Cement kiln tail waste heat boiler heating surface suspension structure and rapping apparatus thereof
Technical field
The utility model relates to and is used for clinker production line pure low-temperature cogeneration system field, more particularly, the utility model relates to the heating surface suspension structure of the cement kiln tail waste heat boiler that a kind of afterheat generating system uses, and the utility model also relates to the rapping apparatus of this heating surface suspension structure.
Background technology
Cement industry is that major power consumer also is the energy waste rich and influential family, and country continued macro adjustments and controls in nearly 2 years, the problem of having saved energy and reduce the cost and must finish into cement industry, and the cement kiln pure low-temperature cogeneration technology can solve this problem.In cement kiln pure low-temperature cogeneration technology field, the waste heat boiler design is a very crucial link, it not only is related to the organic efficiency of whole cement kiln waste-heat power generation system to the cement producing line waste heat, and is related to the operation that can afterheat generating system steady in a long-term.At present, in cement production process, by the waste gas that kiln tail preheater is discharged, grade is low, and flow is big, the dust content height (〉=80mg/Nm3), dust concentration is bigger in the waste gas, and the adhesiveness of dust is stronger.In order to reclaim this low-grade waste gas residual heat, be provided with the PH waste heat boiler at the kiln tail, owing to contain a large amount of dust in the waste heat waste gas, when waste gas carries out heat exchange by boiler, to hinder heat transmission attached to the surface of boiler heat-transfer pipe, make the heat exchange property of boiler reduce significantly, and make the flow resistance of waste gas in boiler increase, thereby power consumption is increased.At present in China's cement waste heat technology, most of kiln tail boilers adopt vertical boiler, vertical boiler ground heating surface all adopts horizontally-arranged to arrange that this structure makes and causes the boiler heating surface heat exchange efficiency low after dust stratification is more by the easy dust stratification of heating surface heat exchange pipe external surface easily.
The utility model content
Technical problem to be solved in the utility model is: provide a kind of and can improve the boiler heat exchange efficiency, guarantee that the cement kiln waste gas waste heat can reclaim to greatest extent, really accomplish a kind of cement kiln tail waste heat boiler heating surface suspension structure of the principle of " it uses heat to the greatest extent ".
The utility model is a kind of cement kiln tail waste heat boiler heating surface suspension structure, comprise: waste heat boiler, heating surface, preheater, boiler structure, rapping apparatus, sleeve pipe, the described heating surface that is arranged on waste heat boiler inside is set to the structure vertical with boiler structure, and described rapping apparatus is arranged on the position near the heating surface surface, and described vertically disposed heating surface is fixed by the sleeve pipe that cooperates with its external diameter.
Described heating surface is a tubular structure, is set to up and down reciprocatingly tortuous serpentine configuration, and its upper bend near boiler structure of heating surface partly is suspended on the boiler structure.
Described up and down reciprocatingly tortuous heating surface can be arranged on same plane, also can be arranged on Different Plane, the trend of the boiler structure of suspension pot heating surface and the trend on heating surface suspended end plane are consistent, parallel to each other between described each heating surface that is arranged on waste heat boiler inside, and between the heating surface of each tubulose apart from one another by.
The more than one bellmouth that increases gradually to external structure internally is set on the sleeve pipe of described fixedly heating surface, the taper spacer pin of installation and its respective outer side edges in the bellmouth, spacer pin is set to the structure to the casing inner diameter extension.
The utility model also relates to a kind of rapping apparatus of cement kiln tail waste heat boiler heating surface suspension structure, and described rapping apparatus is arranged on from the position below the heating surface medium position, and its best is provided with the lower end that the position is a heating surface.
Described rapping apparatus comprises beater, the rapping apparatus holder, fixed axis, the below of described heating surface lower end is provided with the connecting axle near the heating surface lower end, the projection that interts in each heating surface lower end is set on the connecting axle, described rapping apparatus holder is connected with the heating surface lower end, extends to the position between per two projections; Described beater knocks on connecting axle.
Described connecting axle can be arranged on and extend the waste heat boiler body, beater rapping by machinery control and manpower control is being extended on the connecting axle of waste heat boiler, described rapping apparatus can be provided with at the flexure plane place of each heating surface lower end, also can be provided with at the flexure plane place every a heating surface lower end.
Boiler heating surface adopts suspended structure of the present invention, and the flow direction of waste gas is that level is passed through the heating surface in the stove, and its beneficial effect that brings is mainly:
The one, can reduce fouling of heating surface, service life of equipment prolongs; The 2nd, compare vertical boiler, can reduce the quantity of heating surface rapping apparatus, reduce system's inleakage, heat exchange efficiency improves greatly; The 3rd, the maintenance workload of boiler obviously reduces.
Description of drawings
Below expressed content of each width of cloth accompanying drawing in the specification of the present utility model and the mark among the figure are briefly explained:
Fig. 1 is the integral arrangement schematic diagram of the utility model cement kiln tail waste heat boiler heating surface suspension structure;
Fig. 2 is a heating surface suspension structure formula intention of the present utility model;
Fig. 3 is sleeve pipe of the present utility model and heating surface syndeton schematic diagram;
Fig. 4 is the fixing structure for amplifying schematic diagram of heat-transfer surface of spacer pin on the sleeve pipe shown in Figure 3;
Fig. 5 is the structural representation of rapping apparatus of the present utility model;
Be labeled as among the figure: 1, waste heat boiler; 2, positioning pipe; 3, positioning pipe; 4, heating surface; 5, connecting axle; 6, preheater; 7, boiler structure; 8, beater; 9, rapping apparatus, 10, the rapping apparatus holder; 11, fixed axis; 12, fixing card; 13, jackshaft; 14, sleeve pipe; 15, projection; 16, spacer pin.
The specific embodiment
Contrast accompanying drawing below, by description, the effect of the mutual alignment between the shape of the specific embodiment of the present utility model such as related each member, structure, the each several part and annexation, each several part and operation principle etc. are described in further detail embodiment.
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, the utility model is a kind of cement kiln tail waste heat boiler heating surface suspension structure, comprise: waste heat boiler 1, heating surface 4, preheater 6, boiler structure 7, rapping apparatus 9, sleeve pipe 15, the described heating surface 4 that is arranged on waste heat boiler 1 inside are set to the structure vertical with boiler structure 7, described rapping apparatus 9 is arranged on the position near heating surface 4 surfaces, and described vertically disposed heating surface 4 is fixing by the sleeve pipe 14 that cooperates with its external diameter.
Described heating surface 4 is a tubular structure, is set to up and down reciprocatingly tortuous serpentine configuration, and heating surface 4 its upper bend near boiler structure 7 partly are suspended on the boiler structure 7.
Described up and down reciprocatingly tortuous heating surface 4 can be arranged on same plane, also can be arranged on Different Plane, the trend of the boiler structure 7 of suspension pot heating surface 4 and the trend on heating surface 4 suspended end planes are consistent, parallel to each other between described each heating surface 4 that is arranged on waste heat boiler 1 inside, and separated by a distance mutually between the heating surface 4 of each tubulose.
The more than one bellmouth that increases gradually to external structure internally is set on the sleeve pipe 14 of described fixedly heating surface 4, the taper spacer pin 15 of installation and its respective outer side edges in the bellmouth, spacer pin 15 is set to the structure to the extension of sleeve pipe 14 internal diameters.
The utility model also relates to a kind of rapping apparatus of cement kiln tail waste heat boiler heating surface suspension structure, and described rapping apparatus 9 is arranged on from the position below heating surface 4 medium positions, and its best is provided with the lower end that the position is a heating surface 4.
Described rapping apparatus 9 comprises beater 8, rapping apparatus holder 10, fixed axis 11, the below of described heating surface 4 lower ends is provided with the connecting axle 5 near heating surface 4 lower ends, the projection 15 that interts in each heating surface 4 lower ends is set on the connecting axle 5, described rapping apparatus holder 10 is connected with heating surface 4 lower ends, extends to the position between per two projections 15; Described beater 8 knocks on connecting axle 5.
Described connecting axle 5 can be arranged on and extend waste heat boiler 1 body, beater 8 rappings of controlling by machinery control and manpower are on the connecting axle 5 that extends waste heat boiler 1, described rapping apparatus 9 can be provided with at the flexure plane place of each heating surface 4 lower end, also can be provided with at the flexure plane place every heating surface 4 lower ends.
Clinker production line kiln tail boiler adopts frame structure, and heating surface 4 is hung vertically on the boiler structure 7 of boiler internal, and the exhaust gas entrance of boiler is followed successively by superheater to waste gas outlet, evaporimeter.
Heating surface 4 of the present utility model adopts snakelike light pipe, adopts stagger arrangement to arrange that boiler evaporator and superheater are connected by header respectively between snakelike light pipe and the snakelike light pipe.The heating surface lower end is a free end, and rapping apparatus 9 is connected with it, and causes boiler body 1 outside.The flow direction of waste gas is the heating surface 4 that level is passed through boiler internal, and its advantage one is to reduce heating surface 4 dust stratifications, the 2nd, can reduce the quantity of rapping apparatus, and the minimizing system leaks out, and has improved the heat exchange efficiency of boiler greatly.
In conjunction with the accompanying drawings the utility model has been carried out exemplary description above; obviously the concrete realization of the utility model is not subjected to the restriction of above-mentioned concrete mode; as long as the various improvement of having adopted method design of the present utility model and technical scheme to carry out; or without change design of the present utility model and technical scheme directly applied to other occasions, all fall in the protection domain of the present utility model.