Double-drum transverse hot water boiler

Abstract

The utility model relates to the technical field of boilers, in particular to a double-drum transversely-arranged hot water boiler which comprises a boiler body, a chain grate is installed at the bottom of the boiler body, a base is installed at the bottom of the chain grate, an upper drum is installed on the upper portion in the boiler body, a lower drum is installed on the lower portion in the boiler body, and the upper drum and the lower drum are transversely arranged. The upper boiler barrel and the lower boiler barrel are connected through a convection bank, and transverse partition plates are installed on the convection bank at equal intervals. According to the hot water boiler with the transversely-arranged double boiler barrels, the water capacity of the boiler is increased through the transversely-arranged design of the double boiler barrels, and therefore the safety coefficient and the operation stability of the boiler are improved. Meanwhile, the convection bank is arranged between the upper boiler barrel and the lower boiler barrel, and the transverse partition plates are installed on the convection bank at equal intervals, so that a horizontal flue gas channel is formed, flue gas can transversely wash and flow, the residence time of the flue gas in the boiler is prolonged, the heat exchange efficiency is improved, and the exhaust temperature of the flue gas is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a double-drum horizontal hot water boiler. Background Art

[0002] In the field of energy and industrial production, boilers are a key thermal energy conversion equipment, and their performance and efficiency directly affect the economic benefits of energy utilization and industrial production. Traditional boiler designs can no longer meet modern industrial and environmental requirements in some aspects, especially in terms of energy efficiency, environmental protection, safety and load adaptability.

[0003] Traditional single-drum or vertical boilers, although simple in structure, have limitations in thermal efficiency and load adaptability. These boilers are usually difficult to adapt to large load changes and perform poorly in terms of heat recovery and environmental emissions. In addition, with increasingly stringent environmental regulations, traditional boiler designs are also under pressure to reduce harmful emissions. Utility Model Content

[0004] The purpose of the utility model is to provide a double-drum horizontal hot water boiler to solve the problem that the traditional single-drum or vertical boiler proposed in the above background technology has simple structure but has limitations in thermal efficiency and load adaptability. These boilers are usually difficult to adapt to large load changes and have poor performance in heat recovery and environmental emissions.

[0005] To achieve the above-mentioned purpose, the utility model provides a double-drum horizontal hot water boiler, including a furnace body, a chain grate is installed at the bottom of the furnace body, a base is installed at the bottom of the chain grate, an upper drum is installed at the upper part of the furnace body, and a lower drum is installed at the lower part of the furnace body. The upper drum and the lower drum are both arranged horizontally, and the upper drum and the lower drum are connected by a convection tube bundle. The convection tube bundle is equipped with horizontal partitions arranged at equal intervals. The horizontal partitions form horizontal flue gas channels to make the flue gas flow horizontally. The top side of the upper drum is externally connected to a heat return water pipeline.

[0006] Preferably, a furnace is provided at the front of the interior of the furnace body, a membrane wall is installed on the inner wall of the furnace, and the upper end of the membrane wall is connected to the upper drum.

[0007] Preferably, a protective frame is installed outside the furnace body.

[0008] Preferably, a plurality of ash collecting troughs are provided inside the base, the top openings of the ash collecting troughs are directly opposite to the bottom ash discharge ports of the chain grate, and the bottoms of the ash collecting troughs are connected to ash dropping pipes.

[0009] Preferably, an economizer and an air preheater are sequentially connected to the outside of the flue gas discharge port of the furnace body.

[0010] Preferably, a steam collecting tank is installed on the top of the upper boiler drum, and a heat supply outlet pipe is connected to one side of the steam collecting tank.

[0011] Preferably, one side of the upper drum is connected to an upper header, one side of the lower drum is connected to a lower header, and the upper header and the lower header are connected via a downcomer.

[0012] Preferably, a safety valve, a vent valve and a pressure gauge are installed on the top of the upper drum in sequence.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In this double-drum horizontal hot water boiler, the horizontal design of the double drum increases the water capacity of the boiler, thereby improving the safety factor and operation stability of the boiler. At the same time, by arranging a convection tube bundle between the upper drum and the lower drum, and installing equally spaced horizontal baffles on the convection tube bundle, a horizontal flue gas channel is formed, allowing the flue gas to flow horizontally, which not only prolongs the residence time of the flue gas in the boiler and improves the heat exchange efficiency, but also effectively reduces the exhaust temperature of the flue gas, thereby reducing the loss of heat energy.

[0015] In addition, the boiler is also equipped with an economizer and an air preheater to further recover the waste heat in the flue gas and improve energy efficiency. The design of the ash trough and ash drop pipe facilitates the cleaning and maintenance of the boiler and reduces operating costs. In summary, the double-drum horizontal hot water boiler has shown significant technical effects in improving energy efficiency, reducing pollutant emissions, enhancing safety and load adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front structural schematic diagram of the utility model;

[0017] Figure 2 It is a side structural schematic diagram of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the base in the utility model.

[0019] The meaning of each number in the figure is:

[0020] 1. Furnace body; 11. Membrane wall; 12. Protective frame; 2. Chain grate; 3. Base; 31. Ash collecting trough; 32. Ash dropping pipe; 4. Upper header; 5. Lower header; 6. Upper boiler drum; 61. Steam collecting tank; 62. Heat outlet pipe; 63. Downcomer; 64. Convection tube bundle; 7. Lower boiler drum; 8. Heat return water pipeline; 9. Economizer; 10. Air preheater. DETAILED DESCRIPTION

[0021] 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.

[0022] The utility model provides a double-drum horizontal hot water boiler, such as Figure 1-Figure 3 As shown, it includes a furnace body 1, a chain grate 2 is installed at the bottom of the furnace body 1, a base 3 is installed at the bottom of the chain grate 2, an upper drum 6 is installed above the interior of the furnace body 1, and a lower drum 7 is installed below the interior of the furnace body 1. The upper drum 6 and the lower drum 7 are both arranged horizontally, and the upper drum 6 and the lower drum 7 are connected by a convection tube bundle 64. The convection tube bundle 64 is equipped with horizontal line partitions arranged at equal intervals. The horizontal partitions form a horizontal flue gas channel to allow the flue gas to flow horizontally. The top side of the upper drum 6 is externally connected to a heat return water pipeline 8. The horizontal arrangement of the upper drum installed above the interior of the furnace body and the lower drum installed below the bottom realizes the compactness and efficiency of the boiler structure. This layout increases the water capacity of the boiler, thereby improving the operating stability and safety of the boiler.

[0023] Secondly, the upper drum and the lower drum are connected by convection tube bundles, which are equipped with equally spaced horizontal baffles to form a horizontal flue gas channel. This design allows the flue gas to flow horizontally, prolonging the residence time of the flue gas inside the boiler, thereby improving the heat exchange efficiency. This means that more heat energy can be transferred from the flue gas to the boiler's water system, thereby improving the overall thermal efficiency of the boiler.

[0024] Finally, the top side of the upper drum is connected to the heating return pipe. This design allows hot water to be recycled efficiently, and also facilitates the output and recovery of hot water to meet different heating or hot water needs. This not only improves energy efficiency, but also enhances the flexibility and practicality of the boiler system.

[0025] In this embodiment, a furnace is provided in the front of the furnace body 1 , and a membrane wall 11 is installed on the inner wall of the furnace. The upper end of the membrane wall 11 is connected to the upper drum 6 to achieve the effect of heat preservation of the inner wall of the furnace body 1 .

[0026] Specifically, a protective frame 12 is installed outside the furnace body 1 to provide external protection for the furnace body 1 .

[0027] Furthermore, a plurality of ash collecting troughs 31 are arranged inside the base 3, and the top openings of the ash collecting troughs 31 face the bottom ash discharge ports of the chain grate 2. The bottoms of the ash collecting troughs 31 are connected with ash dropping pipes 32, and the bottom ends of the ash dropping pipes 32 are provided with openings for collecting and cleaning dust.

[0028] Furthermore, an economizer 9 and an air preheater 10 are sequentially connected to the outside of the flue gas discharge port of the furnace body 1 to discharge the flue gas after heat collection and utilization.

[0029] Furthermore, a steam collecting tank 61 is installed on the top of the upper drum 6, and a heat outlet pipe 62 is connected to one side of the steam collecting tank 61 for outputting hot gas for heating use.

[0030] Furthermore, one side of the upper drum 6 is connected to the upper header 4, and one side of the lower drum 7 is connected to the lower header 5. The upper header 4 and the lower header 5 are connected via a downcomer 63 to facilitate the upward and downward flow of water.

[0031] Furthermore, a safety valve, a vent valve and a pressure gauge are sequentially installed on the top of the upper drum 6, which has a good pressure monitoring effect.

[0032] When the double-drum horizontal hot water boiler of the utility model is in use, fuel is put into the furnace, where it burns to produce high-temperature flue gas (as shown in the front furnace part of the furnace body 1). These high-temperature flue gases rise and first contact the membrane wall 11 installed on the inner wall of the furnace, and transfer part of the heat energy to the water system of the boiler through the membrane wall 11. Then, the flue gas continues to rise and enters the convection tube bundle 64 area.

[0033] In the convection tube bundle 64 area, due to the installation of equally spaced horizontal baffles on the convection tube bundle, a horizontal flue gas channel is formed, allowing the flue gas to flow horizontally. This design prolongs the residence time of the flue gas inside the boiler, thereby improving the heat exchange efficiency between the flue gas and the water system. More heat energy is therefore transferred from the flue gas to the boiler's water system, thereby improving the overall thermal efficiency of the boiler.

[0034] During the heat exchange process, the water in the upper drum 6 and the lower drum 7 is heated to form hot water. The hot water is efficiently transported to the place where heating is needed through the heating return water pipeline 8 and the heating outlet pipe 62 to meet the heating or hot water demand. At the same time, the water system of the boiler realizes the circulation of water through the connection of the upper header 4, the lower header 5 and the downcomer 63, ensuring the continuous and stable operation of the boiler.

[0035] In addition, the boiler is also equipped with an economizer 9 and an air preheater 10, which further recovers the waste heat in the flue gas and improves the energy utilization efficiency. During operation, safety devices such as safety valves, vent valves and pressure gauges monitor the pressure state of the upper drum 6 in real time to ensure that the boiler operates within a safe range.

[0036] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A double-drum horizontal hot water boiler, comprising a furnace body (1), characterized in that: A chain grate (2) is installed at the bottom of the furnace body (1), a base (3) is installed at the bottom of the chain grate (2), an upper boiler drum (6) is installed at the upper part of the furnace body (1), and a lower boiler drum (7) is installed at the lower part of the furnace body (1), the upper boiler drum (6) and the lower boiler drum (7) are both arranged horizontally, the upper boiler drum (6) and the lower boiler drum (7) are connected by a convection tube bundle (64), and the convection tube bundle (64) is equipped with horizontal partitions arranged at equal intervals, and the top side of the upper boiler drum (6) is externally connected to a heat return water pipeline (8).

2. The double-drum horizontal hot water boiler according to claim 1, characterized in that: A furnace is arranged at the front of the furnace body (1), and a membrane wall (11) is installed on the inner wall of the furnace. The upper end of the membrane wall (11) is connected to the upper drum (6).

3. The double-drum horizontal hot water boiler according to claim 1, characterized in that: A protective frame (12) is installed outside the furnace body (1).

4. The double-drum horizontal hot water boiler according to claim 1, characterized in that: A plurality of ash collecting grooves (31) are arranged inside the base (3), the top openings of the ash collecting grooves (31) are directly opposite to the bottom ash discharge openings of the chain grate (2), and the bottoms of the ash collecting grooves (31) are connected to ash dropping pipes (32).

5. The double-drum horizontal hot water boiler according to claim 1, characterized in that: The outside of the flue gas discharge port of the furnace body (1) is connected in sequence to an economizer (9) and an air preheater (10).

6. The double-drum horizontal hot water boiler according to claim 1, characterized in that: A steam collecting tank (61) is installed on the top of the upper boiler drum (6), and a heat supply outlet pipe (62) is connected to one side of the steam collecting tank (61).

7. The double-drum horizontal hot water boiler according to claim 1, characterized in that: One side of the upper drum (6) is connected to an upper header (4), and one side of the lower drum (7) is connected to a lower header (5). The upper header (4) and the lower header (5) are connected via a downcomer (63).

8. The double-drum horizontal hot water boiler according to claim 1, characterized in that: A safety valve, a vent valve and a pressure gauge are sequentially installed on the top of the upper drum (6).

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