Energy-saving and carbon-reducing waste heat collecting pipe for gas-fired boiler

Abstract

The utility model relates to the technical field of boiler waste heat collection, in particular to an energy-saving and carbon-reducing waste heat collecting pipe for a gas-fired boiler, which comprises a heat exchange cylinder, an efficient heat exchange mechanism is arranged in the heat exchange cylinder and comprises two groups of heat exchange water pipes fixedly connected to two sides of the heat exchange cylinder, and a touch rod is arranged between the two groups of heat exchange water pipes. The outer side wall of the heat exchange water pipe is sleeved with a plurality of sets of heat collection covers, a plurality of sets of exhaust holes are formed in the outer sides of the heat collection covers, the top ends of the heat collection covers are fixedly connected with dust falling rings, the dust falling rings are fixedly connected to the outer side wall of the heat exchange water pipe, and the inner side wall of the heat exchange water pipe is fixedly connected with a plurality of sets of flow stopping blocks. The flow stopping block is used for stopping cold water from flowing in the heat exchange water pipe so as to prolong the heat exchange time, falling dust of the heat collection cover and the dust falling ring is vibrated down through impact of the touch rod and the heat collection cover, the heat exchange efficiency of the heat exchange water pipe and the outside is maintained, meanwhile, more hot air is kept around the heat exchange water pipe through the shape of the dust falling ring, and the heat exchange efficiency is improved. The heat exchange efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler waste heat collection, in particular to a waste heat collection pipe for a gas boiler with energy saving and carbon reduction. Background Art

[0002] During the use of boilers used in steel enterprises, a large amount of fuel is usually consumed, and a large amount of flue gas is generated. In addition, the exhaust temperature of the boilers used in steel enterprises is also very high. In the past, these high-temperature flue gases were directly discharged into the atmosphere, resulting in a huge waste of resources. At present, in order to save energy, many technologies have been developed to recover the waste heat of this high-temperature flue gas. Among the existing technologies, the commonly used waste heat recovery facility is the heat exchanger, which is a device that can both reduce the flue gas temperature and utilize the high-temperature flue gas to achieve the purpose of heat exchange.

[0003] After searching, the patent document with publication number CN219015005U proposes a waste heat collection pipe for a gas boiler with energy saving and carbon reduction: the utility model relates to a waste heat collection device, and the technical solution adopted is: it includes a rotary kiln flue, which is characterized in that: the side walls of the rotary kiln flue are respectively provided with mounting holes at the upper and lower sides, and the upper and lower mounting holes are respectively arranged in 4 groups around the circumference of the flue wall, and the upper and lower mounting holes are respectively fixedly sleeved with the two ends of the inner heat conduction pipe, and the inner heat conduction pipe includes a vertical pipe, which is located in the flue, and heat conduction disks are evenly arranged on the pipe wall of the vertical pipe. The upper and lower ends of the vertical pipe are respectively bent outward horizontally and fixedly connected to the L-shaped conduit, the upper end of the upper L-shaped conduit is respectively connected to the bottom circumference of the water inlet tank, and the lower end of the lower L-shaped conduit is respectively connected to the upper circumferential surface of the water storage tank, and the water inlet tank is a circular hollow shell, and holes are respectively opened on the left and right ends of its upper surface to be fixedly connected to the L-shaped water inlet pipe. The beneficial effects of the utility model are: direct contact with the flue gas, improving the heat conduction efficiency and improving the waste heat recovery rate.

[0004] During the use of the above technical solution, smoke and water flow rate will affect the waste heat recovery rate of the structure, so there is still room for improvement in the waste heat recovery utilization rate. Utility Model Content

[0005] The purpose of this utility model is to provide an energy-saving and carbon-reducing waste heat collection pipe for a gas boiler, which eliminates factors affecting waste heat recovery by cooperating with a heat exchange tube and a high-efficiency heat exchange mechanism to solve the problem of insufficient waste heat recovery rate in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a waste heat collection pipe for an energy-saving and carbon-reducing gas boiler, comprising a heat exchange tube, wherein a high-efficiency heat exchange mechanism is arranged inside the heat exchange tube, and the high-efficiency heat exchange mechanism comprises two groups of hot water exchange pipes fixedly connected to both sides of the heat exchange tube, a touch rod is arranged between the two groups of hot water exchange pipes, the outer wall of the hot water exchange pipe is sleeved with several groups of heat collecting covers, and the outer side of the heat collecting cover is provided with several groups of exhaust holes, the top of the heat collecting cover is fixedly connected with an ash falling ring, and the ash falling ring is fixedly connected to the outer wall of the hot water exchange pipe, and the inner wall of the hot water exchange pipe is fixedly connected with several groups of flow blocks, and the heat exchange efficiency of the hot water exchange pipe is improved by using parts such as touch rods.

[0007] Preferably, the top of the heat exchange cylinder is fixedly connected to a rotating motor, the output end of the rotating motor is fixedly connected to the top of the touch rod, the outer side of the touch rod is fixedly connected to a striking part, and the striking part contacts the outer wall of the ash falling ring, thereby shaking off the accumulated ash on parts such as the water exchange water pipe and the heat collecting cover.

[0008] Preferably, the top of the heat exchange water pipe is fixedly connected to an upper water tank, which is fixedly connected to the outer side wall of the top of the heat exchange cylinder. One side of the upper water tank is fixedly connected to a water inlet pipe, through which cold water is introduced for heat exchange.

[0009] Preferably, the bottom end of the heat exchange water pipe is fixedly connected to a lower water tank, the lower water tank is fixedly connected to the outer side wall of the bottom of the heat exchange cylinder, and one side of the lower water tank is fixedly connected to a water outlet pipe, through which the hot water is discharged.

[0010] Preferably, two sets of exhaust pipes are fixedly connected to the top of the heat exchange cylinder, one end of the exhaust pipe is fixedly connected to a mounting plate, one side of the mounting plate is bolted to a filter box, and the exhaust gas is processed by the cooperation of the mounting plate and the filter box.

[0011] Preferably, the bottom end of the heat exchange cylinder is fixedly connected to a dust collecting bin, the inner side wall of the dust collecting bin is fixedly connected to an air inlet pipe, and a cleaning door is installed on one side of the dust collecting bin, through which the accumulated dust in the dust collecting bin is cleaned.

[0012] Preferably, a plurality of groups of hot air holes are opened on the top of the air inlet pipe, and a dust-proof cap is fixedly connected to the top of the air inlet pipe. The heat exchange distance is shortened by the cooperation between the air inlet pipe and the hot air holes, and the dust-proof cap is used to prevent dust from blocking the hot air holes.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. Through the cooperation of the heat exchange tube and the high-efficiency heat exchange mechanism, the flow of cold water in the heat exchange water pipe is blocked by the flow block to prolong the heat exchange time. The ash between the heat collection cover and the ash drop ring is shaken off by the collision between the touch rod and the heat collection cover, thus maintaining the heat exchange efficiency between the heat exchange water pipe and the outside world. At the same time, the shape of the ash drop ring is used to retain more hot air around the heat exchange water pipe, further improving the heat exchange efficiency.

[0015] 2. Through the coordination of the ash collecting bin, air intake pipe, ash prevention cap and hot air holes, the ash collecting bin is used to carry the fallen ash and the outside of the air intake pipe is insulated by the fallen ash. The coordination of the air intake pipe and the hot air holes shortens the distance between the heat collecting cover and the hot air, and the ash prevention cap is used to prevent the hot air holes from being blocked by the fallen ash. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 For the utility model Figure 1 A in the middle is an enlarged structural diagram;

[0019] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the dust falling ring of the utility model;

[0021] Figure 5 For the utility model Figure 3 Enlarged structural diagram at point B in the middle.

[0022] Description of reference numerals:

[0023] 1. Heat exchange cylinder; 2. High-efficiency heat exchange mechanism; 201. Heat exchange water pipe; 202. Touch rod; 203. Heat collecting cover; 204. Ash drop ring; 205. Exhaust hole; 206. Baffle; 3. Rotating motor; 4. Exhaust pipe; 5. Water inlet pipe; 6. Lower water tank; 7. Water outlet pipe; 8. Ash collection bin; 9. Air inlet pipe; 10. Cleaning door; 11. Upper water tank; 12. Mounting plate; 13. Filter box; 14. Ash protection cap; 15. Hot air hole. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0025] The utility model provides Figure 1-5 The waste heat collection pipe for a gas boiler with energy saving and carbon reduction shown in the figure includes a heat exchange tube 1, an efficient heat exchange mechanism 2 is arranged inside the heat exchange tube 1, and the efficient heat exchange mechanism 2 includes two groups of hot water exchange pipes 201 fixedly connected to both sides of the heat exchange tube 1. A touch rod 202 is arranged between the two groups of hot water exchange pipes 201. The outer wall of the hot water exchange pipe 201 is provided with a plurality of groups of heat collection covers 203. The outer side of the heat collection cover 203 is provided with a plurality of groups of exhaust holes 205, so that the gas cooled down after heat exchange is discharged through the exhaust holes 205. The top of the heat collection cover 203 is fixedly connected to the heat exchange tube 1. The ash falling ring 204 is connected, and the heat collecting cover 203 and the ash falling ring 204 cooperate to collect the hot air and exchange heat with the hot water pipe 201. The ash falling ring 204 is fixedly connected to the outer wall of the hot water pipe 201, and the inner wall of the hot water pipe 201 is fixedly connected with a plurality of groups of flow blocks 206. The flow blocks 206 are used to slow down the flow speed of the cold water inside the hot water pipe 201 to increase the heat exchange time. The top of the heat exchange cylinder 1 is fixedly connected with a rotating motor 3, and the output end of the rotating motor 3 is fixedly connected to the top of the touch rod 202. The outer side of the touch rod 202 is fixed. A striking part is connected and the striking part conflicts with the outer wall of the dust-falling ring 204, so that the dust accumulated on the hot water exchange pipe 201, the heat collecting cover 203 and other parts is shaken off to prevent the dust accumulation from affecting the heat exchange efficiency of the hot water exchange pipe 201. The top of the hot water exchange pipe 201 is fixedly connected to the upper water tank 11, and the upper water tank 11 is fixedly connected to the outer wall of the top of the heat exchange tube 1. One side of the upper water tank 11 is fixedly connected to the water inlet pipe 5, and cold water is introduced for heat exchange through the water inlet pipe 5. The bottom end of the hot water exchange pipe 201 is fixedly connected to the lower water tank 6, and the lower water tank 6 is fixedly connected to the outer side of the bottom of the heat exchange tube 1 The wall, one side of the lower water tank 6 is fixedly connected with a water outlet pipe 7, and the hot water is discharged through the water outlet pipe 7. Through the cooperation of the heat exchange cylinder 1 and the high-efficiency heat exchange mechanism 2, the baffle 206 is used to block the flow of cold water inside the hot water exchange pipe 201 to extend the heat exchange time, and the collision of the touch rod 202 and the heat collecting cover 203 shakes the ash from the heat collecting cover 203 and the ash falling ring 204 to maintain the heat exchange efficiency between the hot water exchange pipe 201 and the outside world. At the same time, the shape of the ash falling ring 204 is used to retain more hot air around the hot water exchange pipe 201, further improving the heat exchange efficiency.

[0026] Refer to the instruction manual Figure 1-5The top of the heat exchange tube 1 is fixedly connected with two sets of exhaust pipes 4, one end of the exhaust pipe 4 is fixedly connected with a mounting plate 12, and a filter box 13 is bolted to one side of the mounting plate 12. The exhaust gas is processed by the cooperation of the mounting plate 12 and the filter box 13 to prevent the smoke and dust in the exhaust gas from polluting the environment. The bottom end of the heat exchange tube 1 is fixedly connected with an ash bin 8, and the inner side wall of the ash bin 8 is fixedly connected with an air intake pipe 9. A cleaning door 10 is installed on one side of the ash bin 8. The accumulated ash in the ash bin 8 is cleaned out through the cleaning door 10 to prevent excessive accumulation of ash. The top of the air intake pipe 9 A plurality of groups of hot air holes 15 are provided in the interior, and a dust-proof cap 14 is fixedly connected to the top end of the air inlet pipe 9. The cooperation between the air inlet pipe 9 and the hot air holes 15 shortens the heat exchange distance, and the dust-proof cap 14 prevents dust from blocking the hot air holes 15. The cooperation between the ash collecting bin 8, the air inlet pipe 9, the dust-proof cap 14 and the hot air holes 15 is used. The ash collecting bin 8 carries the fallen ash and the fallen ash is used to insulate the outside of the air inlet pipe 9. The cooperation between the air inlet pipe 9 and the hot air holes 15 shortens the distance between the heat collecting cover 203 and the hot air, and the dust-proof cap 14 prevents the hot air holes 15 from being blocked by the fallen ash.

[0027] This utility works as follows:

[0028] Refer to the instruction manual Figure 1-5 When it is necessary to collect the waste heat of the flue gas discharged from the air intake pipe 9, water is first injected into the upper water tank 11 through the water inlet pipe 5, so that the cold water enters the hot water exchange pipe 201 downward, and then the hot air is discharged through the hot air hole 15 to make it contact with the heat collecting cover 203 and the ash falling ring 204. The shape of the ash falling ring 204 is used to retain more hot air around the hot water exchange pipe 201, and heat exchange is performed on the cold water inside the hot water exchange pipe 201. At the same time, the flow block 206 is used to block the flow of cold water inside the hot water exchange pipe 201 to extend the heat exchange time. After the heat exchange work has been carried out for a period of time, the rotating motor 3 is started to drive the outer side of the touch rod 202 to be fixedly connected to the striking part, and the striking part shakes off the accumulated dust on the hot water exchange pipe 201, the heat collecting cover 203 and other parts to prevent the accumulated dust from covering and affecting the heat exchange efficiency of the hot water exchange pipe 201. After the water flow heat exchange in the hot water exchange pipe 201 is completed, the hot water enters the lower water tank 6 and the inside of the water outlet pipe 7 and is discharged.

[0029] When the touch rod 202 shakes off the accumulated dust on the hot water exchange water pipe 201, the heat collecting cover 203 and other parts, the dust is carried by the dust collecting bin 8 and the outer side of the air inlet pipe 9 is insulated by the dust. When cleaning is required, the cleaning door 10 is opened to clean the dust, and the dust-proof cap 14 is used to prevent the dust from blocking the hot air hole 15.

[0030] The above description is merely illustrative of certain exemplary embodiments of the present invention. It goes without saying that those skilled in the art will be able to modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A waste heat collection pipe for a gas boiler with energy saving and carbon reduction, comprising a heat exchange tube (1), characterized in that: A high-efficiency heat exchange mechanism (2) is provided inside the heat exchange tube (1), and the high-efficiency heat exchange mechanism (2) comprises two groups of heat exchange water pipes (201) fixedly connected to both sides of the heat exchange tube (1), a touch rod (202) is provided between the two groups of heat exchange water pipes (201), the outer wall of the heat exchange water pipe (201) is provided with a plurality of groups of heat collection covers (203), the outer side of the heat collection cover (203) is provided with a plurality of groups of exhaust holes (205), the top end of the heat collection cover (203) is fixedly connected to an ash falling ring (204), the ash falling ring (204) is fixedly connected to the outer wall of the heat exchange water pipe (201), and the inner wall of the heat exchange water pipe (201) is fixedly connected to a plurality of groups of flow blocking blocks (206).

2. The energy-saving and carbon-reducing waste heat collection pipe for a gas boiler according to claim 1, characterized in that: The top end of the heat exchange cylinder (1) is fixedly connected to a rotating motor (3), the output end of the rotating motor (3) is fixedly connected to the top end of a touch rod (202), and the outer side of the touch rod (202) is fixedly connected to a striking portion, and the striking portion contacts the outer side wall of the ash falling ring (204).

3. The energy-saving and carbon-reducing waste heat collection pipe for a gas boiler according to claim 1, characterized in that: The top end of the heat exchange water pipe (201) is fixedly connected to an upper water tank (11), the upper water tank (11) is fixedly connected to the outer side wall of the top of the heat exchange cylinder (1), and one side of the upper water tank (11) is fixedly connected to a water inlet pipe (5).

4. The energy-saving and carbon-reducing waste heat collection pipe for a gas boiler according to claim 1, characterized in that: The bottom end of the heat exchange water pipe (201) is fixedly connected to a lower water tank (6), the lower water tank (6) is fixedly connected to the outer side wall of the bottom of the heat exchange cylinder (1), and one side of the lower water tank (6) is fixedly connected to a water outlet pipe (7).

5. The energy-saving and carbon-reducing waste heat collection pipe for a gas boiler according to claim 1, characterized in that: Two groups of exhaust pipes (4) are fixedly connected to the top end of the heat exchange cylinder (1), one end of the exhaust pipe (4) is fixedly connected to a mounting plate (12), and one side of the mounting plate (12) is bolted to a filter box (13).

6. The energy-saving and carbon-reducing waste heat collection pipe for a gas boiler according to claim 1, characterized in that: The bottom end of the heat exchange cylinder (1) is fixedly connected to an ash collecting bin (8), the inner side wall of the ash collecting bin (8) is fixedly connected to an air inlet pipe (9), and a cleaning door (10) is installed on one side of the ash collecting bin (8).

7. The energy-saving and carbon-reducing waste heat collection pipe for a gas boiler according to claim 6, characterized in that: A plurality of groups of hot air holes (15) are provided on the top of the air inlet pipe (9), and a dust-proof cap (14) is fixedly connected to the top end of the air inlet pipe (9).

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