Waste heat recovery device for biomass power generation

Abstract

The utility model relates to the technical field of biomass power generation, in particular to a waste heat recovery device for biomass power generation, which comprises a box body, a heat preservation layer arranged on one side of the inner side of the box body, a fixing plate arranged on the left side of the box body, a water pump arranged at the upper end of the fixing plate, a water inlet pipe fixed on the water pump, and a filter screen arranged on the right side of the water inlet pipe. The right end of the water inlet pipe is connected with the water tank. Compared with the prior art, the water tank is adopted for containing water, smoke fully heats the water in the water tank, heat transfer is more perfect, the situation that in the water circulation process, heat transfer of the smoke is unbalanced, and consequently water is heated insufficiently is avoided, the check valve is arranged in a matched mode, water enters or stops, and the water circulation efficiency is improved. According to the device, heat in flue gas is better and more fully utilized to heat water, heat storage is achieved, heat transfer of the heat in the flue gas is more effectively utilized, and loss of the heat in the flue gas is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of biomass power generation, in particular to a waste heat recovery device for biomass power generation. Background Art

[0002] Biomass power generation is the use of biomass energy to generate electricity. It is a type of renewable energy power generation, including direct combustion of agricultural and forestry waste power generation, agricultural and forestry waste gasification power generation, waste incineration power generation, landfill gas power generation and biogas power generation.

[0003] A Chinese patent discloses a high-efficiency waste heat recovery device for biomass power generation (authorization announcement number CN 215810402U). This patented technology can solve the problem that when the existing waste heat recovery device is in use, there is only one gas transmission hole at the bottom. After the high-temperature gas generated by biomass power generation is input, it is easy for the part of the water pipe located directly above the gas transmission hole to have more high-temperature gas and higher temperature, while other parts have less high-temperature gas and lower temperature, thus reflecting the problem of poor uniformity of heating the water pipe by the waste heat recovery device. However, the existing waste heat recovery device for biomass power generation does not fully utilize the heat because the water circulation speed is too fast. When the water circulates, the water cannot be fully heated, the heat cannot be fully utilized, and the water temperature cannot be increased.

[0004] Therefore, those skilled in the art provide a waste heat recovery device for biomass power generation to solve the problems raised in the above background technology. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a waste heat recovery device for biomass power generation, comprising a box body, a heat preservation layer is arranged on one side of the inner side of the box body, and by arranging the heat preservation layer, a fixing plate is arranged on the left side of the box body, a water pump is arranged on the upper end of the fixing plate, a water inlet pipe is fixed on the upper side of the water pump, a filter screen is arranged on the right side of the water inlet pipe, the right end of the water inlet pipe is connected to a water tank, a connecting pipe is wound around the outer surface of the water tank, and one end of the connecting pipe is fixedly connected to a water outlet pipe, and one end of the connecting pipe away from the water pump passes through the box body and is connected to the water outlet pipe, so that the water tank is fully in contact with the flue gas, thereby more fully performing heat transfer;

[0006] An air inlet pipe is arranged on the left side of the box body, and the right end of the air inlet pipe is connected to the purification box. An air outlet pipe is arranged on the bottom right end of the box body. A filter frame is arranged outside the purification box. There are two filter frames, and a first filter layer and a second filter layer are arranged on the filter frame.

[0007] Preferably: a base is provided at the bottom of the box, and fixed blocks are provided at the four corners of the lower end of the base. The lower end of the fixed block is connected to an anti-wear pad, and a transparent window is provided at the front of the box, through which the internal situation of the box can be observed. The fixed plate limits the water pump, water inlet pipe and filter screen, and the right side of the water inlet pipe extends into the interior of the box. A check valve is provided on the outlet pipe, and a heat-insulating layer is provided inside the box to prevent water from returning. The air inlet pipe is trumpet-shaped, and an air pump is provided at the air inlet pipe, so that the smoke can be better inhaled when the air pump is working.

[0008] Preferably: the top cover of the purification box is provided with a cover plate, and a fixing bolt 1 is provided at the connection between the cover plate and the purification box. The number of the fixing bolts 1 is four, and they are evenly distributed at the four corners of the cover plate. A connection frame is provided on the outside of the purification box, and fixing bolts 2 are provided at the connection between the connection frame and the purification box.

[0009] Technical effects and advantages of the utility model:

[0010] 1. Compared with the prior art, the utility model adopts a water tank to hold water, so that the flue gas can fully heat the water inside the water tank, making the heat transfer more perfect, avoiding the uneven heat transfer of the flue gas during the water circulation process, thereby causing insufficient heating of the water, and cooperating with the set check valve to allow or cut off the entry of water. The device better and more fully utilizes the heat in the flue gas to heat the water, realizes the storage of heat, and more effectively utilizes the heat transfer of the heat in the flue gas to avoid the loss of heat in the flue gas.

[0011] 2. The utility model provides a purification box, a first filter layer, a second filter layer, a connecting frame and two fixing bolts. Only by removing the two fixing bolts, the two filter frames can be removed from the purification box, which is convenient for personnel to disassemble the purification box, thereby facilitating personnel to clean the first filter layer and the second filter layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of a waste heat recovery device for biomass power generation provided in an embodiment of the present application. Figure 1 ;

[0013] Figure 2 This is a schematic diagram of a waste heat recovery device for biomass power generation provided in an embodiment of the present application. Figure 2 ;

[0014] Figure 3 It is a schematic structural diagram of a top view of a waste heat recovery device for biomass power generation provided in an embodiment of the present application;

[0015] Figure 4It is a structural schematic diagram of a water tank and connecting pipes in a waste heat recovery device for biomass power generation provided in an embodiment of the present application;

[0016] Figure 5 It is a structural schematic diagram of an air pump, a purification box, a cover plate, bolts, a filter frame, a first filter layer, a second filter layer, a connection frame and fixing bolts in a waste heat recovery device for biomass power generation provided in an embodiment of the present application;

[0017] Figure 6 It is a structural schematic diagram of a water tank, a connecting pipe, a water outlet pipe and a check valve in a waste heat recovery device for biomass power generation provided in an embodiment of the present application;

[0018] Figure 7 This is a waste heat recovery device for biomass power generation provided in the embodiment of the present application Figure 5 Schematic diagram of the structure at A in the middle.

[0019] In the figure: 1. box body; 2. base; 3. fixing block; 4. anti-wear pad; 5. transparent window; 6. insulation layer; 7. fixing plate; 8. water pump; 9. water inlet pipe; 10. filter screen; 11. water tank; 12. connecting pipe; 13. water outlet pipe; 14. check valve; 15. air inlet pipe; 16. air pump; 17. purification box; 18. cover plate; 19. fixing bolt 1; 20. filter frame; 21. first filter layer; 22. second filter layer; 23. connecting frame; 24. fixing bolt 2; 25. outlet pipe. DETAILED DESCRIPTION

[0020] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes. Example

[0021] See also Figures 1 to 7In this embodiment, a waste heat recovery device for biomass power generation is provided, including a box body 1, a base 2 is arranged at the bottom of the box body 1, and fixed blocks 3 are arranged at the four corners of the lower end of the base 2. The lower end of the fixed block 3 is connected to an anti-wear pad 4. A transparent window 5 is arranged at the front of the box body 1, and the internal situation of the box body 1 can be observed through the transparent window 5. An insulation layer 6 is arranged on one side of the inner side of the box body 1. By setting the insulation layer 6, the box body 1 is kept warm and the heat dissipation is avoided. A fixing plate 7 is arranged on the left side of the box body 1, and a water pump is arranged on the upper end of the fixing plate 7. 8. A water inlet pipe 9 is fixed on the water pump 8, and a filter screen 10 is arranged on the right side of the water inlet pipe 9. Further, the fixed plate 7 limits the water pump 8, the water inlet pipe 9 and the filter screen 10. The right side of the water inlet pipe 9 extends into the interior of the box body 1. The right end of the water inlet pipe 9 is connected to the water tank 11. A connecting pipe 12 is wound around the outer surface of the water tank 11, and one end of the connecting pipe 12 is fixedly connected to the water outlet pipe 13. The end of the connecting pipe 12 away from the water pump 8 passes through the box body 1 and is connected to the water outlet pipe 13. The water tank 11 is fully in contact with the flue gas, so that heat transfer is more fully performed.

[0022] A check valve 14 is arranged on the water outlet pipe 13 to prevent water from returning. A heat preservation layer 6 is arranged inside the box 1. The heat preservation layer 6 is made of heat preservation cotton to absorb the lost heat and avoid heat waste.

[0023] An air inlet pipe 15 is arranged on the left side of the box body 1. The air inlet pipe 15 is trumpet-shaped, and an air pump 16 is arranged at the air inlet pipe 15. When the air pump 16 is working, the smoke is better inhaled. The right end of the air inlet pipe 15 is connected to the purification box 17. The top cover of the purification box 17 is provided with a cover plate 18. A fixing bolt 19 is arranged at the connection between the cover plate 18 and the purification box 17. The number of the fixing bolts 19 is four and they are evenly distributed at the four corners of the cover plate 18. An air outlet pipe 25 is arranged at the right end of the bottom of the box body 1. A filter frame 20 is arranged on the outside of the purification box 17. The number of the filter frames 20 is two. The filter frame 20 is provided with a first filter layer 21 and a second filter layer 22. Layer 22, a connection frame 23 is set on the outside of the purification box 17, and fixing bolts 24 are set at the connection between the connection frame 23 and the purification box 17. When the air pump 16 starts to work, it draws smoke from the air inlet pipe into the inside of the box body 1, and the water pump 8 starts to draw water and introduces the water into the inside of the water tank 11 through the water inlet pipe 9. After the smoke enters the box body 1, it fills the box body 1. The smoke fully contacts the water inlet pipe 9 and the water tank 11. The heat inside the smoke is transferred from the water inlet pipe 9 and the water tank 11 to the water inside, and is heated. When there is too much smoke inside the box body 1, it is discharged from the air outlet pipe 25 and passes through the check valve 14, thereby limiting the inflow and outflow of water;

[0024] When it is necessary to disassemble the first filter layer 21 and the second filter layer 22 arranged in the purification box 17, it is only necessary to remove the fixing bolts 24 to remove the two filter frames 20 from the purification box 17, so that it is convenient for personnel to disassemble the purification box 17, thereby facilitating personnel to clean the first filter layer 21 and the second filter layer 22.

[0025] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. A waste heat recovery device for biomass power generation, comprising a housing (1), characterized in that: A heat-insulating layer (6) is provided on one side of the inner side of the box body (1). By providing the heat-insulating layer (6), a fixing plate (7) is provided on the left side of the box body (1). A water pump (8) is provided on the upper end of the fixing plate (7). A water inlet pipe (9) is fixed on the upper side of the water pump (8). A filter screen (10) is provided on the right side of the water inlet pipe (9). The right end of the water inlet pipe (9) is connected to a water tank (11). A connecting pipe (12) is wound around the outer surface of the water tank (11). One end of the connecting pipe (12) is fixedly connected to a water outlet pipe (13). One end of the connecting pipe (12) away from the water pump (8) passes through the box body (1) and is connected to the water outlet pipe (13). The water tank (11) is fully in contact with the flue gas, thereby more fully transferring heat. An air inlet pipe (15) is arranged on the left side of the box body (1), the right end of the air inlet pipe (15) is connected to the purification box (17), an air outlet pipe (25) is arranged at the right end of the bottom of the box body (1), a filter frame (20) is arranged outside the purification box (17), the number of the filter frames (20) is two, and a first filter layer (21) and a second filter layer (22) are arranged on the filter frames (20).

2. A waste heat recovery device for biomass power generation according to claim 1, characterized in that: A base (2) is provided at the bottom of the box body (1), and fixing blocks (3) are provided at the four corners of the lower end of the base (2).

3. A waste heat recovery device for biomass power generation according to claim 2, characterized in that: The lower end of the fixed block (3) is connected to the anti-wear pad (4), and a transparent window (5) is provided at the front of the box body (1).

4. The waste heat recovery device for biomass power generation according to claim 1, characterized in that: The fixing plate (7) limits the position of the water pump (8), the water inlet pipe (9) and the filter screen (10), and the right side of the water inlet pipe (9) extends into the interior of the box body (1).

5. The waste heat recovery device for biomass power generation according to claim 1, characterized in that: A check valve (14) is arranged on the water outlet pipe (13), and a heat-insulating layer (6) is arranged inside the box (1) to prevent water from returning.

6. The waste heat recovery device for biomass power generation according to claim 1, characterized in that: The air intake pipe (15) is trumpet-shaped, and an air pump (16) is provided at the air intake pipe (15).

7. The waste heat recovery device for biomass power generation according to claim 1, characterized in that: The top cover of the purification box (17) is provided with a cover plate (18), and a fixing bolt (19) is provided at the connection between the cover plate (18) and the purification box (17).

8. The waste heat recovery device for biomass power generation according to claim 7, characterized in that: The number of the fixing bolts (19) is four and they are evenly distributed at the four corners of the cover plate (18).

9. The waste heat recovery device for biomass power generation according to claim 1, characterized in that: A connection frame (23) is provided on the outer side of the purification box (17), and two fixing bolts (24) are provided at the connection between the connection frame (23) and the purification box (17).

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