Double-loop water supply vertical steam boiler

Abstract

The double-loop water supply vertical steam boiler comprises a boiler, a water supply tank and a loop water supply pipe, a combustion chamber is arranged at the bottom of the boiler, the surface of the combustion chamber is connected with a plurality of supporting legs, the water supply tank is arranged on one side of the boiler, and the interior of the bottom of the water supply tank is divided into a heating chamber through a heat conduction plate. One side of the combustion chamber is communicated with the heating chamber through a waste heat pipeline, the loop water supply pipe is arranged at the top of the water supply water tank, the loop water supply pipe comprises a first water supply pipe and a second water supply pipe, and the first water supply pipe and the second water supply pipe are communicated with each other. When one water supply pipe has the problems of pipeline blockage, valve failure and the like, the other water supply pipe can still supply water to the boiler normally, so that continuous operation of the steam boiler is ensured, serious consequences of product scrapping, equipment damage and the like caused by interruption of steam supply are effectively avoided, and the production risk is greatly reduced.

Description

Technical Field

[0001] This utility model belongs to the field of steam boiler technology, specifically relating to a dual-circuit water supply vertical steam boiler. Background Technology

[0002] In industrial production and daily life, steam, as an efficient energy carrier, is widely used in many fields such as chemical industry, textile industry, food processing, and heating. As a key piece of equipment for generating steam, the performance of steam boilers directly affects production efficiency, energy consumption, and operational safety.

[0003] Existing steam boilers typically operate with a single-loop water supply system. If this system malfunctions, such as due to pipe blockage or pump failure, the entire boiler's water supply will be immediately interrupted, leading to a complete halt in steam supply. This can cause serious production accidents in industrial processes that require a continuous steam supply, resulting not only in decreased product quality and production stoppages but also potential economic losses such as equipment damage. Furthermore, single-loop water supply systems struggle to flexibly respond to changes in steam demand under different operating conditions. When steam consumption fluctuates significantly, the system cannot adjust the water supply in a timely and precise manner, easily leading to unstable steam pressure and affecting the normal operation of steam-using equipment. Utility Model Content

[0004] The purpose of this invention is to provide a dual-circuit water supply vertical steam boiler to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a dual-circuit water supply vertical steam boiler, comprising:

[0006] A boiler, wherein a combustion chamber is provided at the bottom of the boiler and a number of support legs are connected to the surface of the combustion chamber;

[0007] A water supply tank is located on one side of the boiler, and a heating chamber is separated at the bottom of the water supply tank by a heat-conducting plate. The combustion chamber is connected to the heating chamber via a waste heat pipe.

[0008] A loop water supply pipe is located at the top of the water supply tank and is used to supply water to the boiler. The loop water supply pipe includes a first water supply pipe and a second water supply pipe, which are interconnected. The connection point on one side of the first water supply pipe and the second water supply pipe is connected to the boiler through a connecting pipe.

[0009] Preferably, the water supply tank is equipped with a water pump, and the connection point on the other side of the first water supply pipe and the second water supply pipe is connected through the outlet of the water pump.

[0010] Preferably, both the first water supply pipe and the second water supply pipe are equipped with solenoid valves.

[0011] Preferably, the first water supply pipe and the second water supply pipe are also equipped with thermometers.

[0012] Preferably, a filter box is provided at the connection between the waste heat pipe and the heating chamber, and the filter box is slidably inserted into a slot provided in the heating chamber.

[0013] Preferably, the filter box has a mesh plate on its surface and a first filter plate and a second filter plate for filtering waste heat flue gas are slidably connected inside the filter box.

[0014] Preferably, the water supply tank, the first water supply pipe, and the second water supply pipe are all equipped with heat insulation pads, a water supply pipe is provided on one side of the water supply tank, and a smoke exhaust pipe is provided on one side of the heating chamber.

[0015] Preferably, the combustion chamber surface is hinged with an inspection door, and the boiler is provided with several manholes.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] (1) By adopting a dual-circuit water supply design, namely the first water supply pipe and the second water supply pipe, when one of the water supply pipes has problems such as pipe blockage or valve failure, the other water supply pipe can still supply water to the boiler normally, ensuring the continuous operation of the steam boiler. This effectively avoids serious consequences such as product scrapping and equipment damage caused by the interruption of steam supply, greatly reduces production risks, and ensures the stability and economic benefits of production.

[0018] (2) The dual-circuit water supply system can flexibly adjust the water supply of the two water supply pipelines according to the fluctuation of steam consumption. When the steam demand is high, the water supply flow of the two water supply pipelines can be opened at the same time to meet the large amount of steam required for production; while when the steam demand is low, one water supply pipeline can be opened to appropriately reduce the water supply and avoid energy waste, thereby greatly improving production efficiency and product quality.

[0019] (3) By introducing the waste heat generated in the combustion chamber into the heating chamber at the bottom of the water supply tank through the waste heat pipe, the water in the tank can be preheated, making full use of the waste heat that was originally discharged and wasted, reducing the amount of fuel required by the steam boiler to heat the water to boiling, thereby reducing energy costs and improving energy utilization.

[0020] (4) A filter box is installed at the connection between the waste heat pipe and the heating chamber. The first and second filter plates in the filter box can effectively filter impurities and particulate matter in the waste heat flue gas, preventing it from heating the water supply tank and causing more impurities when discharged. At the same time, it also avoids the accumulation of impurities inside the heating chamber, reduces the risk of scaling and corrosion in the heating chamber, and extends the service life of the heating chamber. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the water supply tank of this utility model;

[0023] Figure 3 This is a cross-sectional view of the first water supply pipe of this utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the present invention, showing the flue gas passing through the filter box.

[0025] In the diagram: 1. Boiler; 2. Combustion chamber; 3. Support leg; 4. Water supply tank; 5. Heat conduction plate; 6. Heating chamber; 7. Waste heat pipe; 8. First water supply pipe; 9. Second water supply pipe; 10. Water pump; 11. Water pipe; 12. Solenoid valve; 13. Thermometer; 14. Filter box; 15. Mesh plate; 16. Filter plate; 17. Insulation pad; 18. Water supply pipe; 19. Exhaust pipe; 20. Inspection door; 21. Manhole; 22. Sealing door; 23. Second filter plate. Detailed Implementation

[0026] 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.

[0027] This utility model provides, for example Figure 1-4 The vertical steam boiler with dual-circuit water supply shown includes:

[0028] Boiler 1, wherein the bottom of the boiler 1 is provided with a combustion chamber 2 and the surface of the combustion chamber 2 is connected with a number of support legs 3;

[0029] Water supply tank 4 is located on one side of boiler 1 and a heating chamber 6 is separated at the bottom of water supply tank 4 by heat conduction plate 5. One side of combustion chamber 2 is connected to heating chamber 6 through waste heat pipe 7.

[0030] A loop water supply pipe is located at the top of the water supply tank 4 and is used to supply water to the boiler 1. The loop water supply pipe includes a first water supply pipe 8 and a second water supply pipe 9. The first water supply pipe 8 and the second water supply pipe 9 are interconnected. The connection point on one side of the first water supply pipe 8 and the second water supply pipe 9 is connected to the boiler 1 through a connecting pipe.

[0031] The water supply tank 4 is equipped with a water pump 10, and the connection point on the other side of the first water supply pipe 8 and the second water supply pipe 9 is connected to the outlet of the water pump 10 through the water pipe 11.

[0032] Both the first water supply pipe 8 and the second water supply pipe 9 are equipped with solenoid valves 12. The solenoid valves 12 can control the flow of water in the two water supply pipes. During the boiler 1 start-up phase, one or both water supply pipes can be opened simultaneously, depending on the actual situation. For example, during initial start-up or low-load operation, the first water supply pipe 8 can be opened first, and the passage can be opened by the solenoid valve 12 to allow water to flow into the boiler 1. At this time, the solenoid valve 12 on the second water supply pipe 9 closes the passage. When the steam demand increases and the water supply of a single pipe cannot meet the demand, the solenoid valve 12 on the second water supply pipe 9 is opened to achieve simultaneous water supply from both pipes, ensuring that the boiler has a sufficient water source to generate steam. When the boiler stops operating or is being maintained, the solenoid valve 12 is closed to cut off the water supply, preventing water leakage and unnecessary waste, while ensuring the safety of equipment maintenance.

[0033] The first water supply pipe 8 and the second water supply pipe 9 are also equipped with thermometers 13.

[0034] A filter box 14 is provided at the connection between the waste heat pipe 7 and the heating chamber 6. The filter box 14 is slidably inserted into a slot provided in the heating chamber 6, and a sealing ring is provided at the insertion point of the filter box 14 and the slot. The sealing ring ensures that the flue gas will not leak from the gap between the filter box 14 and the slot, ensuring the normal operation of the entire waste heat utilization process. A sealing door 22 is hinged to the bottom surface of the water supply tank 4 at the insertion point of the filter box 14 and the slot. When it is necessary to clean the filter box 14, replace the filter components, or check its internal condition, the sealing door 22 can be opened to directly contact the filter box 14. After the maintenance work is completed, the sealing door 22 can be closed to restore the seal and ensure the normal operation of the equipment. The sealing ring and the sealing door 22 work together to ensure the seal between the filter box 14 and the slot.

[0035] The filter box 14 is provided with a mesh plate 15 on its surface, and a first filter plate 16 and a second filter plate 23 for filtering waste heat flue gas are slidably connected inside the filter box 14. Over time, a large number of impurities will accumulate on the first filter plate 16 and the second filter plate 23, affecting the filtration effect and heat exchange efficiency of the waste heat flue gas. Therefore, when cleaning the filter box 14 regularly, the filter box 14 is pulled out from the heating chamber 6, and then the first filter plate 16 and the second filter plate 23 are slid out of the filter box 14. The first filter plate 16, the second filter plate 23 and the mesh plate 15 on the filter box 14 are cleaned or replaced to ensure that the filtration of the flue gas is always in good working condition. The filter materials of the first filter plate 16 and the second filter plate 23 are porous ceramic material and ceramic fiber, respectively. Ceramic fiber can withstand high temperatures above 1000℃ and has a certain filtration accuracy, which can effectively intercept particulate impurities in the flue gas. The porous ceramic material has a large number of uniformly distributed micropores, which can accurately filter tiny particles in high-temperature flue gas.

[0036] The water supply tank 4, the first water supply pipe 8, and the second water supply pipe 9 are all equipped with heat insulation pads 17. The heat insulation pads 17 are made of polyurethane foam material with low thermal conductivity, which can effectively prevent heat conduction and keep the water at a high temperature during storage and transportation. This reduces the energy consumption required by the boiler 1 to maintain the water temperature, improves energy utilization efficiency, and thus reduces operating costs. A water supply pipe 18 is provided on one side of the water supply tank 4. The water supply pipe 18 can be connected to an external water source to replenish the water in the water supply tank 4 and maintain a stable water level in the water supply tank 4. A flue pipe 19 is provided on one side of the heating chamber 6. The flue pipe 19 is used to discharge the flue gas whose temperature has decreased after heat exchange. After the high-temperature flue gas exchanges heat with the water in the heating chamber 6, it still contains a certain amount of heat and exhaust gas produced by combustion. The flue pipe 19 can guide this flue gas to the outside or into the subsequent flue gas treatment equipment.

[0037] The surface of the combustion chamber 2 is hinged with an inspection door 20, which provides operators with a convenient way to check the combustion status. During the operation of the boiler 1, the operators can periodically open the inspection door 20 to check the internal condition of the combustion chamber 2. The boiler 1 is provided with several manholes 21, which allow maintenance personnel to easily enter the boiler 1 to carry out comprehensive maintenance and cleaning work.

[0038] In this dual-circuit vertical steam boiler, fuel (such as natural gas, coal, or oil) is thoroughly mixed with a suitable amount of air and ignited in combustion chamber 2. This process releases a large amount of heat energy, causing the temperature of combustion chamber 2 to rise rapidly, forming a high-temperature flame and high-temperature flue gas. This high-temperature energy converts the water in boiler 1 into steam, providing power for the entire boiler system. Meanwhile, water in water supply tank 4 is powered by water pump 10 and transported through water pipe 11 to the first water supply pipe 8 and the second water supply pipe 9, which are interconnected. All of them are connected to boiler 1, forming a dual-circuit water supply system. During normal operation, the water supply of the two circuits can be flexibly controlled by solenoid valve 12 according to actual needs. When the steam demand is small, only one water supply pipeline can be opened to supply water; when the steam demand is large or water needs to be replenished quickly, both water supply pipelines are opened at the same time. Solenoid valve 12 on the water supply pipeline plays a key control role. By controlling the opening of solenoid valve 12, the water flow can be precisely adjusted, so that the water in water tank 4 can be transported into boiler 1 for heating through the dual-circuit water supply pipeline.

[0039] The high-temperature flue gas generated in combustion chamber 2 contains a large amount of waste heat. A portion of the high-temperature flue gas is drawn into the heating chamber 6 at the bottom of water supply tank 4 by the induced draft fan in waste heat pipe 7. At the connection between waste heat pipe 7 and heating chamber 6, there is a filter box 14. The first filter plate 16 in filter box 14 initially filters larger particulate impurities in the flue gas, and the second filter plate 23 further filters smaller particles to prevent these impurities from entering the heating chamber 6. The filtered waste heat flue gas comes into full contact with the heat conduction plate 5 in the heating chamber 6 and transfers heat to the water in water supply tank 4 through heat conduction. The water absorbs heat and its temperature rises, realizing the preheating process. The preheated water can then enter the boiler 1 through the dual-loop water supply pipe. Because its initial temperature is high, the energy required to heat to boiling and convert into steam in the boiler 1 is reduced, thereby reducing fuel consumption.

[0040] As water enters boiler 1, it absorbs heat from combustion chamber 2, intensifying the thermal motion of water molecules. With continuous heat absorption, the water temperature gradually rises. When it reaches the boiling point at the corresponding pressure, the water begins to boil and vaporize into steam. The steam accumulates in the upper space of boiler 1. As the amount of steam increases, the pressure inside boiler 1 gradually rises. When the pressure reaches the set value, the steam is delivered to various steam-using equipment through the steam output pipe at the top of boiler 1. During the steam output process, operators can control the steam output and pressure by adjusting the water supply and controlling the combustion intensity in combustion chamber 2 according to the actual needs of the steam-using equipment. For example, if the steam-using equipment requires higher pressure steam, the fuel supply can be appropriately increased to enhance the combustion intensity, while the water supply can be increased to ensure that enough water is converted into steam to meet the pressure requirements.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A dual-circuit vertical steam boiler, characterized in that, include: Boiler (1), wherein the bottom of the boiler (1) is provided with a combustion chamber (2) and the surface of the combustion chamber (2) is connected with a number of support legs (3); Water supply tank (4), the water supply tank (4) is located on one side of the boiler (1) and the bottom of the water supply tank (4) is separated by a heat conduction plate (5) to form a heating chamber (6). The combustion chamber (2) is connected to the heating chamber (6) on one side through a waste heat pipe (7). The loop water supply pipe is located at the top of the water supply tank (4) and is used to supply water to the boiler (1). The loop water supply pipe includes a first water supply pipe (8) and a second water supply pipe (9). The first water supply pipe (8) and the second water supply pipe (9) are interconnected. The connection point on one side of the first water supply pipe (8) and the second water supply pipe (9) is connected to the boiler (1) through a connecting pipe.

2. A dual-circuit vertical steam boiler according to claim 1, characterized in that: The water supply tank (4) is equipped with a water pump (10), and the connection point on the other side of the first water supply pipe (8) and the second water supply pipe (9) is connected to the outlet of the water pump (10) through the water pipe (11).

3. A dual-circuit vertical steam boiler according to claim 1, characterized in that: Solenoid valves (12) are provided on both the first water supply pipe (8) and the second water supply pipe (9).

4. A dual-circuit vertical steam boiler according to claim 1, characterized in that: The first water supply pipe (8) and the second water supply pipe (9) are also equipped with thermometers (13).

5. A dual-circuit vertical steam boiler according to claim 1, characterized in that: A filter box (14) is provided at the connection between the waste heat pipe (7) and the heating chamber (6), and the filter box (14) is slidably inserted into a slot provided in the heating chamber (6).

6. A vertical steam boiler with dual-circuit water supply according to claim 5, characterized in that: The filter box (14) has a mesh plate (15) on its surface and a first filter plate (16) and a second filter plate (23) for filtering waste heat flue gas are slidably connected inside the filter box (14).

7. A dual-circuit vertical steam boiler according to claim 1, characterized in that: The water supply tank (4), the first water supply pipe (8), and the second water supply pipe (9) are all equipped with heat insulation pads (17). A water supply pipe (18) is provided on one side of the water supply tank (4), and a smoke exhaust pipe (19) is provided on one side of the heating chamber (6).

8. A dual-circuit vertical steam boiler according to claim 1, characterized in that: The combustion chamber (2) has an inspection door (20) hinged to its surface, and the boiler (1) has several manholes (21).

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