Air preheater for thermal power plant

Abstract

The utility model discloses an air preheater for a thermal power plant, which relates to the technical field related to thermal power plants, and comprises a flange plate body and a heat conduction tank body, the top end of the flange plate body is welded with the bottom end of a rectangular shell I, an adjusting mechanism is arranged in the rectangular shell I, and the adjusting mechanism adjusts the height of the thermal power plant according to the height of the thermal power plant. The air suction position is adjusted, convenience of connection and adjustment of different types of thermal power plants is met, a heat transfer mechanism is arranged in the heat conduction tank, thermal combustion waste gas is injected into the heat transfer mechanism, and harmful substances in the waste gas are adsorbed and filtered while the sucked air is heated through the waste gas. The arc-shaped cover and the second rectangular shell are pulled, so that the second rectangular shell vertically moves in the first rectangular shell, the height of the arc-shaped cover is adjusted, then the suction height is adjusted and controlled according to the use environment, and suction gas pollution caused by the fact that the suction height is flush with the chimney is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field related to thermal power plants, in particular to an air preheater for a thermal power plant. Background Art

[0002] The air preheater is a preheating device that improves the heat exchange performance of the boiler and reduces heat loss. The function of the air preheater is to transfer the heat carried by the flue gas discharged from the tail flue of the boiler to the air before entering the boiler through the heat sink, and preheat the air to a certain temperature.

[0003] The current air preheater is not adjustable in size during use, which results in the air being inhaled being polluted by smoke generated by combustion when the air preheater is installed in a thermal power plant. In addition, the air preheater and the heated part are integrated, which can cause dust to leak in and cause pollution. Summary of the Invention

[0004] The purpose of the utility model is to provide an air preheater for a thermal power plant to solve the above-mentioned defects caused by the prior art.

[0005] An air preheater for a thermal power plant comprises a flange body and a heat-conducting tank body. The top of the flange body is welded to the bottom end of a rectangular shell. An adjustment mechanism is provided inside the rectangular shell. The adjustment mechanism adjusts the position of air intake according to the height of the thermal power plant to meet the convenience of connection and adjustment for different types of thermal power plants. A heat-conducting tank body is provided inside the heat-conducting tank body. The heat transfer mechanism injects thermal combustion exhaust gas, heats the inhaled air through the exhaust gas, and at the same time, absorbs and filters harmful substances in the exhaust gas before discharging it into the atmosphere.

[0006] Preferably, the adjustment mechanism includes a rectangular shell one, a rectangular shell two, a fastener, a curved cover and a fan. The interior of the rectangular shell one is connected through the rectangular shell two, an curved cover is provided directly above the rectangular shell two, the interior of the curved cover is connected to the fan, fasteners are connected through both sides of the rectangular shell one, and the outer side of the rectangular shell one is fitted with a heat-conducting tank body.

[0007] Preferably, the rectangular shell 1 is connected to the outer side of the rectangular shell 2 by symmetrically penetrating fasteners.

[0008] Preferably, the heat transfer mechanism includes an exhaust pipe fitting, a heat-conducting tank body, a purification filler, a flat iron piece, a guide groove, a slider and a fastening hole. The exhaust pipe fitting is arranged through the top of the heat-conducting tank body, the purification filler is arranged inside the heat-conducting tank body, the guide grooves are distributed in a rectangular shape inside the heat-conducting tank body, a fastening hole is opened through one side of the heat-conducting tank body, a slider is connected to the outside of the guide groove, a flat iron piece is welded to one side of the slider, and the purification filler is connected directly below the flat iron piece.

[0009] Preferably, the heat-conducting tank body is connected to the outer side of the slider via a guide groove symmetrically arranged inside.

[0010] Preferably, an air inlet pipe is connected through the bottom end of the heat-conducting tank body.

[0011] Preferably, the sliding block is connected to the top end of the purification filler via a flat iron piece provided on one side.

[0012] Compared with the prior art, the utility model has the following advantages:

[0013] 1. Pull the arc cover and the rectangular shell 2 to make the rectangular shell 2 move vertically inside the rectangular shell 1, adjust the height of the arc cover, and then adjust and control the height of the suction according to the use environment to avoid the suction gas pollution caused by the suction height being flush with the chimney. The rectangular shell 1 is separated from the heat conduction tank to avoid dust leakage in the flue gas.

[0014] 2. During operation, according to the size of the purification filler, pull the flat iron piece so that it slides on the outside of the guide groove and adjusts the height of the flat iron piece to facilitate the positioning of purification fillers of different sizes. When the flue gas is injected into the interior of the heat-conducting tank for heat transfer, the purification filler is used to filter the dust and harmful substances in the flue gas and then discharge them to prevent dust from penetrating into the interior of the rectangular shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the front cross-section structure of the arc cover in the present utility model.

[0017] Figure 3 It is a schematic diagram of the side cross-section structure of the heat-conducting tank body in the present utility model.

[0018] Figure 4 This is a schematic diagram of the top-sectional structure of the heat-conducting tank body in the present utility model.

[0019] Figure 5 This is a bottom view of the flange body in the present invention.

[0020] in:

[0021] 1. Flange body; 2. Rectangular shell 1; 3. Rectangular shell 2; 4. Fasteners; 5. Arc cover; 6. Adjustment mechanism; 7. Exhaust pipe fitting; 8. Inlet pipe fitting; 9. Heat transfer mechanism; 10. Heat-conducting tank body; 11. Fan; 12. Purification filler; 13. Flat iron piece; 14. Guide groove; 15. Slider; 16. Fastening hole. DETAILED DESCRIPTION

[0022] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0023] like Figures 1 to 5 As shown, an air preheater for a thermal power plant includes a flange body 1 and a heat-conducting tank body 10. The top of the flange body 1 is welded to the bottom end of a rectangular shell 2. An adjusting mechanism 6 is provided inside the rectangular shell 2. The adjusting mechanism 6 adjusts the position of air intake according to the height of the thermal power plant to meet the convenience of connection and adjustment of different types of thermal power plants. A heat-conducting tank body 10 is provided inside the heat-conducting tank body 10. The heat transfer mechanism 9 injects thermal combustion exhaust gas, heats the inhaled air through the exhaust gas, and at the same time, absorbs and filters harmful substances in the exhaust gas before discharging it into the atmosphere.

[0024] In this embodiment, the adjustment mechanism 6 includes a rectangular shell 2, a rectangular shell 3, a fastener 4, a curved cover 5 and a fan 11. The interior of the rectangular shell 2 is connected through the rectangular shell 2, and the curved cover 5 is arranged directly above the rectangular shell 2 3. The interior of the curved cover 5 is connected to the fan 11. The fasteners 4 are connected through both sides of the rectangular shell 2. The outer side of the rectangular shell 2 is fitted with a heat-conducting tank body 10. The top of the fan 11 is positioned by the curved cover 5, and the fan 11 is covered and protected.

[0025] In this embodiment, the rectangular shell 1 2 is connected to the outer side of the rectangular shell 2 3 by symmetrically penetrating fasteners 4. The fasteners 4 are used to position the rectangular shell 2 3 and the rectangular shell 1 2, and the height of the rectangular shell 2 3 is adjusted.

[0026] In this embodiment, the heat transfer mechanism 9 includes an exhaust pipe 7, a heat-conducting tank body 10, a purification filler 12, a flat iron piece 13, a guide groove 14, a slider 15 and a fastening hole 16. The exhaust pipe 7 is arranged at the top of the heat-conducting tank body 10. The purification filler 12 is arranged inside the heat-conducting tank body 10. The guide grooves 14 are distributed in a rectangular shape inside the heat-conducting tank body 10. A fastening hole 16 is opened on one side of the heat-conducting tank body 10. The outer side of the guide groove 14 is connected to the slider 15. A flat iron piece 13 is welded to one side of the slider 15. The purification filler 12 is connected directly below the flat iron piece 13. The gas is purified by arranging multiple groups of purification fillers 12.

[0027] In this embodiment, the heat-conducting tank body 10 is connected to the outer side of the slider 15 via a guide groove 14 symmetrically arranged inside. The flat iron piece 13 is positioned by opening the guide groove 14 on one side of the heat-conducting tank body 10 .

[0028] In this embodiment, an air intake pipe 8 is connected through the bottom end of the heat-conducting tank body 10 , and external air is injected into the interior of the heat-conducting tank body 10 through the air intake pipe 8 .

[0029] In this embodiment, the slider 15 is connected to the top of the purification filler 12 via a flat iron piece 13 provided on one side. The slider 15 positions one side of the flat iron piece 13 and the shape of the purification filler 12.

[0030] The practical application of this thermal power plant air preheater includes the following work contents:

[0031] Step 1: The operator first installs the flange body 1 on the top of the corresponding equipment, and according to the required air intake height, pulls the arc cover 5 and the rectangular shell 2 3 to make the rectangular shell 2 3 move vertically inside the rectangular shell 1 2, adjusts the height of the arc cover 5, and then inserts the fastener 4 into the interior of the rectangular shell 1 2, locks the outer sides of the rectangular shell 1 2 and the rectangular shell 2 3, and selects the corresponding size of purification filler 12 according to the preheating requirements;

[0032] Step 2: Install multiple groups of purification fillers 12 directly inside the heat-conducting tank body 10, and pull the flat iron piece 13. The flat iron piece 13 slides along the outer shape of the guide groove 14 through the slider 15 provided on one side. Position the flat iron piece 13 and the top of the purification filler 12. Insert the bolt into the fastening hole 16, and lock the connection between the slider 15 and the guide groove 14 with the bolt to complete the positioning of the multiple groups of purification fillers 12.

[0033] Step 3: The exhaust gas generated by the combustion furnace is directly injected into the interior of the heat-conducting tank body 10 through the air inlet pipe 8, and the exhaust gas is purified by the purification filler 12 inside the heat-conducting tank body 10. The purified exhaust gas is then discharged through the exhaust pipe 7 provided on one side, and the heat in the exhaust gas is used to heat the surface of the rectangular shell 2;

[0034] Step 4: At the same time, the fan 11 is turned on to inject the pure air from the outside into the interior of the rectangular shell 1 2 and the rectangular shell 2 3 through the through hole at the top of the arc cover 5. The rectangular shell 1 2 and the rectangular shell 2 3 are heated by the heat of the heat-conducting tank 10, and the accumulated heat is released to the air, thereby reducing their own temperature and injecting the air into the interior of the boiler.

[0035] Therefore, the embodiments disclosed above are only illustrative in all respects and are not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are included in the present invention.

Claims

1. An air preheater for a thermal power plant, characterized by: The invention comprises a flange body (1) and a heat-conducting tank body (10), wherein the top end of the flange body (1) is welded to the bottom end of a rectangular shell (2), and an adjusting mechanism (6) is provided inside the rectangular shell (2). The adjusting mechanism (6) adjusts the position of air intake according to the height of the thermal power plant, so as to meet the convenience of connection and adjustment of different types of thermal power plants. The heat-conducting tank body (10) is provided inside a heat transfer mechanism (9), and the heat transfer mechanism (9) injects the combustion exhaust gas, heats the inhaled air through the exhaust gas, and absorbs and filters the harmful substances in the exhaust gas before discharging it into the atmosphere.

2. The air preheater for a thermal power plant according to claim 1, characterized in that: The regulating mechanism (6) comprises a rectangular shell (2), a rectangular shell (3), a fastener (4), an arc cover (5) and a fan (11); the interior of the rectangular shell (2) is connected to the rectangular shell (3); the arc cover (5) is arranged directly above the rectangular shell (3); the interior of the arc cover (5) is connected to the fan (11); both sides of the rectangular shell (2) are connected to the fastener (4); the outer side of the rectangular shell (2) is connected to the heat-conducting tank (10).

3. The air preheater for a thermal power plant according to claim 2, characterized in that: The rectangular shell one (2) is connected to the outer side of the rectangular shell two (3) via symmetrically penetrating fasteners (4).

4. The air preheater for a thermal power plant according to claim 1, characterized in that: The heat transfer mechanism (9) comprises an exhaust pipe (7), a heat-conducting tank body (10), a purification filler (12), a flat iron piece (13), a guide groove (14), a slider (15) and a fastening hole (16); the exhaust pipe (7) is arranged through the top of the heat-conducting tank body (10); the purification filler (12) is arranged inside the heat-conducting tank body (10); the guide grooves (14) are distributed in a rectangular shape inside the heat-conducting tank body (10); a fastening hole (16) is opened through one side of the heat-conducting tank body (10); the outer side of the guide groove (14) is connected to the slider (15); the flat iron piece (13) is welded to one side of the slider (15); and the purification filler (12) is connected directly below the flat iron piece (13).

5. The air preheater for a thermal power plant according to claim 4, characterized in that: The heat-conducting tank body (10) is connected to the outer side of the slider (15) via a guide groove (14) symmetrically arranged inside.

6. The air preheater for a thermal power plant according to claim 1, characterized in that: An air inlet pipe (8) is connected through the bottom end of the heat-conducting tank body (10).

7. The air preheater for a thermal power plant according to claim 4, characterized in that: The sliding block (15) is connected to the top end of the purification filler (12) via a flat iron piece (13) provided on one side.

Images