A kind of desulfurization fume emission switching device
Technical field
The utility model relates to the back desulfurization fume emission of a kind of Coal,steam plant with FGD system's absorption tower processing switching device.
Background technology
Desulfurizer has been installed in most of in recent years thermal power plants; And do not establish Smoke-heating device (GGH); Mostly power plant has set up transition smoke stack emission flue gas absorbing cat head in the anticorrosion transformation process of main chimney, to guarantee the normal operation of unit during the main chimney anticorrosion.In order to recover the logical cigarette of main chimney, made cover plate again and carried out shutoff at absorption cat head exhanst gas outlet.The mounting means of cover plate is: at first will hang held on ground with the transition chimney after support separates through large-scale crane, the cover plate that will rest ground then winches to and carries out flange bolt connection sealing shutoff on the cat head exhanst gas outlet, and is time-consuming, very inconvenient.
Because state's inner chimney operating condition is complicated; Flue-gas temperature changes greatly, and the flue gas after the desulfurization produces the strong acid corrosion to chimney, and present domestic chimney anticorrosion technology is not very ripe; Main chimney has been included the range of management of desulphurization plant in; The anticorrosive coat that after funnel inside is accomplished in main chimney anticorrosion transformation is necessary to check maintenance, thereby main chimney needs and flue gas is isolated, and has so caused it normally to move between the boiler exhaust gas with unit and has conflicted; In order to solve this contradiction switching that a kind of switching device makes flue gas between main chimney and transition chimney, carry out the short time discharging of changing its course need be set, realize the purpose of this isolation maintenance.
The utility model content
The technical problem that the utility model will solve is: a kind of desulfurization fume emission switching device is provided, mainly solves exhanst gas outlet and realize the unlatching of short time or the technical problem of closing.
The utility model solves the technical scheme that its technical problem adopted: a kind of desulfurization fume emission switching device; Have cover plate, guide rail; Described cover plate is connected with pulley through adjusting screw(rod); Described pulley is installed on the guide rail, and described cover plate moves horizontally along guide rail through pulley, and described cover plate moves through the vertical direction of adjusting screw(rod) along cover plate.
Further, described guide rail bottom is connected with and is used for outer fixing support.
Further, described cover plate is provided with waling, and described cover plate through adjusting screw(rod) with the pulley ways of connecting is: described waling is connected with pulley through adjusting screw(rod).
Further; Described cover plate is provided with 2 walings; Described guide rail quantity is 2; 2 guide rails are parallel to each other, and 2 pulleys are installed on the every guide rail, and described cover plate through adjusting screw(rod) with the pulley ways of connecting is: the end, two ends of 2 walings is connected with 4 pulleys through adjusting screw(rod) respectively.
Further, be provided with the horizontal reinforcement more than between said 2 walings.
Further, described cover plate bottom surface sealing surface is lined with anticorrosive coat.
Further, described cover plate is circular.
Further, described adjusting screw(rod) comprises screw rod and nut, and described cover plate moves along the vertical direction of cover plate after through the nut of regulating adjusting screw(rod).
Further, the material of described cover plate and guide rail is a carbon steel.
Further, described guide rail two ends are provided with spacing rubber block.
The beneficial effect of the utility model is: the desulfurization fume emission switching device of the utility model is installed in when using outside the outlet of top, absorption tower threeway exhaust pass; Be used for opening or closing the threeway exhaust pass; When main chimney need carry out anticorrosion transformation, cover plate moved up through the vertical direction of adjusting screw(rod) along cover plate, and cover plate moves horizontally along guide rail through pulley; And then the outlet that can open the threeway exhaust pass; Make the threeway exhaust pass to be connected with the transition chimney, fume emission is discharged from the transition chimney, and main chimney can carry out anticorrosion transformation.After main chimney anticorrosion transformation is accomplished, remove the transition chimney, cover plate moves down through the vertical direction of adjusting screw(rod) along cover plate, and cover plate moves horizontally along guide rail through pulley, and then can close the outlet of threeway exhaust pass, and flue gas is normally discharged from main chimney.Therefore, the utility model has solved exhanst gas outlet and has realized the unlatching of short time or the technical problem of closing.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further specified.
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the sketch map of installing and using of the utility model;
Fig. 3 is the enlarged diagram at A place among Fig. 2;
Wherein: 1. cover plate, 2. guide rail, 3. support, 4. waling, 5. pulley, 6. adjusting screw(rod), 7. laterally reinforcement, 8. threeway exhaust pass.
The specific embodiment
Combine accompanying drawing that the utility model is further described now.The sketch map that these accompanying drawings are simplification is only explained the basic structure of the utility model in a schematic way, so it only shows the formation relevant with the utility model.
Shown in Figure 3 like Fig. 1 Fig. 2, a kind of desulfurization fume emission switching device has cover plate 1, guide rail 2; Guide rail 2 bottoms are connected with and are used for outer fixing support 3; Cover plate 1 is provided with 2 walings 4, and guide rail 2 quantity are 2, and 2 guide rails 2 are parallel to each other; 2 pulleys 5 are installed on the every guide rail 2; The end, two ends of 2 walings 4 is connected with 4 pulleys 5 through adjusting screw(rod) 6 respectively, and cover plate 1 moves horizontally along guide rail 2 through pulley 5, and cover plate 1 moves through the vertical direction of adjusting screw(rod) 6 along cover plate 1.Be provided with 2 horizontal reinforcement 7 between 2 walings 4.Cover plate 1 bottom surface sealing surface is lined with anticorrosive coat.Cover plate 1 is circular.Adjusting screw(rod) 6 comprises screw rod and nut, and cover plate 1 moves along the vertical direction of cover plate 1 after through the nut of regulating adjusting screw(rod) 6.The material of cover plate 1 and guide rail 2 is a carbon steel.Guide rail 2 two ends are provided with spacing rubber block.
When the desulfurization fume emission switching device of the utility model uses; Support 3 through guide rail 2 is installed in outside 8 outlets of top, absorption tower threeway exhaust pass, is used for opening or closes threeway exhaust pass 8 exporting, when main chimney need carry out anticorrosion transformation; Cover plate 1 moves up through the vertical direction of adjusting screw(rod) 6 along cover plate 1; Cover plate 1 moves horizontally along guide rail 2 through pulley 5, and then can open the outlet of threeway exhaust pass 8, makes threeway exhaust pass 8 to be connected with the transition chimney; Fume emission is discharged from the transition chimney, and main chimney can carry out anticorrosion transformation.After main chimney anticorrosion transformation is accomplished; Remove the transition chimney, cover plate 1 moves down through the vertical direction of adjusting screw(rod) 6 along cover plate 1, and cover plate 1 moves horizontally along guide rail 2 through pulley 5; And then can close the outlet of threeway exhaust pass 8, flue gas is normally discharged from main chimney.Therefore, the utility model has solved exhanst gas outlet and has realized the unlatching of short time or the technical problem of closing.
With above-mentioned desirable embodiment according to the utility model is enlightenment, and through above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this utility model technological thought.The technical scope of this utility model is not limited to the content on the specification, must confirm its technical scope according to the claim scope.