Rotary air pre-heater capable of removing dust through vibration

Abstract

The rotary air pre-heater comprises a rotor, a plurality of radial partition plates are arranged in the rotor, each radial partition plate is provided with a plurality of heat transfer elements, each heat transfer element comprises a plectrum plate made of heat-resistant spring steel, and the plate face of each plectrum plate is obliquely arranged. One horizontal side edge of each plectrum plate is fixedly connected with the radial partition plate, the other horizontal side edge of each plectrum plate is fixedly connected with the vibration heat absorption block, the vibration heat absorption block is arranged in the fan-shaped bin in a suspended mode, and ventilation holes are formed in the plate face of each plectrum plate. And the suspended end of each plectrum plate can generate reciprocating vibration under the action of air flow penetrating through the fan-shaped chamber. According to the rotary air preheater capable of removing the dust through the vibration, dust deposition and scale deposition on the surface of a heat transfer element of the rotary air preheater can be avoided, or dust deposition and scale deposition on the surface of the heat transfer element of the rotary air preheater can be removed in time, and the heat exchange efficiency of the rotary air preheater with the heating surface is remarkably improved.

Description

Technical Field

[0001] The utility model relates to a vibration dust-cleaning rotary air preheater. Background Art

[0002] At present, the dust accumulated on the inner wall of the chamber of the heating surface rotary air preheater and on the surface of the heat transfer element is generally cleaned by blowing with pressurized gas. However, when the dust blockage is serious, the space between the heat transfer element and the partition is often filled with dust. Since the air flow capacity of the upper and lower air flow channels is greatly reduced, even if high-pressure gas is used for blowing, the cleaning effect of the dust blocked between the heat transfer element and the partition will be poor, thereby reducing the heat exchange efficiency of the heating surface rotary air preheater and causing great energy waste. Utility Model Content

[0003] The utility model aims to provide a vibrating ash-cleaning rotary air preheater which can avoid dust and scale accumulation on the surface of the heat transfer element of the rotary air preheater, or timely remove the dust and scale accumulation on the surface of the heat transfer element of the rotary air preheater, thereby significantly improving the heat exchange efficiency of the rotary air preheater with a heating surface.

[0004] The utility model discloses a vibrating dust-cleaning rotary air preheater, comprising a rotor, a plurality of radial partitions are arranged inside the rotor, the plurality of radial partitions divide the rotor into a plurality of fan-shaped chambers, a plurality of heat transfer elements are arranged on each radial partition, the rotor comprises an air side and a flue gas side, the upper end of the rotor is a hot end, the lower end is a cold end, the hot end of the rotor is provided with a smoke inlet, a high-pressure primary air outlet and a low-pressure secondary air outlet, the cold end of the rotor is provided with a smoke outlet, a high-pressure primary air inlet and a low-pressure secondary air inlet, the smoke outlet is connected to the smoke inlet via a smoke channel passing through the rotor along the axial direction, the high-pressure primary air inlet is connected to the high-pressure primary air outlet via a high-pressure primary air channel passing through the rotor along the axial direction, and the low-pressure secondary air inlet is connected to the low-pressure secondary air outlet via a low-pressure secondary air channel passing through the rotor along the axial direction The radial partitions are connected to each other, and the side walls on the left and right sides of each radial partition are respectively provided with a plurality of heat transfer elements in horizontal rows and vertical columns and spaced from each other. Each of the heat transfer elements comprises a paddle plate made of heat-resistant spring steel. The plate surface of each paddle plate is respectively inclined, and the plate surface of each paddle plate forms an angle with the vertical direction. A horizontal side edge of each paddle plate is respectively fixedly connected to the radial partition, and the other horizontal side edge of the paddle plate is fixedly connected to the vibration heat absorbing block. The vibration heat absorbing block is suspended in the fan-shaped bin. The side edge of each paddle plate to which the vibration heat absorbing block is fixed is located below the other side edge of the paddle plate. Ventilation holes are provided on the plate surface of each paddle plate. The suspended end of each paddle plate can generate reciprocating vibration under the action of the airflow passing through the fan-shaped chamber.

[0005] Preferably, a flue gas side sonic soot blower is provided above the smoke inlet, the soot blowing port of the flue gas side sonic soot blower is arranged downwardly aligned with the smoke inlet, the flue gas side sonic soot blower is fixed on the frame, and the sonic wave effect emitted by the flue gas side sonic soot blower can make the paddle plate and the vibrating heat absorbing block generate reciprocating vibration;

[0006] A primary wind sound wave soot blower is provided below the high-pressure primary air inlet, the soot blowing port of the primary wind sound wave soot blower is downwardly aligned with the high-pressure primary air inlet, the primary wind sound wave soot blower is fixed on the frame, and the sound waves emitted by the primary wind sound wave soot blower can cause the paddle plate and the vibrating heat absorbing block to generate reciprocating vibrations;

[0007] A secondary air sonic soot blower is provided below the low-pressure secondary air inlet, and the soot blowing port of the secondary air sonic soot blower is arranged downwardly toward the low-pressure secondary air inlet. The secondary air sonic soot blower is fixed on the frame, and the sound waves emitted by the secondary air sonic soot blower can cause the paddle plate and the vibrating heat absorbing block to generate reciprocating vibrations.

[0008] The utility model discloses a vibrating dust-cleaning rotary air preheater, wherein a plurality of heat transfer elements are arranged in horizontal rows and vertical columns and spaced apart from each other on the side walls on the left and right sides of each radial partition, wherein each heat transfer element comprises a paddle plate made of heat-resistant spring steel, wherein the plate surface of each paddle plate is arranged tilted, wherein the plate surface of each paddle plate forms an angle of 20°-45° with the vertical direction, wherein a horizontal side edge of each paddle plate is fixedly connected to the radial partition, wherein the other horizontal side edge of the paddle plate is fixedly connected to the vibrating heat absorbing block, wherein the vibrating heat absorbing block is suspended in the fan-shaped bin, wherein the side edge of each paddle plate fixed with the vibrating heat absorbing block is located below the other side edge of the paddle plate, wherein ventilation holes are arranged on the plate surface of each paddle plate, and the suspended end of each paddle plate can generate reciprocating vibration under the action of the airflow passing through the fan-shaped bin. When in use, the suspended end of each paddle plate can generate reciprocating vibrations under the action of the airflow passing through the fan-shaped chamber, so that the dust on the vibrating heat absorbing block, the paddle plate and the radial partition will be detached in time, thereby preventing dust and dirt from adhering to the vibrating heat absorbing block, the paddle plate and the radial partition, making it difficult for dust and dirt to accumulate on the inner wall of the chamber and the surface of the heat transfer element. Because the dust and dirt on the vibrating heat absorbing block and the paddle plate will fall off during the high-frequency shaking, the vibration-cleaning rotary air preheater of the utility model has the characteristics of avoiding dust and dirt accumulation on the surface of the heat transfer element of the rotary air preheater, or timely removing dust and dirt on the surface of the heat transfer element of the rotary air preheater, and significantly improving the heat exchange efficiency of the heated surface rotary air preheater.

[0009] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1It is a three-dimensional diagram of the rotor part of the vibration-cleaning rotary air preheater of the utility model viewed from top to bottom;

[0011] Figure 2 It is a three-dimensional diagram of the rotor part of the vibration-cleaning rotary air preheater of the utility model viewed from bottom to top;

[0012] Figure 3 This is an enlarged front view of two groups of radial partitions in the vibration-cleaning rotary air preheater of the utility model;

[0013] Figure 4 yes Figure 3 Side view of. DETAILED DESCRIPTION

[0014] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the vibrating dust-cleaning rotary air preheater of the utility model comprises a rotor 2, in which a plurality of radial partitions 1 are arranged, the plurality of radial partitions 1 divide the rotor 2 into a plurality of fan-shaped chambers, each radial partition 1 is provided with a plurality of heat transfer elements, the rotor 2 comprises an air side and a flue gas side, the upper end of the rotor 2 is a hot end, and the lower end is a cold end, the hot end of the rotor 2 is provided with a smoke inlet 3, a high-pressure primary air outlet 4 and a low-pressure secondary air outlet 5, the cold end of the rotor 2 is provided with a smoke outlet 6, a high-pressure primary air inlet 7 and a low-pressure secondary air inlet 8, the smoke outlet 6 is connected to the smoke inlet 3 through a smoke channel axially passing through the rotor 2, the high-pressure primary air inlet 7 is connected to the high-pressure primary air outlet 4 through a high-pressure primary air channel axially passing through the rotor 2, and the low-pressure secondary air inlet 8 is connected to the low-pressure secondary air outlet 5 through a low-pressure secondary air channel axially passing through the rotor 2. The radial partition plates 1 are connected to each other through the channels, and a plurality of heat transfer elements are arranged in horizontal rows and vertical columns on the side walls on the left and right sides of each radial partition plate 1 and spaced from each other. Each heat transfer element comprises a paddle plate 10 made of heat-resistant spring steel. The plate surface of each paddle plate 10 is arranged tilted, and the plate surface of each paddle plate 10 forms an angle with the vertical direction. A horizontal side edge of each paddle plate 10 is fixedly connected to the radial partition plate 1, and the other horizontal side edge of the paddle plate 10 is fixedly connected to a vibration heat absorbing block 11. The vibration heat absorbing block 11 is suspended in the fan-shaped bin. The side edge of each paddle plate 10 on which the vibration heat absorbing block 11 is fixed is located below the other side edge of the paddle plate 10. A ventilation hole 12 is arranged on the plate surface of each paddle plate 10. The suspended end of each paddle plate 10 can generate reciprocating vibration under the action of the airflow passing through the fan-shaped chamber.

[0015] As a further improvement of the present invention, a flue gas side sonic soot blower 13 is provided above the above-mentioned smoke inlet 3, and the soot blowing port of the flue gas side sonic soot blower 13 is arranged downwardly aligned with the smoke inlet 3, and the flue gas side sonic soot blower 13 is fixed on the frame. The sound waves emitted by the flue gas side sonic soot blower 13 can make the paddle plate 10 and the vibrating heat absorbing block 11 produce reciprocating vibrations; the additional application of the flue gas side sonic soot blower 13 helps to more thoroughly remove the accumulated dust on the paddle plate 10 and the vibrating heat absorbing block 11, thereby achieving the purpose of avoiding dust and scale accumulation on the surface of the heat transfer element of the rotary air preheater, or timely removing the dust and scale accumulation on the surface of the heat transfer element of the rotary air preheater, thereby significantly improving the heat exchange efficiency of the heated surface rotary air preheater.

[0016] A primary wind sound wave soot blower 14 is provided below the high-pressure primary air inlet 7, and the soot blowing port of the primary wind sound wave soot blower 14 is arranged downwardly aligned with the high-pressure primary air inlet 7. The primary wind sound wave soot blower 14 is fixed on the frame, and the sound waves emitted by the primary wind sound wave soot blower 14 can make the paddle plate 10 and the vibrating heat absorbing block 11 produce reciprocating vibrations; the additional application of the primary wind sound wave soot blower 14 helps to more thoroughly remove the dust accumulated on the paddle plate 10 and the vibrating heat absorbing block 11, thereby achieving the purpose of avoiding dust and scale accumulation on the surface of the heat transfer element of the rotary air preheater, or timely removing the dust and scale accumulation on the surface of the heat transfer element of the rotary air preheater, and significantly improving the heat exchange efficiency of the heated surface rotary air preheater.

[0017] A secondary air sonic wave soot blower 15 is provided below the low-pressure secondary air inlet 8, and the soot blowing port of the secondary air sonic wave soot blower 15 is downwardly aligned with the low-pressure secondary air inlet 8. The secondary air sonic wave soot blower 15 is fixed on the frame, and the sonic wave effect emitted by the secondary air sonic wave soot blower 15 can make the paddle plate 10 and the vibrating heat absorbing block 11 produce reciprocating vibrations. The additional effect of the secondary air sonic wave soot blower 15 helps to more thoroughly remove the dust accumulation on the paddle plate 10 and the vibrating heat absorbing block 11, thereby achieving the purpose of avoiding dust accumulation and scale accumulation on the surface of the heat transfer element of the rotary air preheater, or timely removing the dust accumulation and scale accumulation on the surface of the heat transfer element of the rotary air preheater, and significantly improving the heat exchange efficiency of the heated surface rotary air preheater.

[0018] The utility model provides a vibrating dust-cleaning rotary air preheater, wherein a plurality of heat transfer elements are arranged in horizontal rows and vertical columns on the side walls on the left and right sides of each radial partition plate 1 and are spaced apart from each other. Each heat transfer element comprises a paddle plate 10 made of heat-resistant spring steel. The plate surface of each paddle plate 10 is arranged tilted, and the plate surface of each paddle plate 10 forms an angle of 20°-45° with the vertical direction. One horizontal side edge of each paddle plate 10 is fixedly connected to the radial partition plate 1, and the other horizontal side edge of the paddle plate 10 is fixedly connected to a vibrating heat absorbing block 11. The vibrating heat absorbing block 11 is suspended in the fan-shaped bin. The side edge of each paddle plate 10 on which the vibrating heat absorbing block 11 is fixed is located below the other side edge of the paddle plate 10. A ventilation hole 12 is arranged on the plate surface of each paddle plate 10. The suspended end of each paddle plate 10 can generate reciprocating vibration under the action of the airflow passing through the fan-shaped bin. When in use, since the suspended end of each paddle plate 10 can generate reciprocating vibrations under the action of the airflow passing through the fan-shaped chamber, the dust on the vibrating heat absorbing block 11, the paddle plate 10 and the radial partition 1 will be promptly detached, thereby preventing dust and dirt from adhering to the vibrating heat absorbing block 11, the paddle plate 10 and the radial partition 1, making it difficult for dust and dirt to accumulate on the inner wall of the chamber and the surface of the heat transfer element. Because the dust and dirt on the vibrating heat absorbing block 11 and the paddle plate 10 will fall off during the high-frequency shaking, the vibration-cleaning rotary air preheater of the utility model has the characteristics of avoiding dust and dirt accumulation on the surface of the heat transfer element of the rotary air preheater, or promptly removing dust and dirt on the surface of the heat transfer element of the rotary air preheater, and significantly improving the heat exchange efficiency of the heated surface rotary air preheater.

[0019] The embodiments described above are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering and technical personnel in the field shall fall within the protection scope determined by the claims of the present invention.

Claims

1. A vibrating dust-cleaning rotary air preheater, comprising a rotor (2), wherein a plurality of radial partitions (1) are arranged inside the rotor (2), wherein the plurality of radial partitions (1) divide the rotor (2) into a plurality of fan-shaped chambers, wherein each radial partition (1) is provided with a plurality of heat transfer elements, wherein the rotor (2) comprises an air side and a flue gas side, wherein the upper end of the rotor (2) is a hot end, and the lower end is a cold end, wherein the hot end of the rotor (2) is provided with a flue gas inlet (3), a high-pressure primary air outlet (4) and a low-pressure secondary air outlet (5), wherein the rotor (2 ) is provided with a smoke outlet (6), a high-pressure primary air inlet (7) and a low-pressure secondary air inlet (8) at the cold end thereof, the smoke outlet (6) is connected to the smoke inlet (3) via a smoke passage axially passing through the rotor (2), the high-pressure primary air inlet (7) is connected to the high-pressure primary air outlet (4) via a high-pressure primary air passage axially passing through the rotor (2), the low-pressure secondary air inlet (8) is connected to the low-pressure secondary air outlet (5) via a low-pressure secondary air passage axially passing through the rotor (2), and is characterized in that: A plurality of heat transfer elements are arranged in horizontal rows and vertical columns on the side walls on the left and right sides of each radial partition (1) and are spaced apart from each other. Each of the heat transfer elements comprises a paddle plate (10) made of heat-resistant spring steel. The plate surface of each paddle plate (10) is arranged tilted. The plate surface of each paddle plate (10) forms an angle with the vertical direction. One horizontal side edge of each paddle plate (10) is fixedly connected to the radial partition (1). The other horizontal side edge of the paddle plate (10) is fixedly connected to a vibration heat absorbing block (11). The vibration heat absorbing block (11) is suspended in the fan-shaped bin. The side edge of each paddle plate (10) to which the vibration heat absorbing block (11) is fixed is located below the other side edge of the paddle plate (10). A ventilation hole (12) is arranged on the plate surface of each paddle plate (10). The suspended end of each paddle plate (10) can generate reciprocating vibration under the action of airflow passing through the fan-shaped bin.

2. The vibration-cleaning rotary air preheater according to claim 1 is characterized in that: A flue gas side sonic soot blower (13) is provided above the smoke inlet (3), the soot blowing port of the flue gas side sonic soot blower (13) is arranged downwardly aligned with the smoke inlet (3), the flue gas side sonic soot blower (13) is fixed on the frame, and the sonic wave action emitted by the flue gas side sonic soot blower (13) can cause the paddle plate (10) and the vibrating heat absorbing block (11) to generate reciprocating vibrations; A primary wind sound wave soot blower (14) is provided below the high-pressure primary air inlet (7), the soot blowing port of the primary wind sound wave soot blower (14) is arranged to face downward toward the high-pressure primary air inlet (7), the primary wind sound wave soot blower (14) is fixed on the frame, and the sound waves emitted by the primary wind sound wave soot blower (14) can cause the paddle plate (10) and the vibrating heat absorbing block (11) to generate reciprocating vibrations; A secondary air sonic wave soot blower (15) is provided below the low-pressure secondary air inlet (8), and the soot blowing port of the secondary air sonic wave soot blower (15) is arranged to face downward toward the low-pressure secondary air inlet (8). The secondary air sonic wave soot blower (15) is fixed on the frame, and the sonic wave effect emitted by the secondary air sonic wave soot blower (15) can cause the paddle plate (10) and the vibrating heat absorbing block (11) to generate reciprocating vibrations.

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