Marine hot water boiler

Abstract

This utility model relates to the field of boiler technology, specifically a marine hot water boiler, comprising a boiler body. An upper water chamber and a lower water chamber are respectively installed at the upper and lower ends of the boiler body, connected by several heating pipes. A high-temperature exhaust gas inlet is provided on one side of the boiler body, and an exhaust gas outlet is provided on the other side. Exhaust gas enters through the exhaust gas inlet, undergoes heat exchange with the water inside the heating pipes, and then exits through the exhaust gas outlet. In terms of heat exchange efficiency, the upper and lower water chambers inside the boiler body are connected by heating pipes, and the outer wall of the heating pipes is integrally formed with heat exchange fins. Additionally, a smoke deflector is installed within the flue gas passage. Exhaust gas enters through the high-temperature exhaust gas inlet, undergoes heat exchange with the water inside the heating pipes, the heat exchange fins increase the contact area between the heating pipes and the exhaust gas, and the smoke deflector extends the flow path of the exhaust gas within the boiler body, ensuring sufficient heat transfer between the exhaust gas and the water inside the heating pipes.

Description

Technical Field

[0001] This utility model relates to the field of boiler technology, and more specifically, to a marine hot water boiler. Background Technology

[0002] During ship operation, there is a specific demand for hot water supply, in which marine hot water boilers play a crucial role. Marine boilers differ significantly from land-based boilers. Due to the limited space on a ship, their shape, size, and weight are strictly limited, while also needing to withstand conditions such as rolling, heeling, and impacts during navigation.

[0003] Currently, numerous technical solutions have been proposed and applied in the field of marine hot water boilers. For example, Chinese patent CN201020174877 discloses a marine waste gas hot water boiler composed of multiple components, including a waste gas inlet, a waste gas three-way valve assembly, a chimney, a waste gas hot water boiler, and a drain outlet. The waste gas three-way valve assembly automatically controls the switching of the waste gas inlet to either the chimney or the waste gas hot water boiler, thus utilizing the waste gas. However, this boiler still has room for improvement in terms of heat exchange efficiency, equipment compactness, and ease of maintenance.

[0004] Traditional marine hot water boilers often employ simple structural designs, resulting in insufficient heat exchange and low energy efficiency, failing to effectively meet the growing energy-saving demands of ships. Some marine hot water boilers also have inefficient spatial layouts, occupying excessive valuable ship space and hindering the installation and operation of other equipment. Furthermore, maintenance and cleaning of some boilers are complex, increasing the labor and time costs of ship operation. Utility Model Content

[0005] The purpose of this utility model is to provide a marine hot water boiler to solve the problem mentioned in the background art, which is that traditional marine hot water boilers partially adopt simple structural designs, have insufficient heat exchange processes, resulting in low energy utilization and failing to effectively meet the growing energy-saving needs of ships.

[0006] To achieve the above objectives, this utility model provides a marine hot water boiler, including a boiler body. The upper and lower ends of the boiler body are respectively equipped with an upper water chamber and a lower water chamber. The upper water chamber and the lower water chamber are connected by a plurality of heating pipes. A high-temperature exhaust gas inlet is provided on one side of the boiler body, and an exhaust gas outlet is provided on the other side of the boiler body. The exhaust gas enters from the exhaust gas inlet, undergoes water-heat exchange with the heating pipes, and is then discharged from the exhaust gas outlet.

[0007] This design features an upper and lower water chamber at the top and bottom of the furnace body, connected by a heating pipe to form a water circulation channel. High-temperature exhaust gas enters from the high-temperature exhaust gas inlet on one side of the furnace body. During its flow within the furnace body, it exchanges heat with the water inside the heating pipe, transferring heat to the water. The exhaust gas is then discharged from the exhaust gas outlet on the other side, thus realizing the process of using the waste heat of ship exhaust gas to heat water.

[0008] Preferably, the outer wall of the furnace body is equipped with a heat insulation layer.

[0009] This feature involves installing an insulation layer on the outer wall of the furnace. The insulation layer effectively prevents heat from the furnace interior from being transferred to the external environment, and its heat insulation performance reduces the amount of heat lost to the surrounding environment through the outer wall of the furnace.

[0010] Preferably, the interior of the furnace body is located between the upper water chamber and the lower water chamber as a flue gas passage, and a smoke deflector is installed in the flue gas passage.

[0011] This feature involves installing a baffle plate in the flue gas passage between the upper and lower water chambers inside the furnace. When the exhaust gas flows through the flue gas passage, the baffle plate changes the flow direction of the exhaust gas, prolonging the residence time and flow path of the exhaust gas in the furnace, and increasing the contact time between the exhaust gas and the heating tubes.

[0012] Preferably, the bottom of the furnace body is equipped with support legs.

[0013] This feature involves installing support legs at the bottom of the boiler body. These legs provide support, holding the boiler at a certain height and maintaining a certain distance between the hot water boiler and the mounting surface, thus ensuring the stable placement of the hot water boiler on the ship.

[0014] Preferably, the top of the furnace body is provided with an inspection hole, a safety valve, and a pressure gauge.

[0015] This feature includes an inspection hole on the top of the furnace body, allowing staff to easily inspect and maintain components such as the heating pipes and smoke deflectors inside the furnace. The safety valve automatically opens when the pressure inside the furnace exceeds a set value, releasing pressure and preventing accidents caused by excessive pressure. The pressure gauge displays the pressure value inside the furnace in real time, allowing staff to monitor the pressure situation inside the furnace.

[0016] Preferably, a drain pipe is connected to the bottom of the drain chamber, a drain valve is installed on the drain pipe, and a cleaning port is provided on one side of the drain chamber.

[0017] This feature includes a drain pipe connected to the bottom of the drain chamber and a drain valve installed. When sewage needs to be discharged, the drain valve is opened, and dirt and impurities in the drain chamber are discharged through the drain pipe under gravity. A cleaning port is provided on one side of the drain chamber to facilitate cleaning operations by staff.

[0018] Preferably, the outer wall of the heated tube is integrally formed with several heat exchange fins.

[0019] This feature incorporates heat exchange fins integrally molded on the outer wall of the heating pipe, increasing the contact area between the heating pipe and the exhaust gas. During heat exchange between the exhaust gas and the heating pipe, more exhaust gas can come into contact with the surface of the heating pipe, accelerating the heat transfer rate.

[0020] Preferably, an outlet pipe is connected to one side of the upper water chamber, and a return pipe is connected to one side of the lower water chamber. Both the return pipe and the outlet pipe have several small holes on their surfaces, and valves are installed at the outer ends of both the return pipe and the outlet pipe.

[0021] This system features an upper water chamber connected to an outlet pipe and a lower water chamber connected to a return pipe. Small holes are formed on the surfaces of both the outlet and return pipes to create a uniform water flow channel. Valves are installed at the external ends to control the flow of water. Hot water flows out through the small holes in the outlet pipe, while cold water flows in through the small holes in the return pipe, achieving water circulation. The valves can adjust the water flow rate and speed.

[0022] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0023] In this marine hot water boiler, regarding heat exchange efficiency, the upper and lower water chambers inside the boiler are connected by heating pipes, and the outer wall of the heating pipes is integrally formed with heat exchange fins. Additionally, baffle plates are installed within the flue gas passage. Exhaust gas enters through a high-temperature exhaust gas inlet, exchanges heat with the water inside the heating pipes, and the heat exchange fins increase the contact area between the heating pipes and the exhaust gas. The baffle plates extend the flow path of the exhaust gas within the boiler, allowing for thorough heat transfer between the exhaust gas and the water in the heating pipes, significantly improving heat exchange efficiency, effectively enhancing energy utilization, and meeting the energy-saving requirements of ships.

[0024] In terms of structural compactness, the reasonable spatial layout scientifically places components such as the upper water chamber, lower water chamber, and heating pipes inside the furnace body, reducing unnecessary space occupation. Compared with traditional boilers, it achieves functional integration within the limited space of the ship, without affecting the installation and operation of other equipment on the ship, and better adapts to the characteristics of limited space on the ship.

[0025] In terms of ease of maintenance, a drain pipe with a drain valve is connected to the bottom of the lower chamber, and a cleaning port is provided on one side for easy drainage and cleaning of the boiler's interior. An inspection hole is provided on the top of the boiler body for easy inspection and maintenance by staff. These designs simplify boiler maintenance operations and reduce the labor and time costs of ship operation.

[0026] In addition, the installation of an insulation layer on the outer wall of the furnace body can reduce heat loss and further improve energy utilization efficiency; the safety valve and pressure gauge installed on the top of the furnace body ensure the safety of the boiler during operation, and can promptly detect and deal with problems such as abnormal pressure, ensuring the stable and reliable operation of the boiler. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0028] Figure 2 This is a schematic diagram of the structure of the heat-receiving pipe in this utility model;

[0029] Figure 3 This is a schematic diagram of the return water pipe in this utility model;

[0030] The meanings of the labels in the diagram are as follows:

[0031] 1. Furnace body; 11. Insulation layer; 12. High-temperature exhaust gas inlet; 13. Exhaust gas outlet; 14. Baffle plate; 15. Support leg; 16. Inspection hole; 17. Safety valve; 18. Pressure gauge; 2. Upper water chamber; 3. Lower water chamber; 31. Drain pipe; 32. Cleaning port; 4. Heating pipe; 41. Heat exchange fins; 5. Return water pipe; 51. Small hole; 52. Valve; 6. Water outlet pipe. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] This utility model provides a marine hot water boiler, such as Figures 1-3 As shown, the furnace includes a furnace body 1. The upper water chamber 2 and the lower water chamber 3 are installed at the upper and lower ends of the furnace body 1, respectively. The upper water chamber 2 and the lower water chamber 3 are connected by several heating pipes 4. A high-temperature exhaust gas inlet 12 is provided on one side of the furnace body 1, and an exhaust gas outlet 13 is provided on the other side of the furnace body 1. The exhaust gas enters from the exhaust gas inlet 12, undergoes water-heat exchange with the heating pipes 4, and is then discharged from the exhaust gas outlet 13.

[0034] The furnace body 1 has an upper water chamber 2 and a lower water chamber 3 at its upper and lower ends, which are connected by several heating pipes 4 to form a water circulation channel. High-temperature exhaust gas enters from the high-temperature exhaust gas inlet 12 on one side of the furnace body 1. During its flow within the furnace body 1, it exchanges heat with the water inside the heating pipes 4, transferring heat to the water. Afterward, the exhaust gas is discharged from the exhaust gas outlet 13 on the other side, realizing the process of heating water using the waste heat of ship exhaust gas. This effectively utilizes the waste heat of exhaust gas generated during ship operation, converting it into the heat energy required for hot water, achieving secondary energy utilization, reducing the energy consumption of ship hot water supply, and the reasonable structural design lays the foundation for subsequent improvement of heat exchange efficiency and overall functional realization.

[0035] In this embodiment, the outer wall of the furnace body 1 is equipped with a heat insulation layer 11.

[0036] An insulation layer 11 is installed on the outer wall of the furnace body 1. The insulation layer 11 can effectively prevent the transfer of heat from the inside of the furnace body 1 to the external environment. Its heat insulation performance reduces the amount of heat lost to the surrounding environment through the outer wall of the furnace body 1. This reduces heat loss, improves energy utilization efficiency, avoids heat waste, maintains a stable temperature inside the furnace body 1, ensures the heat exchange effect during the operation of the hot water boiler, and reduces additional energy consumption caused by heat loss.

[0037] Specifically, the interior of the furnace body 1 is located between the upper water chamber 2 and the lower water chamber 3 as a flue gas passage, and a smoke deflector 14 is installed inside the flue gas passage.

[0038] The flue gas passage is located between the upper water chamber 2 and the lower water chamber 3 within the furnace body 1. A baffle plate 14 is installed within this passage. As the exhaust gas flows through the passage, the baffle plate 14 changes the flow direction, extending the residence time and flow path of the exhaust gas within the furnace body 1. This increases the contact time between the exhaust gas and the water in the heating tubes 4. Prolonging the heat exchange time between the exhaust gas and the water in the heating tubes 4 allows for a more thorough transfer of heat from the exhaust gas to the water, improving heat exchange efficiency and thus enhancing energy utilization. This further strengthens the utilization of waste heat from the hot water boiler.

[0039] Furthermore, support legs 15 are installed at the bottom of the furnace body 1.

[0040] Support legs 15 are installed at the bottom of the furnace body 1. These legs provide support, holding the furnace body 1 at a certain height and maintaining a certain distance between the hot water boiler and the mounting surface, ensuring the stable placement of the hot water boiler on the ship. Providing stable support for the hot water boiler ensures its stability during ship navigation, even in the face of swaying, tilting, and impacts, preventing the boiler from tipping over or shifting, and guaranteeing the safety and stability of equipment operation.

[0041] Furthermore, the top of the furnace body 1 is provided with an inspection hole 16, a safety valve 17, and a pressure gauge 18.

[0042] An inspection hole 16 is provided on the top of the furnace body 1, allowing staff to easily inspect and maintain components such as the heating pipes 4 and the smoke deflector 14 inside the furnace body 1. A safety valve 17 automatically opens when the pressure inside the furnace body 1 exceeds a set value, releasing pressure and preventing accidents caused by excessive pressure. A pressure gauge 18 displays the pressure value inside the furnace body 1 in real time, allowing staff to monitor the internal pressure. The inspection hole 16 facilitates regular inspection and maintenance of the boiler's interior, enabling timely detection and handling of potential problems. The safety valve 17 and pressure gauge 18 together ensure the safe operation of the boiler, preventing dangerous situations such as explosions due to abnormal pressure, and improving the reliability and safety of the hot water boiler.

[0043] Furthermore, a drain pipe 31 is connected to the bottom of the drain chamber 3, a drain valve is installed on the drain pipe 31, and a cleaning port 32 is provided on one side of the drain chamber 3.

[0044] The bottom of the drain chamber 3 is connected to a drain pipe 31 and equipped with a drain valve. When drainage is required, the drain valve is opened, and dirt and impurities in the drain chamber 3 are discharged through the drain pipe 31 under gravity. A cleaning port 32 is provided on one side of the drain chamber 3, which facilitates cleaning operations inside the drain chamber 3 by personnel. This facilitates drainage and cleaning of the boiler interior, timely removal of accumulated dirt and impurities in the drain chamber 3, preventing them from affecting hot water quality and boiler heat exchange efficiency, extending boiler service life, reducing maintenance costs, and ensuring the normal operation of the hot water boiler.

[0045] Furthermore, the outer wall of the heat-receiving tube 4 is integrally formed with several heat exchange fins 41.

[0046] Several heat exchange fins 41 are integrally formed on the outer wall of the heat exchange tube 4, increasing the contact area between the heat exchange tube 4 and the exhaust gas. During heat exchange between the exhaust gas and the heat exchange tube 4, more exhaust gas can come into contact with the surface of the heat exchange tube 4, accelerating the heat transfer rate. This improves heat exchange efficiency, allowing the heat in the exhaust gas to be transferred to the water inside the heat exchange tube 4 more quickly and fully, enhancing energy utilization and improving the heating performance of the hot water boiler. Under the same exhaust gas conditions, it can produce more hot water or reach the required hot water temperature faster.

[0047] Furthermore, an outlet pipe 6 is connected to one side of the upper water chamber 2, and a return pipe 5 is connected to one side of the lower water chamber 3. Several small holes 51 are opened on the surface of both the return pipe 5 and the outlet pipe 6, and valves 52 are installed at the outer ends of both the return pipe 5 and the outlet pipe 6.

[0048] The upper water chamber 2 is connected to an outlet pipe 6 on one side, and the lower water chamber 3 is connected to a return pipe 5 on one side. Both the return pipe 5 and the outlet pipe 6 have several small holes 51 on their surfaces, forming a uniform water flow channel. Valves 52 are installed at the outer ends of both pipes to control the flow of water. Hot water flows out through the small holes 51 in the outlet pipe 6, and cold water flows in through the small holes 51 in the return pipe 5, achieving water circulation. Valves 52 can adjust the water flow rate and speed. This reasonable water circulation design ensures a uniform and stable output of hot water and timely replenishment of cold water, maintaining a stable water level in the boiler and guaranteeing the continuity and stability of the hot water supply. The valves 52 allow operators to easily adjust the hot water flow rate and circulation speed according to actual needs, improving operational flexibility.

[0049] When using the marine hot water boiler of this utility model, firstly, before starting the boiler, water is injected into the boiler through the return water pipe 5. The water flows evenly into the lower water chamber 3 through the small holes 51 on the surface of the return water pipe 5 until the appropriate water level is reached. At this time, the valve 52 at the outer end of the return water pipe 5 is closed. At the same time, check whether the safety valve 17, pressure gauge 18 and other components are normal to ensure that the boiler is in a safe and operable state.

[0050] High-temperature exhaust gas generated during ship operation enters through the high-temperature exhaust gas inlet 12 on one side of the furnace body 1. At this time, the exhaust gas is located in the flue gas passage between the upper water chamber 2 and the lower water chamber 3 inside the furnace body 1. Due to the baffle plate 14 installed in the flue gas passage, the exhaust gas is redirected during its flow, prolonging its residence time and flow path within the furnace body 1, and increasing its contact time with the heat exchange tubes 4. The heat exchange fins 41 integrally formed on the outer wall of the heat exchange tubes 4 increase the contact area with the exhaust gas, allowing the heat in the exhaust gas to be transferred more efficiently and fully to the water inside the heat exchange tubes 4, thus realizing the heat exchange process. After heat exchange, the exhaust gas temperature decreases, and it is discharged from the exhaust gas outlet 13 on the other side of the furnace body 1.

[0051] After absorbing heat, the water in the heating pipe 4 heats up, and due to its lower density, it flows upward into the upper water chamber 2. The hot water then flows out evenly through the small holes 51 on the surface of the outlet pipe 6 for the ship's use. As the hot water flows out, the water level in the lower water chamber 3 drops. At this time, the valve 52 at the outer end of the return pipe 5 is opened, and cold water flows into the lower water chamber 3 through the small holes 51 in the return pipe 5, replenishing the water carried away by the hot water and forming a continuous water circulation process to ensure a stable supply of hot water. Simultaneously, operators can control the water flow speed and flow rate by adjusting the valves 52 at the outer ends of the return pipe 5 and the outlet pipe 6 according to actual hot water usage needs.

[0052] The insulation layer 11 installed on the outer wall of the furnace body 1 provides insulation, effectively preventing heat transfer from the furnace body 1 to the external environment, reducing heat loss, maintaining a stable temperature inside the furnace body 1, ensuring efficient heat exchange, and improving energy utilization efficiency. During operation, the pressure gauge 18 displays the pressure value inside the furnace body 1 in real time. When the pressure inside the furnace body 1 exceeds the set value of the safety valve 17, the safety valve 17 automatically opens to release the pressure, preventing safety accidents such as explosions caused by excessive pressure and ensuring safe boiler operation. Regularly inspect the internal components of the boiler, such as the heating tubes 4 and the smoke baffles 14, through the inspection hole 16 on the top of the furnace body 1 to check for damage, scale buildup, etc. When scale and impurities accumulate in the lower water chamber 3, open the drain valve on the drain pipe 31. Under gravity, the scale and impurities are discharged through the drain pipe 31. Alternatively, the lower water chamber 3 can be manually cleaned through the cleaning port 32 on one side to ensure hot water quality and boiler heat exchange efficiency, extending the boiler's service life.

[0053] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A marine hot water boiler, comprising a boiler body (1), characterized in that: The furnace body (1) has an upper water chamber (2) and a lower water chamber (3) installed at its upper and lower ends respectively. The upper water chamber (2) and the lower water chamber (3) are connected by several heating pipes (4). A high-temperature exhaust gas inlet (12) is provided on one side of the furnace body (1), and an exhaust gas outlet (13) is provided on the other side of the furnace body (1). The exhaust gas enters from the exhaust gas inlet (12), passes through the heating pipes (4) and exchanges water and heat inside the heating pipes (4), and is then discharged from the exhaust gas outlet (13).

2. The marine hot water boiler according to claim 1, characterized in that: The outer wall of the furnace body (1) is equipped with a heat insulation layer (11).

3. The marine hot water boiler according to claim 1, characterized in that: The interior of the furnace body (1) is located between the upper water chamber (2) and the lower water chamber (3) as a flue gas passage, and a smoke deflector (14) is installed in the flue gas passage.

4. The marine hot water boiler according to claim 1, characterized in that: The bottom of the furnace body (1) is equipped with support legs (15).

5. The marine hot water boiler according to claim 1, characterized in that: The top of the furnace body (1) is provided with an inspection hole (16), a safety valve (17), and a pressure gauge (18).

6. The marine hot water boiler according to claim 1, characterized in that: The bottom of the drain chamber (3) is connected to a drain pipe (31), a drain valve is installed on the drain pipe (31), and a cleaning port (32) is provided on one side of the drain chamber (3).

7. The marine hot water boiler according to claim 1, characterized in that: The outer wall of the heat-receiving tube (4) is integrally formed with several heat exchange fins (41).

8. The marine hot water boiler according to claim 1, characterized in that: The upper water chamber (2) is connected to a water outlet pipe (6) on one side, and the lower water chamber (3) is connected to a water return pipe (5) on one side. The surfaces of the water return pipe (5) and the water outlet pipe (6) are provided with several small holes (51). Valves (52) are installed at the outer ends of the water return pipe (5) and the water outlet pipe (6).

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