Flue gas waste heat utilization device

Abstract

The utility model relates to the field of coal-fired boilers, in particular to a flue gas waste heat utilization device which comprises a device body and a heat exchange barrel, a flue gas ingress pipe is installed in the middle of one side of the device body in a threaded mode so that high-temperature gas generated by a coal-fired boiler can be conveniently guided to enter, and the heat exchange barrel is installed and arranged in the middle of the interior of the device body through a support. The interior of the heat exchange barrel can be uniformly heated, the interior of the heat exchange barrel is divided into the liquid heating chamber and the gas heating chamber through the partition plate, normal-temperature gas and liquid can be heated at the same time and then put into use, the application range is widened, heat carried by high-temperature gas is fully utilized, and resource waste is avoided.

Description

Technical Field

[0001] The utility model relates to the field of coal-fired boilers, in particular to a flue gas waste heat utilization device. Background Art

[0002] A coal-fired boiler is a boiler that uses coal as fuel. It refers to a thermal power device that releases heat by burning coal in the furnace to heat the heat medium water or other organic heat carriers (such as heat transfer oil, etc.) to a certain temperature (or pressure).

[0003] However, the prior art has the following defects:

[0004] Coal-fired boilers produce a large amount of high-temperature gas when working. Most of the existing coal-fired boilers discharge these high-temperature gases directly into the atmosphere, which not only easily burns the pipelines and damages the equipment, but also wastes the heat carried by the high-temperature gas, causing waste of resources, which is not in line with the green concept of energy conservation and environmental protection. Utility Model Content

[0005] The purpose of the utility model is to provide a flue gas waste heat utilization device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a flue gas waste heat utilization device, comprising a device body and a heat exchange cylinder, the heat exchange cylinder being arranged inside the device body, one side of the heat exchange cylinder overlapping with the inner wall of one side of the device body, a partition being fixedly installed in the middle of the inside of the heat exchange cylinder, the partition separating the upper and lower parts of the heat exchange cylinder, the upper half of the heat exchange cylinder being provided with a liquid heating chamber, the lower half of the heat exchange cylinder being provided with a gas heating chamber, a water inlet being fixedly installed on one side of the top of the heat exchange cylinder, an air inlet being fixedly installed on the bottom of one side of the heat exchange cylinder, and a water outlet and an air outlet being fixedly installed in sequence from top to bottom on the side where the heat exchange cylinder overlaps with the device body.

[0007] By adopting the above technical solution, the heat exchange cylinder can utilize the waste heat of the flue gas to heat the gas and liquid inside it, and then enter the equipment that needs hot water and hot air through the water outlet and the air outlet. The interior of the heat exchange cylinder is divided into two parts by a partition, and the gas and liquid are heated at the same time, which has a wide range of applications.

[0008] The top of the water inlet passes through one side of the top of the device body and is exposed to the external environment, the air inlet passes through the bottom of one side of the device body and is exposed to the external environment, one side of the water outlet is connected to the liquid heating chamber, and the air outlet is connected to the gas heating chamber.

[0009] The above technical solution is adopted, in which the water inlet facilitates liquid to enter the liquid heating chamber, the air inlet facilitates gas to enter the gas heating chamber, and the water outlet and the air outlet facilitate the discharge of hot water and hot gas, and is put into use.

[0010] A threaded through hole is provided in the middle of the device body on the side with the air inlet, a smoke inlet pipe is installed with the internal threads of the threaded through hole, and a smoke outlet is provided at the bottom of the device body near the air outlet.

[0011] The above technical solution is adopted, in which the smoke inlet pipe is threadedly connected to the device body, which is easy to disassemble, and the smoke outlet is convenient for discharging the smoke after use.

[0012] A filter plate is mounted in a clamped manner inside a side of the smoke inlet pipe close to the device body, and a sealing gasket is bonded to the outer side of one end of the smoke inlet pipe connected to a threaded through hole.

[0013] By adopting the above technical solution, the filter plate of the solution can filter the smoke, and the sealing gasket plays a sealing role to prevent the smoke from leaking.

[0014] First annular sleeves are fixedly installed on the outside of both ends of the device body, supporting legs are fixedly installed on the bottom of the first annular sleeve, and floor mats are bonded to the bottom of the supporting legs.

[0015] By adopting the above technical solution, the legs of the solution play a supporting role for the device body, and the floor mat plays an anti-skid role to prevent the device body from sliding and shifting.

[0016] A cavity is provided in the device body, a bracket is fixedly installed on the inner wall in the middle of the device body, and the heat exchange cylinder is inserted and installed inside the bracket.

[0017] By adopting the above technical solution, the bracket of the solution supports the heat exchange cylinder, and the cavity is used to install and place the heat exchange cylinder.

[0018] The bracket includes a second annular sleeve and a third annular sleeve. The outer wall of the second annular sleeve is fixedly connected to the inner wall of the middle part of the device body. The inner wall of the third annular sleeve is fixedly connected to the outer wall of the heat exchange cylinder. The second annular sleeve and the third annular sleeve are evenly fixedly installed with four connecting rods.

[0019] The above technical solution is adopted, in which the connecting rod is installed between the second annular sleeve and the third annular sleeve, playing the role of connecting support, ensuring that the heat exchange cylinder is located in the middle position of the device body, so that the flue gas waste heat is evenly heated.

[0020] Compared with the prior art, the beneficial effects of the utility model are:

[0021] The utility model connects the high-temperature gas generated by the coal-fired boiler to the device body through the flue gas inlet pipe, and uses the waste heat of the flue gas to evenly heat the liquid and gas inside the heat exchange cylinder. Then the hot gas and hot water enter the required equipment through the water outlet and the gas outlet and are directly put into use, so that the heat carried by the high-temperature gas is fully utilized, meeting the requirements of energy saving and environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0024] Figure 3 It is a schematic diagram of the side structure plane of the utility model;

[0025] Figure 4 It is a schematic diagram of the support structure in the utility model.

[0026] In the figure: 1. device body; 2. water inlet; 3. first annular sleeve; 4. water outlet; 5. air outlet; 6. smoke outlet; 7. support leg; 8. air inlet; 9. smoke inlet pipe; 10. cavity; 11. heat exchange cylinder; 12. bracket; 13. liquid heating chamber; 14. partition; 15. gas heating chamber; 16. second annular sleeve; 17. connecting rod; 18. third annular sleeve; 19. filter plate; 20. threaded through hole. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-4The utility model provides a flue gas waste heat utilization device, including a device body 1 and a heat exchange cylinder 11, the heat exchange cylinder 11 is arranged inside the device body 1, one side of the heat exchange cylinder 11 coincides with the inner wall of one side of the device body 1, a partition 14 is fixedly installed in the middle of the heat exchange cylinder 11, the partition 14 separates the upper and lower parts of the heat exchange cylinder 11, the upper half of the heat exchange cylinder 11 is provided with a liquid heating chamber 13, the lower half of the heat exchange cylinder 11 is provided with a gas heating chamber 15, a water inlet 2 is fixedly installed on one side of the top of the heat exchange cylinder 11, an air inlet 8 is fixedly installed on the bottom of one side of the heat exchange cylinder 11, a water outlet 4 and an air outlet 5 are fixedly installed in sequence from top to bottom on one side of the heat exchange cylinder 11 that coincides with the device body 1, and the heat exchange cylinder 11 utilizes the flue gas waste heat to heat the gas and liquid inside it.

[0029] The top of the water inlet 2 passes through one side of the top of the device body 1 and is exposed to the external environment, the air inlet 8 passes through the bottom of one side of the device body 1 and is exposed to the external environment, one side of the water outlet 4 is connected to the liquid heating chamber 13, and the air outlet 5 is connected to the gas heating chamber 15. The water inlet 2 and the air inlet 8 facilitate the entry of normal temperature gas and liquid into the heat exchange cylinder 11.

[0030] A threaded through hole 20 is provided in the middle of the device body 1 on one side of the air inlet 8, and a smoke inlet pipe 9 is installed on the internal thread of the threaded through hole 20. A smoke outlet 6 is provided at the bottom of the device body 1 near the air outlet 5, and the smoke inlet pipe 9 is detachable.

[0031] A filter plate 19 is mounted on the inside of the flue gas inlet pipe 9 close to the device body 1, and a sealing gasket is bonded to the outside of one end of the flue gas inlet pipe 9 connected to a threaded through hole 20. The filter plate 19 can filter out impurities in the flue gas.

[0032] First annular sleeves 3 are fixedly installed on the outside of both ends of the device body 1, and supporting legs 7 are fixedly installed on the bottom of the first annular sleeve 3. A floor mat is bonded to the bottom of the supporting legs 7, and the supporting legs 7 play a supporting role.

[0033] A cavity 10 is provided in the device body 1 , a bracket 12 is fixedly mounted on the inner wall in the middle of the device body 1 , a heat exchange cylinder 11 is inserted and installed inside the bracket 12 , and the cavity 10 is convenient for installing the heat exchange cylinder 11 .

[0034] The bracket 12 includes a second annular sleeve 16 and a third annular sleeve 18. The outer wall of the second annular sleeve 16 is fixedly connected to the inner wall of the middle part of the device body 1, and the inner wall of the third annular sleeve 18 is fixedly connected to the outer wall of the heat exchange cylinder 11. The second annular sleeve 16 and the third annular sleeve 18 are evenly fixedly installed with four connecting rods 17. The bracket 12 can ensure that the heat exchange cylinder 11 is located in the middle position inside the device body 1.

[0035] Working principle: When the utility model is used, the flue gas inlet pipe 9 is first connected to the flue gas exhaust port of the coal-fired boiler, which can guide the high-temperature flue gas into the interior of the device body 1. The heat exchange cylinder 11 is fixedly installed inside the device body 1 through the bracket 12. The bracket 12 can ensure that the heat exchange cylinder 11 is located in the middle position inside the device body 1, so that the heating is uniform. The heat exchange cylinder 11 is divided into a liquid heating chamber 13 and a gas heating chamber 15 by a partition 14, which can heat the gas and liquid at the same time. After heating, the gas and liquid enter the equipment that needs hot water and hot air through the gas outlet 5 and the water outlet 4 and are put into use. The utility model makes full use of the heat carried by the high-temperature gas, avoids waste of resources, and conforms to the concept of energy saving and environmental protection.

[0036] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A flue gas waste heat utilization device, comprising a device body (1) and a heat exchange cylinder (11), characterized in that: The heat exchange cylinder (11) is arranged inside the device body (1), one side of the heat exchange cylinder (11) overlaps with the inner wall of one side of the device body (1), a partition (14) is fixedly installed in the middle of the heat exchange cylinder (11), and the partition (14) separates the upper and lower parts of the heat exchange cylinder (11), the upper half of the heat exchange cylinder (11) is provided with a liquid heating chamber (13), and the lower half of the heat exchange cylinder (11) is provided with a gas heating chamber (15), a water inlet (2) is fixedly installed on one side of the top of the heat exchange cylinder (11), an air inlet (8) is fixedly installed on the bottom of one side of the heat exchange cylinder (11), and a water outlet (4) and an air outlet (5) are fixedly installed in sequence from top to bottom on the side of the heat exchange cylinder (11) that overlaps with the device body (1).

2. The flue gas waste heat utilization device according to claim 1, characterized in that: The top of the water inlet (2) passes through one side of the top of the device body (1) and is exposed to the external environment, the air inlet (8) passes through the bottom of one side of the device body (1) and is exposed to the external environment, one side of the water outlet (4) is connected to the liquid heating chamber (13), and the air outlet (5) is connected to the gas heating chamber (15).

3. The flue gas waste heat utilization device according to claim 1, characterized in that: The device body (1) is provided with a threaded through hole (20) in the middle of one side of the air inlet (8), a smoke inlet pipe (9) is installed in the internal thread of the threaded through hole (20), and a smoke outlet (6) is provided at the bottom of the device body (1) near the air outlet (5).

4. The flue gas waste heat utilization device according to claim 3, characterized in that: A filter plate (19) is mounted in a snap-fitted manner on one side of the smoke inlet pipe (9) close to the device body (1), and a sealing gasket is bonded to the outer side of one end of the smoke inlet pipe (9) connected to a threaded through hole (20).

5. The flue gas waste heat utilization device according to claim 1, characterized in that: A first annular sleeve (3) is fixedly mounted on the outside of both ends of the device body (1), a support leg (7) is fixedly mounted on the bottom of the first annular sleeve (3), and a floor mat is bonded to the bottom of the support leg (7).

6. The flue gas waste heat utilization device according to claim 1, characterized in that: A cavity (10) is provided in the device body (1), a bracket (12) is fixedly installed on the inner wall in the middle of the device body (1), and the heat exchange cylinder (11) is inserted and installed inside the bracket (12).

7. The flue gas waste heat utilization device according to claim 6, characterized in that: The bracket (12) comprises a second annular sleeve (16) and a third annular sleeve (18); the outer wall of the second annular sleeve (16) is fixedly connected to the inner wall of the middle part of the device body (1); the inner wall of the third annular sleeve (18) is fixedly connected to the outer wall of the heat exchange cylinder (11); and the second annular sleeve (16) and the third annular sleeve (18) are evenly fixedly mounted with four connecting rods (17).

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