Industrial boiler water circulation assembly

Abstract

The utility model relates to the technical field of boilers, in particular to an industrial boiler water circulation assembly which comprises an industrial boiler body, a preheating water tank and a heat storage water tank, a boiler water inlet port and a boiler smoke outlet port are formed in the industrial boiler body, a heat exchange piece is arranged in the preheating water tank, and a cold water input pipe is arranged on the right side of the preheating water tank. A circulating water injection pipe is arranged on the rear side of the preheating water tank, a preheating water inlet pipe is arranged on the right side of the heat storage water tank and communicated with the preheating water outlet pipe through a water guide pipe, and a circulating water outlet pipe and a first pump body are arranged at the bottom of the rear side of the heat storage water tank. The input end of the first pump body communicates with the circulating water outlet pipe through a first water pumping pipe, and the output end of the first pump body communicates with the circulating water injection pipe through a first water supply pipe. According to the industrial boiler water circulation assembly, the first pump body conveys water in the heat storage water tank into the preheating water tank for cyclic heating, and the water preheating effect and efficiency are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to a water circulation component for an industrial boiler. Background Technique

[0002] An industrial boiler is a device that uses the heat energy generated by fuel combustion to heat water into hot water or steam. It is widely used in multiple fields such as factories, power plants, and heating systems. The main function of an industrial boiler is to provide a stable heat energy supply to meet the needs of production and life. Its working principle is to burn fuels such as coal, oil, and natural gas to generate high temperature, heat water into hot water or steam, and then transport it to each heat-using device through pipelines.

[0003] The patent with the publication number of CN209639250U discloses a boiler water circulation device, including a boiler main body. Both ends of the bottom of the boiler main body are bolted with two vertically arranged main support columns, and the bottoms of the two vertically arranged main support columns are bolted with a horizontally arranged fixed base. A first hole is opened on one side of the boiler main body, and a horizontally arranged water outlet pipe is sleeved on the circumferential inner wall of the first hole. In the middle of the inner wall of the top of the boiler main body of the boiler water circulation device in the utility model, a vertically arranged combustion chamber is bolted. In the utility model, a vertical combustion chamber is arranged in the middle of the boiler main body of the boiler water circulation device, and a heating pipe is sleeved on the circumferential outer wall of the combustion chamber, so that the heating pipe has a larger heating area, higher heating efficiency, and the heated water can enter the interior of the boiler main body to preheat the cold water entering the heating pipe, further improving the heating efficiency of the water.

[0004] In the above-mentioned prior art, a heating pipe is sleeved on the circumferential outer wall of the combustion chamber, so that the heating pipe has a larger heating area, and the heated water can preheat the cold water entering the heating pipe after entering the interior of the boiler main body. However, this technical solution has limitations in practical applications, mainly manifested in that the heat of the heated water is consumed during the preheating process, the preheating effect is not ideal, and an effective water circulation heating mechanism is not formed. More importantly, this device fails to make full use of the high-temperature flue gas discharged from the exhaust hood and fails to achieve efficient recovery of waste heat. In view of this, we propose a water circulation component for an industrial boiler. Content of the Utility Model

[0005] The purpose of the utility model is to provide a water circulation component for an industrial boiler to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] An industrial boiler water circulation component, including an industrial boiler body, on which a boiler water inlet port and a boiler flue gas outlet port are provided. The boiler water inlet port is used to inject heated water into the industrial boiler body, and the boiler flue gas outlet port is used to output the high-temperature flue gas generated by fuel combustion in the industrial boiler body;

[0008] It also includes a preheating water tank and a hot water storage tank. The preheating water tank is located at the top of the hot water storage tank. A heat exchange component is provided in the preheating water tank. The heat exchange component includes a flue gas dispersion box body and a flue gas collection box body. The flue gas dispersion box body is used to disperse the incoming flue gas, and the flue gas collection box body is used to collect the flue gas after heat exchange. A plurality of heat exchange tubes arranged in a matrix are provided between the flue gas dispersion box body and the flue gas collection box body. A flue gas input pipe is provided on the left side of the flue gas dispersion box body. The input end of the flue gas input pipe passes through the left side inner wall of the preheating water tank and is connected to the boiler flue gas outlet port through a guide pipe. A flue gas output pipe is provided on the right side of the flue gas collection box body. The output end of the flue gas output pipe passes through the right side inner wall of the preheating water tank to the outside. The boiler flue gas outlet port introduces the high-temperature flue gas into the flue gas input pipe through the guide pipe. The high-temperature flue gas enters the flue gas dispersion box body from the flue gas input pipe, and then enters a plurality of heat exchange tubes respectively from the flue gas dispersion box body. The heat in the heat exchange tubes exchanges heat with the water in the preheating water tank, thereby realizing the preheating treatment of the water. The flue gas after heat exchange enters the flue gas collection box body from the heat exchange tubes and is then output from the flue gas output pipe. The flue gas output pipe is connected to the boiler flue gas treatment equipment to avoid air pollution caused by direct flue gas discharge;

[0009] A cold water input pipe is provided at a position near the top on the right side of the preheating water tank for inputting cold water into the preheating water tank. A preheated water outlet pipe is provided at the bottom on the right side of the preheating water tank. A circulating injection pipe is provided at a position near the top on the rear side of the preheating water tank. A preheated water inlet pipe is provided at a position near the top on the right side of the hot water storage tank. The preheated water inlet pipe is connected to the preheated water outlet pipe through a guide pipe. The water in the preheating water tank sequentially passes through the preheated water outlet pipe, the guide pipe and the preheated water inlet pipe into the hot water storage tank;

[0010] A circulating water outlet pipe and a first pump body are provided at the bottom on the rear side of the hot water storage tank. The input end of the first pump body is connected to the circulating water outlet pipe through a first suction pipe, and the output end of the first pump body is connected to the circulating injection pipe through a first delivery pipe. The first pump body works with an external power supply. Under the action of the first pump body, the water in the hot water storage tank is transported into the preheating water tank for circulating heating, improving the preheating effect and efficiency of the water;

[0011] A hot water output pipe is provided at the bottom on the left side of the hot water storage tank. The output end of the hot water output pipe is connected to a second pump body. The input end of the second pump body is communicated with the hot water output pipe through a second water suction pipe. The output end of the second pump body is communicated with the boiler water inlet port through a second water delivery pipe. The second pump body is externally powered. Under the action of the second pump body, the preheated water in the hot water storage tank is transported into the industrial boiler body.

[0012] Preferably, a solenoid valve is provided on the cold water input pipe to control the switch of the cold water input pipe. A water level sensor is provided at the position near the top on the rear side of the inner wall of the preheated water tank. A controller is provided on the front side of the preheated water tank. The water level sensor and the solenoid valve are electrically connected to the controller through wires respectively. The controller is used to receive the electrical signal of the water level sensor and control the switch of the solenoid valve, so as to automatically replenish water to the preheated water tank and avoid the situation of water shortage in the preheated water tank.

[0013] Preferably, the flue gas dispersion box body is close to the left side of the inner wall of the preheated water tank, and the flue gas collection box body is close to the right side of the inner wall of the preheated water tank, so that the heat exchange tube has sufficient length and improves the heat exchange effect of the heat exchange tube.

[0014] Preferably, the left end of the heat exchange tube is communicated with the flue gas dispersion box body, and the right end of the heat exchange tube is communicated with the flue gas collection box body. The flue gas dispersion box body and the flue gas collection box body are communicated through the heat exchange tube, so that the flue gas can smoothly pass through the heat exchange element.

[0015] Preferably, the uppermost heat exchange tube is located below the water level sensor to ensure that multiple heat exchange tubes can all perform heat exchange operations with water.

[0016] Preferably, a temperature controller is provided on the front side of the hot water storage tank. The temperature sensing probe of the temperature controller is located inside the hot water storage tank. The first pump body is electrically connected to the temperature controller through a wire. The temperature controller is used to detect the water temperature in the hot water storage tank and control the operation of the first pump body. When the water temperature in the hot water storage tank reaches the set threshold, the first pump body stops working, and there is no need to continuously circulate and heat the water, saving energy consumption.

[0017] Compared with the prior art, the beneficial effects of the present utility model are:

[0018] 1. For this industrial boiler water circulation component, the heat in the heat exchange tube exchanges heat with the water in the preheated water tank, thereby realizing the preheating treatment of the water. Under the action of the first pump body, the water in the hot water storage tank is transported into the preheated water tank for circulating heating, improving the preheating effect and efficiency of the water.

[0019] 2. For this industrial boiler water circulation component, multiple heat exchange tubes between the flue gas dispersion box body and the flue gas collection box body are used for heat exchange, so that the heat of the high-temperature flue gas can be more efficiently transferred to the water in the preheated water tank, thereby significantly improving the preheating efficiency of the water.

[0020] 3. The industrial boiler water circulation component is equipped with a water level sensor and a solenoid valve in the preheating water tank, which can automatically detect the water level and control the switch of the cold water input pipe, so as to ensure that the water level in the preheating water tank is maintained within a suitable range and avoid system operation problems caused by water shortage.

[0021] 4. The industrial boiler water circulation component is equipped with a thermostat in the hot water storage tank, which can detect the water temperature and control the operation of the first pump body. When the water temperature reaches the set threshold, the first pump body stops working, avoiding unnecessary circulating heating, thus saving energy consumption and improving the energy utilization efficiency of the overall system. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural diagram of the overall first perspective of the present utility model;

[0023] Figure 2 is a schematic structural diagram of the overall second perspective of the present utility model;

[0024] Figure 3 is a schematic cross-sectional structural diagram of the preheating water tank and the hot water storage tank in the present utility model;

[0025] Figure 4 is a schematic cross-sectional structural diagram of the heat exchange component in the present utility model;

[0026] In the figure: 1. Industrial boiler body; 10. Boiler water inlet port; 11. Boiler flue gas outlet port; 2. Preheating water tank; 20. Cold water input pipe; 21. Preheated water outlet pipe; 22. Circulation injection pipe; 3. Hot water storage tank; 30. Preheated water inlet pipe; 31. Hot water output pipe; 32. Circulation outlet pipe; 4. Heat exchange component; 40. Flue gas dispersion box body; 41. Flue gas collection box body; 42. Heat exchange pipe; 43. Flue gas input pipe; 44. Flue gas output pipe; 5. First pump body; 50. First water suction pipe; 51. First water delivery pipe; 6. Water level sensor; 7. Solenoid valve; 8. Controller; 9. Second pump body; 90. Second water suction pipe; 91. Second water delivery pipe; 12. Thermostat; 13. Water guide pipe; 14. Gas guide pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0029] Please refer to Figures 1-4 , the present utility model provides a technical solution:

[0030] An industrial boiler water circulation component, including an industrial boiler body 1, on which a boiler water inlet port 10 and a boiler flue gas outlet port 11 are provided. The boiler water inlet port 10 is used to inject heated water into the industrial boiler body 1, and the boiler flue gas outlet port 11 is used to output the high-temperature flue gas generated by the fuel combustion in the industrial boiler body 1;

[0031] It further includes a preheating water tank 2 and a hot water storage tank 3. The preheating water tank 2 is located at the top of the hot water storage tank 3. A heat exchange member 4 is provided in the preheating water tank 2. The heat exchange member 4 includes a flue gas dispersion box body 40 and a flue gas collection box body 41. The flue gas dispersion box body 40 is used to disperse the incoming flue gas, and the flue gas collection box body 41 is used to collect the flue gas after heat exchange. A plurality of heat exchange tubes 42 arranged in a matrix are provided between the flue gas dispersion box body 40 and the flue gas collection box body 41. A flue gas input pipe 43 is provided on the left side of the flue gas dispersion box body 40. The input end of the flue gas input pipe 43 passes through the left side inner wall of the preheating water tank 2 and is connected to the boiler flue gas outlet port 11 through a guide pipe 14. A flue gas output pipe 44 is provided on the right side of the flue gas collection box body 41. The output end of the flue gas output pipe 44 passes through the right side inner wall of the preheating water tank 2 to the outside. The boiler flue gas outlet port 11 introduces the high-temperature flue gas into the flue gas input pipe 43 through the guide pipe 14. The high-temperature flue gas enters the flue gas dispersion box body 40 from the flue gas input pipe 43, and then enters the plurality of heat exchange tubes 42 respectively from the flue gas dispersion box body 40. The heat in the heat exchange tubes 42 exchanges heat with the water in the preheating water tank 2, thereby realizing the preheating treatment of the water. The flue gas after heat exchange enters the flue gas collection box body 41 from the heat exchange tubes 42, and then is output from the flue gas output pipe 44. The flue gas output pipe 44 is connected to the boiler flue gas treatment equipment to avoid air pollution caused by direct discharge of flue gas;

[0032] On the right side of the preheating water tank 2 and near the top, there is a cold water input pipe 20 for inputting cold water into the preheating water tank 2. At the bottom on the right side of the preheating water tank 2, there is a preheating water outlet pipe 21. On the rear side of the preheating water tank 2 and near the top, there is a circulating water injection pipe 22. On the right side of the hot water storage tank 3 and near the top, there is a preheating water inlet pipe 30. The preheating water inlet pipe 30 is communicated with the preheating water outlet pipe 21 through a water guide pipe 13. The water in the preheating water tank 2 passes through the preheating water outlet pipe 21, the water guide pipe 13 and the preheating water inlet pipe 30 in sequence and enters the hot water storage tank 3;

[0033] At the bottom on the rear side of the hot water storage tank 3, there is a circulating water outlet pipe 32 and a first pump body 5. The input end of the first pump body 5 is communicated with the circulating water outlet pipe 32 through a first water suction pipe 50. The output end of the first pump body 5 is communicated with the circulating water injection pipe 22 through a first water delivery pipe 51. The first pump body 5 is externally powered to work. Under the action of the first pump body 5, the water in the hot water storage tank 3 is transported into the preheating water tank 2 for circulating heating, improving the preheating effect and efficiency of the water;

[0034] At the bottom on the left side of the hot water storage tank 3, there is a hot water output pipe 31. The output end of the hot water output pipe 31 is connected with a second pump body 9. The input end of the second pump body 9 is communicated with the hot water output pipe 31 through a second water suction pipe 90. The output end of the second pump body 9 is communicated with the boiler water inlet port 10 through a second water delivery pipe 91. The second pump body 9 is externally powered to work. Under the action of the second pump body 9, the preheated water in the hot water storage tank 3 is transported into the industrial boiler body 1.

[0035] In this embodiment, an electromagnetic valve 7 is provided on the cold water input pipe 20 to control the switch of the cold water input pipe 20. A water level sensor 6 is provided on the rear side of the inner wall of the preheating water tank 2 and near the top. A controller 8 is provided on the front side of the preheating water tank 2. The water level sensor 6 and the electromagnetic valve 7 are electrically connected to the controller 8 through wires respectively. The controller 8 is used to receive the electrical signal of the water level sensor 6 and control the switch of the electromagnetic valve 7, so as to automatically replenish water to the preheating water tank 2 and avoid the situation of water shortage in the preheating water tank 2.

[0036] Specifically, the flue gas dispersion box body 40 is close to the left side of the inner wall of the preheating water tank 2, and the flue gas collection box body 41 is close to the right side of the inner wall of the preheating water tank 2, so that the heat exchange tube 42 has sufficient length and improves the heat exchange effect of the heat exchange tube 42.

[0037] Further, the left end of the heat exchange tube 42 is communicated with the flue gas dispersion box body 40, and the right end of the heat exchange tube 42 is communicated with the flue gas collection box body 41. The flue gas dispersion box body 40 and the flue gas collection box body 41 are communicated through the heat exchange tube 42, so that the flue gas can smoothly pass through the heat exchange member 4.

[0038] Further, the uppermost heat exchange tube 42 is located below the water level sensor 6 to ensure that all the heat exchange tubes 42 can perform heat exchange operations with water.

[0039] Further, a thermostat 12 is provided on the front side of the hot water storage tank 3. The temperature sensing probe of the thermostat 12 is located inside the hot water storage tank 3. The first pump body 5 is electrically connected to the thermostat 12 through a wire. The thermostat 12 is used to detect the water temperature in the hot water storage tank 3 and control the operation of the first pump body 5. When the water temperature in the hot water storage tank 3 reaches the set threshold, the first pump body 5 stops working, and there is no need to continuously circulate and heat the water, saving energy consumption.

[0040] When the industrial boiler water circulation component of this embodiment is in use, the solenoid valve 7 is opened through the controller 8 to allow cold water to enter the preheating water tank 2 through the cold water input pipe 20. The water level sensor 6 in the preheating water tank 2 will detect the water level. When the water level reaches the water level sensor 6, the controller 8 will close the solenoid valve 7 to stop water injection. After starting the industrial boiler body 1 and igniting and burning fuels such as coal, oil or natural gas to generate high-temperature flue gas, these flue gases enter the flue gas input pipe 43 through the boiler flue gas outlet 11 and the gas guide pipe 14, and then enter the flue gas dispersion box body 40 in the preheating water tank 2. The high-temperature flue gas is dispersed in the flue gas dispersion box body 40 and exchanges heat with the water in the preheating water tank 2 through a plurality of heat exchange pipes 42 to heat up the water. The heat-exchanged flue gas enters the flue gas collection box body 41 through the flue gas output pipe 44 and is finally discharged to the external flue gas treatment equipment to avoid air pollution caused by direct discharge. The preheated water flows out from the preheating water outlet pipe 21 at the bottom of the preheating water tank 2 and enters the preheating water inlet pipe 30 of the hot water storage tank 3 through the water guide pipe 13 and is stored in the hot water storage tank 3. The first pump body 5 is started, and water is pumped from the circulating water outlet pipe 32 at the bottom of the hot water storage tank 3 through the first water suction pipe 50, and the water is sent back to the circulating water injection pipe 22 of the preheating water tank 2 through the first water supply pipe 51 to realize the circulating heating of water, further improving the preheating effect and efficiency. When the water in the hot water storage tank 3 reaches the preset temperature, the thermostat 12 detects the temperature signal and controls the first pump body 5 to stop working to prevent overheating. At this time, the second pump body 9 can be started to pump hot water from the hot water output pipe 31 at the left bottom of the hot water storage tank 3 through the second water suction pipe 90 and send the hot water to the boiler water inlet port 10 through the second water supply pipe 91 to inject preheated water into the industrial boiler body 1, reducing the energy consumption of the industrial boiler body 1 and providing a stable supply of hot water or steam. The water level sensor 6 monitors the water level in the preheating water tank 2 in real time to ensure that the water level is within the normal range. When the water level is lower than the water level sensor 6, the solenoid valve 7 is automatically opened to supplement cold water to ensure the normal operation of the system. Through these steps, the user can operate the industrial boiler water circulation component efficiently and safely, ensuring that the system provides a stable heat energy supply to meet the needs of industrial production and life.

[0041] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments, and the above embodiments and the descriptions in the specification are only preferred examples of the present utility model, which are not used to limit the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. An industrial boiler water circulation component, comprising an industrial boiler body (1), wherein a boiler water inlet port (10) and a boiler flue gas outlet port (11) are arranged on the industrial boiler body (1), and it is characterized in that: It also includes a preheating water tank (2) and a hot water storage tank (3). The preheating water tank (2) is located at the top of the hot water storage tank (3). A heat exchange member (4) is provided in the preheating water tank (2). The heat exchange member (4) includes a flue gas dispersion box body (40) and a flue gas collection box body (41). A plurality of heat exchange tubes (42) arranged in a matrix are provided between the flue gas dispersion box body (40) and the flue gas collection box body (41). A flue gas input pipe (43) is provided on the left side of the flue gas dispersion box body (40). The input end of the flue gas input pipe (43) passes through the left side inner wall of the preheating water tank (2) and is communicated with the boiler flue gas outlet port (11) through a gas guide pipe (14). A flue gas output pipe (44) is provided on the right side of the flue gas collection box body (41). The output end of the flue gas output pipe (44) passes through the right side inner wall of the preheating water tank (2) to the outside. A cold water input pipe (20) is provided at a position near the top on the right side of the preheating water tank (2). A preheated water outlet pipe (21) is provided at the bottom on the right side of the preheating water tank (2). A circulating water injection pipe (22) is provided at a position near the top on the rear side of the preheating water tank (2). A preheating water inlet pipe (30) is provided at a position near the top on the right side of the hot water storage tank (3). The preheating water inlet pipe (30) is communicated with the preheated water outlet pipe (21) through a gas guide pipe (13). A circulating water outlet pipe (32) and a first pump body (5) are provided at the bottom on the rear side of the hot water storage tank (3). The input end of the first pump body (5) is communicated with the circulating water outlet pipe (32) through a first water suction pipe (50). The output end of the first pump body (5) is communicated with the circulating water injection pipe (22) through a first water delivery pipe (51). A hot water output pipe (31) is provided at the bottom on the left side of the hot water storage tank (3). The output end of the hot water output pipe (31) is connected with a second pump body (9). The input end of the second pump body (9) is communicated with the hot water output pipe (31) through a second water suction pipe (90). The output end of the second pump body (9) is communicated with the boiler water inlet port (10) through a second water delivery pipe (91).

2. The industrial boiler water circulation assembly according to claim 1, characterized in that: An electromagnetic valve (7) is provided on the cold water input pipe (20). A water level sensor (6) is provided at a position near the top on the rear side inner wall of the preheating water tank (2). A controller (8) is provided on the front side of the preheating water tank (2). The water level sensor (6) and the electromagnetic valve (7) are electrically connected to the controller (8) through wires respectively.

3. The industrial boiler water circulation component according to claim 1, characterized in that: The flue gas dispersion box body (40) is close to the left side inner wall of the preheating water tank (2), and the flue gas collection box body (41) is close to the right side inner wall of the preheating water tank (2).

4. The industrial boiler water circulation component according to claim 1, characterized in that: The left end of the heat exchange tube (42) is communicated with the flue gas dispersion box body (40), and the right end of the heat exchange tube (42) is communicated with the flue gas collection box body (41).

5. The industrial boiler water circulation component according to claim 1, wherein: The uppermost heat exchange tube (42) is located below the water level sensor (6).

6. The industrial boiler water circulation component according to claim 1, characterized in that: A temperature controller (12) is provided on the front side of the hot water storage tank (3). The temperature sensing probe of the temperature controller (12) is located inside the hot water storage tank (3). The first pump body (5) is electrically connected to the temperature controller (12) through a wire.

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