Denitration flue gas heat exchanger with heat exchange cavity

Abstract

The utility model relates to the technical field of heat exchange, and discloses a denitration flue gas heat exchanger with a heat exchange cavity, which comprises two pipes and a shell, the periphery of each pipe is fixedly connected with three fixing blocks, a stirring component is arranged in each pipe, and an adjusting component is arranged in each pipe; the stirring assembly comprises a motor, and the motor is fixedly connected to the top of the fixing block. According to the denitration flue gas heat exchanger with the heat exchange cavity, when fluid flows in the heat exchange cavity, a motor is started to drive a first gear to rotate, the first gear rotates to drive a second gear and drive a third gear together, a stirring rod stirs the fluid in the heat exchange cavity, the fluid can violently flow through stirring, a thermal boundary layer is effectively destroyed, for example, the heat exchange efficiency is improved, and the heat exchange efficiency is improved. In the heat exchange cavity for liquid heat exchange, hot liquid and cold liquid are fully mixed through stirring, heat in the hot liquid can be transferred into the cold liquid more quickly, and therefore the convective heat exchange coefficient is increased, and the heat exchange speed is increased.

Description

Technical Field

[0001] This utility model relates to the field of heat exchange technology, and in particular to a denitrification flue gas heat exchanger with a heat exchange cavity. Background Technology

[0002] A denitrification flue gas heat exchanger with a heat exchange chamber is a device used to treat flue gas containing nitrogen oxides (NOx) and has a dedicated chamber (heat exchange chamber) for heat exchange. Its main purpose is to regulate the temperature of the denitrification flue gas through heat exchange to meet the requirements of subsequent denitrification processes, while also achieving a certain degree of energy recovery and utilization.

[0003] In practical use, existing denitrification flue gas heat exchangers with heat exchange chambers are not easy to stir. In the heat exchange chamber, the heat exchange between the hot denitrification flue gas and the cooling medium (such as air or water) mainly relies on natural convection and conduction, which easily leads to temperature stratification. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The purpose of this invention is to provide a denitrification flue gas heat exchanger with a heat exchange chamber, which solves the problem mentioned in the background art that it is not easy to stir, and the heat exchange between the hot denitrification flue gas and the cooling medium (such as air or water) in the heat exchange chamber mainly relies on natural convection and conduction, which easily leads to temperature stratification.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a denitrification flue gas heat exchanger with a heat exchange chamber, comprising two tubes and a shell. Three fixing blocks are fixedly connected to the outer periphery of the tubes. A stirring assembly and an adjusting assembly are disposed inside the tubes. The stirring assembly includes a motor, which is fixedly connected to the top of the fixing blocks. A gear one is fixedly connected to the drive end of the motor, and a gear three is slidably connected to the outer periphery of the gear one. A mounting plate is fixedly connected to the inner side of the fixing blocks, and a gear two is rotatably connected to one side of the mounting plate. The gear one and the gear three mesh with the gear two. The adjusting assembly includes a connecting plate, which is fixedly connected to the outer periphery of the tubes. An electric push rod is fixedly connected to one side of the connecting plate, and a slider is fixedly connected to one end of the electric push rod. The slider is slidably connected inside the connecting plate.

[0008] As a further embodiment of this utility model, one end of the gear three penetrates the bottom of the fixed block and is fixedly connected to one of the limiting plates on its outer periphery, and one end of the gear one penetrates the bottom of the fixed block and is fixedly connected to another limiting plate on its outer periphery.

[0009] As a further embodiment of this utility model, three support blocks are fixedly connected to the outer periphery of each of the two limiting plates, and a stirring rod is fixedly connected inside each of the three support blocks.

[0010] As a further embodiment of this utility model, a sliding plate one and a sliding plate two are slidably connected to the inner side of the slider, and the sliding plate two is slidably connected inside the sliding plate one.

[0011] As a further embodiment of this utility model, four buckles are fixedly connected to the top of the outer shell, and four support legs are fixedly connected to the bottom of the outer shell.

[0012] As a further embodiment of this utility model, one bottom end of the sliding plate is slidably connected inside the tube 6).

[0013] As a further embodiment of this utility model, the gear is rotatably connected inside the fixed block.

[0014] (III) Beneficial Effects

[0015] This utility model provides a denitrification flue gas heat exchanger with a heat exchange cavity, which has the following beneficial effects:

[0016] 1. This denitrification flue gas heat exchanger with a heat exchange chamber, through the setting of the stirring assembly, when the fluid flows inside the heat exchange chamber, the starting motor drives gear one to rotate, gear one rotates simultaneously, and together they drive gear three, so that the stirring rod stirs the fluid inside the heat exchange chamber. Stirring can make the fluid generate violent flow, effectively destroying the thermal boundary layer. For example, in the heat exchange chamber of liquid heat exchange, stirring makes the hot liquid and cold liquid fully mixed, allowing the heat in the hot liquid to be transferred to the cold liquid more quickly, thereby improving the convective heat transfer coefficient and accelerating the heat exchange rate.

[0017] 2. The denitrification flue gas heat exchanger with heat exchange chamber can adjust the settings of the components, start the electric push rod to drive the slider to slide inside the connecting plate. When the slider slides, it drives the sliding plate one and the sliding plate two to slide inward. Adjusting the flow rate of the fluid can control the flow velocity of the fluid in the heat exchange chamber. Appropriately increasing the flow velocity can enhance the turbulence of the fluid, thereby reducing the thickness of the thermal boundary layer and improving the convective heat transfer coefficient. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the stirring structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the adjustment structure of this utility model.

[0022] In the diagram: 1. Outer shell; 2. Stirring assembly; 201. Motor; 202. Gear 1; 203. Mounting plate; 204. Gear 2; 205. Gear 3; 3. Adjustment assembly; 301. Connecting plate; 302. Electric push rod; 303. Slider; 4. Buckle; 5. Support leg; 6. Tube; 7. Fixing block; 8. Stirring rod; 9. Limiting plate; 10. Support block; 11. Sliding plate 1; 12. Sliding plate 2. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0024] Please see Figures 1 to 4 This utility model provides a technical solution: a denitrification flue gas heat exchanger with a heat exchange chamber, comprising two tubes 6 and a shell 1. Three fixing blocks 7 are fixedly connected to the outer periphery of the tubes 6. A stirring assembly 2 and an adjusting assembly 3 are installed inside the tubes 6. The stirring assembly 2 includes a motor 201, which is fixedly connected to the top of the fixing blocks 7. A gear 1 202 is fixedly connected to the drive end of the motor 201. A gear 3 205 is slidably connected to the outer periphery of the gear 1 202. A mounting plate 203 is fixedly connected to the inner side of the fixing blocks 7. A gear 2 204 is rotatably connected to one side of the mounting plate 203. Gear 202 and gear 3 205 are meshed with gear 2 204; the adjusting assembly 3 includes a connecting plate 301, which is fixedly connected to the outer periphery of the tube 6. An electric push rod 302 is fixedly connected to one side of the connecting plate 301, and a slider 303 is fixedly connected to one end of the electric push rod 302. The slider 303 is slidably connected inside the connecting plate 301. Through the arrangement of the motor 201, gear 202, mounting plate 203, gear 2 204, and gear 3 205, a stirring function is achieved. Through the arrangement of the connecting plate 301, electric push rod 302, and slider 303, an adjusting function is achieved.

[0025] One end of gear 3 205 passes through the bottom of the fixing block 7 and is fixedly connected to one of the limiting plates 9 on its outer periphery. One end of gear 1 202 passes through the bottom of the fixing block 7 and is fixedly connected to another limiting plate 9 on its outer periphery. The limiting plates 9 serve to support the support block 10.

[0026] Three support blocks 10 are fixedly connected to the outer periphery of each of the two limiting plates 9. A stirring rod 8 is fixedly connected inside each of the three support blocks 10. The three support blocks 10 serve to fix the stirring rod 8.

[0027] Sliding plate 11 and sliding plate 2 12 are slidably connected to the inner side of slider 303. Sliding plate 2 12 is slidably connected inside sliding plate 11. The arrangement of sliding plate 11 and sliding plate 2 12 plays an adjustment role.

[0028] The top of the outer shell 1 is fixedly connected with four buckles 4, and the bottom of the outer shell 1 is fixedly connected with four support legs 5. The four support legs 5 serve to support the outer shell 1.

[0029] The bottom end of the sliding plate 11 is slidably connected to the inside of the tube 6, and the tube 6 plays a role in heat exchange.

[0030] Gear 3 205 is rotatably connected inside the fixed block 7. The fixed block 7 serves to allow gear 3 205 to rotate inside the fixed block 7.

[0031] Motor model 201 is BLDC. The above parameters and model can be selected according to the actual situation.

[0032] In this invention, the working steps of the device are as follows:

[0033] First step: When the fluid flows inside the heat exchange chamber, the motor 201 is started to drive the gear 202 to rotate. The rotation of the gear 202 drives the gear 204 and together they drive the gear 305, so that the stirring rod 8 stirs the fluid inside the heat exchange chamber. Stirring can make the fluid flow violently and effectively destroy the thermal boundary layer. For example, in the heat exchange chamber of liquid heat exchange, stirring makes the hot liquid and cold liquid mix thoroughly, so that the heat in the hot liquid can be transferred to the cold liquid more quickly, thereby improving the convective heat transfer coefficient and accelerating the heat exchange rate.

[0034] The second step: Start the electric push rod 302 to drive the slider 303 to slide inside the connecting plate 301. When the slider 303 slides, it drives the sliding plate 11 and the sliding plate 12 to slide inward. Adjusting the flow rate of the fluid can control the flow velocity of the fluid in the heat exchange cavity. Appropriately increasing the flow velocity can enhance the turbulence of the fluid, thereby reducing the thickness of the thermal boundary layer and increasing the convective heat transfer coefficient.

[0035] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0036] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flue gas heat exchanger for denitration with a heat exchange chamber, comprising two tubes (6) and a housing (1), characterized in that: Three fixing blocks (7) are peripherally fixedly connected to the pipe (6), an agitating assembly (2) is arranged in the pipe (6), and an adjusting assembly (3) is arranged in the pipe (6); The agitating assembly (2) comprises a motor (201), the motor (201) is fixedly connected to the top of the fixing block (7), a gear one (202) is fixedly connected to the driving end of the motor (201), a gear three (205) is peripherally slidably connected to the gear one (202), an installation plate (203) is fixedly connected to the inner side of the fixing block (7), a gear two (204) is rotatably connected to one side of the installation plate (203), and the gear one (202) and the gear three (205) are in meshing connection with the gear two (204). The adjusting assembly (3) comprises a connecting plate (301), the connecting plate (301) is fixedly connected to the periphery of the pipe (6), an electric push rod (302) is fixedly connected to one side of the connecting plate (301), a sliding block (303) is fixedly connected to one end of the electric push rod (302), and the sliding block (303) is slidably connected to the inside of the connecting plate (301).

2. The flue gas heat exchanger with heat exchange cavity according to claim 1, characterized in that: One end of the gear three (205) penetrates through the bottom of the fixing block (7) and is peripherally fixedly connected to one of the limiting plates (9), and one end of the gear one (202) penetrates through the bottom of the fixing block (7) and is peripherally fixedly connected to the other limiting plate (9).

3. The flue gas heat exchanger with heat exchange cavity according to claim 2, characterized in that: Three supporting blocks (10) are peripherally fixedly connected to each of the limiting plates (9), and an agitating rod (8) is fixedly connected to the inside of each of the supporting blocks (10).

4. The flue gas heat exchanger with heat exchange cavity according to claim 1, characterized in that: The sliding block (303) is slidably connected with a sliding plate one (11) and a sliding plate two (12) on the inner side, and the sliding plate two (12) is slidably connected to the inside of the sliding plate one (11).

5. The flue gas heat exchanger with heat exchange cavity according to claim 1, characterized in that: Four buckles (4) are fixedly connected to the top of the shell (1), and four supporting legs (5) are fixedly connected to the bottom of the shell (1).

6. The flue gas heat exchanger with heat exchange cavity according to claim 4, characterized in that: The sliding plate one (11) is slidably connected to the inside of the pipe (6).

7. The flue gas heat exchanger with heat exchange cavity according to claim 1, characterized in that: The gear three (205) is rotatably connected to the inside of the fixing block (7).

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