Novel natural gas boiler

Abstract

This invention belongs to the field of boiler technology, and particularly relates to a novel natural gas boiler, comprising a boiler body, a burner, a boiler cleaning device, a heat recovery device, a first flue gas pipe assembly, a second flue gas pipe assembly, and a feedwater device. The boiler body contains a furnace chamber, one end of which is connected to the burner, and the other end has an installation port. The first flue gas pipe assembly communicates with the furnace chamber. The second flue gas pipe assembly is located at the bottom of the first flue gas pipe assembly, and the second flue gas pipe assembly is connected to the first flue gas pipe assembly via a flue gas communication hood. The end of the second flue gas pipe assembly away from the flue gas communication hood has an outlet pipe, which is connected to the heat recovery device. The heat recovery device is located at the top of the boiler body. The boiler cleaning device is detachably installed on the boiler body through the installation port, and one end of the boiler cleaning device extends into the furnace chamber for cleaning the inner wall of the furnace chamber. Natural gas boilers have high combustion efficiency, good water heating effect, and the existing cleaning method results in high cleaning efficiency for natural gas boilers.

Description

Technical Field

[0001] This invention belongs to the field of boiler technology, and in particular relates to a novel natural gas boiler. Background Technology

[0002] A natural gas boiler is a type of gas-fired steam boiler. It is a heat energy conversion device that uses natural gas as fuel to heat water in the boiler by burning it in the furnace, causing it to vaporize into steam. The water in the boiler is continuously heated by the energy released from the combustion of the gaseous fuel in the furnace, raising its temperature and generating pressurized steam. The expansion of the steam inside is restricted, generating pressure and forming thermal power.

[0003] Existing natural gas boilers have low combustion efficiency and poor water heating effect. Cleaning the boiler interior manually using existing cleaning devices has technical problems such as low cleaning efficiency. Furthermore, the inability to detect the gas inside the boiler can easily lead to incomplete combustion of the gas. Summary of the Invention

[0004] The purpose of this invention is to provide a new type of natural gas boiler, which aims to solve the technical problems of low combustion efficiency, poor water heating effect, and low cleaning efficiency of existing natural gas boilers.

[0005] To achieve the above objectives, this invention provides a novel natural gas boiler, comprising a boiler body, a burner, a boiler cleaning device, a heat recovery device, a first flue gas return pipe assembly, a second flue gas return pipe assembly, and a water supply device. The water supply device is connected to the outside of the boiler body for introducing water into the boiler body. The boiler body contains a furnace chamber, one end of which is connected to the burner, and the other end has an installation port. The first flue gas return pipe assembly is horizontally positioned beside the furnace chamber and communicates with it. The second flue gas return pipe assembly is located at the bottom of the first flue gas return pipe assembly, and the second flue gas return pipe assembly is connected to the first flue gas return pipe assembly via a flue gas communication hood, which is located beside the burner. The end of the second flue gas return pipe assembly away from the flue gas communication hood has an outlet pipe, which is connected to the heat recovery device. The heat recovery device is located at the top of the boiler body. The boiler cleaning device is detachably installed on the boiler body through the installation port, and one end of the boiler cleaning device extends into the furnace chamber for cleaning the inner wall of the furnace chamber.

[0006] Optionally, the boiler cleaning device includes a moving block, a driving mechanism, a cleaning mechanism, a lead screw, an installation mechanism, and a rotating block; the installation mechanism is installed on the installation port, the rotating block is rotatably connected to the installation mechanism and located outside the boiler body; the lead screw is fixedly connected to the rotating block, and one end of the lead screw extends horizontally into the furnace chamber; the moving block is disposed inside the furnace chamber and threadedly connected to the lead screw; the driving mechanism is fixedly disposed on the moving block, and the moving end of the driving mechanism is perpendicular to the lead screw and arranged in a direction away from the lead screw; the cleaning mechanism is disposed at the moving end of the driving mechanism and is used to clean the inside of the furnace chamber.

[0007] Optionally, the cleaning mechanism includes a fixed plate, a cleaning brush, and an elastic element; the fixed plate is connected to the moving end of the driving mechanism; one end of the elastic element is connected to the fixed plate, and the other end is fixedly connected to the cleaning brush; the cleaning brush is located on the side of the fixed plate away from the driving mechanism.

[0008] Optionally, the cleaning mechanism further includes two spaced-apart slide rods; one end of each slide rod is fixedly connected to the cleaning brush, and the other end of each slide rod passes through the fixing plate and is slidably connected to the fixing plate.

[0009] Optionally, the elastic element is a plurality of springs, each of which is spaced apart on the fixed plate.

[0010] Optionally, the installation mechanism includes an installation part and two semi-circular fixing rings adapted to the installation port, and both semi-circular fixing rings are slidably connected to the installation part, and the installation part is rotatably connected to the rotating block; a connecting rod is slidably connected between the bottoms of the two semi-circular fixing rings, and the two ends of the connecting rod are provided with limiting parts; a fixing part is provided at the top of each of the two semi-circular fixing rings, and a coaxial locking hole is provided on each of the two fixing parts.

[0011] Optionally, the mounting part is provided with a sliding hole, and the semi-circular fixing ring is provided with a limiting rod, which extends into the sliding hole and can slide within the sliding hole.

[0012] Optionally, the novel natural gas boiler further includes a combustion-supporting control system, which includes a controller, a hydrogen-oxygen generator, a natural gas storage tank, a first flow valve, a second flow valve, a third flow valve, a first sensor, a second sensor, and a third sensor. The hydrogen-oxygen generator is connected to both an oxygen storage tank and a hydrogen storage tank. The oxygen storage tank is connected to the furnace chamber via a pipeline, and the first flow valve is located on the pipeline connecting the oxygen storage tank and the furnace chamber. The hydrogen storage tank is connected to the furnace chamber via a pipeline, and the second flow valve is located on the pipeline connecting the hydrogen storage tank and the furnace chamber. The natural gas storage tank is connected to the furnace chamber via a pipeline, and the third flow valve is located on the pipeline connecting the natural gas storage tank and the furnace chamber. The first, second, and third sensors are all located inside the furnace chamber and are used to detect the oxygen content, hydrogen content, and natural gas content, respectively. The first, second, and third flow valves, the first, second, and third sensors are all signal-connected to the controller.

[0013] Optionally, the first flow valve, the second flow valve, and the third flow valve are all pneumatic regulating valves.

[0014] Optionally, the heat recovery device includes a condenser and an energy saver, one end of which is connected to the flue outlet pipe of the flue pipe, and the other end is connected to the condenser pipe.

[0015] The novel natural gas boiler provided in this invention has at least one of the following technical effects: In this invention, the feedwater device is connected to the interior of the boiler body via a pipe and is used to introduce cold water into the boiler body; the furnace, the first return flue pipe group, and the second return flue pipe group are all horizontally arranged, and both ends of the furnace, the first return flue pipe group, and the second return flue pipe group extend to both ends of the boiler body; the installation port is located on the outside of the boiler body and communicates with the interior of the furnace; the furnace has an opening on the side near the installation port, which communicates with the first return flue pipe group; a flue gas connecting hood is fixedly installed outside the boiler body, serving to guide exhaust gas from the first return flue pipe group to the second return flue pipe group, while preventing exhaust gas from escaping; the boiler cleaning device is detachably connected to the boiler body, and is removed when the boiler body is in use. When the boiler is in use, gas is simultaneously introduced into the furnace, cold water is introduced into the boiler body, and then the burner is started. Because the burner is connected to the furnace, it ignites the gas inside the furnace, generating a large amount of heat. The combustion produces exhaust gas, which forms at the end of the furnace near the installation port. This exhaust gas enters the first return flue pipe group, which is arranged vertically and horizontally and connected to the furnace. The vertical and horizontal arrangement of the first return flue pipe group increases the exhaust gas's travel distance, improving heat exchange efficiency. After passing through the first return flue pipe group, the exhaust gas enters the second return flue pipe group, which also increases the exhaust gas's travel distance, effectively improving heat exchange efficiency. After passing through the second return flue pipe group, the exhaust gas enters the heat recovery device through the exhaust pipe. The heat recovery device condenses the water vapor in the exhaust gas, thereby reducing its temperature before it is discharged, thus improving the boiler's thermal efficiency. When cleaning the inside of the furnace is required, the cleaning end of the boiler cleaning device is inserted into the furnace through the installation port, and then the boiler cleaning device is connected to the installation port. This ensures that the boiler cleaning device is stable during the cleaning process, making cleaning convenient, efficient, and thorough. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Fig. 1 A schematic diagram of the structure of a novel natural gas boiler provided in an embodiment of the present invention.

[0018] Fig. 2 This is a cross-sectional view of a novel natural gas boiler provided in an embodiment of the present invention.

[0019] Fig. 3This is a structural schematic diagram of the novel natural gas boiler provided in an embodiment of the present invention from another perspective.

[0020] Fig. 4 This is a schematic diagram of the boiler cleaning device provided in an embodiment of the present invention.

[0021] Fig. 5 This is a cross-sectional view of the boiler cleaning device provided in an embodiment of the present invention.

[0022] Fig. 6 This is a schematic diagram illustrating the working principle of the combustion-supporting control system provided in an embodiment of the present invention.

[0023] The following are the labeling elements in the figure:

[0024] 10—Boiler body; 11—Furnace chamber; 12—Installation port

[0025] 13—Flue gas connection hood; 14—Flue gas outlet pipe; 20—Burner.

[0026] 30—Boiler cleaning device; 31—Moving block; 32—Drive mechanism

[0027] 33—Cleaning mechanism; 34—Lead screw; 35—Installation mechanism

[0028] 36—Rotating block; 37—Handle; 40—Heat recovery device

[0029] 50—First flue gas pipe assembly; 60—Second flue gas pipe assembly; 70—Water supply device

[0030] 331—Fixed plate; 332—Cleaning brush; 333—Elastic element

[0031] 334—Slide rod; 351—Mounting part; 352—Semi-circular retaining ring

[0032] 353—Fixing part; 354—Connecting rod; 355—Limiting rod. Detailed Implementation

[0033] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The following description is based on the accompanying drawings. Figs. 1-6 The described embodiments are exemplary and intended to explain embodiments of the invention, and should not be construed as limiting the invention.

[0034] In the description of the embodiments of the present invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0037] In one embodiment of the present invention, such as Figs. 1-5 As shown, a novel natural gas boiler is provided, including a boiler body 10, a burner 20, a boiler cleaning device 30, a heat recovery device 40, a first flue gas return pipe assembly 50, a second flue gas return pipe assembly 60, and a water supply device 70. The water supply device 70 is connected to the outside of the boiler body 10 and is used to introduce water into the boiler body 10. A furnace chamber 11 is provided inside the boiler body 10. One end of the furnace chamber 11 is connected to the burner 20, and the other end has an installation port 12. The first flue gas return pipe assembly 50 is horizontally arranged beside the furnace chamber 11 and communicates with it. The second flue gas return pipe assembly 60 is located at the bottom of the first flue gas return pipe assembly 50, and the second flue gas return pipe assembly 60 is connected to the first flue gas return pipe assembly 50 through a flue gas communication hood 13, which is located beside the burner 20. A flue gas outlet pipe 14 is provided at the end of the second flue gas return pipe assembly 60 away from the flue gas communication hood 13, and the flue gas outlet pipe 14 is connected to the heat recovery device 40. The heat recovery device 40 is located on the top of the boiler body 10. The boiler cleaning device 30 is detachably installed on the boiler body 10 through the mounting port 12, and one end of the boiler cleaning device 30 extends into the furnace 11 for cleaning the inner wall of the furnace 11.

[0038] Specifically, in this embodiment of the novel natural gas boiler, the water supply device 70 is connected to the interior of the boiler body 10 via a pipe and is used to introduce cold water into the boiler body 10. The furnace liner 11, the first return flue pipe group 50, and the second return flue pipe group 60 are all horizontally arranged, and both ends of the furnace liner 11, both ends of the first return flue pipe group 50, and both ends of the second return flue pipe group 60 extend to both ends of the boiler body 10. The mounting port 12 is located on the outside of the boiler body 10 and communicates with the interior of the furnace liner 11. The furnace liner 11 has an opening on the side near the mounting port 12, and this opening communicates with the first return flue pipe group 50. The flue gas connecting hood 13 is fixedly installed outside the boiler body 10, serving to guide exhaust gas from the first return flue pipe group 50 into the second return flue pipe group 60, while preventing exhaust gas from escaping.

[0039] The boiler cleaning device 30 is detachably connected to the boiler body 10. When the boiler body 10 is in use, the boiler cleaning device 30 is removed. During boiler operation, gas is simultaneously introduced into the furnace 11, and cold water is introduced into the boiler body 10. Then, the burner 20 is started. Since the burner 20 is connected to the furnace 11, it ignites the gas inside the furnace 11. The combustion of the gas generates a large amount of heat energy, producing exhaust gas. This exhaust gas forms at the end of the furnace 11 near the installation port 12. The exhaust gas enters the first return flue pipe group 50, which is arranged longitudinally and horizontally and connected to the furnace 11. The longitudinal horizontal arrangement of the first return flue pipe group 50 increases the exhaust gas travel distance, improving heat exchange efficiency. After passing through the first return flue pipe group 50, the exhaust gas enters the second return flue pipe group 60. The longitudinal horizontal arrangement of the second return flue pipe group 60 also increases the exhaust gas travel distance, effectively improving heat exchange efficiency. The exhaust gas forms an S-shaped loop between the first and second return flue pipe groups 50 and 60. After passing through the second flue gas pipe group 60, the exhaust gas enters the heat recovery device 40 through the flue gas outlet pipe 14. The heat recovery device 40 condenses the water vapor in the exhaust gas, thereby reducing the temperature of the exhaust gas, and then it is discharged, thus improving the thermal efficiency of the boiler.

[0040] When it is necessary to clean the inside of the furnace 11, open the installation port 12 (the installation port 12 is closed when the boiler is in normal use). Insert the cleaning end of the boiler cleaning device 30 into the furnace 11 through the installation port 12. Then connect the boiler cleaning device 30 to the installation port 12 to ensure that the boiler cleaning device 30 is stable, easy to clean, and more efficient and clean during the cleaning process.

[0041] In another embodiment of the invention, such as Figs. 4-5As shown, the boiler cleaning device 30 includes a moving block 31, a drive mechanism 32, a cleaning mechanism 33, a lead screw 34, a mounting mechanism 35, and a rotating block 36. The mounting mechanism 35 is mounted on the mounting port 12. The rotating block 36 is rotatably connected to the mounting mechanism 35 and located outside the boiler body 10. The lead screw 34 is fixedly connected to the rotating block 36, and one end of the lead screw 34 extends horizontally into the furnace chamber 11. The moving block 31 is located inside the furnace chamber 11 and threadedly connected to the lead screw 34. The drive mechanism 32 is fixedly mounted on the moving block 31, and the moving end of the drive mechanism 32 is perpendicular to the lead screw 34 and positioned away from the lead screw 34. The cleaning mechanism 33 is located at the moving end of the drive mechanism 32 and is used to clean the interior of the furnace chamber 11.

[0042] Specifically, when installing the boiler cleaning device 30, one end of the lead screw 34, which is equipped with the moving block 31, drive mechanism 32, and cleaning mechanism 33, is inserted into the furnace chamber 11 through the installation port 12. Then, it is fixedly connected to the installation port 12 via the installation mechanism 35, ensuring the stability of the moving block 31, drive mechanism 32, and cleaning mechanism 33 during movement, with the lead screw 34 coinciding with the axis of the furnace chamber 11. A handle 37 is vertically connected to the side of the rotating block 36 facing away from the installation mechanism 35. When the operator rotates the handle 37, the rotating block 36 rotates, causing the lead screw 34 to rotate. Since the lead screw 34 is threadedly connected to the rotating block 36, the horizontal movement of the moving block 31 within the furnace chamber 11 is achieved by controlling the forward and reverse rotation of the lead screw 34. Simultaneously, during the movement of the rotating block 36, the drive mechanism 32 and cleaning mechanism 33 on the moving block 31 move together. Once the installation mechanism 35 is installed, the drive mechanism 32 is activated, driving the cleaning mechanism 33 toward the inner wall of the furnace 11, so that the cleaning mechanism 33 can clean the inner wall of the furnace 11.

[0043] Among them, the drive mechanism 32 can be a drive cylinder.

[0044] In another embodiment of the invention, such as Figs. 4-5As shown, the cleaning mechanism 33 includes a fixed plate 331, a cleaning brush 332, and an elastic element 333. The fixed plate 331 is connected to the moving end of the drive mechanism 32. One end of the elastic element 333 is connected to the fixed plate 331, and the other end is fixedly connected to the cleaning brush 332. The cleaning brush 332 is located on the side of the fixed plate 331 away from the drive mechanism 32. Specifically, when cleaning the inner wall of the furnace liner 11, the drive mechanism 32 drives the fixed plate 331 to move, and the fixed plate 331 drives the elastic element 333 and the cleaning brush 332 to move until the cleaning brush 332 contacts the inner wall of the furnace liner 11, and until the fixed plate 331 compresses the elastic element 333 to make the cleaning brush 332 tightly contact the inner wall of the furnace liner 11. This can thoroughly and effectively clean stubborn stains inside the furnace liner 11. At the same time, since the cleaning brush 332 is connected to the fixed plate 331 through the elastic element 333, the cleaning brush 332 can be finely adjusted according to the tilt angle of the inner wall of the furnace liner 11 for better cleaning of the inner wall of the furnace liner 11.

[0045] In another embodiment of the invention, such as Fig. 5 As shown, the cleaning mechanism 33 also includes two spaced-apart slide rods 334. One end of each slide rod 334 is fixedly connected to the cleaning brush 332, and the other end passes through the fixing plate 331 and is slidably connected to the fixing plate 331. Specifically, during the process of the driving mechanism 32 driving the fixing plate 331 to compress the elastic element 333, so that the cleaning brush 332 is in contact with the inner wall of the furnace liner 11, in order to ensure that the cleaning brush 332 is not easily dropped during cleaning, the slide rods 334 are provided. When the elastic element 333 is compressed, the slide rods 334 and the fixing plate 331 move relative to each other, and the maximum width of the hole provided on the fixing plate 331 is greater than the diameter of the slide rod 334, so that the cleaning brush 332 still maintains a certain degree of angle adjustability. Furthermore, through the limiting effect of the slide rods 334, the cleaning brush 332 is not easily dislodged during operation.

[0046] In another embodiment of the invention, such as Figs. 4-5 As shown, the elastic element 333 consists of multiple springs, each spring being spaced apart on the fixed plate 331. Specifically, the elastic element 333 consists of multiple springs, which connect the fixed plate 331 and the cleaning brush 332.

[0047] In another embodiment of the invention, such as Figs. 4-5As shown, the mounting mechanism 35 includes a mounting part 351 and two semi-circular fixing rings 352 adapted to the mounting opening 12. Both semi-circular fixing rings 352 are slidably connected to the mounting part 351, and the mounting part 351 is rotatably connected to the rotating block 36. A connecting rod 354 slides between the bottoms of the two semi-circular fixing rings 352, and limiting parts are provided at both ends of the connecting rod 354. Each of the two semi-circular fixing rings 352 has a fixing part 353 at its top, and each fixing part 353 has a coaxial locking hole. Specifically, the maximum distance between the two semi-circular fixing rings 352 on the mounting part 351 is the length of the connecting rod 354. Through the connecting rod 354, the two semi-circular fixing rings 352 can be fitted onto the mounting opening 12, and then brought closer together. A bolt is then passed through the locking holes of the two fixing parts 353 in sequence, and the bolt is tightened with a nut. In this way, the two semi-circular fixing plates 331 can be tightly fitted onto the mounting opening 12.

[0048] In another embodiment of the invention, such as Fig. 5 As shown, the mounting part 351 is provided with a sliding hole, and the semi-circular fixing ring 352 is provided with a limiting rod 355. The limiting rod 355 extends into the sliding hole and can slide within the sliding hole. Specifically, the sliding hole and the limiting rod 355 enable the semi-circular fixing ring 352 to move at an upper limit within the mounting part 351.

[0049] In another embodiment of the invention, such as Fig. 6 As shown, the new natural gas boiler also includes a combustion-supporting control system, which includes a controller, a hydrogen-oxygen generator, a natural gas storage tank, a first flow valve, a second flow valve, a third flow valve, a first sensor, a second sensor, and a third sensor. The hydrogen-oxygen generator is connected to both the oxygen and hydrogen storage tanks. The oxygen storage tank is connected to the furnace chamber 11 via a pipeline, and the first flow valve is located on the pipeline connecting the oxygen storage tank and the furnace chamber 11. The hydrogen storage tank is connected to the furnace chamber 11 via a pipeline, and the second flow valve is located on the pipeline connecting the hydrogen storage tank and the furnace chamber 11. The natural gas storage tank is connected to the furnace chamber 11 via a pipeline, and the third flow valve is located on the pipeline connecting the natural gas storage tank and the furnace chamber 11. The first, second, and third sensors are all located inside the furnace chamber 11 and are used to detect the oxygen, hydrogen, and natural gas contents, respectively. The first, second, and third flow valves, the first, second, and third sensors are all connected to the controller signal.

[0050] Specifically, the hydrogen-oxygen generator and natural gas storage tank are both located outside the boiler body 10. The hydrogen-oxygen generator electrolyzes water to produce oxygen and hydrogen, which are then introduced into the oxygen storage tank and hydrogen storage tank, respectively. Oxygen is then introduced into the furnace chamber 11 via a first flow valve, hydrogen via a second flow valve, and natural gas via a third flow valve. A first, second, and third sensor are installed inside the furnace chamber 11. The first sensor detects the oxygen content, the second sensor detects the hydrogen content, and the third sensor detects the natural gas content. When natural gas burns in the furnace chamber 11, the first, second, and third sensors transmit the detected hydrogen, oxygen, and natural gas contents to the controller. The controller can determine the appropriateness of the hydrogen, oxygen, and natural gas contents based on a preset combustion ratio and, based on the detected gas contents, make decisions to control the opening and closing of the first, second, and third flow valves. This system is safe, efficient, energy-saving, and environmentally friendly.

[0051] In another embodiment of the invention, such as Figs. 1-2 As shown, the first flow valve, the second flow valve, and the third flow valve are all pneumatic control valves. Specifically, pneumatic control valves have advantages such as simple control, fast response, and intrinsic safety, and when used in flammable and explosive environments, no additional explosion-proof measures are required.

[0052] In another embodiment of the present invention, the heat recovery device 40 includes a condenser (not shown in the drawings) and an energy-saving device (not shown in the drawings). One end of the energy-saving device is connected to the flue gas outlet pipe of the flue gas outlet pipe 14, and the other end is connected to the condenser pipe. Specifically, the water vapor in the exhaust gas can be condensed through the energy-saving device and the condenser, thereby reducing the temperature of the exhaust gas and improving the thermal efficiency of the boiler.

[0053] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A natural gas boiler, characterized in that: The boiler includes a boiler body, a burner, a boiler cleaning device, a heat recovery device, a first flue gas return pipe assembly, a second flue gas return pipe assembly, and a water supply device. The water supply device is connected to the outside of the boiler body and is used to introduce water into the boiler body. The boiler body is equipped with a furnace chamber, and a first sensor, a second sensor, and a third sensor are all located inside the furnace chamber and are used to detect oxygen content, hydrogen content, and natural gas content, respectively. One end of the furnace chamber is connected to the burner, and the other end is provided with an installation port. The first flue gas return pipe assembly is horizontally located beside the furnace chamber and communicates with the furnace chamber. The second flue gas return pipe assembly is located at the bottom of the first flue gas return pipe assembly, and the second flue gas return pipe assembly is connected to the first flue gas return pipe assembly through a flue gas communication hood, which is located beside the burner; the end of the second flue gas return pipe assembly away from the flue gas communication hood is provided with a flue gas outlet pipe, which is connected to the heat recovery device; the heat recovery device is located at the top of the boiler body; the boiler cleaning device is detachably installed on the boiler body through an installation port, and one end of the boiler cleaning device extends into the furnace lining for cleaning the inner wall of the furnace lining; the boiler cleaning device includes a moving block, a drive mechanism, a cleaning mechanism, a lead screw, an installation mechanism, and a rotating block; the installation mechanism is installed on the installation port, and the rotating block is rotatably connected to the installation mechanism and located outside the boiler body; the lead screw is fixedly connected to the rotating block, and one end of the lead screw extends horizontally into the furnace lining; the moving block is located inside the furnace lining and is threadedly connected to the lead screw; the drive mechanism is fixedly installed on the moving block, and the moving end of the drive mechanism is perpendicular to the lead screw and... The cleaning mechanism is located at the moving end of the drive mechanism and is used to clean the interior of the furnace liner. The cleaning mechanism includes a fixed plate, a cleaning brush, and an elastic element. The fixed plate is connected to the moving end of the drive mechanism. One end of the elastic element is connected to the fixed plate, and the other end is fixedly connected to the cleaning brush. The cleaning brush is located on the side of the fixed plate away from the drive mechanism. The cleaning mechanism also includes two spaced-apart slide rods. One end of each slide rod is fixedly connected to the cleaning brush, and the other end passes through the fixed plate and is slidably connected to it. The elastic element consists of multiple springs, each spaced apart on the fixed plate. The mounting mechanism includes a mounting part and two semi-circular fixing rings adapted to the mounting opening. Both semi-circular fixing rings are slidably connected to the mounting part, and the mounting part is rotatably connected to the rotating block. A connecting rod slides between the bottoms of the two semi-circular fixing rings, and the two ends of the connecting rod are provided with limiting parts. A fixing part is provided at the top of each of the two semi-circular fixing rings, and a coaxial locking hole is provided on each fixing part.

2. The natural gas boiler according to claim 1, characterized in that: The mounting part is provided with a sliding hole, and the semi-circular fixing ring is provided with a limiting rod. The limiting rod extends into the sliding hole and can slide within the sliding hole.

3. The natural gas boiler according to any one of claims 1 to 2, characterized in that: The novel natural gas boiler also includes a combustion-supporting control system, which comprises a controller, a hydrogen-oxygen generator, a natural gas storage tank, a first flow valve, a second flow valve, a third flow valve, a first sensor, a second sensor, and a third sensor. The hydrogen-oxygen generator is connected to both an oxygen storage tank and a hydrogen storage tank. The oxygen storage tank is connected to the furnace chamber via a pipeline, and the first flow valve is located on the pipeline connecting the oxygen storage tank and the furnace chamber. The hydrogen storage tank is connected to the furnace chamber via a pipeline, and the second flow valve is located on the pipeline connecting the hydrogen storage tank and the furnace chamber. The natural gas storage tank is connected to the furnace chamber via a pipeline, and the third flow valve is located on the pipeline connecting the natural gas storage tank and the furnace chamber. The first flow valve, the second flow valve, the third flow valve, the first sensor, the second sensor, and the third sensor are all signal-connected to the controller.

4. The natural gas boiler according to claim 3, characterized in that: The first flow valve, the second flow valve, and the third flow valve are all pneumatic regulating valves.

5. The natural gas boiler according to any one of claims 1 to 2, characterized in that: The heat recovery device includes a condenser and an energy-saving device. One end of the energy-saving device is connected to the flue outlet pipe of the flue pipe, and the other end is connected to the condenser pipe.

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