Efficient water pipe waste heat boiler

Abstract

The utility model relates to the technical field of boilers, in particular to an efficient water pipe waste heat boiler which comprises a boiler body, an upper boiler barrel is installed on the top of the boiler body, a smoke inlet is formed in one end of the boiler body, a smoke exhaust pipe is connected to the other end of the boiler body, an energy saver is connected to the outer end of the smoke exhaust pipe, and a plurality of headers are installed on the upper side and the lower side in the boiler body. According to the efficient water pipe waste heat boiler, the multiple sets of collecting boxes and convection pipes are arranged in the boiler body and matched with the ascending pipes and the descending pipes, an efficient water circulation loop is formed, and the heat exchange efficiency is effectively improved. And meanwhile, the energy saver connected with the outer end of the smoke exhaust pipe further recovers waste heat in the exhausted smoke, the temperature of the exhausted smoke is reduced, and the overall energy efficiency of the boiler is remarkably improved. The refractory bricks, the aluminum silicate heat preservation layer and the refractory concrete layer are arranged on the inner wall of the boiler body, so that the high-temperature resistance and the heat preservation effect of the boiler are improved, and the service life of the boiler is prolonged. The arrangement of the ash removal door facilitates the cleaning and maintenance of the boiler, and ensures the long-term stable operation of the boiler.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a high-efficiency water tube waste heat boiler. Background Art

[0002] In the field of boiler technology, improving energy efficiency and reducing emissions have always been important research directions.

[0003] Traditional boilers often suffer from low thermal energy utilization, inadequate waste heat recovery, and suboptimal structures, leading to energy waste and environmental pollution. In particular, many boilers operate at high exhaust temperatures, failing to effectively recycle this heat, thus impacting overall efficiency. Therefore, developing a water-tube waste heat boiler that efficiently utilizes waste heat, possesses a rational structure, and operates reliably is crucial for improving energy efficiency and reducing environmental pollution. Utility Model Content

[0004] The purpose of the present invention is to provide a high-efficiency water tube waste heat boiler to solve the problems of low thermal energy utilization, insufficient waste heat recovery and insufficient structural optimization during operation of traditional boilers proposed in the above background technology, which lead to energy waste and environmental pollution.

[0005] To achieve the above-mentioned objectives, the utility model provides a high-efficiency water tube waste heat boiler, comprising a furnace body, an upper boiler drum is installed on the top of the furnace body, a smoke inlet is provided at one end of the furnace body, a smoke exhaust pipe is connected to the other end of the furnace body, the outer end of the smoke exhaust pipe is connected to an energy saver, and a plurality of collecting boxes are installed on the upper and lower sides of the interior of the furnace body, convection tubes are vertically connected between the collecting boxes, an ascending pipe is connected between the upper collecting box and the upper boiler drum, and a descending pipe is connected between the lower collecting box and the upper boiler drum.

[0006] Preferably, the inner walls on both sides of the furnace body are provided with refractory bricks, the outer sides of the refractory bricks are provided with an aluminum silicate insulation layer, and the top inner wall of the furnace body is installed with a refractory concrete layer.

[0007] Preferably, a ash cleaning door is provided on one side of the bottom of the furnace body.

[0008] Preferably, a water level gauge is installed at one end of the upper drum, a drum drain pipe is connected to the bottom of one end of the upper drum, and a main steam valve seat, a safety valve seat and a pressure gauge seat are installed at the top of the upper drum.

[0009] Preferably, one side of the upper drum is connected to a water inlet pipe seat, and the bottom of the upper drum is connected to a water discharge pipe seat.

[0010] Preferably, the outer side of the energy saver is connected to an inlet and outlet water pipe seat.

[0011] Preferably, a header drain pipe is connected to the bottom of the header.

[0012] Preferably, multiple groups of upper and lower headers are provided inside the furnace body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] In this high-efficiency water-tube waste heat boiler, multiple sets of headers and convection tubes within the furnace, combined with risers and downcomers, form a highly efficient water circulation loop, effectively improving heat exchange efficiency. Furthermore, an economizer connected to the outer end of the exhaust pipe further recovers waste heat from the exhaust, reducing exhaust temperature and significantly enhancing the boiler's overall energy efficiency.

[0015] Furthermore, the refractory bricks, aluminum silicate insulation, and refractory concrete layers on the furnace's inner wall not only enhance the boiler's high-temperature resistance and thermal insulation, but also extend its service life. The ash cleaning door facilitates cleaning and maintenance, ensuring long-term, stable operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view structural diagram of the utility model;

[0017] Figure 2 This is a side structural diagram of the present utility model;

[0018] Figure 3 This is a schematic diagram of the top view of the structure of the utility model;

[0019] Figure 4 It is a partial structural diagram of the utility model;

[0020] The meaning of each number in the figure is:

[0021] 1. Furnace body; 11. Smoke inlet; 12. Refractory bricks; 13. Aluminum silicate insulation layer; 14. Refractory concrete layer; 15. Soot cleaning door; 2. Upper boiler drum; 21. Water level gauge; 22. Boiler drum drain pipe; 23. Main steam valve seat; 24. Safety valve seat; 25. Pressure gauge seat; 26. Water inlet seat; 27. Drain seat; 3. Smoke exhaust pipe; 4. Economizer; 41. Inlet and outlet pipe seats; 5. Header; 51. Header drain pipe; 6. Riser; 7. Downcomer; 8. Convection pipe. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0023] The utility model provides a kind of efficient water pipe waste heat boiler, as shown in figure Figure 1-Figure 4 The upper drum installed on the top of furnace body is connected with several header tanks inside furnace body by rising pipe and falling pipe, and complete water circulation loop is formed.When flue gas enters furnace body from smoke inlet, its heat energy is transferred to water in water circulation system through convection pipe, and heat exchange is realized.Subsequently, flue gas is discharged from furnace body through smoke exhaust pipe, and further waste heat is recovered in energy saver connected with the outer end of smoke exhaust pipe, which effectively reduces the exhaust gas temperature and significantly improves the heat energy utilization rate of boiler.

[0024] This design not only ensures the efficient operation of boiler, but also reduces energy waste and environmental pollution through waste heat recovery.Meanwhile, the multiple groups of header tanks and convection pipes installed on the upper and lower sides inside furnace body increase the heat exchange area and improve the heat exchange efficiency, so that the boiler not only provides stable heat energy output, but also has good energy-saving effect.

[0025] In this embodiment, refractory bricks 12 are arranged on the inner walls of both sides of furnace body 1, which effectively improves the high-temperature resistance of furnace body and protects the furnace structure from damage by high-temperature flue gas.Aluminum silicate insulation layer 13 is arranged on the outer side of refractory bricks 12, which has good insulation effect, reduces heat loss from furnace body to the outside, improves the thermal efficiency of boiler, and refractory concrete layer 14 is installed on the top inner wall of furnace body 1, which further enhances the high-temperature resistance and insulation capacity of furnace top and ensures the safe and stable operation of boiler.

[0026] Specifically, ash removal door 15 is arranged on one side of the bottom of furnace body 1, which facilitates cleaning and maintenance work inside boiler.By opening ash removal door regularly, accumulated ash and debris at the bottom of furnace body can be removed, keeping the inside of boiler clean and unobstructed, which helps to improve the thermal efficiency of boiler and prolong its service life.

[0027] Furthermore, a water level gauge 21 is installed at one end of the upper drum 2, which can monitor the water level in the boiler in real time and ensure that the boiler operates within a safe water level range. A boiler drain pipe 22 is connected to the bottom of one end of the upper drum 2 to facilitate the regular discharge of dirt and impurities in the boiler, keeping the boiler clean. The top of the upper drum 2 is equipped with a main steam valve seat 23, a safety valve seat 24, and a pressure gauge seat 25. These are used to control the steam output of the boiler, ensure the safe operation of the boiler, and monitor the pressure inside the boiler, thereby improving the safety and controllability of the boiler.

[0028] Furthermore, a water inlet pipe seat 26 is connected to one side of the upper drum 2 for replenishing water into the boiler to ensure the normal operation of the boiler. A drain pipe seat 27 is connected to the bottom of the upper drum 2 to facilitate the discharge of water in the boiler when needed, thereby facilitating the maintenance and inspection of the boiler.

[0029] Furthermore, the outer side of the economizer 4 is connected to an inlet and outlet pipe seat 41. This realizes the connection between the economizer and the boiler water circulation system, so that the economizer can recover the waste heat in the exhaust gas and transfer it to the water in the water circulation system, further improving the thermal efficiency of the boiler and reducing energy consumption.

[0030] Furthermore, the bottom of the header 5 is connected to a header drain pipe 51. This facilitates regular discharge of dirt and impurities in the header, keeps the header clean and unobstructed, and helps improve the heat exchange efficiency of the boiler and extend its service life.

[0031] Furthermore, multiple sets of headers 5 are installed inside the furnace body 1, both at the upper and lower levels. This increases the heat exchange area and improves heat exchange efficiency. The multiple sets of headers also make the boiler's water circulation system more stable and reliable, helping to improve the boiler's overall performance and operational stability.

[0032] When the high-efficiency water-tube waste heat boiler of the present invention is in use, flue gas first enters the furnace body through the smoke inlet 11 at one end of the furnace body 1. As the flue gas flows within the furnace body, its heat energy is transferred to the water in the water circulation system through the convection tubes 8. The convection tubes 8 are vertically connected between the upper and lower headers 5 inside the furnace body, forming the main area for heat exchange. The upper header 5 is connected to the upper drum 2 via the riser 6, and the lower header 5 is connected to the upper drum 2 via the downcomer 7, forming a complete water circulation loop. During the circulation process, the water continuously absorbs the heat energy of the flue gas, achieving heat exchange.

[0033] After heat exchange, the flue gas temperature decreases and is then discharged from the furnace through the flue gas exhaust pipe 3. An economizer 4, connected to the outer end of the flue gas exhaust pipe 3, further recovers waste heat from the flue gas and transfers it to the water circulation system, thereby improving the boiler's thermal efficiency. Water inlet and outlet pipe sockets 41, connected to the outer side of the economizer 4, connect the economizer to the boiler's water circulation system, ensuring smooth waste heat recovery.

[0034] A water level gauge 21, mounted at one end of the upper drum 2, monitors the water level in the boiler in real time, ensuring that the boiler operates within a safe range. The drum drain pipe 22 regularly drains dirt and impurities from the boiler, keeping the interior clean. The header drain pipe 51 also regularly drains dirt and impurities from the header, keeping it clean and unobstructed.

[0035] The main steam valve pipe seat 23 installed on the top of the upper drum 2 is used to control the steam output of the boiler.

[0036] The safety valve pipe seat 24 automatically opens when the pressure inside the boiler is too high to ensure the safe operation of the boiler. The pressure gauge pipe seat 25 is used to monitor the pressure inside the boiler and provides important parameters for boiler operation.

[0037] A dust cleaning door 15, located on one side of the bottom of the furnace body 1, facilitates cleaning and maintenance of the boiler interior. By regularly opening the door, accumulated dust and debris can be removed from the bottom of the furnace body. A water inlet pipe socket 26, connected to one side of the upper drum 2, replenishes water into the boiler to ensure normal operation. A drain pipe socket 27, connected to the bottom of the upper drum 2, drains water from the boiler when needed, facilitating boiler maintenance and overhaul.

[0038] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency water tube waste heat boiler, comprising a furnace body (1), characterized in that: An upper drum (2) is installed on the top of the furnace body (1), a smoke inlet (11) is provided at one end of the furnace body (1), a smoke exhaust pipe (3) is connected to the other end of the furnace body (1), the outer end of the smoke exhaust pipe (3) is connected to an energy saver (4), a plurality of headers (5) are installed on the upper and lower sides of the interior of the furnace body (1), convection pipes (8) are vertically connected between the headers (5), an ascending pipe (6) is connected between the upper header (5) and the upper drum (2), and a descending pipe (7) is connected between the lower header (5) and the upper drum (2).

2. The high-efficiency water tube waste heat boiler according to claim 1, characterized in that: Refractory bricks (12) are provided on both inner walls of the furnace body (1), an aluminum silicate insulation layer (13) is provided on the outer side of the refractory bricks (12), and a refractory concrete layer (14) is installed on the top inner wall of the furnace body (1).

3. The high-efficiency water tube waste heat boiler according to claim 1, characterized in that: A dust cleaning door (15) is provided on one side of the bottom of the furnace body (1).

4. The high-efficiency water tube waste heat boiler according to claim 1, characterized in that: A water level gauge (21) is installed at one end of the upper drum (2), a drum sewage pipe (22) is connected to the bottom of one end of the upper drum (2), and a main steam valve pipe seat (23), a safety valve pipe seat (24), and a pressure gauge pipe seat (25) are installed at the top of the upper drum (2).

5. The high-efficiency water tube waste heat boiler according to claim 1, characterized in that: One side of the upper drum (2) is connected to a water inlet pipe seat (26), and the bottom of the upper drum (2) is connected to a water discharge pipe seat (27).

6. The high-efficiency water tube waste heat boiler according to claim 1, characterized in that: The outer side of the energy saver (4) is connected to a water inlet and outlet pipe seat (41).

7. The high-efficiency water tube waste heat boiler according to claim 1, characterized in that: The bottom of the header (5) is connected to a header drain pipe (51).

8. The high-efficiency water tube waste heat boiler according to claim 1, characterized in that: Multiple groups of upper and lower headers (5) are provided inside the furnace body (1).

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