Bamboo is wound around composite chimney
Technical field
The utility model relates to a kind of bamboo and is wound around composite chimney.
Background technology
Chimney is one of the most ancient, most important environmental control system, and main effect is smoke evacuation, waste air, is widely used in industrial production.What generally adopt in the market is brick chimney, reinforced concrete chimney and steel stack three major types.These conventional chimneys exist to produce installs the shortcomings such as energy consumption is high, resource is not recycling, inwall is rough, long construction period, poor thermal insulation property, cost and maintenance cost are higher.
The patent No. is: 88208210.8, a kind of structure is mentioned: adopting blue bamboo through being processed into, getting through the inner septum in thick bamboo tube, heavy caliber is connected with chimney in the Chinese patent that patent name is " Bamboo chimney shaft ", and retain last barrier film of small-caliber end, be with holes around it.Its size of chimney made by technique scheme is limited, is generally that family uses, is not suitable for industrial application.
The patent No. is 201110035166.3, a kind of preparation method is disclosed: first Wet Winding Process one deck composite hoop layer on mould in the Chinese patent of patent name for " a kind of method using prefabricated component to manufacture large-scale composite material tubular body ", then above prefabricated composite material prefabricated component being wound on, again at wound thereon one deck composite hoop layer, the prefabricated component be wound between two-layer hoop layer is bound by the fiber of outer hoop layer, the resin-dipping of simultaneously being had more than needed by hoop layer, bonding, form axial layer, and hoop layer and axial layer, an entirety is become again by resin bonding, so move in circles, until designing requirement, form the composite product of hoop layer and axial layer alternately stacked 3 layers or sandwich construction.Described prefabricated component is the bamboo curtain splint shape component of main body and connecting line composition, and its main body is the strip material that polymer matrix composites employing pultrusion molding process is made.Defect and the deficiency of technique scheme are: these technical scheme raw material adopt polymer matrix composites, comprise the high energy consumption such as glass fibre, superhigh molecular weight polyethylene fibers, production process not environmentally, material that cost is high.And its structure and the application also have many different, do not have inner liner, and the bamboo curtain splint shape prefabricated component of resin-based main body and connecting line composition its be single direction, structural strength is not high enough.
Utility model content
Technical problem to be solved in the utility model overcomes deficiency of the prior art and provides a kind of inner wall smooth, high insulating effect, without the need to increasing thermal insulation layer, decrease dangerous vapors to corrode in the condensation of inwall in uphill process, cost is low, easy for installation simultaneously, and environmental protection, the reproducible bamboo of resource are wound around composite chimney.
The technical scheme in the invention for solving the above technical problem is: a kind of bamboo is wound around composite chimney, main body is cylindric, it is characterized in that: main body radial section comprises inner liner from the inside to the outside, structure sheaf and external protection coating, inner liner comprises the first inner liner and the second inner liner from the inside to the outside, the first described inner liner and the second inner liner are made by the fibrofelt or non-woven fabrics being stained with fire resistant resin, the fibrofelt of the first inner liner or its thickness of non-woven fabrics are less than the second inner liner, its resin adheres amount is greater than the second inner liner, it is outer and formed by resin-bonded solidification at inner liner that structure sheaf is thin bamboo strips used for weaving band multi-lay winding, structure sheaf outer surface has external protection coating.First inner liner adheres to more fire resistant resin, namely after solidification, the first inner liner resin layer thickness is greater than the second inner liner resin layer thickness, the inner liner made like this can meet high temperature resistant, the corrosion resistant requirement in chimney inside, and after solidification, inner surface is smooth, and steam can not be allowed at internal condensate.The structure sheaf made effective weight reduction while the mechanical strength ensureing chimney, convenient transport, and raw material good heat insulating, environmental protection, wide material sources, with low cost, produce, installation process is pollution-free.External protection coating generally should have radiation proof, the characteristic such as corrosion-resistant, anti-oxidant, in order to protect chimney internal structure, effectively extends the service life of chimney.
First inner liner thickness described in the utility model is at least 0.3mm, and the second inner liner thickness is at least 1.5mm, and Laminate construction thickness is at least 15mm, and external protection coating thickness range is 1.5mm ~ 4mm.If thickness cannot meet the requirement of strength of general chimney lower than above-mentioned lower limit.Above-mentioned external protection coating thickness range had both ensured to meet requirement of shelter, and being unlikely to again wastes raw material, specifically can choose numerical value according to designing requirement.
First inner liner described in the utility model adopts 20g/m
2~ 30g/m
2fibrofelt or non-woven fabrics, second inner liner adopt 50g/m
2~ 300 g/m
2fibrofelt or non-woven fabrics.The density range of the first inner liner is more suitable for the infiltration of resin, to form smooth inner surface, the density range of the second inner liner is more suitable for the intensity increasing inner liner.
Thin bamboo strips used for weaving band described in the utility model be thin bamboo strips used for weaving bonding, sew up or be woven on lining cloth, thin bamboo strips used for weaving bandwidth scope is 50mm ~ 200mm, and thickness range is 0.5mm ~ 1.2mm.Bamboo processing is become the thin bamboo strips used for weaving of certain specification, then by thin bamboo strips used for weaving and lining cloth compound, its benefit facilitates mechanization continuous seepage, and make full use of bamboo wood, do not cause unnecessary waste.
Thin bamboo strips used for weaving band described in the utility model is divided into axial thin bamboo strips used for weaving band and radial thin bamboo strip band according to the direction difference that thin bamboo strips used for weaving is arranged on lining cloth.Two kinds of thin bamboo strips used for weaving bands coordinate winding, can increase the intensity of cylindrical shell.
Radial thin bamboo strip band spiral winding 1 ~ 2 layer after axial thin bamboo strips used for weaving band hoop is wound around 2 ~ 3 layers in structure sheaf described in the utility model, and be circulated to structure sheaf design thickness with this.Axial thin bamboo strips used for weaving band hoop is wound around, the axial strength of cylindrical shell can be ensured, coordinate radial thin bamboo strip band spiral winding, make cylindrical shell meet the requirement of general chimney to hoop tensile strength, cutting performance.The several designing requirement of border factually of specific layer is chosen.
Funnel body described in the utility model is segmented, each section of head and the tail match of pipe diameter, by socket joint or Flange joint, to seam by non-woven fabrics and resin seal, each section of radial section includes inner liner, structure sheaf and external protection coating from the inside to the outside, and inner liner comprises the first inner liner and the second inner liner from the inside to the outside.When chimney is larger, can sectional making be adopted, and then field-installed mode, be convenient to processing and transport.
Chimney shape described in the utility model is straight-tube shape or tapered cylinder shape, and the chimney outlet topmost of tapered cylinder shape is expansion opening.The chimney exit topmost of tapered cylinder shape should be designed to expand opening, to reduce superfluous static pressure, reduces flue stream dynamic resistance, improves stress state, improve the chimney life-span.
Chimney outer setting described in the utility model has steelwork tower truss or hawser.Consider that chimney height is higher, wind carries its impact very large, needs to strengthen the structural strength of chimney, and pylon or the hawser that can increase steel construction in the outside of chimney are reinforced.
The utility model compared with prior art has the following advantages: adopt full bamboo fibre material to make the chimney meeting requirement of strength, environmental protection, the good heat preservation performance of material own, without the need to increasing thermal insulation layer; Make inner liner by the fibrofelt or non-woven fabrics that are stained with high temperature resistant, corrosion-resistant resin, make inner surface smooth, the condensation of dangerous vapors can not be caused to pile up, cause corrosion; Cylindrical shell adopts axial thin bamboo strips used for weaving band, radial thin bamboo strip band by hoop and spiral winding, makes intensity high, meets the mechanical requirements of general chimney for axis, hoop; Make segmented, convenient transport and installation.
Accompanying drawing explanation
Fig. 1 is the utility model radial section schematic diagram.
Fig. 2 is axial thin bamboo strips used for weaving band schematic diagram described in the utility model.
Fig. 3 is radial thin bamboo strip band schematic diagram described in the utility model.
Fig. 4 is that the utility model chimney expands mouth structure schematic diagram.
Detailed description of the invention
Embodiment 1
Self-supporting chimney, height 30m, diameter 3m.
See Fig. 1, main body is that straight tube is cylindric, main body radial section comprises from the inside to the outside inner liner 1, structure sheaf 2 and external protection coating 3, inner liner comprises the first inner liner 11 and the second inner liner 12 from the inside to the outside, the first described inner liner 11 and the second inner liner 12 are made by the fibrofelt or non-woven fabrics being stained with fire resistant resin, structure sheaf 2 for thin bamboo strips used for weaving band multi-lay winding outer and formed by resin-bonded solidification at inner liner 1, structure sheaf 2 outer surface has external protection coating 3.In the present embodiment, the first inner liner thickness is 0.4mm, and the second inner liner thickness is 1.5mm, and Laminate construction thickness is 140mm, and external protection coating thickness is 3mm.
Inner liner 1 preparation process:
1) carried out by specified size mould removing contamination, add release layer after waxing polishing, release layer can select releasing agent or film.
2) resin that evenly spray one deck corrosion-and high-temp-resistant performance is good on release layer, around last layer 20g/m
2~ 30g/m
2fibrofelt or non-woven fabrics.Fibrofelt or non-woven fabrics run through with impregnation or pouring gluing method, and gel content reaches more than 90%.
3) again around one deck 50g/m
2~ 300g/m
2non-woven fabrics or weave cotton cloth, with impregnation or drench gluing method and run through, gel content reaches more than 70%.
4) form just solidification after heating, curing degree reaches more than 70%, makes the inner liner of chimney barrel design thickness.
The preparation process of structure sheaf 2:
1) mao bamboon is split into thin bamboo strips used for weaving, degreasing, cleaning, drying control moisture content, connect into a continuous print thin bamboo strips used for weaving band afterwards by thin bamboo strips used for weaving lining cloth, width is 50mm ~ 200mm, thickness is preferably within the scope of 0.5mm ~ 1.2mm, and in the present embodiment, width is 100mm, and thickness is 1mm.Connected mode can be bonding, stitching, braiding etc.
2) by above-mentioned thin bamboo strips used for weaving roll coil of strip rolling, see Fig. 2-3, thin bamboo strips used for weaving band is rolled into volume after making, and the thin bamboo strips used for weaving band after rolling is cylindrical.The long limit being rolled into volume of the columniform circular end face of setting composition is longitudinal edge A, and limit, columniform high direction is axial limit B.When the long limit of thin bamboo strips used for weaving is axially, when radially limit A arranges n row, be axial thin bamboo strips used for weaving band; When the long limit of thin bamboo strips used for weaving is radial, when limit B arranges n row vertically, be radial thin bamboo strip band.
First be wrapped on inner liner 1 by axial thin bamboo strips used for weaving band hoop, be wound around 2 ~ 3 layers, when hoop is wound around, spiral angle is 90 degree.Then radial thin bamboo strip band spiral winding, be wound around 1 ~ 2 layer, spiral angle is 60 ~ 85 degree, and winding limit, limit adds resin compound, and resin compound is made up of modified urea-formaldehyde resin, bio-based filler, curing agent.And so forth, design thickness is wound to.
3) through solidification equipment solidification, the body of rod be cured is carried out surface finish and finishing.
External protection coating 3 preparation process: at the outer surface brushing external protection coating of structure sheaf, adopts the material of radiation proof and corrosion resistance and good, forms external protection coating after solidification according to applied environment.
Embodiment 2
Drag-line chimney, height 45m, slightly footpath Ф 2.2m, tapering 1/75.
See Fig. 1 and Fig. 4, main body is tapered cylinder shape, and the chimney outlet topmost of tapered cylinder shape is expansion opening 5.Main body radial section comprises from the inside to the outside inner liner 1, structure sheaf 2 and external protection coating 3, inner liner comprises the first inner liner 11 and the second inner liner 12 from the inside to the outside, the first described inner liner 11 and the second inner liner 12 are made by the fibrofelt or non-woven fabrics being stained with fire resistant resin, structure sheaf 2 for thin bamboo strips used for weaving band multi-lay winding outer and formed by resin-bonded solidification at inner liner 1, structure sheaf 2 outer surface has external protection coating 3.
Described funnel body is segmented, each section of head and the tail match of pipe diameter, by socket joint or Flange joint, to seam by non-woven fabrics and resin seal, each section of radial section includes inner liner, structure sheaf and external protection coating from the inside to the outside, and inner liner comprises the first inner liner and the second inner liner from the inside to the outside.In the present embodiment, the first inner liner thickness is 1mm, and the second inner liner thickness is 3mm, and Laminate construction thickness is 206mm, and external protection coating thickness is 3mm.The preparation method of each layer is see embodiment 1.Chimney outer setting has hawser.
Above content described in this description is only to the explanation of the utility model structure example.Generally want the first inner liner thickness to be at least 0.3mm, the second inner liner thickness is at least 1.5mm, and Laminate construction thickness is at least 15mm, and external protection coating thickness range is 1.5mm ~ 4mm.Laminate construction thickness is according to concrete instructions for use design setting.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, protection domain of the present utility model all should be belonged to.