Large-scale straight tube cone segment type steel structure cooling tower
Technical field
The utility model belongs to power plant's large cooling column design field, is specifically related to a kind of large-scale straight tube cone segment type steel structure cooling tower.
Background technology
In traditional steam power station, large cooling column is all to adopt steel concrete shell Hyperbolic cooling tower substantially.This structural shape has passed through years of researches and practice, and is applied in a large amount of engineerings, has obtained good effect.But along with the development of technology and owner's diversified demand, cooling this type of cooling Fu Mei water deficient regions power plant will adopt in a large number indirectly, and this new structure pattern of steel structure cooling tower also will become one of selection.In international engineering projects, owing to being subject to the restriction of local material and construction technology, when the more difficult acquisition of concrete material or concrete construction expense are higher, the advantage of steel structure cooling tower is more outstanding.In cold district, because concrete part is can the engineering time limited, for not affecting the whole construction period and considering that concrete structure is very fast at cold district performance degradation, steel structure cooling tower just becomes can selection scheme.
Utility model content
The purpose of this utility model is to provide a kind of large-scale straight tube cone segment type steel structure cooling tower, it has relatively low cost, speed of application and cheap later maintenance cost faster, can be in cold district or the more unobtainable area of concrete material use.
For achieving the above object, the utility model adopts following technical scheme:
Large-scale straight tube cone segment type steel structure cooling tower, comprises column, bearing diagonal, wind truss and purlin; The top of this cooling tower is for vertically cylindric, and bottom is tapered cylindric; Column top is vertical shape, and bottom tilts towards cooling tower outside; The skeleton of this cooling tower is the column array that the rotation of the column plumb line that the He Xia center of circle in the center of circle forms on cooling tower forms; Bearing diagonal is set between column; Described wind truss is arranged on the inner side hoop of straight line column; Described purlin is arranged on the outside of straight line column.
The utility model further improves and is: bearing diagonal is that monocline support or right-angled intersection are supported.
The utility model further improves and is: the outside of purlin is fixed with profiled sheet.
The utility model further improves and is: the cross section of described column is i shaped cross section or box-type section; Described support is mixed and is connected by bolt or bolt weldering with column.
The utility model further improves and is: wind truss is evenly arranged along the vertical direction of cooling tower, is greater than the wind truss of other position, the double inspection platform of doing of wind truss in the rigidity of the wind truss of top rectilinear cylindrical and the setting of lower cone intersection; Wind truss adopts duplexing shaped steel lattice pattern, or bolt weldering with bolts with column mixes and be connected.
The utility model further improves and is: purlin end is connected in the outside of column, and profiled sheet is installed in the outside of purlin, and profiled sheet is aluminium plating zinc plate; Profiled sheet and purlin adopt the fixing stress outer panel skin that forms of self-drilling connection; Between purlin and the inner side of column, be furnished with horizontal angle brace.
The utility model further improves and is: described wind truss is arranged circumferentially in column and support intersection location.
The utility model further improves and is: the spacing of purlin is between 0.8m to 2.0 meter, and purlin and column are with bolts, and some purlins of sustained height form the purlin ring of hoop sealing; With bolts by gusset plate between purlin and bearing diagonal.
The utility model further improves and is: wind truss adopts i iron or hot-rolled steel section to make inside and outside chord member, and diagonal web member adopts angle steel or steel pipe, or bolt weldering with bolts with column mixes and be connected.
Compared with prior art, the utlity model has following technique effect:
The utility model is used straight line i shaped steel column or straight line box column can reduce member difficulty of processing and mounting process difficulty.This large-scale straight tube cone segment type steel structure cooling tower is compared and can significantly be alleviated dead load with conventional concrete cooling tower, and deadweight is about 10% left and right of Concrete Cooling Water Tower, can save ground and process and foundation cost, thereby make overall cost lower.By adopting aluminium, aluminium plating zinc plate or glass fiber reinforced plastic skin material to reduce later maintenance expense.
The utility model cooling tower is a kind of new steel structure cooling tower of alternative traditional double shaped form Concrete Cooling Water Tower, and applicable to installed capacity, at 125MW and above indirect cooling steam power station unit, and cold district is while being not suitable for adopting Concrete Cooling Water Tower.It has, foundation fast from heavy and light, speed of application and processes the advantages such as simple, comprehensive cost is cheap, seismic wind resistance is good, later maintenance cost is low.Can be widely used in rich coal water deficient regions and cold district between cold unit cooling tower works.
A kind of large-scale straight tube cone segment type steel structure cooling tower of the utility model, had both no longer adopted traditional Concrete Cooling Water Tower, did not also adopt traditional hyperbolic-type shape, and adopt steel work to form a kind of top, was the cooling tower that vertical cylinder bottom is tapered cylinder; Vertical major bearing structures is straight line column, and the straight line column plumb line rotation array that the He Xia center of circle in the center of circle forms on tower forms steel structure framework, and straight line column is welding i shaped cross section; Between straight line column, adopt right-angled intersection support or monocline support; Along hoop wind truss is set highly at a certain distance; At top rectilinear cylindrical and lower cone intersection, the wind truss that rigidity is larger is set, purlin end is connected in the outside of column, profiled sheet (being stressed-skin construction) is installed in the outside of purlin, profiled sheet and purlin adopt self-drilling connection to fix, and between purlin and the inner side of column, are furnished with horizontal angle brace.In power plant, adopt straight tube cone segment type steel structure cooling tower, have, foundation fast from heavy and light, speed of application process simple, comprehensive cost is cheap, seismic wind resistance is good, later maintenance cost is low, residual value advantages of higher.
Accompanying drawing explanation
The large-scale straight tube cone of Fig. 1 the utility model segment type steel structure cooling tower elevation;
The large-scale straight tube cone of Fig. 2 the utility model segment type steel structure cooling tower axonometric drawing;
The large-scale straight tube cone of Fig. 3 the utility model segment type steel structure cooling tower single line bar axonometric drawing;
The large-scale straight tube cone of Fig. 4 the utility model segment type steel structure cooling tower column, purlin, profiled sheet connect detail drawing;
The large-scale straight tube cone of Fig. 5 the utility model segment type steel structure cooling tower column drawing;
The large-scale straight tube cone of Fig. 6 the utility model segment type steel structure cooling tower column drawing;
The large-scale straight tube cone of Fig. 7 the utility model segment type steel structure cooling tower wind truss detail drawing;
The large-scale straight tube cone of Fig. 8 the utility model segment type steel structure cooling tower column, purlin, profiled sheet connect plan view.
Wherein: 1 is straight line column; 2 is bearing diagonal; 3 is wind truss; 4 is purlin; 5 is profiled sheet; 6 is angle brace; 7 is tapping screw.
The specific embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Referring to shown in Fig. 1 to Fig. 8, a kind of large-scale straight tube cone segment type steel structure cooling tower of the utility model, comprises column 1, bearing diagonal 2, wind truss 3, purlin 4 and profiled sheet 5; The top of this cooling tower is vertical cylinder, and bottom is tapered cylinder, and column 1 top is vertical shape, and bottom tilts towards cooling tower outside; The skeleton of this cooling tower is the column array that the rotation of column 1 plumb line that the He Xia center of circle in the center of circle forms on cooling tower forms; Bearing diagonal 2 is set between column 1, and bearing diagonal 2 is monocline support or right-angled intersection support; Along tower short transverse, be evenly arranged lattice wind truss 3, wind truss 3 is arranged on the inner side hoop of column 1; Purlin 4 is arranged on the outside of column 1; Profiled sheet 5 is arranged on the outside of purlin 4.The main force structure of cooling tower is column 1 and hoop wind truss 3, has reduced the resistance to cooling tower internal gas flow.Wind truss 3 is arranged circumferentially in column 1 and support 2 intersection location, and wind truss 3 adopts duplexing shaped steel lattice pattern i iron or hot-rolled steel section to make inside and outside chord member, and diagonal web member adopts angle steel or steel pipe, or bolt weldering with bolts with column 1 mixes and be connected.
Column 1 adopts welding i shaped cross section or box-type section, makes cooling tower internal gas flow space large as far as possible; Between depth of section 1000mm~2000mm; The support of right-angled intersection support or monocline is set between column 1 and column 1, and bearing diagonal 2 is also selected i shaped cross section, and bearing diagonal 2 or bolt weldering with bolts with column 1 mixes and be connected, guarantees that connection reliably.Wind truss 3 is evenly arranged along the vertical direction of this cooling tower, and the rigidity that wind truss 3 is set at top rectilinear cylindrical and lower cone intersection is greater than the wind truss of other position, and wind truss 3 can doublely be done inspection platform.Wind truss 3 adopts duplexing shaped steel lattice pattern, or bolt weldering with bolts with column 1 mixes and be connected, and guarantees to connect reliable.
Purlin 4 ends are connected in the outside of column 1, and profiled sheet 5 is installed in the outside of purlin 4, and profiled sheet 5 is covering, adopt aluminium plating zinc plate.Profiled sheet 5 adopts tapping screws 7 to be connected and fixed with purlin 4, between purlin 4 and the inner side of column 1, is furnished with horizontal angle brace 6, formed can mutually provide support, cooperative structure member, the utilization rate of raising steel strength, reduces dead load.
The spacing of purlin 4 is between 0.8m to 2.0 meter, and purlin 4 adopts plain bolt or high-strength bolt to be connected with column 1, and a section purlin 4 forms the purlin ring of hoop sealing.Purlin 4 also will be connected with bearing diagonal 2, and purlin 4 is used to assist assurance bearing diagonal 2 around the bearing stability of weak axle, and purlin 4 adopts plain bolt or high-strength bolt to be connected with bearing diagonal 2 by gusset plate.
Purlin 4 utilizes shear stiffness and intensity in profiled sheet 5 planes after being connected by intensive tapping screw 7 with profiled sheet 5, forms stress outer panel skin, participates in resisting wind load and geological process together with main structure skeleton.
Computational analysis shows, this kind large-scale straight tube cone segment type steel structure cooling tower is due to from heavy and light, and geological process reduces greatly, and the active force that passes to foundation also significantly reduces.Due to steel structure cooling tower be applied between cold unit, its internal heat dry air is to steel corrosion of component not serious, so later maintenance expense is not high.
Large-scale straight tube cone segment type steel structure cooling tower of the present utility model, has, foundation fast from heavy and light, speed of application and processes the advantages such as simple, comprehensive cost is cheap, seismic wind resistance is good and later maintenance cost is low.The cold unit cooling tower works that can be widely used in rich coal water deficient regions and cold district.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model; can not assert that the specific embodiment of the present utility model only limits to this; for the utility model person of an ordinary skill in the technical field; without departing from the concept of the premise utility; can also make some simple deduction or replace, all should be considered as belonging to the utility model and determine scope of patent protection by submitted to claims.