Novel boiler exhaust smoke waste heat recovery energy-saving equipment

Abstract

The utility model relates to the field of boiler waste heat recovery, and discloses novel boiler smoke exhaust waste heat recovery energy-saving equipment which comprises a boiler body, a smoke exhaust pipeline is fixedly installed on the outer surface of the boiler body, a waste heat recovery box is arranged on one side of the boiler body, and a plurality of circulating pipelines are fixedly installed in the waste heat recovery box. A connecting gas guide pipe is arranged on one side of the waste heat recycling box, the air inlet ends of the multiple circulating pipelines are all fixed to the outer surface of the connecting gas guide pipe, exhaust assemblies are arranged at the exhaust ends of the circulating pipelines, a high-pressure gas pump is started, filtered high-pressure gas is exhausted through a gas supply disc and an exhaust pipe, in this way, liquid is turned over, and waste heat recycling is achieved. The heat exchange effect is improved, the heat exchange effect of hot flue gas flowing in the circulating pipeline and liquid can be improved through the arranged cooling fins, and meanwhile the heat exchange effect can be further improved through discharging of high-pressure gas.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of boiler waste heat recovery, and particularly relates to a novel boiler flue gas waste heat recovery energy-saving equipment. BACKGROUND

[0002] As a common energy conversion device, a boiler produces high-temperature flue gas through fuel combustion, and then transmits heat to a working medium (such as water) to generate steam or hot water, and is widely used in industrial production, central heating and other fields. In its operation process, the discharged high-temperature flue gas contains a large amount of heat, and if it is directly discharged, not only a great waste of energy will be caused, but also adverse effects on the environment may be caused by the high-temperature gas emission, such as causing local heat island effect, etc. In order to improve the energy utilization efficiency, reduce the operation cost and reduce the thermal pollution to the environment, the boiler flue gas waste heat recovery energy-saving equipment emerges as the times require, so as to realize the waste heat recovery and utilization, make the originally wasted heat be reasonably applied again, and achieve the purpose of energy saving and consumption reduction.

[0003] A boiler flue gas waste heat recovery equipment for energy saving and emission reduction is disclosed in the utility model with publication number CN218723342U, which comprises a boiler shell, an inner reaction cavity, a spiral connecting pipe, a control box and a water filter box. The inner reaction cavity is fixedly installed in the boiler shell through a fastening rod A. The inner reaction cavity stores a water storage cavity. The inner reaction cavity is provided with the spiral connecting pipe, the two ends of which extend to the top of the boiler shell. The water filter box can adsorb and filter the particles and harmful gases in the flue gas, so as to avoid the pollution of the particles and harmful gases in the flue gas to the environment.

[0004] However, it is found in actual use that: the device is used to make the flue gas enter the spiral connecting pipe, so that the heat in the flue gas is replaced with the liquid in the water storage cavity, so as to realize the full utilization of the heat of the flue gas and avoid the waste of waste heat.

[0005] However, in the heat replacement process, the liquid in the water storage cavity cannot flow, so that the liquid is unevenly heated and presents a local heating phenomenon, that is, the liquid close to the spiral connecting pipe is quickly heated and has a high temperature, while the liquid far away from the pipe is slowly heated and has an unobvious temperature rise. Therefore, the novel boiler flue gas waste heat recovery energy-saving equipment is provided. Utility model content

[0006] The application aims to solve the above problems and provide a novel boiler flue gas waste heat recovery energy-saving equipment.

[0007] The technical scheme adopted by the present application is as follows: a novel boiler flue gas waste heat recovery energy-saving equipment, comprising a boiler body, a flue gas duct is fixedly installed on the outer surface of the boiler body, a waste heat recovery tank is arranged on one side of the boiler body, a plurality of circulating pipes are fixedly installed in the waste heat recovery tank, a connecting air guide pipe is arranged on one side of the waste heat recovery tank, the air inlet ends of the plurality of circulating pipes are fixed to the outer surface of the connecting air guide pipe, an exhaust assembly is arranged at the air outlet end of the circulating pipe, one end of the flue gas duct away from the boiler body is fixed to one end of the connecting air guide pipe, a high-pressure air pump is arranged on the bottom surface of the waste heat recovery tank, a gas supply disc is fixedly installed in the waste heat recovery tank close to the bottom, a plurality of exhaust pipes are fixedly installed on the top surface of the gas supply disc, the air inlet end of the high-pressure air pump is connected with an external air filtering mechanism, an air supply pipe is fixedly installed at the air outlet end of the high-pressure air pump, one end of the air supply pipe extends into the waste heat recovery tank and is fixed to one side of the gas supply disc.

[0008] In a preferred embodiment, the exhaust assembly comprises an exhaust pipe, an L-shaped connecting pipe and a fan, an exhaust pipe is arranged below the connecting air guide pipe on one side of the waste heat recovery tank, the air outlet end of the circulating pipe is fixed to the outer surface of the exhaust pipe, the L-shaped connecting pipe is fixedly installed at one end of the exhaust pipe through a flange connecting disc, the fan is fixedly installed at one end of the L-shaped connecting pipe, the connecting pipe is fixedly installed at the air outlet end of the fan, and the connecting pipe is connected with an external filtering device.

[0009] In a preferred embodiment, a sealing top cover is fixedly installed on the top surface of the waste heat recovery tank through a bolt, a liquid injection pipe is fixedly installed on the top surface of the sealing top cover, and an electric control valve is fixedly installed on the outer surface of the liquid injection pipe.

[0010] In a preferred embodiment, a support frame is fixedly installed on the side of the waste heat recovery tank, and a plurality of support columns are symmetrically fixedly installed on the side of the support frame.

[0011] In a preferred embodiment, a plurality of heat dissipation fins are installed on the outer surface of the circulating pipe at equal intervals.

[0012] In a preferred embodiment, a temperature sensor is fixedly installed on one side of the waste heat recovery tank, and the monitoring end of the temperature sensor extends into the waste heat recovery tank.

[0013] In summary, due to the adoption of the above technical scheme, the present application has the following beneficial effects:

[0014] 1、The application, since the above-mentioned scheme is adopted, when the hot flue gas in the circulating pipeline and the liquid inside the waste heat recovery tank are heat replaced, at this time, the personnel start the high-pressure gas pump, so that the filtered high-pressure gas is discharged through the gas supply disc and the discharge pipe, so that the liquid is stirred, and the heat replacement effect is improved. The heat replacement effect of the hot flue gas flowing in the circulating pipeline and the liquid can be improved by the heat dissipation fins, and the discharge of the high-pressure gas can further improve the heat replacement effect. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 The overall structure of the application is shown in the figure;

[0016] Figure 2 The structure of the waste heat recovery tank of the application is shown in the figure;

[0017] Figure 3 The structure of the circulating pipeline of the application is shown in the figure;

[0018] Figure 4 The internal structure of the waste heat recovery tank of the application is shown in the figure.

[0019] Markings in the figure: 1, boiler body; 2, exhaust pipe; 3, waste heat recovery tank; 4, circulating pipeline; 5, connecting air guide pipe; 6, high-pressure gas pump; 7, gas supply disc; 8, discharge pipe; 9, gas supply pipe; 10, sealing top cover; 11, exhaust assembly; 1101, exhaust pipe; 1102, L-shaped connecting pipe; 1103, fan; 12, liquid injection pipe; 13, support frame; 14, support column; 15, heat dissipation fin; 16, temperature sensor. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the application more clear, the technical scheme in the embodiments of the application will be described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the application, not all the embodiments. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the application.

[0021] REFERENCE Figures 1-4The utility model provides a novel boiler exhaust gas waste heat recovery energy -conserving equipment, including the boiler body 1, the outer surface fixed mounting of boiler body 1 has the exhaust pipe 2, the one side of boiler body 1 is provided with the waste heat recovery tank 3, the top surface of waste heat recovery tank 3 is fixedly installed with the sealing top cover 10 of setting bolt, the top surface of sealing top cover 10 is fixedly installed with the liquid injection pipe 12 of setting bolt, the outer surface of liquid injection pipe 12 is fixedly installed with electric control valve, through the setting exhaust pipe 2, it is convenient for the hot flue gas of subsequent boiler body 1 operation to enter the inside waste heat recovery operation of waste heat recovery tank 3, sealing top cover 10 is fixed through bolt, and the convenient dismantling and installation are convenient to the maintenance and cleaning of waste heat recovery tank 3 inside, the setting of liquid injection pipe 12 and electric control valve can conveniently inject cooling liquid and so on working medium into waste heat recovery tank 3, and electric control valve can accurately control injection amount and injection time, ensure the stable operation of equipment, and the relief valve is installed on the top of sealing top cover 10, can carry out pressure relief operation when the pressure in waste heat recovery tank 3 is too high.

[0022] Reference Figure 1 , Figure 2 The side of the waste heat recovery tank 3 is fixedly installed with a support frame 13, and a plurality of support columns 14 are fixedly installed on the side of the support frame 13 in a symmetrical manner. The support frame 13 and the plurality of support columns 14 work together to provide a stable support structure for the waste heat recovery tank 3, enhance the overall stability of the equipment, make it can adapt to different installation environments, ensure that the waste heat recovery effect will not be affected by shaking or displacement during operation, and a heat preservation partition is installed on the side of the support frame 13, which can provide a certain heat preservation effect for the waste heat recovery tank 3.

[0023] Reference Figure 2 , Figure 3 And Figure 4 A plurality of circulating pipelines 4 are fixedly installed in the waste heat recovery tank 3, a plurality of heat dissipation fins 15 are installed on the outer surface of the circulating pipelines 4 at equal intervals, a connecting air guide pipe 5 is arranged on one side of the waste heat recovery tank 3, the air inlet ends of the plurality of circulating pipelines 4 are fixed to the outer surface of the connecting air guide pipe 5, and one end of the exhaust pipe 2 away from the boiler body 1 is fixed to one end of the connecting air guide pipe 5. The plurality of circulating pipelines 4 increase the contact area with the cooling liquid and other media in the waste heat recovery tank 3, improve the heat exchange efficiency, and the heat dissipation fins 15 further strengthen the heat conduction, which can quickly transfer the heat of the flue gas in the circulating pipelines 4 to the surrounding medium, the connecting air guide pipe 5 connects the exhaust pipe 2 and the circulating pipelines 4, ensures that the boiler exhaust gas can smoothly enter the circulating pipelines 4 for waste heat recovery, and the whole structure design is compact and efficient.

[0024] Reference Figure 1 , Figure 2 And Figure 3, the exhaust end of the circulating pipeline 4 is provided with an exhaust assembly 11, the exhaust assembly 11 includes an exhaust pipeline 1101, an L-shaped connecting pipe 1102 and a fan 1103, one side of the waste heat recovery tank 3 is located below the connecting air guide pipe 5 and is provided with the exhaust pipeline 1101, and the exhaust end of the circulating pipeline 4 is fixed to the outer surface of the exhaust pipeline 1101; through the exhaust pipeline 1101, the cooled flue gas discharged from the circulating pipeline 4 can be conveniently collected, the L-shaped connecting pipe 1102 changes the exhaust direction, facilitates connection with subsequent equipment, and the fan 1103 provides power for flue gas discharge, so that the flue gas can be smoothly discharged, accumulation of the flue gas in the circulating pipeline 4 is avoided, and the smoothness of the waste heat recovery process is maintained.

[0025] With reference to Figure 1 , Figure 2 and Figure 3 , one end of the exhaust pipeline 1101 is fixedly installed with the L-shaped connecting pipe 1102 through a flange connecting disc, one end of the L-shaped connecting pipe 1102 is fixedly installed with the fan 1103, and the exhaust end of the fan 1103 is fixedly installed with a connecting pipeline, and the connecting pipeline is connected with external filtering equipment; through the flange connecting disc, the L-shaped connecting pipe 1102 is convenient to install and disassemble, equipment maintenance is facilitated, the fan 1103 rapidly discharges the cooled flue gas and sends it into the external filtering equipment, it is ensured that the discharged gas meets environmental protection standards, pollution to the environment is reduced, and the air pressure balance in the waste heat recovery tank 3 is maintained, so that normal operation of the equipment is ensured.

[0026] With reference to Figure 2 , Figure 3 and Figure 4 , the bottom surface of the waste heat recovery tank 3 is provided with a high-pressure air pump 6, the inside of the waste heat recovery tank 3 is fixedly installed with a gas supply disc 7 close to the bottom, the top surface of the gas supply disc 7 is fixedly installed with a plurality of discharge pipes 8, and the air inlet end of the high-pressure air pump 6 is connected with external air filtering equipment; through the high-pressure air pump 6, clean air filtered by the external air filtering equipment can be sent into the gas supply disc 7, and then uniformly distributed into the waste heat recovery tank 3 through the plurality of discharge pipes 8, so that the circulation flow of the medium such as the cooling liquid in the tank is accelerated, the heat exchange efficiency is improved, and the local overheating area that may be generated in the tank is also helped to dissipate, so that the waste heat recovery process is more uniform and efficient.

[0027] With reference to Figure 2 , Figure 3 and Figure 4 , the exhaust end of the high-pressure air pump 6 is fixedly installed with a gas supply pipeline 9, and one end of the gas supply pipeline 9 extends to the inside of the waste heat recovery tank 3 and is fixed to one side of the gas supply disc 7; the gas supply pipeline 9 serves as a connecting channel between the high-pressure air pump 6 and the gas supply disc 7, ensures that the compressed air can be stably delivered, provides reliable guarantee for the work of the gas supply disc 7 and the discharge pipe 8, maintains the stable operation of the air circulation system in the tank, and further improves the overall performance of the waste heat recovery equipment.

[0028] Reference Figure 1 、 Figure 2 The temperature sensor 16 is arranged on one side of the waste heat recovery tank 3, and the monitoring end of the temperature sensor 16 extends to the inside of the waste heat recovery tank 3. A control box is arranged on one side of the waste heat recovery tank 3, a liquid discharge pipeline is arranged at the bottom of the waste heat recovery tank 3, a control valve is arranged on the outer surface of the liquid discharge pipeline, and the electric control valve arranged on the outer surface of the liquid injection pipe 12 is electrically connected with the control valve and the temperature sensor 16. Thus, the temperature of the liquid after heat replacement in the waste heat recovery tank 3 can be controlled. When the water temperature reaches the set value, the control valve on the liquid discharge pipeline is opened to discharge the heated liquid, and the electric control valve arranged on the outer surface of the liquid injection pipe 12 is opened to inject the cooling liquid for re-heating. Thus, the recovery and utilization of hot flue gas can be realized.

[0029] The implementation principle of the novel boiler flue gas waste heat recovery and energy-saving device embodiment is as follows: the user first starts the fan 1103, so that the flue gas generated by the operation inside the boiler body 1 enters the inside of the plurality of circulating pipelines 4 through the flue gas discharge pipeline 2. Thus, the hot flue gas can flow in the circulating pipeline 4. When the hot flue gas flows in the circulating pipeline 4, the hot flue gas is heat-replaced with the liquid in the waste heat recovery tank 3. Thus, the liquid in the waste heat recovery tank 3 can be heated, and the hot flue gas is cooled. The cooled flue gas is filtered and discharged.

[0030] When the hot flue gas in the circulating pipeline 4 is heat-replaced with the liquid in the waste heat recovery tank 3, at this time, the user starts the high-pressure gas pump 6, so that the filtered high-pressure gas is discharged through the gas supply disc 7 and the discharge pipe 8. Thus, the liquid is stirred to improve the heat replacement effect. The device has simple structure and convenient operation. The heat replacement effect of the hot flue gas and the liquid flowing in the circulating pipeline 4 can be improved by the arranged heat dissipation fins 15. Meanwhile, the discharge of the high-pressure gas can further improve the heat replacement effect.

[0031] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalents. The modification or replacement does not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A novel boiler flue gas waste heat recovery energy saving device, comprising a boiler body (1), characterized in that: The outer surface of the boiler body (1) is fixedly installed with an exhaust pipe (2), one side of the boiler body (1) is provided with a waste heat recovery tank (3), a plurality of circulating pipes (4) are fixedly installed in the waste heat recovery tank (3), one side of the waste heat recovery tank (3) is provided with a connecting air guide pipe (5), the air inlet ends of the plurality of circulating pipes (4) are fixed to the outer surface of the connecting air guide pipe (5), the air outlet ends of the circulating pipes (4) are provided with an exhaust assembly (11), one end of the exhaust pipe (2) away from the boiler body (1) is fixed to one end of the connecting air guide pipe (5), the bottom surface of the waste heat recovery tank (3) is provided with a high-pressure air pump (6), a gas supply disc (7) is fixedly installed in the waste heat recovery tank (3) close to the bottom, a plurality of exhaust pipes (8) are fixedly installed on the top surface of the gas supply disc (7), the air inlet end of the high-pressure air pump (6) is connected with an external air filtering mechanism, the air outlet end of the high-pressure air pump (6) is fixedly installed with a gas supply pipe (9), one end of the gas supply pipe (9) extends into the waste heat recovery tank (3) and is fixed to one side of the gas supply disc (7).

2. A novel boiler flue gas waste heat recovery energy saving device according to claim 1, characterized in that: The exhaust assembly (11) comprises an exhaust pipe (1101), an L-shaped connecting pipe (1102) and a fan (1103), an exhaust pipe (1101) is arranged below the connecting air guide pipe (5) on one side of the waste heat recovery tank (3), the air outlet ends of the circulating pipes (4) are fixed to the outer surface of the exhaust pipe (1101), an L-shaped connecting pipe (1102) is fixedly installed on one end of the exhaust pipe (1101) through a flange connecting disc, a fan (1103) is fixedly installed on one end of the L-shaped connecting pipe (1102), and the air outlet end of the fan (1103) is fixedly installed with a connecting pipe, which is connected with an external filtering device.

3. A novel boiler flue gas waste heat recovery energy saving device according to claim 1, characterized in that: A sealing top cover (10) is fixedly installed on the top surface of the waste heat recovery tank (3) through bolts, an injection pipe (12) is fixedly installed on the top surface of the sealing top cover (10), and an electric control valve is fixedly installed on the outer surface of the injection pipe (12).

4. A novel boiler flue gas waste heat recovery energy saving device according to claim 1, characterized in that: A support frame (13) is fixedly installed on the side of the waste heat recovery tank (3), and a plurality of support columns (14) are fixedly installed on the side of the support frame (13) in a symmetrical manner.

5. A novel boiler flue gas heat recovery energy saving device as claimed in claim 1, wherein: A plurality of heat dissipation fins (15) are fixedly installed on the outer surface of the circulating pipe (4) in an equidistant array.

6. A novel boiler flue gas heat recovery and energy saving device as claimed in claim 1, wherein: A temperature sensor (16) is fixedly installed on one side of the waste heat recovery tank (3), and the monitoring end of the temperature sensor (16) extends into the waste heat recovery tank (3).

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