Boiler energy-saving device

Abstract

The utility model discloses a boiler energy-saving device which comprises a boiler body, a combustion chamber, a smoke pipe, a first pipe fitting, an air pre-heater, a condenser, a water inlet pipe and an air inlet pipe, one side of the bottom end of the condenser is fixedly connected with a second pipe fitting, the second pipe fitting is fixedly connected with a connecting frame, and the second pipe fitting is of a split type structure. The opposite sides of the two second pipe fittings are rotationally connected with bearing sleeves through bearings, connecting rings are connected into the bearing sleeves in a threaded mode, protrusions are evenly and fixedly connected to the outer sides of the connecting rings, guide pipes are inserted into the bearing sleeves, flow dividing discs are evenly and fixedly connected to the guide pipes, and supporting discs are fixedly connected to the upper sides and the lower sides of the guide pipes. The connecting frame is installed on one side of the air pre-heater and connected with the air inlet pipe and the water inlet pipe, then the second pipe fitting and the flow dividing disc provide smoke guiding, smoke with waste heat makes contact with the air inlet pipe and the water inlet pipe, and therefore heat exchange is achieved, air and water entering the condenser can be preheated, gradient utilization of the waste heat is achieved, and the heat exchange efficiency is improved. And waste of latent heat is reduced.

Description

Technical Field

[0001] This utility model relates to the field of boiler energy-saving technology, specifically to a boiler energy-saving device. Background Technology

[0002] Boiler energy conservation is a key measure in the industrial sector to reduce energy consumption, carbon emissions, and improve economic benefits. Energy conservation can be improved through high-efficiency burner retrofitting, deep waste heat recovery, and insulation and sealing optimization.

[0003] According to the Chinese patent publication number CN219414713U, "A Boiler Energy Saving Device", it mainly describes the process of activating an air extraction pump to extract air from the inner tank, thereby reducing the air pressure inside the inner tank and lowering the boiling point of the water inside the inner tank. This allows the water inside the inner tank to be heated to boiling with less energy and in a shorter time. The steam generated from boiling is then converted into mechanical energy for industrial production, thus achieving the function of energy saving.

[0004] Common boilers use blowers to draw air into the boiler to work with low-NOx burners to burn fuel gas. The flue gas then enters the air preheater through flue pipes, where it exchanges heat with the air, reducing its temperature to approximately 140°C. The flue gas then enters the condenser for latent heat recovery. At this point, the flue gas temperature is 55°C, and it undergoes further flue gas treatment. However, since the flue gas no longer participates in the latent heat recovery process, some waste occurs.

[0005] Therefore, a boiler energy-saving device is proposed to solve the problem of wasted heat energy when flue gas with a temperature of about 55°C is discharged. Utility Model Content

[0006] The technical problem this utility model aims to solve is that when flue gas with a temperature of around 55°C is discharged, some heat energy is wasted. Therefore, a boiler energy-saving device is proposed.

[0007] The technical solution adopted by this utility model to solve the technical problem is: a boiler energy-saving device, including a boiler body, a combustion chamber, a flue, a first pipe fitting, an air preheater, a condenser, a water inlet pipe and an air inlet pipe. A second pipe fitting is fixedly connected to one side of the bottom end of the condenser. A connecting frame is fixedly connected to the second pipe fitting. The second pipe fitting has a split structure. Each of the two second pipe fittings has a receiving sleeve rotatably connected to the opposite side through a bearing. A connecting ring is threaded into the receiving sleeve. Protrusions are evenly fixedly connected to the outer side of the connecting ring. A guide tube is inserted into the receiving sleeve. A diverter plate is evenly fixedly connected to the guide tube. Support plates are fixedly connected to both the upper and lower sides of the guide tube.

[0008] As a preferred technical solution of this utility model, a limiting ring is fixedly connected to the support plate, and the limiting ring is in contact with the connecting ring. By setting the limiting ring and the connecting ring to provide contact, the overflow of flue gas can be prevented.

[0009] As a preferred technical solution of this utility model, the water inlet pipe and the air inlet pipe are evenly provided with bends, which are located inside the distribution plate. By setting the bends, the contact surface between the water inlet pipe, the air inlet pipe and the distribution plate is increased, thereby improving the heat exchange effect.

[0010] As a preferred technical solution of this utility model, a bracket is fixedly connected inside the diversion plate and a guide plate is fixedly connected on the bracket. The guide plate has a conical structure. By setting the guide plate, the movement path of the flue gas can be increased.

[0011] As a preferred technical solution of this utility model, a groove is provided on one side of the connecting frame and an operating plate is in contact with the groove. A positioning rod is inserted into the operating plate and the positioning rod is threadedly connected to the connecting frame. By setting the operating plate, it is convenient to inspect the inside of the connecting frame.

[0012] This utility model has the following advantages: by installing a connecting frame on one side of the air preheater and connecting the air inlet pipe and the water inlet pipe, and then the second pipe and the diverter plate provide flue gas guidance, the flue gas with residual heat comes into contact with the air inlet pipe and the water inlet pipe, thereby achieving heat exchange, which can preheat the air and the water entering the condenser, thereby making gradient use of residual heat and reducing the waste of latent heat. Attached Figure Description

[0013] Figure 1 This is a side sectional view of a preferred embodiment of the present invention of a boiler energy-saving device;

[0014] Figure 2 This is a three-dimensional sectional view of the diversion plate of a boiler energy-saving device according to a preferred embodiment of the present invention;

[0015] Figure 3 This is a three-dimensional sectional view of the receiving sleeve of a boiler energy-saving device according to a preferred embodiment of the present invention.

[0016] Explanation of reference numerals in the attached drawings: 1. Boiler body; 2. Combustion chamber; 3. Flue; 4. First fitting; 5. Air preheater; 6. Condenser; 7. Water inlet pipe; 8. Air inlet pipe; 9. Second fitting; 10. Connecting frame; 11. Bearing; 12. Receiving sleeve; 13. Guide tube; 14. Diverter plate; 15. Support plate; 16. Connecting ring; 17. Limiting ring; 18. Control panel; 19. Bend; 20. Guide plate. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Please refer to the following: Figure 1-3 The boiler energy-saving device shown includes a boiler body 1, a combustion chamber 2, a flue pipe 3, a first pipe fitting 4, an air preheater 5, which provides preheating for the incoming air, a condenser 6, which is circulated with cold water to exchange waste heat with the flue gas, a water inlet pipe 7, and an air inlet pipe 8. A second pipe fitting 9 is fixedly connected to one side of the bottom of the condenser 6, and a connecting frame 10 is fixedly connected to the second pipe fitting 9. The second pipe fitting 9 has a split structure, and each of the two second pipe fittings 9 has a receiving sleeve 12 rotatably connected to an opposite side via a bearing 11. The receiving sleeve 12 and the connecting ring 16 are used to connect the guide pipe. 13. The diameter of the conduit 13 is smaller than that of the second fitting 9, which can increase the flow velocity. The receiving sleeve 12 is internally threaded with a connecting ring 16. The outer side of the connecting ring 16 is uniformly fixedly connected with protrusions. The conduit 13 is inserted into the receiving sleeve 12. The diverting plate 14 is uniformly fixedly connected to the conduit 13. By setting the diverting plate 14, the diameter of the diverting plate 14 is larger than that of the conduit 13, so that the movement speed of the flue gas is reduced when the flue gas enters the diverting plate 14, thereby promoting the airflow formed by the flue gas to contact the bend 19 and improving the heat exchange effect. The upper and lower sides of the conduit 13 are fixedly connected with support plates 15.

[0019] Among them, a limiting ring 17 is fixedly connected to the support plate 15. The limiting ring 17 contacts the connecting ring 16. By setting the limiting ring 17, the gap between the receiving sleeve 12 and the connecting ring 16 can be reduced.

[0020] Among them, the water inlet pipe 7 and the air inlet pipe 8 are evenly provided with bends 19. The bends 19 are located inside the distribution plate 14. By setting the bends 19, the contact surface between the water inlet pipe 7, the air inlet pipe 8 and the flue gas inside the distribution plate 14 is increased.

[0021] The diversion plate 14 is fixedly connected to a bracket, and a guide plate 20 is fixedly connected to the bracket. The guide plate 20 has a conical structure. By setting the guide plate 20, the movement path of the flue gas can be further increased, and the contact time between the flue gas and the bend 19 can be increased.

[0022] The connecting frame 10 has a groove on one side and an operating plate 18 is in contact with the groove. A positioning rod is inserted into the operating plate 18 and is threadedly connected to the connecting frame 10. By setting the operating plate 18 and the positioning rod, the internal components of the connecting frame 10 can be maintained by disassembly.

[0023] Working principle: Air and fuel gas are introduced into combustion chamber 2 and combustion is carried out to produce flue gas. The flue gas is then transported through flue pipe 3, and after passing through air preheater 5, it enters condenser 6 through first fitting 4. At the same time, water is introduced into water tank through water inlet pipe 7 and then removed from one side of condenser 6. Simultaneously, air is introduced from blower. Water inlet pipe 7 and air inlet pipe 8 introduce air and water respectively. At the same time, flue gas overflows from second fitting 9. At this time, the flue gas at condenser 6 enters the connecting frame 10 and continuously enters the distribution plate 14. The flue gas passes through guide plate 20 and contacts bend pipe 19, thereby preheating the air and water in advance, forming a stepped utilization and reducing the waste of latent heat.

[0024] The above are merely preferred embodiments of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model.

[0025] All other parts of this utility model that are not described in detail belong to the prior art, and therefore will not be described in detail here.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A boiler energy-saving device, comprising a boiler body (1), a combustion chamber (2), a flue (3), a first pipe fitting (4), an air preheater (5), a condenser (6), a water inlet pipe (7), and an air inlet pipe (8), characterized in that, The condenser (6) is fixedly connected to a second pipe fitting (9) on one side of its bottom end. A connecting frame (10) is fixedly connected to the second pipe fitting (9). The second pipe fitting (9) has a split structure. The two second pipe fittings (9) are rotatably connected to a receiving sleeve (12) on opposite sides via a bearing (11). A connecting ring (16) is threaded into the receiving sleeve (12). A protrusion is evenly fixedly connected to the outer side of the connecting ring (16). A conduit (13) is inserted into the receiving sleeve (12). A flow divider (14) is evenly fixedly connected to the conduit (13). A support plate (15) is fixedly connected to both the upper and lower sides of the conduit (13).

2. The boiler energy-saving device as described in claim 1, characterized in that, A limiting ring (17) is fixedly connected to the support plate (15), and the limiting ring (17) is in contact with the connecting ring (16).

3. The boiler energy-saving device as described in claim 1, characterized in that, The water inlet pipe (7) and the air inlet pipe (8) are evenly provided with bends (19), which are located inside the distribution plate (14).

4. The boiler energy-saving device as described in claim 1, characterized in that, The flow divider (14) is fixedly connected to a bracket and a flow guide plate (20) is fixedly connected to the bracket. The flow guide plate (20) has a conical structure.

5. A boiler energy-saving device as described in claim 1, characterized in that, The connecting frame (10) has a groove on one side and an operating plate (18) is in contact with the groove. A positioning rod is inserted into the operating plate (18) and the positioning rod is threadedly connected to the connecting frame (10).

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