Waste heat recovery steam-water heat exchange unit

Abstract

The utility model relates to the technical field of heat exchange units, and discloses a waste heat recovery steam-water heat exchange unit which comprises a shell, a water flow inlet pipe is fixedly connected to the left end of the upper surface of the shell, a water flow outlet pipe is fixedly connected to the left end of the lower surface of the shell, and an airflow inlet pipe is fixedly connected to the position, located on the right side of the water flow inlet pipe, of the upper surface of the shell. An airflow outlet pipe is fixedly connected to the right end of the lower surface of the shell, and a heat exchange mechanism is arranged in the shell; the heat exchange mechanism is arranged, the U-shaped pipe in the heat exchange mechanism conducts heat exchange treatment on water to be subjected to heat exchange and steam, the contact area of the water to be subjected to heat exchange and the contact time of the steam to be subjected to heat exchange can be increased through the design of the U-shaped pipe, and therefore the heat exchange efficiency is improved; impurities in the steam are filtered by a filter plate, and the situation that the impurities enter the shell and adhere to the surface of the U-shaped pipe to form a heat insulation layer, and consequently the heat exchange efficiency is affected is avoided; and a motor in the cleaning mechanism drives a brush to rotate through a first gear and a second gear, so that the filter plate is cleaned, and blockage of the filter plate is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat exchanger unit technical field, and specifically is a waste heat recovery steam water heat exchanger unit. BACKGROUND

[0002] Now city central heating, whether central air conditioning, water heating, floor heating and so on heating mode need to have hot water as heat source, and the hot water heat of boiler is high, and the flow is small, because the temperature rises slowly, so cannot be used for the heating problem of city, and the power plant and so on industrial and mining enterprises have a large amount of steam to be excluded, so the heat exchanger is needed to heat the heat in the boiler water, and the heat is applied in heating or other purposes.

[0003] The original heat exchanger is straight-through heat exchange, the internal structure is simple, the heat exchange surface is small, and the heat exchange efficiency is low, and there is the problem of waste heat source, and the heat exchange efficiency is slow.

[0004] China patent discloses a kind of efficient steam water heat exchanger (grant announcement number CN215808744U), and the patent technology is set by spiral heat exchange pipe, increase the contact area and contact time of gas and medium, so as to better absorb the heat in gas, while liquefying steam, improve heat exchange efficiency and waste heat absorption;

[0005] But, it has certain drawbacks: impurities (such as particulate matter, grease, moisture, etc.) contained in steam will directly enter the body and adhere to the surface of spiral heat exchange pipe, these impurities will form a heat insulation layer, hinder heat transfer from steam to water to be heat exchanged, thereby significantly reducing heat exchange efficiency, long-term accumulation of impurities not only can reduce heat exchange efficiency, but also can cause corrosion or abrasion to spiral heat exchange pipe, shorten the service life of equipment. Utility model content

[0006] The utility model aims at providing a kind of waste heat recovery steam water heat exchanger unit to solve the problems presented in the above background.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A kind of waste heat recovery steam water heat exchanger unit, including shell, the upper surface left end of the shell is fixedly connected with water inflow pipe, and the lower surface left end of shell is fixedly connected with water outflow pipe, the upper surface of the shell is fixedly connected with air inflow pipe at the right side of water inflow pipe, and the lower surface right end of shell is fixedly connected with air outflow pipe, the inside of the shell is provided with heat exchange mechanism;

[0009] A filter tube is fixedly connected to the upper end of the airflow inlet pipe. A collection box communicating with the inside of the filter tube is fixedly connected to the lower surface of the filter tube. A filter plate is fixedly connected to the right side of the collection box inside the filter tube. A cleaning mechanism is provided on the upper surface of the filter tube and the right side of the filter plate inside the filter tube. The cleaning mechanism includes a cleaning component and a fixing seat. A motor is fixedly connected to the upper surface of the fixing seat. A fixing rod is fixedly connected to the output end of the motor. A second gear is fixedly connected to the lower end of the fixing rod.

[0010] As a further embodiment of this utility model: the heat exchange mechanism includes multiple U-shaped tubes, and a first partition is fixedly connected to both the left and right ends of the multiple U-shaped tubes, and a second partition is fixedly connected to the left side surface of the first partition.

[0011] As a further embodiment of this utility model: the cleaning component includes a first connecting rod, a connecting plate is rotatably connected to the outside of the first connecting rod, a first gear is fixedly connected to the right end of the first connecting rod, a second connecting rod is fixedly connected to the left end of the first connecting rod, and a brush is fixedly connected to the left end of the second connecting rod.

[0012] As a further embodiment of this utility model: the cleaning component is located inside the filter tube, the lower end of the fixing seat is fixed to the upper surface of the filter tube, and the fixing rod movably penetrates the upper surface of the filter tube.

[0013] As a further embodiment of this utility model: the first partition and the second partition are both fixed to the inner surface of the shell, the water inlet pipe and the water outlet pipe are both located on the left side of the left first partition, and the water inlet pipe and the water outlet pipe are respectively located on the upper and lower sides of the second partition, and the airflow inlet pipe and the airflow outlet pipe are both located between the two first partitions.

[0014] As a further embodiment of this utility model: the upper end of the connecting plate is fixed to the inner upper surface of the filter tube, the first gear is meshed with the second gear, the second connecting rod movably passes through the filter plate, and the brush is attached to the left side surface of the filter plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model is equipped with a heat exchange mechanism. The U-shaped tube in the heat exchange mechanism performs heat exchange treatment on the water and steam to be heat exchanged. The design of the U-shaped tube can increase the contact area and time between the water and steam to be heat exchanged, thereby improving the heat exchange efficiency.

[0017] 2. This utility model filters impurities in steam through a filter plate, preventing them from entering the shell and adhering to the surface of the U-shaped tube to form a heat insulation layer, which would affect the heat exchange efficiency; the motor in the cleaning mechanism drives the brush to rotate through the first gear and the second gear, thereby cleaning the filter plate and preventing it from becoming clogged. Attached Figure Description

[0018] Fig. 1 This is a schematic diagram of a waste heat recovery steam-water heat exchanger unit.

[0019] Fig. 2 A partial cross-sectional view of a waste heat recovery steam-water heat exchanger unit;

[0020] Fig. 3 This is a schematic diagram of the heat exchange mechanism in a waste heat recovery steam-water heat exchanger unit.

[0021] Fig. 4 This is a schematic diagram of the filter tube structure in a waste heat recovery steam-water heat exchanger unit;

[0022] Fig. 5 This is a cross-sectional view of a filter tube in a waste heat recovery steam-water heat exchanger unit;

[0023] Fig. 6 This is a schematic diagram of the cleaning mechanism in a waste heat recovery steam-water heat exchanger unit.

[0024] In the diagram: 1. Shell; 2. Water inlet pipe; 3. Water outlet pipe; 4. Air inlet pipe; 5. Air outlet pipe; 6. Heat exchange mechanism; 7. U-tube; 8. First partition plate; 9. Second partition plate; 10. Filter tube; 11. Collection box; 12. Filter plate; 13. Cleaning mechanism; 14. Cleaning component; 15. First connecting rod; 16. Connecting plate; 17. First gear; 18. Second connecting rod; 19. Brush; 20. Fixing base; 21. Motor; 22. Fixing rod; 23. Second gear. Detailed Implementation

[0025] Please see Figs. 1-3 In this embodiment of the present invention, a waste heat recovery steam-water heat exchanger unit includes a shell 1. A water inlet pipe 2 is fixedly connected to the left end of the upper surface of the shell 1, and a water outlet pipe 3 is fixedly connected to the left end of the lower surface of the shell 1. An airflow inlet pipe 4 is fixedly connected to the right side of the water inlet pipe 2 on the upper surface of the shell 1, and an airflow outlet pipe 5 is fixedly connected to the right end of the lower surface of the shell 1. A heat exchange mechanism 6 is provided inside the shell 1. The heat exchange mechanism 6 includes multiple U-shaped pipes 7. A first partition 8 is fixedly connected to both the left and right ends of the multiple U-shaped pipes 7. The airflow inlet pipe 4 and the airflow outlet pipe 5 are both located between two first partitions 8. A second partition 9 is fixedly connected to the left side of the first partition 8. The first partition 8 and the second partition 9 are both fixed to the inner surface of the shell 1. The water inlet pipe 2 and the water outlet pipe 3 are both located to the left of the left first partition 8, and the water inlet pipe 2 and the water outlet pipe 3 are respectively located on the upper and lower sides of the second partition 9.

[0026] Water inlet pipe 2 is used for the inlet of hot water to be exchanged, and water outlet pipe 3 is used for the outlet of water after heat exchange; air inlet pipe 4 is used for the inlet of hot steam, and air outlet pipe 5 is used for the outlet of water after steam condensation; U-shaped pipe 7 is used for the inlet and outlet of water flow. Its U-shaped design increases the contact time and area between water flow and steam, thereby improving heat exchange efficiency.

[0027] exist Fig. 1 , Fig. 2 , Figs. 4-6 In the middle section: A filter tube 10 is fixedly connected to the upper end of the airflow inlet pipe 4. A collection box 11 communicating with the interior of the filter tube 10 is fixedly connected to the lower surface of the filter tube 10. A filter plate 12 is fixedly connected to the right side of the collection box 11 inside the filter tube 10. A cleaning mechanism 13 is provided on the upper surface of the filter tube 10 and the right side of the filter plate 12 inside the filter tube 10. The cleaning mechanism 13 includes a cleaning component 14 and a fixing seat 20. The cleaning component 14 is located inside the filter tube 10. The lower end of the fixing seat 20 is fixedly connected to the upper surface of the filter tube 10. The cleaning component 14 includes a first connecting rod 15. A connecting plate 16 is rotatably connected to the outside of the first connecting rod 15. The upper end of 16 is fixed to the inner upper surface of the filter tube 10. The right end of the first connecting rod 15 is fixed to the first gear 17. The left end of the first connecting rod 15 is fixed to the second connecting rod 18. The second connecting rod 18 movably passes through the filter plate 12. The left end of the second connecting rod 18 is fixed to the brush 19. The brush 19 is attached to the left side surface of the filter plate 12. The upper surface of the fixed seat 20 is fixed to the motor 21. The output end of the motor 21 is fixed to the fixed rod 22. The fixed rod 22 movably passes through the upper surface of the filter tube 10. The lower end of the fixed rod 22 is fixed to the second gear 23. The first gear 17 is meshed with the second gear 23.

[0028] The filter plate 12 is used to filter impurities in the steam and is fixed to the inside of the filter tube 10 by bolts.

[0029] The motor 21 is equipped with a brake, meaning that the motor shaft cannot rotate after power is cut off. The motor 21 can drive the first connecting rod 15 to rotate through the second gear 23 and the first gear 17, thereby driving the brush 19 to clean the filter plate 12, thus preventing impurities from accumulating on the surface of the filter plate 12 and causing blockage.

[0030] The collection box 11 is used to collect fallen impurities; the collection box 11 includes a box body and a box cover fixed to the lower end of the box body, and the two are fixed together by bolts;

[0031] The second connecting rod 18 is fixed to the first connecting rod 15 by bolts. The second connecting rod 18 and the brush 19 can be disassembled by removing the bolts.

[0032] The working principle of this utility model is as follows: During use, the water to be heated is discharged into the interior of the shell 1 through the water inlet pipe 2, and the water to be heated flows into the U-shaped tube 7. At the same time, steam is discharged into the shell 1 through the airflow inlet pipe 4, and then exchanges heat with the water in the U-shaped tube 7. Finally, the water after heat exchange is discharged through the water outlet pipe 3, and some steam and condensed water are discharged through the airflow outlet pipe 5. The filter plate 12 filters the impurities in the steam when the steam enters, preventing them from entering the shell 1 and adhering to the surface of the U-shaped tube 7 to form a heat insulation layer, which would reduce the heat exchange efficiency. The motor 21 drives the fixed rod 22 to rotate, thereby driving the second gear 23 to rotate. The first gear 17, which meshes with the second gear 23, drives the first connecting rod 15 to rotate, thereby driving the brush 19 to rotate and clean the filter plate 12, thus preventing the filter plate 12 from clogging.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A waste heat recovery steam-water heat exchanger unit, comprising a shell (1), wherein a water inlet pipe (2) is fixedly connected to the left end of the upper surface of the shell (1), and a water outlet pipe (3) is fixedly connected to the left end of the lower surface of the shell (1), an airflow inlet pipe (4) is fixedly connected to the right side of the water inlet pipe (2) on the upper surface of the shell (1), and an airflow outlet pipe (5) is fixedly connected to the right end of the lower surface of the shell (1), and a heat exchange mechanism (6) is provided inside the shell (1); Its features are, A filter tube (10) is fixedly connected to the upper end of the airflow inlet pipe (4). A collection box (11) connected to the inside of the filter tube (10) is fixedly connected to the lower surface of the filter tube (10). A filter plate (12) is fixedly connected to the right side of the collection box (11) inside the filter tube (10). A cleaning mechanism (13) is provided on the upper surface of the filter tube (10) and the right side of the filter plate (12) inside the filter tube (10). The cleaning mechanism (13) includes a cleaning component (14) and a fixed seat (20). A motor (21) is fixedly connected to the upper surface of the fixed seat (20). A fixed rod (22) is fixedly connected to the output end of the motor (21). A second gear (23) is fixedly connected to the lower end of the fixed rod (22).

2. The waste heat recovery steam-water heat exchanger unit according to claim 1, characterized in that, The heat exchange mechanism (6) includes multiple U-shaped tubes (7), and a first partition (8) is fixedly connected to both the left and right ends of the multiple U-shaped tubes (7). A second partition (9) is fixedly connected to the left side surface of the first partition (8).

3. The waste heat recovery steam-water heat exchanger unit according to claim 1, characterized in that, The cleaning component (14) includes a first connecting rod (15), a connecting plate (16) is rotatably connected to the outside of the first connecting rod (15), and a first gear (17) is fixed to the right end of the first connecting rod (15), a second connecting rod (18) is fixed to the left end of the first connecting rod (15), and a brush (19) is fixed to the left end of the second connecting rod (18).

4. The waste heat recovery steam-water heat exchanger unit according to claim 1, characterized in that, The cleaning component (14) is located inside the filter tube (10), the lower end of the fixing seat (20) is fixed to the upper surface of the filter tube (10), and the fixing rod (22) moves through the upper surface of the filter tube (10).

5. A waste heat recovery steam-water heat exchanger unit according to claim 2, characterized in that, The first partition (8) and the second partition (9) are both fixed to the inner surface of the shell (1). The water inlet pipe (2) and the water outlet pipe (3) are both located on the left side of the first partition (8), and the water inlet pipe (2) and the water outlet pipe (3) are located on the upper and lower sides of the second partition (9), respectively. The airflow inlet pipe (4) and the airflow outlet pipe (5) are both located between the two first partitions (8).

6. A waste heat recovery steam-water heat exchanger unit according to claim 3, characterized in that, The upper end of the connecting plate (16) is fixed to the inner upper surface of the filter tube (10), the first gear (17) is meshed with the second gear (23), the second connecting rod (18) moves through the filter plate (12), and the brush (19) is attached to the left side surface of the filter plate (12).

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