work amount and the expense of foundation processing, coal-stopping wall and buttress significantly, though the corresponding increase of the engineering quantity of steel superstructure, but the amplitude that steel work partly increases is lower than the amplitude that concrete reduces, so still can reach the purpose that reduces construction costs.
Description of drawings
Fig. 1 is the overall structure schematic diagram of the closed circular coal yard of existing typical case.
Fig. 2 is sealing coal yard diameter and retaining coal height contrast figure.
1. coal piling among the figure, 2. stacker-reclaimer, 3. warehouse entry trestle, 4. spherical net shell, the tunnel that 5. delivers from godown, 6. coal-stopping wall, H. ground level, h. coal-stopping wall height, R. round sealed coal yard bottom surface diameter.
The specific embodiment
Describe performance of the present utility model in detail below in conjunction with accompanying drawing, but they do not constitute to qualification of the present utility model, only do for example.Simultaneously by illustrating that advantage of the present utility model will become clear more and understanding easily.
Consult Fig. 1 as can be known: the closed circular coal yard structure of existing typical case is: coal-stopping wall is high 18 meters, and round sealed coal yard bottom surface diameter is 120 meters, and ground level (comprising the high and steel work grid shell roof of coal-stopping wall) is 60 meters.Other parts as: the coal yard plant equipment is the national standard part, and the coal piling angle is 38 °～40 °, coal piling height 17.5m.
Consult Fig. 2 as can be known: the utility model can reduce the coal yard structure of closed circular coal yard construction costs, it comprises coal-stopping wall, is positioned at the roof grid structure structure on the coal-stopping wall, and the altitude range of coal-stopping wall is: less than 18 meters (not comprising 18 meters) and more than or equal to 0 meter; The diameter range of the rounded bottom that coal-stopping wall surrounds is: greater than 120 meters (not comprising 120 meters) and be less than or equal to 163 meters; Coal-stopping wall is 60 meters with the height that is positioned at the roof grid structure structure on the coal-stopping wall.Other parts are identical with existing structure.
1. structure model selection
Basic principle is that the work plane that should satisfy the technology stacker-reclaimer requires (national standard is arranged).2 as can be seen in conjunction with the accompanying drawings, for guaranteeing that the sphere net case roofing satisfies this requirement, the scheme that can take is under the constant principle of the spherical net shell of strict guarantee peak absolute altitude, increase spherical shell sphere diameter and span gradually, the general relationship of sealing coal yard sphere net case roofing vary in diameter and retaining coal Height Adjustment as shown in Figure 2.When increasing, the sphere net case diameter can reduce the height of substructure coal-stopping wall effectively, span increases big more then under the prerequisite that guarantees the coal storage capacity coal-stopping wall height of the required setting of civil engineering more little, can optimize the engineering quantity of the stressed of coal-stopping wall and monolithic concrete cylindrical shell effectively; Thereby the more little pressure to coal-stopping wall of coal piling height is also more little, and the disposal cost of coal-stopping wall ground can correspondingly reduce.Be not difficult to find out when net shell diameter is enough big, coal piling can directly be deposited in the net shell by its natural coal piling line states and not keep in touch with any peripheral structure, that is to say to reach coal piling and coal yard ground enclosed construction can be thrown off fully, the sphere net case roofing only has been the sealing process of a roof system.Can cancel the coal-stopping wall cylindrical shell this moment fully or handle by the masonry that simple structure is built limited height by laying bricks or stones, the sphere net case roofing directly lands, and is supported on the basis.
2. fringe conditions
The increase of net shell span and sphere diameter makes the height of coal-stopping wall be able to continuous reduction, and the rigidity of bearing capital should raise along with the reduction of coal-stopping wall.Suppose that the coal-stopping wall height reduces to zero, latticed shell structure directly places on the insulated column, the high 2200mm of insulated column, and cross dimensions is 600 * 800mm, then the horizontal radial displacement of capital under the effect of unit level power power is: δ=H
3/ 3EI=2200
3/ (3 * 3 * 104 * 800 * 600
3/ 12)=the then corresponding capital horizontal rigidity of 8.22 * 10-6mm/N is 1/ δ=1/8.22 * 10-6=121KN/mm.
In sum, the coal-stopping wall height reduces rear support capital horizontal rigidity should be between the 33.3KN/mm to 121KN/mm under the 120m span, and low highly more rigidity is big more.Consider that this rigidity absolute value is bigger, can be considered as motionless hinged-support basically for the model after the vary in diameter and handle.
3. computational analysis
Adopt the VB coding that the joint load data are done pre-treatment, import the MSTCAD software for calculation and do analytical calculation.
By enlarging the arrangement of sealing coal yard diameter, can reduce the coal piling height even the cancellation coal-stopping wall at coal-stopping wall place, thereby reduce of the influence of coal piling lateral pressure structure, reduce coal-stopping wall engineering quantity and corresponding ground disposal cost greatly.Reduction for sealing coal yard overall cost has bigger practical significance.
Claims (1)
1. can reduce the coal yard structure of closed circular coal yard construction costs, it comprises coal-stopping wall, is positioned at the roof grid structure structure on the coal-stopping wall, it is characterized in that the altitude range of described coal-stopping wall is: less than 18 meters and more than or equal to 0 meter; The diameter range of the rounded bottom that coal-stopping wall surrounds is: greater than 120 meters and be less than or equal to 163 meters; Coal-stopping wall is 60 meters with the height that is positioned at the roof grid structure structure on the coal-stopping wall.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201109583U CN201635457U (en) | 2010-02-03 | 2010-02-03 | Coal yard structure capable of reducing project cost of closed-type circular coal yard |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201109583U CN201635457U (en) | 2010-02-03 | 2010-02-03 | Coal yard structure capable of reducing project cost of closed-type circular coal yard |
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| CN201635457U true CN201635457U (en) | 2010-11-17 |
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| CN2010201109583U Expired - Fee Related CN201635457U (en) | 2010-02-03 | 2010-02-03 | Coal yard structure capable of reducing project cost of closed-type circular coal yard |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122701A (en) * | 2013-02-19 | 2013-05-29 | 中国能源建设集团广东省电力设计研究院 | Structure-improved coal storage yard used for thermal power plant |
| CN114396073A (en) * | 2021-12-06 | 2022-04-26 | 中国能源建设集团广东省电力设计研究院有限公司 | Coal yard foundation structure and construction method thereof, and coal yard structure |
-
2010
- 2010-02-03 CN CN2010201109583U patent/CN201635457U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103122701A (en) * | 2013-02-19 | 2013-05-29 | 中国能源建设集团广东省电力设计研究院 | Structure-improved coal storage yard used for thermal power plant |
| CN103122701B (en) * | 2013-02-19 | 2015-05-13 | 中国能源建设集团广东省电力设计研究院 | Structure-improved coal storage yard used for thermal power plant |
| CN114396073A (en) * | 2021-12-06 | 2022-04-26 | 中国能源建设集团广东省电力设计研究院有限公司 | Coal yard foundation structure and construction method thereof, and coal yard structure |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTI Free format text: FORMER OWNER: CENTRAL SOUTHERN CHINA ELECTRIC POWER DESIGN INSTITUTE, CHINA POWER ENGINEERING CONSULTING GROUP COR Effective date: 20150205 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150205 Address after: 430071 Wuchang District, Hubei, South Central Road No. two, No. 12, No. Patentee after: Co., Ltd of Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Corporation Address before: 430071 No. 668 Democratic Road, Wuchang District, Hubei, Wuhan (Central South Electric Power Design Institute) Patentee before: Central Southern China Electric Power Design Institute, China Power Engineering Consulting Group Cor |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20170203 |
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| CF01 | Termination of patent right due to non-payment of annual fee |