CN114110645A

CN114110645A - Four-bin air heat exchanger

Info

Publication number: CN114110645A
Application number: CN202111261139.8A
Authority: CN
Inventors: 曾吉武
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-03-01

Abstract

The invention relates to the technical field of heat exchanger equipment, and discloses a four-bin air heat exchanger which comprises a fixed support shaft, wherein a heat exchange box is movably sleeved in the middle of the fixed support shaft, four heat exchange chambers are uniformly arranged in the heat exchange box, the cross sections of the heat exchange chambers are rectangular, movable shafts are movably arranged in the heat exchange box and positioned in the heat exchange chambers, and a connecting rod is movably connected between every two adjacent movable shafts. Through the setting of heat transfer room and heat transfer board for utilize high temperature flue gas and low temperature air respectively at heat transfer in-process pressure push heat transfer case rotatory, avoid the energy resource consumption of external power source, effectively improve the contact time and the pressure of two kinds of gases and heat transfer board simultaneously, increase heat transfer time on the one hand, improve heat exchange efficiency, on the other hand, gas pressure in the heat transfer room when increasing the heat transfer improves the temperature of high temperature flue gas, increase the temperature of being heated of loose axle then, improve heat transfer effect.

Description

Four-bin air heat exchanger

Technical Field

The invention relates to the technical field of heat exchanger equipment, in particular to a four-bin air heat exchanger.

Background

The air preheater widely used in the utility boiler has two types, namely a tubular type air preheater and a rotary type air preheater, and the heat transfer mode of the tubular type air preheater is as follows: the heat is continuously transferred from the flue gas to the air through the pipe wall, the heat is transferred in an indirect heat transfer mode, the rotary air preheater transfers the heat in a regeneration mode, the flue gas and the air alternately flow through the heating surface, when the flue gas flows through, the heat is transferred from the flue gas to the heating surface, the temperature of the heating surface is increased, and the heat is accumulated; when air flows through again, the heat accumulated by the heating surface is released to the air, and at present, along with the increase of steam parameters and unit capacity of a power plant boiler, the volume and the height of a tubular air preheater are increased due to the increase of the heating surface, so that the boiler arrangement is influenced. Therefore, the prior large unit adopts a rotary air preheater with compact structure and light weight, but the rotary air preheater has the following defects:

the existing air preheater is generally driven by a motor, high-temperature flue gas and low-temperature air rapidly flow through a heating surface, contact with a heat exchange pipe in the flowing process and transfer heat, but the process is short, the heat exchange effect is poor, a large amount of heat is directly lost and heat exchange is not performed in time, and further the heat exchange efficiency is low.

Disclosure of Invention

The invention provides a four-bin air heat exchanger which has the advantages of low energy consumption and high heat exchange rate and solves the problems in the background art.

The invention provides the following technical scheme: a four-bin air heat exchanger comprises a fixed support shaft, wherein a heat exchange box is movably sleeved at the middle of the fixed support shaft, four heat exchange chambers are uniformly arranged in the heat exchange box, the cross sections of the heat exchange chambers are rectangular, movable shafts are movably arranged in the heat exchange box and positioned in the heat exchange chambers, a connecting rod is movably connected between every two adjacent movable shafts, a heat exchange plate is movably arranged on each movable shaft, the bottom end of each heat exchange plate is movably arranged on the inner wall of each heat exchange chamber, the heat exchange plate and the horizontal plane form an included angle of 45-60 degrees, an upper cover plate and a lower cover plate are respectively and fixedly arranged at the top and the bottom of the fixed support shaft, a flue gas inlet and an air inlet are respectively and fixedly connected to the upper cover plate, the central points of the cover plates above the flue gas inlet and the air inlet are obliquely and symmetrically distributed, and a flue gas outlet and an air outlet are respectively and fixedly connected to the lower cover plate, the flue gas outlet and the air outlet are respectively distributed in a central point oblique symmetry mode of the lower cover plate, the flue gas inlet and the flue gas outlet are located on the same vertical plane, the shape and the area of the connector are the same as the cross section of the heat exchange chamber, the air inlet and the air outlet are located on the same vertical plane, the shape and the area of the connector are the same as the cross section of the heat exchange chamber, and the upper surface and the bottom surface of the heat exchange box are respectively movably connected with the bottom surface of the upper cover plate and the upper surface of the lower cover plate.

Preferably, the left surface and the right surface of the heat exchange plate are respectively and uniformly fixedly provided with a heat exchange block, and the heat exchange block is a semi-cylinder.

Preferably, the top and the bottom of the outer side of the heat exchange box are respectively and fixedly sleeved with a sealing plate, and the two sealing plates are respectively and movably sleeved with the upper sealing cover plate and the lower sealing cover plate.

Preferably, the movable shaft located at the leftmost side of the heat exchange chamber is fixedly connected with a spring, the bottom surface of the upper sealing cover plate is uniformly and fixedly provided with a deflector rod located between the air inlet and the flue gas inlet, and the bottom end of the deflector rod is movably connected with the heat exchange plate.

The invention has the following beneficial effects:

1. through the setting of heat transfer room and heat transfer board for utilize high temperature flue gas and low temperature air respectively at heat transfer in-process pressure push heat transfer case rotatory, avoid the energy resource consumption of external power source, effectively improve the contact time and the pressure of two kinds of gases and heat transfer board simultaneously, increase heat transfer time on the one hand, improve heat exchange efficiency, on the other hand, gas pressure in the heat transfer room when increasing the heat transfer improves the temperature of high temperature flue gas, increase the temperature of being heated of loose axle then, improve heat transfer effect.

2. Through the setting of spring and driving lever, make the heat transfer case when rotatory, the heat transfer board after will having been heated rotates the below of driving lever, block and the striking to the heat transfer board by the driving lever, pick up the heat transfer board simultaneously, and it is rotatory, then under the effect of connecting rod, the heat transfer board with the driving lever contact breaks away from the driving lever, and under the effect of spring, make loose axle and heat transfer case bump, and then make the heat transfer board take place the vibration of different degrees, shake down the dirt that condenses on it, accomplish the cleanness to the heat transfer board, effectively prevent simultaneously that the heat of heat transfer board from scattering and disappearing, guarantee thermal effective transmission, and avoid the dirt to drop under the blowing of low temperature air, in the low temperature air after getting into the heat transfer, improve the cleanliness factor of low temperature air.

Drawings

FIG. 1 is a schematic side view of the structure of the present invention;

FIG. 2 is a schematic top view of the structure of the present invention;

FIG. 3 is a schematic front view of the structure of the present invention;

FIG. 4 is an enlarged view of the point A in FIG. 1.

In the figure: 1. fixing a support shaft; 2. a heat exchange box; 3. a heat exchange chamber; 4. a movable shaft; 5. a connecting rod; 6. a heat exchange plate; 7. a heat exchange block; 8. a sealing plate; 9. an upper sealing cover plate; 10. a flue gas inlet; 11. an air inlet; 12. a lower sealing cover plate; 13. a flue gas outlet; 14. an air outlet; 15. a spring; 16. a deflector rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a four-divided bin air heat exchanger comprises a fixed support shaft 1, a heat exchange box 2 is movably sleeved at the middle part of the fixed support shaft 1, four heat exchange chambers 3 are uniformly arranged inside the heat exchange box 2, the cross section of each heat exchange chamber 3 is rectangular, movable shafts 4 are movably arranged inside the heat exchange box 2 and positioned in the heat exchange chambers 3, a connecting rod 5 is movably connected between every two adjacent movable shafts 4, a heat exchange plate 6 is movably arranged on each movable shaft 4, the bottom end of each heat exchange plate 6 is movably arranged with the inner wall of the heat exchange chamber 3, the heat exchange plate 6 forms an included angle of 45-60 degrees with the horizontal plane, an upper cover plate 9 and a lower cover plate 12 are respectively and fixedly arranged at the top and the bottom of the fixed support shaft 1, a flue gas inlet 10 and an air inlet 11 are respectively and fixedly connected on the upper cover plate 9, the flue gas inlet 10 and the air inlet 11 are obliquely and symmetrically distributed with the center point of the upper cover plate 9, the lower sealing cover plate 12 is fixedly connected with a smoke outlet 13 and an air outlet 14 respectively, the smoke outlet 13 and the air outlet 14 are distributed in an oblique symmetry manner from the center point of the lower sealing cover plate 12 respectively, the smoke inlet 10 and the smoke outlet 13 are positioned on the same vertical plane, the shape and the area of the connecting port are the same as the section of the heat exchange chamber 3, the air inlet 11 and the air outlet 14 are positioned on the same vertical plane, the shape and the area of the connecting port are the same as the section of the heat exchange chamber 3, the upper surface and the bottom surface of the heat exchange box 2 are movably connected with the bottom surface of the upper sealing cover plate 9 and the upper surface of the lower sealing cover plate 12 respectively, high-temperature smoke and low-temperature smoke enter the heat exchange chamber 3 from the smoke inlet 10 and the air inlet 11 respectively, when the high-temperature smoke enters the heat exchange chamber 3, the high-temperature smoke is blocked by the oblique heat exchange plate 6, so that the high-temperature smoke exerts pressure on the heat exchange plate 6, and then the high-temperature smoke pushes the heat exchange box 2 to rotate through the heat exchange plate 6, in the process, the high-temperature flue gas fully contacts the heat exchange plate 6, the heat exchange plate 6 is heated, the heated heat exchange plate 6 enters the lower part of the air inlet 11 along with the rotation of the heat exchange box 2 and contacts with the low-temperature air, and the low-temperature flue gas is blocked by the heat exchange plate 6 after entering the heat exchange chamber 3, so that the low-temperature air continuously applies pressure to the movable shaft 4 to force the heat exchange box 2 to rotate, and in the pressure applying process, heat exchange is completed, so that the air pressure in the gas heat exchange process is utilized to push the heat exchange box 2 to rotate, the energy consumption of an external driving source is reduced, the contact time and the contact pressure of two gases and the heat exchange plate 6 are effectively improved, on one hand, the heat exchange time is prolonged, the heat exchange efficiency is improved, on the other hand, the gas pressure in the contact process is increased, the temperature of the high-temperature flue gas is also increased, and the heating temperature of the heat exchange plate 6 is increased, the heat exchange effect is improved; the heat exchange resistance blocks 7 are uniformly and fixedly arranged on the left surface and the right surface of the heat exchange plate 6 respectively, and the heat exchange resistance blocks 7 are semi-cylinders, so that the resistance of the flue gas and low-temperature air conduction can be effectively improved, the retention time of the flue gas and low-temperature air in the heat exchange chamber 3 is increased, the heat exchange effect is enhanced, and more heat can be accumulated to facilitate the transfer of more heat; the top and the bottom of the outer side of the heat exchange box 2 are respectively fixedly sleeved with a sealing plate 8, and the two sealing plates 8 are respectively movably sleeved with an upper sealing cover plate 9 and a lower sealing cover plate 12, so that the sealing effect on the heat exchange box 2 is enhanced, two gases entering the heat exchange chamber 3 are prevented from leaking, and the sealing property is improved; the spring 15 is fixedly connected on the movable shaft 4 positioned at the leftmost side of the heat exchange chamber 3, the shifting lever 16 is uniformly and fixedly installed on the bottom surface of the upper cover sealing plate 9 and positioned between the air inlet 11 and the flue gas inlet 10, the bottom end of the shifting lever 16 is movably connected with the heat exchange plate 6, when the heat exchange box 2 rotates, the heat exchange plate 6 which is heated is rotated to the lower part of the shifting lever 16, the shifting lever 16 blocks and impacts the heat exchange plate 6, meanwhile, the heat exchange plate 6 is picked up and rotated, then, under the action of the connecting rod 5, the heat exchange plate 6 which is contacted with the shifting lever 16 is separated from the shifting lever 16, under the action of the spring 15, the movable shaft 4 is collided with the heat exchange box 2, further, the heat exchange plate 6 is vibrated at different degrees, further, dust and dirt condensed on the heat exchange plate is vibrated, the cleaning of the heat exchange plate 6 is completed, meanwhile, the heat dissipation of the heat exchange plate 6 is effectively reduced, and the effective transmission of heat is ensured, meanwhile, dust and dirt are prevented from falling off under the blowing of low-temperature air and entering the low-temperature air after heat exchange, and the cleanliness of the low-temperature air is improved.

The working principle is that high-temperature flue gas and low-temperature flue gas respectively enter a heat exchange chamber 3 from a flue gas inlet 10 and an air inlet 11, when the high-temperature flue gas enters the heat exchange chamber 3, the high-temperature flue gas is blocked by an inclined heat exchange plate 6, so that the high-temperature flue gas exchanges heat and pushes the heat exchange plate 6, then the high-temperature flue gas pushes a heat exchange box 2 to rotate through the heat exchange plate 6, the high-temperature flue gas fully contacts with the heat exchange plate 6 in the process and finishes heating the heat exchange plate 6, firstly, the heated heat exchange plate 6 contacts and collides with a deflector rod 16 along with the rotation of the heat exchange box 2, then, the deflector rod 16 picks up the heat exchange plate 6 to rotate, then, under the action of a connecting rod 5, the heat exchange plate 6 contacting with the deflector rod 16 is separated from the deflector rod 16, and under the action of a spring 15, the movable shaft 4 collides with the heat exchange box 2, so that the heat exchange plate 6 vibrates in different degrees, and then shake the dust and dirt condensed on it down, finish the cleaning to the heat-exchanging plate 6, the heat-exchanging box 2 continues to rotate, make the heat-exchanging plate 6 after heating enter the inferior part of the air intake 11, contact with low-temperature air, the low-temperature flue gas is stopped by the heat-exchanging plate 6 after entering the heat-exchanging chamber 3 too, so the low-temperature air continues to exert pressure to the heat-exchanging plate 6, force the heat-exchanging box 2 to rotate, and in the course of exerting pressure, finish the heat exchange, so utilize the atmospheric pressure in the heat exchange process of the gas to promote the rotation of the heat-exchanging box 2, the high-temperature flue gas and low-temperature air finishing heat exchange are discharged from the flue gas outlet 13 and air outlet 14 separately afterwards.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a four minutes storehouse air heat exchanger, includes fixed back shaft (1), its characterized in that: the heat exchange box (2) is movably sleeved at the middle of the fixed supporting shaft (1), four heat exchange chambers (3) are uniformly arranged inside the heat exchange box (2), the cross section of each heat exchange chamber (3) is rectangular, movable shafts (4) are movably arranged inside the heat exchange box (2) and positioned in the heat exchange chambers (3), a connecting rod (5) is movably connected between every two adjacent movable shafts (4), a heat exchange plate (6) is movably arranged on each movable shaft (4), the bottom end of each heat exchange plate (6) is movably arranged on the inner wall of each heat exchange chamber (3), the heat exchange plate (6) forms an included angle of 45-60 degrees with the horizontal plane, an upper cover plate (9) and a lower cover plate (12) are respectively and fixedly arranged at the top and the bottom of the fixed supporting shaft (1), and a flue gas inlet (10) and an air inlet (11) are respectively and fixedly connected to the upper cover plate (9), the central point skew symmetric distribution of closing cap board (9) more than flue gas inlet (10) and air intlet (11), down close cap board (12) go up fixedly connected with exhanst gas outlet (13) and air outlet (14) respectively, central point skew symmetric distribution of closing cap board (12) is followed respectively in exhanst gas outlet (13) and air outlet (14), flue gas inlet (10) and exhanst gas outlet (13) are located same perpendicular, and the shape and the area of connector are the same with the cross-section of heat transfer chamber (3), air intlet (11) and air outlet (14) are located same perpendicular, and the shape and the area of connector are the same with the cross-section of heat transfer chamber (3), the upper surface and the bottom surface of heat transfer case (2) respectively with the bottom surface of last closing cap board (9) and the upper surface swing joint of closing cap board (12) down.

2. A four-bin air heat exchanger according to claim 1, wherein: the left surface and the right surface of the heat exchange plate (6) are respectively and uniformly fixedly provided with a heat exchange block (7), and the heat exchange blocks (7) are semi-cylinders.

3. A four-bin air heat exchanger according to claim 1, wherein: the top and the bottom of the outer side of the heat exchange box (2) are respectively and fixedly sleeved with a sealing plate (8), and the two sealing plates (8) are respectively movably sleeved with an upper sealing cover plate (9) and a lower sealing cover plate (12).

4. A four-bin air heat exchanger according to claim 1, wherein: the movable shaft (4) is fixedly connected with a spring (15) at the leftmost side of the heat exchange chamber (3), a shifting lever (16) is uniformly and fixedly mounted between the air inlet (11) and the flue gas inlet (10) on the bottom surface of the upper sealing cover plate (9), and the bottom end of the shifting lever (16) is movably connected with the heat exchange plate (6).