CN111013377A - Independently adjustable anti-blocking structure and method for four-bin air preheater - Google Patents
Independently adjustable anti-blocking structure and method for four-bin air preheater Download PDFInfo
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- CN111013377A CN111013377A CN201911137472.0A CN201911137472A CN111013377A CN 111013377 A CN111013377 A CN 111013377A CN 201911137472 A CN201911137472 A CN 201911137472A CN 111013377 A CN111013377 A CN 111013377A
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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Abstract
The invention discloses an anti-clogging structure and a method of an independently adjustable four-bin air preheater, which relate to the field of air preheaters and aim at the problem of poor anti-clogging effect of the existing air preheater, the scheme is provided, the structure comprises an air preheater shell, a motor is arranged in the air preheater shell, a second cylindrical block is fixedly arranged at the outer end of the motor, two second fixed fan-shaped plates are symmetrically and fixedly arranged at the left end and the right end of the second cylindrical block, the other ends of the two second fixed fan-shaped plates are fixedly connected with the inner wall of the air preheater shell, a rotating shaft is fixedly connected at the upper end of a power output shaft of the motor, a first cylindrical block is rotatably arranged at the top of the rotating shaft, two first fixed fan-shaped plates are symmetrically and fixedly arranged at the left end and the right end of the first cylindrical block, the other ends of the two first fixed fan-shaped plates are fixedly connected with the inner wall of the air preheater shell, the first fixed fan-, the invention has the advantages of simple and convenient operation, high automation degree, good protection effect, convenient adjustment and high practicability.
Description
Technical Field
The invention relates to the field of air preheaters, in particular to an anti-blocking structure and method of an independently adjustable four-bin air preheater.
Background
With the increasing strictness of the national environmental protection standard, the coal-fired unit is successively subjected to ultralow emission modification. On the other hand, for the purpose of renewable energy consumption, the thermal power generating unit participates in deep peak regulation, and the unit operates frequently under variable load. Due to the two factors, the ammonia escape amount of the SCR denitration system is high, and the escaped ammonia and SO generated by burning coal in flue gas3The reaction takes place to form Ammonium Bisulfate (ABS). When the flue gas passes through the air preheater, the temperature of the flue gas is gradually reduced, ammonium bisulfate in the flue gas is condensed and adhered with fly ash, the fly ash is deposited in the air preheater to form blockage, the heat exchange effect of a shell of the air preheater is influenced, a motor, a heat exchange plate and the like are corroded at low temperature, and the safe operation of a unit is seriously influenced.
Disclosure of Invention
The invention provides an anti-blocking structure and method for an independently adjustable four-bin air preheater, and aims to solve the problems that in the working process of the existing air preheater, when smoke passes through the air preheater, the temperature of the smoke is gradually reduced, ammonium bisulfate in the smoke is condensed, fly ash is adhered to and deposited in the air preheater to form blockage, the heat exchange effect of a shell of the air preheater is influenced, a motor, a heat exchange plate and the like are corroded at low temperature, and the safe operation of a unit is influenced in serious cases.
The technical scheme adopted by the invention for solving the problems is as follows: an anti-blocking structure of an independently adjustable four-bin air preheater comprises an air preheater shell and is characterized in that a motor is installed inside the air preheater shell, a second cylindrical block is fixedly installed at the outer end of the motor, two second fixed sector plates are symmetrically and fixedly installed at the left end and the right end of the second cylindrical block, the other ends of the two second fixed sector plates are fixedly connected with the inner wall of the air preheater shell, a rotating shaft is fixedly connected to the upper end of a power output shaft of the motor, a first cylindrical block is rotatably installed at the top of the rotating shaft, two first fixed sector plates are symmetrically and fixedly installed at the left end and the right end of the first cylindrical block, the other ends of the two first fixed sector plates are fixedly connected with the inner wall of the air preheater shell, the first fixed sector plates correspond to the second fixed sector plates, and a plurality of heat storage elements are uniformly and fixedly installed on the outer wall of the rotating shaft, the heat storage elements are distributed at the outer end of the rotating shaft in an annular array mode, the heat storage elements are located between a first fixed sector plate and a second fixed sector plate, the front sides of a first cylindrical block and a second cylindrical block are fixedly connected with two connecting plates, a first movable sector plate and a second movable sector plate are hinged to the four connecting plates through movable shafts respectively in a movable mode, the first movable sector plate is located on the left side of the second movable sector plate, the inner walls of the front sides of the two first movable sector plates and the inner walls of the front sides of the two second movable sector plates are fixedly connected through connecting rods, the connecting rods are located on the front side of the air preheater shell, temperature probes are fixedly installed on the inner wall of the air preheater shell and located between the first fixed sector plate and the second movable sector plate and located on the right side of the rotating shaft, a controller is fixedly arranged on the vertical surface of the left side of the air preheater shell, a display screen is fixedly arranged on the left side of the front end of the air preheater shell, an air inlet pipe is fixedly arranged on the right side of the bottom end of the air preheater shell and positioned on the front side of the second fixed sector plate, the other end of the air inlet pipe is fixedly installed and communicated with a circulating fan, a ventilating pipe is fixedly installed on the right side of the upper end of the air preheater shell and positioned in front of the first fixed sector plate, the other end of the ventilation pipe is fixedly installed and communicated with a heat exchange box, the heat exchange box is communicated with a circulating fan through a connecting pipe, the upper end of the heat exchange box is fixedly provided with a smoke inlet pipe which penetrates through the interior of the heat exchange box, the upper end of the smoke inlet pipe is fixedly connected with an electromagnetic valve, and the air inlet pipe and the ventilation pipe are located between the first fixed sector plate and the second movable sector plate and located on the right side of the rotating shaft.
Furthermore, the rotating shaft is rotatably connected with the first cylindrical block through a bearing.
Furthermore, the top end of the front side of each of the first movable sector plate and the second movable sector plate is provided with a puller bolt in a threaded manner, and the bottom end of the puller bolt is tightly propped against the upper end of the air preheater shell.
Furthermore, the temperature detecting head is electrically connected with the controller, and the controller is electrically connected with the circulating fan, the motor, the electromagnetic valve and the display screen.
Furthermore, movable gaps are arranged between the first movable sector plate, the second movable sector plate and the connecting rod and the air preheater shell.
The working method of the anti-blocking structure of the independently adjustable four-bin air preheater is characterized in that in the using process, a motor drives a rotating shaft and a heat storage element to rotate, a half area of the rear end of an air preheater shell is positioned in a flue of a coal-fired boiler of a power plant, the upper end and the lower end of a smoke inlet pipe are communicated with the flue of the coal-fired boiler of the power plant, hot smoke is conveniently led in to pass through a heat exchange box, a worker sets an extreme value for a controller, a temperature probe monitors smoke temperature information on the inner side of the air preheater shell and transmits the monitored temperature information to the controller, the controller converts the received temperature information into data, the data is transmitted to a display screen firstly, the display screen displays the real-time temperature of the smoke, the data is compared with the extreme value, when the temperature is less than the extreme value, the temperature of components in the air preheater shell is too low, and the temperature of the smoke is, the controller starts the electromagnetic valve and the circulating fan, the electromagnetic valve is opened, hot flue gas in a flue of the coal-fired boiler of the power plant enters the flue pipe, the hot flue gas enters from the upper end of the flue pipe and exits from the bottom end of the flue pipe and still returns to the flue pipe, the temperature in the heat exchange box is raised by the flue pipe in the heat exchange box under the action of high-temperature hot flue gas, and the circulating fan works to guide hot air in the heat exchange box into the inner side of the shell of the air preheater through the air inlet pipe, so that the heating treatment of the interior of the shell of the air preheater is realized; when the temperature displayed by the display screen is too low, the output of the heat energy of the heat exchange box is improved by controlling the opening size of the electromagnetic valve, so that the temperature inside the shell of the air preheater is improved, and the condensation of ammonium bisulfate in the shell of the air preheater is reduced; when the temperature displayed by the display screen is too high, the electromagnetic valve is closed, the temperature of the outlet air is reduced, the heat efficiency of the boiler is improved, and the ammonium bisulfate condensed in the shell of the air preheater is swept by hot air blown out by the air inlet pipe; the staff unscrews the puller bolt, alright rotate the position of first activity sector plate and second activity sector plate and adjust, and then adjust the space area of first activity sector plate and second activity sector plate between the air preheater shell front end, adjust the area size between second activity sector plate and the first fixed sector plate, can change the size of ventilation pipe to the inside heat absorption area of air preheater.
Compared with the prior art, the invention has the following advantages and effects: according to the invention, by arranging the circulating fan, the ventilation pipe, the heat exchange box, the smoke inlet pipe, the controller, the electromagnetic valve and the air inlet pipe, the heating of the smoke in the air preheater shell can be realized, so that the problems that fogging or condensation of hydrogen sulfate in the air preheater shell is avoided, ammonium bisulfate in the smoke is condensed, fly ash is adhered to the fly ash and deposited in the air preheater shell to form blockage, the heat exchange effect of the air preheater shell is influenced, the motor, the heat exchange plate and the like are corroded at low temperature, and the safe operation of a unit is seriously influenced are solved; the jacking bolt is arranged, so that the first movable sector plate and the second movable sector plate can be fixedly locked, and the distance and the position between the first movable sector plate and the second movable sector plate can be conveniently adjusted; the automation degree of the invention can be greatly improved by arranging the temperature detecting head, the controller and the display screen.
Drawings
Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.
Fig. 2 is a partial sectional view of an air preheater housing in an embodiment of the present invention.
FIG. 3 is a partial top view of an embodiment of the present invention at the housing of the air preheater.
Fig. 4 is a partial left side view of a connection at the first movable sector plate in an embodiment of the invention.
Fig. 5 is a partial left side view of a connection at a second movable sector plate in an embodiment of the invention.
In the figure: the device comprises an air preheater shell 1, a circulating fan 2, a ventilation pipe 3, a heat exchange box 4, a smoke inlet pipe 5, a controller 6, a tightening bolt 7, a connecting plate 8, a first cylindrical block 9, a first fixed sector plate 10, a rotating shaft 11, a first movable sector plate 12, a connecting rod 13, a second movable sector plate 14, a temperature probe 15, a heat storage element 16, a second fixed sector plate 17, a motor 18, an electromagnetic valve 19, a second cylindrical block 20, an air inlet pipe 21 and a display screen 22.
Detailed Description
The present invention will be described in further detail below by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not to be construed as limiting the present invention.
Referring to fig. 1-5, the embodiment provides an anti-clogging structure for an independently adjustable four-bin air preheater, which includes an air preheater housing 1, a motor 18 is installed inside the air preheater housing 1, a second cylindrical block 20 is fixedly installed at an outer end of the motor 18, two second fixed sector plates 17 are symmetrically and fixedly installed at left and right ends of the second cylindrical block 20, the other ends of the two second fixed sector plates 17 are fixedly connected with an inner wall of the air preheater housing 1, a rotating shaft 11 is fixedly connected to an upper end of a power output shaft of the motor 18, a first cylindrical block 9 is rotatably installed at a top of the rotating shaft 11, two first fixed sector plates 10 are symmetrically and fixedly installed at left and right ends of the first cylindrical block 9, the other ends of the two first fixed sector plates 10 are fixedly connected with the inner wall of the air preheater housing 1, the first fixed sector plates 10 correspond to the second fixed sector plates 17, a plurality of heat storage elements 16 are uniformly and fixedly installed on the outer wall of the rotating shaft 11, the heat storage elements 16 are distributed at the outer end of the rotating shaft 11 in an annular array, the heat storage elements 16 are positioned between a first fixed sector plate 10 and a second fixed sector plate 17, two connecting plates 8 are fixedly connected to the front sides of a first cylindrical block 9 and a second cylindrical block 20, a first movable sector plate 12 and a second movable sector plate 14 are movably hinged to the four connecting plates 8 through movable shafts respectively, the first movable sector plate 12 is positioned on the left side of the second movable sector plate 14, the inner walls of the front sides of the two first movable sector plates 12 and the inner walls of the front sides of the two second movable sector plates 14 are fixedly connected through connecting rods 13, so that the two first movable sector plates 12 or the two second movable sector plates 14 can rotate at the same time to adjust the angle, and the connecting rods 13 are positioned on the front side of the air preheater shell 1, the inner wall of the air preheater shell 1 is fixedly provided with a temperature detecting head 15, the temperature detecting head 15 is positioned between a first fixed sector plate 10 and a second movable sector plate 14, the temperature detecting head 15 is positioned on the right side of a rotating shaft 11, a controller 6 is fixedly arranged on the left vertical surface of the air preheater shell 1, the left side of the front end of the air preheater shell 1 is fixedly provided with a display screen 22, the right side of the bottom end of the air preheater shell 1 is fixedly provided with an air inlet pipe 21 positioned on the front side of a second fixed sector plate 17, the other end of the air inlet pipe 21 is fixedly provided with and communicated with a circulating fan 2, the right side of the upper end of the air preheater shell 1 is fixedly provided with a ventilating pipe 3 positioned on the front side of the first fixed sector plate 10, the other end of the ventilating pipe 3 is fixedly provided with and communicated with a heat exchange box 4, the heat exchange box 4 is communicated with the circulating fan 2 through a connecting pipe, the upper end of the heat exchange box 4 is fixedly provided with, the upper end and the lower end of the smoke inlet pipe 5 are communicated with a flue of a power plant boiler, hot smoke in the flue can penetrate through the heat exchange box 4, the temperature of circulating smoke in the air inlet pipe 21 can be conveniently increased, the temperature of the hot smoke blown out by the air inlet pipe 21 is increased, components in the air preheater shell 1 are heated and heated, the upper end of the smoke inlet pipe 5 is fixedly connected with an electromagnetic valve 19, the electromagnetic valve 19 is convenient to control the hot smoke to enter and exit, the air inlet pipe 21 and the ventilation pipe 3 are located between the first fixed sector plate 10 and the second movable sector plate 14 and located on the right side of the rotating shaft 11, and the temperature of the components in the air preheater shell 1 can be conveniently increased before entering the flue.
The rotating shaft 11 is rotatably connected with the first cylindrical block 9 through a bearing, and the design facilitates stable operation of the rotating shaft 11. The jacking bolt 7 is installed at the upper end of the front side of the first movable sector plate 12 and the upper end of the front side of the second movable sector plate 14 in a threaded mode, the bottom end of the jacking bolt 7 is tightly pressed against the upper end of the air preheater shell 1, the design facilitates angle rotation adjustment of the first movable sector plate 12 and the second movable sector plate 14, and meanwhile positioning and locking can also be conducted. The temperature detecting head 15 is electrically connected with the controller 6, the controller 6 is electrically connected with the circulating fan 2, the motor 18, the electromagnetic valve 19 and the display screen 22, and the design facilitates automatic control of the circulating fan 2, the motor 18 and the electromagnetic valve 19. And movable gaps are arranged between the first movable sector plate 12, the second movable sector plate 14 and the connecting rod 13 and the air preheater shell 1, so that the first movable sector plate 12 and the second movable sector plate 14 can rotate to adjust the angle conveniently.
The implementation process comprises the following steps: in the using process, the motor 18 drives the rotating shaft 11 and the heat storage element 16 to rotate, the half area of the rear end of the shell 1 of the air preheater is positioned in the flue of the coal-fired boiler of the power plant (the air preheater is used on the flue of the coal-fired boiler of the power plant and is a mature process in the prior art, and can be understood by a person skilled in the art, so that the detailed description of other structures is not needed under the condition of not influencing the structural integrity of the invention), the upper end and the lower end of the smoke inlet pipe 5 are both communicated with the flue of the coal-fired boiler of the power plant, so that hot smoke is conveniently led to pass through the heat exchange box 4, a worker can set an extreme value for the controller 6, the controller 6 is an SC200 universal controller, the temperature probe 15 can monitor the temperature information of the smoke inside of the shell 1 of the air preheater and transmit the monitored temperature information to the controller 6, the controller 6 converts the received temperature information into data, and firstly, the display screen 22 can display the real-time temperature of the flue gas, compare the data with an extreme value, when the temperature is less than the extreme value, the temperature of the components in the air preheater shell 1 is too low, the temperature of the flue gas is also too low, the controller 6 starts the electromagnetic valve 19 and the circulating fan 2, opens the electromagnetic valve 19, hot flue gas in a flue of a coal-fired boiler of the power plant enters the smoke inlet pipe 5, the hot flue gas enters from the upper end of the smoke inlet pipe 5, the hot flue gas is discharged from the bottom end of the smoke inlet pipe 5 and still returns to the flue, the temperature in the heat exchange box 4 is raised by the smoke inlet pipe 5 in the heat exchange box 4 under the action of high-temperature hot flue gas, and the circulating fan 2 can guide hot air in the heat exchange box 4 into the inner side of the air preheater shell 1 through the air inlet pipe 21 to realize the temperature raising of; when the temperature displayed by the display screen 22 is too low, the output of the heat energy of the heat exchange box 4 is increased by controlling the opening size of the electromagnetic valve 19, so that the temperature inside the air preheater shell 1 is increased, and the condensation of ammonium bisulfate in the air preheater shell 1 is reduced; when the temperature displayed by the display screen 22 is too high, the electromagnetic valve 19 can be closed, the temperature of the outlet air is reduced, the heat efficiency of the boiler is improved, and the ammonium bisulfate condensed in the shell 1 of the air preheater is swept by hot air blown out by the air inlet pipe 21; the worker unscrews the puller bolt 7, and then the position of the first movable sector plate 12 and the second movable sector plate 14 can be adjusted in a rotating mode, so that the space area between the first movable sector plate 12 and the second movable sector plate 14 at the front end of the air preheater shell 1 is adjusted, the area between the second movable sector plate 14 and the first fixed sector plate 10 is adjusted, and the size of the heat absorption area of the ventilation pipe 3 in the air preheater can be changed. Through setting up circulating fan 2, ventilation pipe 3, heat transfer case 4, advance tobacco pipe 5, controller 6, solenoid valve 19 and air-supply line 21, can realize heating the inside flue gas of air preheater shell 1, and then avoid having in the air preheater shell 1 fogging or hydrogen sulfate according to condensing, ammonium bisulfate in the flue gas condenses, it is the flying dust to adhere to, the deposit is in the air preheater shell 1, form the jam, influence the heat transfer effect of air preheater shell 1, lead to motor 18 and heat transfer board etc. by low temperature corrosion, influence the problem of unit safe operation when serious. The jacking bolt 7 is arranged, so that the first movable sector plate 12 and the second movable sector plate 14 can be fixedly locked, and the distance and the position between the first movable sector plate 12 and the second movable sector plate 14 can be conveniently adjusted; the degree of automation of the present invention is greatly enhanced by the provision of the temperature sensing head 15, the controller 6 and the display screen 22. The invention has the advantages of simple and convenient operation, high automation degree, good protection effect, convenient adjustment and high practicability.
Those not described in detail in this specification are well within the skill of the art.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the equipment or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first," "second," "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, features defined as "first," "second," "first," "second," etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Although the present invention has been described with reference to the above embodiments, it should be understood that the scope of the present invention is not limited thereto, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and scope of the present invention.
Claims (6)
1. An anti-blocking structure of an independently adjustable four-bin air preheater comprises an air preheater shell (1) and is characterized in that a motor (18) is installed inside the air preheater shell (1), a second cylindrical block (20) is fixedly installed at the outer end of the motor (18), two second fixed sector plates (17) are symmetrically and fixedly installed at the left end and the right end of the second cylindrical block (20), the other ends of the two second fixed sector plates (17) are fixedly connected with the inner wall of the air preheater shell (1), a rotating shaft (11) is fixedly connected to the upper end of a power output shaft of the motor (18), a first cylindrical block (9) is rotatably installed at the top of the rotating shaft (11), two first fixed sector plates (10) are symmetrically and fixedly installed at the left end and the right end of the first cylindrical block (9), the other ends of the two first fixed sector plates (10) are fixedly connected with the inner wall of the air preheater shell (1), the heat storage device is characterized in that the first fixed sector plate (10) and the second fixed sector plate (17) correspond to each other, a plurality of heat storage elements (16) are uniformly and fixedly mounted on the outer wall of the rotating shaft (11) and distributed at the outer end of the rotating shaft (11) in an annular array manner, the heat storage elements (16) are located between the first fixed sector plate (10) and the second fixed sector plate (17), the front sides of the first cylindrical block (9) and the second cylindrical block (20) are fixedly connected with two connecting plates (8), the four connecting plates (8) are respectively hinged with a first movable sector plate (12) and a second movable sector plate (14) through movable shafts in a movable manner, the first movable sector plate (12) is located on the left side of the second movable sector plate (14), the front side inner walls of the first movable sector plate (12) are fixedly connected with the front side inner walls of the second movable sector plate (14) through connecting rods (13), the air preheater comprises an air preheater shell (1), a connecting rod (13), a temperature detecting head (15), a first fixed fan-shaped plate (10), a second movable fan-shaped plate (14), a display screen (22), a ventilation pipe (3), a second fixed fan-shaped plate (10), a controller (6), a circulating fan (2), a display screen (22), a ventilation pipe (3), a temperature detecting head (15), a temperature detecting head and a temperature detecting head, wherein the connecting rod (13) is located on the front side of the air preheater shell (1), the temperature detecting head (15) is located between the first fixed fan-shaped plate (10) and the second movable fan-shaped plate (14), the temperature detecting head (15) is located on the right side of a rotating shaft (11), the controller (6) is fixedly mounted on the vertical face of the left side of the air preheater shell (1), the display screen (22) is fixedly mounted on the left side of the front end of the air preheater shell (1), the bottom right side of the air preheater shell (1, the other end fixed mounting and the intercommunication of ventilation pipe (3) have heat transfer case (4), heat transfer case (4) are linked together through connecting pipe and circulating fan (2), the upper end fixed mounting of heat transfer case (4) has into tobacco pipe (5), advance inside that tobacco pipe (5) run through heat transfer case (4), advance upper end fixedly connected with solenoid valve (19) of tobacco pipe (5), air-supply line (21) and ventilation pipe (3) all are located between first fixed sector plate (10) and second activity sector plate (14), and are located the right side of pivot (11).
2. The anti-clogging structure for the independently adjustable air preheater with four separate bins according to claim 1, wherein the rotating shaft (11) is rotatably connected with the first cylindrical block (9) through a bearing.
3. The anti-blocking structure for the independently adjustable four-bin air preheater according to claim 1, wherein the top ends of the front sides of the first movable sector plate (12) and the second movable sector plate (14) are both provided with a tightening bolt (7) in a threaded manner, and the bottom end of the tightening bolt (7) is tightened against the upper end of the air preheater shell (1).
4. The anti-clogging structure of the independently adjustable air preheater with four separate bins according to claim 1, wherein the temperature probe (15) is electrically connected to a controller (6), and the controller (6) is electrically connected to the circulating fan (2), the motor (18), the electromagnetic valve (19) and the display screen (22).
5. The anti-clogging structure of the independently adjustable air preheater with four separate bins according to claim 1, wherein a movable gap is formed between each of the first movable sector plate (12), the second movable sector plate (14) and the connecting rod (13) and the air preheater shell (1).
6. A working method of an anti-clogging structure of an independently adjustable four-bin air preheater according to any one of claims 1-5, characterized in that, in the using process, a motor (18) drives a rotating shaft (11) and a heat storage element (16) to rotate, a half area of the rear end of an air preheater shell (1) is positioned in the flue of a coal-fired boiler of a power plant, the upper end and the lower end of a smoke inlet pipe (5) are communicated with the flue of the coal-fired boiler of the power plant, so that hot smoke can be introduced to pass through a heat exchange box (4), a worker sets an extreme value for a controller (6), a temperature detecting head (15) monitors the temperature information of the smoke inside the air preheater shell (1) and transmits the monitored temperature information to the controller (6), the controller (6) converts the received temperature information into data, firstly transmits the data to a display screen (22), and the display screen (22) displays the real-time temperature of the smoke, comparing the data with the extreme value, when the temperature is lower than the extreme value, the temperature of the internal part of the air preheater shell (1) is over low, the temperature of the smoke is over low, the controller (6) starts the electromagnetic valve (19) and the circulating fan (2), the electromagnetic valve (19) is opened, the hot smoke in the flue of the coal-fired boiler of the power plant enters the smoke inlet pipe (5), the hot smoke enters from the upper end of the smoke inlet pipe (5), the smoke is discharged from the bottom end of the smoke inlet pipe (5) and still returns to the flue, the smoke inlet pipe (5) in the heat exchange box (4) raises the temperature in the heat exchange box (4) under the action of high-temperature hot smoke, the circulating fan (2) works to guide the hot air in the heat exchange box (4) into the inner side of the air preheater shell (1) through the air inlet pipe (21), and the temperature raising treatment of the inner part of the air preheater shell (1) is; when the temperature displayed by the display screen (22) is too low, the output of the heat energy of the heat exchange box (4) is increased by controlling the opening size of the electromagnetic valve (19), so that the temperature inside the air preheater shell (1) is increased, and the condensation of ammonium bisulfate in the air preheater shell (1) is reduced; when the temperature displayed by the display screen (22) is too high, the electromagnetic valve (19) is closed, the temperature of outlet air is reduced, the thermal efficiency of the boiler is improved, and the ammonium bisulfate condensed in the shell (1) of the air preheater is swept by hot air blown out by the air inlet pipe (21); a worker unscrews the puller bolt (7), and the positions of the first movable sector plate (12) and the second movable sector plate (14) can be adjusted in a rotating mode, so that the space area between the front end of the air preheater shell (1) of the first movable sector plate (12) and the front end of the second movable sector plate (14) can be adjusted, the area between the second movable sector plate (14) and the first fixed sector plate (10) can be adjusted, and the size of the heat absorption area of the ventilation pipe (3) in the air preheater can be changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911137472.0A CN111013377A (en) | 2019-11-19 | 2019-11-19 | Independently adjustable anti-blocking structure and method for four-bin air preheater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911137472.0A CN111013377A (en) | 2019-11-19 | 2019-11-19 | Independently adjustable anti-blocking structure and method for four-bin air preheater |
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| CN111013377A true CN111013377A (en) | 2020-04-17 |
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| CN201911137472.0A Pending CN111013377A (en) | 2019-11-19 | 2019-11-19 | Independently adjustable anti-blocking structure and method for four-bin air preheater |
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| CN (1) | CN111013377A (en) |
Cited By (1)
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| CN114110645A (en) * | 2021-10-28 | 2022-03-01 | 曾吉武 | Four-bin air heat exchanger |
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